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Typical steps in municipal wastewater treatment

Typical steps in municipal wastewater treatment. Archimedes screws for initial wastewater pumping. Module for flow repartition (between dry-weather and wet-weather treatment lines). Parshall flume for flow-rate measurement (at the outlet of the plant). bar screen separation.

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Typical steps in municipal wastewater treatment

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  1. Typical steps in municipal wastewater treatment

  2. Archimedes screws for initial wastewater pumping

  3. Module for flow repartition (between dry-weather and wet-weather treatment lines)

  4. Parshall flume for flow-rate measurement (at the outlet of the plant)

  5. bar screen separation

  6. Grit and grease removal

  7. counter-current washing and extraction of the grits

  8. Terminal settling velocity vs DECANTATION Gravity – Archimedes buoyancy

  9. Terminal settling velocity vs DECANTATION Gravity – Archimedes buoyancy We define a = 1.096 b = 13.86

  10. vs vs = vs d

  11. Boycott effect

  12. vs can now be reduced to

  13. LAMELLA SETTLING TANKS: Shortening the settling distance Pipe bundles also used

  14. Actiflo process (OTV - Krüger) coagulation, flocculation, settling assisted by 125µm microsand injection, lamellar gravity separation residence time lower than 15 min

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