折点加氯法去除氨氮应用于河道突发性污染中的试验研究及其应用  

Experimental study and application of breakpoint chlorination method in removal of ammonia-nitrogen used in sudden river pollution

作　　者：赵振 ZHAO Zhen(Nanjing Water Planning and Designing Institute Co.,Ltd.,Nanjing 210000,Jiangsu,China)

机构地区：[1]南京市水利规划设计院股份有限公司,江苏南京210000

出　　处：《资源信息与工程》2021年第1期118-121,共4页Resource Information and Engineering

摘　　要：河道日常管理中,时有突发性污染事件发生,氨氮超标污染最为常见,而且运用生物法处理,在短时间内得不到明显的去除效果。本实验采用折点加氯法去除氨氮废水,通过控制次氯酸钠的投加量,改变氨氮与有效氯的比例,利用次氯酸钠的强氧化性,最终将水中的氨氮完全转化为氮气而去除。本文分析废水中氨氮浓度与投加次氯酸钠的定量关系,确定次氯酸钠的最佳投加量,并在实际运用中验证了其准确性与可行性。In the daily management of river,sudden pollution occurs from time to time,and ammonia-nitrogen pollution is the most common one.Biological treatment cannot achieve obvious removal effect in a short time.By controlling the dosage of sodium hypochlorite to change the ratio of ammonia-nitrogen and active chlorine,ammonia-nitrogen in water can be completely converted into nitrogen and removed owing to the strong oxidizability of sodium hypochlorite.This paper analyzed the quantitative relationship between the concentration of ammonia-nitrogen in liquid waste and the dosage of sodium hypochlorite,determined the optimal dosage of sodium hypochlorite,and verified its accuracy and feasibility in practical applications.

关 键 词：河道突发性污染 氨氮 折点加氯 最佳投加量 

分 类 号：X52[环境科学与工程—环境工程]