阶式生物接触氧化对富营养化太湖水源水中溶解有机物的去除性能研究  

Study on performance of cascade biological contact oxidation for removing dissolved organic compounds from eutrophic raw water of Taihu Lake

作　　者：范超文[1,2] 朱光灿[2] 许卓[2,3] 

机构地区：[1]水利部四川省水利水电勘测设计研究院,成都610072 [2]东南大学环境工程系,南京210096 [3]中蓝连海设计研究院,连云港222004

出　　处：《环境工程学报》2011年第11期2494-2498,共5页Chinese Journal of Environmental Engineering

基　　金："十一五"国家科技支撑计划项目(2007BAC26B03);江苏建设厅科技计划项目(JS2007JH22)

摘　　要：构建阶式生物接触氧化反应器处理富营养化太湖水源水,对其净水效能进行研究。结果表明,在优化工况条件下,阶式生物氧化反应器的三阶对太湖水源水中DOC的累积去除率分别为34.4%、40.2%和47.5%,对BDOC的总去除率为68.4%,除生物降解外,填料拦截、生物吸附絮凝等物理、化学作用对去除原水中的DOC仍有重要作用。DOC分子量分级表明,太湖源水中含量最大的是分子量<500 Da的DOC,含量最小的是分子量在5 k～500 Da间的DOC。阶式生物接触氧化反应器对分子量<500 Da的DOC的去除率在60%以上,而出水中5 k～500 Da区间的DOC含量相比原水增加近1倍。Cascade biological contact reactor（CBCR） was conducted to treat eutrophic Taihu Lake raw water, and the purification efficiency was studied. Results indicated that under optimized technological conditions, the three cascade of CBCR could get an accumulated removal rates of 34.4% ,40.2% ,47.5% , respectively to DOC, and 68.4% to BDOC. Filler interception, biofilm adsorption and bioflocculation also took an important role to DOC removal besides biological degradation. Distribution of DOC molecular weight （MW） showed that DOC with MW lower than 500 Dalton took the greatest part in Taihu Lake raw water, and DOC with MW between 5 k to 500 Dalton took the minimum part. The CBCR could remove DOC with low MW effectively. The removal rate of DOC with MW below 500 Dalton reached more than 60%. While the content of DOC with MW between 5 k to 500 Dalton doubled relative to raw warter.

关 键 词：阶式生物接触氧化 富营养化水源水DOC BDOC分子量分布 

分 类 号：TU991[建筑科学—市政工程]