{"id":9258,"date":"2020-06-30T18:59:21","date_gmt":"2020-06-30T10:59:21","guid":{"rendered":"https:\/\/dmi65.com\/nganh-cong-nghiep\/xu-tri-nuoc-cho-power-generation\/"},"modified":"2020-06-30T18:59:34","modified_gmt":"2020-06-30T10:59:34","slug":"xu-tri-nuoc-cho-power-generation","status":"publish","type":"page","link":"https:\/\/dmi65.com\/vi\/nganh-cong-nghiep\/xu-tri-nuoc-cho-power-generation\/","title":{"rendered":"X\u1eed tr\u1ecb n\u01b0\u1edbc cho Power Generation"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text css=”.vc_custom_1593503585420{margin-top: 15px !important;margin-bottom: 15px !important;}”]X\u1eed tr\u1ecb n\u01b0\u1edbc cho Power Generation:<\/strong> Trong th\u00e1ng Gi\u00eang c\u1ee7a 2016 Quantum l\u1ecdc Medium ti\u1ebfn h\u00e0nh m\u1ed9t lo\u1ea1t c\u00e1c chuy\u1ebfn th\u0103m trang web \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 c\u00e1c t\u00f9y ch\u1ecdn \u0111\u1ec3 n\u00e2ng c\u1ea5p nh\u00e0 m\u00e1y x\u1eed l\u00ed n\u01b0\u1edbc cho nh\u00e0 m\u00e1y \u0111i\u1ec7n Kuala Langat (KLPP)<\/a>. M\u1ee5c ti\u00eau l\u00e0 \u0111\u1ec3 l\u00e0m n\u1ed5i b\u1eadt c\u00e1c t\u00f9y ch\u1ecdn chi ph\u00ed th\u1ea5p v\u1edbi m\u1ed9t t\u00e1c \u0111\u1ed9ng th\u1ea5p tr\u00ean Serviceability th\u1ef1c v\u1eadt \u0111\u1ec3 t\u0103ng hi\u1ec7u su\u1ea5t th\u1ef1c v\u1eadt, hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 tin c\u1eady, v\u00e0 kh\u1ea3 n\u0103ng \u0111\u1ec3 \u0111\u1ed1i ph\u00f3 t\u1ed1t h\u01a1n v\u1edbi nh\u1eefng thay \u0111\u1ed5i t\u1ea3i theo m\u00f9a c\u00f3 kinh nghi\u1ec7m trong vi\u1ec7c cung c\u1ea5p n\u01b0\u1edbc th\u00f4.<\/p>\n

C\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a KLPP \u0111\u00e3 b\u1eaft \u0111\u1ea7u k\u1ec3 t\u1eeb khi 1996 s\u1eed d\u1ee5ng tuabin kh\u00ed chu k\u1ef3 k\u1ebft h\u1ee3p v\u00e0 nh\u00e0 m\u00e1y hi\u1ec7n \u0111ang \u0111\u00f3ng g\u00f3p 675MW n\u0103ng l\u1ef1c th\u1ebf h\u1ec7 \u0111i\u1ec7n l\u01b0\u1edbi. Kh\u1ea3 n\u0103ng c\u1ee7a nh\u00e0 m\u00e1y \u0111\u1ec3 cung c\u1ea5p \u0111i\u1ec7n cho m\u1ea1ng l\u01b0\u1edbi theo ngh\u0129a v\u1ee5 c\u1ee7a m\u00ecnh theo Hi\u1ec7p \u0111\u1ecbnh mua \u0111i\u1ec7n ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 bao g\u1ed3m c\u1ea3 ngu\u1ed3n cung c\u1ea5p n\u01b0\u1edbc s\u1ea1ch \u0111\u00e1ng tin c\u1eady cho m\u1ee5c \u0111\u00edch l\u00e0m m\u00e1t. Trung b\u00ecnh, KLPP r\u00fat 20.000 m\u00e9t kh\u1ed1i n\u01b0\u1edbc \u0111\u01b0\u1ee3c x\u1eed l\u00fd cho ho\u1ea1t \u0111\u1ed9ng h\u00e0ng ng\u00e0y c\u1ee7a n\u00f3. \u0110\u1ed1i v\u1edbi ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u01b0u v\u00e0 cu\u1ed9c s\u1ed1ng c\u1ee7a nh\u00e0 m\u00e1y, n\u01b0\u1edbc c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch c\u00e0ng t\u1ed1t v\u1edbi n\u1ed9i dung th\u1ea5p c\u1ee7a ch\u1ea5t h\u1eefu c\u01a1 ho\u1eb7c v\u00f4 t\u00ednh s\u1ebd t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng c\u1ee7a nh\u00e0 m\u00e1y.<\/p>\n

C\u00f3 b\u1ed1n khu v\u1ef1c ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a nh\u00e0 m\u00e1y, n\u01a1i ti\u1ec1m n\u0103ng cho nh\u1eefng c\u1ea3i ti\u1ebfn \u0111\u00e1ng k\u1ec3 \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh.
\n\u2022 Kh\u1ea3 n\u0103ng th\u00eam n\u01b0\u1edbc bore v\u00e0o ngu\u1ed3n cung c\u1ea5p n\u01b0\u1edbc th\u00f4
\n\u2022 L\u00e0m r\u00f5 n\u01b0\u1edbc th\u00f4 tr\u01b0\u1edbc khi v\u00e0o nh\u00e0 m\u00e1y
\n\u2022 T\u1ed1i \u01b0u h\u00f3a c\u1ee7a ch\u01b0\u01a1ng tr\u00ecnh d\u00f9ng thu\u1ed1c flocculent\/polymer (Inc. lo\u1ea1i v\u00e0 li\u1ec1u l\u01b0\u1ee3ng t\u1ef7 l\u1ec7)
\n\u2022 Thay \u0111\u1ed5i c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng trong c\u00e1c b\u1ed9 l\u1ecdc c\u00e1t nhanh ch\u00f3ng \u0111\u1ec3 DMI65\u00ae[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=”.vc_custom_1593503610377{margin-bottom: 0px !important;}”]BORE WATER ADDITION<\/strong><\/p>\n

It was suggested that the area surrounding the plant be assessed for suitability and potential quality and quantity of several bores to add to the plant raw water supply. The addition of bores would not only provide greater flexibility in terms of seasonal blending with river water to ensure sufficient quantities of water in the dry season, could also be used to lower suspended solids and turbidity loadings on the plant during the wet season.<\/p>\n

There is a likelihood that there will be traces of iron and manganese in the bore water, but the use of DMI65 filtration media will remove this and provide an improvement to the usual mechanical filtration duties.<\/p>\n

CLARIFICATION<\/strong><\/p>\n

The high turbidity and suspended solids levels in the raw water could be greatly reduced by clarification prior to entering the water treatment plant. The existing plant is fixed in size and capacity, however a pre-clarification stage will dramatically reduce the load on the current plant.<\/p>\n

A traditional clarifier and upstream floc\/polymer dosing system to handle 1ML\/hr would cost well over USD $1M and take up a considerable land area to install and was therefore not practical in this case. With a very low retention time this type of system would also require very high chemical usage.<\/p>\n

POLYMER OPTIMISATION<\/strong><\/p>\n

A range of polymer samples were supplied during the site visit. Jar testing has been carried out using the range of samples and highlighted a particular polymer most suited to this raw water. A local polymer supply company is able to supply a very similar product in powdered form and at a very reasonable price that would suit the mixing\/batching system mentioned above.<\/p>\n

MEDIA CHANGE-OUT IN RAPID SAND FILTERS<\/strong><\/p>\n

During our visit one of the rapid sand filters was drained for inspection. The sand in the filters has never been changed and is now very hard-packed and is in need of replacement. The filter was filled whilst we were watching and the infiltration rate of the incoming water was very poor with most of the water just flowing across over the top of the sand and down through cracks in the hard packed sand rather than down through it. We proposed to replace the media with DMI65\u00ae filtration media<\/a>.<\/p>\n

The DMI65 will remove the existing and cope with any rise in iron or manganese levels that can be encountered in raw water sources with varying quality. The DMI65 requires a low level of free chlorine (0.2-0.3mg\/L) to activate the media. This is easily achieved as it only requires moving of the existing chlorine dosing point to just prior to the media filters. The chlorine residual will remain and still act as disinfection for the treated water lagoon.<\/p>\n

The DMI65\u00ae also provides the perfect filtration coefficient resulting in excellent mechanical filtration lowering suspended solids and turbidity levels.<\/p>\n

The addition of the DMI media and replacement of the filtration nozzles improved not only the quality of water from the media filters, but also the quantity of water through the filters.<\/p>\n

Sample Results<\/p>\n

\"\"<\/p>\n

With a peak NTU of 1000 and an average inlet TSS of 286 you can see that the outlet of lagoon B has been maintained generally around 80 NTU with an average of 86 NTU.<\/p>\n

OVERALL PLANT OUTPUT<\/strong><\/p>\n

The results from the plant post media filters after the replacement of the old sand media with the new DMI65 media have been consistently excellent.<\/p>\n

The expected results from the media filters after the upgrade were:<\/p>\n