Superiority and Application of Low-concentration Ozidant Method for Detecting COD of High-chlorine Wastewater
As one of the most important indicates in water quality monitoring, the chemical oxygen demand (COD) is a regularly- measured item characterizing organic matter. However, the existence of excessive chloride ions directly influences the accuracy of COD determination. So the research of high-chlorine wastewater is becoming more and more significant for industrial production and environmental protection. At present, the standard method for COD measurement is based on GB11914-89 in China, but there are some differences between the experimental data and the actual data in using the method under some circumstances, especially when detecting high-chlorine wastewater with low COD. The present paper determines the method in the following respects in order to solve the problems of detecting the COD of high-chlorine wastewater in a particular case. First, the proper condition such as sampling time, sampling location and the time of the test, etc. is decided. Second, several different experiments are carried out to find out a better way---the low-concentration oxidant method, to ensure the accuracy and precision of this method as far as the feasibility and security is concerned. Finally, some samples are tested and some reliable findings are obtained. In conclusion, the experiment demonstrates that the method established in this paper is superior for measuring the COD of high-chlorine wastewater in this particular case.
chemical ozygen demand high-chlorine wastewater the low-concentration ozidant method
Guo Bin Li Bin
College of Oceanography Institute, Harbin Institute of Technology at Weihai, Weihai, China,264209 College of Chemical Technology and Environment, North University of China, Taiyuan, China, 030051
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
2999-3002
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）