Alkalinity Flashcards
1
Q
What is alkalinity?
A
The ability of a solution to resist change towards a lower pH. Measured in mg CaCO3/L
2
Q
How many parts of alkalinity are needed to remove one part of ammonia during nitrification?
A
7.14 parts of alkalinity to remove one part ammonia
3
Q
Procedure for testing alkalinity
A
1) Calibrate pH meter appropriately
2) Measure 100mL of sample and transfer to a 250mL beaker
3) Measure the pH of the sample initially
4) Titrate the sample with the standard acid until pH 4.5 is obtained
5) Calculate (AxNx50000)/(mL sample)
4
Q
What is the standard acid used for titrating during alkalinity testing?
A
.0200N acid for samples 20-500 mg/L alkalinity
.1000N acid for samples above 500 mg/L alkalinity
Typically sulfuric acid
