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首页> 外文期刊>The Science of the Total Environment >Treatment of rural domestic wastewater using multi-soil-layering systems: Performance evaluation, factorial analysis and numerical modeling
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Treatment of rural domestic wastewater using multi-soil-layering systems: Performance evaluation, factorial analysis and numerical modeling

机译：使用多土壤分层系统处理农村生活污水的性能评估，因子分析和数值模拟

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摘要

The discharge of wastewater in rural areas without effective treatment may result in contamination of surrounding surface water and groundwater resources. This study explored the wastewater treatment performance of multi-soil-layering (MSL) systems through interactive factorial analysis. MSL systems showed good performances under various operating conditions. The COD and BOD5 removal rates in MSL systems could reach 98.53 and 93.66%, respectively. The performances of MSL systems in TP removal stayed at high levels ranged from 97.97 to 100% throughout the experiments. The NH4+ - N removal rates of the well performed MSL systems reached highest levels ranging from 89.96 to 100%. The TN removal rates of aerated MSL systems ranged from 51.11 to 64.44% after 72 days of operation. The independent effects of bottom submersion, microbial amendment and aeration, as well as most interactions were significant. The performance of MSL systems was mainly affected by bottom submersion and aeration as well as their interactions. Aeration was the most positive factor for the removal of organic matter, TP and NH4+ - N. However, oxygenated environment was unfavorable for NO3- - N removal. In the submerged area with limited oxygen, the microbial transformation of NO3- - N still occurred. A stepwise-cluster inference model was developed for tackling the multivariate nonlinear relationships in contaminant removal processes. The results can help obtain a better understanding of the complicated processes among contaminant removal in MSL systems. (C) 2018 Elsevier B.V. All rights reserved.
机译：农村地区未经有效处理的废水排放可能会污染周围的地表水和地下水资源。本研究通过交互式因子分析探索了多层土壤层（MSL）系统的废水处理性能。 MSL系统在各种操作条件下均表现出良好的性能。 MSL系统中的COD和BOD5去除率分别可以达到98.53和93.66％。在整个实验中，MSL系统在TP去除方面的性能始终保持在97.97％至100％的高水平。运行良好的MSL系统的NH4 +-N去除率达到最高水平，范围从89.96到100％。运转72天后，充气MSL系统的总氮去除率介于51.11％至64.44％之间。底部浸没，微生物修正和通气以及大多数相互作用的独立作用是显着的。 MSL系统的性能主要受底部浸没和通气及其相互作用的影响。曝气是去除有机物，TP和NH4 +-N的最积极因素。但是，氧化环境不利于去除NO3--N。在氧气不足的淹没区域，仍然发生了NO3--N的微生物转化。建立了逐步聚类推理模型，以解决污染物去除过程中的多元非线性关系。结果可以帮助您更好地了解MSL系统中污染物去除中的复杂过程。 （C）2018 Elsevier B.V.保留所有权利。

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  • 来源
    《The Science of the Total Environment》 |2018年第10期|536-546|共11页
  • 作者

    Song Pei; Huang Guohe; An Chunjiang; Shen Ju; Zhang Peng; Chen Xiujuan; Shen Jian; Yao Yao; Zheng Rubing; Sun Chaoxing;

  • 作者单位

    North China Elect Power Univ, MOE Key Lab Resourcces & Environm Syst Optimizat, Beijing 102206, Peoples R China;

    North China Elect Power Univ, MOE Key Lab Resourcces & Environm Syst Optimizat, Beijing 102206, Peoples R China;

    Concordia Univ, Dept Bldg Civil & Environm Engn, Montreal, PQ H3G 1M8, Canada;

    North China Elect Power Univ, MOE Key Lab Resourcces & Environm Syst Optimizat, Beijing 102206, Peoples R China;

    Univ Regina, Inst Energy Environm & Sustainable Communities, Regina, SK S4S 0A2, Canada;

    Univ Regina, Inst Energy Environm & Sustainable Communities, Regina, SK S4S 0A2, Canada;

    Univ Regina, Inst Energy Environm & Sustainable Communities, Regina, SK S4S 0A2, Canada;

    Univ Regina, Inst Energy Environm & Sustainable Communities, Regina, SK S4S 0A2, Canada;

    North China Elect Power Univ, MOE Key Lab Resourcces & Environm Syst Optimizat, Beijing 102206, Peoples R China;

    North China Elect Power Univ, MOE Key Lab Resourcces & Environm Syst Optimizat, Beijing 102206, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Rural wastewater; Multi-soil-layering system; Operating factors; Interactive factorial analysis; Stepwise-cluster inference;

    机译：农村污水;多土壤分层系统;运行因素;交互式因子分析;逐步聚类推理;

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