一种低能耗的生物预处理反应器-重力流污水管道  

THE SEWER AS A REACTOR FOR PRE-TREATING WASTEWATER WITH LOW ENERGY

作　　者：王怡[1] 朱杜洁[1] 许小冰[1] 彭党聪[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《水处理技术》2012年第2期84-86,90,共4页Technology of Water Treatment

基　　金：教育部"长江学者与创新团队发展计划"创新团队(IRT0853)

摘　　要：以人工配制生活污水为对象,室温下采用四槽串联反应器模拟污水管道的推流特征,研究了污水管道中典型污染物的生物转化及生物量的沿程分布。结果表明,在污水停留时间160 min条件下,SCOD平均去除率高达73.4%,出水氨氮质量浓度平均高于进水26%,PO43--P质量浓度通过污水管道后趋于稳定值;连续运行80 d后,污水管道系统串联的4个反应槽中生物量的相对比例沿程依此递减,但生物活性依此增大。总之,在无需曝气、仅需少量(或无需)能耗条件下,重力流污水管道对于SCOD的去除、含氮有机物的水解以及磷浓度的缓冲作用明显,可以作为一种低耗的生物预处理反应器。Investigations were carried out aiming to assess wastewater treatment potential of sewer lines and biomass change along the pipe.A set of reactor installed by four slots in series was set up to model the plug flow of the sewer and was operated with synthetic wastewater to assess the transformations of the pollutants and processes taking part in sewer environment.The results showed that average removal efficiency of SCOD was 73.4% and ammonia nitrogen increased by mean percentage of 26% under the hydraulic retention time of 160 minutes,however PO43——P concentration tended to a stable value after flowing through the reactor.On the other hand,the quantity of biomass was reducing and the activity of biomass was enhancing along the sewer reactor.To sum up,it was a potential reactor for pre-treatment of wastewater using a gravity sewer because a significant organic removal,protein hydrolysis and phosphorus buffer took place with no or little energy during this process.

关 键 词：低能耗 预处理 生物反应器 污水管道 

分 类 号：X703.3[环境科学与工程—环境工程]