Activated sludge effluent treatment plant - with single compartmented vessel for sedimentation, aeration and biodegradation

摘要

In the mechanical/biological purificn. of biodegradable domestic and industrial effluent using activated sludge and blowing in air for activated and blowing in air for activation, of the known type with compartments for carrying out preclarification, oxidn. a d decantation (a) a chamber is provided sub-divided into at least three compartments by means of walls running from a central zone, at least three of these compartments being interconnected (b) a connecting opening provided with closure means is provided at the bottom of the partition wall sepg. the first compartments from the second, while the second and third compartments are connected at the top as well as at the bottom via an opening for the return of settled sludge from the third decantation compartment to the second biological oxidation compartment. Low installation cost and reliable operation even on bringing back into operation after being stopped for a long period.