Polyaluminum chloride biochemical pool and sludge concentration pool utilization Poly aluminum chloride coagulant is an inorganic polymer plus polyelectrolyte water treatment agent. Coagulant needs to meet the requirements: for coagulant in water treatment should meet the following requirements: Polyaluminum chloride coagulation effect is good, harmless to human health, cheap, easy to use. More types of coagulant, mainly in the following two categories: 1), inorganic salt coagulant is currently the most widely used aluminum salt and iron salt. 2), polymer coagulant polymer coagulant inorganic and organic two. Poly aluminum chloride and polymerized iron oxide is currently developed and used more extensive inorganic polymer coagulant. Organic polymer coagulants are natural and synthetic. China currently use more synthetic polyacrylamide. Polyaluminum chloride plant coagulant process: The so-called coagulation process: refers to the sewage treatment process, the coagulant added to the sewage treatment, sewage and water treatment agents mixed so that the colloidal matter in water condensation and flocculation process, the entire The process is called the coagulation process. Principle of coagulant: coagulation mechanism: after adding water treatment agent into water, produce ionization and hydrolysis process, forming colloidal particles, and make coagulation of other colloidal particles in water to produce adsorption, into large particle flocs, and finally produce Subsidence and other water treatment process known as the flocculation mechanism. 1. Sewage Disposal Alkali chloride If the amount of water to be treated exceeds the disposal capacity of the clarification pond or floats too late to sediment due to other factors, it is flocculated by using various inorganic coagulants such as aluminum salt and iron salt In the sewage treatment system. Just add 0.12ppmPAM aid coagulation, can significantly improve the settlement effect. Moreover, the treated water COD and colorimetric indicators will be significantly improved. Need to pay attention to the use of inorganic coagulant or flocculant to be better compatibility with the goods. 2. Sludge concentration increases the utilization of biochemical pools and sludge thickeners. The sludge concentration can be increased from 3-10g / L to 30-100g / L, and the use of 0.3-2ppm can reduce the proportion of sludge and water in the biochemical tank and sludge thickening tank. Greatly reduce the volume of sludge in the next sludge dewatering process and improve the efficiency of sludge dewatering equipment and personnel. 3. Sludge dewatering must be a variety of different types of PAM products for testing and selection. Polymeric Aluminum Ferric Chloride Application Integration: CPAM is suitable for wastewater treatment with high colloidal colloids content in dyeing, papermaking, food, construction, metallurgy, mineral processing, pulverized coal, oilfield, aquatic product processing and fermentation industries, Sludge, paper sludge and other industrial sludge dewatering.