高效藻类塘处理农村面源污水的试验研究  

TREATMENT OF WASTEWATER FROM NON-POINT SOURCE IN RURAL AREAS WITH HIGH-RATE ALGAL POND(HRAP)

作　　者：孙家君[1] 马莉[2] 李海翔[3] 林华[3] 姜彬慧[2] 

机构地区：[1]北京桑德环境工程有限公司,北京101102 [2]东北大学资源与土木工程学院,沈阳110819 [3]桂林理工大学环境科学与工程学院,广西桂林541004

出　　处：《环境工程》2015年第1期67-71,104,共6页Environmental Engineering

基　　金：水体污染控制与治理科技重大专项(2013ZX07202-010-05);辽宁省科学事业公益研究基金项目(GY2014-C-011)

摘　　要：目前我国农村生活污水排放量不断增加,但处理情况却不容乐观,96%的村庄未建设排水渠道和污水处理系统,造成了农村环境的严重污染。以模拟农村面源生活污水(简称污水)为研究对象,利用高效藻类塘小试装置对污水处理的最佳工艺条件、影响因素及处理机理开展了系统的试验研究。研究结果表明:在确定藻类最佳培养基的基础上,藻类塘脱氮除磷的最佳条件为全曝气、温度为24~35℃、光照强度为4 000 Lux、p H为7.5,藻类浓度为8×105个/m L,此时藻类塘对污水中NH+4-N去除率高达95%以上,TP去除率达60%以上,COD去除率高达90%以上。Currently,the annual emission load of rural domestic sewage is increasing steadily in China,while the treatment of them is not optimistic that in 96% of the villages drainage and sewage treatment systems hadn’t been built,bringing about severe environmental contamination in rural areas. To research the rural non-point source domestic sewage,a pilot apparatus for high rate algal pond( HRAP) was used to treat the artificial rural non-point source domestic sewage and the optimum operational conditions,impact factors and reaction mechanism were systematically investigated during the process.Based on the optimal culture medium for the algae,the optimum conditions for nitrogen and phosphorus were given: the maximum removal rate of NH+4- N,TP and COD exceeded 95%,60% and 90% respectively in the HRAP under the optimal operational conditions of full aeration,temperature of 24 ~ 35 ℃,light intensity of 4 000 Lux,p H 7. 5 and algae concentration of 8 × 105/ m L.

关 键 词：农村面源污水 高效藻类塘 氨氮 

分 类 号：X703[环境科学与工程—环境工程]