Electro-Fenton method and apparatus for removing multi-algae toxins from water

A microcystin and water removal technology, which is applied in chemical instruments and methods, water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems that algae toxins have not been reported, and achieve easy control, easy operation, and equipment compact effect

Inactive Publication Date: 2005-06-22
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical methods include ozone oxidation, chlorine oxidation, photocatalytic oxidation, Fenton reagent oxidation, etc., but there is no report on the method of degrading algae toxins in water by using electro-Fenton reaction

Method used

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  • Electro-Fenton method and apparatus for removing multi-algae toxins from water
  • Electro-Fenton method and apparatus for removing multi-algae toxins from water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1. Generation of hydrogen peroxide in the electric Fenton reaction process

[0016] Reaction target solution volume: 40ml high-purity water

[0017] Reaction target solution temperature: 25°C

[0018] Solution initial pH: 3.00

[0019] Plate area: 9cm 2

[0020] Electrolyte concentration: 0.02M Na 2 SO 4

[0021] Oxygen flow rate: 30ml / min

[0022] Current intensity: 0.04A, 0.06A, 0.08A, 0.12A

[0023] Reaction time: 10min, 20min, 30min, 40min, 60min

[0024] The hydrogen peroxide generation before and after treatment is shown in Table 1.

[0025] Table 1 Example 1 hydrogen peroxide generation situation

[0026]

[0027] As can be seen from Example 1, as the current intensity increases, the amount of hydrogen peroxide produced also increases, indicating that this method can effectively produce hydrogen peroxide.

Embodiment 2

[0028] Embodiment 2. The removal of algal toxins by different treatment processes

[0029] Reaction target solution volume: 40ml

[0030] Reaction target solution concentration: MCRR 8.81mg / L, MCLR 6.36mg / L

[0031] Reaction target solution temperature: 25°C

[0032] Solution initial pH: 3.00

[0033] Plate area: 9cm 2

[0034] Electrolyte concentration: 0.02M Na 2 SO 4

[0035] Oxygen flow rate: 30ml / min

[0036] Respectively activated carbon fiber (ACF) adsorption (without electricity), Fe-free 2+ Catalytic electro-oxidation and electro-Fenton oxidation (Fe 2+ 1mM) to treat water samples containing algal toxins, the removal of algal toxins before and after treatment is shown in Table 2.

[0037] time

[0038] It can be seen from Example 2 that the algae toxins MC-RR and MC-LR are mainly degraded and removed by the electro-Fenton reaction, and neither adsorpt...

Embodiment 3

[0039] Embodiment 3. The removal of different initial concentrations of algae toxin raw water by electric Fenton

[0040] Reaction target solution volume: 40ml

[0041] Ferrous ion concentration: Fe 2+ 1mM

[0042] Reaction target solution temperature: 25°C

[0043] Solution initial pH: 3.00

[0044] Plate area: 9cm 2

[0045] Electrolyte concentration: 0.02M Na 2 SO 4

[0046] Oxygen flow rate: 30ml / min

[0047] Current intensity: 60mA

[0048] The concentration of algae toxins are a.MCRR 8.81mg / L, MCLR 6.36mg / L b.MCRR4.40mg / L, MCLR 3.18mg / L c.MCRR 2.20mg / L, MCLR 1.59mg / L water samples containing algae toxins The treatment was carried out, and the removal of algae toxins before and after treatment was shown in Table 3.

[0049] time

[0050] It can be seen from Example 3 that the method and device of the present invention have better removal ef...

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Abstract

The invention provides an electro-Fenton method and apparatus for removing multi-algae toxins from water, wherein the method comprises, using the shape stabilized electrode as the anode for the reactor, using activated carbon fiber as the cathode, letting in quantitative oxygen to the cathode surface, charging small amount of ferrous salt into the algae-containing toxin solution with pH=3 as catalyst, galvanizing electrolyzation to remove the algae toxin.

Description

technical field [0001] The invention relates to an electro-Fenton method and device for removing various microcystins in water. Specifically, activated carbon fiber is used as a cathode, and dissolved oxygen in water is used to electrochemically reduce the surface of the cathode to generate hydrogen peroxide, and ferrous ions catalyze the peroxidation. Hydrogen decomposition produces highly active hydroxyl radicals to oxidize and degrade algal toxins. technical background [0002] Due to industrial and agricultural pollution, various water bodies receive excessive nitrogen and phosphorus and other nutrients, causing eutrophication of water bodies, resulting in the proliferation of algae and other aquatic organisms, and eventually leading to algal blooms. At present, the degree of eutrophication of various water bodies in my country is quite serious. More than 60% of lakes in my country are eutrophic, and the area, frequency and intensity of algal blooms are increasing year ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/461C02F1/58C02F1/72
Inventor 曲久辉王爱民史红星刘会娟雷鹏举
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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