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Blue algae mud reinforced coagulant aid and application thereof in blue algae mud treatment

A coagulant and blue-green algae technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of poor dehydration effect and reduced volume of blue-green algae sludge cake, achieve good dehydration effect and improve fishing efficiency

Inactive Publication Date: 2008-02-20
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems that the traditional cyanobacteria dehydration is difficult, and the cyanobacteria mud becomes more viscous after adding conventional flocculants, and the dehydration effect is poor. In the application of cyanobacteria sludge, it is used to treat cyanobacteria sludge, firstly to carry out flocculation reaction and then dehydration and drying, the resulting cyanobacteria sludge cake volume is greatly reduced, which is convenient for transportation and improves the salvage efficiency

Method used

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  • Blue algae mud reinforced coagulant aid and application thereof in blue algae mud treatment
  • Blue algae mud reinforced coagulant aid and application thereof in blue algae mud treatment
  • Blue algae mud reinforced coagulant aid and application thereof in blue algae mud treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The cyanobacteria used in this example came from the shore of Dapu, Yixing, Taihu Lake, and the sampling time was at a more serious stage after the cyanobacteria outbreak period. The cyanobacteria mud was yellow-green and had a strong odor.

[0026] The cyanobacteria mud strengthening coagulation aid is based on 100 parts by weight, and the coagulation aid contains the following substances:

[0027] Polyaluminum Chloride: 10

[0028] Diatomaceous earth: 90

[0029] Take 2000ml of cyanobacteria mud, add hydrochloric acid to adjust pH=5, add 100g of cyanobacteria agent suspension of the present invention that is 20% by weight. Stir rapidly in a beaker for 3 minutes (stirring speed 200 rpm), and keep still to separate layers. The sludge settlement ratio (volume of sludge / total volume) at 15 minutes was 90%, and the sludge settlement ratio at 60 minutes was 70%. Quantitatively measure the sedimentation and stratification water of cyanobacteria sludge for advanced treatme...

Embodiment 2

[0033] The cyanobacteria used in this example came from the shore of Dapu, Yixing, Taihu Lake, and the sampling time was at a more serious stage after the cyanobacteria outbreak period. The cyanobacteria mud was yellow-green and had a strong odor.

[0034] The cyanobacteria mud strengthening coagulation aid is based on 100 parts by weight, and the coagulation aid contains the following substances:

[0035] Aluminum trichloride: 50

[0036] Diatomaceous earth: 50

[0037] Take 2000ml of blue-green algae mud, add hydrochloric acid to adjust pH=3, add 30% by weight of blue-green algae agent suspension of the present invention 100g. Stir rapidly in a beaker for 3 minutes (stirring speed 200 rpm), and keep still to separate layers. The sludge settlement ratio (volume of sludge / total volume) at 15 minutes was 80%, and the sludge settlement ratio at 60 minutes was 60%. Quantitatively measure the sedimentation and stratification water of cyanobacteria sludge for advanced treatment ...

Embodiment 3

[0041] The cyanobacteria used came from the shore of Dapu, Yixing, Taihu Lake. The sampling time was in the more serious stage after the blooming period of cyanobacteria. The cyanobacteria mud was yellow-green and had a strong odor. The experimental site is the pilot test base of Yixing Environmental Technology R&D Center of Nanjing University, Yixing Environmental Science Park Innovation and Entrepreneurship Park.

[0042] The cyanobacteria mud strengthening coagulation aid is based on 100 parts by weight, and the coagulation aid contains the following substances:

[0043] Ferrous sulfate: 30

[0044] Diatomaceous earth: 60

[0045] Bentonite: 10

[0046] Take 2000ml of cyanobacteria mud, add hydrochloric acid to adjust pH=4, and add 100g of cyanobacteria agent suspension of the present invention with a percentage by weight of 10%. Stir rapidly in a beaker for 3 minutes (stirring speed 200 rpm), and keep still to separate layers. The sludge settlement ratio (volume of slu...

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Abstract

The invention discloses a cyanobacteria mud enhancing auxiliary agent and application in cyanobacteria mud processing thereof. The cyanobacteria mud enhancing auxiliary agent, which is measured by 100 weight portions, consists of the materials: aluminum iron line soluble salt: 10-50 portions; silicate mineral rock soil powder: 50-90 portions. The aluminum iron line soluble salt is mixture of aluminum chloride, aluminum sulfate, ferric sulfate, ferrous sulfate, polymeric aluminum chloride, polymeric ferric sulfate and polymeric aluminum ferric sulfate or mixture of any of aluminum chloride, aluminum sulfate, ferric sulfate, ferrous sulfate, polymeric aluminum chloride, polymeric ferric sulfate and polymeric aluminum ferric sulphate. The silicates mineral rock soil powder is the mixture of diatomite, fly ash, acid clay and bentonite or the mixture of any of diatomite, fly ash, acid clay and bentonite. Before the cyanobacteria mud enhancing auxiliary agent is used for the cyanobacteria mud processing, a reserved weight ratio of 10-30 percent of suspension liquid is prepared by the cyanobacteria mud enhancing auxiliary agent, then a weight ratio of 1-5 percent of the suspension liquid is added into the cyanobacteria mud. The invention has good dehydration effect, promptly control the serious threat caused by algae toxins and lays the solid foundation of the utilization of cyanophytes.

Description

technical field [0001] The invention relates to a product for treating blue-green algae mud and its application in treating blue-green algae mud, more specifically, a kind of strengthening coagulant for blue-green algae mud and its application in treating blue-green algae mud. Background technique [0002] With the rapid economic development of Taihu Lake and other inland lake basins, the pollutants discharged into rivers and lakes are increasing day by day, and the speed of pollution has exceeded the purification capacity of the lake body itself. The large discharge of some phosphorus and nitrogen-containing compounds has accelerated the The process of eutrophication in lakes leads to the abnormal reproduction and growth of algae, especially blue-green algae, which leads to the deterioration of water quality and frequent outbreaks of massive algae blooms, which not only destroys the healthy and balanced aquatic ecosystem, but also deteriorates the sensory properties of the w...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 任洪强杨云军丁丽丽符波
Owner NANJING UNIV
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