True and False - 3 Flashcards
(25 cards)
The MCRT does not effect the amount of oxidation that occurs in wastewater
F
A combined sedimentation-digestion unit is a type of package treatment plant
T
Chlorine is lighter than air and will collect on the ceiling if a leak occurs
F
pH measuremetns and pond color are important indicators of how well a pond is functioning
T
Ammonia soaked rags are a good way to find chlorine leaks
T
The primary digester of a multiple anaerobic digester system is normally heated and mixed
T
Large amounts of filamentous bacteria are important to a good settling activated sludge
F
Nutrient removal is common for conventional activated sludge treatment plants
F
Hydrochloric acid is formed when chlorine reacts with water
T
As air bubbles through activated sludge most oxygen is absorbed
F
Proteins aerobically decompose to nitrate, carbon dioxide and water
T
Carbohydrate anaerobic decay results in the formation of odorous gasses, methane and organic acids
T
Disinfection contact time is more important than disinfectant concentration
T
Algae growth is accomplished through photosynthesis
T
Data should be checked for the previous two to three weeks, when an activated sludge plant becomes upset
T
Continuous active sludge wasting is required in an activated sludge plant
F
Reducing the oxygen demand of organic substances in wastewater is the primary purpose of secondary treatment
T
Thief hole is the name used for anaerobic digester sampling ports
T
Sludge should not be withdrawn from the primary digester, unless it shows signs of bulking
F
Disinfection is generally more effective in a clarified effluent than a turbid one
T
Plastic, hair and cigarette butts are easily digested in either an anaerobic or aerobic digester.
F
Volatile solids should account for 65 to 85% of the solids produced from an activated sludge plant
T
Increases in temperature generally increase oxidation process
T
Blower control is important to the activated sludge process
T