Through the research of FeSO4, PAC, FeCl3, Al2(SO4) 3 four chemicals effect on the Polysilicon wastewater in this experiment, to determine the coagulants and coagulant type, dosing quantity and dosing conditions. Experimental results show that the 1200 mg/L concentration, PAC coagulation effect is the best, precipitation rate is the highest. To determine the best conditions for coagulation: dosing quantity for each liter of 36mg, PH = 8, stirring speed for 240 r/min, stirring time of 2 min. Through the experiment of PAM optimization determine cationic 1 # PAM for best PAM type, not only was big volume, and settlement body fastest, precipitation, the largest amount on the most clear liquid dosage, clear and the fewest. Join coagulant PAM, sedimentation is more obvious. Sure dosing optimal concentration of 1 g/L, dosing quantity for each liter of 10 ml, best stirring speed for 120 r/min, join PAM coagulation time after need only 10 s, greatly shorten the reaction time, two hours later the highest precipitation rate can reach 85%.
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机译：通过研究FeSO4，PAC，FeCl3，Al2（SO4）3四种化学物质对多晶硅废水的影响，确定混凝剂和混凝剂的类型，加药量和加药条件。实验结果表明，浓度为1200 mg / L时，PAC的混凝效果最好，沉淀率最高。为了确定最佳的凝结条件：每升剂量为36mg，PH = 8，搅拌速度为240 r / min，搅拌时间为2 min。通过PAM优化实验，确定阳离子1＃PAM为最佳PAM类型，不仅体积大，而且沉降体最快，沉淀量最大，最清液用量最大，清澈最少。加入PAM混凝剂，沉淀更加明显。确保最佳投加浓度为1 g / L，每升投加量为10 ml，最佳搅拌速度为120 r / min，加入PAM的凝结时间仅需10 s，大大缩短了反应时间，两小时后沉淀最高率可以达到85％。
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