Recovery treatment device and method for methanol-containing alkaline resin desorption liquid

A basic resin, recycling and treatment technology, applied in multi-stage water treatment, water/sewage treatment, water treatment parameter control and other directions, can solve the problems of high cost and high energy consumption, and achieve low equipment cost, low energy consumption, compact effect

Active Publication Date: 2018-11-30
NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problems in the prior art that methanol is extracted by rectification and high-concentration desorption liquid is processed by incineration, the energy consumption is high and the cost is high, the present invention provides a recovery treatment device and method for methanol-containing alkaline resin desorption liquid

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  • Recovery treatment device and method for methanol-containing alkaline resin desorption liquid
  • Recovery treatment device and method for methanol-containing alkaline resin desorption liquid

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Embodiment 1

[0044] The recycling and processing device of a methanol-containing alkaline resin desorption liquid used in this embodiment includes a vacuum membrane distillation system connected in sequence for separating methanol in the basic resin desorption liquid, and a vacuum membrane distillation system for separating sodium hydroxide. Homogeneous membrane electrodialysis systems, and wet catalytic oxidation systems for treating organic pollutants.

[0045] The content of methanol in the desorption liquid used in this embodiment is 10%, the content of sodium hydroxide is 6%, and the COD is 10000mg / L.

[0046] like figure 1 Shown, a kind of recovery processing method that contains methanol basic resin desorption liquid, comprises the following steps:

[0047] (1) Use a vacuum membrane distillation system to separate methanol in the basic resin desorption solution:

[0048] The methanol-containing alkaline resin desorption liquid flows into the vacuum membrane distillation system, wh...

Embodiment 2

[0055] The recycling and processing device of a methanol-containing alkaline resin desorption liquid used in this embodiment includes a vacuum membrane distillation system connected in sequence for separating methanol in the basic resin desorption liquid, and a vacuum membrane distillation system for separating sodium hydroxide. Homogeneous membrane electrodialysis systems, and wet catalytic oxidation systems for treating organic pollutants.

[0056] The content of methanol in the desorption liquid used in this embodiment is 40%, the content of sodium hydroxide is 0.5%, and the COD is 25000mg / L.

[0057] like figure 1 Shown, a kind of recovery processing method that contains methanol basic resin desorption liquid, comprises the following steps:

[0058] (1) Use a vacuum membrane distillation system to separate methanol in the basic resin desorption solution:

[0059] The methanol-containing alkaline resin desorption liquid flows into the vacuum membrane distillation system, ...

Embodiment 3

[0066] The recycling and processing device of a methanol-containing alkaline resin desorption liquid used in this embodiment includes a vacuum membrane distillation system connected in sequence for separating methanol in the basic resin desorption liquid, and for separating sodium hydroxide The homogeneous membrane electrodialysis system, and the wet catalytic oxidation system for the treatment of organic pollutants.

[0067] The content of methanol in the desorption liquid used in this embodiment is 60%, the content of sodium hydroxide is 3%, and the COD is 50000mg / L.

[0068] like figure 1 Shown, a kind of recovery processing method that contains methanol basic resin desorption liquid, comprises the following steps:

[0069] (1) Use a vacuum membrane distillation system to separate methanol in the basic resin desorption solution:

[0070] The methanol-containing alkaline resin desorption liquid flows into the vacuum membrane distillation system, which uses a microporous me...

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Abstract

The invention discloses a recovery treatment device and method for a methanol-containing alkaline resin desorption liquid, and belongs to the field of resin desorption liquid regeneration. The methodcomprises the following steps: (1) treating the desorption solution by adopting a vacuum membrane distillation method to separate out methanol; (2) separating sodium hydroxide in the desorption solution subjected to methanol recovery by adopting a homogeneous membrane electrodialysis method, and concentrating the obtained sodium hydroxide solution to meet a recycling requirement; and (3) reducingchemical oxygen demand (COD) and increasing a B / C ratio of organic wastewater in a dilution chamber of a homogeneous membrane electrodialysis system by adopting wet catalytic oxidation, and then carrying out further treatment by using a biochemical system. The method provided by the invention is low in energy consumption, the recovery and reuse of methanol and sodium hydroxide are realized to themaximum degree, and the treatment cost of enterprises is greatly reduced.

Description

technical field [0001] The invention belongs to the field of resin desorption liquid regeneration, and more specifically relates to a recovery treatment device and method for methanol-containing basic resin desorption liquid. Background technique [0002] As an important water treatment technology, resin adsorption technology has the advantages of simple operation, low operating cost, renewable recycling, etc. It can adsorb and remove various pollutants such as phenols, carboxylic acids, dyes, pesticides, and surfactants in wastewater. thing. The resin will be regenerated after adsorption and saturation. If the organic matter is difficult to remove from the resin during regeneration, a mixture of organic solvent and alkali is often used as the regenerant to achieve efficient desorption of organic matter from the resin. Such alkaline desorption liquid containing organic solvents contains not only high concentration of pollutants, but also organic solvents and alkalinity. If...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F101/30
CPCC02F1/447C02F1/4693C02F1/725C02F9/00C02F2101/30C02F2209/08C02F2301/063C02F2301/08
Inventor 陈利芳李正斌仇鑫巫先坤戴建军李爱民
Owner NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST
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