Activated Carbon for Sewage Treatment Plant

Activated carbon is widely used in sewage treatment plants. It is mainly used to absorb organic pollutants, heavy metal ions, odors and color in sewage. The specific functions and usage methods are as follows:

Features and Benefits:
1. Adsorption of organic matter:
 - Activated carbon has good adsorption capacity for dissolved organic matter (such as phenol, pesticides, dyes, etc.) and can significantly reduce the chemical oxygen demand (COD) of sewage.
2. Remove heavy metals:
 - Activated carbon has a high adsorption effect on certain heavy metal ions (such as mercury, lead, chromium, etc.).
3. Decolorization and odor removal:
 - It has a good effect on removing color and odor components in sewage and improving the quality of effluent water.
4. Remove micro-pollutants:
 - Including drug residues, endocrine disruptors (such as estrogen), microplastics and other refractory pollutants.
5. Enhance the depth treatment of effluent:
 - Particularly suitable for reclaimed water reuse and pretreatment of drinking water sources.

Usage form:
1. Granular activated carbon (GAC):
 - Commonly used in fixed bed adsorption towers, moving bed adsorption devices, etc., suitable for large-scale treatment.
 - Advantages: It can be regenerated multiple times, has a large adsorption capacity and has a long service life.
2. Powder activated carbon (PAC):
 - Often added directly to sewage treatment, suitable for short-term treatment or emergency treatment.
 - Advantages: flexible dosing, low cost, suitable for dealing with intermittent pollution.

Application areas:
- Industrial wastewater treatment: remove wastewater containing high concentrations of organic matter, heavy metals, and chemical reagents.
- Domestic sewage treatment: improve effluent water quality and be used for advanced sewage treatment.
- Reclaimed water system: removes refractory organic matter and micro-pollutants.
- Drinking water source protection: pretreatment of surface and groundwater.

Precautions for use:
1. Regular replacement or regeneration:
 - Activated carbon will gradually become saturated during use and its adsorption capacity will decrease. It needs to be replaced regularly or regenerated with high-temperature steam.
2. Preprocessing before processing:
 - In order to improve the efficiency of activated carbon, suspended solids and large particle impurities should be removed first.
3. Select the appropriate type and particle size:
 - Select the appropriate type of activated carbon (such as coconut shell activated carbon or coal-based activated carbon) based on the type and concentration of pollutants.
4. Avoid secondary pollution:
 - Saturated activated carbon needs to be properly disposed of to avoid re-release of contaminants.

If you need help selecting a form or understanding specific cases, please feel free to consult further!