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Enhancement of coagulation process with powdered activated carbon in PCB and heavy metal ions removal from drinking water

机译：PCB中粉末活性炭的凝固过程提高饮用水中的粉末活性炭和重金属离子的凝固过程

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摘要

Suitability of powdered activated carbon CWZ-30 for enhancing the coagulation process used for the removal of contaminants from surface water was evaluated. Aluminium sulphate, aluminium chloride and pre-hydrolysed polyaluminium chloride (PAX18 and PAX-XL1905) were used as coagulants, and the following parameters were analysed in water sampled from the Kozowa Gora dam reservoir (Poland): concentrations of heavy metals (Cu, Cd, Ni, Pb) and indicator PCBs (28, 52, 101, 118, 138, 153, 180). The highest reduction in heavy metal concentration was obtained with the use of PAX-XL1905. It amounted, in case of copper, cadmium, nickel and lead, to 64, 39, 18 and 85%, respectively. Enhancement of coagulation with powdered activated carbon CWZ-30 in the amount of 30mgL(-1), increased the efficiency of these metals removal up to 79, 53, 26 and 95%, respectively. The best results for total PCB concentration removal were obtained with the use of PAX18. Application of powdered activated carbon also allowed to obtain better effects of PCB removal from water. Therefore, the coagulation process enhanced with powdered activated carbon had crucial impact on the reduction of analysed heavy metals concentration and indicator PCBs.
机译：评价粉末活性炭CWZ-30用于增强用于从地表水中除去污染物的凝血过程的适用性。硫酸铝，氯化铝和预水解的聚氯化铝（PAX18和PAX-XL1905）用作凝结剂，并在从科兹瓦瓦坝储层（波兰）采样的水中分析以下参数：重金属浓度（CD，CD ，Ni，Pb）和指示器PCB（28,52,101,118,138,153,180）。使用PAX-XL1905获得重金属浓度的最高降低。在铜，镉，镍和铅的情况下，分别为64,39,18和85％。用粉末状活化碳CWZ-30的凝血的增强在30mg1（-1）的量，增加了这些金属去除的效率，分别高达79,53,26和95％。通过使用PAX18获得总PCB浓度去除的最佳结果。粉末状活性炭的施用也使得获得PCB从水中取出的更好效果。因此，用粉末状活性炭增强的凝血方法对分析的重金属浓度和指示剂PCB的减少影响至关重要。

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