Copper & Zinc Removal from Water using DMI-65 water filtration media for the Environmental & Agricultural Testing Services.
Background
Quantum Filtration Medium Pty Ltd investigated the removal of copper and zinc from water using DMI65 Media in a filtration unit. The investigation examined the removal of the copper and zinc from test batches of water at two different pH.
Method
Quantum Filtration Medium Pty Ltd provided a small test filtration unit containing DMI65 filtration media, which was used to treat a quantity of water, containing known concentrations of copper and zinc at two different pH (the test water). Four separate twenty litres (20 L) batches of test water were prepared:
1. Copper at 20 mg/L concentration at pH 6.0
2. Copper at 20 mg/L concentration at pH 7.5
3. Zinc at 20 mg/L concentration at pH 6.0
4. Zinc at 20 mg/L concentration at pH 7.5
The test water was poured into the top of the filtration unit and allowed to filter through the media, before collection into a bucket at the bottom of the unit (Figure 1). The test water for each batch was analyzed before and after it had passed through the filter, to determine the copper and zinc concentration.
Results – Copper
Three samples of the test water were collected. One sample was collected prior to filtration and two samples collected after passing through the filtration unit at each pH. The first sample was collected when approximately 10L of water had passed through the unit (labelled post filter middle) and the second sample when 20L of water had passed though the filtration unit (labelled post filter end). The results of the copper analysis are shown in Table 1 and Figure 2. A comparison of the copper test water at pH 7.5 pre-filtration and post filtration is provided in Figure 3.
Results – Zinc
Three samples of the test water were collected. One sample was collected prior to filtration and two samples collected after passing through the filtration unit at each pH. The first sample was collected when approximately 10L of water had passed through the unit (labelled post filter middle) and the second sample when 20L of water had passed though the filtration unit (labelled post filter end). The results of the zinc analysis are shown in Table 2 and Figure 4.
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