TCEQ Surface Water B License Exam
Complete Questions and Answers|
Updated
What is the purpose of nonionic polymers?
Filter aids
Where do humic and fulvic acids come from?
Natural Organic Matter (NOM) decay
What can chlorine oxidize?
Iron, manganese, and microorganisms
At what pH range does iron react best?
7.5-8.0
At what pH range does manganese oxidation occur best?
9.0-10.0
What is required in a chlorine room with more than one 150-pound cylinder?
, High level fans and floor vents
What are the characteristics of chlorine?
Greenish-yellow gas, 2.5 times heavier than air
At what frequency should filters be backwashed?
100-hour run time or 6-10 feet of head loss
What is the backwash rate?
16 gpm/ft2
What is the process for softening water?
Sodium zeolite and lime/soda ash
What is used for algae control in large bodies of water?
Copper sulfate or potassium permanganate
What is used to measure sludge?
Sludge Judge or sample taps on clarifier
What do lime and soda ash do to water?
Increase alkalinity, which increases coagulation and removes more floc
Complete Questions and Answers|
Updated
What is the purpose of nonionic polymers?
Filter aids
Where do humic and fulvic acids come from?
Natural Organic Matter (NOM) decay
What can chlorine oxidize?
Iron, manganese, and microorganisms
At what pH range does iron react best?
7.5-8.0
At what pH range does manganese oxidation occur best?
9.0-10.0
What is required in a chlorine room with more than one 150-pound cylinder?
, High level fans and floor vents
What are the characteristics of chlorine?
Greenish-yellow gas, 2.5 times heavier than air
At what frequency should filters be backwashed?
100-hour run time or 6-10 feet of head loss
What is the backwash rate?
16 gpm/ft2
What is the process for softening water?
Sodium zeolite and lime/soda ash
What is used for algae control in large bodies of water?
Copper sulfate or potassium permanganate
What is used to measure sludge?
Sludge Judge or sample taps on clarifier
What do lime and soda ash do to water?
Increase alkalinity, which increases coagulation and removes more floc
