A shallow water channel/small watershed ecological management system

Abstract

The invention discloses an ecological management system for a shallow water channel / small watershed, which includes an anti-scour biological blanket laid on both revetments of the river channel and a plurality of water storage slow flow structures built in the river channel, and the multiple water storage slow flow structures along the river The water flow direction of the channel is arranged at intervals in sequence. The water storage and slow flow structure includes an enhanced ecological stacked dam, an underwater forest and a T-shaped artificial wetland. There are multiple wetlands, and multiple T-shaped constructed wetlands are constructed in the downstream area of ​​the enhanced ecological stacked dam. Multiple T-shaped constructed wetlands are arranged in staggered intervals along the river flow direction, and two adjacent T-shaped constructed wetlands are respectively connected to the river channel. The two river banks are connected, and multiple T-shaped dam-shaped constructed wetlands make the river flow always in an S-shape. This system solves the problem that domestic rivers and lakes are not differentiated, resulting in poor governance of shallow waters, strengthens the self-purification ability of water bodies, and realizes long-term purification of rivers.

Description

technical field [0001] The invention relates to the technical field of environmental engineering water environment treatment, in particular to a shallow water channel / small watershed ecological treatment system. Background technique [0002] As the carrier of urban water systems, urban rivers not only have natural functions such as flood discharge and sewage discharge, but also have comprehensive functions such as hydrophilicity, leisure, ecology, and landscape. However, with the acceleration of urbanization in our country, the impact of man-made damage on rivers is more serious. Some rivers are turbid to varying degrees, dry all the year round, lack of clear water, eutrophication makes it difficult for some aquatic animals and plants to survive, and even mixed with fishy smell and other problems. , It takes a long time and a lot of money to make the shore green and the scenery beautiful, but in the end it is too difficult to improve the water quality, and there is an embarr...

AI Technical Summary

Problems solved by technology

However, with the acceleration of urbanization in our country, the impact of man-made damage on rivers is more serious. Some rivers are turbid to varying degrees, dry all the year round, lack of clear water, eutrophication makes it difficult for some aquatic animals and plants to survive, and even mixed with fishy smell and other problems. , it takes a long time and a lot of money to make the shore green and the scenery beautiful, but in the end, it is too difficult to improve the water quality, and there is an embarrassing situation of beautiful scenery and sewage, and it is difficult to achieve satisfactory results.

[0003] The technologies commonly used in river channel management are mainly focused on the research and application of single technologies such as dredging, water diversion, aeration, chemical flocculation, biological purification, etc., and it is difficult to effectively integrate and apply them. At the same time, lakes and rivers are common in China River management adopts a set of governance technology models - "source control and sewage interception - water quality improvement - ecological restoration", without a more targeted core governance technology model for the characteristics of changes in water level and flow velocity in the river, which will easily lead to In the treatment of rivers, there is no distinction between pollution, medium and clean, and the method of "cooking in one pot" is adopted, resulting in increased costs and reduced efficiency.

[0004] Chinese patent CN104674752B discloses "A Urban River Management System and Its River Improvement Method", which is characterized by adopting the methods of "segmentation and governance", "dividing water and governance", "cross-strait interconnection" and "three river diversions" Urban rivers with high flood control requirements, but for shallow rivers, small watersheds and rivers with low flood control standards, the engineering volume is relatively large and unnatural, resulting in certain limitations in its governance

Images