CAJ | 학술논문

对一种新型生物膜载体用于城市污水处理进行了试验研究.试验条件下,生物膜法挂膜过程一般需7～15d,生物膜厚在0.5～1.0mm左右,颜色呈淡黄色或淡褐色,膜内微生物主要有原生动物和后生动物,个数多,活性高.溶解氧、水力停留时间是主要的控制参数,当原水COD为100～200 mg·L~(-1)时,最优控制条件为DO质量浓度为3～4mg·L~(-1),HRT为14 h.处理后出水COD、BOD_5、SS的去除率分别达到75%、80%、85%以上.采用这种载体处理城市污水挂膜速度快、污泥量少、适应性好.
대일충신형생물막재체용우성시오수처리진행료시험연구.시험조건하,생물막법괘막과정일반수7～15d,생물막후재0.5～1.0mm좌우,안색정담황색혹담갈색,막내미생물주요유원생동물화후생동물,개수다,활성고.용해양、수력정류시간시주요적공제삼수,당원수COD위100～200 mg·L~(-1)시,최우공제조건위DO질량농도위3～4mg·L~(-1),HRT위14 h.처리후출수COD、BOD_5、SS적거제솔분별체도75%、80%、85%이상.채용저충재체처리성시오수괘막속도쾌、오니량소、괄응성호.
The period of biomass cultivation was7～15 d. and the thickness of biofilm grew on the surface of the crushed stone globular aggregates、was about 0.5～1.0mm with light brown color. A large amount of microbes included prozoa and metazoa Were-detected by microscope; The dissolved oxygen(DO)and hydraulic detention time(HRT)are main running parameters for this experiment; COD removed rate was mole than 75%, and BOD, removed rate was more than 80%. SS removed rate was more than 85% and the qualities of effluent water reached the standard of wastewater when DO was 3～4 mg·L~(-1 )and HRT was controlled at 14 h, respectively; The period of biomass cultivation was short, there were no excess sludge discharge during running and the applicability of membrane was powerful with the method of bio-membrane carrier used for municipal wastewater.