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Method and device for repairing ecology of riverway by using rubber dam and ecological floating island

A technology of ecological floating islands and rubber dams, applied in the field of river water quality ecological management, can solve the problems of small contact area between plants and water bodies, poor purification effect, and plant death, and achieve the effects of prolonging residence time, increasing transparency, and increasing dissolved oxygen

Inactive Publication Date: 2017-11-28
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in practical application, this method has the problems of low water level in the river, resulting in plant death, small contact area between plants and water body, and poor purification effect.

Method used

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  • Method and device for repairing ecology of riverway by using rubber dam and ecological floating island
  • Method and device for repairing ecology of riverway by using rubber dam and ecological floating island

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] Practical example 1: This technology is used in a river with a low water level in the north. The length between two rubber dams is 2km, the width of the river is 13m, and the size of the ecological floating island is 3m in width, 6m in length and 0.2m in height. The floating island is located in the center of the river, and the plants planted include reeds, cattails, cannas and water bamboos. The online water quality monitoring device is installed on the opposite bank of the online water level monitoring device. Since the river is located in the north, the water level of the river is low. This technology is adopted Afterwards, the water level of this section of the river rose, which effectively prevented the river from drying up. The dissolved oxygen content of this section of the river has been kept at a relatively high level, and the water quality has also been maintained at around the fourth-class standard.

Embodiment 2

[0031] Practical example 2: This technology is used in a seriously polluted river. The distance between two rubber dams is 3km, and the width of the river is 12m. Due to the long section of the river and the poor water quality, a dam is installed in the river. Two ecological floating islands with a width of 3m, a length of 6m and a height of 0.4m make the ecological floating island more capable of absorbing nutrients. The plants planted include reeds, cattails, mushroom grass, water spinach, iris and foxtail algae. Seriously, so the ecological floating island remains in a state of rotation for a long time, but the treatment effect is obvious, and the transparency of the river water body is obviously improved.

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Abstract

The invention belongs to the field of ecological management of water quality of riverways and in particular relates to a method and a device for repairing ecology of a riverway by using rubber dams and an ecological floating island. The method comprises the steps of controlling the water level between an upper limit value and a lower limit value and controlling the water quality above the set state water quality standard. The device at least comprises an upstream rubber dam, a downstream rubber dam, a gas pipeline, a gas transmission station, an online water level monitoring device, an online water quality monitoring device, the ecological floating island and a rotating device. The technical scheme has the beneficial effects that the gas transmission station is controlled by the online water level monitoring device to inflate or deflate the rubber dams to automatically control the water level of the riverway between the upstream rubber dam and the downstream rubber dam, so that growth of plants planted on the ecological floating island is facilitated; the rotating device is controlled by means of the online water quality monitoring device, so that when the water quality is relatively good, the ecological floating island does not rotate, and the blockage of water body is reduced; when the water quality is relatively poor, the ecological floating island rotates, so that the contact area of plants and water is increased, and the dissolved oxygen in the water is increased.

Description

technical field [0001] The invention belongs to the field of river channel water quality ecological management, and in particular relates to a method and a device for restoring river channel ecology by using rubber dams and ecological floating islands. Background technique [0002] In recent years, with the development of industry and the increase of population, the pollution of water resources by human beings has become more and more serious. Factors such as domestic sewage and rainwater have caused serious eutrophication and deterioration of water quality in river sections. The depth of some rivers is relatively shallow, or the water level is low during the normal and dry seasons, so effective governance cannot be carried out. The requirement for most water bodies in my country is that the water quality should meet the fourth-class water standard, and ordinary rivers cannot meet this standard. How to use ecological methods to control water quality has become a hot issue th...

Claims

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Application Information

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IPC IPC(8): C02F3/32E02B7/00
CPCC02F3/006C02F3/32C02F2103/007E02B7/005Y02W10/10
Inventor 刘璇冯晨代棋帆
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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