Purifying treatment for effluents of mineral oil drillings

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow

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195 3R, 210 15, 210 51, C02C 102

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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:
patent: 2259419 (1941-10-01), Hefley et al.
patent: 3152983 (1964-10-01), Davis et al.
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.

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