Polyaluminum chloride is a new water purifier in the market in recent years, with a large amount of water purifying agent. Industrial grade polyaluminum chloride is mostly yellow and tan particles, and the content is below 28%. The preparation process is mostly drum drying, but sometimes the 26% content is also prepared by some manufacturers using spray drying process to cope with some special Treatment of water quality.
Polyaluminum chloride for drinking water, also known as polyaluminum chloride for water companies, is light yellow or yellow-white powder. All indicators have reached GB15892-2009 purification treatment of drinking water. The fundamental difference between polyaluminum chloride used by water companies and traditional inorganic coagulants is that traditional inorganic coagulants are low-molecular-weight crystalline salts, while the structure of polyaluminum chloride is composed of polycarboxylate complexes with variable shapes, and the speed of flocculation and precipitation is high. Fast, suitable for a wide range of PH values, non-corrosive to pipeline equipment, obvious water purification effect, and can effectively remove color SS, COD, BOD and heavy metal ions such as arsenic and mercury in water, so this product is unanimously recommended by water companies!
Filter using a plate and frame filter press. After being filtered by various material filter plates, the content of water intolerant is greatly reduced, and the 10% aqueous solution is light yellow transparent liquid. It can ensure the smooth flow of the user's pipeline and improve the utilization rate of drugs, which cannot be achieved by the natural sedimentation method. In addition to less water-insoluble matter, the content of heavy metals and other harmful substances is also very small, and the use effect can be comparable to that of spray polyaluminum chloride!
The printing and dyeing industry is an industry with a large proportion of sewage treatment. Printing and dyeing wastewater is the wastewater discharged from printing and dyeing factories mainly processing cotton, hemp, chemical fibers and their blended products. .
Due to the large amount of impurities, large chroma and high organic content in the printing and dyeing sewage, it is necessary to use polyaluminum chloride, polyacrylamide and activated carbon to cooperate.
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