Acrylic acid macroscopic adsorptive resin for removing organic matter in solution and production method thereof

A technology of pore adsorption and acrylic acid, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of insignificant adsorption effect of macromolecular organic matter humic acid and fulvic acid, difficulty in removable ion exchange, loss of ion exchange function, etc. , to achieve good effluent water quality, high organic matter removal rate and good effluent repeatability

Inactive Publication Date: 2009-04-29
ZHEJIANG ZHENGGUANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Domestic research on adsorption resins mostly focuses on styrene-based macroporous adsorption resins. The disadvantages are: first, it will cause "poisoning" during use, that is, after a period of use, it will lose its ion exchange function. , this is due to the copolymerization characteristics of styrene and divinylbenzene; second, during the copolymerization process, since the self-polymerization rate of divinylbenzene is greater than that of copolymerization with styrene, the divinyl that enters the copolymer at the initial stage of polymerization The proportion of benzene units is relatively high, and in the later stage of polymerization, divinylbenzene monomer has been basically consumed, and the reaction is mainly the self-polymerization of styrene
During regeneration, due to the structure of sparse outside and dense inside, larger ions will be stuck in the molecular gap, and it is difficult to exchange with mobile ions, and eventually lose the exchange function, resulting in resin "poisoning" and poor adsorption to organic matter. The adsorption effect on macromolecular organic substances humic acid and fulvic acid is not obvious

Method used

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  • Acrylic acid macroscopic adsorptive resin for removing organic matter in solution and production method thereof
  • Acrylic acid macroscopic adsorptive resin for removing organic matter in solution and production method thereof
  • Acrylic acid macroscopic adsorptive resin for removing organic matter in solution and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: with reference to attached figure 1 . Method for producing acrylic macroporous adsorbent resin for removing organic matter in solution,

[0041] (1) Production process of acrylic white ball:

[0042]

[0043] Put 200# gasoline, methyl acrylate, divinylbenzene and initiator BPO into No. I mixing tank for stirring, raise the temperature to 40°C, put them into No. Put water and dispersant in the reaction kettle for mixing reaction, then put them into the polymerization kettle for polymerization reaction, react for 10 hours, the reaction produces white balls with different diameters, and after being washed with water, enter the filter for filtration, and dry the filtered white balls , sieve to get the desired white ball.

[0044] (2) Production process of acrylic macroporous adsorption resin:

[0045]

[0046] Put the white ball and polyethylene polyamine into the amidation kettle, stir, heat up to 100°C-165°C for 20 hours, discharge the tail gas, dr...

Embodiment 2

[0057] Embodiment 2: acrylic acid macroporous adsorption resin test comparison: the test device adopts two exchangers, wherein, the inner diameter of the exchanger is 37cm, and the height is 150cm; It is the clean water treated by the water station; the operation of the two exchangers adopts downstream operation, and the operating flow rate is 10m / h; the regeneration of the acrylic macroporous adsorption resin is downstream regeneration, the regeneration flow rate is 4m / h, and the amount of regenerant is 4BV; the determination method for organic matter is potassium permanganate method, the organic matter content of the influent water and the effluent water of activated carbon and acrylic macroporous adsorption resin are tested, and the regenerated effluent is tested, and the adsorption rate and adsorption capacity are calculated according to the test results , elution rate and periodic water production.

[0058] Outlet water quality testing:

[0059] 1. The determination meth...

Embodiment 3

[0077] Embodiment 3: the regeneration performance of acrylic acid macroporous adsorption resin:

[0078] 1. Different regeneration concentration tests: According to the previous test results, a flow rate of 20.4m / h was selected for different regeneration concentration tests. Regeneration test: Regeneration test with different concentrations of regeneration solutions (changing NaCl and NaOH concentrations). Divided into six groups of experiments, the six groups of experiments only have different regeneration conditions, and the other operating conditions are the same. The concentration of the regeneration agent in the six groups of experiments is as follows: (1) 2% NaCl+1% NaOH; (2) 2% NaCl+2% NaOH; (3) 4% NaCl+1% NaOH;

[0079] (4) 4% NaCl+2% NaOH; (5) 6% NaCl+1% NaOH; (6) 6% NaCl+2% NaOH;

[0080] The water in this test is tap water, and the conductivity of the tap water is 240-270μs / cm. Analyze the E of the resin in and out of the water every day 260 (Wavelength 254nm ul...

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Abstract

The invention relates to an acrylic acid macroporous adsorption resin and a production method used for effectively removing the organic compounds in aqueous solution and nonaqueous solution. Owing to the special aperture and a framework with net-shaped structure, the acrylic acid macroporous adsorption resin has the advantages of high adsorption capability, high removal rate, high washout rate and the like on the organic compounds in aqueous solution and nonaqueous solution.

Description

technical field [0001] The invention relates to an acrylic macroporous adsorption resin capable of effectively removing organic matter in aqueous solution and non-aqueous solution and a production method thereof, belonging to the field of macroporous resin manufacture. Background technique [0002] With the rapid development of industry and the improvement of people's living standards, more and more industrial wastewater and domestic sewage are produced, resulting in more and more serious water pollution. The main feature of water quality deterioration is the increase of dissolved organic matter in water. The increase of organic matter content in natural water has brought great harm to industrial water and civil domestic water. How to remove organic matter in water has become an urgent problem to be solved in industrial water and tap water treatment. [0003] After the natural water is polluted, the organic matter in the water is very complex, including natural organic matt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26C08F220/14C08F8/32C08F8/44
Inventor 沈建华钟轶泠徐斌修慧敏
Owner ZHEJIANG ZHENGGUANG IND
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