摘要
通过测定水耕植物过滤法 (HydroponicBio filterMethod ,HBFM)水质净化系统中底泥的硝化、反硝化潜力以及底泥中亚硝酸菌和硝酸菌密度 ,定量研究了该系统底泥的硝化及反硝化潜力沿水流方向的变化规律 .结果表明 ,中游底泥硝化潜力最大 ,为 4 . 76× 10 -6g/ (g·h) ;上游底泥反硝化潜力最大 ,为 8. 1× 10 -7g/ (g·h) ;底泥中亚硝酸菌的密度分布与硝化潜力的分布一致 .结果还表明 ,提高HBFM系统氮去除能力的关键在于改变硝化反硝化区域分布 ,从而提高系统的反硝化能力 .
The potential of nitrification and denitrification of sediment and the density of ammonium-oxidizing bacteria and nitrite-oxidizing bacteria in sediment in water quality purifying system with hydroponic bio-filter method (HBFM) were measured. The variation of nitrification and denitrification potential of the sediment along the stream way was quantitatively studied. The results show that among the sediments from front, middle and retral part of the stream way, the sediment from middle part reached a maximum nitrification potential of 4.76×10 -6 g/(g·h), while the sediment from front part reached a maximum denitrification potential of 8.1×10 -7 g/(g·h). The distribution of nitrification potential accords with the ammonium-oxidizing bacteria density. The key for improving nitrogen removal efficiency of HBFM system consists in changing nitrification & denitrification region distributing and accordingly enhances denitrification process.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2005年第2期93-97,共5页
Environmental Science
基金
国家'十五'重大科技专项 (2 0 0 2AA60 10 11 0 3 )
江苏省自然科学基金 (BK2 0 0 40 75 )
关键词
水耕植物过滤法
底泥
硝化潜力
反硝化潜力
hydroponic bio-filter method (HBFM)
sediment
nitrification potential
denitrification potential
