Liquid purification or separation – Processes – Treatment by living organism
Patent
1993-12-14
1996-04-09
Wyse, Thom
Liquid purification or separation
Processes
Treatment by living organism
210614, 210624, 210630, C02F 330
Patent
active
055058620
ABSTRACT:
In a method and a device for sewage purification, sewage is purified by continuously passing it through several stages of treatment, wherein the passage of sewage is regulated by a process control device and is monitored by sensors. Treatment ensues in physical processing stages, pre-flotation stages, two-step biological clarification stages and one post-flotation stage. The pre-flotation stages as well as the biological clarification stages are each provided with gas-water mixers, and the pre-flotation stages, the biological clarification stages and the post-flotation stage are provided with solid foam separators having outlet channels. Clear water from a clear water overflow basin is supplied to the individual stages through the gas-water mixers and through a clear water return pipe. It is also possible to provide chemical treatment prior to biological clearing, to provide clear water recycling for additional treatment, and to provide solids treatment and a reduction stage. An aquatritor, a bioreactor and a four chamber system are also provided. This method is also suitable for use in a portable device having a compact construction.
REFERENCES:
patent: 4976863 (1990-11-01), Stearns
patent: 5364529 (1994-11-01), Morin et al.
Greenberg Laurence A.
Lerner Herbert L.
Wyse Thom
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