Ecological Concrete Purification System for Eutrophic Water

Abstract

The invention discloses an environmental concrete purifying system for a eutrophic water body. The system comprises an environmental concrete purifying unit, wherein the environmental concrete purifying unit comprises a box body, an environmental concrete permeable layer, a plant and an environmental concrete adsorption matrix; the environmental concrete permeable layer is arranged at the top of the box body and communicated with the inside of the box body; the environmental concrete permeable layer is composed of environmental concrete; the plant is grown in the environmental concrete permeable layer, and the root system goes through the environmental concrete permeable layer and reaches the inside of the box body; the environmental concrete adsorption matrix is composed of environmental concrete and arranged in the box body; the environmental concrete is prepared from gravel, cement, silicon dioxide micro powder, a water reducing agent and water in a weight ratio of (1500-1700):(250-300):(30-40):4:(50-80); and the permeability coefficient of the environmental concrete is greater than or equal to 1cm / s, the compressive strength is higher than or equal to 15MPa, the communication porosity is 20-30%, and the communication porosity means that the pores are communicated up and down in the environmental concrete permeable layer. The system disclosed by the invention can be used for effectively purifying the eutrophic water body while the energy consumption is low and the system is easy to operate and durable in use.

Description

technical field

[0001] The invention relates to the technical field of water biological purification. More specifically, the invention relates to an ecological concrete purification system for eutrophic water bodies. Background technique

[0002] In recent years, rivers, lakes and other ecological systems in our country have been severely damaged, leading to eutrophication of water bodies, deteriorating water quality, and causing a series of environmental problems. In the prior art, ecological technologies are generally used to treat eutrophic water bodies, including artificial wetlands, ecological floating islands, and artificial sedimentation beds. Among them, artificial wetland can improve water purification ability through different water distribution methods, but it occupies a large area, and the substrate pores are easy to be blocked and difficult to replace. Ecological floating islands and artificial sinking beds can use the sheltering effect of aquatic plants and ro...

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