Across
- 1. Shedding of excess biological growth in trickling filters
- 4. Secondary disinfectant formed by chlorine and ammonia
- 6. Fine particulate matter concentration in water
- 9. Disinfection of water using chlorine
- 12. Treatment step that evens out flow and concentration variations
- 13. Cloudiness of water due to suspended matter
- 14. Primary treatment unit for removing settleable solids
- 15. Structure providing access to sewers and used for inspection
- 17. Parameter measuring biodegradable organic load in wastewater
- 18. Underground pipe conveying sewage by gravity
Down
- 2. TRAP Drain trap that prevents sewer gases from entering premises
- 3. Conversion of nitrate to nitrogen gas in anoxic conditions
- 4. Oxygen demand due to both biodegradable and nonbiodegradable organics
- 5. Process of removing dissolved gases and volatile organics by air
- 7. Gentle mixing that promotes formation of larger flocs
- 8. Semi-solid residue from wastewater treatment
- 9. Chemical added to destabilize colloidal particles
- 10. Biological oxidation of ammonia to nitrate
- 11. Wastewater from kitchens, bathrooms, and wash areas
- 16. Velocity head loss from flow through pipe fittings and bends