{"id":6205,"date":"2020-06-09T19:39:04","date_gmt":"2020-06-09T11:39:04","guid":{"rendered":"http:\/\/dmi65.com\/lam-the-nao-no-works\/"},"modified":"2020-06-09T19:39:08","modified_gmt":"2020-06-09T11:39:08","slug":"lam-the-nao-no-works","status":"publish","type":"page","link":"https:\/\/dmi65.com\/vi\/ky-thuat\/lam-the-nao-no-works\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o n\u00f3 ho\u1ea1t \u0111\u1ed9ng"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text]<\/p>\n

Gi\u1edbi thi\u1ec7u<\/h4>\n

M\u1ee5c \u0111\u00edch c\u1ee7a gi\u1ea5y n\u00e0y l\u00e0 \u0111\u1ec3 cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng x\u00fac t\u00e1c n\u01b0\u1edbc DMI-65 v\u1edbi th\u00f4ng tin ch\u1ea5t l\u01b0\u1ee3ng v\u1ec1 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a v\u1eadt li\u1ec7u, kh\u1ea3 n\u0103ng v\u00e0 gi\u1edbi h\u1ea1n c\u1ee7a n\u00f3 v\u00e0 cho ph\u00e9p h\u1ecd \u00e1p d\u1ee5ng c\u00e1c quy tr\u00ecnh x\u1eed tr\u1ecb v\u1eadt li\u1ec7u trong n\u01b0\u1edbc theo c\u00e1ch th\u00edch h\u1ee3p v\u00e0 v\u1edbi s\u1ef1 t\u1ef1 tin. Gi\u1ea5y tr\u00e1nh s\u1ef1 ph\u1ee9c t\u1ea1p chi ti\u1ebft c\u1ee7a c\u00e1c l\u1edbp \u0111i\u1ec7n h\u00f3a b\u1ec1 m\u1eb7t r\u1eafn v\u00e0 khoa h\u1ecdc keo, quy tr\u00ecnh v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc \u0111\u1ecbnh l\u01b0\u1ee3ng v\u00e0 ph\u1ea3n \u1ee9ng. \u0110\u1ed1i v\u1edbi \u0111\u1ed9c gi\u1ea3 \u0111\u00e3 c\u00f3 ki\u1ebfn th\u1ee9c \u0111\u00e1ng k\u1ec3 trong khu v\u1ef1c n\u00e0y gi\u1ea5y mang l\u1ea1i s\u1ef1 hi\u1ec3u bi\u1ebft nhi\u1ec1u h\u01a1n v\u1ec1 nh\u1eefng g\u00ec DMI-65 l\u00e0 v\u00e0 d\u1ef1 \u0111\u1ecbnh s\u1eed d\u1ee5ng c\u1ee7a n\u00f3. Ng\u01b0\u1eddi m\u1edbi \u0111\u1ebfn khu v\u1ef1c n\u00e0y \u0111\u01b0\u1ee3c cung c\u1ea5p v\u1edbi c\u00e1c c\u0103n c\u1ee9, v\u00e0 c\u00f3 l\u1ebd \u0111\u1ed9ng l\u1ef1c, \u0111\u1ec3 ch\u1ec9 \u0111\u1ea1o c\u1ee7a h\u1ecd trong c\u00e1c nghi\u00ean c\u1ee9u s\u00e2u nh\u01b0 h\u1ecd c\u00f3 th\u1ec3 mu\u1ed1n.<\/p>\n

L\u1ecbch s\u1eed<\/h4>\n

Trong nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a n\u01b0\u1edbc x\u1eed l\u00fd, zeolit x\u1ea3y ra t\u1ef1 nhi\u00ean (nh\u01b0 glauconit greensand) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m m\u1ec1m v\u00e0 lo\u1ea1i b\u1ecf s\u1eaft v\u00e0 mangan t\u1eeb n\u1ed3i h\u01a1i make-up v\u00e0 n\u01b0\u1edbc quy tr\u00ecnh. Khi nhu c\u1ea7u v\u1ec1 n\u01b0\u1edbc ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n t\u0103ng (do m\u1ed9t ph\u1ea7n cho c\u00e1c n\u1ed3i h\u01a1i l\u1edbp \u00e1p su\u1ea5t cao h\u01a1n) c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p x\u1eed tr\u1ecb n\u01b0\u1edbc ph\u1ea7n l\u1edbn di chuy\u1ec3n ra kh\u1ecfi c\u00e1c s\u1ea3n ph\u1ea9m n\u00e0y \u0111\u1ec3 l\u00e0m m\u1ec1m cho c\u00e1c lo\u1ea1i nh\u1ef1a trao \u0111\u1ed5i ion t\u1ed5ng h\u1ee3p m\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n.<\/p>\n

Tuy nhi\u00ean, trong tr\u01b0\u1eddng h\u1ee3p s\u1eaft v\u00e0 mangan lo\u1ea1i b\u1ecf di chuy\u1ec3n n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c nhi\u1ec1u ch\u1eadm h\u01a1n v\u00e0 k\u1ebft qu\u1ea3 l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng glauconit greensand (greensand) ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng l\u1ecdc ti\u1ebfp t\u1ee5c cho \u0111\u1ebfn th\u1eddi gian hi\u1ec7n t\u1ea1i. Greensand \u0111\u01b0\u1ee3c v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t b\u01b0\u1edbc ti\u1ec1n x\u1eed l\u00fd tr\u01b0\u1edbc khi qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i ion k\u1ec3 t\u1eeb khi s\u1eaft trong m\u1ed9t n\u01b0\u1edbc th\u1ee9c \u0103n c\u00f3 th\u1ec3 v\u00e0 kh\u00f4ng h\u00f4i nh\u1ef1a cation. C\u00e1c quy tr\u00ecnh kh\u00e1c bao g\u1ed3m th\u00f4ng kh\u00ed v\u00e0 l\u1ecdc oxy h\u00f3a v\u1edbi c\u00e1c b\u1ed9 l\u1ecdc ph\u01b0\u01a1ng ti\u1ec7n ti\u00eau chu\u1ea9n ho\u1eb7c c\u00e1c lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n v\u00e0\/ho\u1eb7c b\u1ed9 l\u1ecdc \u0111\u1ed9c quy\u1ec1n<\/p>\n

Trong khi \u0111\u00e3 c\u00f3 c\u00e1c s\u1ea3n ph\u1ea9m lo\u1ea1i b\u1ecf s\u1eaft\/mangan kh\u00e1c v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n k\u1ec3 t\u1eeb greensand \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u vi\u1ec7c s\u1eed d\u1ee5ng greensand ti\u1ebfp t\u1ee5c m\u1eb7c d\u00f9 \u0111\u00e3 c\u00f3 m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 m\u00e0 l\u00e0m cho n\u00f3 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng \u00edt h\u01a1n l\u00fd t\u01b0\u1edfng. N\u00f3 y\u00eau c\u1ea7u t\u00e1i t\u1ea1o \u0111\u1ecbnh k\u1ef3 v\u1edbi kali permanganat, kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong v\u00f9ng n\u01b0\u1edbc pH th\u1ea5p h\u01a1n ( < 6,2), c\u00f3 nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p (80o<\/sup>F), v\u00e0 c\u00f3 xu h\u01b0\u1edbng l\u00e0m m\u1ec1m th\u00f4ng qua th\u1eddi gian d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 gi\u1ea3m \u00e1p l\u1ef1c \u1edf m\u1ee9c l\u01b0u l\u01b0\u1ee3ng cao h\u01a1n. Ngo\u00e0i ra, vi\u1ec7c cung c\u1ea5p \u0111\u00f4i khi c\u00f3 th\u1ec3 b\u1ecb h\u1ea1n ch\u1ebf do c\u00e1c m\u1ed1i quan t\u00e2m v\u1ec1 m\u00f4i tr\u01b0\u1eddng v\u1edbi c\u00e1c c\u01a1 s\u1edf ch\u1ebf bi\u1ebfn d\u1ecdc theo b\u1edd bi\u1ec3n ph\u00eda \u0111\u00f4ng c\u1ee7a Hoa K\u1ef3.<\/p>\n

B\u1edfi v\u00ec nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y trong nh\u1eefng n\u0103m 1970 n\u01b0\u1edbc x\u1eed tr\u1ecb c\u00f4ng ty v\u00e0 ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i c\u00f9ng \u0111\u00e3 b\u1eaft \u0111\u1ea7u b\u00e0y t\u1ecf quan t\u00e2m \u0111\u1ebfn “c\u00e1i g\u00ec kh\u00e1c” \u0111\u1ec3 thay th\u1ebf greensand. \u0110\u1ec3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ee7a h\u1ecd, c\u00e1c nh\u00e0 khoa h\u1ecdc v\u00e0 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u1edf Nh\u1eadt b\u1ea3n b\u1eaft \u0111\u1ea7u t\u00ecm c\u00e1ch \u0111\u1ec3 truy\u1ec1n c\u00e1c ch\u1ea5t \u00f4xi h\u00f3a cho c\u00e1c v\u1eadt li\u1ec7u ma tr\u1eadn kh\u00e1c nhau. N\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3m th\u1ea5y r\u1eb1ng m\u1ed9t s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ea1nh m\u1ebd h\u01a1n, c\u00f3 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd t\u1ed1t h\u01a1n v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn v\u00e0\/ho\u1eb7c s\u1eeda \u0111\u1ed5i h\u01a1n b\u1ea5t k\u1ef3 ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng t\u1ef1 nhi\u00ean.<\/p>\n

Nhi\u1ec1u th\u1eadp k\u1ef7 nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 truy\u1ec1n d\u1ecbch Nh\u1eadt b\u1ea3n \u0111\u00e3 d\u1eabn \u0111\u1ebfn s\u1ea3n ph\u1ea9m \u0111\u1ed9c \u0111\u00e1o c\u1ee7a \u00dac, DMI-65 l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n x\u00fac t\u00e1c d\u1ea1ng h\u1ea1t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng qu\u00e1 tr\u00ecnh oxy h\u00f3a\/\u00f4xi ho\u00e1 (Redox) ti\u00ean ti\u1ebfn trong n\u01b0\u1edbc. C\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a m\u1ed9t lo\u1ea1i r\u1ed9ng c\u00e1c s\u1ea3n ph\u1ea9m t\u1ea1o ra h\u00e0nh \u0111\u1ed9ng v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a h\u1ecd t\u1eeb s\u1ef1 t\u01b0\u01a1ng t\u00e1c c\u1ee7a b\u1ec1 m\u1eb7t oxit kim lo\u1ea1i c\u1ee7a h\u1ecd v\u1edbi c\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc v\u00e0 ion trong dung gi\u1ea3i. S\u1ea3n ph\u1ea9m n\u00e0y l\u00e0 c\u00e1ch m\u1ea1ng do c\u00f4ng ngh\u1ec7 truy\u1ec1n \u0111\u1ed9c quy\u1ec1n m\u00e0 th\u00e2m nh\u1eadp v\u00e0o c\u00e1c ch\u1ea5t n\u1ec1n vi m\u00f4 c\u1ee7a v\u1eadt li\u1ec7u ma tr\u1eadn, cho ph\u00e9p m\u1ed9t di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t x\u00fac t\u00e1c l\u1edbn h\u01a1n v\u00e0 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t ch\u1eb7t ch\u1ebd. DMI-65 c\u00f3 m\u1ee9c ph\u1ea1t th\u1ea5p, m\u1ed9t khoan dung \u0111\u1ec3 ph\u1ea1m vi pH r\u1ed9ng h\u01a1n v\u00e0 h\u00f3a h\u1ecdc truy\u1ec1n x\u00fac t\u00e1c tr\u00ean b\u1ec1 m\u1eb7t m\u00e0 s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5 ho\u1eb7c gi\u1ea3m b\u1edbt trong \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. Cu\u1ed1i c\u00f9ng 5 \u2013 10 n\u0103m s\u1eed d\u1ee5ng li\u00ean t\u1ee5c.<\/p>\n

Th\u00f4ng tin n\u1ec1n<\/h4>\n

DMI-65 l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng n\u01b0\u1edbc l\u1ecdc x\u00fac t\u00e1c c\u1ef1c k\u1ef3 m\u1ea1nh m\u1ebd \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 lo\u1ea1i b\u1ecf s\u1eaft v\u00e0 mangan trong dung d\u1ecbch l\u1ecfng (n\u01b0\u1edbc) m\u00e0 kh\u00f4ng c\u1ea7n kali permanganat ho\u1eb7c t\u00e1i t\u1ea1o h\u00f3a ch\u1ea5t. C\u1ea5u tr\u00fac vi m\u00f4 \u0111\u1ed9c \u0111\u00e1o c\u1ee7a DMI-65 lo\u1ea1i b\u1ecf hi\u1ec7u qu\u1ea3 h\u00f2a tan s\u1eaft v\u1edbi m\u1ee9c g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n th\u1ea5p nh\u1ea5t l\u00e0 0,001 ppm v\u00e0 mangan \u0111\u1ebfn 0,001 ppm. DMI-65 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ch\u1ea5t x\u00fac t\u00e1c oxy h\u00f3a v\u1edbi qu\u00e1 tr\u00ecnh oxy h\u00f3a ngay l\u1eadp t\u1ee9c v\u00e0 l\u1ecdc c\u00e1c k\u1ebft t\u1ee7a kh\u00f4ng h\u00f2a tan b\u1eaft ngu\u1ed3n t\u1eeb ph\u1ea3n \u1ee9ng oxy h\u00f3a n\u00e0y. DMI-65 c\u0169ng c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf asen, nh\u00f4m v\u00e0 c\u00e1c kim lo\u1ea1i n\u1eb7ng kh\u00e1c v\u00e0 Hydrogen sulfide trong m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh.<\/p>\n

V\u1eadt li\u1ec7u n\u00e0y l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a c\u00e1c lo\u1ea1i s\u1ea3n ph\u1ea9m c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb c\u00e1c h\u00e0nh \u0111\u1ed9ng v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a h\u1ecd t\u1eeb s\u1ef1 t\u01b0\u01a1ng t\u00e1c c\u1ee7a b\u1ec1 m\u1eb7t oxit kim lo\u1ea1i c\u1ee7a h\u1ecd v\u1edbi c\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc v\u00e0 ion trong dung.<\/p>\n

T\u01b0\u01a1ng t\u00e1c b\u1ec1 m\u1eb7t r\u1eafn v\u1edbi n\u01b0\u1edbc ph\u00e2n bi\u1ec7t gi\u1eefa h\u1ea5p ph\u1ee5 nh\u01b0 c\u00e1c l\u1ef1c Van der Waal y\u1ebfu m\u00e0 t\u1ed5 h\u1ee3p m\u1ed9t ch\u1ea5t k\u1ef5 n\u01b0\u1edbc trong m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n l\u00f5i c\u1ee9ng nh\u1eafc nh\u01b0 than ho\u1ea1t t\u00ednh v\u00e0 h\u1ea5p th\u1ee5 nh\u01b0 Van y\u1ebfu der Waal l\u1ef1c m\u00e0 gi\u1eef m\u1ed9t ph\u00e2n t\u1eed k\u1ef5 n\u01b0\u1edbc trong m\u1ed9t ma tr\u1eadn c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c (nh\u01b0 benzene) trong m\u1ed9t polymer c\u1ee7a T-butyl styren ho\u1eb7c h\u1ea5p th\u1ee5 b\u1eb1ng c\u00e1ch chi\u1ebft l\u1ecfng ch\u1ea5t l\u1ecfng. Nh\u1ef1a trao \u0111\u1ed5i ion s\u1eed d\u1ee5ng c\u00e1c qu\u00e1 tr\u00ecnh h\u1ea5p thu trong khi t\u01b0\u01a1ng t\u00e1c c\u1ee7a DMI-65 v\u1edbi c\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc v\u00e0 ion trong dung d\u1ecbch \u0111\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u th\u00f4ng qua h\u1ea5p ph\u1ee5.<\/p>\n

V\u1eadt li\u1ec7u h\u1ea5p ph\u1ee5 lo\u1ea1i kh\u00f4ng x\u00fac t\u00e1c duy tr\u00ec c\u00e1c ion m\u1ee5c ti\u00eau t\u1eeb n\u01b0\u1edbc cho \u0111\u1ebfn khi m\u1ed9t trong hai trang web c\u00f3 s\u1eb5n \u0111\u1ec3 h\u1ea5p th\u1ee5 \u0111\u1ea1t \u0111\u1ebfn m\u1ed9t m\u1eadt \u0111\u1ed9 t\u1ed1i \u0111a v\u00e0 b\u00e3o h\u00f2a ho\u1eb7c n\u1ed3ng \u0111\u1ed9 c\u1ee7a c\u00e1c ion m\u1ee5c ti\u00eau trong n\u01b0\u1edbc \u0111i\u1ec1u tr\u1ecb \u0111\u1ea1t \u0111\u01b0\u1ee3c n\u1ed3ng \u0111\u1ed9 ch\u1ea5p nh\u1eadn t\u1ed1i \u0111a. T\u1ea1i \u0111i\u1ec3m n\u00e0y, v\u1eadt li\u1ec7u h\u1ea5p ph\u1ee5 ph\u1ea3i \u0111\u01b0\u1ee3c t\u00e1i sinh \u0111\u1ec3 lo\u1ea1i b\u1ecf ho\u1eb7c thay th\u1ebf c\u00e1c ion \u00f4 nhi\u1ec5m, ho\u1eb7c c\u00e1c v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c thay th\u1ebf b\u1eb1ng v\u1eadt li\u1ec7u m\u1edbi \u0111\u01b0\u1ee3c n\u1ea1p trong container \u0111i\u1ec1u tr\u1ecb. Khi qu\u00e1 tr\u00ecnh n\u00e0y ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch trao \u0111\u1ed5i m\u1ed9t lo\u1ea1i ion cho c\u00e1c ion m\u1ee5c ti\u00eau t\u1eeb n\u01b0\u1edbc qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 giao d\u1ecbch ion. Lo\u1ea1i ch\u1ea5t h\u1ea5p ph\u1ee5 n\u00e0y v\u00e0 m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u th\u1ea5m m\u1ed9t ph\u1ea7n lo\u1ea1i b\u1ecf c\u00e1c ion m\u1ee5c ti\u00eau kh\u1ecfi n\u01b0\u1edbc. B\u1ec1 m\u1eb7t l\u1edbn h\u01a1n tr\u00ean m\u1ed7i th\u1ec3 t\u00edch v\u1eadt li\u1ec7u l\u1edbn h\u01a1n l\u01b0\u1ee3ng ion m\u1ee5c ti\u00eau \u00f4 nhi\u1ec5m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i t\u1eeb n\u01b0\u1edbc.<\/p>\n

Ho\u00e0n to\u00e0n v\u1eadt li\u1ec7u x\u00fac t\u00e1c h\u1ea5p th\u1ee5 c\u00e1c ion ph\u1ea3n \u1ee9ng t\u1eeb dung gi\u1ea3i \u0111\u01b0a ch\u00fang v\u00e0o s\u1ef1 g\u1ea7n g\u0169i c\u1ee7a c\u00e1c li\u00ean k\u1ebft h\u00f3a h\u1ecdc. Sau \u0111\u00f3, c\u00e1c s\u1ea3n ph\u1ea9m ph\u1ea3n \u1ee9ng di chuy\u1ec3n ra kh\u1ecfi b\u1ec1 m\u1eb7t c\u1ee7a ch\u1ea5t x\u00fac t\u00e1c. C\u00e1c ch\u1ea5t x\u00fac t\u00e1c n\u00f3i \u0111\u00fang t\u1ea1o thu\u1eadn l\u1ee3i cho ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc; h\u1ecd kh\u00f4ng ng\u1ea7m lo\u1ea1i b\u1ecf b\u1ea5t c\u1ee9 \u0111i\u1ec1u g\u00ec. N\u1ebfu s\u1ea3n ph\u1ea9m ph\u1ea3n \u1ee9ng l\u00e0 m\u1ed9t k\u1ebft t\u1ee7a r\u1eafn, th\u01b0\u1eddng c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i trong gi\u01b0\u1eddng x\u00fac t\u00e1c, do \u0111\u00f3 lo\u1ea1i b\u1ecf b\u1eb1ng c\u00e1ch l\u1ecdc.<\/p>\n

Nhi\u1ec1u v\u1eadt li\u1ec7u ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t ch\u1ebf \u0111\u1ed9 h\u1ed7n h\u1ee3p; v\u1edbi c\u1ea3 trao \u0111\u1ed5i ion v\u00e0 h\u00e0nh \u0111\u1ed9ng x\u00fac t\u00e1c di\u1ec5n ra. \u0110\u1ed1i v\u1edbi nh\u1eefng v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu cho h\u00e0nh \u0111\u1ed9ng x\u00fac t\u00e1c c\u1ee7a h\u1ecd, trao \u0111\u1ed5i ion k\u1ebft qu\u1ea3 l\u00e0 gi\u1ea3i th\u1ec3 c\u1ee7a c\u00e1c l\u1edbp x\u00fac t\u00e1c d\u1eabn \u0111\u1ebfn s\u1ef1 c\u1ea7n ph\u1ea3i t\u00e1i t\u1ea1o \u0111\u1ecbnh k\u1ef3 ho\u1eb7c k\u00edch ho\u1ea1t l\u1ea1i \u0111\u1ec3 s\u1eeda ch\u1eefa ma tr\u1eadn c\u1ee7a c\u00e1c ion \u1edf b\u1ec1 m\u1eb7t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ecd.<\/p>\n

DMI-65 \u2013 x\u00fac t\u00e1c oxy h\u00f3a ti\u00ean ti\u1ebfn truy\u1ec1n th\u00f4ng<\/h4>\n

DMI-65 l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u d\u1ea1ng h\u1ea1t m\u00e0u n\u00e2u s\u1eabm \u0111\u1ebfn \u0111en. M\u00e0u n\u00e0y \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi mangan oxit \u1edf c\u00e1c l\u1edbp b\u00ean ngo\u00e0i c\u1ee7a c\u00e1c h\u1ea1t. DMI-65 l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng x\u00fac t\u00e1c trong \u00fd ngh\u0129a th\u1ef1c s\u1ef1 c\u1ee7a t\u1eeb v\u00e0 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho qu\u00e1 tr\u00ecnh oxy h\u00f3a \u2013 k\u1ebft t\u1ee7a l\u1ecdc v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5 trong c\u00e1c ph\u1ea3n \u1ee9ng. N\u00f3i \u0111\u00fang, ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng t\u1ea1o \u0111i\u1ec1u ki\u1ec7n ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc v\u00e0 kh\u00f4ng r\u00f5 r\u00e0ng lo\u1ea1i b\u1ecf b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec. Sau khi b\u1ecb \u00f4xi h\u00f3a, kh\u00eda c\u1ea1nh l\u1ecdc \u0111\u1ed9 s\u00e2u c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng lo\u1ea1i b\u1ecf c\u00e1c ch\u1ea5t r\u1eafn sau \u0111\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh k\u1ef3 backr\u1eeda ra kh\u1ecfi c\u00e1c m\u1ea1ch l\u1ecdc.<\/p>\n

C\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng kh\u00f4ng c\u1ea7n t\u00e1i t\u1ea1o ho\u1eb7c k\u00edch ho\u1ea1t l\u1ea1i v\u00e0 kh\u00f4ng hi\u1ec3n th\u1ecb m\u1ed9t kh\u1ea3 n\u0103ng m\u1ee5c n\u00e1t \u0111\u1ec3 l\u00e0m c\u00f4ng vi\u1ec7c x\u00fac t\u00e1c c\u1ee7a n\u00f3. Trong th\u1eddi gian t\u1eeb 5 \u0111\u1ebfn 10 n\u0103m, th\u00f4ng qua nhi\u1ec1u ho\u1ea1t \u0111\u1ed9ng r\u1eeda ng\u01b0\u1ee3c c\u1ee7a gi\u01b0\u1eddng \u0111\u1ec3 lo\u1ea1i b\u1ecf ch\u1ea5t r\u1eafn gi\u1eef l\u1ea1i, c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng b\u1ecb suy tho\u00e1i do li\u00ean l\u1ea1c gi\u1eefa c\u00e1c h\u1ea1t v\u00e0 m\u00e0i m\u00f2n c\u01a1 kh\u00ed. Sau \u0111\u00f3, v\u1eadt li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c thay th\u1ebf.<\/p>\n

HO\u1ea0T \u0110\u1ed8NG C\u01a0 B\u1ea2N:<\/strong><\/p>\n

C\u00e1c qu\u00e1 tr\u00ecnh di\u1ec5n ra trong m\u1ed9t gi\u01b0\u1eddng c\u1ee7a DMI-65 li\u00ean quan \u0111\u1ebfn gi\u1ea3m\/oxy h\u00f3a (Redox). Ph\u1ea3n \u1ee9ng redox li\u00ean quan \u0111\u1ebfn vi\u1ec7c chuy\u1ec3n giao c\u00e1c electron gi\u1eefa c\u00e1c lo\u00e0i. Gi\u1ea3m l\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c electron ho\u1eb7c gi\u1ea3m tr\u1ea1ng th\u00e1i \u00f4xi h\u00f3a c\u1ee7a m\u1ed9t ph\u00e2n t\u1eed, nguy\u00ean t\u1eed ho\u1eb7c ion. Qu\u00e1 tr\u00ecnh oxy h\u00f3a l\u00e0 s\u1ef1 m\u1ea5t m\u00e1t c\u1ee7a c\u00e1c electron ho\u1eb7c t\u0103ng tr\u1ea1ng th\u00e1i \u00f4xi h\u00f3a c\u1ee7a m\u1ed9t ph\u00e2n t\u1eed, nguy\u00ean t\u1eed ho\u1eb7c ion. C\u00e1c ph\u1ea3n \u1ee9ng redox x\u1ea3y ra \u0111\u1ed3ng th\u1eddi nh\u1edd \u0111\u00f3 kh\u00f4ng th\u1ec3 c\u00f3 ph\u1ea3n \u1ee9ng gi\u1ea3m oxy. C\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng “gi\u00fap” ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc x\u1ea3y ra b\u1eb1ng vi\u1ec7c t\u01b0\u01a1ng t\u00e1c v\u1edbi ph\u1ea3n \u1ee9ng m\u00e0 kh\u00f4ng b\u1ecb thay \u0111\u1ed5i v\u0129nh vi\u1ec5n. M\u1ed9t trong c\u00e1c cu\u1ed9c th\u1ea3o lu\u1eadn s\u00e2u v\u1ec1 h\u00f3a kh\u1eed oxy l\u00e0 b\u00ean ngo\u00e0i ph\u1ea1m vi c\u1ee7a gi\u1ea5y n\u00e0y, n\u00f3 s\u1ebd ch\u1ec9 \u0111\u1ed1i ph\u00f3 v\u1edbi c\u00e1ch th\u1ee9c c\u00e1c qu\u00e1 tr\u00ecnh Redox \u00e1p d\u1ee5ng trong vi\u1ec7c lo\u1ea1i b\u1ecf s\u1eaft v\u00e0 mangan b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng DMI-65. C\u00e1c ph\u01b0\u01a1ng tr\u00ecnh Redox c\u00e1 nh\u00e2n s\u1ebd \u0111\u01b0\u1ee3c bao g\u1ed3m trong c\u00e1c ph\u1ea7n lo\u1ea1i b\u1ecf s\u1eaft v\u00e0 mangan sau \u0111\u00e2y.<\/p>\n

\u0110\u1ec3 b\u1eaft \u0111\u1ea7u qu\u00e1 tr\u00ecnh oxy h\u00f3a c\u1ee7a c\u00e1c ion trong dung d\u1ecbch v\u00e0 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c l\u1edbp oxy ho\u00e1 kh\u00f4ng b\u1ecb t\u1ed5n h\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a clo ho\u1eb7c \u00f4xi h\u00f3a kh\u00e1c. Trong qu\u00e1 tr\u00ecnh n\u00e0y, oxy h\u00f3a lo\u1ea1i b\u1ecf c\u00e1c electron v\u00e0 \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5 trong qu\u00e1 tr\u00ecnh n\u00e0y. C\u00e1c nh\u00e0 \u0111i\u1ec1u h\u00e0nh c\u1ea7n ph\u1ea3i \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00f3 m\u1ed9t 0,1-0,3 ppm d\u01b0 clo mi\u1ec5n ph\u00ed trong n\u01b0\u1edbc th\u1ea3i.<\/p>\n

Clo, cho \u0103n nh\u01b0 natri hypochlorite (NaOCl) ho\u1eb7c thu\u1ed1c t\u1ea9y (12,5 NaOCl), l\u00e0 ch\u1ea5t \u00f4xi h\u00f3a \u01b0a th\u00edch v\u00ec n\u00f3 l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i r\u1ebb ti\u1ec1n, s\u1eb5n c\u00f3 tr\u00ean to\u00e0n th\u1ebf gi\u1edbi v\u00e0 n\u00f3 c\u00f3 hi\u1ec7u qu\u1ea3. C\u00e1c ch\u1ea5t oxy h\u00f3a kh\u00e1c nh\u01b0 hydrogen peroxide (H2<\/sub>O2<\/sub>), clo oxit (clo2<\/sub>) ho\u1eb7c Ozone c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng mi\u1ec5n l\u00e0 m\u1ed9t d\u01b0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111o v\u00e0 duy tr\u00ec.<\/p>\n

M\u1ed9t ch\u1ee9c n\u0103ng kh\u00e1c c\u1ee7a clo l\u00e0 n\u00f3 gi\u1eef c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng mi\u1ec5n ph\u00ed t\u1eeb s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a vi khu\u1ea9n ho\u1eb7c ch\u1ea5t nh\u1eddn. B\u1ec1 m\u1eb7t x\u00fac t\u00e1c oxit mangan ph\u1ea3i gi\u1eef s\u1ea1ch \u0111\u1ec3 c\u00e1c ion trong n\u01b0\u1edbc c\u00f3 th\u1ec3 li\u00ean l\u1ea1c v\u1edbi n\u00f3. \u0110\u1ed3ng th\u1eddi, clo l\u00e0 m\u1ed9t ngu\u1ed3n oxy ph\u1ea3n \u1ee9ng h\u01a1n so v\u1edbi oxy ph\u00e2n t\u1eed. Bi\u1ec3u \u0111\u1ed3 sau \u0111\u00e2y cho th\u1ea5y m\u1ee9c \u0111\u1ed9 an to\u00e0n cho c\u00e1c th\u00e0nh ph\u1ea7n n\u01b0\u1edbc kh\u00e1c c\u00f3 th\u1ec3 g\u00e2y tr\u1edf ng\u1ea1i cho s\u1ef1 t\u01b0\u01a1ng t\u00e1c b\u1ec1 m\u1eb7t.<\/p>\n

Kh\u00f4ng gi\u1ed1ng nh\u01b0 nh\u1ef1a trao \u0111\u1ed5i ion, n\u01a1i cao h\u01a1n li\u1ec1u l\u01b0\u1ee3ng regenerant s\u1ebd t\u0103ng kh\u1ea3 n\u0103ng trao \u0111\u1ed5i ion, ph\u01b0\u01a1ng clo ho\u1eb7c n\u1ed3ng \u0111\u1ed9 cao h\u01a1n y\u00eau c\u1ea7u \u0111\u1ec3 \u00f4xi h\u00f3a Fe v\u00e0 MN kh\u00f4ng l\u00e0m t\u0103ng c\u00e1c thu\u1ed9c t\u00ednh oxy h\u00f3a c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng. Ngo\u00e0i ra, k\u1ec3 t\u1eeb khi c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 pretreat n\u01b0\u1edbc tr\u01b0\u1edbc khi m\u1ed9t h\u1ec7 th\u1ed1ng th\u1ea9m th\u1ea5u ng\u01b0\u1ee3c (RO) m\u1ed9t d\u01b0 clo mi\u1ec5n ph\u00ed cao h\u01a1n c\u00f3 y\u00eau c\u1ea7u \u0111i\u1ec1u tr\u1ecb b\u00e0i r\u1ed9ng r\u00e3i h\u01a1n \u0111\u1ec3 gi\u1ea3m d\u01b0 \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u00e0ng t\u1eeb c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng clo.<\/p>\n

DMI-65 ph\u1ea3i \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t tr\u01b0\u1edbc khi \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o d\u1ecbch v\u1ee5 l\u1ea7n \u0111\u1ea7u ti\u00ean. K\u00edch ho\u1ea1t n\u00e0y \u0111\u00f2i h\u1ecfi m\u1ed9t li\u1ec1u l\u01b0\u1ee3ng clo cao h\u01a1n so v\u1edbi s\u1eed d\u1ee5ng trong ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng nh\u01b0ng ch\u1ec9 ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ed9t l\u1ea7n trong qu\u00e1 tr\u00ecnh kh\u1edfi \u0111\u1ed9ng ban \u0111\u1ea7u. T\u1ef7 l\u1ec7 li\u1ec1u l\u01b0\u1ee3ng l\u00e0 10 ch\u1ea5t l\u1ecfng ounce 12,5 clo m\u1ed7i foot kh\u1ed1i (ft3<\/sup>) c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng. Vi\u1ec7c k\u00edch ho\u1ea1t ch\u1ec9 \u0111\u00f2i h\u1ecfi ph\u1ea3i ng\u00e2m m\u1ed9t v\u00e0i gi\u1edd nh\u01b0ng m\u1ed9t \u0111\u00eam ng\u00e2m \u0111\u01b0\u1ee3c \u01b0a th\u00edch.<\/p>\n

Sau khi k\u00edch ho\u1ea1t, c\u00e1c t\u00e0u (s) ph\u1ea3i \u0111\u01b0\u1ee3c r\u1eeda s\u1ea1ch \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c NaOCl d\u01b0 th\u1eeba v\u00e0 b\u1ea5t k\u1ef3 ti\u1ec1n ph\u1ea1t. K\u1ec3 t\u1eeb khi mangan oxit l\u00e0 m\u1ed9t trong nh\u1eefng th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng m\u1ed9t m\u1edf r\u1ed9ng r\u1eeda \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u t\u1ea1i b\u1eaft \u0111\u1ea7u l\u00ean \u0111\u1ec3 lo\u1ea1i b\u1ecf b\u1ea5t k\u1ef3 d\u1ea5u v\u1ebft oxit mangan mi\u1ec5n ph\u00ed c\u00f2n l\u1ea1i t\u1eeb qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. M\u1ed9t khi c\u00e1c c\u1ea5p MN trong n\u01b0\u1edbc ph\u00eda \u0111\u1ea1t gi\u00e1 tr\u1ecb c\u1ee7a 0,05 \u0111\u1ebfn 0,15 ppm v\u00e0 c\u00f2n l\u1ea1i clo t\u1ef1 do l\u00e0 thi\u1ebft l\u1eadp c\u00e1c b\u1ed9 l\u1ecdc \u0111\u00e3 s\u1eb5n s\u00e0ng \u0111\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o d\u1ecbch v\u1ee5.<\/p>\n

Ph\u01b0\u01a1ng ti\u1ec7n thay th\u1ebf do c\u00e1c t\u00ednh ch\u1ea5t l\u1ecdc v\u1eadt l\u00fd gi\u1ea3m c\u1ee7a ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng do s\u1ef1 m\u00e0i m\u00f2n v\u1eadt l\u00fd s\u1ebd x\u1ea3y ra tr\u01b0\u1edbc khi s\u1ef1 suy tho\u00e1i ho\u00e0n to\u00e0n c\u1ee7a l\u1edbp x\u00fac t\u00e1c \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n. Trong \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng cu\u1ed9c s\u1ed1ng truy\u1ec1n th\u00f4ng \u0111\u01b0\u1ee3c \u01b0\u1edbc t\u00ednh kho\u1ea3ng 5 \u2013 10 n\u0103m.<\/p>\n

S\u1eaft (Fe) l\u01b0\u1ee3ng m\u01b0a v\u00e0 lo\u1ea1i b\u1ecf b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng DMI 65<\/h4>\n

S\u1eaft (Fe) l\u00e0 nguy\u00ean t\u1ed1 ph\u1ed5 bi\u1ebfn th\u1ee9 t\u01b0 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong l\u1edbp v\u1ecf tr\u00e1i \u0111\u1ea5t v\u00e0 t\u1ed3n t\u1ea1i \u1edf m\u1ed9t lo\u1ea1t c\u00e1c tr\u1ea1ng th\u00e1i \u00f4xi h\u00f3a t\u1eeb-2 \u0111\u1ebfn + 6 m\u1eb7c d\u00f9 c\u00e1c tr\u1ea1ng th\u00e1i ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 s\u1eaft (+ 2) v\u00e0 ferric (+ 3).<\/p>\n

Mu\u1ed1i m\u00e0u l\u00e0 d\u1ec5 d\u00e0ng h\u00f2a tan. Tr\u01b0\u1edbc khi s\u1eaft, m\u1ed9t ch\u1ea5t r\u1eafn h\u00f2a tan th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y nh\u01b0 l\u00e0 bicarbonate s\u1eaft, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf b\u1eb1ng c\u00e1ch l\u1ecdc n\u00f3 ph\u1ea3i b\u1ecb \u00f4xi h\u00f3a, tr\u1edf th\u00e0nh hydroxit ferric v\u00e0 trong v\u00f9ng n\u01b0\u1edbc pH trung t\u00ednh k\u1ebft t\u1ee7a ra trong gi\u01b0\u1eddng ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng. B\u1ec1 m\u1eb7t x\u00fac t\u00e1c c\u1ee7a DMI-65 ch\u1ee9a \u00f4x\u00edt mangan ho\u1eb7c cho th\u1ea5y c\u00e1c \u0111\u1ecba \u0111i\u1ec3m mangan v\u00e0 oxy h\u1ea5p th\u1ee5 c\u00e1c [Fe] ion c\u00f3 trong n\u01b0\u1edbc. Ph\u1ea3n \u1ee9ng c\u1ee7a bicarbonate s\u1eaft v\u00e0 NaOCl l\u00e0 g\u1ea7n nh\u01b0 t\u1ee9c th\u1eddi v\u00e0 c\u00e1c bicarbonate s\u1eaft \u00f4xi h\u00f3a (t\u1eeb b\u1ecf m\u1ed9t OH–<\/sup>) \u0111\u1ec3 tr\u1edf th\u00e0nh hydroxit ferric kh\u00f4ng h\u00f2a tan m\u00e0 sau \u0111\u00f3 \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf th\u00f4ng qua l\u1ecdc trong b\u1ec1 m\u1eb7t x\u00fac t\u00e1c c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng. Ph\u01b0\u01a1ng tr\u00ecnh ph\u1ea3n \u1ee9ng redox sau \u0111\u00e2y gi\u1ea3i th\u00edch qu\u00e1 tr\u00ecnh n\u00e0y.<\/p>\n

\"\"<\/p>\n

2Fe (HCO3<\/sub>)2<\/sub> + Naocl + H2<\/sub>O + 2FE (Oh)2<\/sub> + 2CO2<\/sub> + NaCl<\/p>\n

Trong h\u00ecnh tr\u00ean, b\u1ec1 m\u1eb7t x\u00fac t\u00e1c \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y d\u01b0\u1edbi d\u1ea1ng tr\u01a1n \u0111\u01a1n gi\u1ea3n. Ch\u1eef “M” \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ea1i di\u1ec7n cho m\u1ed9t ion kim lo\u1ea1i chung trong l\u01b0\u1edbi c\u1ee7a b\u1ec1 m\u1eb7t n\u00e0y. Ch\u1eef “O”, \u1edf trung t\u00e2m c\u1ee7a v\u00f2ng tr\u00f2n, \u0111\u1ea1i di\u1ec7n cho m\u1ed9t nguy\u00ean t\u1eed \u00f4xy. K\u00edch th\u01b0\u1edbc ion kh\u00e1c nhau v\u00e0 ph\u00e2n t\u1eed \u00f4xy (m\u00e0u xanh) \u0111\u01b0\u1ee3c \u0111\u1ea1i di\u1ec7n \u1edf quy m\u00f4 t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u00fang. Ngo\u1ea1i tr\u1eeb c\u00e1c ph\u00e2n t\u1eed \u00f4xy, B\u00e0n l\u00e0 ngo\u1ea1i quan \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng v\u00f2ng tr\u00f2n \u1ed1p. Vi\u1ec7c gi\u1ea3i th\u00edch cho c\u00e1c ch\u1eef c\u00e1i v\u00e0 c\u00e1c ion trong con s\u1ed1 “oxy h\u00f3a ion \u1edf b\u1ec1 m\u1eb7t x\u00fac t\u00e1c” l\u00e0:<\/p>\n

M: ion kim lo\u1ea1i chung trong l\u01b0\u1edbi b\u1ec1 m\u1eb7t x\u00fac t\u00e1c (MN +); n = 1, 2…<\/p>\n

O: nguy\u00ean t\u1eed \u00f4xy ho\u1eb7c ion (O-)<\/p>\n

Fe: nguy\u00ean t\u1eed s\u1eaft ho\u1eb7c ion (Fe2 +, Fe3 + +)<\/p>\n

H: nguy\u00ean t\u1eed hi\u0111r\u00f4 ho\u1eb7c ion (H +)<\/p>\n

OH: hydroxit, ho\u1eb7c anion hydroxyl (OH-)<\/p>\n

H2O, ph\u00e2n t\u1eed n\u01b0\u1edbc Hi\u1ec3n th\u1ecb nh\u01b0 v\u00f2ng tr\u00f2n \u1ed1p<\/p>\n

Fe (OH) 2, hydroxit m\u00e0u \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng v\u00f2ng tr\u00f2n \u1ed1p<\/p>\n

Fe (OH) 3, ferric hydroxide, \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng v\u00f2ng \u1ed1p, m\u00e0u n\u00e2u<\/p>\n

O2, ph\u00e2n t\u1eed \u00f4xy, nguy\u00ean t\u1eed \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb \u1edf kho\u1ea3ng c\u00e1ch li\u00ean k\u1ebft c\u1ed9ng h\u00f3a tr\u1ecb, m\u00e0u xanh<\/p>\n

Bicarbonate s\u1eaft h\u00f2a tan \u0111\u01b0\u1ee3c thu h\u00fat b\u1edfi Fe k\u1ebft th\u00fac \u0111\u1ed1i v\u1edbi oxy l\u01b0\u1edbi c\u1ee7a v\u1eadt li\u1ec7u x\u00fac t\u00e1c. \u0110i\u1ec1u n\u00e0y mang l\u1ea1i cho Fe trong s\u1ef1 g\u1ea7n g\u0169i c\u1ee7a c\u1ed9ng h\u00f3a tr\u1ecb li\u00ean k\u1ebft v\u1edbi ion hydroxit c\u1ee7a m\u1ed9t trang web l\u00e2n c\u1eadn v\u00e0 c\u00e1c bicarbonate s\u1eaft thay \u0111\u1ed5i th\u00e0nh hydroxit ferric kh\u00f4ng h\u00f2a tan m\u00e0 k\u1ebft t\u1ee7a trong h\u00ecnh th\u1ee9c tinh th\u1ec3 t\u1eadp h\u1ee3p c\u1ee7a k\u00edch th\u01b0\u1edbc t\u1eeb 3 nanomet v\u00e0 l\u1edbn h\u01a1n. C\u00e1c t\u1eadp h\u1ee3p \u0111\u00f4ng l\u1ea1i trong \u0111\u00e0n l\u1edbn h\u01a1n v\u00e0 \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i trong gi\u01b0\u1eddng x\u00fac t\u00e1c.<\/p>\n

Khi c\u00e1c bicarbonate s\u1eaft \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh hydroxit ferric, n\u1ed3ng \u0111\u1ed9 c\u1ee7a n\u00f3 \u1edf b\u1ec1 m\u1eb7t x\u00fac t\u00e1c gi\u1ea3m. Trong ph\u1ea7n l\u1edbn n\u01b0\u1edbc, tr\u00e1nh xa b\u1ec1 m\u1eb7t x\u00fac t\u00e1c, n\u1ed3ng \u0111\u1ed9 c\u1ee7a bicarbonate m\u00e0u cao d\u1eabn \u0111\u1ebfn vi\u1ec7c khu\u1ebfch t\u00e1n \u0111\u1ed1i v\u1edbi n\u1ed3ng \u0111\u1ed9 th\u1ea5p h\u01a1n theo lu\u1eadt khu\u1ebfch t\u00e1n. Ph\u1ed5 khu\u1ebfch t\u00e1n l\u00e0 tuy\u1ebfn t\u00ednh ph\u1ee5 thu\u1ed9c v\u1edbi s\u1ef1 t\u1eadp trung gradient tr\u00ean kho\u1ea3ng c\u00e1ch.<\/p>\n

\u00d4xy h\u00f2a tan g\u00f3p ph\u1ea7n s\u1ea3n xu\u1ea5t ion hydroxit th\u00f4ng qua qu\u00e1 tr\u00ecnh \u00f4xi h\u00f3a tr\u1ef1c ti\u1ebfp hydro k\u1ebft h\u1ee3p v\u1edbi Fe t\u00e1ch ph\u00e2n t\u1eed n\u01b0\u1edbc v\u00e0 ph\u1ea3n \u1ee9ng v\u1edbi hydro \u1edf b\u1ec1 m\u1eb7t x\u00fac t\u00e1c<\/p>\n

\u0110i\u1ec1u quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd l\u00e0 m\u1eb7c d\u00f9 m\u1ed9t ngu\u1ed3n \u00f4xy l\u00e0 c\u1ea7n thi\u1ebft qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 l\u01b0\u1ee3ng m\u01b0a c\u1ee7a Fe \u0111\u01b0\u1ee3c th\u00fac \u0111\u1ea9y b\u1edfi ion hydroxit. Ngay c\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n t\u01b0\u01a1ng \u0111\u1ed1i ax\u00edt hydroxit ion (m\u1ed9t anion r\u1ea5t m\u1ea1nh) c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng h\u01a1n \u0111\u1ec3 g\u1eafn k\u1ebft v\u1edbi Fe h\u01a1n \u00f4xy. V\u00ec v\u1eady, Fe kh\u00f4ng ph\u1ea3i l\u00e0 r\u1ea5t kh\u00f3 \u0111\u1ec3 oxy h\u00f3a v\u00e0 k\u1ebft t\u1ee7a xung quanh t\u00ecnh tr\u1ea1ng pH trung t\u00ednh. Ngo\u00e0i ra, n\u1ed3ng \u0111\u1ed9 c\u1ee7a c\u00e1c ion hydroxyl t\u0103ng theo c\u1ea5p s\u1ed1 l\u01b0\u1ee3ng pH v\u00e0 do \u0111\u00f3 t\u1ef7 l\u1ec7 oxy h\u00f3a v\u00e0 l\u01b0\u1ee3ng m\u01b0a c\u1ee7a Fe.<\/p>\n

Clo (th\u01b0\u1eddng \u1edf d\u1ea1ng NaOCl) l\u00e0 m\u1ed9t ngu\u1ed3n oxy ph\u1ea3n \u1ee9ng h\u01a1n so v\u1edbi oxy ph\u00e2n t\u1eed. C\u00e1c d\u01b0 l\u00fd t\u01b0\u1edfng \u0111\u1ec3 \u0111\u01b0\u1ee3c duy tr\u00ec h\u1ea1 l\u01b0u c\u1ee7a b\u1ed9 l\u1ecdc x\u00fac t\u00e1c l\u00e0 0,2 mg\/l (0,1 \u0111\u1ebfn 0,3) clo mi\u1ec5n ph\u00ed. L\u01b0\u1ee3ng clo mi\u1ec5n ph\u00ed cao h\u01a1n v\u00e0 do \u0111\u00f3 m\u1ee9c natri hypochlorite cao h\u01a1n trong b\u1ed9 l\u1ecdc x\u00fac t\u00e1c kh\u00f4ng lu\u00f4n gi\u00fap \u0111\u1ee1. N\u00f3 c\u00f3 th\u1ec3 c\u00f3 t\u00e1c d\u1ee5ng b\u1ea5t l\u1ee3i do Venting clo v\u00e0 t\u0103ng c\u00e1c ion natri c\u1ea1nh tranh, Na +. B\u1ec1 m\u1eb7t x\u00fac t\u00e1c ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch \u0111\u1ec3 c\u00e1c ion trong n\u01b0\u1edbc c\u00f3 th\u1ec3 li\u00ean l\u1ea1c v\u1edbi n\u00f3 \u0111\u1ec3 clo ti\u00eam c\u0169ng ng\u0103n ch\u1eb7n s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a vi khu\u1ea9n v\u00e0 blinding c\u1ee7a b\u1ec1 m\u1eb7t x\u00fac t\u00e1c v\u1edbi ch\u1ea5t nh\u1eddn.<\/p>\n

Mangan, MN m\u01b0a v\u00e0 lo\u1ea1i b\u1ecf b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng DMI 65<\/h4>\n

DMI-65 l\u00e0 m\u1ed9t ch\u1ea5t x\u00fac t\u00e1c \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 lo\u1ea1i b\u1ecf mangan. B\u1ec1 m\u1eb7t x\u00fac t\u00e1c c\u00f3 ch\u1ee9a mangan oxit cho brining v\u00e0o g\u1ea7n c\u1ee7a \u0111\u1ed3ng h\u00f3a tr\u1ecb li\u00ean k\u1ebft mangan v\u00e0 c\u00e1c nguy\u00ean t\u1eed \u00f4xy t\u1eeb n\u01b0\u1edbc. Tuy nhi\u00ean, qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 lo\u1ea1i b\u1ecf mangan (MN) l\u00e0 r\u1ea5t kh\u00e1c bi\u1ec7t v\u1edbi Fe. M\u1ed9t s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn l\u00e0 do \u0111\u1ed9 h\u00f2a tan c\u1ee7a mangan oxyhydroxide, MnO (OH)2<\/sub>.<\/p>\n

MN (HCO3<\/sub>)2<\/sub> + Naocl + MnO (Oh)2<\/sub> + NaCl + 2CO2<\/sub><\/p>\n

Mangan kh\u00f4ng k\u1ebft t\u1ee7a nh\u01b0 oxyhydroxit nh\u01b0ng nh\u01b0 \u00f4x\u00edt, MnO2<\/sub> v\u00e0 oxit cao h\u01a1n. S\u1ef1 hi\u1ec7n di\u1ec7n v\u00e0 n\u1ed3ng \u0111\u1ed9 anion hydroxit kh\u00f4ng gi\u00fap \u00edch nhi\u1ec1u trong l\u01b0\u1ee3ng m\u01b0a v\u00e0 lo\u1ea1i b\u1ecf mangan. Mangan hydroxit s\u1ebd b\u1ecb thu h\u00fat b\u1edfi mangan k\u1ebft th\u00fac v\u1edbi \u00f4xy trong b\u1ec1 m\u1eb7t l\u01b0\u1edbi x\u00fac t\u00e1c. M\u1ed9t ph\u00e2n t\u1eed \u00f4xy ph\u1ea3i c\u00f3 s\u1eb5n \u1edf g\u1ea7n \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho qu\u00e1 tr\u00ecnh oxy h\u00f3a th\u00f4ng qua oxy t\u1eeb l\u01b0\u1edbi v\u00e0 trao \u0111\u1ed5i v\u1edbi m\u1ea1ng l\u01b0\u1edbi v\u1edbi oxy ph\u00e2n t\u1eed. \u0110i\u1ec1u ki\u1ec7n n\u00e0y x\u1ea3y ra l\u00e0 c\u00f3 th\u1ec3 c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea \u00edt h\u01a1n v\u00e0 ph\u1ea3n \u1ee9ng l\u00e0 t\u1ed1c \u0111\u1ed9 ch\u1eadm h\u01a1n nhi\u1ec1u so v\u1edbi qu\u00e1 tr\u00ecnh oxy h\u00f3a c\u1ee7a Fe qua hydroxit.<\/p>\n

Trong khi t\u0103ng \u0111\u1ed9 pH \u0111\u1ebfn m\u1ee9c ki\u1ec1m t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho qu\u00e1 tr\u00ecnh oxy h\u00f3a v\u00e0 lo\u1ea1i b\u1ecf mangan, trong nh\u1eefng \u0111i\u1ec1u ki\u1ec7n n\u00e0y, mangan oxy ho\u00e1 c\u0169ng c\u00f3 th\u1ec3 h\u00f2a tan tr\u1edf l\u1ea1i v\u00e0o n\u01b0\u1edbc. Do \u0111\u00f3, b\u1ea5t k\u1ec3 c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m m\u1ee5c ti\u00eau \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf, \u0111i\u1ec1u ki\u1ec7n thi\u1ebfu oxy lu\u00f4n c\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u1edbp x\u00fac t\u00e1c ch\u1ed1ng l\u1ea1i s\u1ef1 l\u1ecdc n\u01b0\u1edbc. Khi oxidising mangan pH \u0111\u01b0\u1ee3c \u0111\u1ec1 ngh\u1ecb l\u00e0 g\u1ea7n 8.<\/p>\n

Mangan oxit c\u00f3 t\u00e1c d\u1ee5ng t\u1ef1 \u0111\u1ed9ng t\u1ed1t. Khi backr\u1eeda n\u00f3 l\u00e0 t\u1ed1t h\u01a1n \u0111\u1ec3 ng\u0103n ch\u1eb7n qu\u00e1 tr\u00ecnh tr\u01b0\u1edbc khi n\u01b0\u1edbc tr\u1edf n\u00ean r\u1ea5t r\u00f5 r\u00e0ng. Mangan oxit d\u01b0 th\u1eeba tr\u00ean gi\u01b0\u1eddng l\u1ecdc s\u1ebd t\u0103ng c\u01b0\u1eddng qu\u00e1 tr\u00ecnh oxy h\u00f3a mangan.<\/p>\n

Key DMI-65 \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng<\/h4>\n

Qu\u00e1 tr\u00ecnh \u0111i\u1ec1u tr\u1ecb ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh theo c\u00e1ch nh\u01b0 v\u1eady \u0111\u1ec3 c\u00e1c b\u1ec1 m\u1eb7t x\u00fac t\u00e1c c\u1ee7a v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c gi\u1eef s\u1ea1ch s\u1ebd v\u00e0 c\u00f3 s\u1eb5n cho ion t\u1eeb n\u01b0\u1edbc \u0111\u1ec3 li\u00ean l\u1ea1c.<\/p>\n

N\u01b0\u1edbc v\u1edbi m\u1ed9t l\u01b0\u1ee3ng l\u1edbn ch\u1ea5t r\u1eafn l\u01a1 l\u1eedng \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m r\u00f5 tr\u01b0\u1edbc khi \u0111i qua b\u1ed9 l\u1ecdc x\u00fac t\u00e1c v\u1edbi DMI-65. M\u1ee9c \u0111\u1ed9 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c c\u1ee7a ch\u1ea5t r\u1eafn l\u01a1 l\u1eedng ph\u1ee5 thu\u1ed9c v\u00e0o thi\u00ean nhi\u00ean c\u1ee7a h\u1ecd. M\u1ed9t l\u01b0\u1ee3ng l\u1edbn ch\u1ea5t r\u1eafn l\u01a1 l\u1eedng kho\u00e1ng s\u1ea3n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd.<\/p>\n

Vi khu\u1ea9n c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n v\u00e0 n\u1ea1p ch\u1ea5t nh\u1eddn tr\u00ean DMI-65. V\u00ec v\u1eady, c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u1eed tr\u00f9ng v\u00e0 oxy h\u00f3a ph\u1ea3i \u0111\u01b0\u1ee3c duy tr\u00ec.<\/p>\n

N\u01b0\u1edbc c\u00f3 ch\u1ee9a \u0111\u1ea5t s\u00e9t v\u00e0 c\u00e1c ph\u00e2n t\u1eed h\u1eefu c\u01a1 l\u1edbn c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 l\u1eafng \u0111\u1ecdng c\u1ee7a v\u1eadt li\u1ec7u nh\u01b0 v\u1eady tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a DMI 65 v\u00e0 blinding c\u1ee7a b\u1ec1 m\u1eb7t x\u00fac t\u00e1c. \u0110i\u1ec1u tr\u1ecb \u0111\u1ec3 lo\u1ea1i b\u1ecf ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m nh\u01b0 v\u1eady tr\u01b0\u1edbc khi b\u1ed9 l\u1ecdc x\u00fac t\u00e1c l\u00e0 c\u1ea7n thi\u1ebft.<\/p>\n

Polymer flocculent c\u0169ng c\u00f3 th\u1ec3 d\u00ednh v\u00e0o DMI-65 v\u00e0 m\u00f9 b\u1ec1 m\u1eb7t x\u00fac t\u00e1c.<\/p>\n

C\u1ee9ng, n\u01b0\u1edbc ng\u1ea7m kh\u00f4ng \u1ed5n \u0111\u1ecbnh c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 l\u1eafng \u0111\u1ecdng quy m\u00f4 trong c\u00e1c b\u1ed9 l\u1ecdc x\u00fac t\u00e1c v\u00e0 m\u00f9 v\u1eadt li\u1ec7u trong m\u1ed9t kh\u1ed1i mono r\u1eafn. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, v\u1eadt li\u1ec7u DMI-65 tr\u00ean gi\u01b0\u1eddng b\u1ecb m\u1ea5t v\u00e0 s\u1ebd ph\u1ea3i \u0111\u01b0\u1ee3c thay th\u1ebf. \u0110i\u1ec1u tr\u1ecb \u1ed5n \u0111\u1ecbnh n\u01b0\u1edbc \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 h\u00ecnh th\u00e0nh quy m\u00f4 trong b\u1ed9 l\u1ecdc x\u00fac t\u00e1c ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/p>\n

C\u1ea3 hai \u0111i\u1ec1u ki\u1ec7n pH c\u00f3 t\u00ednh axit th\u1ea5p v\u00e0 thi\u1ebfu oxy c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 tan r\u00e3 c\u1ee7a mangan t\u1eeb l\u1edbp x\u00fac t\u00e1c c\u1ee7a DMI-65 v\u00e0 m\u1ea5t kh\u1ea3 n\u0103ng c\u1ee7a n\u00f3. PH qu\u00e1 cao c\u00f3 ngh\u0129a l\u00e0 n\u1ed3ng \u0111\u1ed9 qu\u00e1 m\u1ee9c c\u1ee7a c\u00e1c ion hydroxyl (\u0103n m\u00f2n v\u1edbi kim lo\u1ea1i) v\u00e0 c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 tan r\u00e3 c\u1ee7a mangan t\u1eeb l\u1edbp x\u00fac t\u00e1c.<\/p>\n

Kh\u00f4ng s\u1eed d\u1ee5ng n\u01b0\u1edbc kh\u1eed kho\u00e1ng, n\u01b0\u1edbc c\u1ea5t ho\u1eb7c n\u01b0\u1edbc \u0111\u01b0\u1ee3c bi\u1ebft l\u00e0 \u0103n m\u00f2n m\u1ea1nh cho kim lo\u1ea1i \u0111\u1ec3 ng\u00e2m v\u00e0 k\u00edch ho\u1ea1t ban \u0111\u1ea7u c\u1ee7a DMI-65.[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

[vc_row][vc_column][vc_column_text] Gi\u1edbi thi\u1ec7u M\u1ee5c \u0111\u00edch c\u1ee7a gi\u1ea5y n\u00e0y l\u00e0 \u0111\u1ec3 cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng x\u00fac t\u00e1c n\u01b0\u1edbc DMI-65 v\u1edbi th\u00f4ng tin ch\u1ea5t l\u01b0\u1ee3ng v\u1ec1 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a v\u1eadt li\u1ec7u, kh\u1ea3 n\u0103ng v\u00e0 gi\u1edbi h\u1ea1n c\u1ee7a n\u00f3 v\u00e0 cho ph\u00e9p h\u1ecd \u00e1p d\u1ee5ng c\u00e1c quy tr\u00ecnh x\u1eed tr\u1ecb v\u1eadt li\u1ec7u…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":7172,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","footnotes":""},"class_list":["post-6205","page","type-page","status-publish","hentry","description-off"],"yoast_head":"\nL\u00e0m th\u1ebf n\u00e0o n\u00f3 ho\u1ea1t \u0111\u1ed9ng - DMI-65\u00ae<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dmi65.com\/vi\/ky-thuat\/lam-the-nao-no-works\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u00e0m th\u1ebf n\u00e0o n\u00f3 ho\u1ea1t \u0111\u1ed9ng - 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