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Total amount of pollutants into the sea and method of distribution technology

Author: NongJia
Tutor: WangJinKeng
School: Third Institute of Oceanography of State Oceanic Administration
Course: Environmental Science
Keywords: Pollutants into the sea Total allocation Linear Programming Environmental Gini coefficient Luoyuanwan
CLC: X321
Type: Master's thesis
Year: 2011
Downloads: 116
Quote: 0
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Abstract

At present, China coastal waters from north to south in varying degrees of pollution and destruction. A large number of urban industrial wastewater, sewage and other emissions, making the coastal waters of deteriorating water quality and eutrophication in a certain level, the increasing frequency of occurrence of red tide, has seriously hampered the marine economy and environmental sustainability. Therefore, the total amount of pollutants into the sea to strengthen control theory and technical methods of research, develop scientific, practical, workable total amount of pollutants into the sea distribution technology, protection of the marine environment and management have great significance. This paper summarized the total domestic distribution technique based on the latest research in order to optimize the allocation of marine pollutant load as the core, proposed capacity of the marine environment based on total amount of pollutants into the sea and distribution technology for the demonstration of Fujian Luoyuanwan waters, to carry out empirical research. The main conclusions are as follows: (a) the total amount of pollutants into the sea into the sea allocation techniques for marine pollution caused by pollutants, by summing up the total allocation of domestic and foreign advanced technologies to optimize the allocation of marine pollutant load as the core, proposed based on the marine environment The total amount of pollutants into the sea capacity allocation techniques, including marine environmental capacity estimates, the total amount allocated distribution technology selection and program evaluation. First, through numerical model to simulate hydrology and water quality and pollutant attenuation and dilution conditions, calculation capacity marine environment, and the use of linear optimization method to get the waters to allow dirt holding capacity; Then according to the management, research needs to develop co-ordinated by the total allocation of land and sea routes, according to the information richness of the budget situation and the amount allocated to select the appropriate technology; Finally Gini coefficient method to evaluate allocation scheme to determine the optimal solution. (2) waters into the sea Luoyuanwan Total Pollutant Load Allocation empirical research to establish marine environmental capacity constraints Luoyuanwan total control of pollutants into the sea allocation model. Using the Danish Institute of Hydrodynamics (DHI) developed three-dimensional moving boundary trend MIKE3 field model was constructed Luoyuanwan dimensional hydrodynamic model, simulation and establish pollution load and marine water quality response relationship; in determining the distribution of hydrological conditions and principles of design Next to water quality management objectives are constraints to maximize pollutant load as the objective function, the use of linear programming method to establish the marine environment Luoyuanwan capacity calculation method. Considering the natural resources, social environment, economic development and other factors, selected environmental capacity, water resources, population, agricultural area and the total GDP and other five distributional impact factor, using entropy method to calculate the weight coefficient and the total amount allocated for pollution eventually get 12 involved haizi basin COD, TN, TP allocation scheme. Group also invited two experts, consulting scoring through questionnaires to five kinds of factor weights assigned readjust, and then get the final AHP weight of each index, the final distribution plan to get the other two groups. Cited Ru Jini coefficient method into the sea in total pollutant distribution effectiveness and rationality of analysis and evaluation, screening out the optimal solution. In considering the watershed's natural, demographic and socio-economic factors, based on the selected sample of population, GDP two environmental Gini coefficient index allocation scheme to build 12 catchments in the allocation of the amount of each pollutant with these two indicators Lorenz curves are obtained for each of the environmental program Gini coefficient. Respectively as the basis for the three kinds of 12 sub-basin allocation scheme fairness and efficiency analysis and evaluation, both fair and efficient screening optimal allocation scheme for program 1, that the distribution of the amount of COD 36003.92t, TN's allocation of 1199.41t, TP allocation amount is 107.37t. Summary optimal solution (Scheme 1) and the total amount of mariculture get the total allocation of the waters of the sea. The 12 sub-basin terrigenous optimal solution (Scheme 1) according to administrative region attribution summary available Luoyuan Lianjiang and distribution of the total amount of the allocation of the amount of COD Lienchiang 15065.23t, TN allocation amount 508.36t, TP's allocation of 46.91t; Luoyuan allocation amount of COD 20938.69t, TN allocation amount of 691.03t, TP allocation amount is 60.47t. On this basis, an administrative area of ??the township area of ??Xia Zhu basis, using the proportional allocation method, the total amount allocated for sea-related areas that will allow the allocation of the total allocated to the township.

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