Nature & Environment
Microbes – friend or foe?
...works (shown schematically in Figure 5), it is first filtered to remove large objects (e.g. condoms, tampons and cigarette ends) which have got into the system. These usually go to a landfill site or incinerator. The remaining material is then allowed to ‘settle’so that much of the solid material drops to the bottom of a tank. This solid material is then removed and...