19.3  Collection, storage and treatment of liquid waste

There are different sanitation technologies used to collect and store liquid waste. Some of them also treat the waste and produce useful byproducts. The various different systems are used in different circumstances depending on the location, available resources and type of waste. In this section, we will describe septic tanks and anaerobic biogas reactors. We will also briefly describe the type of centralised treatment system that may be found in larger towns and cities.