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Repairing method for water body eutrophication

A technology for eutrophication and restoration of water bodies, applied in the field of water treatment, can solve the problems of supersaturation of dissolved oxygen, affecting water quality, reducing water transparency, etc., and achieving the effects of low cost, reliable restoration and easy operation

Inactive Publication Date: 2017-01-04
云南云创数字生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Eutrophication will affect the water quality of the water body and cause the transparency of the water to decrease, making it difficult for sunlight to penetrate the water layer, thereby affecting the photosynthesis of plants in the water, and may cause a supersaturated state of dissolved oxygen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In an embodiment of the present invention, a method for repairing eutrophication of a water body comprises the following steps:

[0021] 1) Preliminary removal of large areas of floating plant residues in the water body by manual or mechanical salvage.

[0022] 2) After removing the plant residues, put a composite flocculant into the water body to fully mix and stir it with the water; after being treated with the composite flocculant for 0.5h, the water body is clear and transparent. The dosage of the composite flocculant is 3% of the water mass. The raw materials of the composite flocculant include 1 part of attapulgite clay, 3 parts of bentonite and 2 parts of natural zeolite in parts by weight. The preparation process of the composite flocculant is to spray the sulfuric acid solution containing 6% by weight respectively and evenly on the attapulgite clay and bentonite, stir evenly, and age for 4 hours; times, the thickness of the tablet is 1mm; it is carried out in...

Embodiment 2

[0025] In an embodiment of the present invention, a method for repairing eutrophication of a water body comprises the following steps:

[0026] 1) Preliminary removal of large areas of floating plant residues in the water body by manual or mechanical salvage.

[0027] 2) After removing the plant residues, put a composite flocculant into the water body to fully mix and stir it with the water; after 2 hours of treatment with the composite flocculant, the water body is clear and transparent. The dosage of the composite flocculant is 0.3% of the water mass. The raw materials of the composite flocculant include 25 parts of attapulgite clay, 35 parts of bentonite and 30 parts of natural zeolite in parts by weight. The preparation process of the composite flocculant is to spray the sulfuric acid solution containing 12% by weight respectively and evenly on the attapulgite clay and bentonite, stir evenly, and age for 8 hours; times, tablet thickness 2mm; carried out in drying furnace...

Embodiment 3

[0030] In an embodiment of the present invention, a method for repairing eutrophication of a water body comprises the following steps:

[0031] 1) Preliminary removal of large areas of floating plant residues in the water body by manual or mechanical salvage.

[0032] 2) After removing the plant residues, put the composite flocculant into the water body to fully mix and stir it with the water; after being treated with the composite flocculant for 1 hour, the water body is clear and transparent. The dosage of the composite flocculant is 0.5% of the water mass. The raw materials of the composite flocculant include 1 part of attapulgite clay, 5 parts of bentonite and 3 parts of natural zeolite in parts by weight. The preparation process of the composite flocculant is to spray the sulfuric acid solution containing 8% by weight respectively and evenly on the attapulgite clay and bentonite, stir evenly, and age for 5 hours; times, the thickness of the tablet is 1mm; it is carried ...

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Abstract

The invention discloses a repairing method for water body eutrophication. The repairing method comprises the steps that large-area floating plant residues in a water body are primarily removed through a manual or mechanical fishing mode; after the plant residues are removed, a composite flocculant is put into the water body to be fully mixed and stirred with water; after being treated with the composite flocculant for 0.5-2 h, the water body is clear and transparent, wherein the composite flucculant is prepared from attapulgite clay, bentonite and natural zeolite; submerged plants are planted in the water body, wherein the planting coverage rate of the submerged plants is controlled according to the transparency of the water body and increased along with increasement of the transparency of the water body. According to the repairing method, eutrophication materials are quickly removed, the turbid water body becomes clear and transparent, it is guaranteed that the submerged plants can successfully conduct photosynthesis, a solid foundation is laid for repairing an aquatic ecosystem of the whole water body, and reliable repairing of the eutrophication water body is effectively guaranteed. The repairing method is safe, effective, low in cost, easy and convenient to operate and suitable for large-scale popularization.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a restoration method for eutrophication of water bodies. Background technique [0002] Eutrophication refers to that under the influence of human activities, a large amount of nutrients such as nitrogen and phosphorus required by organisms enter slow-flowing water bodies such as lakes, rivers, bays, etc., causing algae and other plankton to multiply rapidly, and the water body dissolves. Oxygen levels drop, water quality deteriorates, and fish and other organisms die in large numbers. Under natural conditions, lakes also transition from oligotrophic to eutrophic, but this natural process is very slow. However, the eutrophication caused by the artificial discharge of industrial wastewater and domestic sewage containing nutrients can appear in a short period of time. When eutrophication occurs in the water body, planktonic algae multiply in large numbers, forming a water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCY02W10/37C02F9/00C02F1/00C02F1/5236C02F3/32C02F3/322C02F2301/08
Inventor 唐劲徐娅萍刘成鑫
Owner 云南云创数字生态科技有限公司
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