Aerogel-foamed rubber composite particles for sewage treatment and preparation method thereof

A foamed rubber and composite particle technology, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems that the adsorption technology cannot perform thorough adsorption and cannot thoroughly clean the water surface, etc. Achieve the effect of overcoming difficult to clean water surface

Inactive Publication Date: 2018-06-01
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, the adsorbent or adsorption technology of the above-mentioned patents can only recover part of the oil pollution extensively, and cannot thoroughly clean the water surface. Therefore, it is necessary to solve the defect that the existing adsorption technology cannot perform thorough adsorption

Method used

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  • Aerogel-foamed rubber composite particles for sewage treatment and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0044] Preparation method of airgel-foamed rubber composite particles for sewage treatment:

[0045] (1) Preparation of silica sol: Mix ethyl orthosilicate, absolute ethanol and water at a volume ratio of 15:22.5:6.5, stir for 125 minutes, adjust the pH to 5, and continue stirring for 16.5 hours to form silica Sol;

[0046] (2) Preparation of composite gel: Mix the silica sol prepared in step (1) with octylphenol polyoxyethylene ether, stir at room temperature for 22 hours, adjust the pH value to 5.5, raise the temperature to 45.5°C, and let stand After 24 hours, add acetone and leave it to stand for 21 hours to obtain a composite gel; wherein, the weight ratio of silica sol, octylphenol polyoxyethylene ether and acetone is 100:8:40;

[0047] (3) Preparation of airgel-foamed rubber composite particles: Mix nitrile foamed rubber particles and composite gel at a ratio of 40:1 by weight, stir at room temperature for 7.4 hours, then stir at 72°C for 8.5 hours, take out Granules ...

Embodiment 2

[0049] Preparation method of airgel-foamed rubber composite particles for sewage treatment:

[0050] (1) Preparation of silica sol: Mix ethyl orthosilicate, absolute ethanol and water at a volume ratio of 15:22:6, stir for 120 minutes, adjust the pH value to 4.5, and continue stirring for 16 hours to form silica Sol;

[0051] (2) Preparation of composite gel: Mix the silica sol prepared in step (1) with octylphenol polyoxyethylene ether, stir at room temperature for 21 hours, adjust the pH value to 5.5, raise the temperature to 45°C, and let stand After 24 hours, add acetone and leave it to stand for 20 hours to obtain a composite gel; wherein, the weight ratio of silica sol, octylphenol polyoxyethylene ether and acetone is 100:7:35;

[0052] (3) Preparation of airgel-foamed rubber composite particles: mix nitrile foamed rubber particles and composite gel at a weight ratio of 45:1, stir at room temperature for 7.2 hours, then stir at 68°C for 8 hours, take out Granules were ...

Embodiment 3

[0054] Preparation method of airgel-foamed rubber composite particles for sewage treatment:

[0055] (1) Preparation of silica sol: Mix ethyl orthosilicate, absolute ethanol and water at a volume ratio of 15:23:7, stir for 130 minutes, adjust the pH value to 5.5, and continue stirring for 17 hours to form silica Sol;

[0056] (2) Preparation of composite gel: Mix the silica sol prepared in step (1) with octylphenol polyoxyethylene ether, stir at room temperature for 23 hours, adjust the pH to 5.5, raise the temperature to 46°C, and let stand 24 hours, add acetone again, stand still for 22 hours, make composite gel; Wherein, the weight ratio of silica sol, octylphenol polyoxyethylene ether and acetone is 100:9:45;

[0057] (3) Preparation of airgel-foamed rubber composite particles: Mix the nitrile foamed rubber particles and the composite gel at a weight ratio of 35:1, stir at room temperature for 7.5 hours, then stir at 75°C for 9 hours, take out Granules were dried in a fl...

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Abstract

The invention relates to aerogel-foamed rubber composite particles for sewage treatment and a preparation method of the aerogel-foamed rubber composite particles for the sewage treatment, and belongsto the technical field of water pollution treatment agents. The preparation method of the aerogel-foamed rubber composite particles for the sewage treatment in particular comprises the following steps: preparing silicon dioxide and demulsifier composite gel in advance, and then preparing rubber foamed particles, and immersing the rubber foamed particles in the composite gel, so as to make the composite gel fully enter cells, and drying in a fluidized bed and drying with supercritical carbon dioxide to obtain water-body oil stain adsorption purification particles of which the particle sizes are3 to 5mm. The aerogel-foamed rubber composite particles for the sewage treatment prepared by the invention effectively overcome the defect of difficulty in cleaning water surface due to extensive adsorption in the prior art. Furthermore, the advantage of the aerogel-foamed rubber composite particles is further reflected in that adsorbed and recovered oil stains can be squeezed to be removed due to the elasticity of foamed rubber so as to be recycled.

Description

technical field [0001] The invention relates to an airgel-foam rubber composite particle used for sewage treatment and a preparation method thereof, belonging to the technical field of water pollution treatment agents. Background technique [0002] Oily pollutants in water mainly come from oily wastewater. When there is a little more oil in the water body, a layer of oil film will be formed on the water surface, which will isolate the atmosphere from the water surface, destroy the normal oxygenation conditions, and cause the water body to lack oxygen; the oil film can also attach to the gills of the fish, causing the fish to suffocate and die. During the fish spawning period, most of the fry hatched in the wastewater containing oily pollutants are deformed, with low vitality and easy to die. When the oil content in the water body reaches 0.01mg / L, the fish meat will have a special smell and cannot be eaten. Oil-containing pollutants also have an impact on plants, hindering...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08J9/40C02F1/28C02F1/40C08L9/02
CPCC02F1/285C02F1/40C08J9/008C08J9/28C08J9/40C08J2309/02C08J2471/02C08K3/36
Inventor 陈庆曾军堂
Owner CHENDU NEW KELI CHEM SCI CO LTD
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