摘要
为实现化工剩余污泥的有效治理,采用湿式氧化法进行间歇处理,考察了温度和氧化剂用量对污泥处理效果的影响。通过实验确定最佳的工艺条件为:污泥总COD(化学需氧量)21230mg/L,反应温度为240℃,反应时间为60min,氧气用量为1.1倍理论需氧量。在此条件下,总COD去除率达到71.3%,污泥体积减少84%,液相(五日生化需氧量)BOD5/COD为0.56,可生化性显著提高。湿式氧化法是治理化工剩余污泥的有效处理技术。
The experimental study was carried out for effective treatment of chemical excess activated sludge. The sludge was treated in a batch reactor by wet air oxidation process. The effects of operational conditions inclu ding temperature and oxidant dose on sludge treatment were investigated. The optimum operational conditions were as follows： total COD 21230mg/L, reaction temperature 240-C, reaction time 60min, oxygen dose 1.1 SOR（stoi chiometric oxygen requirement）. Under these conditions, total COD removal rate was 71.3%, Sludge volume de- creased by 84%, liquid BODs/COD was 0.56, the biodegradability of discharge was significantly improved. The re sults showed that wet air oxidation process is effective for chemical excess activated sludge treatment.
出处
《精细与专用化学品》
CAS
2017年第5期29-33,共5页
Fine and Specialty Chemicals
基金
辽宁省科技计划项目(2015229004)
