化学沉淀法去除焦化废水中氨氮的影响因素研究

摘要

The chemical precipitation method was used to study on the ammonia-nitrogen removal in coking wastewater of a company in Tangshan. For the simulative wastewater, the effects of factors such as pH value, ammonia-nitrogen concentration, temperature, reaction time and dosage of precipitating agent [ n ( Mg2+):n ( PO3-4 ):n ( NH+4 ) ] were studied by parallel test to get the best condition. Under this condition, the ammonia-nitrogen in coking wastewater of the company was treated, and the higher removal rate was obtained.%采用化学沉淀法，对唐山市某公司焦化废水中的氨氮去除进行试验研究。通过配制模拟废水，选取pH值、氨氮的初始浓度、反应温度、反应时间和沉淀剂投加量[ n( Mg2+)：n( PO3-4)：n( NH+4)]等五个重要工艺条件，分别进行平行试验，确定最佳反应条件。在该条件下，对该公司焦化废水中的氨氮进行处理，取得较高的去除率。