Chemical Scrubbers
ERG has been supplying chemical scrubbers for odour control since 1978, and has installed more than 50 systems throughout the UK in the last 10 years. We have treated air flowrates from less than 1,000 up to 200,000 m3/hr.
Designed and built to BS4994 and benefiting from more than 30 years of experience and optimisation, ERG's scrubbers offer assured performance and competitive costing.
All our systems are custom-designed for the scrubbing duty required, and our scope of supply typically includes a packed tower scrubber with liquor recirculation pump and pipework, chemical storage and dosing system, air extraction fans, extraction ductwork, electrical control panel, outlet H2S monitoring system and stack.
Odorgard™ scrubbing
ERG is the UK's leading supplier of Odorgard™ catalytically enhanced scrubbers, using Odorgard™ catalyst from the speciality chemicals company Johnson Matthey.
Odorgard™ scrubbing has several advantages over traditional scrubbing.
- Simultaneous removal of H2S and a wide variety of other odorous compounds, including mercaptans, organic sulphides, ammonia, amines and many VOCs
- Guaranteed odour removal performance in a single scrubbing tower.
- Reduced chemical consumption, due to the catalyst chemistry.
ERG's Odorgard™ scrubber systems
Single and multi-stage scrubbing
Single stage scrubbing is used for simple applications where a basic scrubber is all that's required. Applications include odour control for waste water inlet works and treatment plants.
Multi-stage scrubbing is specified for more arduous duties combining high concentrations of diverse odours, for example ammonia, amines, hydrogen sulphide and mercaptans. Multi-stage scrubbing may also be combined with an initial venturi scrubber for dust removal and a final polishing dry media filter for insoluble VOC removal. Multistage scrubbers are frequently employed on sewage sludge applications and for sludge dryer off-gas treatment.