Recycling waste acid diffusion dialyzer softening water equipment

Diffusion dialysis refers to the use of ion exchange membranes to separate feed and receive solutions with different concentrations. Solutes diffuse through the membrane from the side with higher concentration to the side with lower concentration. When the concentration on both sides of the membrane reaches equilibrium, the dialysis process stops. The concentration difference is the driving force behind dialysis. During the dialysis process, the feed solution and the receiving solution generally flow in opposite directions. Diffusion 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.

Recycling waste acid diffusion dialyzerEquipment application field:

1. Acid recovery

Negative film is used in acid recovery projects, such as recovering hydrochloric acid using water as the extraction solution.

2. Alkali recovery

In the alkali recovery project, a cation exchange membrane is used, such as for the recovery of sodium hydroxide, with a recovery rate between 70-80% and an alkali resistance of 15%.

3. Economy:

Low cost acids such as hydrochloric acid, sulfuric acid, etc.:

When the concentration is greater than 10%, it is more cost-effective to recover the original solution.

When the concentration is between 5% and 10%, recycling can be attempted

When the concentration is less than 5%, diffusion dialysis equipment does not have economic advantages.

Recycling waste acid diffusion dialyzerThe principle used is dialysis, driven by concentration difference. This product membrane and its equipment are mainly used for the separation and purification of acid and metal salt mixtures, and are a good choice in the field of waste acid. It has the advantages of easy operation, energy and resource conservation, and no secondary pollution. The recovered acid can be recycled, and the residual liquid after acid separation can recover useful metals. It is widely used in various fields that discharge waste acid, such as the steel industry, wet copper smelting industry, electroplating industry, chemical industry, rare earth industry, and other non-ferrous metal smelting industries. The types of acid recovered can include sulfuric acid, hydrochloric acid HF、 Nitric acid and other metal ions mainly include transition metal ions, rare earth ions, and magnesium calcium ions.