气浮-炭砂过滤工艺在好氧条件下强化污水处理的生物作用  

Biological Effects of Flotation-GAC Sand Filtration Process under Aerobic Condition on Enhanced Sewage Treatment

作　　者：杜振忠 张克峰[1,2] 王永磊 王琳[1,2] 

机构地区：[1]山东建筑大学市政与环境工程学院,山东济南250101 [2]山东省绿色建筑协同创新中心,山东济南250101

出　　处：《净水技术》2017年第12期94-98,共5页Water Purification Technology

基　　金：山东省科技发展计划(2014GSF120003);住房和城乡建设部科学技术项目计划(2014-K5-026);山东省自然科学基金(ZR2016EEM32);山东建筑大学博士基金(XNBS1511)

摘　　要：介绍气浮-炭砂过滤工艺处理污水的生物作用研究,比较了气浮-炭砂过滤工艺和直接过滤工艺对COD、UV_(254)和NH_3-N等与生物作用相关指标的去除效果。试验结果表明,在相同条件下气浮-炭砂过滤工艺比直接过滤工艺对COD、UV_(254)和NH_3-N去除率分别提高了25.3%、32.9%和33.2%。分析表明,这是由于气浮工艺能够提供充足的溶解氧,对微生物的生长起到促进作用,气浮-炭砂过滤工艺的生物量比直接过滤工艺提高38%~87%,这对实际生产中气浮-炭砂过滤工艺的运行具有一定的指导意义。Biological effects of flotation-GAC sand filtration process on the sewage treatment were introduced. Removal efficiency of COD, UV_（254）, NH_3-N and other indicators related to biological function was investigated by comparing flotation-GAC sand filtration process and direct filtration process. The results indicated that, under the same conditions, flotation-GAC sand filtration process was better than direct filtration process in removing pollutants COD, UV_（254） and NH_3-N, with an increased removal rate of 25.3%, 32.9% and 33. 2%, respectively. This was because the flotation process could provide sufficient dissolved oxygen for the growth of microorganisms. Biomass ratio of flotation-GAC sand filtration process, compared with direct filtration process, was increased from 38% to 87%. This was certainly guiding significant to the operation of flotation-GAC sand filtration process in actual production.

关 键 词：气浮-炭砂过滤 直接过滤 生物作用 溶解氧 生物量 

分 类 号：TU992.3[建筑科学—市政工程]