A kind of flocculant containing microcapsules and preparation method thereof

A technology of microcapsules and flocculants, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problems of low yield, limited application conditions and high cost of microbial flocculants, and achieve Efficient and rapid flocculation effect, increase production and reduce cost

Active Publication Date: 2021-01-26
NANJING YUSHUI SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, microbial flocculants have the disadvantages of low yield and high cost, and the application conditions are limited. The idea of ​​using microcapsules containing live bacteria as an important component of flocculants, supplemented by other inorganic, organic, environmentally friendly and low-cost raw materials has not yet been developed. According to reports, if this idea is realized, it will be able to solve the above-mentioned problems faced by microbial flocculants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] Preparation of simulated wastewater: add 250mg of glucose, 1.5mg of ferric chloride, 150mg of ammonium sulfate, 120mg of soybean oil, 20mg of potassium dihydrogen phosphate, 50mg of chloroform, and 30mg of toluene into each liter of deionized water, and use a homogenizer at a speed of 7250 to 7750rpm Homogenize for 15-20 minutes to obtain simulated wastewater.

[0027] Flocculation performance test: add the flocculant containing microcapsules to the simulated wastewater at the dosage of 100mg / L, stir at a speed of 125-175rpm for 4-6min, let it stand for 1.5h, and measure the COD of the treated supernatant , compared with the COD value of the original simulated wastewater, the COD removal rate was calculated.

[0028] Photocatalytic effect test: The photocatalytic effect of the flocculant containing microcapsules was tested by the bottle test method: the absorbance of chloroform and toluene in the simulated wastewater was measured at a wavelength of 225nm by using a UV-v...

Embodiment 1

[0032] In terms of parts by mass, add 21 parts of deionized water and 3 parts of glycerol into the container, and heat it to 35°C, then add 4.75 parts of thermostable oleophilus (3 parts of alkanophagous content, 3 parts of marine spirulina content 1.75 parts) of the dormant body was added therein and stirred evenly to obtain the capsule core solution;

[0033] Add 8.75 parts of hardened oil into another container, and heat it to 50°C, and obtain the cyst wall solution after it is completely dissolved;

[0034]Slowly add the capsule wall solution to the capsule core solution, and use a high-speed mixer to stir at a speed of 1920 rpm for 5 minutes to obtain a wall material and core material dispersion mixture with an average particle size of 5 μm;

[0035] Add 850 parts of simethicone oil to another container and heat it to 50°C. Slowly add the dispersion mixture of wall material and core material and 1.25 parts of sucrose fatty acid ester into the simethicone oil at a speed of...

Embodiment 2

[0040] In terms of parts by mass, add 21 parts of deionized water and 3 parts of glycerol into the container, and heat it to 35°C, then add 4.75 parts of thermostable oleophilus (3 parts of alkanophagous content, 3 parts of marine spirulina content 1.75 parts) of the dormant body was added therein and stirred evenly to obtain the capsule core solution;

[0041] Add 8.75 parts of hardened oil into another container, and heat it to 50°C, and obtain the cyst wall solution after it is completely dissolved;

[0042] Slowly add the capsule wall solution to the capsule core solution, and use a high-speed mixer to stir at a speed of 1920 rpm for 5 minutes to obtain a wall material and core material dispersion mixture with an average particle size of 5 μm;

[0043] Add 850 parts of simethicone oil to another container and heat it to 50°C. Slowly add the dispersion mixture of wall material and core material and 1.25 parts of sucrose fatty acid ester into the simethicone oil at a speed o...

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Abstract

The invention discloses a flocculant containing microcapsules and a preparation method thereof; wherein, a flocculant containing microcapsules is characterized in that it comprises the following raw materials in parts by weight, and contains 28 to 42 parts of oleophilic bacteria microcapsules , 6-10.5 parts of polyethylene oxide, 5-8.75 parts of bauxite, 2-3.5 parts of oxidized starch, 3-4.5 parts of lignosulfonate; a preparation method of a flocculant containing microcapsules, which comprises, Slowly add 6-10.5 parts of polyethylene oxide, 2-3.5 parts of oxidized starch, and 3-4.5 parts of lignosulfonate into 140-165 parts of deionized water, stir at a speed of 320-340rpm for 15-25min while adding, and Heat to 35°C, and slowly add 28-42 parts of oleophilic microcapsules and 5-8.75 parts of bauxite to it after it is completely dissolved, stir at a speed of 105-135rpm for 28-32min while adding, and then adjust the speed To 60 ~ 90rpm and continue to stir for 2h, at this time the water has evaporated, that's it. The invention only exerts the function of catabolism when it is used, greatly reduces the cost of the microbial flocculant, and improves its output.

Description

technical field [0001] The invention belongs to the technical field of water treatment agents, and more specifically relates to a flocculant containing microcapsules and a preparation method thereof. Background technique [0002] Microbial flocculant is a kind of metabolites produced by microorganisms or their secretions. It is obtained by fermentation, extraction and refining of microorganisms such as bacteria and fungi by using microbial technology. Toxic, non-secondary pollution water treatment agent. Because microbial flocculants can overcome the inherent defects of inorganic polymers and synthetic organic polymer flocculants, and finally achieve pollution-free discharge, the research of microbial flocculants is becoming an important topic in the research of flocculants in the world today. [0003] However, microbial flocculants have the disadvantages of low yield and high cost, and the application conditions are limited. The idea of ​​using microcapsules containing liv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F101/30C02F101/20
CPCC02F1/32C02F3/34C02F2101/20C02F2101/30C02F2101/308
Inventor 刘水平
Owner NANJING YUSHUI SCI & TECH
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