摘要：
采用超声/臭氧（US/O3）工艺处理农药废水，废水BOD5/COD由0.03提高至0.55，EC50从11%增至52%，生物毒性降低78.85%。在一定范围内，随反应时间的增加和初始pH的升高，废水可生化性不断提高，生物毒性显著降低，但当初始pH大于9、反应时间超过120 min时，废水可生化性出现下降趋势；当初始pH大于11、反应时间超过120 min时废水生物毒性出现升高趋势。
关键词:
US/O3,
农药废水,
可生化性,
生物毒性
Abstract:
Ultrasonic/ozone(US/O3) combined process has been used for treating pesticide wastewater. It has effective capability,showing that the BOD5/COD of wastewater can be increased from 0.03 to 0.55,EC50 from 11% to 52% and the biological toxicity reduced by 78.85%. In a certain range,with the increase of reaction time and initial pH,the biodegradability of the wastewater can be improved continuously and the biological toxicity reduced obviously. However,BOD5/COD would drop slowly when pH is higher than 9 and the reaction time is more than 120 min,the biological toxicity would rise slowly when pH is over 11 and the reaction time exceeds 120 min.
Key words:
US/O3,
pesticide wastewater,
biodegradability,
biological toxicity
中图分类号:
熊正龙, 刘爱翠, 刘国伟, 孙德智. US/O3工艺改善农药废水可生化性和生物毒性的效能[J]. 工业水处理, 2014, 34(3): 65-67.
Xiong Zhenglong, Liu Aicui, Liu Guowei, Sun Dezhi. Study on the improvement of biodegradability and biological toxicity of pesticide wastewater by ultrasonic-ozone process[J]. INDUSTRIAL WATER TREATMENT, 2014, 34(3): 65-67.