摘要
本文采用一体式膜生物反应器(SMBR)-复合垂直流人工湿地(IVCW)组合工艺(SMBR-IVCW)系统,研究了该系统对复合废水的净化效果。结果表明,当系统进水为CODCr397～890mg.L-1、氨氮9.40～27.1mg.L-1、TP4.30～10.7mg.L-1、TN45.9～75.8mg.L-1的条件下,在SMBR和IVCW的水力负荷分别为1000L.d-1和375mm.d-1的最优工况下运行,系统CODCr、NH3-N、TN和TP的去除率分别为97.5%、99.0%、59.6%和65.2%;系统进出水中氮的形态组成发生了显著变化;SMBR-IVCW系统在高浓度综合污水处理方面具有良好的潜力。
With the improvement of wastewater discharged standards, it is becoming a big problem for high-strength comprehensive wastewater treatment. It is a very difficult task for the present single treatment technology to meet the requirements. Membrane bioreactor and constructed wetland are two main technologies in the wastewater treatment, and they have significant advantages and shortcomings. In the paper, the pu- rification effects of the combined system with submerged membrane bioreactor（SMBR ） and integrated vertical flow constructed wetland （IVCW） （SMBR-IVCW）on the comprehensive wastewater were studied, and the component of nitrogen in the influent and effluent was also analyzed. The concentrations of chemical oxygen demand （CODc,）, ammonia （NH3）, total phosphorus （TP）and total nitrogen （TN）of the influent during the experimental period were 397-890, 9.40-27.1, 4.30-10.7, 45.9-75.8 mg·L-1, respectively. The results showed： when the hydraulic loading rates of SMBR and IVCW were 1 000 L·d-1 and 375 mm·d-1, the removal rates of CODCr NH3,TN and TP in the system were 97.5%, 99.06%, 59.6% and 65.21%, respectively. The component of nitrogen in the influent and effluent of SMBR-IVCW changed sig- nificantly, ammonia and organic nitrogen/nitrate and organic nitrogen occupied a dominant position, respectively. SMBR-IVCW system prob- ably could be served as a potential treatment technology for high concentrations of comprehensive wastewater.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2009年第2期361-365,共5页
Journal of Agro-Environment Science
基金
国家杰出青年科学基金(39925007)
国家重大科技专项“受污染城市水体修复技术与示范工程”(2002AA60121)
湖北省重大科技攻关项目(2006AA305A03)
