US 8,282,837 B2 · Method and system of destruction of volatile compounds in wastewater

Abstract

The invention proposes a method of destruction of volatile organic and inorganic compounds in wastewater, this method includes following stages: stripping the aforementioned volatile compounds in a stripping-chemisorption column; preliminary heating the gaseous medium containing these volatile compounds in a first heat regenerator; thermal, flare or thermo-catalytic oxidation of the volatile compounds in circulating gaseous medium; cooling the gaseous medium in a second heat regenerator; chemisorption of acidic gases from the gaseous medium in the stripping-chemisorption column with stripping at the same time additional amount of the volatile compounds from the wastewater. After specific period, direction of the gaseous medium flow is alternated. The proposed method can be executed at elevated temperature. The invention includes as well systems realizing the proposed method.

Claims38

Dependent claims

A system for processing water contaminated with volatile compounds, comprising:

a stripping unit including a first inlet for contaminated water, a second inlet for a circulating gaseous medium, and an outlet;
wherein the stripping unit is operative to strip volatile compounds from the contaminated water and into said circulating gaseous medium, and for extraction of oxidation products from said circulating gaseous medium;
an oxidation unit having an inlet coupled to said stripping unit outlet, to oxidize the volatile compounds stripped into said circulating gaseous medium, and to form oxidation products in said circulating gaseous medium;
an outlet from said oxidation unit for said circulating gaseous medium carrying said formed oxidation products coupled to the second inlet of said stripping unit;
and
a heat regeneration system to preheat said circulating gaseous medium carrying said stripped volatile compounds entering said oxidation unit from said stripping unit, and to cool said circulating gaseous medium carrying said formed oxidation products exiting said oxidation unit.

3 more elements

Dependencies are inferred from the claim text.

Method and system of destruction of volatile compounds in wastewater

Life of this patent

Method and system of destruction of volatile compounds in wastewater

Life of this patent

Abstract

Claims38