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Method for removing nutrient salt in water

A nutrient salt and water body technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of depending on the restoration effect, difficulty in implementation, secondary pollution, etc., and achieve governance Large depth, eliminate algae pollution, and improve water quality

Inactive Publication Date: 2007-01-24
WUHAN UNIV
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AI Technical Summary

Problems solved by technology

[0006] Due to the shortcomings of the above-mentioned technologies, such as high cost, secondary pollution, and difficult implementation, the existing artificial floating bed technology mainly relies on terrestrial plants planted on foam plastic carriers to absorb nutrients in the water body, and the restoration effect depends on plant growth. condition, and there is a problem with the disposal of plants after the completion of the project

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A kind of method step of removing nutrient salt in water body is as follows:

[0022] 1. Build a biological island: According to the area and depth of the treated water body, 10% of the water surface area is used as the floating island area, and a layer of 20cm floating islands is built within a water depth of 1.5m; two layers of 20cm floating islands can be built at a water depth of 2m at an interval of 50cm ;

[0023] 2. Biological island construction: a flexible or rigid 1m×1m×20cm floating island unit frame is made of nylon, plastic or stainless steel with a screen aperture of 1cm;

[0024] 3. Filling the biological island matrix: fill the floating island frame with light, suspended, porous, and adsorptive matrix (plastic, pumice, zeolite, ceramsite, etc.) with a particle size of 2cm, which is aquatic microorganisms, aquatic plants and aquatic animals, etc. Attachment carrier for growth;

[0025] 4. Bio-island placement: put the floating island filled with matrix ...

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Abstract

The invention relates to a method to remove nutrition salt in water body. Its including the following steps: first, building biology island according to the square and depth of the water body needs to be handle; second, using nylon, plastic or stainless steel to construct flexible or steel frame of floating island; third, filling light, suspending, porous and absorbing base material into the floating island; finally, putting the floating island into ultrophication water body, and microorganism can grow and form organic membrane on the light carrier. The invention can reduce nutrition salt consistency from 40% to 80% and lasting for 2 years to 3 years. Moreover, it has advantage of improving water quality, easy to maintain and long term effect.

Description

technical field [0001] The invention relates to the field of restoration and treatment of eutrophic water bodies, in particular to a method for removing nutrient salts in water bodies, which is suitable for improving the water quality of eutrophic bays, lakes, reservoirs, rivers and urban landscape water bodies with deteriorating water quality. Background technique [0002] The deterioration of water environment is a worldwide problem. Improving the eutrophication trend of natural water bodies and controlling the pollution of urban landscape water bodies have become one of the most concerned issues of governments, scientific research institutions and the general public. At present, conventional restoration and treatment technologies for eutrophic water bodies mainly include physical means (dredging of sediment), chemical means (dosing chemicals) and biological means (planting aquatic plants, stocking fish fry), etc. [0003] Sediment dredging can qu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/10
CPCY02W10/10
Inventor 张维昊方涛
Owner WUHAN UNIV
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