A method for obtaining key parameters of river multi-level dam system

A technology of key parameters and acquisition methods, applied in general water supply conservation, electrical digital data processing, special data processing applications, etc., can solve problems such as water pollution, achieve the effects of ensuring continuity, promoting settlement, and improving water quality

Active Publication Date: 2022-07-22
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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Problems solved by technology

Therefore, the nutrients (pollutants) in the watershed are still transported to the downstream water body in large quantities and quickly, causing serious water pollution

Method used

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  • A method for obtaining key parameters of river multi-level dam system
  • A method for obtaining key parameters of river multi-level dam system
  • A method for obtaining key parameters of river multi-level dam system

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Embodiment 1

[0044] figure 1 For the flow chart of the method for obtaining the key parameters of the river multi-level dam system according to the present invention, the following will refer to figure 1 , the method for obtaining key parameters of the river multi-level dam system of the present invention is described in detail.

[0045] First, in step 101, a biogeochemical budget model and a pollutant output coefficient model of the pollutants in the watershed are constructed.

[0046]In the embodiment of the present invention, the source small watershed of the drinking water source is selected as the research area, and an independent non-point source pollution model is constructed, including the biogeochemical budget model and the pollutant output coefficient model of the watershed pollutants. Nitrogen and phosphorus budgets in small watersheds include input sources of nitrogen and phosphorus in the watershed (including fertilizer input, atmospheric deposition, nitrogen fixation by crop...

Embodiment 2

[0062] The present invention conducts a two-year observation and simulation study of daily rainfall-runoff and river pollutant transport in a small catchment area of ​​a reservoir in a drinking water source in Zhejiang Province. The research systematically considered watershed land use types, agricultural farming system composition, fertilizer application, livestock manure, atmospheric deposition, biological nitrogen fixation and non-agricultural non-point source input sources, and estimated the nutrient budget of small watersheds for different land use types. Based on the daily rainfall, the daily-scale runoff of the watershed was simulated, and the maximum water inflow of the river in the small watershed was determined. According to the measured daily-scale nutrient output and runoff of the river output section, the river entry coefficient of pollutants in the small watershed was obtained. According to the river entry coefficient model, the long-term series of pollutant outp...

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Abstract

A method for obtaining key parameters of a river multi-level dam system, comprising the following steps: 1) constructing a biogeochemical budget model and a pollutant output coefficient model of pollutants in a river basin; 3) Determine the relationship between river flow, retention time, multi-level dam, and river pollutant retention rate; 4) According to the initial concentration of non-point source pollution entering the river, the concentration expected to be purified after interception, and The interception rate of pollutants by a single-stage dam determines the number of dam-building stages; 5) Multi-stage hydraulic lifting dams are constructed according to the dam-building stages. The method for obtaining key parameters of a river multi-stage dam system of the present invention improves the simulation accuracy of large-scale non-point source pollution in the river basin and the simulation accuracy of the time scale of non-point source pollution in the river basin; strengthens the self-purification ability of the river to improve the water quality, and meets the requirements of the receiving water body. Pollutant discharge requirements.

Description

technical field [0001] The invention relates to the technical field of non-point source pollution control and treatment in small watersheds, in particular to a method for obtaining key parameters of a river multi-level dam system. Background technique [0002] With the development of society and economy, in order to increase crop yield and economic income, small watersheds (source watersheds) are experiencing continuous expansion of agricultural scale, intensification and great changes in agricultural production methods. As a result, the proportion of inputs into production factors such as agriculture and fertilizers has increased, and a large amount of unused fertilizers and pesticides have been lost into rivers through rainfall runoff. In addition, rural domestic sewage, livestock and poultry manure and breeding wastewater have also become important sources of non-point source pollution of water bodies in rural areas in my country. The non-point source pollutants from the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F113/08G06F119/14
CPCG06F30/20G06F2113/08G06F2119/14Y02A20/152
Inventor 晏维金张培培王芳
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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