WCW - Winter

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 ________ .

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.