Large medium river course compound platform surface source control and purification system

Abstract

The present invention is a surface source interception and purification system for a compound platform of a large and medium river course. At the junction of the river slope and the compound platform, an interception ditch with a trapezoidal cross-section with a wide upper part and a narrower lower part is provided. The layers are filled with gravels of different particle sizes to form a circular gravel layer, a medium gravel layer and a crushed small gravel layer respectively. Concrete bricks are laid on the top of the compound platform, and the waterside side of the compound platform is set as a slope revetment, and sand-free concrete blocks are laid on the slope revetment. And plant submerged plant communities, floating plant communities and emergent plant communities in sequence according to the water depth. Advantages: Rainfall runoff non-point source pollutants can be intercepted and purified by intercepting horizontal ditches, herbaceous plants, gravel layers, and aquatic plants in the waterfront zone of the compound platform. It creates a suitable habitat and realizes the unification of hydrophilic entertainment, flood discharge, non-point source interception and purification functions and ecological functions of the compound riverbed of large and medium rivers. It has simple structure, convenient construction, stable function, low cost and convenient use.

Description

technical field [0001] The invention relates to a technical method for ecological restoration of rivers and interception and purification of non-point source pollution, in particular, it is beneficial to transform the compound platform of large and medium-sized rivers with an ecological method, so that it can meet the requirements of water-friendly entertainment and flood discharge, and at the same time have non-point source interception , water purification and ecological habitat multifunctional technical method. The invention belongs to the technical field of river ecological restoration. Background technique [0002] At present, the compound riverbed of large and medium-sized rivers is usually composed of slopes, compound platforms, vertical revetments, and river channels. Under normal circumstances, the river flows in the river channel, and the platform can be used by passers-by to fully enjoy the pleasure of being close to the water; when the flood comes, the river wat...

AI Technical Summary

Problems solved by technology

[0003] However, this kind of compound riverbed still has certain defects, which are mainly manifested in the following aspects: (1) As point source pollution is increasingly controlled, non-point source pollution has become an important form of pollution affecting river water quality. However, the design of the above-mentioned compound riverbed does not consider Non-point source interception and purification function, so the interception and purification effect on non-point source pollution is very limited, causing non-point source pollutants to directly enter the river water body, causing great pollution to the river water quality; (2) The waterfront side of the platform of the above-mentioned compound riverbed adopts vertical revetment forms, which are not conducive to the habitat and growth of aquatic organisms, and will have adverse effects on the health of river ecosystems

Images