The method of improving the water quality of the lake source based on the artificial flow of the water intake
A technology for water intakes and lakes, applied in water conservancy projects, chemical instruments and methods, biological water/sewage treatment, etc., can solve the lack of scientificity and feasibility, it is difficult to ensure the stable improvement of local water quality, and the long-term inability of the technical system. Stability and other issues, to achieve the effect of improving water quality, preventing shock and impact
Active Publication Date: 2016-02-10
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
Although the author sees the necessity of local water quality improvement in lake water sources, the proposed technical system is still long-term and unstable, lacks scientificity and feasibility, and it is difficult to ensure stable improvement of local water quality
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Embodiment 1
[0030] This embodiment relates to a method for improving the water quality of lake water sources based on artificial flow at water intakes. The method has been implemented in Taihu Lake in Jiangsu, Longxi Town in Wenzhou, Xiapu Lake in Japan, and Ejsselmeer in the Netherlands, and has achieved remarkable results. Described method is specifically:
[0031] Step 1, for water plants using eutrophic lakes as water sources, such as figure 1 As shown, physical floating flexible enclosures are set up around 50-100 meters from the raw water intake of the lake's drinking water to form an enclosure area centered on the intake. Effects of substances on healthy aquatic ecology within enclosures;
[0032] Step 2, such as figure 2 As shown, in the enclosure, at a distance of 30-50 meters from the water intake, build an ecological filter dam with a width of 3-5 meters with 10-50 cm particle size stones, and use the physical filtering effect of the ecological filter dam and the pores of th...
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The invention discloses an artificial current generation lake water source water quality improving method based on a water intake, comprising the following steps that step 1 a barrier is arranged at a position far away from the lake water intake for a certain distance; step 2 an ecological filtering dam is arranged between the barrier and the water intake; step 3 the generation of algae is inhibited between the barrier and the ecological filtering dam by using a physical shading technology; step 4 submerged plants are planted between the barrier and the ecological filtering dam; step 5 water in the water intake is pumped by a pump to form a hydraulic power flow state system from the periphery of the barrier to the water intake. According to the method, the physical barrier is used for intercepting a large number of alga materials of an eutrophication lake from entering the area of the water intake; the water source water quality of the shallow eutrophication lake is improved and updated by water ecology repair at the area of the water intake; the artificial current generation lake water source water quality improving method based on the water intake is short in period and rapid in effect, the stability of the local ecological system is recovered, the impact on a water purification process of a water plant, caused by water body algae outburst is effectively prevented, the local water quality improving and updating targets of using the eutrophication lake as drinking water raw water are realized by using an ecological engineering technology.
Description
technical field [0001] The present invention relates to an ecological method for in-situ improvement of water quality of shallow water eutrophic lakes based on artificial flow at water intakes, in particular to a method for improving water quality of lake water sources based on artificial flow at water intakes. Background technique [0002] Lake water bodies are often the source of drinking water for surrounding towns. However, due to the lack of a balanced and coordinated relationship between economic development and environmental protection in the process of economic development, the pollutants carried by the rivers entering the lake are continuously discharged into the lake water body, resulting in frequent eutrophication of the lake water body. The growth of a large number of cyanobacteria has a huge impact on the operation of water plants that use lakes as drinking water sources and water quality security. In order to improve the quality of raw water, some cities aroun...
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IPC IPC(8): E02B3/00E02B3/02C02F3/32
CPCY02W10/37
Inventor 白晓慧
Owner SHANGHAI JIAOTONG UNIV