What are some common activated carbons used in water treatment?
For different application scenarios, activated carbon for water treatment mainly comes in the following forms, each with its specific application direction:
1. Granular activated carbon for water treatment
Specifications: Common specifications include 8×16 mesh, 8×30 mesh, 10×30 mesh, 10×40 mesh, 12×40 mesh, 20×50 mesh, etc.
Core characteristics: Made through steam activation or briquet crushing process, it features high strength, large adsorption capacity, and can be repeatedly regenerated for use.
Application scenarios: municipal drinking water purification filter bed, industrial process water pretreatment, large-scale wastewater treatment system, achieving deep purification through water flow gravity infiltration.
2. Powdered activated carbon for water treatment
Specification: Primarily composed of fine particles, commonly including 200 mesh, 325 mesh, etc., with strong dispersibility.
Core characteristics: large specific surface area, fast adsorption rate, flexible adjustment of dosage, suitable for batch processing scenarios.
Application scenarios: emergency response to sudden water pollution, decolorization and purification of food and beverages, precise purification of small water treatment equipment, achieving purification through the process of dosing, stirring, and filtering.
3. Columnar water treatment activated carbon
Specification: Cylindrical design, with common diameters including 0.9mm, 1.5mm, 2mm, 3mm, 4mm, etc.
Key features: high mechanical strength, low ash content, low pressure drop, uniform structure, and stable adsorption efficiency.
Application scenarios: industrial circulating water treatment, high-flow water purification systems, gas-liquid combination treatment equipment, especially for scenarios with strict requirements on water flow resistance.
4. Special-shaped activated carbon
Including briquet crushing activated carbon, raw coal crushing activated carbon, acid washing activated carbon, etc., with optimized performance through special processes.
Key Features: The acid-washed product has a low iron content (100-500) and strict ash control, meeting the demand for high-purity water quality. The raw coal crushing process retains the natural pore structure of the raw material, offering high cost-effectiveness.
Application scenarios: ultrapure water preparation in the pharmaceutical industry, water treatment in the electronics industry, and advanced purification of challenging industrial wastewater.