Polyaluminium chloride is an effective water treatment agent. Under what circumstances can the effect of water purification be achieved? What are the influencing factors in the application? The following are four factors affecting water treatment:
1. Different types of polyaluminium chloride have different dosage and solidification effect. Therefore, in water treatment, appropriate treatment agents should be selected according to different water quality.
2. The alkalinity of water is one of the main factors affecting coagulation. The content of suspended particles has an effect on the flocculation and coagulation stages. Due to the different forms of aluminum salt hydrolysates with different pH values, the coagulation effect is also different.
3. If the impurity content in the water is too low, it is not conducive to agglomeration due to particle collision, that is, when the turbidity in the water is low, the condensation effect is poor. Although coagulant itself has not been sterilized, it plays an important role in removing microorganisms and other harmful substances in water. Since microorganisms adhere to suspended particles and organic matter, as many particles and organic matter are removed by flocculation, up to 60% to 90% of microorganisms are removed.
4. Water temperature also has a great influence on the polymerization of aluminum chloride. When the water temperature decreases, the condensation result decreases accordingly. Because the water temperature has a significant impact on the formation rate and final size of flocs, even increasing the amount of coagulant and producing good reaction conditions can not compensate for the impact of reduced water temperature on coagulation effect. When the water temperature is low, the negatively charged colloidal bonds can be combined and bridged in water with anionic inorganic polymer electrolyte activated silicic acid, which can improve the aggregation effect.
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