L4 - Chemical Characteristics of Water Flashcards
1
Q
Organic Compounds in Wastewater
A
Carbohydrates, proteins, and fats
2
Q
Aerobic Process
A
Biodegradation in the presence of oxygen
3
Q
Anaerobic Process
A
Biodegradation in absence of oxygen
4
Q
BOD
A
Biochemical Oxygen Demand (Amount of O2 consumed by micro-organisms)
5
Q
COD
A
Chemical Oxygen Demand (Measures the oxygen equivilent of the organic matter in the presence of acid and heat) Amount of dichromate is measured at the end.
6
Q
TOC
A
Total Organic Carbon (For small amounts of organics, infrared analyzer, measures CO2 concentration)
7
Q
ThOD
A
Theoretical Oxygen Demand
8
Q
TOD
A
Total Oxygen Demand
9
Q
Rate Constant K Depends On?
A
- Nature of the waste (Strength of Waste)
- Type of Organism Present
- Temperature
10
Q
What are the advantages and disadvantages of COD test
A
Adv - Takes 3hrs
Dis- Toxic and does not provide info of rate of oxidation
11
Q
A
