优选混凝剂及助凝剂处理低温低浊水的方法

文章研究了低温低浊水混凝剂及助凝剂的优化选择,考察了浊度、COD M n、氨氮等水质特征,分析了低温低浊水的处理效果。结果表明,混凝剂和助凝剂投加量增大,上清液中浊度、COD去除率不断提高。在PAFC用量为12 mg/L,活化硅酸用量为0.12 mg/L条件下,浊度、COD去除率分别达到最大值98.3%和87%,剩余浊度和剩余COD M n分别为0.21 NTU、0.64 mg/L。而PAC＋PAM表现出更好的除氨氮效果,剩余氨氮为0.07 mg/L。

Optimization of Coagulants and Coagulant Aids in the Treatment of Water with Low Temperature and Low Turbidity

In this paper the treatment of the water with lowtemperature and lowturbidity by selected coagulants and coagulant aids was studied,along with such water qualities as turbidity,COD M n,ammonia nitrogen investigated and the lowtemperature and lowwater treatment effect analyzed. The results showthat as the dosage of coagulants and coagulant aids increases,supernatant turbidity,COD M n removal rate increase. In the amount of PAFC 12 mg / L and activated silicic acid 0. 12 mg / L,the removal rate of turbidity,COD M n reaches a maximum of 98. 3% and 87%. Residual turbidity and residual COD were 0. 21 NTU,0. 64 mg / L. The PAC＋ PAM showed a better effect in addition to ammonia. Residual ammonia was 0. 07 mg / L.