Module VII
This is when sewage effluents are sprinkled or placed on the soil surface where most of it evaporates or is taken up by plants.
What is low-rate irrigation?
This type of potable water is defined as treated wastewater that is transferred to an environmental water source that is then used for potable water by the public.
What is direct potable water?
Solid or dried manure spread on soil surface.
What is slinging?
This method of producing Class A biosolids increases the pH and inactivates viruses and bacteria.
What is liming?
These organisms are known for giving recycled water a foul taste and smell and using up oxygen to produce anoxic environments.
Centrifugation of sludge to increase solid content.
What is thickening?
This is a composting method that takes place in steel vessels where aeration and temperature are heavily controlled.
What is enclosed system?
These organisms are spread to households in the air by spores that travel through open windows and doors.
What are molds?
Reduction of solid content and inactivation of pathogens.
What is stabilization?
These ponds have small sludge generation and are used as pretreatment for high-BOD organic wastes with high fat and protein content.
What are anaerobic ponds?
The concentration of this type of bacteria is used to estimate the microbial quality of drinking water.
What is heterotrophic bacteria?
T/F: Aeration tank digestion is the most common wastewater treatment in the U.S.
The majority of endotoxin-related human diseases are associated with these type of issues.
What is pulmonary (lungs)?
This is the most common source of methane (CH4) produced by humans.
What are landfills?
T/F: Most contact with pathogens is thought to occur from our environment.