Fore-reservoir system driven by natural energy in lake outlet regions

Abstract

The invention discloses a fore-reservoir system driven by natural energy in lake outlet regions, belonging to the field of fore-reservoirs. The fore-reservoir system comprises five units: a water diversion storage buffer area, an ecological interception and sedimentation area, an intensifying and purifying area, a deep purification area and an ecological stable area. The fore-reservoir system disclosed by the invention solves the problem of power needed by the water inflow, intensification and purification of reservoir areas by adopting a wind energy and solar energy driving technology and enhances the treatment efficiency of the five units through the link-by-link purification and the step-by-step interception of the five units, thereby achieving the final reduction of pollutants entering lakes; the fore-reservoir system disclosed by the invention can finally realize the target of removing 30 percent of TN (Total Nitrogen), TP (Total Phosphorus) and COD (Chemical Oxygen Demand) loads through the combined action of the five units; most water quality indexes can achieve and be superior to an IV-V class standard of the national surface water environmental quality standard after treatment; outflow water treated by the fore-reservoir system can be used as water for fishery, landscape, agricultural irrigation, and the like; and in addition, the invention can provide a scientific, effective and referable technology for fore-reservoir construction, the reduction of pollution loads entering the lakes and lake eutrophication control in the lake outlet regions.

Description

technical field [0001] The invention relates to a lake eutrophication control system, in particular to a front storage system driven by natural energy in Hukou District. Background technique [0002] Pre-reservoir is called pre-dam or pre-reservoir in English. Since the late 1950s, Germany, Denmark, and the former Czech Republic have successively carried out the research and practice of using pre-reservoir to control the eutrophication of water bodies (Klaus Pütz, Jürgen Benndorf , The importance of pre-reservoirs for the control of eutrophication of reservoirs, Water Science and Technology, 1998, 37(2): 317–324). This technology has also been used in the non-point source control of Yuqiao Reservoir and Dianchi Lake in my country, and has been introduced successively (Bian Jinzhong et al., Feasibility Study on Pre-reservoir Countermeasures for Eutrophication Prevention and Control of Yuqiao Reservoir, Urban Environment and Urban Ecology, 1994 , 7 (3): 5-9 Yang Wenlong et al....

AI Technical Summary

Problems solved by technology

[0005] A large amount of nitrogen and phosphorus pollutants enter the lake (reservoir) through the lake mouth, causing eutrophication of the lake. However, the previous single technology has low efficiency in removing nitrogen, phosphorus and other pollutants, and the lake mouth area is mostly in the open field , the power supply is very difficult, and the system power cannot be solved. This invention provides the pre-storage technology and construction method for the removal of nitrogen and phosphorus nutrients driven by natural energy in the lake mouth area of ​​the plain river network area

The water flow in the reservoir area is driven by wind energy lifting, which overcomes the hydraulic shortcomings of the small river drop in the plain area, which is not conducive to the water flow of the pre-reservoir; the present invention integrates existing technologies by constructing a three-level purification area and an ecological stability control area for the pre-reservoir. , to effectively improve the processing efficiency of the system; in view of the current natural situation in Hukou District of my country, the power supply is very difficult and cannot drive the system to operate, so natural energy such as wind energy and solar energy is used

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