Introduction to Haipu Acid Separation Equipment System

Strong acid is widely used as a cleaning agent, corrosive agent, or catalyst in industries such as metallurgy, machinery, and chemical engineering. When impurities in the acid reach a certain concentration, it cannot be used in production and becomes waste acid.

Waste acid has the problem of wide sources and scattered industries, and many chemical products often produce waste acid during production.

In addition, waste acid not only has a large production capacity, but also has hazardous characteristics such as corrosiveness, toxicity, and reactivity, which pose a great threat to the environment. Improper disposal can cause serious resource waste.

According to the National Hazardous Waste List, waste acid liquids, acid residues, and acid sludge generated during the production, sales, and use of refined petroleum products, basic chemical manufacturing, steel rolling processing, metal surface treatment and heat treatment processing, electronic component manufacturing, and other non-specific industries are all classified as hazardous waste and must be disposed of by qualified hazardous waste disposal units.

Current situation of waste acid treatment

At present, the treatment methods of waste acid solution at home and abroad mainly include neutralization method, adsorption method, vacuum evaporation method, diffusion dialysis method and spray roasting method.

The following is a comparison of several waste acid disposal processes

To meet the needs of enterprises in terms of the maturity of waste acid treatment processes, environmental protection requirements, and long-term economic viability.

The research team of Haipu Functional Materials has developed an acid separation equipment system based on self-developed adsorption materials.

The principle is that the acid separation material has the ability to adsorb strong acids and discharge metal salts from the acid. During the adsorption process, the waste acid containing metal salts (such as iron, zinc, nickel, etc.) passes through the acid separation column. The free acid in the waste acid adheres to the acid separation material bed, and the metal salts are directly discharged. During the desorption process, pure water is introduced to wash away the free acid attached to the adsorption material, forming a recovered acid.

At the same time, the adsorbent material can be re adsorbed, and this cycle repeats itself to complete the separation of acid and metal salts, achieving the purification and recovery of waste acid.

The advantages of low bed adsorption technology are also very obvious

The waste acid is treated by an acid separation column, and the effluent is a low acid and high salt residual solution. The acid separation column uses soft water to desorb and form recycled acid, which contains a large amount of dissolved metal ions. It can be returned to the neutralization and sedimentation tank for treatment. The recycled acid is collected in the recycling acid tank and added to the acid washing tank in proportion with the concentrated acid, and reused for acid washing.

Advantages of Haipu Acid Separation Equipment System

Compared with other waste acid treatment technologies, the Haipu waste acid separation equipment system has significant application advantages in terms of operating costs and efficiency, which can be summarized as follows:

• Small footprint - equipment integrated assembly can save 50% of the footprint and 70% of the space;

• Reduce equipment costs - high adsorption flow rate, low demand for adsorption materials, and low equipment investment;

• Reduce production and operating costs - recover 80% of free acid, reduce the amount of new acid added, and lower the neutralization cost of waste acid and the treatment cost of solid slag;

• Reduce initial installation costs - modular assembly, providing integrated devices with short installation cycles and low costs;

• Reduce operating costs - eliminate labor costs such as cleaning, washing, and reconfiguring chemical reagents for acid pickling tanks;

• Higher purity of output - instant recovery and regeneration of waste acid can maintain the stability of acid composition and improve the surface treatment quality of the production line.