System and process for treating pyridine-containing wastewater

Abstract

The invention discloses a system and process for treating pyridine-containing wastewater. The system comprises a raw water tank, the rear side of the raw water tank is sequentially connected with an adsorption pump, a fine filter, adsorption towers, a resin catcher and a water outlet tank, and the adsorption towers sequentially comprise an adsorption tower I 4-1, an adsorption tower II 4-2 and anadsorption tower III 4-3 from left to right; and according to a desorption system, a heat exchanger, a desorption pump, a methanol tank, an alcohol sleeving tank, a first water sleeving tank, a secondwater sleeving tank, a third water sleeving tank, a fourth water sleeving tank and a soft water tank are connected. Through the cooperation of the structures, the treatment work of the wastewater isaccelerated, the pyridine content in the wastewater can be reduced, pyridine can be effectively recycled, the reuse rate of pyridine in the wastewater is increased, a desorption agent can be recycled,the treatment cost is reduced, the problem of pyridine wastewater pollutants is solved, and the effects of energy conservation and emission reduction can be achieved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a system and process for treating pyridine-containing wastewater. Background technique [0002] Pyridine is a six-membered heterocyclic compound containing nitrogen heteroatoms, and its derivatives include cyanopyridine, halopyridine, etc. Pyridine can be used as a denaturant, a dyeing aid, and a starting material for the synthesis of a series of products, including medicines, disinfectants, dyes, food seasonings, adhesives, explosives, etc. Pyridine is strongly irritating; it can anesthetize the central nervous system Nervous system, loss of consciousness, incontinence, tonic spasm, blood pressure drop in severe cases after high concentration inhalation, pyridine wastewater is difficult to be oxidized by potassium dichromate and has strong inhibition and toxicity to microorganisms in the biochemical process, Pyridine wastewater has a stable structure and is dif...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a system and process for treating pyridine-containing wastewater, which can reduce the content of pyridine in wastewater, and can effectively recycle pyridine, improve the reutilization rate of pyridine in wastewater, and the desorbent can be recycled. The use reduces the treatment cost, solves the problem of pyridine wastewater pollutants, and can achieve the advantages of energy saving and emission reduction, which brings certain beneficial effects to actual use and solves the problems raised in the above background technology.

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