磷酸铵镁沉淀法处理含高浓度氨氮制药废水的试验  

Experiment on the treatment of pharmaceutical wastewater containing high ammonia nitrogen by MAP precipitation

作　　者：郭涛[1,2] 卫琦 涂阳辉 黄冬根 GUO Tao;WEI Qi;TU Yanghui;HUANG Donggen(School of Resources&Environment,Ministry of Education,Nanchang University,Nanchang 330031,China;Key Laboratory of Poyang Lake Environment and Resource Utilization,Ministry of Education,Nanchang University,Nanchang 330031,China;Yeji District Audit Bureau of Lu'an,City,Lu'an Anhui 237431,China)

机构地区：[1]南昌大学资源与环境学院,江西南昌330031 [2]南昌大学鄱阳湖环境与资源利用教育部重点实验室,江西南昌330031 [3]六安市叶集区审计局,安徽六安237431

出　　处：《南昌大学学报（理科版）》2023年第1期64-68,共5页Journal of Nanchang University(Natural Science)

基　　金：国家自然科学基金资助项目(41967046,41363005)。

摘　　要：以某制药厂含高浓度氨氮制药废水作为研究对象,通过单因素实验和正交试验探究了磷酸铵镁(MAP)沉淀法的最佳工艺参数,通过XRD和FTIR测试技术,表征了沉淀物的组分和晶化效果。研究结果表明:在pH值为9.0~9.5、Mg/N=1.2:1、P/N=1:1时,氨氮的去除效果较好,其去除率可达96.12%,剩余氨氮浓度满足后续生化处理工艺要求;沉淀物的晶化效果较好,主要由磷酸铵镁和磷酸镁等混合物组成,NH+4以磷酸铵镁沉淀的形式得以去除。For the pharmaceutical wastewater containing high concentration of ammonia nitrogen in a pharmaceutical factory as the research object, the optimal processing parameters in the method of MAP precipitation were explored through single factor experiment and orthogonal experiment, and the composition and crystallization of the precipitate were characterized by XRD and FTIR testing techniques.The research results showed that the ammonia nitrogen removal effect was satisfactory and reached 96.12% when the pH value was between 9.0 and 9.5,the ratio of Mg to N was 1.2:1,and the ratio of P to N was 1:1.The remaining ammonia nitrogen concentration met the subsequent biochemical requirements.The crystallization effect of the precipitation was good and the precipitation was mainly composed of a mixture of magnesium ammonium phosphate and magnesium phosphate.NH+4was removed in the form of magnesium ammonium phosphate precipitation.

关 键 词：磷酸铵镁沉淀法 高浓度氨氮 制药废水 正交试验 

分 类 号：X703.1[环境科学与工程—环境工程]