华北平原地区农村生活污水产污特征研究

Sewage Produced Characteristic of Rural Areas in North China Plain Region

为了解华北平原地区农村生活污水产污特征,准确评价农村生活污染状况,本研究选取华北平原地区典型农村(保定市徐水县荆塘铺村)不同收入水平的15户典型农户,对其生活污水的产污情况进行12个月(2010年8月至2011年7月)的调查和监测,得到农户的生活污水人均日产生量、pH、COD、TAN、TN和TP的产污系数。农户生活污水人均日产生量为21.03L·d-1·人-1,pH值为6.14,COD、TAN、TN和TP的产污系数分别为7.87、0.581、1.31g·d-1·人-1和0.0662g·d-1·人-1。各项指标从高到低依次为中收入水平农户,高收入水平农户和低收入水平农户,且高中收入水平农户与低收入水平农户各项指标差异性较显著。以上结果表明华北平原地区农村生活污水人均日产生量和污染物产污系数与收入水平有关。

In order to evaluate the status of rural domestic wastewater pollution in the North China Plain region, the rural domestic wastewater of 15 typical peasant households with different income levels in Jingtangpu Village, Xushui County, Baoding City was made a continuous in- vestigating and monitoring for 12 months, including the daily produced per capita, pH, chemical oxygen demand（COD）, total ammonia nitrogen（TAN ）, total nitrogen （TN） and total phosphorus （TP） of rural domestic wastewater.The mean value of sewage generated was 21,03 L·d-1·person-1, pH was 6.14, the sewage production coefficients of COD,TAN,TN and TP were 7,87 g·d-1 ,person-1, 0,581 g.d-1 ·person-1, 1.31 g·d-1·person-1 and 0.066 2 g·d-1 ·person-1. The households with middle income levels had highest indicators,followed by high and low income level households, and the difference between high, middle and low income level households was significant, these results indicated that the amount of sewage produced per capita and sewage production coefficients were related to the income.