改进型波形潜流人工湿地处理猪场废水  

Swine wastewater treatment with improved wavy-subsurface-flow-constructed-wetland

作　　者：王妍艳[1] 张彩莹[1,2] 安可栋[1] 卢阿虔[1] 王岩[1] 

机构地区：[1]郑州大学化工与能源学院,郑州450001 [2]南阳师范学院生命科学与技术学院,南阳473061

出　　处：《环境工程学报》2012年第9期2947-2952,共6页Chinese Journal of Environmental Engineering

基　　金：国家"水体污染控制与治理"科技重大专项(2009ZX07010-004)

摘　　要：提出了一种改进型波形潜流人工湿地(improved wavy subsurface flow constructed wetland,IW-SFCW)并研究了该湿地系统在5个水力停留时间(hydraulic retention time,HRT)(2、3、4、6和8 d)下对猪场废水的处理效果。结果表明,该湿地系统对猪场废水中各污染物有较好的去除效果。在水力停留时间为4 d,进水COD、TN、NH4+-N和TP浓度分别为511、120、110和10 mg/L左右时,该湿地系统对COD、TN、NH4+-N和TP的去除率分别为86.0%、54.4%、70.1%和91.6%。此外,该湿地系统对废水中COD、TP的去除效率随水力停留时间的延长逐渐提高,在HRT=8 d时去除效果最好,去除率分别达到92.7%和96.8%;但对TN、NH4+-N的去除率却随水力停留时间的延长出现先上升后下降的趋势,在HRT=4 d时去除率最高,分别为54.4%和70.1%。An improved wavy subsurface flow constructed wetland（IW-SFCW） was proposed.The effect of this wetland system on the treatment of swine wastewater in five hydraulic retention time（HRT） was studied.The results showed that： COD,TP,TN and NH＋4-N of swine wastewater can be removed well with this system.In the HRT 4 d,influent COD,TN,NH4 ＋-N,TP concentrations were 511 mg/L,120 mg/L,110 mg/L,10 mg/L or so,the removal efficiencies of COD,NH＋4-N,TN and TP were 86.0%,54.4%,70.1% and 91.6%,respectively.Besides,the removal efficiency of COD and TP improved gradually with the HRT extension.In the best adapt HRT 8 d,the removal efficiencies of COD and TP reached 92.7% and 96.8%,respectively.But the removal efficiency of TN and NH＋4-N increased firstly and then decreased with the HRT extension.In the best adapt HRT 4 d,the removal efficiencies of TN and NH＋4-N in the wetland system were 54.4% and 70.1%,respectively.

关 键 词：改进型波形潜流人工湿地 猪场废水 污染物去除 水力停留时间 

分 类 号：X703.1[环境科学与工程—环境工程]