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Process for regenerating of in-situ electricity of adsorption resin

An adsorption resin and electric regeneration technology, applied in electric regeneration, filter regeneration, petroleum industry, etc., can solve the problems of high cost, high cost, and no comprehensive utilization value of high-concentration waste liquid, so as to reduce regeneration cost and simplify regeneration The effect of craft

Inactive Publication Date: 2007-08-01
NANJING UNIV
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  • Summary
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional acid, alkali or organic solvent desorption methods are not only costly, but also the high-concentration waste liquid obtained by desorption has no comprehensive utilization value and must be disposed of by incineration or safe landfill, which is expensive and severely limits resin adsorption. Popularization and Application of Technology in Wastewater Treatment

Method used

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  • Process for regenerating of in-situ electricity of adsorption resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0017] The cation exchange membrane adopts polyethylene heterogeneous cation exchange membrane (3361BW type produced by Shanghai Shanghua Water Treatment Material Co., Ltd.) to roll into a column with a diameter d of 30mm and a height h of 250mm, and is filled with NKA-2 macroporous adsorption resin ( Tianjin Nankai University chemical plant) 0.14kg. A thorny anode is installed in the resin bed, and the material is titanium base coated with ruthenium (produced by Henan Xinxiang Future Water Chemical Co., Ltd.), and the cationic exchange membrane is covered with a cathode, and the material is a titanium plate.

[0018] The adsorption resin is used to treat phenol-containing wastewater, the phenol concentration is 430 mg / l, and the chromaticity is 200 times. Resin treated wastewater 20BV, the average concentration of phenol in the effluent is 1.6mg / l, and the adsorption removal rate is 99.63%. Then in situ electrical regeneration is performed.

[0019] The anode regeneration s...

Embodiment B

[0022] The anion exchange membrane is made of polyethylene homogeneous anion exchange membrane (3362BW type produced by Shanghai Shanghua Water Treatment Material Co., Ltd.) rolled into a column with a diameter d of 50mm and a height h of 400mm, and is filled with non-polar macroporous adsorption resin (Tianjin Nankai University Chemical Factory produces H103 type) 0.6kg. A thorn-like anode is installed in the resin bed, and the material is titanium-based coating iridium (produced by Henan Xinxiang Future Water Chemical Co., Ltd.), and the anion exchange membrane is covered with a cathode, and the material is stainless steel.

[0023] The adsorption resin is used to treat aniline-containing wastewater, the aniline concentration is 360 mg / l, and the chromaticity is 140 times. Resin treated wastewater 20BV, average effluent aniline concentration 9mg / l, adsorption removal rate 97.5%. Then in situ electrical regeneration is performed.

[0024] The anode regeneration solution is ...

Embodiment C

[0027] The cation exchange membrane adopts polyethylene heterogeneous cation exchange membrane (3361BW type produced by Shanghai Shanghua Water Treatment Material Co., Ltd.) to roll into a column with a diameter d of 50mm and a height h of 400mm, and is filled with non-polar macroporous adsorption resin ( Tianjin Nankai University chemical plant) 0.6kg. A thorn-like anode is installed in the resin bed, and the material is titanium-based coating iridium (produced by Henan Xinxiang Future Water Chemical Co., Ltd.), and the cationic exchange membrane is covered with a cathode, and the material is stainless steel.

[0028] Using this adsorption resin to treat tricyclazole process wastewater, the COD is 19542 mg / l. Resin treated wastewater 12BV, average effluent COD2610mg / l, adsorption removal rate 86.64%. Then in situ electrical regeneration is performed.

[0029] The anode regeneration solution is 10% sodium chloride solution, neutral, temperature 60°C, flow rate 1BV / h, DC elec...

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Abstract

A original position electricity regeneration process of adsorbing resin, it wraps the adsorbing resin with cylinder-shaped ion exchange membrane, the adsorbing resin is equipped with anodic in itself and the outer of ion exchange membrane is installed cathode, the two sides of adsorbing resin bed layer are equipped with pore plate to prevent resin leak; after the adsorption of adsorbing resin reaches saturation, the adsorbing resin bed layer is injected with anodic regeneration liquid and the outer of ion exchange membrane is injected with cathode recycle liquid, then the anode and cathode is connected with DC, the organic pollutants absorbed by adsorbing resin is dissociated to make adsorbing resin regenerate and recovery adsorption capacity. The original position electricity regeneration process of adsorbing resin in the invention does not consume and treat the resin regeneration eluent of acid, alkali or organic solvents, reduces the regeneration costs of adsorption resin greatly and simplifies the regeneration process.

Description

technical field [0001] The present invention relates to the regeneration of adsorption resins. Background technique [0002] As a new wastewater treatment technology, resin adsorption technology has been gradually applied to the recycling of useful substances in various types of high-concentration organic wastewater. However, there are many types of pollutants in fine chemical wastewater such as pharmaceutical intermediates, pesticide intermediates, and dye intermediates. The concentration is low, and various adsorption resins can be used to separate it, so as to facilitate the subsequent treatment and standard discharge of wastewater. However, the conventional acid, alkali or organic solvent desorption methods are not only costly, but also the high-concentration waste liquid obtained by desorption has no comprehensive utilization value and must be disposed of by incineration or safe landfill, which is expensive and severely limits resin adsorption. The popularization and a...

Claims

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Application Information

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IPC IPC(8): B01J20/34B01J20/26B01J49/30
Inventor 赵玉明徐泽林陶阳宇
Owner NANJING UNIV
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