生态土壤渗滤系统启动周期研究  

A study on the start-up stage of an eco-soil infiltration system

作　　者：潘晶[1] 李海波[2] 孙铁珩[1] 胡筱敏[1] 

机构地区：[1]东北大学资源与土木工程学院 [2]沈阳大学沈阳环境工程院重点实验室,沈阳110044

出　　处：《安全与环境学报》2008年第1期89-91,共3页Journal of Safety and Environment

基　　金：国家高科技发展计划863项目(2002AA601022);辽宁省教育厅青年基金项目(2005246)

摘　　要：利用室内模拟试验装置,考察了4种生态土壤渗滤系统在0.1m3/(m2.d)的水力负荷条件下对生活污水中TP、COD和NH3-N的去除效果及启动周期;同时对整个系统及同类生态工艺启动周期的判断方法做了探讨。研究结果表明,生态土壤渗滤系统对TP、COD和NH3-N的启动周期分别为15～27d、24～40d和24～26d;土壤渗滤系统对TP的启动周期最短,对COD的启动周期最长;处理系统启动周期的判断原则是综合考察系统对主要污染物各自的启动周期,以最长的作为系统启动周期。4组试验中,1#和2#系统的启动周期为40d;3#和4#的为24d。This paper is to introduce the authors＇ study on the beginning stage of an eco-soil infiltration system in a laboratory experimental way for domestic sewage processing. The experiment has been conducted under 0.1 m^2/（m2·d） hydraulic loading rate by using 4 types of soil with the purpose to find the removal effect and start-up stage performance. As a matter of fact, preliminary study has been done to evaluate the situation of the beginning stage of the ESIS and the effects of the methods for the similar processes. The experiment results show that the start-up stage can achieve a removal effect of TP, COD and their NH3 - N are 15 - 20 d, 24 - 40 d and 24 - 26 d, respectively. The longest start-up stage is with COD, while the shortest is with TP. In addition, the reaction mechanisms of such systems may contain physical and chemical adsorption with biochemical and ecological effect. It is supposed that in the start-up stage of each mechanism is： at the beginning, physical and chemical adsorption is thought of as finished as soon as the completion of biochemical process. A week later, just when the pollutant index of the effluent was made to meet the demands of the standards, the start-up of biochemical effect can be considered as completed. The ecological effect gained from the micro-ecosystem establishment and stabilization actually relies on the quality of the effluent. If it meets the requirement of the standards even though fluctuated, the start-up of ecological effect could also considered as finished. Even if it fails to meet the standard and is fluctuated, a week later, it will be able to meet the demands. Thus, as an entire sewage treating system, its start-up stage would be the longest one of the main research indexes.

关 键 词：水污染防治工程 土壤渗滤 生活污水 启动周期 

分 类 号：X703.1[环境科学与工程—环境工程]