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1. (WO2017153361) BIOLOGICAL REMOVAL OF MICROPOLLUTANTS FROM WASTEWATER

Pub. No.:    WO/2017/153361    International Application No.:    PCT/EP2017/055234
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Mar 08 00:59:59 CET 2017
IPC: C02F 3/12
C02F 3/30
C02F 3/10
C02F 3/34
C02F 101/30
Applicants: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
Inventors: CHRISTENSSON, Magnus
WELANDER, Thomas
Title: BIOLOGICAL REMOVAL OF MICROPOLLUTANTS FROM WASTEWATER
Abstract:
The invention pertains to a method (200, 300, 400) of at least partly removing at least one micropollutant from wastewater (104) comprising carbogenous compounds and at least one micropollutant. The method comprising the steps of: (a) dividing the wastewater (104) into a main stream (105) and a side stream (106); (b) treating main stream (105) with bacteria to reduce the content of carbogenous compounds to provide depleted wastewater (107) comprising at least one micropollutant; (c) treating the depleted wastewater (107) with a second portion of microorganisms (162), having the ability of degrading the at least one micropollutant, to, at least partly, remove the at least one micropollutant thereby providing treated water (170), wherein the second portion of microorganisms (162) have been enriched by feeding the side stream (106) to it before using the second portion of microorganisms (162) in treating the depleted wastewater (107); and (d) feeding a first portion of microorganisms (161), having the ability of degrading the at least one micropollutant, with the side stream (106), to enrich them for subsequent use in treating the depleted wastewater (107) to at least partly remove the at least one micropollutant.