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Preparation method of sewage treatment agent and application of sewage treatment agent in ozonized water treatment

A sewage treatment agent, ozonated water technology, applied in water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as limiting the performance of lipophilic pollutants

Inactive Publication Date: 2021-05-04
邹金宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Cobalt tetroxide has a high surface density of hydroxyl groups and generally exhibits hydrophilic properties, which limits the performance of ozonation for the degradation of lipophilic pollutants in aqueous solutions

Method used

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  • Preparation method of sewage treatment agent and application of sewage treatment agent in ozonized water treatment
  • Preparation method of sewage treatment agent and application of sewage treatment agent in ozonized water treatment
  • Preparation method of sewage treatment agent and application of sewage treatment agent in ozonized water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Preparation of hydrophilic cobalt tetroxide composite airgel: First, weigh 1.6 mg of graphene oxide (GO) and dissolve it in 40 mL of ultrapure water, and perform ultrasonic treatment to obtain a uniform suspension, which is marked as Dispersion 1, followed by dissolving 0.48 g of cobalt nitrate hexahydrate, 0.16 g of hexamethylenetetramine, and 10 mg of L-lysine in 40 mL of ultrapure water, and stirring the mixture to obtain dispersion 2 , the above dispersion liquid 2 was added dropwise to dispersion liquid 1, and the stirring was continued to obtain dispersion liquid 3, and then the pH of the above dispersion liquid was adjusted to about 10 by sodium hydroxide solution to obtain dispersion liquid 4. The dispersion 4 was then transferred to a polytetrafluoroethylene-lined stainless steel autoclave. Then placed in an oven at 120 ºC for 10 h. After cooling to room temperature, use a disposable syringe to suck away the supernatant, then repeatedly wash it with deioni...

Embodiment 2

[0058] (1) Preparation of hydrophilic cobalt tetraoxide composite airgel: First, weigh 3.2 mg of graphene oxide (GO) and dissolve it in 40 mL of ultrapure water, and perform ultrasonic treatment to obtain a uniform suspension, which is marked as Dispersion 1, followed by dissolving 0.6 g of cobalt nitrate hexahydrate, 0.28 g of hexamethylenetetramine, and 20 mg of L-lysine in 40 mL of ultrapure water, and stirring the mixture to obtain dispersion 2 , the above dispersion liquid 2 was added dropwise to dispersion liquid 1, and the stirring was continued to obtain dispersion liquid 3, and then the pH of the above dispersion liquid was adjusted to about 10 by sodium hydroxide solution to obtain dispersion liquid 4. The dispersion 4 was then transferred to a polytetrafluoroethylene-lined stainless steel autoclave. Then placed in an oven at 140 ºC for 12 h. After cooling to room temperature, use a disposable syringe to suck away the supernatant, then repeatedly wash it with deioni...

Embodiment 3

[0061] (1) Preparation of hydrophobic cobalt trioxide composite airgel: first, weigh 1.6 mg of graphene oxide (GO) and dissolve it in 40 mL of ultrapure water, and perform ultrasonic treatment to obtain a uniform suspension, which is marked as dispersion Solution 1, then 0.84 g of cobalt nitrate hexahydrate, 0.28 g of hexamethylenetetramine and 10 mg of L-tryptophan were dissolved in 40 mL of ultrapure water, and the mixture was stirred to obtain dispersion 2, The above-mentioned dispersion liquid 2 was added dropwise to the dispersion liquid 1, and the stirring was continued to obtain the dispersion liquid 3, and then the pH of the above-mentioned dispersion liquid was adjusted to about 10 by sodium hydroxide solution to obtain the dispersion liquid 4. The dispersion 4 was then transferred to a polytetrafluoroethylene-lined stainless steel autoclave. Then place it in an oven at 110ºC for 16 h. After cooling to room temperature, use a disposable syringe to suck away the super...

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Abstract

The invention discloses a preparation method of a sewage treatment agent and application of the sewage treatment agent in ozonized water treatment, and belongs to the technical field of sewage treatment materials. The method comprises the steps: adding the dispersion liquid 2 in the step 2 into the dispersion liquid 1 in the step 1, continuously stirring to obtain a dispersion liquid 3, and adjusting the pH value of the dispersion liquid 3 to 9-11 through a sodium hydroxide solution to obtain a dispersion liquid 4; transferring the dispersion liquid 4 in the step 3 into a polytetrafluoroethylene-lined stainless steel high-pressure reaction kettle for hydrothermal reaction; after the reaction is finished, cooling to room temperature, absorbing the supernate, and repeatedly washing with deionized water and ethanol pentahydrate for a plurality of times; after standing and layering, sucking away supernatant liquid containing unreacted impurities again; and freeze-drying the Co3O4 / GO compound with low water content in the lower layer to finally obtain the sewage treatment agent. The cobaltosic oxide composite aerogel with different hydrophilicity and hydrophobicity is synthesized by adopting a simple method, and the cobaltosic oxide composite aerogel shows excellent performance on ozonization degradation of hydrophilic / lipophilic pollutants.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment materials, and in particular relates to a preparation method of a sewage treatment agent and its application in ozonated water treatment. Background technique [0002] Due to the rapid development of industrialization in modern society, environmental problems have become increasingly prominent, among which the prevention of water pollution and the purification of water resources have become a serious problem to be solved urgently. There are both hydrophilic organic matter and lipophilic organic matter in the wastewater produced by actual industrial production, etc. These pollutants have great potential harm to human health and ecological system. [0003] Ozone oxidation is the use of ozone (O 3 ) Strong oxidizing properties to achieve the purpose of oxidizing a variety of organic pollutants. These pollutants can be completely mineralized into water and carbon dioxide after decolorization...

Claims

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Application Information

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IPC IPC(8): B01J23/75C02F1/72C02F1/78C02F101/34
CPCB01J23/75C02F1/725C02F1/78C02F2101/345C02F2101/34B01J35/23
Inventor 邹金宏
Owner 邹金宏
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