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Application of Polyaluminum Chloride in Chemical Plant Wastewater

Polyaluminum chloride has the functions of sterilization, deodorization, degreasing, turbidity removal, heavy metal salt removal, radioactive pollutants removal, color removal, fluoride removal, aluminum removal, chromium removal, phenol removal, etc. Therefore, polyaluminum chloride is widely used in purification of various sewage. For polyaluminum chloride, the higher the salt content, the better the flocculation effect of the product. In low salinity products, aluminum chips, sodium aluminate, calcium carbonate, aluminum carbonate, gel sodium hydroxide, lime, etc. can be added to increase salinity. If it is considered that heavy metals and other impurities will not be introduced. The methods of adding aluminum chips and sodium aluminate are commonly used. But the cost is higher than calcium aluminate and aluminum ash. At present, most domestic enterprises use calcium aluminate to adjust the basicity.

Characteristics of chemical plant wastewater:

The wastewater generated during the production of chemical products is characterized by large discharge, high toxicity, high concentration of organic matter, high salt content, high chroma, high content of refractory substances and difficult treatment. But at the same time, wastewater also contains a large number of available resources. As a high-tech, membrane technology is of great significance in the production and processing of chemical industry, energy conservation and clean production.

Transparent chrome dye wastewater:

The main characteristics of transparent chromium wastewater are high COD (up to tens of thousands), many particles and deep color. Ordinary chemical waste water has a high chromaticity. The pH value is mostly strong acid or strong alkaline, so it is very difficult to treat it. The treatment of chemical wastewater has become a difficult problem. Therefore, it is of great practical significance to explore new technologies for low-cost treatment of chemical wastewater, which will help to get rid of the predicament faced by chemical enterprises, protect the water environment and promote the healthy development of the chemical industry.

Advantages of PAC:

Polyaluminum chloride can obviously improve the decolorization effect of dyes, and it is generally better than inorganic flocculants. The addition of PAC polyaluminum chloride can make dye molecules form fine flocs under the action of compression double electric layer or neutralization, while the addition of PAM can make anionic organic polymers form coarse flocs mainly depending on the bridging action of their long molecular chains under the action of destabilizing agent. At the same time, side chains of anionic polyacrylamide molecules contain a large number of amide groups, which can form ion bonds with - SON in dye molecules, thus reducing the solubility of organic flocculants in water and promoting the formation and precipitation of flocs.

Thank you for your attentionHenan aierfuke Chemical Co., Ltd：Focus on water treatment, only for the healthy world! Our company is committed toPolyaluminium chloride、Polyferric sulfateThe R & D, manufacturing and sales of series of water purification materials are willing to create success with our customers and friends.