旋转带式预滤机除砂试验研究  

Experimental Study on Degritting Efficiency of Rotary Belt-type Pre-filter

作　　者：岳耀冬 李军[1] 王昌稳[1] 卞伟[1] 邓海亮[1] 王盟[1] 侯爱月 李伟[2] YUE Yao-dong LI Jun WANG Chang-wen BIAN Wei DENG Hai-liang WANG Meng HOU Ai-yue LI Wei(Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China Gaobeidian WWTP, Beijing Drainage Group Co. Ltd., Beijing 100022, China)

机构地区：[1]北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124 [2]北京城市排水集团有限责任公司高碑店污水处理厂,北京100022

出　　处：《中国给水排水》2016年第23期72-75,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2014ZX07201-011);国家自然科学基金资助项目(51078008);北京工业大学研究生科技基金资助项目(ykj-2013-10459)

摘　　要：采用预滤机去除曝气沉砂池水与砂水分离器进水的泥砂,探究预滤机优化传统的污水一级处理工艺的可行性。研究发现,预滤机对曝气沉砂池水中SS的去除率为30.6%,低于砂水分离器对SS的去除率,主要是由于曝气沉砂池中部的水所含泥砂浓度低、粒径较小。预滤机所产泥渣的含水率为70.3%,低于砂水分离器泥渣的含水率。以砂水分离器进水为原水时,预滤机对SS和VSS的去除率分别为52.4%和62.5%,优于砂水分离器的处理效果;过滤泥渣的含水率和VSS含量分别为67.7%和41.5%,均低于砂水分离器所产泥渣(分别为76.1%和77.8%)。预滤机干污泥产率为0.224 kg/m3污水,是砂水分离器的1.48倍。预滤机产生的泥渣粒径分布更加均匀,粒径小的泥砂所占比例更高;并且,预滤机对COD也有一定的去除效果。The feasibility for optimizing the primary sewage treatment process by the pre-filter was studied by removing the sand in the aerated grit water and the influent of the sand-water separator through the filtration function of the pre-fiher. The results showed that the removal efficiency of SS in aerated grit water by pre-filter was 30.6% , which was lower than that by sand-water separator due to the low sand concentration and small particle size in the middle of aerated grit. The water content of the sludge filtered by the pre-fiher was 70.3 % , which was lower than that in the sand-water separator sludge. When using the influent of the sand-water separator as raw water, the removal efficiencies of SS and VSS by the pre- filter were 52.4% and 62.5% , respectively, which were better than that by sand-water separator. The water content and VSS of the sludge filtered by the pre-fiher were 67.7% and 41.5%, respectively, which were lower than 76.1% and 77.8% achieved by the sand-water separator. The dry sludge yield of the pre-fiher was 0. 224 kg/m3 sewage, which was 1.48 times that of the sand-water separator. The particle size distribution of sludge generated by the pre-filter was more homogeneous while the ratio of the small particle size sludge was higher. Moreover, the pre-filter also had certain removal effect on COD.

关 键 词：预滤机 除砂 一级处理 污水处理 

分 类 号：X703[环境科学与工程—环境工程]