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Based on the high turbidity of stone processing wastewater, we introduced a new way of wastewater treatment. First, compound of a new composite flocculants (FA-PAC) was made by from Fulvic Acid and PAC; then, an orthogonal experiment was designed and conducted to get ready for the factors influence the flocculation and optimal flocculation conditions; and then combined the optimal conditions for the...
It is hard to solve the problem well of large-scale water resource system of multi-water resources and multi-users with traditional planning method. The Multi-Objective Genetic Algorithms (MOGA) on a rank-based fitness is put forward in this paper according to inherent parallel mechanism and overall optimization characters of Genetic Algorithms. We model the problem of optimal allocation of water...
According to the one-dimensional and two-dimensional water quality model, establish the model of water environmental capacity. Based on the comprehensive analysis of the Taizi River's water quality conditions, pollution sources and the characteristics of pollutants, selected one-dimensional model to calculate the water environmental capacity of the Taizi River. Basis of the river function zoning case,...
It is a multi-objective, multi-criteria, multi-level and high-dimensional comprehensive issue to assess groundwater resources and environment carrying capacity affected many factors. Projection pursuit (PP) technology was adopted to reduce dimension of the above non-linear and high-dimensional problem. Particle swarm optimization (PSO) algorithm was introduced to optimize projection index function,...
Since the large-scale hydropower plant must undertake the spinning reserve of power system, a small amount of out-flow water does not generate electricity. In order to increase water use efficiency, it is necessary to calculate the spillage owing to improper dispatch. Therefore, the optimal operation of hydroelectric systems should be obligated with the undertaking spinning reserve. A calculation...
Geographic information system (GIS) has gotten extensive application in water resource management, except in water resource allocation. By analyze the research content, principle and method of water resource allocation, the data management and analysis function of GIS is helpful to build water resource allocation decision support system. As the water resource allocation of Hebei province configure...
Six common disinfectants were studied for their effects in water on Tubifex species, Monopylephorus limosus, frequently found in tap water in many places of China recently. These disinfectants include sodium hypochlorite, liquid chlorine, chloramines, chlorine dioxide, hydrogen peroxide, and potassium permanganate composite. It was found that 100% mortality rate could be achieved within two hours...
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