AN ARRANGEMENT FOR BIOLOGICAL CLEANING OF ORGANICALLY POLLUTED LIQUIDS COMPOSED OF BUILDING UNITS

摘要

1275245 Treating sewage CESKOSLOVENSKA AKADEMIE VED 9 July 1970 [10 July 1969] 33433/70 Heading C1C Liquid to be treated together with treating agents enters horizontal cylindrical bioflocculation space B1 by conduit 7 and is circulated in the direction of the arrows by the aerating means 4. The liquid passes to similar space B2 by connecting pipes 9 and is recirculated by a pump in one of the pipes 9. Liquid containing floccular particles passes to separation space D by inlet opening 1 via dearation space C. Liquid is filtered by its vertical passage through the imperfectly floating sludge blanket in space D and purified water passes to collecting troughs 11. Sludge is drained periodically at 10.