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.
作者
赵振
ZHAO Zhen(Nanjing Water Planning and Designing Institute Co.,Ltd.,Nanjing 210000,Jiangsu,China)
出处
《资源信息与工程》
2021年第1期118-121,共4页
Resource Information and Engineering
关键词
河道突发性污染
氨氮
折点加氯
最佳投加量
sudden river pollution
ammonia-nitrogen
breakpoint chlorination
optimal dosage
