摘要
旅游景区粪污废水水质复杂且有机负荷波动大,在实际工程中实现长期稳定达标排放具有一定的挑战。为此,研究了A^(2)O-MBR工艺在旅游景区厕所高浓度粪污废水处理工程中的应用,重点对启动条件及运行工艺参数等进行了研究。结果表明,A^(2)O-MBR工艺用于处理旅游景区厕所粪污废水,缺氧池回流比为100%、好氧池回流比为200%,控制缺氧池及好氧池溶解氧质量浓度分别为0.4~0.6 mg·L^(−1)和1.5~3.0 mg·L^(−1),反应器出水COD、NH_(3)-N及TP平均质量浓度可分别达到为40.39、3.64和0.39 mg·L^(−1),最终出水满足《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准。
The wastewater of scenic spots is complex in constituents and its organic load is very unstable.It is a big challenge to achieve the discharge standard stably in actual projects for a long term.In this study,the engineering application of A^(2)O-MBR technology for the treatment of high-concentration faecal wastewater from toilets in scenic spots was fundamentally investigated.Employing an integrated A^(2)O-MBR reactor as a test platform,the start-up condition,and operational parameters of the treatment system were studied and optimized.The results showed that during the actual operation,the dissolved oxygen in the anaerobic tank,anoxic tank and aerobic tank should be maintained at 0.1~0.3,0.4~0.6,and 1.5~3.0 mg·L^(-1),respectively.The reflux ratios in anoxic tank and aerobic tank should be maintained at 100%and 200%,respectively.The average concentrations of COD_(Cr),NH_(3)-N and TP in the effluent of the reactor were 40.39,3.64 and 0.39 mg·L^(−1),respectively,which could meet the Grade A standard of“Urban Sewage Treatment Plant Pollutant Discharge Standard”(GB18918-2002).
作者
颜建国
苗时雨
兰华春
彭剑峰
汪诚文
余刚
YAN Jianguo;MIAO Shiyu;LAN Huachun;PENG Jianfeng;WANG Chengwen;YU Gang(School of Environment,Tsinghua University,Beijing 100084,China)
出处
《环境工程学报》
CAS
CSCD
北大核心
2022年第9期2895-2900,共6页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金面上资助项目(51978373)。
