Electrochemical oxidation process for removing algae toxins from water

A technology for algal toxins and water removal, applied in chemical instruments and methods, electrochemical water/sewage treatment, separation methods, etc., can solve the problems of unreported algal toxins in water, etc. simple 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

Moreover, the chlorine addition method also has safety issues such as transportation and storage of chlorine bottles
[0005] Although people have studied many methods for removing algal toxins, there is no report on the method of using electrochemical oxidation technology to degrade algal toxins in water.

Method used

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  • Electrochemical oxidation process for removing algae toxins from water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1. Removal of different concentrations of algae toxins in raw water by electrochemical oxidation

[0026] Use high-purity water to prepare aqueous solutions containing algae toxins of different concentrations, and perform electrochemical treatment under the following conditions:

[0027] Algal toxin concentration: MCRR 12.58, 6.29, 3.14mg / L, MCLR 8.29, 4.15, 2.07mg / LNaCl initial concentration is 1.85mmol / L

[0028] pH=7.00

[0029] Current intensity I=60mA

[0030] Table 1 shows the changes in algal toxin concentration when treated at different times.

[0031] time, min

[0032] As can be seen from Example 1, the lower the initial concentration of algal toxins, the shorter the reaction time required for complete removal.

Embodiment 2

[0033] Example 2. Removal of algae toxins in raw water containing different concentrations of chloride ions by electrochemical oxidation

[0034] Use high-purity water to prepare algae toxin raw water containing different concentrations of chloride ions, and perform electrochemical treatment under the following conditions:

[0035] Initial concentration of chloride ion: 1.85, 20, 40mmol / L Cl -

[0036] Algal toxin concentration: MCRR 12.58mg / L, MCLR 8.29mg / L

[0037] pH=7.00

[0038] Current intensity I=60mA

[0039] After treatment for different time, the changes of algal toxin concentration are shown in Table 2.

[0040] It can be seen from Example 2 that with the increase of the concentration of chloride ions in the raw water, the reaction time required for the complete removal of algae toxins is shortened.

Embodiment 3

[0041] Example 3. Removal of algae toxins in raw water by electrochemical oxidation under different current intensities

[0042] Use raw water with a certain concentration of algae toxins to perform electrochemical treatment under the following conditions:

[0043] Current intensity I=40, 60, 80mA

[0044] NaCl initial concentration: 1.85 mmol / L

[0045] Algal toxin concentration: MCRR 12.58mg / L, MCLR 8.29mg / L

[0046] pH=7.00

[0047] The changes in algal toxin concentration after treatment for different time are shown in Table 3.

[0048] It can be seen from Example 3 that with the increase of the current intensity, the reaction time required for the complete removal of algae toxins is shortened.

[0049]

[0050]

[0051]

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Abstract

The invention discloses an electrochemical oxidation process for rapidly removing various dissolution state algae toxins from water simultaneously, which comprises producing a definite quantity of active chlorine in the water through electrolysis, thus removing various algae toxins from water rapidly and simultaneously, wherein the in situ electrolysis and electric field action makes the chloride ions in the water migrate to anode, and is acted by the anode to be converted into active chlorine existing in the forms of atomic state, chlorine gas, hypochlorite ions and hypochlorous acid, thus forming local high concentration active chlorine mixed oxidation agent on the anode region.

Description

technical field [0001] The invention relates to a method for quickly and simultaneously removing multiple dissolved algae toxins in water by using an electrochemical oxidation technology, belonging to the field of water treatment applications. This method converts common chlorine ions in water into active chlorine through electrolysis or electric field action, so that algae toxins in water can be quickly and completely removed; at the same time, chlorine ions themselves and heavy metal ions such as copper and lead in water are also obtained through the oxidation-reduction effect of the anode and cathode. A certain amount of water is removed, and the water quality is further purified. technical background [0002] Microcystins (MCs) are the most common class of peptide hepatotoxins produced by freshwater blue-green algae, which have a strong pro-hepatocarcinogenic effect by inhibiting the activity of protein phosphatases. Most of them exist in algae cells, and they are relea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/42C02F1/46C02F1/469C02F1/58C02F1/62
Inventor 曲久辉史红星王爱民刘会娟雷鹏举
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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