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A kind of emulsion for coating water treatment filler based on microbial fermentation broth and its preparation and use method

A microbial fermentation liquid and water treatment technology, applied in the field of water treatment, can solve the problems of poor biological affinity, great impact on water quality, and high production costs, and achieve the effects of avoiding organic pollution, high production operability, and reduced production costs

Inactive Publication Date: 2021-10-22
TIANJIN GREENBIO MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a microbial fermentation liquid-based emulsion for coating water treatment fillers and a preparation and use method to solve the problem that traditional carbon sources in the prior art have a large impact on water quality, and the use of PHA-type slow-release carbon The high cost of source production and the poor biocompatibility of traditional plastic fillers lead to low processing efficiency.

Method used

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  • A kind of emulsion for coating water treatment filler based on microbial fermentation broth and its preparation and use method
  • A kind of emulsion for coating water treatment filler based on microbial fermentation broth and its preparation and use method
  • A kind of emulsion for coating water treatment filler based on microbial fermentation broth and its preparation and use method

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Add 1 L of poly-3-hydroxybutyrate microbial fermentation broth (stock solution dry weight 10%), add an equal volume of 1 L deionized water to wash, and stir at 25° C. for 0.5 h. After the stirring, the mixture was centrifuged in a centrifuge at a speed of 3000r / min for 5min at a centrifugation temperature of 25°C, and the supernatant was removed to obtain a centrifuged solid phase with a dry weight of 31%.

[0040] Add 100ml of deionized water to the centrifuged solid phase, stir at 25°C for 0.5h, heat to 40°C, add sodium hydroxide solution and sodium phosphate to adjust the pH to 9-10, add 0.4g of sodium lauryl sulfate , 1g calcium carbonate, add 1ml soybean oil to defoam when bubbles appear. Stir at a constant temperature of 40° C. for 1 h, and add sulfuric acid solution to adjust the pH=7. Add 0.05 g of thickener methyl cellulose to adjust the viscosity of the biological fermentation emulsion, and control the viscosity to 15-30 Pa·s. Add 1 g of preservative formald...

Embodiment 2

[0043] Add 1 L of poly-3-hydroxybutyrate-3-hydroxyvalerate microbial fermentation broth (stock solution dry weight 12%), add an equal volume of 1 L deionized water, and stir at 30° C. for 0.5 h. After the stirring, the mixed liquid was centrifuged in a centrifuge at a speed of 3000 r / min for 8 min, and the supernatant was removed to obtain a centrifuged solid phase with a dry weight of 38%.

[0044] Add 150ml of deionized water to the centrifuged solid phase, stir at 30°C for 0.5h, and heat to 45°C. Add sodium hydroxide and sodium phosphate to adjust pH=9 to 10, add 1g sodium dodecylsulfonate, 0.5g talcum powder, 0.1g borax, and add 1ml soybean oil to defoam when bubbles appear. Stir at a constant temperature of 45°C for 1 h, and add sulfuric acid to adjust the pH to 7. Adding 0.2 g thickener starch to adjust the viscosity of the biological fermentation emulsion to 15-30 Pa·s. Add 1.5 g of preservative formaldehyde, and stir at 45° C. for 0.5 h to prepare poly-3-hydroxybutyr...

Embodiment 3

[0047] Add 1 L of poly-3-hydroxybutyrate-4-hydroxybutyrate microbial fermentation broth (stock liquid dry weight 8%), add an equal volume of 1 L deionized water, and stir at 30° C. for 0.5 h. After the stirring, the mixture was centrifuged in a centrifuge at a speed of 3500 r / min for 8 min, and the supernatant was removed by centrifugation to obtain a centrifuged solid phase with a dry weight of 30%.

[0048] Add 80ml of deionized water to the centrifuged solid phase, stir at 30°C for 0.5h, and heat to 50°C. Ammonia water and sodium phosphate were added to adjust the pH=8 to 9, and 5 g of sodium stearate and 2 g of talcum powder were added. When bubbles appear in the emulsion, add 0.1 g of silicone defoaming liquid to defoam. Stir at a constant temperature of 50° C. for 2 h, and add sulfuric acid to adjust the pH to 7. Add 0.02g of viscosifier hydroxyethyl cellulose to control the viscosity to 2.5-5Pa·s. Add 0.5 g of preservative sodium acetate, and continue to stir at 50° ...

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Abstract

The invention provides an emulsion for coating water treatment filler based on microbial fermentation liquid and a preparation and use method, wherein the emulsion is prepared from PHA microbial fermentation liquid. The emulsion for coating water treatment filler based on the microbial fermentation liquid of the present invention directly uses the microbial fermentation liquid of polyhydroxyalkanoate as the base material, and after appropriate modification, it is directly coated on the surface of the filler to form a film, which solves the problem of polyhydroxyalkanoate. The high cost of hydroxyalkanoate as a slow-release carbon source and the poor biocompatibility on the surface of traditional fillers; the use of microbial fermentation broth as a material for coating fillers can not only ensure rapid processing effects, but also greatly reduce production costs and avoid The problem of organic matter pollution caused by traditional carbon sources has extremely high cost performance and operability; at the same time, according to different use environments, by adjusting the concentration of microbial fermentation broth, the adhesion amount on the surface of water treatment fillers can be easily controlled, which has high production efficiency. operability.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an emulsion for coating water treatment filler based on microbial fermentation broth and a preparation and use method thereof. carbon source. Background technique [0002] With the development of industry and the improvement of human life, surface water such as river water and lake water has been polluted to varying degrees. At present, in the biological purification treatment of urban sewage and industrial sewage, the use of biological fillers and the control of carbon sources are the core of sewage biological treatment technology. At present, liquid organic carbon such as methanol, ethanol, and glucose is generally used as carbon sources in sewage treatment. However, the large consumption of these carbon sources and the difficulty in controlling the dosage lead to high operating costs. Insufficient or excessive addition of carbon sources will result, affec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/10C02F3/00
CPCC02F3/00C02F3/10C02F2203/006Y02W10/10
Inventor 胡文艳张业刚叶瑾侯哲丁巧巧
Owner TIANJIN GREENBIO MATERIAL CO LTD
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