The Comparison of Different Calculation Methods of Pollution Receiving Capacity for Jilin Province Huifa River

摘要

Huifa River is the largest tributary of the Second Songhua River. Songhua River Basin is the concentratedarea of Northeast Old Industrial Base, and it is also the distribution area of major cities, bearingproduction task of national commodity grain. In recent years, with the rapid development of economy,the deterioration of water quality is serious and the water environment problem is becoming more andmore outstanding, which have affected the sustainable development of the economic and social ofJilin province, so it is necessary to analyse and study the pollution receiving capacity of the river andcontrol the water pollution source to protect the water environment and strengthen water resourcesprotection. Based on one-dimensional water quality model, this paper use three kinds of differentgeneralization methods, such as midpoint generalization, uniform generalization and sewage outfallbarycenter generalization, to calculate pollution receiving capacity of the five sections of Huifa River,discussing the pollution receiving capacity of water function area based on different situations ofsewage outfall generalization. The results show that: Annual pollution receiving capacity of COD andammonia nitrogen of Huifa River are 34027.02 t/a and 2242.07 t/a respectively in the case of sewageoutfall midpoint generalization; Annual pollution receiving capacity of COD and ammonia nitrogen ofHuifa River are 33714.86t/a and 2222.49t/a respectively in the case of sewage outfall uniformgeneralization; Annual pollution receiving capacity of COD and ammonia nitrogen of Huifa River are41701.09t/a and 2727.90t/a respectively in the case of sewage outfall barycenter generalization. Thecalculation results of pollution receiving capacity with midpoint generalization and uniform generalizationare approximate, while the calculation result of sewage outfall barycenter generalization has somedifferences with the first two.