Method for treating eutrophication water with artificial wet land and facilities thereof

Abstract

The invention provides a method for treating an eutrophication water body by utilizing an artificial marsh and a facility thereof. The method comprises the following steps that: an eutrophication water body to be treated is sent to an upflow type coarse filtering bed by a pumping and collecting pipeline; the upflow type coarse filtering bed carries out removing treatment to suspended substances and algae substances in the eutrophication water body; the water body treated by the upflow type coarse filtering bed is evenly distributed to a vertical flow ecological filtering bed by a water feeding and distributing system and subject to secondary biochemical treatment by the vertical flow ecological filtering bed; effluent water is recycled and reused; deposited sludge in the upflow type coarse filtering bed is discharged to a sludge drying filtering bed for stabilization treatment; and a wet sludge filtrate reflows to the upflow type coarse filtering bed for aftertreatment. The proposal of the invention adopts a method of combining the upflow type coarse filtering bed, the vertical flow ecological filtering bed and the sludge drying filtering bed to treat the eutrophication water body, can not only effectively remove the suspended substances and the algae substances but also solve the problem of treating blue algae sludge with low cost, has the characteristics of good algae removing effect and large water treatment amount and is widely suitable for the long-term water purification of the eutrophication water body.

Description

technical field [0001] The invention relates to a treatment method for eutrophic water, in particular to a method and facility for treating eutrophic water by using artificial wetlands, and belongs to the technical fields of environmental protection engineering and water treatment. Background technique [0002] Eutrophication of water is the result of abnormal reproduction of autotrophic organisms in water rich in nitrogen, phosphorus, organic matter and other nutrients. The eutrophication of water bodies caused by nitrogen and phosphorus pollution is a worldwide environmental problem. [0003] Nutrient-rich water bodies usually have poor fluidity and net capacity, and are increasingly polluted by humans. In my country, the eutrophication of surface water has threatened the safety of drinking water for hundreds of millions of people. At present, pollution source control and ecological restoration methods are mainly used for governance, and constructed wetlands are one of t...

AI Technical Summary

Problems solved by technology

The disadvantage of this device is that it occupies a large area and the efficiency of removing algae is low

[0008] Usually, the supporting facilities for small-scale water treatment are not perfect, and improper disposal of primary and secondary sludge will cause secondary pollution to the environment

At the same time, the disposal of general engineering sludge requires mechanical dehydration and drying, which is a high-energy-consuming process. Even if the supporting disposal facilities are often not in operation

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