VWASTEWATER PRACTICE EXAM 3
TRUE/FALSE COMPLETE DETAILED
CASE STUDY
Devices that control equipment should be used as an aid to operators, not as a replacement. - True
Flaring excess anaerobic digester gas is a normal operation. - True
Mechanical aerators are not used to keep solids suspended in wastewater ponds. - True
Even in small amounts insecticides, herbicides, and pesticides can be toxic to secondary treatment
process. - True
When an anaerobic digester is going sour, the pH will drop before the volatile acid/alkalinity ratio. - False
A combined sedimentation digestion unit is a type of package treatment plant. - True
Pretreatment can aid grease removal in primary clarifiers. - False
Sludge digesters always operate in an aerobic condition. - False
Suspended solids settling can be prevented in storage tanks by air addition. - False
Lime sludge is not corrosive to pump parts. - False
Chemical stabilization can be used on sludge. - True
TRUE/FALSE COMPLETE DETAILED
CASE STUDY
Devices that control equipment should be used as an aid to operators, not as a replacement. - True
Flaring excess anaerobic digester gas is a normal operation. - True
Mechanical aerators are not used to keep solids suspended in wastewater ponds. - True
Even in small amounts insecticides, herbicides, and pesticides can be toxic to secondary treatment
process. - True
When an anaerobic digester is going sour, the pH will drop before the volatile acid/alkalinity ratio. - False
A combined sedimentation digestion unit is a type of package treatment plant. - True
Pretreatment can aid grease removal in primary clarifiers. - False
Sludge digesters always operate in an aerobic condition. - False
Suspended solids settling can be prevented in storage tanks by air addition. - False
Lime sludge is not corrosive to pump parts. - False
Chemical stabilization can be used on sludge. - True
