CHEMICAL TREATMENT
Chemical treatment is a method used to remove pollutants in wastewater through chemical reactions. It is typically combined with physical or biological treatment and is especially effective in removing dissolved contaminants (such as heavy metals, phosphates, toxic substances).
Main Objectives of Chemical Treatment:
- Neutralization of harmful substances
- Precipitation of dissolved metals
- Removal of nutrients such as phosphorus and nitrogen
- Breakdown of oils, grease, and emulsions
- Reduction of color, odor, and toxicity
Main Chemical Treatment Methods:
- Coagulation: Addition of chemicals to combine fine particles
- Flocculation: Aggregation of the small particles formed after coagulation into larger masses
- Neutralization: Balancing the pH of acidic or alkaline waters
- Chemical Precipitation: Removal of substances such as phosphates and heavy metals by precipitation
- Oxidation/Reduction: Conversion of harmful substances (e.g., cyanide, phenol) into less harmful forms
Application Areas:
- Industrial wastewater treatment plants
- Domestic wastewater (especially in the advanced treatment stage)
- Drinking water treatment plants (e.g., removal of iron and manganese)
