Application of activated carbon filter in water purification

1. Working principle of activated carbon filter
Activated carbon is a specially treated porous carbon material with rich microporous structure inside, and the specific surface area is as high as hundreds or even thousands of square meters/gram. These micropores can effectively remove impurities, odors, residual chlorine, organic pollutants (such as pesticides, disinfection by-products) and some heavy metal ions in water through physical adsorption, chemical adsorption and catalysis.

Physical adsorption: Use the micropores on the surface of activated carbon to intercept and adsorb molecules in water.

Chemical adsorption: The functional groups on the surface of activated carbon react chemically with pollutants to form stable compounds.

Catalysis: Some activated carbons have catalytic properties and can decompose certain harmful substances (such as residual chlorine).
2. Application scenarios of activated carbon filter in water purification field
Household water purifier
In kitchen water purifier and direct drinking machine, activated carbon filter is usually used as pretreatment or core filter layer to remove residual chlorine, odor and some organic matter in water and improve the taste of water.
Whole house water purification system
Large particle activated carbon filter is often used in central water purifier to preliminarily purify the water used in the whole house and protect subsequent equipment (such as water softener and RO reverse osmosis membrane) from pollution.
Portable water purification equipment
In outdoor water purifier and emergency water purifier, activated carbon filter can quickly remove odor and harmful substances in outdoor water source and ensure temporary water safety.
Auxiliary industrial water treatment
In industrial wastewater treatment, activated carbon filter can be used for deep treatment to further reduce the concentration of pollutants and meet emission standards.
3. Advantages of activated carbon filter
Efficient purification: high removal rate of pollutants such as residual chlorine, odor and organic matter, significantly improving water quality.
High cost-effectiveness: Compared with other filter materials (such as reverse osmosis membrane), activated carbon filter has lower cost and is suitable for large-scale application.
Strong adaptability: It can be used in combination with ultrafiltration membranes, RO membranes and other filter materials to form a multi-stage filtration system.
Environmentally friendly: Activated carbon can be regenerated or rendered harmless through pyrolysis treatment, which is in line with the concept of sustainable development.