Texas On-Site Sewage Facilities (OSSF)
(Latest Update ) Questions
with Correct Answers {Grade A} 100%
Verified
Compensation - correct answer is the action of being paid a fair price for a proper
service.
Contact time - correct answer is the time in which effluent is in contact with a reacting
chemical or constituent.
Demand-dosed - correct answer systems deliver wastewater to the next component in
the treatment train when the wastewater becomes available. A pump activates when a
pre-determined volume of effluent flows into the pump tank. The flow patterns to the
next component are subject to the variations in water usage patterns from the source
Denitrification - correct answer is the process in which nitrates are transformed to
gaseous nitrogen. Denitrification occurs in anaerobic conditions.
,Detention time - correct answer is the amount of time wastewater spends in the onsite
wastewater treatment system. The longer the detention time, the better the quality of
treatment.
Dispersion - correct answer is the process by which wastewater mixes with
groundwater. Dispersion dilutes the remaining contaminants but does not remove
them
Dissolved Oxygen (DO) - correct answer is the concentration of oxygen dissolved in an
effluent.
Endocrine disruptors - correct answer include medicines, medicine metabolites,
antibiotics, and chemotherapy drugs. They can seriously alter the performance of a
system through their effect on the biological activity of organisms in the septic tank.
Facultative - correct answer organisms can survive in aerobic or anaerobic conditions.
, Failure - correct answer is a condition in which a component of or the entire system is
not performing its intended purpose.
Fats, oils, and grease (FOG) - correct answer in domestic wastewater will generally
originate in the kitchen or bathroom. Kitchen FOG usually comes from disposing of
animal- or vegetable-based food scraps down the sink and into the system.
Households using garbage disposals will have 30-40% more FOG than households not
using garbage disposals. Bath oils, sun tan lotions, and moisturizing creams are
bathroom sources of FOG that enter the wastewater stream.
Fecal coliform - correct answer is an indicator microorganism that can be cultured in
standard tests to indicate contamination. Fecal coliform originates in the digestive
system of humans and animals.
Filtration - correct answer works by moving wastewater through pore spaces in
various media. Physical treatment processes can remove large particles, pathogens,
and suspended solids. The smaller the pore space size, the smaller the size particle or
microorganism that can be physically trapped.
(Latest Update ) Questions
with Correct Answers {Grade A} 100%
Verified
Compensation - correct answer is the action of being paid a fair price for a proper
service.
Contact time - correct answer is the time in which effluent is in contact with a reacting
chemical or constituent.
Demand-dosed - correct answer systems deliver wastewater to the next component in
the treatment train when the wastewater becomes available. A pump activates when a
pre-determined volume of effluent flows into the pump tank. The flow patterns to the
next component are subject to the variations in water usage patterns from the source
Denitrification - correct answer is the process in which nitrates are transformed to
gaseous nitrogen. Denitrification occurs in anaerobic conditions.
,Detention time - correct answer is the amount of time wastewater spends in the onsite
wastewater treatment system. The longer the detention time, the better the quality of
treatment.
Dispersion - correct answer is the process by which wastewater mixes with
groundwater. Dispersion dilutes the remaining contaminants but does not remove
them
Dissolved Oxygen (DO) - correct answer is the concentration of oxygen dissolved in an
effluent.
Endocrine disruptors - correct answer include medicines, medicine metabolites,
antibiotics, and chemotherapy drugs. They can seriously alter the performance of a
system through their effect on the biological activity of organisms in the septic tank.
Facultative - correct answer organisms can survive in aerobic or anaerobic conditions.
, Failure - correct answer is a condition in which a component of or the entire system is
not performing its intended purpose.
Fats, oils, and grease (FOG) - correct answer in domestic wastewater will generally
originate in the kitchen or bathroom. Kitchen FOG usually comes from disposing of
animal- or vegetable-based food scraps down the sink and into the system.
Households using garbage disposals will have 30-40% more FOG than households not
using garbage disposals. Bath oils, sun tan lotions, and moisturizing creams are
bathroom sources of FOG that enter the wastewater stream.
Fecal coliform - correct answer is an indicator microorganism that can be cultured in
standard tests to indicate contamination. Fecal coliform originates in the digestive
system of humans and animals.
Filtration - correct answer works by moving wastewater through pore spaces in
various media. Physical treatment processes can remove large particles, pathogens,
and suspended solids. The smaller the pore space size, the smaller the size particle or
microorganism that can be physically trapped.
