Dongchang Lake Environment Capacity Of Research

DongChangHu according to the water environment and the characteristics of hydrology, and monitoring data sampling, laboratory data, on the basis of the analysis of fuzzy pattern recognition method and the eutrophication of comprehensive pointrating method and the status quo of water lake eutrophication level is analyzed. Determine the current level of water DongChangHu water eutrophication forâ…£class, for 80, the water is index of medium eutrophication status. The water environmental quality worsen, and the sources of the investigation, the results show that the main pollution source in the nearby lake for human waste pollution, mainly for the water pollution in surface runoff.This paper states the environmental protection agency (USEPA) development of the design of water simulation software, the water DongChangHu WASP status, after a lot of simulated test data, the main pollutant indexes simulation and measured average relative error control in the permissible scope, and simulated and measured value is basically the same concentration change trend, the model is applied to DongChangHu is feasible and effective.This paper capacity calculation method, at a minimum, function and the optimal three different water conditions, the science of DongChangHu water ecological environment of static estimation water. The estimation results in the smallest, medium for water and optimal conditions, the total amount 1746.4 million m3, respectively 2334.7 million m3 and 2922.9 million m3.The water in the lake, on the basis of the forecast, application Vollenweider) model (warren rightek Dillion) model, Dillon (mainly TianJian niv model of nutrient TN and TP separately carried on the environmental capacity of Vollenweider estimation, the minimum value estimation model environmental capacity, estimating maximum value TianJian model. The estimation results, Vollenweider model for water quality indexes, such as classâ…¢,â…£, andâ…¤type conditions, TN and TP capacity calculation 12.6respectively, t/a,18.9t/a 25.2t/a 0.63t/a, and 1.26t/a,2.258t/a Dillion capacity calculation model respectively 26.355 t/a,39.533t/a,52.71t/a and 1.6t/a,3.2t/a,6.4t/a. And TianJian model respectively capacity calculation 45.15t/a,67.725t/a, reviewed 90.3 2.258t/a, and 4.515t/a,9.03 t/a Another choice Dillion model of three different water under the condition of the estimated value.According to the present situation of water pollution, and the optimal estimation of water and environmental capacity, is proposed to improve the quality of water environment, some countermeasures.