Texas Wastewater A ( Test 2)
TCEQ approves permits for domestic wastewater plants
and Permitting of industrial wastewater plants. - answers✔✔What is TCEQ doing to control, "point
source" pollution in the Texas waterways?
Minimum two feet per second velocity, with the smallest pump operating alone. Minimum four inch
diameter pipe, with 150 psi rating. - answers✔✔Describe proper design of force main wastewater lines.
Ratio of outside pipe diameter, (OD) to wall thickness (PVC) - answers✔✔What is Standard Dimension
Ratio?
to flow half full ,under normal conditions, at a minimum of two feet per second, and a maximum of ten
feet per second. - answers✔✔gravity wastewater lines are designed
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. - answers✔✔What is the standard chlorine
residual, and minimum contact time, on Texas wastewater permits?
As the complexity of an organization increases, the management function of management becomes
most important. - answers✔✔As the complexity of an organization increases, what management
function becomes most important?
Hypochlorous Acid (HOCl) - answers✔✔What is the effective chlorine disinfecting agent in disinfection?
it is much more effective at pH levels below 7 .above ph.of....7 the acid begins to be neutralized. -
answers✔✔Hypochlorous Acid
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. - answers✔✔What is the effluent chlorine residual
in Texas that is standard on permits and the minimum detention time? What is the maximum residual
allowed?
, 65 to 75% methane, 25 to 35% carbon dioxide, and 1 to 5% nitrogen. - answers✔✔Anaerobic digester
gas should contain?
low DO,
low organic loading,
septic wastes,
nutrient deficiencies, and.
high sulfur content - answers✔✔What are some of the causes of filaments in the aeration basin?
Good sludge quality, will have a predominance , of Ciliated protozoa. - answers✔✔Good sludge quality
will have a predominance of what organisms in the MLSS?
When an RBC is operating correctly, the slime will appear Grey to brown and have .05 to .1 inches thick
zoogloeal mass. - answers✔✔When an RBC is operating correctly, how will the slime appear on the
media?
24 inch opening and 48 inch inside diameter - answers✔✔According to design criteria, what are the
minimum allowable diameters for a manhole?
Contact Stabilization - answers✔✔What activated sludge process does not achieve complete
nitrification?
150 psi - answers✔✔In the selection of forced main wastewater piping, what is the minimum working
pressure?
.2 mg/L. - answers✔✔The oxygen depletion of BOD dilution water should not exceed
Minimum of one inch or twice the inlet pipe size whichever is greater. - answers✔✔What is the
minimum air gap when making water and wastewater connections?
1 inch - answers✔✔What is the minimum useful size pipe to prime a centrifugal pump?
TCEQ approves permits for domestic wastewater plants
and Permitting of industrial wastewater plants. - answers✔✔What is TCEQ doing to control, "point
source" pollution in the Texas waterways?
Minimum two feet per second velocity, with the smallest pump operating alone. Minimum four inch
diameter pipe, with 150 psi rating. - answers✔✔Describe proper design of force main wastewater lines.
Ratio of outside pipe diameter, (OD) to wall thickness (PVC) - answers✔✔What is Standard Dimension
Ratio?
to flow half full ,under normal conditions, at a minimum of two feet per second, and a maximum of ten
feet per second. - answers✔✔gravity wastewater lines are designed
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. - answers✔✔What is the standard chlorine
residual, and minimum contact time, on Texas wastewater permits?
As the complexity of an organization increases, the management function of management becomes
most important. - answers✔✔As the complexity of an organization increases, what management
function becomes most important?
Hypochlorous Acid (HOCl) - answers✔✔What is the effective chlorine disinfecting agent in disinfection?
it is much more effective at pH levels below 7 .above ph.of....7 the acid begins to be neutralized. -
answers✔✔Hypochlorous Acid
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. - answers✔✔What is the effluent chlorine residual
in Texas that is standard on permits and the minimum detention time? What is the maximum residual
allowed?
, 65 to 75% methane, 25 to 35% carbon dioxide, and 1 to 5% nitrogen. - answers✔✔Anaerobic digester
gas should contain?
low DO,
low organic loading,
septic wastes,
nutrient deficiencies, and.
high sulfur content - answers✔✔What are some of the causes of filaments in the aeration basin?
Good sludge quality, will have a predominance , of Ciliated protozoa. - answers✔✔Good sludge quality
will have a predominance of what organisms in the MLSS?
When an RBC is operating correctly, the slime will appear Grey to brown and have .05 to .1 inches thick
zoogloeal mass. - answers✔✔When an RBC is operating correctly, how will the slime appear on the
media?
24 inch opening and 48 inch inside diameter - answers✔✔According to design criteria, what are the
minimum allowable diameters for a manhole?
Contact Stabilization - answers✔✔What activated sludge process does not achieve complete
nitrification?
150 psi - answers✔✔In the selection of forced main wastewater piping, what is the minimum working
pressure?
.2 mg/L. - answers✔✔The oxygen depletion of BOD dilution water should not exceed
Minimum of one inch or twice the inlet pipe size whichever is greater. - answers✔✔What is the
minimum air gap when making water and wastewater connections?
1 inch - answers✔✔What is the minimum useful size pipe to prime a centrifugal pump?
