Ecological submerged dam system for urban landscape rivers and construction method

A technology for urban landscape and submerged dams, applied in chemical instruments and methods, filling, dams, etc., to achieve the effect of good effect, good water purification effect and simple construction

Pending Publication Date: 2017-12-12
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that traditional submerged dams aggravate the eutrophication of urban river water, the invention drives the discharged water to automatically aerate and dissolve oxygen, and adopts ecological technologies such as biofilm method and phyto

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  • Ecological submerged dam system for urban landscape rivers and construction method

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Example Embodiment

[0021] Example 1.

[0022] The invention discloses an ecological submerged dam system and a construction method for urban landscape rivers. The ecological submerged dam system includes a submerged dam 1, a stilling pond 2, a waterwheel 3, submerged plants 4, and a mud trough 5; the stilling pond 2 includes a protective tank and a sill; the submerged dam 1 and The force pond 2 is constructed by a gabion cage; the water wheel 3 is located downstream of the submerged dam 1 and above the head end of the stilling pond 2; the submerged plants 4 are located on the top of the sill. The water flow falling from the top of the dam drives the waterwheel 3 to rotate, continuously rolling up and falling the water body in the stilling pool 2, causing the water body to be fully aerated and dissolved oxygen along the way, and the highly oxygenated water body flows through the latent structure formed by the film-hanging gabion cage. When dam 1 and stilling pool 2, the eutrophic substances in the ...

Example Embodiment

[0028] Example 2.

[0029] The present invention also provides a construction method of a submerged dam system used in a landscape river course as follows: First, riverbed cleaning. Excavate and clean up the riverbed at the dam site. Second, the production of gabion cages. In the prefabrication factory, according to the design requirements, the biofilm is hung on the gravel to form the film-mounted gravel, and the gabion cage is made at the same time, and finally the film-mounted gravel is filled into the gabion cage to form a specific film-mounted stone cage. . Third, it is fixed on site. Use a crane to hoist the film-mounted gabion cages completed in the prefabrication plant on the cleaned river bed, and perform lap reinforcement between the gabion cages to form the submerged dam 1, the stilling pool 2, etc. , The main construction is completed, the submerged plants 4 are planted on the top of the bottom sill of the stilling pool 2, and finally the waterwheel 3 is installed...

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Abstract

The invention discloses an ecological submerged dam system for urban landscape rivers and a construction method. The ecological submerged dam system comprises a submerged dam, an absorption basin, a water truck, submerged plants and a sludge discharge tank, wherein the absorption basin comprises an apron and a tail-weir; and the submerged dam and the absorption basin are constructed from bio-film forming stone net cages. Water falling from the dam top drives the water truck to rotate, and water in the absorption basin is continuously rolled up and drops, so that the water is fully doped with gas dissolved oxygen along the way, bio-film decomposition of eutrophic substances in the water is facilitated, and the produced sludge automatically converges into the sludge discharge tank so as to be discharged; and the residual eutrophic substances in the water are absorbed by the submerged plants at the tail-weir, and the water body is further purified. The construction method comprises the following steps: 1, cleaning the riverbed; 2, manufacturing the bio-film forming stone net cages; and 3, performing field installation and fixation. The discharged water is driven to be automatically doped with gas dissolved oxygen, the river water is continuously purified by adopting a bio-film process, phytoremediation and other ecological technologies, and the ecological submerged dam system has the advantages of being excellent in water purification effect, ecologically attractive, simple in construction, convenient to maintain, low in cost and the like.

Description

technical field [0001] The invention belongs to the fields of water conservancy engineering and environmental engineering, and in particular relates to an ecological submerged dam system and a construction method for urban landscape river courses. Background technique [0002] Due to the small rainwater collection area and poor connectivity with the surrounding water system, urban landscape rivers often suffer from water pollution, low flow or even cut-off, seriously affecting the ecological environment of the city. As a low-head hydraulic structure with both "water storage" and "water discharge" functions, the submerged dam can effectively adjust the water level in front of the dam and the discharge flow, ensuring the ecological flow of the river and the landscape water. It is widely used in urban landscape rivers. widely used. However, due to the blocking effect, the water velocity slows down, and traditional submerged dams tend to aggravate the eutrophication of river wa...

Claims

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Application Information

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IPC IPC(8): C02F3/32E02B3/10E02B8/06E02D17/18
CPCE02B3/10E02B8/06E02D17/18C02F3/32C02F3/322
Inventor 秦卫星邓思佳胡惠仁吴依婷杨涛廖紫欣谭钰陈宏
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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