Membrane-Based Acetic Acid Recovery Process

Product Overview

The membrane-based acetic acid recovery process is a high-efficiency resource recovery solution based on multi-stage membrane separation technology. It is primarily used to recover acetic acid from PTA wastewater while enabling water reuse.

Through optimized process design and integrated membrane systems, the process operates stably under complex conditions, effectively reducing production costs and environmental discharge. It is widely applicable in petrochemical and fine chemical industries for wastewater resource recovery.

Working Principle

This process adopts a multi-stage membrane separation scheme to efficiently recover acetic acid from PTA wastewater.

First, the wastewater is cooled via heat exchange to reduce thermal load and ensure stable operation of downstream membrane units. Then, pretreatment is carried out to remove suspended solids and part of the organic impurities, minimizing membrane fouling and extending service life.

The core separation process utilizes a two-stage reverse osmosis system:

In the first stage, the wastewater is initially concentrated, removing most impurities and producing a relatively high-concentration acetic acid solution

In the second stage, the permeate is further concentrated to improve overall acetic acid recovery while significantly reducing the acetic acid content in the produced water

Through this process, the acetic acid recovery rate can reach ≥80%, and the water recovery rate can reach ≥90%, enabling efficient recovery of valuable components and recycling of water resources

Key Features

• High recovery efficiency: Acetic acid recovery rate exceeds 80%, reducing fresh raw material consumption

• High water recovery: Water recovery rate exceeds 90%, improving water utilization efficiency
• Low discharge load: Significantly reduces acetic acid content in effluent, easing downstream treatment


• Stable and reliable operation: Suitable for complex wastewater conditions such as high temperature and low pH

• Energy-saving and environmentally friendly: Reduces resource consumption and wastewater discharge, supporting sustainable manufacturing

Applications

• Petrochemical industry: PTA wastewater treatment for efficient acetic acid recovery and reuse
• Chemical industry: Treatment of various industrial wastewaters containing acetic acid and its derivatives
• Wastewater treatment systems: Advanced treatment and resource recovery unit
• Industrial water reuse: Suitable for processes requiring high water quality, supporting water recycling and energy-saving goals