Integrated equipment for bipolar membrane high salt wastewater treatment

NegotiableUpdate on 04/07

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The integrated equipment for bipolar membrane high salt wastewater treatment is different from electrodialysis in that it does not require an external direct current electric field, but relies solely on the concentration difference of the solution on both sides of the membrane as the driving force.

Product Details

High salt wastewater refers to wastewater with a total salt content of at least 1% by mass It mainly comes from chemical plants and the collection and processing of oil and natural gas This type of wastewater contains various substances, including salt, oil, organic heavy metals, and radioactive substances. The generation pathways of saline wastewater are extensive, and the amount of water is increasing year by year. It is crucial to remove the impact of organic pollutants in saline wastewater on the environment.

　　Bipolar membrane high salt wastewater treatmentDiffusion dialysis is different from electrodialysis in that it does not require an external direct current electric field, but relies solely on the concentration difference between the solutions on both sides of the membrane as a driving force. Ion exchange membrane diffusion dialysis utilizes the selective permeability of ion exchange membranes to achieve material separation.

Due to the fact that diffusion dialysis does not require an external electric field, the diffusion dialysis device eliminates the electrode chamber, making the device simpler. The advantage of diffusion dialysis is that it does not require external energy, but the disadvantage is that the separation speed is slow, which is caused by the small diffusion coefficient of solutes and the small concentration difference in general.

双极膜高盐废水处理一体化设备

Integrated equipment for bipolar membrane high salt wastewater treatment-Integrated equipment for bipolar membrane high salt wastewater treatment

　　Bipolar membrane high salt wastewater treatmentBipolar membrane is a new type of membrane separation technology, which is a combination of bipolar membrane and unipolar membrane. Due to the cost-effectiveness of using bipolar membrane technology for water dissociation compared to direct electrolysis, combining it with unipolar membranes can achieve various functions and has applications in multiple fields. Let's take a look at the application of bipolar membrane technology in treating high salt wastewater:

1. Preparation and recovery of organic acids: Based on the low ionization and dissociation properties of organic acids, bipolar membrane electrodialysis can be used to directly convert organic acid salts into organic acids. Such as gluconic acid, lactic acid, citric acid, amino acids, tartaric acid, acetic acid, IDA, etc. Reaction equation: RNa+H2O=RH+NaOH. The bipolar membrane process has no wastewater discharge, and the by-product NaOH can also be recycled for fermentation.

2. Preparation and recovery of organic bases: Based on the low ionization and dissociation properties of organic bases, bipolar membrane electrodialysis can be used to directly convert organic base salts into organic bases. Various desulfurizer amine solutions, pharmaceutical intermediates, chemical intermediates, ionic liquids, etc. do not increase cations when introducing hydroxide ions, while separating anions.

3. Preparation of inorganic acids and bases: Directly hydrolyze inorganic salts to prepare inorganic acids and salts, usually strong acids or bases. The energy consumption of using bipolar membrane to prepare acid-base materials such as NaCl, Na2SO4, NH4Cl, KF, Li2SO4, etc. is much lower than that of ion membrane method.