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Study on the Environment Treatment and Protection Planning of Dian Lake

Author: LiYa
Tutor: ZuoShuiYu；ChenXingHua
School: Chongqing University
Course: Architecture and Civil Engineering
Keywords: Dianchi Lake Lake Pollution Control The layout of urban development Control of pollution sources Ecological restoration
CLC: X524
Type: Master's thesis
Year: 2008
Downloads: 527
Quote: 3
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Abstract

Water environmental pollution in Dianchi Lake in Kunming, even in Yunnan Province is currently facing the biggest problem of lake pollution control as a worldwide problem, are ubiquitous in the world within. Several major lakes pollution control work have been carrying out for more than twenty years, has achieved considerable success, but the situation is still grim governance and protection; in developed countries due to the time of its industrialization process than in China morning dozens or even hundreds of years, so lake pollution problems to occur earlier than domestic, after four or five decades or longer governance, has been quite a successful experience. Author access to a large number of lakes governance and protection, personal visits, training lake management and protection of Japan's Lake Biwa, Lake Kasumigaura and Switzerland Lake Zurich fully explored on the lakes governance issues, and experts at home and abroad and exchanges . Thereafter for the Kunming Dianchi pollution control and protection also carry out a lot of the actual work, personal involvement deepened author of lake management and protection. This paper first analyzes of the causes of the pollution of Dianchi Lake, given the various sources of pollution into the lake pollutants specific sharing ratio data, clear the focus of the work of the Dianchi Lake. Subsequently, the inter-annual changes combined in recent years, the situation of eutrophication in Dianchi Lake and Dianchi Lake water quality in the past 20 years were analyzed further to determine the pollution of Dianchi Lake primary pollutant. On this basis, combined with the overall plan for the work of Kunming city, and in-depth study of how the level of planning and timely conduct of governance and protection of Dianchi Lake. The results show that: (1) urban planning as a fundamental basis and means of guidance and control of urban construction and development, the layout of the control and optimization of urban development, is in the planning level to protect Dianchi necessary and forceful measures. Space control, watershed classification protection, industrial layout adjustment, are able to provide better support for the control of pollution sources. (2) because of inadequate urban drainage network system, sewage collection rate is low, the central city rainwater and sewage situation still exists, the sewage treatment rate is difficult to effectively improve city life making pollutants into the lake pollution in Dianchi load the highest proportion, which even in the more than 60% of the pollution load of some pollutants. Such sources of pollution and municipal infrastructure are closely related, through reasonable planning and construction can dramatically reduce the pollution of Dianchi Lake, the planning and control of the focus of this paper. (3) agricultural nonpoint source pollution due to its own coverage, you can not take the characteristics of effective project governance measures, makes its governance in the world can not be properly solved in Dianchi Lake, east, southeast, and southern persists large tracts of farmland, flower garden, fruit trees and vegetable greenhouses. Surface runoff during the rainy season, these fields with a lot of nutrient elements (N, P, K, etc.) to enter into the river of Yunnan, and ultimately discharged into Dianchi Lake has become the second largest source of pollution in Dianchi Lake pollution load. (4) as Kunming urbanization accelerating, the built-up area has grown rapidly, the various types of pollutants carried in surface runoff from urban surfaces of buildings and urban roads, the number increased rapidly, these pollution The matter will be through the storm sewer system, into the river of Yunnan final import Dianchi, urban non-point source pollution has become the third largest source of pollution in Dianchi Lake. Pollutants into the Dianchi Lake before to go through the storm sewer system, therefore also possible to be certain engineering processing. (6) The ecological restoration as the last and most important aspect is essential for the final purification of the Dianchi Lake and its ecological function recovery. Its governance and the protection of the Dianchi Lake as a plateau lakes than other lakes in the world has a higher degree of difficulty, good protection but at the planning level, and gradually improve their aquatic ecological environment must also feasible. Control and optimization of the layout of urban development, according to various sources of pollution into Yunnan pollution load balancing ease of implementation of the rate of the size of its engineering measures, points clear priorities and then to carry out the work with greater operability. To improve watershed drainage infrastructure construction as the core of the pollution control Dianchi Lake and the protection of the most important, and other measures to both control agricultural non-point source urban non-point source, or accelerated Dianchi students fill water transfer project of water diversion or strengthen Dianchi Lake protection supervision and management system, will accelerate the pace of the Dianchi Lake aquatic eco-environment improvement.

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CLC: > Environmental science, safety science > Environmental pollution and its prevention > Water pollution and its control > Lakes and reservoirs
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