人工快渗系统去除废水中氮磷的研究

Removal of phosphate and ammonia nitrogen from hogpen waste water by constructed rapid infiltration system(CRI)

研究废水(取自猪场废水)中磷酸盐和氨氮的去除,采用钢渣除磷酸盐,NaCl改性沸石除氨氮,考察不同比例钢渣和沸石混合材料同时去除磷酸盐和氨氮的效果。结果表明:钢渣对猪场废水中磷酸盐去除效果明显,沸石对猪场废水中氨氮有很好的去除效果;混合材料中活化沸石和钢渣的比例为4:1时,氨氮和磷酸盐的去除率分别为75.9%和89.7%。猪场废水进行两级处理后,便可达到磷酸盐和氨氮的排放标准。

Removal of phosphate and ammonia nitrogen from hogpen waste water was investigated. Phosphate was removed by steel slag, and ammonia nitrogen was removed by zeolite. The removal effect of phosphate and ammonia nitrogen by the mixed material of steel slag and zeolite was investigated. The results have shown that steel slag and zeolite can remove effectively phosphate and ammonia nitrogen from hogpen waste water. When the ratio of steel slag to zeolite is 4 ： 1 in the mixed material, the removal rates of phosphate and ammonia nitrogen are 75.9% and 89.7%, respectively. After twice removal, the concentrations of phosphate and ammonia nitrogen in the hogpen waste water can come up to the discharge standards.