Process for the purification of groundwater

Details Process for the purification of groundwater Process for the purification of groundwater

Filed on

1995-09-18

Date issued

1997-10-28

Examiner

Cintins, Ivars

Patent Class

Liquid purification or separation

SubClass

Processes

SubSubClass

Ion exchange or selective sorption

Other Related Categories

210673, 210692, 210909, C02F 128

Type

Patent

Status

active

Patent number

056814763

Description

ABSTRACT:
Polluted groundwater is purified by separating off solids and adsorbing dissolved organic compounds to an adsorber resin. The adsorbed organic compounds are desorbed using steam and the adsorber resin is regenerated using an acid and an oxygen-containing gas. The process makes it possible to separate aromatic and halogenated hydrocarbons off of heavily polluted groundwater to the extent that the groundwater can be added to flowing surface water without reservation. The purified water can, if appropriate, be used as cooling water, or after further biological purification, as drinking water.

REFERENCES:
patent: 3275548 (1966-09-01), Walters
patent: 3520806 (1970-07-01), Haigh
patent: 3531463 (1970-09-01), Gustafson
patent: 3985648 (1976-10-01), Casolo
patent: 4042498 (1977-08-01), Kennedy

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