Resourceful treatment system and process for high-concentration phenolic resin wastewater

Abstract

The invention discloses a resourceful treatment system and process for high-concentration phenolic resin wastewater, and belongs to the technical field of industrial wastewater treatment. The device mainly comprises a wastewater temporary storage tank, a heat exchanger, a reactor, a flow buffer element, a gas-liquid separator, a recycled water temporary storage tank and an intelligent control element. The high-concentration phenolic resin wastewater enters the reactor after multi-stage heat exchange, organic matters in the wastewater can be decomposed and reformed to generate high-added-valueproducts such as CH4 in only 10-15 minutes under the action of the catalyst, the COD removal rate is up to 99.5% or above, and the CH4 yield is up to 98%. In conclusion, the new system and the new process for resourceful treatment of high-concentration phenolic resin wastewate have the advantages of good treatment effect, safety, reliability, high automation degree, energy and water conservation,high resourceful degree and the like, and have good industrial application prospects.

Description

Technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and specifically relates to a resource treatment system and process for high-concentration phenol resin wastewater. Background technique [0002] Phenolic resin is a condensation polymer synthesized from phenols and aldehydes under the action of acid or alkali catalysts. Because of its unique high temperature resistance and good insulation properties, it is widely used in coatings, electrical insulating materials, abrasive cloth binders and other industries. in production. However, in the phenolic resin production process, a large amount of high-concentration wastewater will inevitably be generated. These wastewaters contain higher concentrations of phenols and aldehydes, as well as some small molecular weight phenolic resins and toxic substances such as acetic acid. Direct discharge of these wastewater will not only pollute and destroy the surrounding ecological environment, ...

AI Technical Summary

Problems solved by technology

[0003] Among the many high-concentration phenolic resin wastewater treatment processes, physical methods represented by extraction, adsorption, air stripping or membrane methods have attracted much attention because they can recycle various substances in wastewater. However, due to the composition of phenolic resin wastewater Complicated, the physical and chemical properties of each component are not much different, which increases the difficulty and cost of recovery, which limits the industrial application of the above method to a certain extent

Chemical oxidation method, catalytic wet oxidation method, sonochemical oxidation method, photochemical oxidation method, electrochemical oxidation method and other chemical methods have the advantages of fast reaction speed, good treatment effect and no secondary pollution. The conversion of organic matter into carbon dioxide and water will undoubtedly increase the emission of carbon dioxide, and at the same time, the potential resources of organic matter in wastewater are not fully utilized.

In addition, these chemical methods also have the common problem of high processing costs

However, there is no report on the use of this technology to treat high-concentration phenolic resin organic wastewater

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