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Applying method for purifying water quality technology by netting case grass planting method

A technology for purifying water quality and application methods, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. The effect of reducing harmful pollutants

Inactive Publication Date: 2005-07-27
GUIZHOU ACAD OF ENVIRONMENTAL SCI & DESIGNING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these papers introduced the water purification technology of "growing grass in net cages", they did not propose specific application methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Two square frames are made of bamboo, the area is 15m×15m and 16m×16m respectively, the fish net with mesh size of 3cm×3cm is fixed on the two square frames, and the shape is fixed by 4 corners and angle irons , And use floats as floats and rocks as sinkers. 1.5kg / m in early September 2000 2 Sprinkle the goldfish algae into the net cage and put it into the micro-polluted water body of Hongfeng Lake in Guizhou. Use sinkers and floats to adjust the depth of the net bottom to 6m. From September to December 2000, Ceratophyllum algae in the cages increased the oxygen significantly in the water body. The oxygen increased by more than double from September to October on a sunny day; the oxygen increased by about 2 mg / L in November; and the oxygen increased by about 1 mg / L in December. According to the average value, the dissolved oxygen in the cage reached 10.08mg / L, while the corresponding data outside the cage was 8.16mg / L, a difference of 19% between the two.

Embodiment 2

[0040] Example 2: Using a cement pond with an area of ​​30m2, a stainless steel pipe was erected at a distance of 30cm from the bottom, and a fishing net with a mesh of 3cm×3cm was fixed on it, and the pressure was 1.5kg / m 2 Sprinkle the eutrophic water of Yunnan Xingyun Lake through the cement pond by sprinkling the hornwort in the cage. From December 2003 to February 2004, the water quality was monitored, and the hydraulic load was 0.5m 3 / d·m 2 Under the conditions, the oxygenation capacity is more than doubled, the total phosphorus reduction rate is 50%, and the total nitrogen reduction rate is 30% to 70%. It is especially harmful to the extremely harmful ammonia nitrogen, nitrous nitrogen, and toxic algae (such as Microcystis ) The reduction rate is 70%, 90%-100%, 90%-100%.

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Abstract

A method for purifying water quality by net cage grass breeding achieves deep purification for urban sewage and aquatic flowers and vegetables plantation in lakeside. Its advantages include to improve water quality and environment, and to realize non-foaming oxygen supply.

Description

Technical field [0001] The present invention relates to a biological treatment technology of water, and in particular to an application method of a water purification technology using plant characteristics. Background technique [0002] "Grass culture in cages" refers to the depth of light compensation when submerged plants are not planted in the bottom mud of lakes or rivers, but placed in cages similar to fish cages. The cages are placed in the water body. In order to meet the photosynthesis requirements of aquatic plants, the cages are also equipped with sinkers and floats. Plant aquatic plants at a certain density in the cage. [0003] In recent years, the application of aquatic organisms in the treatment of water environment and the prevention of eutrophication pollution in rivers and lakes has received extensive attention and has been gradually improved. People have found in research that among aquatic organisms, aquatic plants, especially higher aquatic plants, are increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
Inventor 谢田
Owner GUIZHOU ACAD OF ENVIRONMENTAL SCI & DESIGNING
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