Configuration method of in-situ ecological purification system for river and lake water

Abstract

The invention discloses a configuration method of a river-lake water body in-situ ecological purification system. The configuration method comprises the steps that changes of the concentrations of nutritive elements in a water body flowing across terrestrial vegetational zones in different widths are analyzed; according to removal effects of the nutritive elements such as N and P, terrestrial plants with water body purification effects reaching an expected value are confirmed by comparison; nutritive substances in various water plants and nutritive substances of the water body are determined before and after the water plants are cultivated; the water plants with the water body purification effects reaching the expected value are confirmed; according to the water body purification effects, the determined terrestrial plants and water plants are mixed and configured in vertical and horizontal directions; the width, the density and the gradient of constructed vegetation of the river-lake water body in-situ ecological purification system are optimized; and the minimum width, the optimal slope and the optimal density when the water body purification effect is optimal are selected. The river-lake water body in-situ ecological purification system constructed according to the configuration method has smaller floor area; the river bank substrate gradient modification projects are reduced greatly; the investment is low; and removal rates of N and P in the water body are better.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for configuring an in-situ ecological purification system for river and lake water. Background technique [0002] In recent years, with the continuous development of my country's social economy, population agglomeration has accelerated, and the urbanization rate has increased significantly. Under the influence of increasing human activity intensity, a large amount of nutrients such as nitrogen (N) and phosphorus (P) required by organisms have entered Rivers and lakes lead to eutrophication of water bodies in rivers and lakes, decrease in biodiversity, damage to the ecological balance of water bodies, severe degradation of river and lake ecosystems, increasing water pollution, and sharp deterioration of water quality, which affects the quality and safety of drinking water in the region and seriously threatens human beings. healthy. According to statistics,...

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Problems solved by technology

[0004] However, there are few existing technical solutions on how to construct river and lake water ecological purification systems through reasonable combination and allocation of plant species in the buffer zone of the river to maximize the benefits of water purification, and there is a lack of relevant technical means.

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