Methods for reducing and separating emulsions and homogeneous co

Details Methods for reducing and separating emulsions and homogeneous co Methods for reducing and separating emulsions and homogeneous co

1993-07-20

1995-05-02

Wyse, Thomas

Liquid purification or separation

Processes

Treatment by living organism

210631, 210708, 210799, 210802, 210DIG5, C02F 140, C02F 300

Patent

active

054116651

ABSTRACT:
A system for the reduction and separation of highly emulsified and/or immiscible components mixed in a fluid, particularly useful for treating waste water contaminated with oils and oily emulsions, as from depleted oil wells, vehicle washing stations, and meat rendering plants. The system is operative for reducing the amount of organic and inorganic contaminants, and is particularly suitable for reducing the amount of oil, with oil-consuming microorganisms, and separating oil that is not consumed within the system from the water so that the oil may be recycled and the water discharged into wetlands or sanitary sewers without further treatment. The system comprises a multi-stage, recirculating series of treatment tanks. In a first stage, the fluid is recirculated through a treatment loop where the fluid is aerated and then passed through a coalescer. Organic metabolizing microorganisms that contribute to de-emulsification and contaminant reduction within the system are introduced, together with a superoxygenated catalyst containing microorganism nutrients. The coalescer is preferably a horizontal stack of evenly spaced apart polypropylene plates with sinusoidal corrugations running along the plane of the plates. In subsequent treatment stages, the fluid is recirculated through filters prior to discharge from the system.

REFERENCES:
patent: 3856667 (1974-12-01), Azarowicz
patent: 3965004 (1976-06-01), Garber
patent: 4374029 (1983-02-01), Jaisinghani
patent: 4432887 (1984-02-01), Zajic et al.
patent: 4722800 (1988-02-01), Aymong
patent: 4897206 (1990-01-01), Castelli
patent: 5242604 (1993-09-01), Young et al.

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