Ecological revetment purification system

Abstract

The invention relates to the field of river ecological bank revetment projects and particularly relates to an ecological bank revetment purifying system, which has the advantages that the purifying treatment process is prolonged, the purifying efficiency of biochemical reactions is improved, and the nitrogen-containing surface-source pollutants with relatively high nitrogen content are efficiently removed. The ecological bank revetment purifying system comprises a bank revetment above the normal water level of a river bank slope, wherein the bank revetment comprises a protection pile driven into the river bank slope and a gabion fixed on the river bank slope; the protection pile consists of multiple individual piles in rows, and a gap exists between adjacent individual piles; a first impervious layer is arranged between the protection pile and the gabion; the protection pile, the gabion and the first impervious layer form a reaction tank; a vegetable layer, an adsorption layer and a denitrification layer parallel to the river bank slope are arranged in the reaction tank sequentially from top to bottom; multiple second impervious layers are arranged on the vegetable layer and the adsorption layer in a direction vertical to the river bank slope; and the second impervious layers sequentially divide the reaction tank into multiple secondary reaction tanks.

Description

technical field [0001] The invention relates to the field of river ecological revetment engineering, in particular to an ecological revetment purification system for purifying nitrogen-containing non-point source pollutants. Background technique [0002] In recent years, the water quality of rivers and lakes has been seriously polluted, eutrophication has occurred frequently, and soil erosion has also occurred frequently. Therefore, how to control pollutants from entering rivers and lakes, improve water quality and prevent large-scale loss of water and soil has become an urgent task. Task. River non-point source pollution is one of the main causes of river pollution, especially with the acceleration of urbanization, changes in the nature of urban land use, and the increase in the proportion of impermeable areas, the runoff of rainwater has increased significantly and it carries The amount of pollution has also increased, and the non-point source pollution of rivers caused b...

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Problems solved by technology

At present, the common ecological bank revetment models mainly include vegetation ecological bank revetment, ecological bag bank revetment, ecological concrete bank revetment, gabion bank revetment, etc. Although my country has achieved certain results in the improvement of river and lake slopes by using this type of bank revetment model, it is also found that Some problems, such as: 1. The hydraulic retention time of the existing river and lake ecological revetment system is short, resulting in short purification treatment procedures and poor purification effect; 2. When facing non-point source pollutants with high nitrogen content, the revetment The system has limited removal efficiency of pollutants

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