Liquid purification or separation – With heater or heat exchanger – Diverse separators
Patent
1976-03-15
1978-01-03
Wyse, Thomas G.
Liquid purification or separation
With heater or heat exchanger
Diverse separators
210185, 210187, 210256, C02C 116
Patent
active
040665500
ABSTRACT:
Apparatus are disclosed for an anaerobic process in three stages having progressively higher temperatures up to 75.degree. C. for digesting raw household sewage with methane-forming thermophilic bacteria, in which dolomite is added to control the pH of the system within the range 6.0-7.5. After a sterilization fourth stage at 82.degree. C. or greater, the effluent is treated in a ground filter. Heat is countercurrently transferred from the sterilization stage effluent to the substrate of the digestion stages. The apparatus for carrying out this process has an underlying heat-exchange compartment and four concentric compartments, of which the innermost is the sterilization stage compartment containing a heating means and the outermost compartments are flow chambers for sequentially digesting the sewage in psychrophilic, mesophilic, and thermophilic stages, prior to sterilizing. The thermophilic stage contains a micron-size filter upon which a bacterial slime forms and which passes a sediment-free, treated effluent. Sterilized effluent from the fourth stage passes through the underlying heat-exchange compartment having the form of a truncated cone for heat exchange to the bottoms of the three concentric flow chambers.
REFERENCES:
patent: RE12272 (1904-10-01), Conn
patent: 603327 (1898-05-01), Franke
patent: 2103434 (1937-12-01), Pennebaker
LandOfFree
Apparatus for sewage treatment with countercurrent heat transfer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for sewage treatment with countercurrent heat transfer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for sewage treatment with countercurrent heat transfer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-279690