【摘要】 在湖北省三峡库区农村选择了24户典型农户作为研究对象,分别对每户农户每个季节连续3 d的生活污水产生量、水质、主要污染物产污系数进行了分析。结果表明,湖北省三峡库区农村户平均生活污水日产生量为46.132 L,人均日产生污水量为17.530 L;人均日产生污水量受季节、地域、农户有无下水设施的影响,与农户收入水平无明显联系;农村生活污水水质不稳,其中COD、TP、TN及NH4+-N等指标的浓度变幅较大,仅pH变幅较小。生活污水水质中各项指标的平均水平pH为7.15,COD为656.22mg/L,TP为4.13 mg/L,TN为20.69 mg/L,NH4+-N为11.88 mg/L,表现为高碳中氮中磷的水质特性;生活污水的产污系数为COD 21.04 g/(人.d)、TP 0.12 g/(人.d)、TN 0.53 g/(人.d)、NH4+-N 0.30 g/(人.d);COD的产污系数受地域、季节、农户有无下水设施的影响,受农户收入水平影响不规律;TP的产污系数则受地域、季节、农户有无下水设施的影响,与农户收入水平无关;TN和NH4+-N产污系数则只受季节的影响。更多还原

【Abstract】 24 typical rural households from 4 counties in Three Gorges reservoir area of Hubei province were selected to study the producing rate of rural domestic wastewater(RDW),influencing factors,the features of the flow quality,and the producing coefficient of pollutant produced in 3 continuous days of each season.The result showed that the producing rate of RDW averaged at 17.530 L/d per capita;Which was affected by the location,season and income,sanitary appliance of the farmer.The quality of RSW was instable.The average pH and the concentration of COD,TP,TN and NH4+-N were 7.15,656.22 mg/L,4.13 mg/L,20.69 mg/L and 11.88 mg/L respectively;And the margins of COD、TP、TN and NH4+-N value were large,while the change range of pH was small.The producing coefficients of main pollutant from RDW were COD 21.04 g/(cap·d),TP 0.12 g/(cap·d),TN 0.53 g/(cap·d),NH4+-N 0.30 g/(cap·d) respectively.The producing coefficients of COD and TP were affected by the location,season and sanitary appliance,while that of TN and NH4+-N were only affected by season.更多还原