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Method for repairing organic substance polluted water body by using typha minima

A technology of organic matter and cattail, applied in the field of using plants to treat polluted water bodies, can solve the problems of mutagenesis, carcinogenicity, teratogenicity, etc., and achieve the effect of easy promotion and low cost

Inactive Publication Date: 2013-04-24
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many synthetic organic substances are not easily degraded by microorganisms and are easy to accumulate in the environment
Some of them also have toxic effects on organisms and humans, such as carcinogenic, teratogenic, and mutagenic effects, which have constituted a serious threat to human health.

Method used

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  • Method for repairing organic substance polluted water body by using typha minima
  • Method for repairing organic substance polluted water body by using typha minima
  • Method for repairing organic substance polluted water body by using typha minima

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The waters located in the Grand Canal Forest Park in Tongzhou District are polluted by organic matter caused by polycyclic aromatic hydrocarbons, nitrous compounds, organic phosphorus, food additives, detergents, etc. The COD value in the water body is 39.07mg / L. The area of ​​the experimental water area is 66m 2 . The steps to remediate polluted water bodies are:

[0030] 1) if figure 1 , figure 2 , make artificial floating island 1 (380cm*400cm) with expanded polystyrene material, and plant the selected aquatic plant cattail 2 on artificial floating island 1. One hole. The distances between the holes and the edge of the floating island are 50cm and 90cm, and the distance between adjacent holes is 100cm and 141cm. Plant in April.

[0031] 2) Fix the floating islands planted with cattails in the water area and arrange them in the center of the water area. The floating islands cover 23% of the water area.

[0032] 3) After the cattail grows for 50 days during the...

Embodiment 2

[0035] The water area (artificial wetland) located in the Grand Canal Forest Park in Tongzhou District, with an area of ​​280m 2 , the COD value in water is 29.28mg / L.

[0036] The dimensions and materials of the floating islands are the same as in Example 1. Two floating islands fixed together with iron wires are placed in the water area, and the floating islands cover 10.9% of the water area. After 50 days, the COD was 19.5mg / L, and the removal rate was 33.4%.

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Abstract

The invention provides a method for repairing an organic substance polluted water body by using typha minima. The method comprises the following steps of: 1) manufacturing a porous artificial floating island, and planting typha minima on the artificial floating island; 2) fixing the artificial floating island on which the typha minima is planted in a water area, wherein 10 to 30 percent of the water area is covered by the floating island; 3) during the growing season, after the typha minima grows for 48 to 58 days, harvesting the parts above roots; 4) after harvesting the parts above the roots, harvesting newly-grown plant parts before the rotting of plants. By adopting the method, an emergent aquatic plant namely the typha minima is planted in the polluted water body, and harmful organic substances in the water body are absorbed, so that the aim of purifying water is fulfilled. The method is simple and feasible, low in cost and easy to popularize, and is an effective method for controlling the organic substance polluted water body.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a method for using plants to treat polluted water bodies. Background technique [0002] The organic matter pollution of the water environment is a global problem, and its severity, nature and harm are constantly developing and changing with the development of industry. Since the 20th century, especially since the 1950s, the development of the chemical industry has increased the types and quantities of artificially synthesized organic substances. In 1880, there were 1.12 million known organic species, which increased to 150,000 in 1910, 400,000 in 1940, and 5 million in 1978. Currently, there are more than 7 million known organic species. Still rising at a rate of thousands per year. The total amount of synthetic organic matter in the world has reached 21.5 billion tons. These organic substances have been and are entering the environment through various channels, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32A01G1/00
Inventor 刘晶岚张振明张艳刘萌萌吴海龙黄灏峰南海龙王小平智信周彩贤
Owner BEIJING FORESTRY UNIVERSITY
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