郑州大学学报（工学版）2013，Vol.34Issue(4)：81-84,4.DOI:10.3969/j.issn.1671-6833.2013.04.019
磷酸铵镁沉淀法回收猪场废水中氮磷的中试研究
A Medium-Scalestudy of Recovery of Nitrogen and Phosphorus by Struvite Crystallization from Swine Wastewater
摘要
Abstract
In view of the problems of shortage of carbon source and excess of nitrogen content in traditional nitrogen and phosphorus removal,this paper adopts the method of magnesium ammonium phosphate (MAP) crystallization to recover a part of N and P to increase the ratio of carbon to nitrogen,which is beneficial for following biological treatment.The results show that the optimal reaction condition,the molar ratio of n (Mg) ∶ n(N) ∶ n(P) =1.2∶ 1∶ 0.9,was obtained through single factor experiment when choosing MgCl2 · 6H2O Na3 PO4 · 12H2O as magnesium source and phosphorus source.In this condition,the content of N,P2O5 and MgO of the sediment,slow-release organic fertilizer,recovered is 4.1％,40.77％ and 15.85％,respectively.After recovering,the pH of the wastewater is about 8.5,the ratio of n (BOD5) ∶ n (N) ∶ n (P) almost 95 ∶ 5 ∶ 1,the concentration of residual nitrogen and phosphorus approximately 170 mg/L and 20 mg/L,it can be reduced by with by microorganism treatment.关键词
猪场废水/磷酸铵镁/Na3 PO4·12H2OKey words
swine farm wastewater/ magnesium ammonium phosphate/ Na3PO4 · 12H2O分类
资源环境引用本文复制引用
王岩,彭凯,王克科..磷酸铵镁沉淀法回收猪场废水中氮磷的中试研究[J].郑州大学学报（工学版）,2013,34(4):81-84,4.基金项目
河南省科技攻关计划资助项目(082102350003) （082102350003）
