Across
- 1. One bundle of UV lamps.
- 7. This material is collected from the surface of wastewater clarifiers through a skimmer blade.
- 8. A data server that collects and stores process data from the application servers for future use.
- 9. Type of sample evenly spaced throughout the day, often hourly, and is collected for analysis every 24 hours.
- 10. Implies the total elimination of pathogens or disease carrying microorganisms.
- 11. A reduction in the concentration of pathogens to non-infectious levels.
- 13. This part of a UV lamp must be clean for the system to be effective.
- 16. The purpose of this unit in BNR treatment is to thicken primary sludge prior to digestion and to create an environment where a source of readily biodegradable carbon in the form of VFAs can be produced.
- 18. Element important for sustaining life; specific amounts are used in controlling the growth of biology in systems.
- 19. Light that is a wavelength around 400 to 700 nm is ________ .
Down
- 2. The name of spiral-like solids conveying system where a screw-like device is rotated and the settled solids are transported up an incline.
- 3. One of the purposes of removing grit is to protect these from plugging and suffering abrasion, wear and tear.
- 4. A ‘row’ of UV lamps in a bank.
- 5. The percentage of UV light that is not absorbed after passing through 1 cm of effluent sample.
- 6. The “H” in HMI.
- 9. A reliable measurement of electrolyte concentration in a water sample.
- 12. Hydrogen sulphide creates odors that can be classified as this.
- 14. The single unit source of UV radiation.
- 15. In water treatment this describes waste generated from the treatment process.
- 17. A term used in clarification regarding depth of sludge.