Texas Wastewater A ( Test 2)
Questions With Correct Answers
What is TCEQ doing to control, "point source" pollution in the Texas waterways? -
CORRECT ANSWER-TCEQ approves permits for domestic wastewater plants
and Permitting of industrial wastewater plants.
Describe proper design of force main wastewater lines. - CORRECT ANSWER-
Minimum two feet per second velocity, with the smallest pump operating alone.
Minimum four inch diameter pipe, with 150 psi rating.
If an operations company ceases its operation or is sold such that the control of the
company is transferred to another party, - CORRECT ANSWER-the company's
operations certificate is revoked
The sludge from a primary clarifier should contain what percent solids? - CORRECT
ANSWER-4% to 6%
What are the hazards of using powdered activated carbon? - CORRECT ANSWER-fire,
inhalation,
uncomfortable working conditions
How often must a facility conduct TCLP on its sludge if its sludge disposal is equal to or
greater than 15,000 metric tons annually? - CORRECT ANSWER-monthly
Most gas protection instruments do not latch. That means that - CORRECT ANSWER-
the instrument stops alarming, when removed from the contaminated atmosphere.
, What is Standard Dimension Ratio? - CORRECT ANSWER-Ratio of outside pipe
diameter, (OD) to wall thickness (PVC)
gravity wastewater lines are designed - CORRECT ANSWER-to flow half full ,under
normal conditions, at a minimum of two feet per second, and a maximum of ten feet per
second.
What is the standard chlorine residual, and minimum contact time, on Texas wastewater
permits? - CORRECT ANSWER-1 milligram per liter for a minimum 20 minutes
detention time at peak flow. However, no chlorine residual needed, if detention time is
greater than 21 days.
As the complexity of an organization increases, what management function becomes
most important? - CORRECT ANSWER-As the complexity of an organization increases,
the management function of management becomes most important.
What is the effective chlorine disinfecting agent in disinfection? - CORRECT ANSWER-
Hypochlorous Acid (HOCl)
Hypochlorous Acid - CORRECT ANSWER-it is much more effective at pH levels below
7 .above ph.of....7 the acid begins to be neutralized.
What is the effluent chlorine residual in Texas that is standard on permits and the
minimum detention time? What is the maximum residual allowed? - CORRECT
ANSWER-The Texas standard, is 1 milligrams per liter, for a minimum 20 minutes
detention time, at peak flow. Maximum residual allowed, is 4 milligrams per liter.
Anaerobic digester gas should contain? - CORRECT ANSWER-65 to 75% methane, 25
to 35% carbon dioxide, and 1 to 5% nitrogen.
Questions With Correct Answers
What is TCEQ doing to control, "point source" pollution in the Texas waterways? -
CORRECT ANSWER-TCEQ approves permits for domestic wastewater plants
and Permitting of industrial wastewater plants.
Describe proper design of force main wastewater lines. - CORRECT ANSWER-
Minimum two feet per second velocity, with the smallest pump operating alone.
Minimum four inch diameter pipe, with 150 psi rating.
If an operations company ceases its operation or is sold such that the control of the
company is transferred to another party, - CORRECT ANSWER-the company's
operations certificate is revoked
The sludge from a primary clarifier should contain what percent solids? - CORRECT
ANSWER-4% to 6%
What are the hazards of using powdered activated carbon? - CORRECT ANSWER-fire,
inhalation,
uncomfortable working conditions
How often must a facility conduct TCLP on its sludge if its sludge disposal is equal to or
greater than 15,000 metric tons annually? - CORRECT ANSWER-monthly
Most gas protection instruments do not latch. That means that - CORRECT ANSWER-
the instrument stops alarming, when removed from the contaminated atmosphere.
, What is Standard Dimension Ratio? - CORRECT ANSWER-Ratio of outside pipe
diameter, (OD) to wall thickness (PVC)
gravity wastewater lines are designed - CORRECT ANSWER-to flow half full ,under
normal conditions, at a minimum of two feet per second, and a maximum of ten feet per
second.
What is the standard chlorine residual, and minimum contact time, on Texas wastewater
permits? - CORRECT ANSWER-1 milligram per liter for a minimum 20 minutes
detention time at peak flow. However, no chlorine residual needed, if detention time is
greater than 21 days.
As the complexity of an organization increases, what management function becomes
most important? - CORRECT ANSWER-As the complexity of an organization increases,
the management function of management becomes most important.
What is the effective chlorine disinfecting agent in disinfection? - CORRECT ANSWER-
Hypochlorous Acid (HOCl)
Hypochlorous Acid - CORRECT ANSWER-it is much more effective at pH levels below
7 .above ph.of....7 the acid begins to be neutralized.
What is the effluent chlorine residual in Texas that is standard on permits and the
minimum detention time? What is the maximum residual allowed? - CORRECT
ANSWER-The Texas standard, is 1 milligrams per liter, for a minimum 20 minutes
detention time, at peak flow. Maximum residual allowed, is 4 milligrams per liter.
Anaerobic digester gas should contain? - CORRECT ANSWER-65 to 75% methane, 25
to 35% carbon dioxide, and 1 to 5% nitrogen.
