Method for restoring river/lake water system by biological chain construction technology

Abstract

The invention relates to a method for restoring a river / lake water system by biological chain construction technology, which is implemented by constructing a biological chain system in a river / lake water system, wherein the biological chain system is composed of submerged plants, emerging plants, floating plants, floating leaf plants, aquatic animals and zooplankton. The method avoids disturbance and damage of physical or chemical technology to the water body, and is suitable for a river / lake water body with a damaged or unsound water system ecological structure. The river / lake water body treated by the biological chain construction technology is close to the natural water body; and the ecological function is gradually recovered, and the self-purification capacity is gradually improved. In addition, the method is simple to operate, has the advantages of investment saving and no pollution, and does not occupy the extra space except the river / lake water body, thereby saving the land.

Description

technical field [0001] The invention relates to a water body restoration technology, in particular to a river and lake water system biological chain construction technology. Background technique [0002] The original ecosystem of the river and lake water system, also known as the original purification system, is composed of gravel, riverbed and bank materials existing in it, and aquatic plants, zooplankton, benthic animals and large aquatic plants growing in it. This system has a certain water purification ability, which can dilute and decompose foreign pollutants. However, with the increasingly serious pollution of river and lake water bodies, the original purification system is destroyed, and the original purification ability of the river and lake water system gradually weakens; when the external pollution reaches a certain level, the purification ability of the original purification system disappears completely, and then With the accumulation of pollution, the degree of ...

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Problems solved by technology

[0003] Currently known river and lake water restoration or purification methods one-sidedly emphasize a certain effect, such as physical methods and chemical methods, which only emphasize water body oxygenation or focus on reducing the content of nitrogen, phosphorus, and organic matter; some applied biological methods one-sidedly emphasize aquatic plants or The role of microorganisms, planting submerged plants alone or adding microorganisms, does not take into account the overall factors and functions of the river and lake ecosystem, so the effect is minimal or the effect lasts for a short time