摘要
针对受污染的流入滇池的河流河水,采用具有曝气段和缺氧段的两段式多级土壤渗滤(multi-soil-layering,MSL)系统,开展了在缺氧段添加非水溶性可生物降解多聚物(BDPs)材料PBS颗粒的强化脱氮除磷研究.结果表明,添加PBS碳源可有效解决传统MSL系统因碳源不足而导致的脱氮效果不理想的问题.在河水污染较轻及较重两种情况下,系统对TN的平均去除率分别达到78%、85%,平均单位表面去除负荷分别为9.09g·m-·2d-1、24.55g·m-·2d-1;TP平均去除率分别达到92%、98%,平均单位表面去除负荷分别为0.76g·m-·2d-1、2.02g·m-·2d-1.此外,系统对COD的平均去除率可达到75%以上.
To investigate the polluted river water flowing into the Dianehi Lake, we carried out a study aiming at strengthening nitrogen and phosphorus removal through adding PBS particles, a kind of water-insoluble biodegradable polymers pellets （BDPs） to anoxic phase, by using a two-stage multi-soil- layering （MSL） system with aeration phase and anoxic phase. The results indicated that the addition of PBS carbon resource can effectively improve the poor removal efficiency of nitrogen in traditional MSL system for the lack of carbon resource. Under the conditions of serious and light pollutions, the average removal rate of TN were 78% and 85% , and the reduction loads were 9.09 g·m^-2. d^-1and 24.55 g·m^-2. d^-1 , respectively. The average removal rate of TP were 92% and 98% , and the reduction loads were 0.76 g· m ^-2 d^-1 and 2.02 g· m^-2· d ^-2 , respectively. In addition, the average removal rate of COD were up 75%.
出处
《环境科学学报》
CAS
CSCD
北大核心
2012年第4期909-915,共7页
Acta Scientiae Circumstantiae
基金
国家重大水专项(No.2008ZX07102-003)
国家自然科学基金面上项目(No.50978001)
国际合作研究项目(No.2009DFA91780)~~
关键词
多级土壤渗滤系统
BDPs
河道污水
脱氮
除磷
multi-soil-layering system
biodegradable polymers pellets
river wastewater
the removal of nitrogen
the removal of phosphorus
