A resin desorption regeneration method for adsorbing organic matter

Abstract

The invention discloses a resin desorption regeneration method for adsorbing organic matter, which comprises the steps of desorbing and regenerating the resin adsorbing organic matter using a mixed gas of premixed nitrogen and water vapor; the water vapor in the mixed gas and the organic matter adsorbed on the resin An azeotrope is formed, and the organic matter is discharged from the resin tower with the mixed gas. Further, the desorbed nitrogen and the gas containing organic matter pass through the molecular sieve for dehydration, wherein the water is absorbed by the molecular sieve, the nitrogen and the organic matter are discharged separately, and the organic matter is condensed to recover the organic matter, and the nitrogen gas can be recycled for continued use. Adopt the mixed gas desorption method of nitrogen and water vapor of the present invention to regenerate resin, compare with the full water vapor desorption of the same pressure, adopt the less amount of steam in the present invention to be able to reach the effect equivalent to full water vapor desorption level, and can effectively reduce the amount of wastewater generated after desorption, reducing the cost of wastewater treatment.

Description

A kind of resin desorption regeneration method for adsorbing organic matter technical field The invention belongs to resin regeneration field, more specifically, relate to a kind of resin desorption regeneration method of adsorbing organic matter Law. Background technique Organic chemical industry such as dyestuff, pesticide, medicine and its intermediate etc. can produce a large amount of production waste containing organic matter. Water is a serious source of pollution. Due to its high toxicity, high concentration, deep color and strong acid (alkaline) properties, this type of wastewater has been used for a long time. It has always been a problem that has plagued chemical companies, and has received widespread attention from the environmental protection circles at home and abroad. Commonly used treatment methods include Resin adsorption method, extraction method and membrane separation method, etc. Resin adsorption method has high adsorption capacity, easy desorpt...

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Problems solved by technology

[0008] Further, in order to solve the problem that the organic matter will be lost with the waste water in the existing water vapor desorption, the present invention adopts the method of dehydrating the desorbed nitrogen gas and the gas containing the organic matter together through the molecular sieve for dehydration, wherein the water is absorbed by the molecular sieve, nitrogen and After the organic matter is discharged separately, the organic matter is condensed and recovered to realize the separation of gas, water, and organic matter phases, and the nitrogen can be reused for desorption, which further solves the problem of large amount of wastewater generated in the prior art, which is difficult to treat and organic matter is lost with a large amount of wastewater. question

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