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- DictionarySep·tic tank/ˈseptik ˌtaNGk/
noun
- 1. a tank, typically underground, in which sewage is collected and allowed to decompose through bacterial activity before draining by means of a leaching field.
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- Septic tank
Method for basic wastewater treatment
A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater (sewage) flows for basic sewage treatment. Settling and anaerobic digestion processes reduce solids and organics, but the treatment efficiency is only moderate (referred to as "primary treatment"). Septic tank systems are a type of simple onsite sewage facility. They can be used in ar... Wikipedia
