Annual variations and the cause of the ammonia nitrogen concentration in effluent of a chemical industrial wastewater treatment

被引：0

作者：

He, Shangwei ^{[1
,2
]}

Zhang, Lei ^{[1
,2
]}

Zhang, Chao ^{[1
,2
]}

Liu, Bin ^{[3
]}

Shao, Juan ^{[1
,2
]}

Li, Pengzhang ^{[1
,2
]}

机构：

[1] Yancheng Academy of Environmental Protection Technology and Engineering, Nanjing University, Yancheng,Jiangsu,224002, China

[2] Institute of Water Environmental Engineering, Jiangsu Industrial Technology Research Institute, Yancheng,Jiangsu,224000, China

[3] Environmental Monitoring Station of Yancheng, Yancheng,Jiangsu,224002, China

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2018年 / 37卷 / 09期

关键词：

Atmospheric temperature - Wastewater treatment - Nitrification - Dissolved oxygen - Industrial water treatment - Nitrogen removal - Ammonia - Biochemical oxygen demand - Effluent treatment - Nitrogen;

D O I：

10.16085/j.issn.1000-6613.2017-2482

中图分类号：

学科分类号：

摘要：

The ammonia nitrogen(NH4+-N) concentration in effluent of a chemical industrial wastewater treatment plant had significant annual variations. The pH, concentrations of NH4+-N, anions, metals in influent were not the reasons for inhibiting nitrification and causing the NH4+-N concentration over the standard value in winter and spring. The continuous flow experiments in laboratory showed that dissolved oxygen and mixed liquor suspended solids did not inhibit the nitrification, and were not the reasons for NH4+-N concentration over the standard value in winter and spring. Further analysis showed that the air temperatures had significantly effect on the NH4+-N concentration in effluent and there were two different critical lowest air temperatures. In summer, NH4+-N concentration did not decrease as air temperature rise until it reach to critical lowest air temperature 19-21℃ and then it kept stable in effluent. In winter, NH4+-N concentration in effluent also kept stable as air temperature gradually decreases until the air temperature reach to another critical lowest air temperature 3-5℃ and then steady beyond the standard value. Addition of glucose can improve the removal rate of ammonia nitrogen when the air temperature was too low. © 2018, Chemical Industry Press. All right reserved.

引用

页码：3691 / 3698