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A kind of preparation method of the reticular polyurethane microbial carrier adding modified montmorillonite

A microbial carrier, montmorillonite technology, which is applied in the treatment of granular microbial carriers, chemical instruments and methods, biological water/sewage treatment, etc. The problem of slow film hanging speed, etc., achieves the effect of good bioaffinity, improved nitrification reaction rate, and fast film hanging speed.

Active Publication Date: 2018-06-12
青岛水务集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, simple polymer biocarrier fillers have poor hydrophilicity and bioadhesion, which leads to slow microbial film formation, reduces sewage treatment efficiency, and has poor hydrolysis and microbial degradation resistance, short service life, and high cost of use. Relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of the reticular polyurethane microbial carrier that adds modified montmorillonite of the present embodiment may further comprise the steps:

[0031] Step 1: 10 parts of vinyl polyoxypropylene polyol vinyl polyethylene oxide polyol, 80 parts of ethylene glycol polyether polyol, H 2 Add 5 parts of O, 1 part of silicone oil, 0.1 part of tin catalyst stannous octoate, 0.3 part of amine catalyst triethylenediamine, and 20 parts of olefin monomer styrene into the reaction kettle, stir evenly; add 0.2 part of modified montmorillonite , stirred evenly, and kept warm to 40 ° C, as component 1; the above-mentioned parts are parts by mass;

[0032] Step 2: Add 125 parts of diphenylmethane diisocyanate (MDI) and 0.08 part of free radical polymerization initiator benzoyl peroxide (BPO) into the reactor, stir evenly, and use it as component 2; the above-mentioned parts are parts by mass ;

[0033] Step 3: Mix component 1 and component 2, stir evenly, pour in...

Embodiment 2

[0036] The preparation method of the reticular polyurethane microbial carrier that adds modified montmorillonite of the present embodiment may further comprise the steps:

[0037] Step 1: 15 parts of vinyl polyethylene oxide polyol, 100 parts of ethylene glycol tetrahydrofuran polyether polyol, 10 parts of adipic acid polyester polyol, H 2 Add 6 parts of O, 2 parts of silicone oil, 0.15 parts of tin catalyst stannous octoate, 0.5 parts of amine catalyst triethylenediamine, and 15 parts of olefin monomer styrene into the reaction kettle, stir evenly; add 0.5 parts of modified montmorillonite , stirred evenly, and kept warm to 40 ° C, as component 1; the above-mentioned parts are parts by mass;

[0038] Step 2: Add 130 parts of diphenylmethane diisocyanate (MDI) and 0.06 parts of free radical polymerization initiator azobisisobutyronitrile into the reaction kettle, stir evenly, and use it as component 2; the above-mentioned parts are parts by mass;

[0039] Step 3: Mix componen...

Embodiment 3

[0042] The preparation method of the reticular polyurethane microbial carrier that adds modified montmorillonite of the present embodiment may further comprise the steps:

[0043] Step 1: 5 parts of vinyl polyethylene oxide polyol, 70 parts of oxypropylene polyether polyol, 30 parts of aromatic polyester polyol, H 2 8 parts of O, 2 parts of silicone oil, 0.05 part of tin catalyst dibutyltin dilaurate, 0.8 part of amine catalyst triethylamine, and 5 parts of olefin monomer divinylbenzene were added to the reaction kettle, and stirred evenly; Active montmorillonite, stirred evenly, and kept warm to 35 ° C, as component 1; the above-mentioned parts are parts by mass;

[0044] Step 2: Add 120 parts of diphenylmethane diisocyanate (MDI) and 0.01 part of free radical polymerization initiator benzoyl peroxide (BPO) into the reactor, stir evenly, as component 2; the above-mentioned parts are parts by mass ;

[0045] Step 3: Mix component 1 and component 2, stir evenly, pour into a mol...

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Abstract

The invention belongs to the technical field of microbial carrier preparation methods and relates to a preparation method of a modified montmorillonite-containing reticulated polyurethane microbial carrier with an interpenetrated network structure. The preparation method comprises adding vinyl polyether polyol, polyether polyol, polyester polyol, H2O, silicone oil, a tin catalyst, an amine catalyst and an olefin monomer into a reactor, carrying out stirring to obtain a uniform mixture, adding modified montmorillonite into the mixture, carrying out stirring to obtain a uniform mixture, carrying out thermal insulation, wherein the mixture is used as a component 1, adding isocyanate and a free radical polymerization initiator into a reactor, carrying out stirring to obtain a uniform mixture as a component 2, mixing the component 1 and the component 2 to obtain a uniform mixture, carrying out foaming to obtain polyurethane flexible foam and carrying out meshing treatment on the polyurethane flexible foam through an alkali liquor immersion or explosion method to obtain the reticulated polyurethane microbial carrier with an interpenetrated network structure. The olefin polymer is introduced into the reticulated polyurethane microbial carrier through the interpenetrated network structure so that hydrolysis resistance and biodegradation resistance of the carrier are improved and compatibility of the polyurethane ingredient and the olefin polymer ingredient is improved.

Description

technical field [0001] The invention belongs to the technical field of microbial carrier preparation methods, and in particular relates to a method for preparing a reticular polyurethane microbial carrier with an interpenetrating network structure added with modified montmorillonite. Background technique [0002] With the rapid development of my country's industry and agriculture and the continuous acceleration of urbanization, urban domestic sewage treatment has become the primary problem to be solved in order to realize the sustainable development of my country's economy and society and build an ecologically harmonious homeland. Biological sewage treatment technology represented by activated sludge has been widely used in the treatment of urban and industrial sewage. However, the traditional activated sludge technology needs to be further improved in terms of reducing the total nitrogen in the effluent of the sewage plant, and the large amount of excess sludge produced at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/40C08J9/38C08G18/76C08G18/63C08G18/48C08G18/42C08K9/04C08K9/02C08K3/34C02F3/30
CPCC02F3/301C02F2003/001C08F283/065C08G18/4072C08G18/632C08G18/7671C08G2270/00C08J9/38C08J9/40C08J2375/06C08J2375/08C08G2110/0008C08G2110/0083C08F212/08C08F212/36
Inventor 迟文浩薛欣喜冯海燕张明霞
Owner 青岛水务集团有限公司