Polyaluminum water treatment flocculation mechanism with the water which components? Polyaluminum chloride flocculation mechanism and PH value of the solution has a strong correlation, and therefore the degree of alkalinity of water is one of the main factors affecting flocculation. Suspended particle content of flocculation, cohesion stage have an impact. The use of adsorption or neutralization to complete the coagulation, the dosage of water purification agent is proportional to the suspended particle content. However, when the dosage is too large, the colloidal system will change the number of signs appear stable. The amount of dosing agent required for the sediment trapping should be inversely proportional to the concentration of the suspended particles, and no further stabilization should occur. According to the basicity of water and the content of suspended particles, can be roughly divided into the following four types of treatment. First, the high content of suspended solids and low alkalinity When the water content of suspended solids and low alkalinity, adding flocculant, the system PH <7, when the hydrolyzate mainly with a positive charge, adsorption and electricity can be neutralized to Complete flocculation. Second, the suspended solids and alkalinity when the alkalinity is high so that the PH value is still 7.5 or above after the addition of pharmaceutical agents, the chemical hydrolyzate is mainly negatively charged, can not be adsorbed and neutralized to achieve aggregation, this time in general To sedimentation network capture method, the need to dosing enough drugs or use of polyaluminum chloride can also get better results. Third, low suspended solids content and high degree of alkalinity When the content of suspended solids in water is low and the degree of alkalinity is high, the hydrolyzate of the agent is mainly negatively charged, so the use of sedimentation network catching method to achieve flocculation. Due to flocculant dosage and suspended solids concentration is inversely proportional to, and therefore often need to add coagulant (such as activated silicate, clay particles, etc.) to increase the concentration of colloidal particles of raw water, a corresponding reduction in coagulation set Add amount. Fourth, suspended solids content and alkalinity are low Suspended solids in water content and alkalinity are low is the most difficult situation, this time, the flocculant (agent) can form a positive charge of the hydrolyzate, but due to suspended particle concentration Too low the chances of agglomeration are extremely small and it is difficult to achieve effective agglomeration. Increasing the turbidity due to increased alkalinity or suspended matter concentration will result in conversion to other types of water for disposal. The above information from the filter source water purification from http://www.gyzhenyu.com finishing release, if reprinted, please indicate the future!