Ecological repairing method for eutrophicationwater body

Abstract

The invention relates to an ecological repairing method for a eutrophication water body. The ecological repairing method comprises the following steps: setting a baffle unit inside a eutrophication water body according to a landform structure, dividing the eutrophication water body into at least two units, completely pumping out water in the first unit, sterilizing bottom mud in the first unit, and dehydrating; spraying a composite microorganism bacterial agent and iron ore powder into the bottom mud in the first unit, feeding back water of other units into the first unit till the water depthis 10-40cm; at least two days later, planting submerged plants capable of absorbing the bottom mud and nutrient substances in the water body, further putting Brachionus into the first unit, wherein the Brachionus is domesticated and is capable of specifically consuming blue-green algae; at least one week later, feeding back water of other units into the first unit till the water depth is 100-150cm; at least two days later, spraying the composite microorganism bacterial agent into the bottom mud in the first unit; at least two days later, feeding back water of other units into the first unit till a normal water level, and putting aquatic animals into the first unit.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an ecological restoration method for eutrophic water bodies. Background technique [0002] In recent decades, with the development of society and the excessive use and pollution of water resources, most of my country's shallow lakes and rivers have shown eutrophication or tend to eutrophication. At present, the control methods of eutrophic lakes mainly include chemical restoration, biological restoration and physical restoration. Among them, the sediment dredging technology in the physical restoration method is the most commonly used. This technology can directly and quickly remove the polluted sediment from the lake and increase the water storage capacity. It is suitable for water bodies with large sediment thickness and long deposition time. [0003] While sediment dredging is widely used, it also has certain environmental risks, and its main negative impact i...

AI Technical Summary

Problems solved by technology

Regarding the impact of dredging, research and evaluation of various environmental effects and risks caused by it at home and abroad, because dredging will cause various environmental effects, and the cost of dredging is high, and dredging usually cannot fundamentally In order to solve the problem of eutrophication, it is necessary to develop a new ecological restoration method that can keep the eutrophic water body stable.

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