Removal of toxic and odorous organics from waste water by satura

Details Removal of toxic and odorous organics from waste water by satura Removal of toxic and odorous organics from waste water by satura

1979-05-07

1981-02-24

Cintins, Ivars C.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210670, 210694, C02F 128

Patent

active

042526434

ABSTRACT:
An adsorption process for the selective removal of naphthalenic hydrocarbons in the waste water from a petrochemical operation which comprises contacting the effluent waste water for relatively short periods with activated carbon which has become saturated with respect to non-naphthalenic organics. Contact of the waste water streams with the saturated carbon is continued until the breakthrough of naphthalenic compounds in the waste water exceeds a predetermined concentration, such as 2 ppm. It has been found that efficient removal of naphthalenic compounds can be effected by contacting the waste water for relatively short contact times, for example 10 minutes, notwithstanding the fact that the activated carbon has previously become saturated with respect to non-naphthalenic compounds.

REFERENCES:
patent: 3340316 (1967-09-01), Wackher et al.
patent: 4025426 (1977-05-01), Anderson et al.
Lawson et al., "Limitations of Activated Carbon Adsorption for Upgrading Petrochemical Effluents", AIChE Symposium Series-Water, (1973).
Paulson, "Adsorption as a Treatment of Refinery Effluent", American Petroleum Institute Division on Refining, (1970), pp. 693-722.
Giusti et al., "Activated Carbon Adsorption of Petrochemicals", Journal WPCF, vol. 46, No. 5, (May 1974), pp. 947-964.

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