CAJ | 학술논문

为强化污水地下渗滤系统(Subsurface wastewater infiltration system,SWIS)的脱氮效果,以活性污泥(d<1.18 mm)、炉渣(d=2~5 mm)和草甸棕壤为主要组分,按体积比1∶8∶11配成一种生物基质,对比了该生物基质和草甸棕壤的理化性质、氨氮吸附能力、硝化及反硝化能力.结果表明：较草甸棕壤而言,生物基质具有适宜微生物生长的物理性质,氨化、硝化和反硝化菌群丰富；生物基质的理论最大氨氮吸附量为0.724 mg/g,而草甸棕壤仅为0.403 mg/g；生物基质的硝化强度由草甸棕壤的1.0 mg/(kg·h)提高到4.2 mg/(kg·h)；反硝化强度从0.9 mg/(kg·h)提高到2.9 mg/(kg·h).相同进水水力负荷时,添加生物基质系统对氨氮和总氮的平均去除率比添加草甸棕壤的系统分别提高了15.7%和12.0%.
위강화오수지하삼려계통(Subsurface wastewater infiltration system,SWIS)적탈담효과,이활성오니(d<1.18 mm)、로사(d=2~5 mm)화초전종양위주요조분,안체적비1∶8∶11배성일충생물기질,대비료해생물기질화초전종양적이화성질、안담흡부능력、초화급반초화능력.결과표명：교초전종양이언,생물기질구유괄의미생물생장적물이성질,안화、초화화반초화균군봉부；생물기질적이론최대안담흡부량위0.724 mg/g,이초전종양부위0.403 mg/g；생물기질적초화강도유초전종양적1.0 mg/(kg·h)제고도4.2 mg/(kg·h)；반초화강도종0.9 mg/(kg·h)제고도2.9 mg/(kg·h).상동진수수력부하시,첨가생물기질계통대안담화총담적평균거제솔비첨가초전종양적계통분별제고료15.7%화12.0%.
In order to enhance the nitrogen removal efficiency of a subsurface wastewater infiltration system(SWIS),a kind of novel bio-substrate was made,which was composed of activated sludge,coal slag and brown soil mixing in column ratio 1∶8∶1 1 .The physic-chemical properties,ammonia nitrogen ad-sorption,nitrification and denitrificaiton potential of brown soil and bio-substrate were compared.The col-umns filled with meadow brown soil and bio-substrate were labeled as SWIS and CSWIS(constructed sub-surface wastewater infiltration system),respectively.The results showed that comparing with meadow brown soil,bio-substrate had optimal physic-chemical property,favoring for the bacteria development.The maximum adsorption for ammonia nitrogen was 0.724 mg/g,significantly higher than that of meadow brown soil.The nitrification and denitrification potential of bio-substrate was 4.2 mg/(kg·h)and 2.9 mg/(kg·h).When the hydraulic loading rate was 4 cm/d,ammonia nitrogen and total nitrogen removal effi-ciencies of CSWIS was 81.4% and 80.8%,respectively,15.7% and 12.0% higher than SWIS.