Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1975-11-25
1977-07-12
Spear, Jr., Frank A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
195 3R, 210 15, 210 51, C02C 102
Patent
active
040352897
ABSTRACT:
Purification of the effluents from mineral oil drillings, carried out on land, for permitting the discharge of the residual waters into the natural surroundings. First, microorganisms are cultivated on a volume of the effluent, in order to make them capable of digesting the impurities of the effluent. The culture, thus obtained, is then developed in the mass of the effluent to be treated until the BOD is reduced to the required limit. This treatment is preferably followed by a flocculation with chemical agents in the known manner. This anti-pollution treatment permits the regulations in force to be applied in all locations where the drillings are undertaken, whatever may be the auxiliary fluids used in the drilling operation.
REFERENCES:
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patent: 3660278 (1972-05-01), Mimura et al.
patent: 3728253 (1973-04-01), Kaufman
patent: 3763038 (1973-10-01), Misaka et al.
patent: 3871956 (1975-03-01), Azarowics
patent: 3933627 (1976-01-01), Fusey
Davis, Petroleum Microbiology, 1967, pp. 486-498.
Gratacos Jaime
Guillerme Michel
Sirvins Andre
Tramier Bernard
Societe Nationale Elf Aquitaine (Production)
Spear, Jr. Frank A.
Spitzer Robert H.
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