Application of the Fuzzy Model Based on the Combined Weight in the Evaluation of the Regional Underground Water Quality

To avoid the fuzziness and the subjective factors when evaluatingthe water quality and calculating weights,based on optimized fuzzy synthetic evaluation model,we use analytic hierarchy process(AHP)to calculate the subjective evaluation model and use RAGA Projection Pursuit Method to calculate objective weights.Then the ascertaining weight is calculated according to the subjective and objective weights.This model is applied to evaluate the underground water quality of 853Farm of land reclamation Hongxinglong administration,Heilongjiang Province.The result shows that the water quality of the first branch,third branch,sixth branch is up to drinking water standard,but the others aren,t up to the standard due to Fe and Mn.Compared with the traditional Nemerow Index Method and Fuzzy Evaluation model based on entropy weight,we can draw the conclusion that the evaluated results accord with the fact of the quality of local underground water well.In addition,the new model is reasonable and the evaluation results are feasible Moreover,the new model provides a new method of evaluating the quality of regional water.