我国东北地区城市污水处理效率研究

Efficiency of wastewater treatment in northeast cities of China

摘要:

为更有效地分析我国东北地区城市污水处理效率,采用相关分析确定污水处理效率的各种影响因素,通过二阶二级逼近形式的污水投资和运行费用函数对实际数据进行拟合,在此基础上应用所建立的费用函数结合城市污水处理相关指标进行污水处理效率分析.结果表明,我国东北地区城市污水处理效率分析应重点考察设计处理能力、实际处理能力、出水COD质量浓度和污泥处理量等指标,这些指标值的改变将引起投资和运行费用的相应变化,并且边际费用呈现递减规律,随着费用的增加,我国东北地区城市污水处理效率是递增的.

Abstract:

In order to analyze the urban wastewater treatment efficiency in northeast China more effectively,this paper uses correlation analysis to determine the efficiency of various relevant factors,combined with second-order quadratic approximation of the investment and operation cost function to fit the actual data,based on which the efficiency of wastewater treatment is analyzed with corresponding indexes.The result shows that the analysis of urban wastewater treatment efficiency in northeast China should be concentrated on designed capacity,actual processing capacity,effluent COD concentration and sludge treatment volume.All the indices above have a positive relation with investment and operation cost,and the margin cost shows a decreasing trend,which means that the efficiency of urban wastewater treatment in northeast China is improved with increasing cost.