新型气浮设备去除污水厂二沉池出水TP和SS中试  

Removal of TP and SS from Effluent of Secondary Sedimentation Tank with Novel Air Flotation Equipment

作　　者：赵志太 李建 孔晓光 赵志能 李雪凝 苗志全 宋欣 张文博 乔海兵 孙士权[5] ZHAO Zhi-tai;LI Jian;KONG Xiao-guang;ZHAO Zhi-neng;LI Xue-ning;MIAO Zhi-quan;SONG Xin;ZHANG Wen-bo;QIAO Hai-bing;SUN Shi-quan(Henan Urban and Rural Planning and Design Research Institute Co.Ltd.,Zhengzhou 450044,China;Henan Water Quality Guarantee and Water Environment Restoration Engineering Technology Research Center,Zhengzhou 450044,China;Shanghai Dazhong Jiading Sewage Treatment Co.Ltd.,Shanghai 201800,China;Henan Lianglong Real Estate Co.Ltd.,Jiaozuo 454150,China;School of Hydraulic and Environmental Engineering,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]河南省城乡规划设计研究总院股份有限公司,河南郑州450044 [2]河南省水质保障与水环境修复工程技术研究中心,河南郑州450044 [3]上海大众嘉定污水处理有限公司,上海201800 [4]河南梁隆置业有限公司,河南焦作454150 [5]长沙理工大学水利与环境工程学院,湖南长沙410114

出　　处：《中国给水排水》2022年第9期18-24,共7页China Water & Wastewater

摘　　要：采用自主设计研发的新型气浮设备对北方某市污水厂二沉池出水进行深度处理,考察了混凝剂种类、水温、回流比、表面负荷等对去除TP和SS的影响。结果表明,在一定的表面负荷和回流比下,二沉池出水经新型气浮设备处理后TP浓度低于0.3 mg/L,且不受温度影响。在仅投加PAC时,该设备即可维持出水SS低于20 mg/L。相较于高效沉淀池,采用气浮处理二沉池出水的运行费用低,经济效益好,可作为城市污水厂深度处理工艺。A novel air flotation process was developed and used for advanced treatment of the effluent from the secondary sedimentation tank of the municipal wastewater treatment plant. The effects of coagulant type, water temperature, reflux ratio and surface load on the removal of TP and SS in the novel air floatation equipment were investigated. The results showed that the effluent concentration of TP was lower than 0.3 mg/L after the advanced treatment, and the TP concentration in effluent was stable and was not affected by the temperature. The novel air floatation equipment could reduce SS and maintain the effluent SS below 20 mg/L by only adding PAC. Moreover, compared with high-efficiency sedimentation tanks, the novel air flotation process had low operating costs and good economic benefits.

关 键 词：气浮 二沉池出水 深度处理 TP SS 

分 类 号：TU992[建筑科学—市政工程]