Evaluation Method of WWTPs'Treatment Effectiveness Based on Mathematical Statistics and Numerical Analysis
Wastewater treatment plants(WWTPs)undertake the major task of sewage treatment.So it is of great practical significance to evaluate their treatment effect objectively and scientifically.On the basis of comparison method and guarantee rate method,the evaluation method of WWTPs'treatment effect based on mathematical statistics and numerical analysis was proposed.First,mathematic expectation,confidence interval(α=0.1)and coefficient of variation were applied to characterize the average level,major range of change and stability to reach the designed standard respectively in this method.Second,the method adopted normal distribution to describe the general information.Third,the method adopted normal curve to fit the frequency distribution and obtain probability density function.Finally,the development trend was quantitatively predicted based on the solution of the probability density function in this method.The practical operation of this method was demonstrated in combination with cases.Results indicated that the new method could be used for the parallel analysis between multi objective WWTPs and multi assessment indices.Besides,the application of this method in the optimization of scheduling and design,risk analysis of excessive effluent quality in WWTPs was demonstrated.
wastewater treatment plant(WWTP)treatment effectiveness evaluationmathematical statisticsnumerical analysismethod research
万方数据
维普
