Process and apparatus for the aerobic biological purification of liquid wastes containing organic pollutants
Patent
·
OSTI ID:6295458
A process and apparatus for the purification of effluent waters containing organic pollutants by a rapid biological oxidation (Activated sludge) process characterized in that the liquid to be purified is introduced into a tank containing a liquid having a high biomass concentration. Liquid is drawn from the tank and reintroduced through an aerating device in such a way as to produce rotation of the liquid in the tank to the extent that a vortex is produced on the surface. A part of the liquid taken from the tank is strayed on to the vortex and a proportion passed to a mechanical separating means that separates sludge from the liquid and a proportion of the separated sludge is reintroduced directly in to the tank. The liquid from which the sludge has been removed constitutes the purified effluent.
- Assignee:
- Unisearch Ltd (Australia)
- Patent Number(s):
- US 4244815
- OSTI ID:
- 6295458
- Country of Publication:
- United States
- Language:
- English
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