Hydrogen Sulphide (H2S) scrubbers in production unit in Ostend (Belgium). The scrubbers transform H2S in gaseous form into Na2S, which further oxidises to Na2SO4 in a separate reactor. The Hydrogen Sulphide at the scrubber outlet is below the odor treshold, which is very low: 0,0005 PPM. The scrubber outlet is continuously monitored by a Hydrogen Sulphide detector.

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