Question

What are the various types of on site sewage disposal systems

Answer 1

There are numerous small foot-print sewage treatment systems which is what I assume you are asking about. Sewage disposal would be considered pumping from a septic tank and land applying with no treatment (which is still allowed in many states). Large communities of course have complex collection systems that deliver sanitary wastewater (or sewage) to large advanced treatment facilities.

For on-site treatment there are fixed film beds that spray the wastewater over various types of media i.e. foam cubes, plastic media, wood chips, etc. that allow for some treatment. There are RBCs (Rotating Biological Contactors) that have been employed in small on-site situations ( I have operated one for a trailer park for instance). Then the really good treatment systems like SBR’s (Sequencing Batch Reactors) give secondary treatment as well as any large scale facility.

There are many more that have been developed and are still being developed all the time, but these are the three most common I have come across that are not lagoons or traditional municipal treatment facilities.

Answer 2

Answer:

An onsite sewage system consists of a septic tank for settling and treatment as well as a sub-surface disposal field.