Liquid purification or separation – Processes – Chemical treatment
Patent
1990-05-12
1994-08-16
McCarthy, Neil
Liquid purification or separation
Processes
Chemical treatment
210916, C02F 174
Patent
active
053384636
ABSTRACT:
Waste water chemical oxygen demand is reduced from a waste water by passing the water in the presence of an oxidizing agent through an adsorbent porous solid substrate, preferably zeolite A, zeolite X, zeolite Y, ZSM-5, erionite, chabasite or activated carbon which has been partially ion exchanged with a water insoluble metal compound, preferably copper (Cu), that facilitates oxidation of the components in the waste water that increase its chemical oxygen demand, such as sulfide, thiosulfate, sulfite, mercaptan, or disulfide. The preferred oxidizing agent is air.
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Harris G. L.
McCarthy Neil
McKillop A. J.
Mobil Oil Corporation
Santini D. P.
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