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Off the middle Weihe River water pollution and total control of spatiotemporal

Author: WangTaiRan
Tutor: SunGenNian
School: Shaanxi Normal University
Course: Environmental Science
Keywords: Weihe Water Environmental Capacity Water Quality Model Water Pollution Control
CLC: X824
Type: Master's thesis
Year: 2011
Downloads: 92
Quote: 0
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Abstract


With the rapid development of the national economy in Shaanxi Province and rapid population growth, urbanization and along the industrial society's rapid rise, the province is facing severe environmental situation, the Weihe River water pollution problems have become increasingly prominent. Nearly 30 years Weihe water shortage, water supply and demand contradiction; industrial wastewater and urban sewage discharged into a large number, so the Weihe River water is polluted to varying degrees, affect the coastal people's living environment, has become a constraint to economic development in Shaanxi One of the main factors. Based on the evaluation of the Weihe River Pollution Survey, based on the study of temporal and spatial variation Weihe River water pollution process, analyze and river runoff relationship between the environmental capacity is based on the Weihe River water pollution control district timeshare, to achieve full river Overall compliance of pollution control to provide a reference. Thesis main contents are as follows: First, the Weihe River water pollution monitoring status and statistical data analysis and evaluation indicate that the \2002 for 5 years pollution peak, followed by a declining trend. Weihe River water pollution pollution models still have the basic characteristics of river pollution factors of permanganate index, ammonia, BOD and so on. Weihe River water pollution significantly affected by the temporal and spatial variation, and the close relationship with the river runoff. Second, the river water environmental capacity calculation and results analysis through simulation of water quality model parameters related to organic matter degradation, water environmental capacity E calculated by simulation results show that the Weihe ammonia, COD are outside the permitted quantity of pollutants. Mainly due to sewage polluting industry standard low pollution load, combined with urban sewage treatment rate is low; Northwest shortage of water resources, river water during the inter-annual changes, lack of adequate ecological river water; city near the river, in addition to sewage disposal, water less, the lack of a wide and comprehensive solid waste and garbage collection and disposal system. Third, the Weihe River Basin water pollution control policy approaches Weihe river water environmental capacity based on the calculation results, and then propose watershed pollution control policy approaches. Such as establishing clear water rights system, strengthen water pollution control management system construction; clear the main sewage treatment, sewage charges levied to strengthen financial management and environmental protection; formulate its discharge permit trading system, strengthen emission permits total control; accelerate public participation process, to achieve universal pollution and so on.

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CLC: > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Analysis and Evaluation of Environmental Quality > Water Quality Assessment
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