DecomClear® H₂S Rapid Clear Z
A zinc chloride–based hydrogen sulfide scavenger specifically formulated for dredging operations and sludge handling where rapid H₂S release occurs as material surfaces.
Product Overview
DecomClear® H₂S Rapid Clear Z is a zinc chloride–based hydrogen sulfide scavenger specifically formulated for dredging operations and sludge handling where rapid H₂S release occurs as material surfaces. It combines the proven strength of zinc chloride precipitation with fast-reacting amines and stabilisers to deliver immediate knockdown of H₂S emissions and extended suppression during hopper storage.
Applications
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Dredging and remediation of H2S generating sludges.
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Hopper and bucket operations where sludge surfaces release H₂S
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Odor and hazard reduction during sludge transfer and dewatering
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Industrial and municipal sludge handling where zinc-based scavenging is acceptable
Product Features
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Rapid Knockdown: Dual-action zinc + amine system captures H₂S instantly at surface break.
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Extended Suppression: Sodium gluconate stabiliser reduces re-release of H₂S during hopper residence.
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Enhanced Wetting: Non-ionic surfactant ensures uniform coverage of sludge surfaces.
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High Reactivity: Designed for spray-bar and atomising nozzle applications.
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Proven Chemistry: Based on zinc chloride precipitation, a robust and reliable H₂S control method.
Physical Properties
Appearance: Clear to slightly hazy liquid
Odour: Mild, slightly amine-like
Specific Gravity: ~1.45 – 1.50
pH (at 25°C): 3.0 – 4.0
Solubility: Fully water soluble
Recommended Application
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Spray curtain above hopper entry to intercept sludge as buckets dump.
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Continuous surface misting over hopper sludge to prevent secondary emissions.
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Dosing rate: 1.5–2.0 L per m³ of sludge, adjusted per H₂S monitor readings.
Typical Dosage Performance
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Instant H₂S reduction: >90% reduction within seconds of sludge contact.
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Sustained suppression: Maintains low H₂S levels in hopper for up to 4–6 hours, depending on sludge composition.
Storage and Handling
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Store in HDPE, FRP, or lined mild steel tanks.
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Avoid contact with unlined carbon steel or reactive metals.
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PPE required: gloves, goggles, protective clothing.
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Protect from frost and direct sunlight.
Safety
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Corrosive liquid — zinc chloride is hazardous.
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Ensure ventilation when spraying in confined areas.
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Refer to SDS for detailed handling and first aid guidance.