Waste water sludge thickener with odor control

Details Waste water sludge thickener with odor control Waste water sludge thickener with odor control

1985-06-25

1987-12-08

Sadowski, David

Liquid purification or separation

Processes

Treatment by living organism

210621, 210622, 210758, 210765, C02F 172

Patent

active

047117214

ABSTRACT:
In a sludge thickener, supernatant fluid is drawn off via peripheral ducts and oxygenated at a suitable location. The supernatant fluid is thereafter reintroduced into the thickener via diffusers distributed transversely of the thickener and intermediate the peripheral ducts. The generation of nauseating smells is thereby prevented, and an advantageous increase of the concentration of the sludges is attained.

REFERENCES:
patent: 4082671 (1978-04-01), Kelly
patent: 4163712 (1979-08-01), Smith
patent: 4173532 (1979-11-01), Keoteklian
Wastewater Treatment Plant Design; Sludge Preparation Drying, and Reduction, p. 455, 1977, Joint Committee of Water Pollution Cont. Fed. and the Am. Soc. of Civil Eng., Wash. D.C.
Frenzel, H. J. et al., "Abbau von Filtratwassern . . .", Das Gas und Wasserfach, vol. 118, Jan. 1977, pp. 24-29.

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