摘要
在我国农村地区,化粪池仍然是许多家庭生活污水直排前的唯一处理设施。传统三格化粪池出水水质较差,造成了农村水环境污染,而对传统三格化粪池进行适当改进是解决污染问题的有效途径之一。为此,对传统三格化粪池进行了结构和功能的优化设计,在第1格设置由过流板隔开的预处理曝气池和预处理沉淀池,第2格保留厌氧发酵池,第3格由过流板分隔为生物接触氧化池和二次沉淀池。结果表明,稳定运行后,反应器对COD、N H4+-N、TP和SS的去除率分别为83.51%~88.56%、66.82%~74.17%、77.47%~81.12%和82.26%~88.57%,相较于传统三格化粪池有显著的提升。改进型农村三格化粪池实现了农村分散式污水的就地处理,且经济性和维护便利性符合农村污水处理设施的定位需求,可为农村三格化粪池的改造和新建提供参考。
In rural areas of China,septic tanks are still the only treatment facilities before the direct discharge of domestic sewage in many families.However,the effluent quality of the traditional three-chamber septic tanks is poor,resulting in the pollution of rural water environment.It will be one of the effective ways to solve the pollution problem through the modification of traditional three-chamber septic tank.Thus,the structure and function optimal design of traditional three-chamber septic tank was performed.In the first chamber,a pretreatment aeration tank and a pretreatment sedimentation tank were separated by a overflow plate.In the second chamber,the anaerobic fermentation tank was retained.And the third chamber was separated into a biological contact oxidation tank and a secondary sedimentation tank by a overflow plate.The results showed NH4+-N,TP and SS by the reactor could reach83.51%~88.56%,66.82%~74.17%,77.47%~81.12%,82.26%~88.57%,respectively,which had a significant improvement compared with the traditional septic tank.The modified rural three-chamber septic tank realizes the on-site treatment of decentralized sewage in rural areas,and its economy and maintenance convenience can meet the requirements of rural sewage treatment facilities,this provides a reference for the transformation and construction of rural three-chamber septic tank.
作者
王立东
刘德明
马世斌
傅振东
李伊然
薛藏藏
WANG Lidong;LIU Deming;MA Shibin;FU Zhendong;LI Yiran;XUE Zangzang(School of Civil Engineering,Fuzhou University,Fuzhou 350108,China;Fujian Rongqi Construction Engineering Co.Ltd.,Fuzhou 350301,China)
出处
《环境工程学报》
CAS
CSCD
北大核心
2020年第10期2831-2836,共6页
Chinese Journal of Environmental Engineering
基金
福州大学与福建省融旗建设工程有限公司“农村化粪池改进技术研究”合作项目(00501765)。
关键词
农村生活污水
三格化粪池
改进
预处理曝气
生物接触氧化
rural domestic sewage
three-chamber septic tank
modification
pretreatment aeration
biological contact oxidation
