Paques I.p.b.v.

Paques B.v.

Petrus Cornelis Van Der Heijden

Sjoerd Hubertus Jozef Vellinga

Erik Van Zessen

Jacco Huisman

Johannes Petrus Paulus Tholen

Jan Willem Albertus Bruins

Hydrogen sulfide can be removed from a liquid effluent of an anaerobic reactor, by subsequently: &#x2014;contacting the effluent liquid in counter current with a treated product gas of the anaerobic reactor to absorb hydrogen sulfide in the gas, &#x2014;collecting the desulfurized effluent liquid after said contacting, &#x2014;discharging at least part of the collected desulfurized effluent recirculation liquid as a treated effluent. To a remaining part of the desulfurized effluent waste water can be added and mixed, and the mixed water can be fed to the anaerobic reactor. Spent gas of the contacting step can be combined with sulfide-containing product gas of the anaerobic reactor and treated by desulfurization.

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Heerenveen, Netherlands

Petrus Cornelis Van Der Heijden