Method for in-situ treatment of eutrophic ground water

A technology of eutrophication and in-situ treatment, which is applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of no breakthrough in plant floating bed carrier technology, unsuitable for large-scale production, Secondary pollution and other issues, to achieve the effect of low cost, low maintenance cost, and reduce COD

Inactive Publication Date: 2008-04-09
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) There is no breakthrough in the cost-effective plant floating bed carrier technology suitable for large-scale production
So far, most researchers use foamed plastic boards as floating beds, which are not only costly, but also cause secondary pollution, which is not suitable for large-scale production

Method used

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  • Method for in-situ treatment of eutrophic ground water

Examples

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Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1, a kind of method of in-situ governance eutrophication surface water, carries out following steps successively:

[0043] 1), carrier production:

[0044] Firstly, a grid-shaped nylon cloth is used to sew a flat cloth bag with a width of 1.5 meters, a length of 4.0 meters, and a height of 0.08 meters. The upper and lower sides of the cloth bag are lined with elastic fiber materials with strong water absorption, and then foam particles are evenly arranged in the cloth bag. Control the uniform setting of 5000-8000 grams of foam particles in each cubic meter of cloth bag; finally, evenly add several lines on the cloth bag, divide the cloth bag into several small areas, and play the role of fixing and flattening the cloth bag to prevent the inside of the cloth bag Foam particles move. Like this, the seedbed planting body has just been made.

[0045] 2), making a fixed frame:

[0046] As shown in Figure 1, the fixed frame is a rectangle 1 with a width of 1.5 m...

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Abstract

The invention discloses a method for in-situ treatment of eutrophicated surface water. The method comprises the following steps: firstly, carrier preparation; secondly, semen coicis pre-culture; thirdly, secondary semen coicis culture; fourthly, seedbed preparation, which refers to spreading the semen coicis seeds uniformly according to a proportion of 24.5-25.5 dry weight per/m<2> on wetted seedbed carriers for shoot plants; fifthly, treatment of eutrophicated surface water, namely, when the semen coicis on the seedbed grows 7-10cm tall, transplanting the seedbeds into the surface of a water area to be treated with 0.2-0.3 square meter seedbed/cubic meter water area. The method of the invention adopts the special plant of semen coicis, and can quickly remove nitrogen and phosphorus in eutrophicated water to purify the water quality without the production of secondary pollution.

Description

technical field [0001] The invention relates to a method for resource utilization and ecological control of eutrophic surface water. Background technique [0002] In recent years, the discharge of domestic sewage in our country has increased year by year, and the pressure on secondary sewage treatment plants has also continued to increase, resulting in the potential threat of eutrophication of water bodies. The eutrophication of water bodies has gradually become one of the most concerned issues of many governments and the public in contemporary countries. According to a survey by the United Nations Environment Program (UNEP), 30%-40% of lakes and reservoirs worldwide have been affected by eutrophication in varying degrees. Among the 131 major lakes in my country, 67 lakes have reached the eutrophic level, accounting for 51.2%; among the 39 representative reservoirs, 12 have reached the eutrophic level, accounting for 30%. [0003] At present, the treatment of eutrophicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
Inventor 杨肖娥高冲王小忠熊集兵
Owner ZHEJIANG UNIV
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