村镇生活污水强化混凝处理实验研究

采用聚合氯化铝、硫酸亚铁及阳离子型高分子絮凝剂对村镇生活污水单独处理的效果进行比较，应用正交实验方法探讨了前述絮凝剂复合使用效果。结果表明，在pH为10、PAN投药量1ml／L、混凝时间2min、搅拌转速240r／min，以及絮凝时间10min、搅拌转速120r／min时，试验污水中污染物浊度、COD、SS、NH4^＋—N的去除率分别为99．63％、84．59％、64．59％及49．52％，出水水质达到了国家农田灌溉标准（GB5084—92），可用于农田灌溉，实现污水资源化。

Test of Coagulation in Treatment of Domestic Wastewater from Village and Small Town

This work regards the coagulation treatment for domestic wastewater from village and small town,and the Polymeric Aluminum Chloride(PAC),FeSO4 and cationic PAM were applied as cationic flocculants.The optimum coagulation conditions were determined by the orthogonal experiment methods.At the optional condition,the removal percentage of turbidity,SS,CODcr and NH+4-N could reach to 99.63%,64.59%,84.59% and 49.52%,respectively,the concentrations of CODcr and SS in the water treated have been reached to the stan...