Anaerobic Digestion FAQs

Anaerobic digestion is a biological process for decomposing various materials that is primarily used for the production of biogas. Anaerobic digestion involves the breakdown (decomposition) of organic waste materials such as sewage and slurry.

While both chopper and macerater pumps will break down fibrous materials, a chopper pump is a heavier-duty option designed for particularly difficult applications such as handling raw slurry. Macerator pumps are aimed at handling softer solids, such as general wastewater.

Piston pumps are a kind of positive displacement pump where a piston moves the fluid. They are designed with liquids containing heavy solids in mind, with Cri-man's PLD system being capable of handling up to 18% total solids.

ATEX is the name of two European Directives for controlling explosive atmospheres, they provide guidelines on the categorisation of ATEX Zones and the use of equipment in these areas. T-T offers a range of products suitable for ATEX Zone 0 installations, defined as "part of a hazardous area in which a flammable atmosphere is continually present or present for long periods.".

• FLO101 Float Switch - contains a special low current microswitch and ATEX-certified barrier.
• Cri-Man PTS Chopper Pump - can be supplied with either a standard or fully ATEX-certified motor.