Uop Lcc

Honeywell International Inc.

Alliedsignal Inc.

William G Sheridan

Karl L Hasel

Francis Stephen Lupton

F Stephen Lupton

Marion R Surgi

Rachel E Hanson

A method is presented for biological removal of contaminants like sulfide from ground waters and industrial waters. A fixed film compartmentalized bioreactor or bioreactors are used to convert sulfide to elemental sulfur and the subsequent conversion of the elemental sulfur to sulfates. The present invention uses a packed bed bioreactor configuration that uses packing material to maximize the concentration of sulfide oxidizing bacteria.

Digestion of elemental sulfur in bioreactor during biological oxidation of sulfide in wastewater and groundwater

A method is presented for biological removal of contaminants like sulfide from ground waters and industrial waters. A portion of the bioreactor effluent water is recycled to the bioreactor and the sulfide oxidizing bacteria by biological oxidation oxidizes sulfides in the water to produce soluble sulfates. The present invention uses a packed bed bioreactor configuration that uses packing material to maximize the concentration of sulfide oxidizing bacteria.

Non-stripping bioreactor for biological sulfide oxidation from wastewaters and groundwaters containing hydrogen sulfide

A biological system for removing selenium from waste water comprises a first immobilized cell bioreactor (ICB) and a selenide removal module. The first ICB comprises a chamber having a substrate housed therein and situated to contact the waste water flowing therethrough during use. Anaerobic microorganisms are supported on the substrate, and comprise selenium respiring bacteria capable of reducing selenates and selenites to insoluble elemental selenium and/or sulfate reducing bacteria capable of reducing selenates and selenites to insoluble elemental selenium or to soluble selenides. The selenide removal module includes metallic or oxidized iron compounds capable of chemically reacting with selenide or sulfide compounds in the waste water to form iron selenide or iron sulfide precipitates.

System and methods for biological selenium removal from water

Tis invention relates to a process for reducing the concentration of an organic pollutant such as phenol in an aqueous stream which comprises passing the stream through a bioreacter containing a plurality of biologically active particles comprising a hydrophobic polyurethane substrate having an effective amount of one or more aerobic microorganism capable of metabolizing at least one of said organic materials on; in or on and in said substrate in the absence or in the substantial absence of a carbon absorbent.

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Naperville, IL, United States of America

William G Sheridan