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首页> 外文期刊>Environmental Management >Population Growth and Its Impact on the Design Capacity and Performance of the Wastewater Treatment Plants in Sedibeng and Soshanguve, South Africa
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Population Growth and Its Impact on the Design Capacity and Performance of the Wastewater Treatment Plants in Sedibeng and Soshanguve, South Africa

机译：南非Sedibeng和Soshanguve的人口增长及其对污水处理厂设计能力和性能的影响

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摘要

This study investigated the effects of population growth on the performance of the targeted wastewater treatment plants in Sedibeng District and Soshanguve peri-urban area, South Africa. The impact of population growth was assessed in terms of plant design, operational capacity (flow rate) and other treatment process constraints. Between 2001 and 2007, the number of households connected to the public sewerage service increased by 15.5, 17.2 and 37.8 % in Emfuleni, Lesedi and Midvaal Local Municipalities, respectively. Soshanguve revealed a 50 % increment in the number of households connected to the sewerage system between 1996 and 2001. Except for Sandspruit (-393.8 %), the rate of influent flows received by Meyerton increased by 6.8 ML/day (67.8 %) and 4.7 ML/day (46.8 %) during the dry and wet seasons, respectively. The flow rate appeared to increase during the wet season by 6.8 ML/day (19.1 %) in Leeuwkuil and during the dry season by 0.8 ML/day (3.9 %) in Rietgat. Underperformance of the existing wastewater treatment plants suggests that the rapid population growth in urban and peri-urban areas (hydraulic overloading of the wastewater treatment plants) and operational constraints (overflow rate, retention time, oxygen supply capacity of the plants and chlorine contact time) resulted in the production of poor quality effluents in both selected areas. This investigation showed that the inefficiency of Meyer-ton Wastewater Treatment Plant was attributed to the population growth (higher volumes of wastewater generated) and operational constraints, while the cause of underperformance in the other three treatment plants was clearly technical (operational).
机译：这项研究调查了人口增长对南非Sedibeng区和Soshanguve郊区地区目标污水处理厂的性能的影响。人口增长的影响是根据工厂设计，运营能力（流量）和其他处理工艺限制进行评估的。在2001年至2007年之间，Emfuleni，莱塞迪和米德瓦勒地方市政当局的公共污水处理服务家庭数量分别增长了15.5％，17.2和37.8％。 Soshanguve透露，在1996年至2001年之间，与污水处理系统相连的家庭数量增加了50％。除Sandspruit（-393.8％）外，Meyerton收到的进水流量每天增加6.8 ML（67.8％）和4.7 ML。旱季和雨季分别为ML /天（46.8％）。 Leeuwkuil的雨季流速似乎增加了6.8 ML /天（19.1％），Rietgat的旱季流速增加了0.8 ML /天（3.9％）。现有废水处理厂的性能欠佳表明，城市和郊区的人口快速增长（废水处理厂的水力超载）和运营限制（溢流率，保留时间，工厂的氧气供应能力和氯接触时间）导致两个选定地区的废水质量不佳。这项调查表明，Meyer-ton废水处理厂的效率低下归因于人口增长（产生的废水量更高）和操作方面的限制，而其他三个处理厂性能不佳的原因显然是技术上的（操作上）。

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  • 来源
    《Environmental Management》 |2015年第4期|984-997|共14页
  • 作者

    Giorgis Z. Teklehaimanot; I. Kamika; M. A. A. Coetzee; M. N. B. Momba;

  • 作者单位

    Department of Environmental, Water and Earth Sciences, Water Care Unit, TUT, Private Bag X680, 175 Nelson Mandela Drive, Arcadia Campus, Pretoria 0001, South Africa;

    Department of Environmental, Water and Earth Sciences, Water Care Unit, TUT, Private Bag X680, 175 Nelson Mandela Drive, Arcadia Campus, Pretoria 0001, South Africa;

    Department of Environmental, Water and Earth Sciences, Water Care Unit, TUT, Private Bag X680, 175 Nelson Mandela Drive, Arcadia Campus, Pretoria 0001, South Africa;

    Department of Environmental, Water and Earth Sciences, Water Care Unit, TUT, Private Bag X680, 175 Nelson Mandela Drive, Arcadia Campus, Pretoria 0001, South Africa;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Population growth; Wastewater treatment; Water pollution; Nitrification;

    机译：人口增长;废水处理;水污染;硝化作用;

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