Two Systems, One Solution –
Dual-System Package for
High-Integrity Gas and Effluent Treatment
When a long-standing client unexpectedly lost access to shared gas scrubbing and effluent treatment infrastructure at a neighbouring plant, ERG Hygrade was commissioned to rapidly deliver a complete, self-contained replacement system — fabricated entirely in-house and tailored to the client’s specific process needs.
The project comprised two distinct but interrelated equipment packages:
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A two-stage vertical packed tower scrubber system for removing highly concentrated chlorine gas (Cl₂) from air streams prior to atmospheric discharge
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A Hydecat™ reactor unit to safely treat and neutralise sodium hypochlorite (NaOCl) effluent arising from scrubber blowdown
Both systems were precision-built using corrosion-resistant plastic materials, with supporting pipework, instrumentation and auxiliaries also supplied by ERG Hygrade as part of a full turnkey fabrication package.
The build quality from ERG Hygrade was excellent. Everything was delivered on time, exactly to spec, and has worked flawlessly since day one.
— Engineering Manager, Chemical Sector
Hydecat™ Reactor for NaOCl Blowdown Treatment
To address the safe handling of spent Sodium Hypochlorite (NaOCl) blowdown, ERG Hygrade fabricated and installed a Hydecat™ reactor — a proprietary contact unit designed for high-efficiency hypochlorite destruction.
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Designed for >56,000 ppm NaOCl inflow
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Achieved >99.99% destruction efficiency, reducing output to <9 ppm before drainage
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Fabricated for long service life and low maintenance
In Addition,
to fabricating
the scrubbers and Hydecat™
ERG Hygrade also supplied: All pipework (fabricated in-house to match duty materials) Fan assemblies, pumps and dosing systems Instrumentation and flow monitoring Flue stack and exhaust ductwork Full pre-assembly and factory QA prior to delivery This project highlights ERG Hygrade’s core strength: fabricating robust, high-performance plastic process equipment tailored to demanding gas handling and effluent treatment applications — with end-to-end quality control and delivery from our UK facilities. ERG Hygrade — Precision Fabrication for Harsh Chemical Duties
