Research on detection and treatment measure of volatile organic pollutant in urban drainage system
In response to the problem of excessive volatile organic pollutant content in the target urban sewage drainage system,the typical volatile organic pollutant content in the water sample at the outlet of the drainage system was detected,the original coagulation treatment process was improved to form a coagulation+activated carbon adsorption treatment process,and the relevant treatment parameters were optimized.The results showed that after the original coagulation process,the contents of three volatile organic pollutants in the sewage were all relatively high,unable to meet the discharge requirements specified in GB 18918-2002.D-type activated carbon had the best treatment effect on sewage.The larger the amount of activated carbon added,the longer the adsorption time,the lower the content of volatile organic pollutants in sewage,and the higher the removal rate.As the pH value of the sewage increased,the content of volatile organic pollutants in the sewage first decreased and then increased,whereas the removal rate first increased and then decreased.The optimal treatment parameters were determined to be D-type activated carbon,with a mass concentration of 150 mg/L of activated carbon added,an adsorption time of 6 hours,and a sewage pH value of 5.Under such conditions,the contents of the three volatile organic pollutants in the sewage could meet the discharge requirements specified in GB 18918-2002.
万方数据
维普
