CAJ | 학술논문

以凹土、炭粉和聚乙烯泡沫为主要原料制备悬浮空心凹土载体,应用于三相生物流化床处理低浓度有机废水.考察了温度对凹土滤料的形貌、强度和比表面积的影响,以及在不同曝气量和水力停留时间(HRT)时凹土悬浮滤料对氨氮和化学需氧量(COD)的处理情况.结果表明,煅烧温度为800℃时,制得强度91 N,比表面积为32.16 m2/g,表面粗糙、孔隙发达、耐酸碱的理想空心悬浮滤料.当曝气量为0.25 m3/h 时,COD和氨氮值降低率最大值分别为92.7%和95.4%;当 HRT 为2 h 时,COD 和氨氮值降低率最大值分别为91.5%和93.4%.
이요토、탄분화취을희포말위주요원료제비현부공심요토재체,응용우삼상생물류화상처리저농도유궤폐수.고찰료온도대요토려료적형모、강도화비표면적적영향,이급재불동폭기량화수력정류시간(HRT)시요토현부려료대안담화화학수양량(COD)적처리정황.결과표명,단소온도위800℃시,제득강도91 N,비표면적위32.16 m2/g,표면조조、공극발체、내산감적이상공심현부려료.당폭기량위0.25 m3/h 시,COD화안담치강저솔최대치분별위92.7%화95.4%;당 HRT 위2 h 시,COD 화안담치강저솔최대치분별위91.5%화93.4%.
Suspended attapulgite carrier was produced from attapulgite, coal powder and polyethylene foam, and applicated to treat low concentration organic wastewater in three phase fluidized bedreactor. Effect of temperature on pattern, instension, specific surface area of attapulgite carrier was studied, and effect of hydraulic retention time(HRT) and aeration amount on NH4+-N and chemistry oxygen demand (COD) disposal was studied. The result showed that when the roasting temperature was at 800 ℃, the carrier instention was 91 N, the specific surface area was 32.16 m2/g, the surface is rough, the taperture is much, physics and chemistry Performance is fine. When aeration amount was 0.25 m3/h, the maximum COD and NH4+-N value decrease rate was 92.7% and 95.4%. When HRT was 2 h, the maximum COD and NH4+-N value decrease rate was 91.5% and 93.4%.