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Understand the process of polyaluminum chloride to improve water quality

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2017-12-19 09:22:33

Understand the process of polyaluminum chloride to improve water quality Water purification materials to improve water quality is the consensus of all, after a large number of applications proved that the use of polyaluminum chloride instead of the traditional iron, aluminum salt coagulant, can significantly improve the water purification efficiency , Reduce processing costs, improve water quality. Improve the coagulation performance of polyaluminum chloride; the effect of decontamination of high turbidity water and low temperature low turbidity water is particularly obvious, improving water quality is undoubtedly an imminent event, many experts reached a consensus on this. How to improve water quality, the experts believe that more effective control of pollution, improve water is the fundamental way. Polyaluminum chloride not only has a strong coagulation and turbidity removal effect, but also has significant bleaching and humus removal. In the same treatment conditions to achieve the best flocculation, the required dosage of aluminum polyalkylene to reduce the traditional 2/3 as much. Under the same dosage conditions, the use of polyaluminum chloride to obtain lower residual turbidity than the traditional aluminum salts, so the same treatment results can be obtained at lower doses. In addition, polyaluminium chloride is used in a wider pH range than conventional aluminum salts. Generally, when the low temperature water (& lt; 5 ℃), coagulant turbidity efficiency of traditional coagulants is obviously decreased and lead to deterioration of effluent quality. However, the use of polyaluminum, whether low or normal temperature water, can obtain better coagulation Turbidity effect. In addition, the polymerization of aluminum can significantly improve the solid-liquid separation efficiency, sedimentation and filtration to improve sludge dewatering performance, thereby reducing the residence time of the settling tank and increase water production. In addition, filtration and sludge dewatering are facilitated due to the large and compact flocs produced.