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Water and Wastewater Treatment in Japan

Water and Wastewater Treatment in Japan. Tom O’Connor, PE H 2 O’C Engineering. Population Density. Population Density. Lake Biwa. Title. Lake Biwa Environmental Monitoring Station. Lake Biwa • Japan’s largest lake • water source for 14 million people

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Water and Wastewater Treatment in Japan

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  1. Water and WastewaterTreatment in Japan Tom O’Connor, PE H2O’C Engineering

  2. Population Density

  3. Population Density

  4. Lake Biwa

  5. Title

  6. Lake Biwa Environmental Monitoring Station Lake Biwa • Japan’s largest lake • water source for 14 million people • Ordinance Concerning the Prevention of Eutrophication of Lake Biwa (1979)

  7. Ordinance Concerning the Prevention of Eutrophication of Lake Biwa (1979) • prohibited detergents containing phosphorus • regulated wastewater from factories • expansion and improvement of sewer system • advanced treatment of sewage to remove nitrogen and phosphorus

  8. Hello, Toto

  9. Title Words

  10. Konan-ChubuWater Reclamation Plant

  11. Konan-ChubuWater Reclamation Plant Built on a reclaimed island using dredged soil Treatment Method: Nitrified Liquor Recycle Single-Stage Nitrification/Denitrification Process with Coagulant Addition and Sand Filtration Present Capacity: 50 MGD Design Capacity: 209 MGD

  12. Plant Performance

  13. Title Words

  14. Konan-Chubu PlantFlow Diagram

  15. Control Room

  16. Title Words

  17. Title Words

  18. Title Words

  19. Title Words

  20. Title Words

  21. Title Words

  22. Covered Gravity Thickener

  23. Sludge Dehydrator

  24. Kerosene Furnaces

  25. Slag • Strength equivalent to natural stone • TCLP (Leaching test) < detection levels

  26. Slag Words • Concrete pipes • Blocks • Bricks • Pavers • Aggregate • Backfill

  27. Drinking Water Treatment

  28. Fukui WaterTreatment Plant One of five treatment plants for the city

  29. Coagulation and Sedimentation

  30. Title Words

  31. Title Words

  32. Biomonitoring When fish die, plant shuts down

  33. Baffles

  34. Title Inclined Plate Settlers Words

  35. Control Panel

  36. PilotColumn?

  37. Chemical Feed Words

  38. Title Words

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  40. Disinfection and Filtrationand Farming

  41. Title Words

  42. Sodium Hypochlorite Generation

  43. On-line Monitoring • pH • chlorine

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