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Method for effectively degrading algal toxin in water

A technology of algae toxins and microcystins, applied in the direction of light water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of low reaction efficiency and energy waste, achieve efficient use of ultraviolet radiation, reduce ineffective absorption, The effect of stable performance

Inactive Publication Date: 2015-09-30
张易祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the reaction efficiency of the current ultraviolet reactor is not high and there is a great waste of energy

Method used

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  • Method for effectively degrading algal toxin in water
  • Method for effectively degrading algal toxin in water
  • Method for effectively degrading algal toxin in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 2 mg (2 μM) of microcystin MC-LR to 100 mL of alcohol-water mixed solvent, dissolve, and the alcohol is methanol or ethanol, and the volume ratio of alcohol to water is 0.5:10 to 1.0:10. Then, 1.98g (0.05M) of ammonium hexafluorotitanate, 0.78g (0.12M) of boric acid and 0.36g (0.01M) of ammonium hexafluorosilicate were added, stirred thoroughly, and reacted for 15 hours at a constant temperature of 35°C. The powder particles generated by the reaction were evenly coated on a quartz fiber filter belt with a length of 30 cm and a width of 25 cm, and dried, and then calcined at a temperature of 400 ° C for 2 to 2.5 hours, with a heating rate of 10 ° C / min, and taken out after cooling. , to obtain a quartz fiber filter belt loaded with titania porous microspheres with molecularly imprinted function.

[0028]The obtained quartz fiber filter tape loaded with titania porous microspheres with molecular imprinting function was sewn into a filter sleeve with a length of 30cm a...

Embodiment 2

[0033] Add 200 mg, (0.2 mM) of the extract of natural cyanobacterial microcystins to 200 mL of alcohol-water mixed solvent, dissolve, the alcohol is methanol or ethanol, and the volume ratio of alcohol to water is 0.5:10 to 1.0:10. Then, 1.98g (0.05M) of ammonium hexafluorotitanate, 0.78g (0.12M) of boric acid and 0.36g (0.01M) of ammonium hexafluorosilicate were added, stirred thoroughly, and reacted at a constant temperature of 35°C for 15 hours. The powder particles generated by the reaction are evenly coated on a quartz fiber filter belt with a length of 30 cm and a width of 25 cm, and dried, and then calcined at a temperature of 400 ° C for 2 to 2.5 hours at a heating rate of 10 ° C / min, and taken out after cooling. , to obtain a quartz fiber filter belt loaded with titania porous microspheres with molecularly imprinted function.

[0034] The obtained quartz fiber filter belts loaded with titania porous microspheres with molecular imprinting function were sewn into filter...

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Abstract

The invention relates to a method for effectively degrading algal toxin in water. The method comprises the following processing steps: (1) adding MC(Microcystin)-LR into an alcohol-water mixed solvent, oscillating to enable the MC-LR to be completely dissolved, adding ammonium hexafluorotitanate, boric acid and ammonium hexafluorosilicate, reacting for 15-25 hours at the constant temperature of 35 DEG C, immersing a quartz fiber filter band into substances generated through the reaction, taking out and airing the quartz fiber filter band, calcining the quartz fiber filter band at the temperature of 400 DEG C for 2-2.5 hours with the temperature increasing rate of 10 DEG C / min, cooling, and taking out the quartz fiber filter band, so as to obtain the quartz fiber filter band loaded with titanium dioxide porous micro-spheres with the molecular imprinting function; (2) sewing the prepared quartz fiber filter band loaded with the titanium dioxide porous micro-spheres with the molecular imprinting function into a filter sleeve capable of sleeving an ultraviolet lamp tube according to the profile of the ultraviolet lamp tube; (3) inserting the ultraviolet lamp tube capable of being immersed into water into the filter sleeve, and then, placing the filter sleeve into a photoreaction container filled with microcystin polluted water. Through the adoption of the method, the efficiency for degrading algal toxin in water is relatively high.

Description

Technical field: [0001] The invention relates to the technical field of photodegradation of water micro-pollutants, in particular to a method for effectively degrading algal toxins in water. Background technique: [0002] Microcystins are metabolites produced by toxic cyanobacteria. Microcystins can change a variety of enzyme activities, cause a series of physiological and biochemical reactions in the cell disorder, lead to liver cell damage, promote the occurrence of tumors, and can cause primary liver cancer and colorectal cancer. Microcystins also have multi-organ toxicity, genotoxicity, neurotoxicity, immunotoxicity, and can cause abnormal development of the tested organisms, and their toxic effects range is very wide. The upper limit of algal toxins in drinking water recommended by the World Health Organization (WHO), represented by MC-LR, is 1.0 μg·L -1 . Algal toxins are stable under visible light irradiation, but unstable under UV light irradiation. [0003] In v...

Claims

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Application Information

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IPC IPC(8): C02F1/32C02F1/28
Inventor 胡晓斌张易祥吴湘张荣飞
Owner 张易祥
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