Shallow and narrow riverway ecological management system based on artificial ecological island and construction method thereof

Abstract

The invention discloses a shallow and narrow riverway ecological management system based on an artificial ecological island and a construction method thereof. A plurality of artificial ecological islands are constructed in a riverway, a submerged plant planting blanket is laid on a riverbed of the riverway, and an aeration device is arranged; wherein an island body of the artificial ecological island is an annular body with a hollow middle part, a water flow channel supporting structures are arranged at intervals in a staggered manner at the bottom of the annular body, and water flow is filtered and purified through a filter material matrix filled in the annular body; in addition, an aeration point is arranged at the hollow position of the annular body, and air is pumped into the water body in the part, so that the content of dissolved oxygen in the water body can be increased, and the water quality can be improved; emergent aquatic plants and floating-leaved plants are planted on thebiological matrix soil layers at the upper half part and the annular top of the annular body, and meanwhile, a submerged plant planting blanket on which submerged plants are cultivated is paved on a riverbed, so that the aquatic plants can be used for further purifying a water body and beautifying an island body.

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...

AI Technical Summary

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

Images