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首页> 外文期刊>Water and Environment Journal >Nutrient removal in a trapezoidal vegetated drainage ditch used to treat primary domestic sewage in a small catchment of the upper Yangtze River
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Nutrient removal in a trapezoidal vegetated drainage ditch used to treat primary domestic sewage in a small catchment of the upper Yangtze River

机译：梯形植被排水沟中的养分去除，用于处理长江上游小流域的主要生活污水

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摘要

A trapezoidal constructed ditch (TCD) of 300 m length and 2.2 m width was designed and built in the downstream section of the upper Yangtze River for in situ treatment of primary domestic sewage. The removal efficiencies of TN, NH4-N,NO3-N, TP and PO4-P from the TCD were approximately 61, 63, 48, 58 and 51%, respectively. The concentrations of TN, NH4-N, NO3-N, TP and PO4-P showed a decreasing trend with increasing distance downstream. Plant assimilation and sediment retention were the key mechanisms for N and P removal within the TCD, with subsequent microbial uptake and transformation of the nutrients. The TCD outlet showed significantly higher dissolved oxygen (DO) concentrations and lower values of electrical conductivity and total dissolved solids compared to the influent. Results of this study highlight the potential of TCD to mitigate nutrients from primary domestic sewage transported downstream and could be incorporated into local best management practices.
机译：在长江上游下游设计并建造了一条长300 m，宽2.2 m的梯形建筑沟（TCD），用于现场处理生活污水。从TCD去除TN，NH4-N，NO3-N，TP和PO4-P的效率分别约为61％，63％，48％，58％和51％。 TN，NH4-N，NO3-N，TP和PO4-P的浓度随着下游距离的增加而降低。植物同化和沉积物保留是TCD中去除氮和磷以及随后的微生物吸收和养分转化的关键机制。与进水相比，TCD出口显示出明显更高的溶解氧（DO）浓度以及更低的电导率和总溶解固体值。这项研究的结果凸显了TCD缓解下游主要生活污水中养分的潜力，可以纳入当地最佳管理实践。

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  • 来源
    《Water and Environment Journal》 |2017年第1期|72-79|共8页
  • 作者

    Kumwimba Mathieu Nsenga; Dzakpasu Mawuli; Zhu Bo; Wang Tao; Ilunga Lunda; Muyembe Diana Kavidia;

  • 作者单位

    Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China|Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China|Univ Lubumbashi, Dept Nat Resources & Environm Management, Fac Agron, POB 1825, Lubumbashi, DEM REP CONGO;

    Univ Coll Dublin, UCD Dooge Ctr Water Resources Res, Sch Civil Engn, Newstead Bldg, Dublin 4, Ireland;

    Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China|Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China;

    Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China|Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China;

    Univ Lubumbashi, Dept Nat Resources & Environm Management, Fac Agron, POB 1825, Lubumbashi, DEM REP CONGO;

    Southwest Jiaotong Univ, Sch Life Sci & Engn, Chengdu 610031, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    aboveground biomass; application; domestic untreated sewage; nutrient uptake; trapezoidal constructed ditch;

    机译：地上生物量;应用;未经处理的生活污水;养分吸收;梯形人工沟;

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