Question

The term “septic” refers to ____________

(a) anaerobic bacterial environment that develops in the tank

(b) refers to safety and precaution

(c) drainage of waste materials

(d) aerobic bacterial environment that develops in the tank

This question was posed to me in an international level competition.

This intriguing question comes from Design of Septic Tanks topic in portion Road Estimating, Sanitary and Water Supply Work of Civil Engineering Drawing

Answer 1

Correct choice is (a) anaerobic bacterial environment that develops in the tank

The best I can explain: The term “septic” refers to the anaerobic bacterial environment that develops in the tank which decomposes or mineralizes the waste discharged into the tank. Septic tanks can be coupled with other onsite wastewater treatment units such as biofilters or aerobic systems involving artificially forced aeration.