摘要
提出了“DASB+W-SFCW”联合工艺,并运用该工艺对分散式生活污水进行了处理试验研究。DASB单元采用短时厌氧技术,去除颗粒有机物和部分溶解有机物,防止W-SFCW堵塞,保证W-SFCW单元脱氮所需的碳源。W-SFCW床优化了传统潜流人工湿地的水流流态,使污水在W-SFCW床内呈波式流动,充分地发挥了湿地系统降解污染物的能力。试验结果表明:“DASB+W-SFCW”联合工艺对生活污水具有较强的处理能力,当进水中COD,NH3-N,TP的平均质量浓度分别为268 mg/L,31.5 mg/L,5.5 mg/L时,其平均去除率分别达到80.7%,52.1%,89.7%,出水水质优于传统的二级生物处理工艺。
A combined technology of DASB （Down-flow Anaerobic Suspending Bed） and W-SFCW （Wavy Subsurface Flow Constructed Wetland） was presented and applied to the experimental study on decentralized domestic sewage treatment. DASB can remove the organic particle by its short-time anaerobic technology, thus preventing W-SFCW from jamming and affording enough carbon for denitrification. Compared with traditional SFCW, W-SFCW has the advantage of optimal flow regimes, and the wastewater in the bed flows wavily, thus increasing the efficiency of constructed wetland. The experiment shows that the DASB ＆ W-SFCW technology is excellent in the treatment of domestic sewage. When the concentration of COD, NH3-N and TP in influent was 268 mg/L, 31.5 mg/L and 5.5 mg/L respectively, the corresponding removal rates were 80.7 %, 52.1% and 89.7 %. The water quality of effluent of DASB ＆ W-SFCW is better than that of traditional bio-treatment technology.
出处
《水资源保护》
CAS
北大核心
2006年第3期56-59,共4页
Water Resources Protection
基金
江苏省教育厅高校科研基金资助项目(02KJB610004)
关键词
降流式厌氧紊动床
潜流人工湿地
生活污水
污水处理
down-flow anaerobic suspending bed （DASB）
subsurface flow constructed wetland
domestic sewage
wastewater treatment
