Texas On-Site Sewage Facilities (OSSF) – Questions And
Answers (100% Correct)
Acceptable Right Ans - is a condition in which a component is performing
its intended purpose and is considered to be in an operable state.
Adsorption Right Ans - allows contaminants in wastewater to bond with
media particles to slow the rate of movement through the media and to allow
uptake of nutrients by plants and microorganisms in the media.
Aerobic Right Ans - is a condition where oxygen is required. Aerobic
microorganisms require oxygen to live and breakdown pathogens in
wastewater.
Alkalinity Right Ans - refers to a wastewater's ability, or inability, to
neutralize acids.
Ammonia Right Ans - is a compound of nitrogen and hydrogen with the
formula NH3. The main uses of ammonia are in the production of fertilizers,
and it is also an ingredient in certain household glass cleaners. The form of
nitrogen in septic tanks is ammonium.
Anaerobic Right Ans - is a condition in which there is no oxygen present.
Anaerobic organisms get their oxygen supply by breaking down chemical
compounds that contain oxygen.
Aquifer Right Ans - is a geological formation that can store, transmit, and
yield water to a well or spring.
Assimilation Right Ans - is the transformation of a nutrient into another
form that can be digested by an organism.
Biochemical Right Ans - is a treatment process that combines biological
treatment and chemical treatment. The two processes overlap and sometimes
it is hard to distinguish which treatment activities are biological and which
are chemical.
, Biochemical Oxygen Demand (BOD5) Right Ans - is the amount of oxygen
consumed by microbes during the decomposition of organic matter. It is an
indicator of the overall strength of the wastewater.
Biological oxidation Right Ans - occurs when bacteria break down organic
matter into water and carbon dioxide (CO2). Oxidation reduces BOD5,
removes pathogens, and works best under aerobic conditions.
Biological processes Right Ans - for treatment include natural die-off,
predation, biological oxidation, and mineralization.
biomat Right Ans - A ______is the biological buildup of wastewater treating
organisms on a treatment media.
Blackwater Right Ans - includes flush water from toilets and urinals and
wastewater from food preparation sinks. Blackwater contains relatively
higher concentrations of nitrogen and human pathogens than graywater and
decomposes more slowly.
Cation exchange Right Ans - allows contaminants in wastewater to bond
with media particles to slow the rate of movement through the media and to
allow uptake of nutrients by plants and microorganisms in the media.
Chemical Oxygen Demand (COD) Right Ans - is a measure of the amount of
organic matter oxidized by a strong chemical oxidant.
Chemical processes Right Ans - that can treat wastewater include cation
exchange, adsorption, and precipitation.
Chlorine residual Right Ans - is the total amount of chlorine remaining in
effluent at the end of a specified contact time following chlorination.
Clean water Right Ans - is water that never comes into contacts with
humans but that is discharged into the wastewater stream. Clean water
sources include condensate from ice-machine drains, condensate from air
conditioners and coolers, footing drains or basement drains, and water
treatment devices such as water softeners, reverse osmosis units and anion
exchange processes.
Answers (100% Correct)
Acceptable Right Ans - is a condition in which a component is performing
its intended purpose and is considered to be in an operable state.
Adsorption Right Ans - allows contaminants in wastewater to bond with
media particles to slow the rate of movement through the media and to allow
uptake of nutrients by plants and microorganisms in the media.
Aerobic Right Ans - is a condition where oxygen is required. Aerobic
microorganisms require oxygen to live and breakdown pathogens in
wastewater.
Alkalinity Right Ans - refers to a wastewater's ability, or inability, to
neutralize acids.
Ammonia Right Ans - is a compound of nitrogen and hydrogen with the
formula NH3. The main uses of ammonia are in the production of fertilizers,
and it is also an ingredient in certain household glass cleaners. The form of
nitrogen in septic tanks is ammonium.
Anaerobic Right Ans - is a condition in which there is no oxygen present.
Anaerobic organisms get their oxygen supply by breaking down chemical
compounds that contain oxygen.
Aquifer Right Ans - is a geological formation that can store, transmit, and
yield water to a well or spring.
Assimilation Right Ans - is the transformation of a nutrient into another
form that can be digested by an organism.
Biochemical Right Ans - is a treatment process that combines biological
treatment and chemical treatment. The two processes overlap and sometimes
it is hard to distinguish which treatment activities are biological and which
are chemical.
, Biochemical Oxygen Demand (BOD5) Right Ans - is the amount of oxygen
consumed by microbes during the decomposition of organic matter. It is an
indicator of the overall strength of the wastewater.
Biological oxidation Right Ans - occurs when bacteria break down organic
matter into water and carbon dioxide (CO2). Oxidation reduces BOD5,
removes pathogens, and works best under aerobic conditions.
Biological processes Right Ans - for treatment include natural die-off,
predation, biological oxidation, and mineralization.
biomat Right Ans - A ______is the biological buildup of wastewater treating
organisms on a treatment media.
Blackwater Right Ans - includes flush water from toilets and urinals and
wastewater from food preparation sinks. Blackwater contains relatively
higher concentrations of nitrogen and human pathogens than graywater and
decomposes more slowly.
Cation exchange Right Ans - allows contaminants in wastewater to bond
with media particles to slow the rate of movement through the media and to
allow uptake of nutrients by plants and microorganisms in the media.
Chemical Oxygen Demand (COD) Right Ans - is a measure of the amount of
organic matter oxidized by a strong chemical oxidant.
Chemical processes Right Ans - that can treat wastewater include cation
exchange, adsorption, and precipitation.
Chlorine residual Right Ans - is the total amount of chlorine remaining in
effluent at the end of a specified contact time following chlorination.
Clean water Right Ans - is water that never comes into contacts with
humans but that is discharged into the wastewater stream. Clean water
sources include condensate from ice-machine drains, condensate from air
conditioners and coolers, footing drains or basement drains, and water
treatment devices such as water softeners, reverse osmosis units and anion
exchange processes.
