摘要：

用电絮凝法深度处理污水二级处理厂出水,解决了前面工艺除磷效果不太理想的问题。取二级污水处理厂出水,测定了电流密度、电极间距、原水pH以及电解时间等因素对电絮凝法深度除磷效果的影响。试验表明:电絮凝法深度除磷的效果明显;在电解密度为7.82 A/m²,电极间距为15 mm,水样pH保持在中性或弱碱性条件下,电解时间为15～20 min时,深度处理装置对总磷的去除符合经济原则。

关键词: 电絮凝, 除磷, 污水处理

Abstract:

The effluent from a secondary sewage treatment plant has been further treated by a bench-scale electrolytic cell with aluminum electrodes to remove phosphorus by means of electrocoagulation． The effects of current density，electrode spacing，pH and electrolytic time on the advanced dephosphorization are analyzed. The results show that the eletrocoagulation process removes phosphorus effectively and the optimal treatment conditions are as follows: current density is 7.82 A/m²，electrode spacing 15 mm，pH of water sample in neutral or weak alkaline conditions and electrolytic time 15 -20 min. This device relates well with the economical principle of total dephosphorization.

Key words: electrocoagulation, dephosphorization, sewage treatment

中图分类号: 

• X703.1