CAJ | 학술논문

为了解重庆三峡库区农村生活污水排放特征,正确评价农村生活污染状况,选取重庆三峡库区3个行政区中不同经济收入水平、有无下水设施的18户典型农户为监测对象,对其生活污水日产生量、pH、COD、TP、TN、TAN等6项指标进行了连续12月的跟踪监测.结果表明,18户对象农户生活污水人均日产生量、pH、COD、TP、IN、TAN等指标的平均水平分别为:15.22 L·cap-1,d-1、6.67、838.93 mg·L-1 4.19 mg·L-1.53.60 mg·L-1、13.39 mg·L-1,具有人均污水日产生量明显低于而各特征指标的浓度明显高于城镇生活污水的特点;COD、TP、TN、TAN浓度随季节的变化表现出夏季浓度较低,冬季浓度较高的规律,且COD、TP、TN、TAN浓度之间具有显著的正相关性.此外,利用SPSS软件对影响农村生活樗水排放特性的地域、季节、农户收入水平和有无下水设施等因素进行了分析,其结果显示:农村生活污水人均日产生量的主要影响因素为地域,COD的主要影响因素为地域、收入水平和季节,TP的主要影响因素为地域、有无下水,TN和TAN的主要影响因素为季节.
위료해중경삼협고구농촌생활오수배방특정,정학평개농촌생활오염상황,선취중경삼협고구3개행정구중불동경제수입수평、유무하수설시적18호전형농호위감측대상,대기생활오수일산생량、pH、COD、TP、TN、TAN등6항지표진행료련속12월적근종감측.결과표명,18호대상농호생활오수인균일산생량、pH、COD、TP、IN、TAN등지표적평균수평분별위:15.22 L·cap-1,d-1、6.67、838.93 mg·L-1 4.19 mg·L-1.53.60 mg·L-1、13.39 mg·L-1,구유인균오수일산생량명현저우이각특정지표적농도명현고우성진생활오수적특점;COD、TP、TN、TAN농도수계절적변화표현출하계농도교저,동계농도교고적규률,차COD、TP、TN、TAN농도지간구유현저적정상관성.차외,이용SPSS연건대영향농촌생활저수배방특성적지역、계절、농호수입수평화유무하수설시등인소진행료분석,기결과현시:농촌생활오수인균일산생량적주요영향인소위지역,COD적주요영향인소위지역、수입수평화계절,TP적주요영향인소위지역、유무하수,TN화TAN적주요영향인소위계절.
Domestic wastewater is an important source of rural environmental pollution while less study is reported on it.In order to evaluate the status of rural domestic wastewater pollution in the Three Gorges Reservoir Region,18 typical peasant households with different income levels and life styles in three administrative districts were investigated and characteristic indices of rural domestic wastewater,including the daily discharge per capita,pH,chemical oxygen demand(COD),total phosphorus(TP),total nitrogen(TN)and total ammonia nitrogen (TAN)of rural domestic wastewater,were made a continuous monitoring for 12 months for them.The results showed that the average values of the daily discharge per capita,pH,COD,TP,TN,TAN were 15.22 L·cap-1·d-1,6.67,838.93 mg·L-1,4.19 mg·L-1,53.60 mg·L-1 and 13.39 mg·L-1 respectively.The daily discharge per capita of rural domestic wastewater was much lower than that of municipal domestic sewage,but the concentrations of other indices were much higher.The concentrations of the indices,including COD,TP,TN and TAN among which there were significant positive correlations,had an obvious change with season,namely lower in the summer and higher in the winter.Furthermore,factors of influencing rural domestic wastewater discharge characteristic,including region,season,income level and sewer facility,were analyzed by the software SPSS.The results indicated that region played a dominant role in the daily discharge per capita of rural domestic wastewater,that the concentration of COD was influenced by region,income levels and season,and that region and sewer facility had a deep effect on the concentration of TP,while the main influencing factor for the concentration of TN and TAN was the season.