What is the difference between a silage tank, a septic tank and a treatment plant?
A silage tank or cesspit collects raw effluent and has to be emptied when full. A septic tank separates the solids from the liquids; the liquid remaining is released on to the land via network of perforated pipes called a soakaway. A treatment plant works like a septic tank but then treats the separated liquid so it may be discharged (with EA approval) to a watercourse, wet ditch, pond with an overflow or a soakaway.
