Ecological restoration and purification method for water of lake and pool wet land

Abstract

The invention relates to an ecological restoration and purification method for water of lake and pool wet land. The method is characterized by comprising the following treatment steps sequentially: a first stage, a second stage and a third stage, wherein the first stage comprises the steps of pumping the water of the lake and pool wet land to dryness sectionally, performing activity, disinfection and dehydration treatment on sludge of the lake and pool wet land, prefabricating and mounting a submerged aeration facility, planting a submerged vegetation community, and filling in the water of the original lake and pool wet land; the second stage comprises the step of putting water purification bugs into the water for treating suspended matters in the water and purifying the water, such as algae and detritus; and the third stage comprises the steps of planting floating-leaved plants in the water, and configuring aquatic animals capable of eating partial aquatic plants for restoring a food chain of a water ecosystem. The method can ensure that the restored or purified water can reach a Category III or above primary indicator of Environmental Quality Standards for Surface Water (GB 3838-2002); the water purification effect is enduring; and both a symptom and a root cause are treated.

Description

technical field [0001] The invention relates to the field of environmental ecological restoration, in particular to a water ecological restoration and purification method applied to lakes, ponds, and wetlands where the water environment quality is in the standard state of Class V or inferior to Class V in the Environmental Quality Standard for Surface Water (GB3838-2002) . Background technique [0002] At present, with the rapid development of social economy and urbanization, the water environment of lakes, ponds, and wetlands is polluted to varying degrees, and the water environment quality is in Class IV or V of the "Environmental Quality Standards for Surface Water" (GB3838-2002), or even inferior. Class V standard status. Control lakes, ponds, and wetland water pollution, especially the long-term ecological restoration and purification of water bodies, and continuously meet the main indicators of the "Surface Water Environmental Quality Standards" (GB3838-2002) to reach...

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Problems solved by technology

[0008] None of the above four methods can eliminate the pollution of the water body by treating both the symptoms and the root causes, and cannot absorb nutrient-rich substances in the water or only absorb and transfer 20% of the nutrient-rich substances in the water at most. Most of the nutrient-rich substances are still dissolved in the water. Even if the blue-green algae in the water are removed, when the blue-green algae spores in the air fall into the nutrient-rich water, the blue-green algae can still reproduce rapidly, and in severe cases, the oxygen in the water will be exhausted, causing the death of aquatic animals, and the transparency of the water body cannot exceed 0.9 meters. And the effect of water pollution control can not last long

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