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Progressive zero-power reaeration system for river channels

A stepped, river-course technology, applied in the field of river water environment management, to achieve low maintenance costs, improve the phenomenon of black and odorous water bodies, and avoid complexity and high costs

Inactive Publication Date: 2018-02-09
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problem of black and odorous water in existing urban inland rivers, the technical problem to be solved by the present invention is to provide a step-type zero-power reoxygenation system for rivers, which can achieve good reoxygenation effect and solve the problem of inland rivers with small slopes in current cities. Black and odorous water problems caused by low dissolved oxygen content, and simple structure, easy installation, and low cost

Method used

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  • Progressive zero-power reaeration system for river channels
  • Progressive zero-power reaeration system for river channels
  • Progressive zero-power reaeration system for river channels

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0023] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, this embodiment includes a river channel 4, and a three-stage weir plate 1 is installed along the water flow direction in the river channel 4. The weir plate 1 is composed of upper and lower layers, and each layer of weir plate is provided with a row of V-shaped sawtooth openings on the top edge. ; 2. The height of the lower weir plate corresponds to the dry water level of the river, and the height of the upper weir plate corresponds to the normal water level of the river. figure 2 For this embodiment, the river is in a low water level state; image 3 For this embodiment, the river is in a normal water level state.

[0024] There is also a gravel biological contact oxidation zone 3 below the water drop of the last weir plate 1. Generally, the gravel in the natural river can be direct...

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Abstract

The invention discloses a progressive zero-power reaeration system for river channels; a river channel (4) is involved, at least one level of weir plate (1) is mounted in the river channel (4) along awater flowing direction and includes an upper layer and a lower layer, the top edge of each layer of the weir plate is provided with a row of V-shaped saw tooth gaps (2), the height of the lower layer of the weir plate corresponds to the low water level of river, and the height of the upper layer of the weir plate corresponds to the normal water level of river. The problem of black and odorous water due to low content of dissolved oxygen in rural small-slope inner rivers at present is solved, good reaeration is provided for river water, the failure of aerobic decomposition of organics due toinsufficient dissolved oxygen in the rural inner rivers is overcome, and the progressive zero-power reaeration system for river channels is simple in structure, convenient to mount and low in cost.

Description

technical field [0001] The invention belongs to the technical field of river water environment treatment, and in particular relates to a reoxygenation system for river courses. Background technique [0002] Black and odorous water bodies are easy to form in urban inland rivers during the dry season, mainly because when the content of organic pollutants in the water body is too high, under the action of aerobic microorganisms, the decomposition of organic matter will consume a large amount of oxygen in the water, turning the water body into anoxic or anaerobic state. Under anoxic and anaerobic conditions, metal ions such as iron and manganese in water form compounds such as ferrous sulfide and manganese sulfide with sulfur ions in water. Suspended particles adsorb ferrous sulfide, manganese sulfide, etc., causing the water body to turn black; organic matter decays and decomposes, producing odorous substances such as ammonia, hydrogen sulfide, mercaptans, sulfides, organic am...

Claims

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Application Information

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IPC IPC(8): C02F3/02
CPCC02F3/02C02F2103/007Y02W10/10
Inventor 邵知宇柴宏祥李霜张晓媛徐雷何强
Owner CHONGQING UNIV
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