Modified polyurethane carrier and preparation method thereof

A polyurethane and polyurethane foam technology, applied in chemical instruments and methods, natural water treatment, water treatment parameter control, etc., can solve the problems of poor adsorption, poor anti-toxic shock resistance, poor fluidization, etc., to reduce inhibition, promote electronic Conduction, the effect of increasing volume load

Active Publication Date: 2021-06-29
无锡映川环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a modified polyurethane carrier and its preparation method, which can solve the problem of small specific surface area, poor adsorption, poor impact resistance to toxicity, The technical problems of poor fluidity and the inability to simultaneously realize the nitrification and denitrification functions

Method used

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  • Modified polyurethane carrier and preparation method thereof
  • Modified polyurethane carrier and preparation method thereof
  • Modified polyurethane carrier and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A modified polyurethane carrier, which is prepared by the following method steps: S1, preparing a coating modification solution, and S2, preparing a modified polyurethane carrier.

[0040] S1. Preparation of coating modification solution:

[0041] (1) Mix 35 grams of wood powder activated carbon (200 mesh), 5.5 grams of hollow glass microspheres (C20), 0.2 grams of multivitamins, 1.5 grams of riboflavin, 1.0 grams of L-cysteine, and 1.5 grams of reduced iron powder , 1.0g sodium carboxymethyl cellulose, mixed uniformly in a mixer to obtain a modified dry powder mixture;

[0042] (2) Pour the modified dry powder mixture into 350 grams of tap water, add 0.5 grams of silicone wetting agent, and mix well to obtain a mixed slurry;

[0043] (3) Add 15 grams of acrylic emulsion to the mixed slurry, mix and stir evenly to obtain a coating modification solution.

[0044] S2, preparation of modified polyurethane carrier:

[0045] (1) Cut the porous polyurethane foam with a voi...

Embodiment 2

[0063] A modified polyurethane carrier, which is prepared by the following method steps: S1, preparing a coating modification solution, and S2, preparing a modified polyurethane carrier.

[0064] S1. Preparation of coating modification solution:

[0065] (1) 36.0 grams of coconut shell powder activated carbon (325 mesh), 6.0 grams of hollow glass microspheres (C20), 0.2 grams of multivitamins, 1.0 grams of riboflavin, 1.0 grams of L-cysteine, 1.2 grams of reduced iron Powder, 0.8g sodium carboxymethyl cellulose, mix homogeneously in mixer, obtain modified dry powder mixture;

[0066] (2) Pour the modified dry powder mixture into 320 grams of tap water, add 0.5 grams of silicone wetting agent, mix thoroughly and evenly, and obtain a mixed slurry;

[0067] (3) Add 20 grams of acrylic emulsion to the mixed slurry, mix and stir evenly to obtain a coating modification solution.

[0068] S2, preparation of modified polyurethane carrier:

[0069] (1) Cut the porous polyurethane fo...

Embodiment 3

[0079] A modified polyurethane carrier, which is prepared by the following method steps: S1, preparing a coating modification solution, and S2, preparing a modified polyurethane carrier.

[0080] S1. Preparation of coating modification solution:

[0081] (1) 40 grams of coconut shell powder activated carbon (200 mesh), 7.5 grams of hollow glass microspheres (C20), 0.2 grams of multivitamins, 1.8 grams of riboflavin, 1.2 grams of L-cysteine, 0.6 grams of reduced iron powder , 0.8g sodium carboxymethylcellulose, mixed uniformly in a mixer to obtain a modified dry powder mixture;

[0082] (2) Pour the modified dry powder mixture into 360 grams of tap water, add 0.5 grams of silicone wetting agent, and mix well to obtain a mixed slurry;

[0083] (3) Add 16 grams of acrylic emulsion to the mixed slurry, mix and stir evenly to obtain a coating modification solution.

[0084] S2, preparation of modified polyurethane carrier:

[0085] (1) Cut the porous polyurethane foam with a voi...

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Abstract

The invention provides a modified polyurethane carrier and a preparation method thereof, and aims to solve the technical problems of small specific surface area, poor adsorbability, poor toxicity impact resistance, poor fluidization property after biofilm formation and the like of the existing suspension carrier. The preparation method of the modified polyurethane carrier is characterized by comprising the following steps: S1, preparation of a coating modification liquid: mixing the following raw materials in parts by weight: 30 to 50 parts of powdered activated carbon, 3.0 to 8.0 parts of hollow glass micro-beads, 0.5 to 1.5 parts of riboflavin, 0.5 to 2.0 parts of L-cysteine, 1.0 to 3.0 parts of reduced iron powder, 1 to 4 parts of sodium carboxymethyl cellulose, 200 to 450 parts of water, 0.5 to 2.0 parts of an organic silicon wetting agent, and 8 to 20 parts of acrylic emulsion. and S2, preparation of a modified polyurethane carrier: infiltrating the outer surface and the inner hole surface of porous polyurethane foam with the coating modification liquid, and curing to obtain the modified polyurethane carrier.

Description

technical field [0001] The invention relates to a suspension carrier used for sewage treatment, in particular to a modified polyurethane carrier and a preparation method thereof. Background technique [0002] With the development of my country's economy, the problem of water pollution is becoming more and more serious, and the discharge standards of pollutants from sewage plants are also becoming more and more serious. [0003] The higher it is, the upgrading of sewage treatment standards is imperative. Generally, when urban sewage treatment plants are put into use, the inflow of sewage is often lower than the designed treatment capacity due to the immature pipe network. After operation, the amount of sewage inflow may exceed the design treatment capacity. At this time, the sewage treatment plant needs to be expanded and transformed, and the expansion and transformation of the standard will become the main problem faced by my country's urban sewage treatment plants. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C09D133/00C09D7/61C09D7/63C02F3/10C02F1/28C02F103/32C02F101/36C02F101/34C02F101/38C08L75/04
CPCC08J9/42C09D133/00C09D7/61C09D7/63C09D7/70C02F3/108C02F1/288C02F2209/08C02F2209/14C02F2209/16C02F2101/308C02F2103/325C02F2101/322C02F2101/36C02F2101/345C02F2101/38C08J2375/04C08K2003/0856C08L1/286C08K13/04C08K7/28C08K7/24C08K3/08C08K5/3725Y02W10/10
Inventor 纪群夏冬香
Owner 无锡映川环境技术有限公司
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