WCW-Winter

3. A ‘row’ of UV lamps in a bank.
4. This part of a UV lamp must be clean for the system to be effective.
9. In water treatment this describes waste generated from the treatment process.
11. The name of spiral-like solids conveying system where a screw-like device is rotated and the settled solids are transported up an incline.
15. Implies the total elimination of pathogens or disease carrying microorganisms.
16. This material is collected from the surface of wastewater clarifiers through a skimmer blade.
17. One bundle of UV lamps.
18. Type of sample evenly spaced throughout the day, often hourly, and is collected for analysis every 24 hours.
19. A term used in clarification regarding depth of sludge.

1. One of the purposes of removing grit is to protect these from plugging and suffering abrasion, wear and tear.
2. 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.
5. The “H” in HMI.
6. A reliable measurement of electrolyte concentration in a water sample.
7. The percentage of UV light that is not absorbed after passing through 1 cm of effluent sample.
8. A data server that collects and stores process data from the application servers for future use.
10. A reduction in the concentration of pathogens to non-infectious levels.
12. Element important for sustaining life; specific amounts are used in controlling the growth of biology in systems.
13. Hydrogen sulphide creates odors that can be classified as this.
14. Light that is a wavelength around 400 to 700 nm is ________ .
20. The single unit source of UV radiation.