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我国城镇污水处理厂运行效率评价

买亚宗 肖婉婷 石 磊 马 中

买亚宗, 肖婉婷, 石 磊, 马 中. 我国城镇污水处理厂运行效率评价[J]. 环境科学研究, 2015, 28(11): 1789-1796.
引用本文: 买亚宗, 肖婉婷, 石 磊, 马 中. 我国城镇污水处理厂运行效率评价[J]. 环境科学研究, 2015, 28(11): 1789-1796.
MAI Yazong, XIAO Wanting, SHI Lei, MA Zhong. Evaluation of Operating Efficiencies of Municipal Wastewater Treatment Plants in China[J]. Research of Environmental Sciences, 2015, 28(11): 1789-1796.
Citation: MAI Yazong, XIAO Wanting, SHI Lei, MA Zhong. Evaluation of Operating Efficiencies of Municipal Wastewater Treatment Plants in China[J]. Research of Environmental Sciences, 2015, 28(11): 1789-1796.

我国城镇污水处理厂运行效率评价

基金项目: 国家水体污染控制与治理科技重大专项(2008ZX07633-02);国家社会科学基金青年项目(12CGL069);中国人民大学科学研究基金项目(15XNH043)

Evaluation of Operating Efficiencies of Municipal Wastewater Treatment Plants in China

  • 摘要: 污水处理厂运行效率的定量评价是当前污水处理行业管理需要解决的问题,效率研究将有助于政府制订合理政策以促进污水处理厂的发展. 基于全要素生产框架,采用DEA(数据包络分析)方法构建了污水处理厂运行效率评价模型,以固定资产总额、年运行费用、污水处理人员数和年耗电量为投入变量,以污水年处理量、BOD5和氨氮削减量为产出变量,对2013年我国74座排放标准为一级A且处理工艺相同的城镇污水处理厂作为样本进行效率评价,基于评价结果,对运行效率和污水厂处理规模之间的关系进行检验,并对样本的投入冗余和产出不足情况进行定量分析. 结果显示:有20个样本的运行效率达到相对最优,可以成为其余效率不足样本今后改进的标杆;有10个样本纯技术效率有效但规模效率无效,需要改进其规模;85.2%的DEA无效样本规模报酬为递增状态,表明我国污水处理行业整体上处于规模收益递增的发展阶段;通过KW(Kruskal-Wallis)检验发现,样本污水处理厂具有规模效应,规模越大的运行效率越高;54个DEA无效样本存在不同程度的投入冗余和产出不足,冗余率或不足率较高的样本是今后进行效率改进的重点对象.

     

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出版历程
  • 收稿日期:  2015-02-12
  • 修回日期:  2015-05-25
  • 刊出日期:  2015-11-25

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