去除污水中总磷的两种方法效果比较

Comparison of Two Methods for Removing Total Phosphorus From Sewage

利用磁粉和聚合氯化铝联合除磷法和聚合氯化铁除磷法这两种方法,研究了它们对于高含磷污水和低含磷污水中总磷的去除效果,通过计算去除率,对两种方法的去除效果进行了比较,实验中总磷的测定方法采用过硫酸钾消解-钼酸铵分光光度法,实验结果表明:磁粉和聚合氯化铝联合的去除效果较好,对于高磷污水,当磁粉浓度为300mg/L时,去除率最高,达到了87.25%,出水中磷的浓度为9.153mg/L;对于低磷污水,当磁粉的浓度为300mg/L时,去除率最高,为56.01%,出水浓度为0.545mg/L。

The removal of total phosphorus in high-phosphorus wastewater and low-phosphorus wastewater was studied by using magnetic powder and polyaluminum chloride combined phosphorus removal method and polyferric chloride dephosphorization method.Comparedwith the removal effects of the two methods,themethod for determination of total phosphorus in the experiment was carried out by potassium persulfate digestion-ammonium molybdate spectrophotometry.The experimental results show that the combined effect of magnetic powder and polyaluminum chloride is better.For high-phosphorus wastewater,the removal rate is the highest,reaching 87.25%.The concentration of phosphorus in the effluent is 9.153 mg/L while the magnetic powder concentration is 300 mg/L.For the low-phosphorus wastewater,when the concentration of the magnetic powder is 300 mg/L,the removal rate was the highest,56.01%,and the effluent concentration was 0.545 mg/L.