River waterfront multiplayer composite plant pollutant purification zone and construction method of river waterfront multiplayer composite plant pollutant purification zone

Abstract

The invention discloses a river waterfront multiplayer composite plant pollutant purification zone and a construction method of the river waterfront multiplayer composite plant pollutant purification zone. The river waterfront multiplayer composite plant pollutant purification zone comprises a sod slope protection pollutant purification zone, an emergent aquatic plant pollutant purification zone, a submerged plant pollutant purification zone and gabions. The river waterfront multiplayer composite plant pollutant purification zone has the advantages that: nonpoint source pollutants and sand carried by surface runoff are effectively intercepted and purified when passing through the system, so that the surface runoff is purified before being drained to an accepting water body. The filling material in the gabions is gradually transited to rock blocks from broken stones, and the gradual change forms good purification effect. Through the stability of the gabions, the gabions play an important role in preventing the impact of the water flow; and an area with stable water flow is formed between the gabions, so that the formation of the submerged plant zone is favorable and the pollutant purification capacity is enhanced. The offshore rock block gabions provide perching space for aquatic animals, particularly fish, and the emergent aquatic plants on the gabions provide function of sun shading.

Description

technical field [0001] The invention relates to a riverside waterfront multi-layer composite plant pollution removal strip and a construction method thereof. It belongs to the field of river water environment management and ecological restoration. Background technique [0002] Surface runoff pollution refers to the fact that rainwater and its runoff flow through the urban ground during the rainfall process, gather a series of pollutants, and then enter the water body, polluting surface water or groundwater. Setting up riverside buffer strips between surface runoff and rivers is one of the common methods to effectively reduce surface runoff pollution to rivers. [0003] The purification mechanism of the riverside buffer zone for surface runoff pollutants mainly includes the following two aspects: one is to reduce the surface runoff velocity and filter and intercept the particulate pollutants; Adsorbs dissolved pollutants in runoff. For nitrogen, when the water carrying dis...

AI Technical Summary

Problems solved by technology

However, the design of these riverside plant belts is monotonous, and only considers the land area (the common one is the river bank lawn), and the comprehensive use of terrestrial plants and aquatic plants, the concept and engineering application of multi-level design of the riverside buffer zone are not many See

Images