Steps to Get Clarified Water from Wastewater:
1. Screening:
- In this step, large debris and particles are removed from the wastewater using screens or filters. This helps in preventing damage to downstream equipment.
2. Primary Treatment:
- The wastewater is then settled in a tank to allow solids to settle at the bottom and oils to float at the top. This process helps in removing a significant amount of suspended solids and organic matter.
3. Secondary Treatment:
- After primary treatment, the wastewater undergoes secondary treatment where biological processes are used to further remove organic matter and nutrients. This can be done through activated sludge process, trickling filters, or other methods.
4. Clarification:
- In this step, the wastewater is passed through a clarifier or sedimentation tank where remaining suspended solids settle out. Chemicals like alum or polymers may be added to aid in the clarification process.
5. Filtration:
- The clarified water then goes through a filtration process to remove any remaining fine particles. This can be done using sand filters, membrane filters, or other filtration methods.
6. Disinfection:
- To ensure the water is safe for reuse or discharge, it undergoes a disinfection process. Common methods include chlorination, UV irradiation, or ozonation to kill any remaining pathogens.
7. Final Polishing:
- If further treatment is required, the water may undergo additional processes such as advanced oxidation, carbon adsorption, or reverse osmosis to meet specific quality standards.
By following these steps, wastewater can be effectively treated to produce clarified water that can be safely reused or discharged back into the environment.