Process for the anaerobic biological purification of wastewater

Details Process for the anaerobic biological purification of wastewater Process for the anaerobic biological purification of wastewater

1984-07-26

1985-11-05

Wyse, Thomas

Liquid purification or separation

Processes

Treatment by living organism

210617, C02F 328

Patent

active

045512507

ABSTRACT:
In a process for the anaerobic biological purification of wastewater containing organic pollutants, the wastewater to be purified is conducted through two series-connected reactors (2 and 5) operated under anaerobic conditions. In order to achieve a shortening of the residence time for the wastewater to be purified and thereby a savings in total reactor volume, the pollutants contained in the wastewater, which are present partially in the undissolved, partially in the macromolecular state and are only slowly metabolizable under anaerobic conditions, are retained in the first reactor (2) by means of a filter medium (3) arranged in the first reactor (2). On the other hand, pollutants initially present in the dissolved condition in the wastewater and which are readily degradable by anaerobic microorganisms, are further conducted directly through the first reactor, without substantial conversion, into the second reactor (5) through a connecting conduit (4). In the first reactor (2), the residence time of only the slowly metabolizable pollutants is determined to be sufficient so that the latter are degraded to low-molecular, dissolved fragments. Subsequently, the dissolved fragments are introduced into the second reactor (5) together with the initially rapidly degradable pollutants.

REFERENCES:
patent: 4182675 (1980-01-01), Jeris
patent: 4253947 (1981-03-01), Fan et al.
patent: 4256573 (1981-03-01), Shimodaira et al.
patent: 4351729 (1982-09-01), Witt
patent: 4444664 (1984-04-01), Treyssac

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