水培-复合人工湿地去除直链烷基苯磺酸盐中试研究  

A Pilot Study on LAS Removal in Hydroponic Cultivation and Hybrid Constructed Wetlands

作　　者：马刚[1] 任勇翔[1] 鲁浩[1] 孙军峰[1] 

机构地区：[1]西安建筑科技大学西北水资源与环境生态教育部重点实验室,陕西西安710055

出　　处：《环境科学与技术》2014年第2期119-122,128,共5页Environmental Science & Technology

基　　金：国家水体污染控制与治理科技重大专项河流主题:渭河关中段分散型污水处理;再生利用技术的集成;研究与示范(2009ZX07212-002-004-003);西安建筑科技大学人才科技基金(RC0736)

摘　　要：以城市污水处理厂初沉池出水为原水,研究了以黑麦草为栽培植物的水培-复合人工湿地对污水中直链烷基苯磺酸盐(LAS)的去除效果。结果显示深度分别为0.1、0.3和0.6 m的3个水培-复合人工湿地系列均可高效去除城市生活污水中的LAS,其中水培槽的中位数去除率分别为49.36%、32.98%和34.04%,水平潜流湿地的中位数去除率分别为46.73%、42.55%和49.32%,垂直流湿地的中位数去除率分别为97.57%、96.26%和96.99%。0.1 m水培槽对LAS的去除效果明显优于0.3 m(p=0.010<0.05)和0.6 m(p=0.021<0.05)水培槽,0.1、0.3和0.6 m水平流(p=0.301>0.05,p=0.791>0.05)和垂直流(p=0.244>0.05,p=0.347>0.05)湿地对LAS的去除无显著差异,但垂直流湿地对LAS的去除显著优于水平流湿地(p=0.000<0.05)。LAS的去除与COD的降解显著相关,与TN和TP的降解无显著相关性。With effluent from primary sedimentation tank of a municipal wastewater treatment plant as raw water, removal effect of linear alkylbenzene sulfonate （LAS） by hydrophonic cultivation of Lolium perenne L. and hybrid constructed wetlands composed of a hydroponic channel （HC） and a horizontal flow （HF） as well as a vertical flow constructed wetland （VFCW） was studied in a pilot scale. Results showed that LAS was effectively removed in the depths of three series respectively 0.1 m, 0.3 m and 0.6 m. The median removal efficiencies were respective 49.36~/0, 32.98% and 34.04% in HCs, 46.73%, 42.55% and 49.32% in HFCWs, and 97.57%, 96.26% and 96,99% in VFCWs. The differences between 0.1 m and 0.3 m HC （p=0.010〈0.05）, 0.1 m and 0.6 m （p=0.021〈0.05） HC were statistically significant, the differences between the CWs in different depths were not statistically significant. However, LAS was removed significantly in all VFCWs compared to that in HFCWs with the same depth （p=0.000〈0.05）. The removal effect of LAS was significantly positively correlated with COD removal, while insignificant correlated with the removal of TN and TP.

关 键 词：直链烷基苯磺酸盐 水培 人工湿地 去除率 相关性 

分 类 号：X703.1[环境科学与工程—环境工程]