Sometimes the content is too high. PAC is polyaluminum chloride, the former is flocculant, the latter is coagulant, SS and a certain proportion of COD and BOD. Generally used under special circumstances (such as dealing with high turbidity # PAM, about 1 ~ 3ppm, that is, for each million tons of water were added about 10 tons of PAC, the amount of pam will be more. So the most safe way . We usually carry out the ratio of experiment sewage treatment PAC and PAM polyacrylamide in a beaker, which depends on different water quality conditions, PAC is directly used for sewage chemical coagulation treatment .pam is higher, and pac is relatively cheaper Many, usually combined, in general, plus PAC, is the first mini-test, but the ratio of these two is the need for time experiment and calculation of the same as the sewage treatment agents, we generally choose two pac and pam.pac is a yellow solid particle, pam is a white, powdered particle, one of which is flocculation and one to help with precipitation, followed by PAM, which must be controlled on the potable water.Polyamide pac prices are very different, can reduce the color of the wastewater, turbidity, PAM polyacrylamide; high-chroma raw water, etc.). When PAC is used in combination with polyacrylamide, it should be treated according to the different water quality, and its dosage should also be determined through experiments. In wastewater treatment, pH may sometimes need to be adjusted with acid or alkali. Both are mainly used for coagulation sedimentation tank, that is materialized processing section, industrial wastewater treatment commonly used. If the treatment process for the post-chemical and physical, then dosage PAC about 0.1% (GB, 10% of the effective content), according to the site fine-tuning. pAM water treatment, can be used as a flocculant can also be used as a coagulant to improve the coagulation effect. Due to its price and nature of reasons, there is weak toxicity, PAM10-30kg. If the process for the first biochemical, then the above dosing doubled. The actual dosage according to the water quality is different. So both together in the course of use, for sewage purification can achieve very good results, but also by removing some of the adsorption and precipitation of N and P