Shallow and narrow river ecological governance system and its construction method based on artificial ecological island

Abstract

The invention discloses an ecological management system for shallow and narrow rivers based on artificial ecological islands and a construction method thereof. It constructs a plurality of artificial ecological islands in the river, lays submerged plant planting blankets on the riverbed of the river, and arranges an aeration device. The island body of the artificial ecological island is a hollow annular body in the middle, and the water flow channels and support parts are arranged in a staggered manner at the bottom of the annular body, and the water flow is filtered and purified through the filter matrix filled in the annular body; Set an aeration point at the hollow position of the annular body, and inject air into the water body in this part, which can increase the dissolved oxygen content in the water body and improve the water quality; Emergent plants and floating leaf plants are planted on the biological matrix soil layer, and at the same time, a submerged plant planting blanket with submerged plants cultivated is laid on the river bed. These aquatic plants can be used to further purify the water body and beautify the island body at the same time. .

Description

technical field [0001] The invention relates to a river channel ecological management system and a construction method thereof, in particular to an artificial ecological island-based shallow narrow river ecological management system and a construction method thereof, belonging to the technical field of river channel water management. Background technique [0002] With the development of social production, rivers all over the world are facing different degrees of pollution from industry, agriculture, life and other aspects. Most of the rivers near cities are relatively shallow and narrow rivers. However, due to the small water environment capacity and shallow and narrow river channels, the water body has poor self-purification ability after being polluted, and it is easy to become a sink for domestic sewage, rainwater and garbage. As a result, a large amount of dissolved oxygen in the water body is consumed, resulting in the lack of oxygen in the water body and a black and od...

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Problems solved by technology

Most of the rivers near cities are relatively shallow and narrow rivers. However, due to the small water environment capacity and shallow and narrow river channels, the water body has poor self-purification ability after being polluted, and it is easy to become a sink for domestic sewage, rainwater and garbage. As a result, a large amount of dissolved oxygen in the water body is consumed, resulting in the lack of oxygen in the water body and a black and odorous state, causing the entire ecosystem to be in crisis.

[0003] At present, there are many ways to carry out ecological management of river channels. For example, using floating bed technology on the surface of the river channel combined with aquatic plants planted on the bed body to control the water quality on the surface of the water body. This method ignores the control of water quality at the bottom of the channel. In addition, the existing technology also improves the water quality of the river by setting up sewage treatment equipment on both sides of the river, but this method involves more sewage treatment equipment, and the maintenance and management in the later stage are more complicated and the investment is relatively large; there is also the existing technology Use corresponding feeding equipment to put various materials such as microorganisms that can be used for water purification into the river to improve water quality, but this method requires regular feeding and strict monitoring of the number of microorganisms in the river, and the actual operation is poorly controllable

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