Treatment method for microcystin in tap water

A microcystin and treatment method technology, which is applied in water/sewage treatment, special compound water treatment, oxidized water/sewage treatment, etc., can solve the problems of ozone oxidation degradation that no one has studied, and save reaction time and energy consumption , high processing efficiency, and the effect of improving activity

Active Publication Date: 2017-04-26
建德市环保科技创新创业中心有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] But at present, no one has studied the special catalyst for the ozonation degradation of microcystin in tap water.

Method used

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  • Treatment method for microcystin in tap water
  • Treatment method for microcystin in tap water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Catalyst preparation: The activated carbon particles were washed with tap water and dried in a constant temperature drying oven at 105°C. 380 kg of cleaned activated carbon was immersed in 760 L of 3.5 mol / L hydrochloric acid solution for 24 hours, then washed with tap water until neutral, and dried at 105 ° C to obtain pretreated activated carbon.

[0049] After mixing ethanol and butyl titanate, add nitric acid solution dropwise, so that the volume ratio of the three reaches 1:10:1.5, and the pH reaches 2.5. Stir well and age to get TiO 2 Sol. Soak pretreated activated carbon in 1400L TiO 2 In the sol, after fully reacting for 12 hours, wash, dry at 105°C, and calcinate in a muffle furnace at 650°C for 4 hours to obtain activated carbon-supported TiO 2 catalyst.

[0050] Mix 3.8mM ferric nitrate solution with 11.5mM nitric acid solution, adjust the pH of the mixture to 2.2, and add the above activated carbon-loaded TiO 2 The catalyst was immersed in 1000L mix...

Embodiment 2

[0053] (1) Catalyst preparation: the honeycomb ceramic particles were washed with tap water, and dried in a constant temperature drying oven at 105°C. 200 kg of cleaned honeycomb ceramics were immersed in 200 L of 3.0 mol / L hydrochloric acid solution for 24 hours, then washed with tap water until neutral, and dried at 105 ° C to obtain pretreated honeycomb ceramics.

[0054] After mixing ethanol and butyl titanate, add hydrochloric acid solution drop by drop, so that the volume ratio of the three reaches 1:6:0.8, and the pH reaches 2.5. Stir well and age to get TiO 2 Sol. Soak the pretreated honeycomb ceramics in 1000L TiO 2 In the sol, after fully reacting for 14 hours, wash, dry at 105°C, and calcinate in a muffle furnace at 600°C for 4 hours to obtain honeycomb ceramic-supported TiO 2 catalyst.

[0055] Mix 1.5mM ferric nitrate solution with 10.0mM nitric acid solution, adjust the pH of the mixture to 2.0, and mix the above-mentioned honeycomb ceramic-supported TiO 2 T...

Embodiment 3

[0058] (1) Catalyst preparation: the ceramsite was washed with tap water, and dried in a constant temperature drying oven at 105°C. Immerse 100kg of cleaned ceramsite in 100L of 1.0mol / L hydrochloric acid solution for 24h, then wash with tap water until neutral, and dry at 105°C to obtain pretreated ceramsite.

[0059] After mixing ethanol and butyl titanate, add hydrochloric acid solution dropwise, so that the volume ratio of the three reaches 1:4:0.5, and the pH reaches 1.5. Stir well and age to get TiO 2 Sol. Soak the pretreated ceramsite in 620L TiO 2 In the sol, after fully reacting for 18 hours, wash, dry at 105°C, and calcinate at 500°C for 2 hours in a muffle furnace to obtain ceramsite-supported TiO 2 catalyst.

[0060] Mix 1.2mM ferric nitrate solution with 7.5mM nitric acid solution, adjust the pH of the mixture to 1.5, and mix the above ceramsite-loaded TiO 2 The catalyst was immersed in 150L mixed solution, subjected to microwave hydrothermal treatment for 30...

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Abstract

The invention discloses a treatment method for microcystin in tap water. Supported TiO2/FeOOH serves as a catalyst for catalyzing an ozonation reaction to remove microcystin in tap water. According to the treatment method for microcystin in tap water, supported TiO2/FeOOH serves as the catalyst for catalyzing the ozonation reaction of tap water, microcystin in tap water can be efficiently removed, the harm of microcystin in tap water to human health can be eliminated, and the safety of tap water can be guaranteed.

Description

technical field [0001] The invention relates to the field of water pollution control and water supply treatment, in particular to a method for treating microcystin in tap water. Background technique [0002] Microcystin is an important pollutant released by algae cells after the outbreak of cyanobacteria bloom. It is the most widely distributed hepatotoxin, which can cause the death of aquatic animals, birds, livestock and even humans. In recent years, microcystins have been continuously detected in drinking water, and the concentration is close to or even exceeding the safety limit (1 μg / L, GB5749-2006 Hygienic Standard for Drinking Water), which poses a serious threat to drinking water supply and public health safety. [0003] The removal of microcystin can be divided into intracellular microcystin and extracellular microcystin. Intracellular microcystin usually refers to the microcystin that exists in the cell but is not released into the water body, and can be removed b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78B01J23/745
CPCB01J23/002B01J23/745C02F1/725C02F1/78C02F2305/023
Inventor 官宝红于洁
Owner 建德市环保科技创新创业中心有限公司
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