Chlorine
Chemical Acronym for Chlorine Gas
Cl2
Chemical Acronym for Ozone
O3
What type of sample is a DPD sample?
Grab sample
What does DBP stand for?
Disinfection by product
Strength of HTH
65%
What is "left over" to protect against waterborne diseases
Chlorine Residual
How is ozone produced? (what happens in the ozone generator?
Air or Oxygen is passed through an electrical current
What is the most accurate way to measure fluid in the lab?
Pipet
TTHM MCLG
0
What degrades rapidly in sunlight?
Sodium hypochlorite or liquid bleach
Chlorine gas is deadly at what percent in the air?
0.1%
What is the DBP produced with the reaction between ozone and organics?
Bromate
What test is used to determine chlorine residuals?
DPD
HAA5 MCL
0.060 mg/l or 60 ppb
What can be fed "neat" from a storage tank?
How many pounds per a day can a ton cylinder feed without freezing up?
400 lbs/ day
Its unstable/ dissappears
What is in the coliform sample bottle to neutralize Chlorine?
Sodium Thiosulfate
Bromate MCL
0.010 mg/l
What Requires special feed equipment if used to provide a chlorine residual in the distribution system?
Calcium hypochlorite/ HTH
If chlorine tanks are heated too much... what can happen?
Gas will expand...Combustion
What happens in the air gap of an ozone generators dielectrode?
Electricity is made
Retest sample site AND 5 up and 5 down from sample site
Chlorite MCLG
0.8 mg/l
What type of pump is most commonly used in feeding sodium hypochlorite?
Positive displacement metering pump