混凝沉淀法处理皂素废水的实验研究

Experimental Study on Saponin Wastewater Treatment with Coagulating Sedimentation Method

使用石灰对皂素废水进行预中和处理,考察了聚合氯化铝(PAC)和聚丙烯酰胺(PAM)对皂素废水的处理效果。分别考察了pH值、PAC用量、PAM用量及PAC联合PAM工艺对皂素废水处理效果,结果表明,石灰中和过程适宜的pH值为8,PAC联合PAM工艺对皂素废水处理效果优于单独使用PAC或者单独使用PAM时的处理效果,在pH值=8,PAC投加量为1030mg·L-1,PAM投加量为8.5mg·L-1时,皂素废水中的COD去除率为64.28%。

In order to adjust the pH of saponin wastewater,we using limestone as a neutralizing agent.The effects of pH,the dosage of PAC,the dosage of polyacrylamide was researched on saponin wastewater treatment.The results indicate that the best pH is 8.The treatment effect on saponin wastewater with PAC combined PAM process is better than PAC or PAM used alone.The highest removal rate of Chemical Oxygen Demand（COD）in saponin wastewater is 64.28%,As the pH is 8,the dosage of PAC is 1030 mg L^-1,the dosage of PAM is 8.5mg·L^-1,with PAC combined PAM process.