Water Quality Assessment Of River Basin To Jiashan Based On BP Neural Network And Principal Component Analysis

With the rapid social and economic development, pursuit of the maximum profits greatly impact our surrounding environment at the same time. And water environment quality depends heavily on water quality,thus affecting the whole environment of the strengths and weaknesses. With the great challenges in using theoretical evaluation of regional water quality assessment to identify the main factors that affecting water quality, taking effective measures and recommendations to solve problems, providing a theoretical basis for improving the water environment and then strong protection for the social and economic sustainable development.Jiashan is located in Hangjiahu region with advanced economically. But with the rapid development of Jiashan economic, human and environmental issues become more prominent, especially water quality of environmental issues becomes one of the bottlenecks in restricting in its economic development.On the basis of this background, and according to the basis of previous research,this article spreads out its research on water quality of river basin to Jiashan.Water quality assessment and related theoretical foundation, water quality evaluation and principal component analysis methods by using of BP neural network, ranking the results of water quality Evaluation from the Time and space levels and demonstrating the feasibility of two methods are explored systematically. The results show that 77.8% of the evaluation samples in the two methods are consistent in the ranking, the results of both methods are scientific and rational.The overall water quality of river basin to Jiashan is poor,which concentrate in III, IV and V class in the scope of Water quality. Ammonia nitrogen, total phosphorus, total nitrogen, BOD5 are the main Indicators to influent the first component of water quality,and the second principal components of the main indicators is oil. Basing on the water quality of river basin to Jiasha, put forward Control and Guarantee measures to promote environmental sustainable development in Jiashan.