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Method for repairing eutrophic water body by using vallisneria spinulosa

A technology of eutrophication and thorn grass, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve obvious recovery effect, increase content, and improve transparency.

Active Publication Date: 2014-09-10
JIANGSU DONGZHU LANDSCAPE CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical restoration method cannot improve the structure of the aquatic ecosystem and improve the self-purification ability of the water body while restoring the water body.

Method used

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  • Method for repairing eutrophic water body by using vallisneria spinulosa
  • Method for repairing eutrophic water body by using vallisneria spinulosa
  • Method for repairing eutrophic water body by using vallisneria spinulosa

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Embodiment 1

[0023] A method for repairing eutrophic water bodies using Erythrina chinensis, comprising the steps of:

[0024] (1) Select the eutrophic water body that needs to be repaired, and measure the total nitrogen content TN, total phosphorus content TP, ammonia nitrogen content NH4+-N, chemical oxygen demand COD, dissolved oxygen DO, transparency, and pH value. The numerical value that water body measures in the embodiment is as follows:

[0025] The total nitrogen content (TN) in the water is 6.249 mg / L, the total phosphorus content (TP) is 0.414 mg / L, the ammonia nitrogen content (NH4+-N) is 33.223 mg / L, and the chemical oxygen demand (COD) content is 17.115 mg / L L, the dissolved oxygen content (DO) is 6.954 mg / L, the pH is 7.70, and the transparency is 23 cm;

[0026] (2) Select Erythrina chinensis, black algae, chrysanthemum, and chrysalis as aquatic plants for repairing the water body, and implant the above plants into the test pool filled with the test water body, and place ...

Embodiment 2

[0034] A method for repairing eutrophic water bodies using Erythrina chinensis, comprising the steps of:

[0035] (1) Select the eutrophic water body that needs to be repaired, and measure the total nitrogen content TN, total phosphorus content TP, ammonia nitrogen content NH4+-N, chemical oxygen demand COD, dissolved oxygen DO, transparency, and pH value. The numerical value that water body measures in the embodiment is as follows:

[0036] The total nitrogen content (TN) in the water is 6.158 mg / L, the total phosphorus content (TP) is 0.433 mg / L, the ammonia nitrogen content (NH4+-N) is 33.324 mg / L, and the chemical oxygen demand (COD) content is 17.126 mg / L L, the dissolved oxygen content (DO) is 6.967 mg / L, the pH is 7.71, and the transparency is 23 cm;

[0037] (2) Select Erythrina chinensis, black algae, chrysanthemum, and chrysoprosis as aquatic plants for repairing the water body, and plant the above plants into the test pool filled with the test water body, and place...

Embodiment 3

[0045] A method for repairing eutrophic water bodies using Erythrina chinensis, comprising the steps of:

[0046] (1) Select the eutrophic water body that needs to be repaired, and measure the total nitrogen content TN, total phosphorus content TP, ammonia nitrogen content NH4+-N, chemical oxygen demand COD, dissolved oxygen DO, transparency, and pH value. The numerical value that water body measures in the embodiment is as follows:

[0047] The total nitrogen content (TN) in the water is 6.347 mg / L, the total phosphorus content (TP) is 0.435 mg / L, the ammonia nitrogen content (NH4+-N) is 33.433 mg / L, and the chemical oxygen demand (COD) content is 17.214 mg / L L, the dissolved oxygen content (DO) is 6.958 mg / L, the pH is 7.72, and the transparency is 24 cm;

[0048] (2) Select Erythrina chinensis, black algae, chrysanthemum, and chrysalis as the aquatic plants for repairing the water body, and plant the above-mentioned plants into the test pool filled with the test water body...

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Abstract

The invention provides a method for repairing a eutrophic water body by using vallisneria spinulosa. The method comprises the following steps: (1) selecting the eutrophic water body needed to be repaired and measuring; (2) selecting the vallisneria spinulosa, hydrilla verticillata, cyperus alternifolius and myriophyllum aquaticum as aquatic plants for repairing the water body, and growing the plants in a test water pond filled with the tested water body, wherein sand of 15-20cm is added into the water pond, three groups are repeated, a sand-containing plant-free water pond is taken as a control group, and the plants are soaked in clear water within 24 hours to remove residual algae on the plants and withered stems and leaves of the plants are picked off before the plants are grown in the test water pond; (3) cultivating the plants grown in the test water pond and testing. According to the method, the vallisneria spinulosa, the hydrilla verticillata, the cyperus alternifolius and the myriophyllum aquaticum are cultivated together to repair the eutrophic water body, the repair effect is remarkable, relatively good ecological benefit is achieved, the environment is protected, and the landscape configuration effect is enhanced.

Description

technical field [0001] The invention relates to a method for repairing eutrophic water bodies by using Erythrina spinosa, belonging to the field of repairing eutrophic water bodies. Background technique [0002] In recent years, my country's agricultural, industrial and urbanization construction has accelerated, and a large amount of industrial, domestic and agricultural wastewater containing nitrogen and phosphorus nutrients has been continuously discharged into rivers and lakes in the form of point sources and non-point sources, causing algae in the water to multiply. A vicious circle is formed, which intensifies the decline of water quality and the process of eutrophication. The main eutrophication pollution indicators such as chemical oxygen demand (CODcr), total nitrogen, total phosphorus, and ammonia nitrogen in water are generally inferior to the corresponding standards 1-2. After the eutrophication of the water body, it will first endanger the aquaculture industry, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
Inventor 朱正中刘沛飞
Owner JIANGSU DONGZHU LANDSCAPE CONSTR
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