成都市城乡结合部排污渠污水水质规律分析  

Analysis of Water Quality of Sewage Ditch in Rural-Urban Fringe Area

作　　者：陈茂霞[1] 王欢[2] 周后珍[1] 谭周亮[1] 李旭东[1] 

机构地区：[1]中国科学院成都生物研究所,成都610041 [2]四川省环境保护科学研究院,成都610041

出　　处：《四川环境》2013年第3期66-71,共6页Sichuan Environment

基　　金：国家自然科学基金(51208489);四川省科技支撑项目(2011SZ0303)

摘　　要：本文以成都市郫县城乡结合部某排污渠为调查对象,以氨氮、CODCr、温度为主要指标,通过24h全天取样与以天为单位间歇取样的方式,考察其冬季、春季和夏季的水质变化。检测分析表明:该排污渠长期水质较稳定,冬季和春季各污染指标动态变化不大,氨氮和CODCr平均值分别为47.89mg/L和410.67mg/L;24h水质检测表明,水质整体波动较大,夜间氨氮和CODCr含量较白天的低且稳定;夏季降雨的稀释作用使得其中氨氮和CODCr含量降低至较低水平,且在没有再次降雨的情况下,需1d时间可恢复稳定;另外,异常水质出现较多,且氨氮和CODCr含量较高。根据相关研究结果,提出了该流域治理的相关建议。A sewage ditch in rural - urban fringe area in Pixian County, Chengdu was selected as the object of investigation in this study. The water quality variations in winter, spring and summer of this sewage ditch was studied by means of 24h sampling and every other day intermittent sampling. Ammonia CODcr and temperature were the main detection indexes. Detection analysis showed that water quality in this sewage ditch was long-term stable and the variation of each pollution index in winter and spring was not significant, the average value of ammonia nitrogen and CODcr were 47. 89mg/L and 410. 67mg/L respectively. 24h water quality testing showed that there is large fluctuation in water quality, the ammonia nitrogen and CODcr in the nighttime was lower and more stable than that in the daytime. Summer rainfall diluted the water in the sewage ditch and made the ammonia nitrogen, CODcr to a low level. It could be recovered in 1 day in the condition of no more rain. Abnormal water with high ammonia nitrogen and CODcr appeared frequently. Relevant suggestions for watershed management were proposed according to the research results.

关 键 词：城乡结合部 排污渠 水质规律 小流域 

分 类 号：X524[环境科学与工程—环境工程]