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Industrial Wastewater Treatment and Alkaline Recovery Electrodialysis Unit

Industrial Wastewater Treatment and Alkaline Recovery Electrodialysis Unit
Industrial Wastewater Treatment and Alkaline Recovery Electrodialysis Unit
Industrial Wastewater Treatment and Alkaline Recovery Electrodialysis Unit
Industrial Wastewater Treatment and Alkaline Recovery Electrodialysis Unit

Industrial Wastewater Treatment and Alkaline Recovery Electrodialysis Unit

Core Principle of Bipolar Membrane Electrodialysis (BPED)

The core of BPED technology lies in the combination of electric field, selective membrane technology, and the unique water-splitting capability of bipolar membranes.
1. Driving Effect of DC Electric Field
Under a DC electric field, ions migrate directionally: cations move toward the cathode, while anions move toward the anode.
2. Membrane Functions
  • Bipolar Membrane (BPM): Splits water ( 

     ) into  and  ions under the electric field, providing a source for acid and base production.
  • Cation Exchange Membrane (CEM): Selectively allows cations to pass through.
  • Anion Exchange Membrane (AEM): Selectively allows anions to pass through.
By arranging these membranes alternately, salts can be converted into corresponding acids and bases.
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Diffusion Dialysis Membranes

Including acid recovery diffusion dialysis membranes and alkali recovery diffusion dialysis membranes.

Diffusion Dialyzers

Equipment for separating alkali (acid) by arranging diffusion dialysis membranes, dialysis chamber separators, and diffusion chamber separators in a certain order, placing water distribution plates on both sides and clamping with clamping plates.

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Working Principle

The diffusion dialysis process takes concentration difference as the driving force, and uses the selective permeability of (anion) cation exchange membranes to (acid) alkali and high retention of salts or other components to separate (acid) alkali from salts or other components in the solution. The separated alkali (acid) solution is reused in the production process.

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Industrial Application of Diffusion Dialysis

1.Electronic Aluminum Foil Industry Waste Acid Recycling Project

2.Graphite Industry Waste Acid Recycling Project

3.Hydrometallurgy Industry Waste Acid Recycling Project

4.Steel Pickling Industry Waste Acid Recycling Project

5.Titanium Dioxide Industry Waste Acid Recycling Project

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Bipolar Membranes

Composed of a composite of anion membrane layer and cation membrane layer, which can perform electro-dissociation of water or alcohol under the drive of an electric field.

Equipment Structure

Assembled by alternating bipolar membranes, anion membranes, and cation membranes, separated by separators, and equipped with electrode plates, polar plates and end plates.

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Working Principle

Water is dissociated into H⁺ and OH⁻ ions, which combine with corresponding anions and cations respectively to form acids and alkalis. At the same time, wastewater desalination and acid/alkali preparation are realized.

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Industrial Application of Bipolar Membrane Electrodialysis

1.Bipolar Membrane Electrodialysis for Organic Acid/Alkali Conversion and Concentration

 2.Bipolar Membrane Electrodialysis for

Resource Utilization of Brine Treatment

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Core Principle of Bipolar Membrane Electrodialysis (BPED) The core of BPED technology lies in the combination of electric field, selective membrane technology, and the unique water-splitting capability of bipolar membranes. 1. Driving Effect of DC Electric FieldUnder a DC electric field, ions migrate directionally: cations move toward the cathode, while anions move toward the anode. 2. Membrane Functions Bipolar Membrane (BPM): Splits water ( H2​O ) into H+ and OH− ions under the electric field, providing a source for acid and base production. Cation Exchange Membrane (CEM): Selectively allows cations to pass through. Anion Exchange Membrane (AEM): Selectively allows anions to pass through. By arranging these membranes alternately, salts can be converted into corresponding acids and bases.

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