异养硝化菌强化饱和基质材料降解水体氨氮的研究  

Ammonia nitrogen degradation by a microbial enhanced material

作　　者：孔强[1,2] 付荣恕[1] 任宗明[1,2] 

机构地区：[1]山东师范大学生命科学学院,山东济南250014 [2]中国科学院烟台海岸带可持续发展研究所,山东烟台264000

出　　处：《供水技术》2009年第5期6-9,共4页Water Technology

基　　金：国家水体污染控制与治理科技重大专项--海河流域水污染综合治理与水质改善技术与集成示范项目(2008ZX07209-007)

摘　　要：将优势菌技术运用于饱和基质材料中,考察基质材料对水中氨氮的吸附特性以及微生物原位强化饱和基质材料后对氨氮的降解效果。试验结果表明,沸石对氨氮的吸附量高于活性炭。对氨氮含量为110 mg/L的模拟富营养化水体进行360 h动态吸附后,沸石和活性炭吸附后出水中氨氮平均含量分别为73.31和89.18 mg/L,沸石显示出作为基质材料的优越性。对饱和基质材料进行异养硝化菌强化96 h后,沸石柱和活性炭柱出水氨氮平均含量分别降低8.58和17.31mg/L,并且活性炭和沸石表面形成稳定的生物膜。因此,对富营养水体在基质吸附基础上进行微生物降解的方法是可行的。The technology of dominant bacteria was used on the saturated medium materials. The medium material adsorption properties of ammonia and the ammonia nitrogen degradation by microorganisms were investigated in situ. The results showed that the concentrations of ammonia nitrogen in an artificial eutrophicated water were decreased from 110 mg/L to 73.31 mg/L and 89.18 mg/L in zeolite and activated carbon filter after 360 h dynamic adsorption. These results suggested that the adsorption capacity of zeolite was higher than activated carbon and zeolite was better than activated carbon for adsorption of the ammonia nitrogen. After 96 h degradation of these medium materials with heterotrophic nitrification microorganisms, the average concentrations of ammonia nitrogen in the artificial eutrophication water were decreased 8.58 mg/L and 17.31 mg/L in zeolite and activated carbon filter, respectively. The biofilm on the surface of activate carbon and zeolite was formed after 96 h. The results suggested that it was feasible to reduce the concentration of ammonia nitrogen in eutrophicated water with the microbial enhanced medium material.

关 键 词：微生物 活性炭 沸石 氨氮 

分 类 号：TU991.2[建筑科学—市政工程]