A regenerated water supply type lake water purification device and construction method

Abstract

The invention discloses a water purifying device of regenerated water supplied lakes and a construction method thereof. The water purifying device comprises a water purifying box and a mud adsorption device. A retaining wall is arranged on the water purifying box. The top end of the retaining wall is provided with a water baffle plate. A purifying cavity, a water storage cavity, and a mud filtering cavity are arranged in the water purifying box. The bottom end of the retaining wall is provided with a water gate. The mud adsorption device comprises a dredging pipeline, a baffling device, and a water suction pump. The baffling device is fixedly connected to the end part of the dredging pipeline. The construction method comprises the following steps: (1) carrying out setting-out survey; (2) digging a ground pit; (3) installing a frame support; (4) installing pipe channels; (5) pouring concrete; (6) installing a water purifying box; (7) installing a mud adsorption device; and (8) performing trial run of water purification. The construction steps are simple, the dam is protected, the construction efficiency of water purifying device is improved, and the water purifying device is suitable for lakes with different sizes.

Description

technical field [0001] The invention relates to a regenerated water supply type lake water purification device and a construction method. Background technique [0002] Eutrophic water poses a serious threat to ecological balance, fisheries, aquaculture and human health. The first is the impact on the biological community. Due to the increase of nitrogen and phosphorus content in the water body, the plankton or algae will multiply rapidly, and the biomass will increase rapidly. At the same time, the number of species will be greatly reduced, and the balance of the ecosystem will be destroyed. Second, the substrate decomposes organic matter under anaerobic conditions and releases harmful gases, which have toxic effects on fish and other aquatic organisms. Third, the rapid increase in the number of phytoplankton in the water greatly reduces the transparency of the water, thereby affecting the photosynthesis of aquatic plants. The photosynthesis of aquatic plants on the surface...

AI Technical Summary

Problems solved by technology

The first is the impact on the biological community. Due to the increase in the nitrogen and phosphorus content of the water body, the plankton or algae will multiply rapidly, and the biomass will increase rapidly. At the same time, the number of species will be greatly reduced, and the balance of the ecosystem will be destroyed.

Second, the substrate decomposes organic matter under anaerobic conditions and releases harmful gases, which have toxic effects on fish and other aquatic organisms

Third, the rapid increase in the number of phytoplankton in the water greatly reduces the transparency of the water, thereby affecting the photosynthesis of aquatic plants. The photosynthesis of aquatic plants on the surface is strong, which makes the dissolved oxygen on the surface too high, while the bottom is due to the large decrease in light intensity. Affect the photosynthesis and oxygen production of plants, resulting in a lack of oxygen in the water body, resulting in a large number of fish and plant deaths

[0003] In the prior art, the purification treatment of lake water mainly adopts artificial floating island purification treatment, sediment dredging construction or water diversion engineering, but the effect is not very obvious, and the investment is relatively large, requiring high maintenance costs

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