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Hydrogen Sulfide (H₂S) Scrubber System Manufacturer in India
H₂S Scrubbers for Odour Control and Toxic Gas Removal
High Removal Efficiency | Wet & Dry Options | Corrosion-Resistant
Envigaurd manufactures H₂S scrubber systems that remove hydrogen sulfide from biogas, wastewater, chemical and process exhaust streams. We offer wet and dry scrubbing configurations, each sized to your gas flow and H₂S concentration.
✅ Wet (caustic) and dry media H₂S scrubbing systems
✅ For STPs, ETPs, biogas, chemical and refinery applications
✅ Turnkey support: Design → Manufacturing → Installation → AMC
Our Credentials: Excellence, Experience, and Reliability
of Industry Experience
Projects Completed
Ongoing Projects
Experts Professionals
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Satisfied Clients Who Trust Our H₂S Scrubber Systems
We take pride in the trust placed in us by plant operators, utilities and consultants who rely on Envigaurd H₂S scrubbers to control odour and toxic gas emissions.
Every H₂S scrubber is engineered around the gas flow, H₂S load and discharge limits, with the right scrubbing chemistry, packing or media and corrosion-resistant construction.
From design and fabrication to installation, commissioning and after-sales support, each project reflects our commitment to safety, compliance and long-term performance.
About Hydrogen Sulfide (H₂S) Scrubber Systems
Hydrogen sulfide (H₂S) is a colorless, flammable, and highly toxic gas often generated in industries such as oil and gas, wastewater treatment, biogas, chemical manufacturing, and pulp and paper. Known for its rotten egg smell, H₂S is corrosive to equipment, hazardous to human health, and subject to strict environmental regulation. We provide custom-engineered Hydrogen Sulfide Scrubber Systems designed to safely and efficiently remove H₂S from exhaust and process gas streams. Our systems ensure environmental compliance, workplace safety, and long-term operational efficiency.
Key Features of Our H₂S Scrubber Systems
Our Hydrogen Sulfide (H₂S) scrubber systems are designed with decades of hands-on engineering expertise, industrial process understanding, and air quality compliance knowledge. Built on real-world application data and in-house R&D, each system is customized to meet your facility’s gas load, flow rate, safety protocols, and space constraints.
High Removal Efficiency
Achieves up to 99.9% H₂S removal, ensuring safe, odor-free air discharge and protection for workers and equipment.
Tailor-Made for Your Operations
Each system is custom-engineered to fit your exact process conditions—gas concentration, flow volume, temperature, and layout.
Wet and Dry Scrubbing Technologies
Available in wet scrubber (chemical absorption) or dry scrubber (adsorption media) configurations to match your process and maintenance preferences.
Corrosion-Resistant Materials
Constructed using FRP, PP-FRP, SS316, or PVDF, providing long-term resistance in aggressive chemical environments.
Compact and Modular Design
Space-saving systems suitable for rooftop, vertical, or ground-level installation; easy to expand or relocate.
Fully Compliant with Emission Norms
Built to meet or exceed CPCB, OSHA, and EPA standards for H₂S emissions and worker exposure limits.
Energy-Efficient Operation
Equipped with VFD-controlled blowers, optimized internals, and low-resistance packing media to minimize energy consumption.
Automation and Remote Monitoring
Optional PLC/SCADA integration, IoT dashboards, and pH/ORP sensors for real-time monitoring, control, and predictive maintenance.
How the H₂S Scrubber System Works
The removal of hydrogen sulfide can be achieved using two core scrubbing technologies: wet scrubbing and dry scrubbing. We offer both solutions based on client needs, operating environment, and discharge limits.
Wet Scrubber
In a wet scrubber, the contaminated air stream passes through a packed bed reactor where it comes into contact with an alkaline scrubbing solution, typically sodium hydroxide (NaOH). The H₂S reacts chemically with the alkaline liquid to form non-toxic sulfates or thiosulfates. The treated air is then passed through a demister before being released into the atmosphere.
Components:
- FRP scrubber tower with structured packing
- Recirculation tank and pump
- Chemical dosing system with pH control
- Blower with VFD (Variable Frequency Drive)
- Demister section
Dry Scrubber
A dry H₂S scrubber uses media beds packed with activated carbon or impregnated mineral media that physically adsorb and chemically neutralize H₂S molecules as air passes through. This system is preferred in low humidity or intermittent flow applications where water-based systems are not viable.
Components:
- Carbon steel or stainless steel housing
- Media cartridges or packed media beds
- Inlet and outlet ducting
- Optional pre-filters and post-filters
- Pressure differential monitoring system
Industrial Applications
Our H₂S scrubbers are used across various industries:
Wastewater Treatment Plants
H₂S is commonly released during anaerobic digestion, sludge handling, and lift station operations. Our scrubbers control odor and meet safety norms for enclosed plants and open-air treatment zones.
Oil and Gas Refineries
H₂S is a byproduct of crude oil and natural gas processing. Our systems help maintain emission levels within environmental guidelines while protecting downstream equipment from corrosion.
Biogas and Landfill Gas Treatment
H₂S in biogas can damage engines and reduce methane yield. Scrubbers installed before biogas upgrading systems protect membranes and improve gas quality.
Chemical and Fertilizer Plants
Our H₂S scrubbers help treat exhaust gases from sulphur recovery units, reactors, or venting systems to protect workers and prevent chemical contamination.
Pulp and Paper Mills
In kraft pulping processes, H₂S emissions are a challenge. Our scrubbers eliminate H₂S at source before it enters the stack.
Envigaurd Installation Installation and Support
At Envigaurd, we don’t just manufacture chlorine scrubber systems — we ensure they perform flawlessly from day one. Our experienced team delivers end-to-end turnkey installation and lifetime support to help your plant stay safe, compliant, and operational.
Our Installation Services Include:
-
Site Survey and Engineering Assessment
Detailed evaluation of your plant layout, gas load, emission points, and space constraints. -
Civil, Mechanical, and Electrical Installation
Complete integration including foundations, ducting, cabling, pumps, and instrumentation. -
System Commissioning and Performance Testing
On-site trial run, neutralization efficiency testing, and documentation for regulatory audits. -
Operator Training and Handover
Hands-on training for plant personnel on system operation, safety protocols, and emergency response. -
Annual Maintenance Contracts (AMC)
Scheduled inspections, media replacement, and 24/7 emergency support to ensure long-term system reliability.
Return on Investment
Investing in an H₂S scrubber provides a measurable return:
- Reduces fines or penalties for non-compliance
- Prevents unscheduled maintenance due to corrosion
- Extends life of plant equipment
- Improves community relations by eliminating odor complaints
- Enhances corporate environmental responsibility
Frequently Asked Questions About Hydrogen Sulfide Scrubber
Our scrubber systems are engineered to achieve up to 99.9% H₂S removal efficiency, depending on factors such as inlet gas concentration, flow rate, contact time, and media or reagent used. Performance is validated through gas analysis during commissioning.
Yes. Our systems incorporate Variable Frequency Drive (VFD)-controlled blowers, pressure sensors, and flow meters that allow real-time adjustment to varying gas flow rates without compromising performance or safety.
- Wet Scrubbers: Require periodic pH monitoring, neutralization chemical dosing, and occasional solution replacement.
- Dry Scrubbers: Media typically lasts 6 to 12 months, depending on inlet H₂S concentration, flow rate, and humidity.
- Wet Scrubber: Uses a chemical solution (e.g., caustic) to neutralize H₂S gas via absorption and chemical reaction.
- Dry Scrubber: Utilizes solid adsorbent media (e.g., impregnated activated carbon) to physically adsorb H₂S from the gas stream.
Our scrubbers are widely used in:
- Wastewater treatment plants (STPs & ETPs)
- Biogas plants
- Oil & gas facilities
- Chemical & fertilizer industries
- Pulp & paper mills
- Food processing and rendering plants
Power consumption varies by system size and configuration. Typical components include blowers, pumps, control panels, and dosing systems. Energy efficiency is optimized using low-pressure drop design, VFDs, and demand-based control logic.
Yes. All systems are designed in compliance with CPCB norms (India) for air pollution control and OSHA safety guidelines (USA), ensuring regulatory adherence and operator safety.
Absolutely. We provide PLC-based automation that can be seamlessly integrated into your existing DCS/SCADA systems via Modbus, Ethernet/IP, or analog/digital I/Os.
Yes. Our systems support IoT-enabled remote monitoring, data logging, and real-time alerts via SMS, email, or cloud dashboard for key parameters such as pH, flow, pressure, and media life.
Routine maintenance includes:
- Dry systems: Media level check and pressure drop monitoring
- Wet systems: pH check, liquid level monitoring, pump inspection
- Both: Blower bearing lubrication, gasket inspection, and system flushing (as needed).
Comprehensive servicing is recommended every 6 months.
We require the following data:
- Inlet gas flow rate (CFM or CMH)
- H₂S concentration (ppm or mg/m³)
Available installation footprint
Based on this, we perform design calculations and recommend the appropriate scrubber type, size, and configuration.
Typical installation and commissioning take 2 to 4 weeks after site readiness, depending on system complexity, civil work status, and utility availability.
Yes. We provide comprehensive training covering:
- System startup and shutdown procedures
- Routine checks and maintenance
- Emergency handling
- Troubleshooting and alarm management
Training can be onsite or remote, depending on client preference.
Costs vary based on:
- Airflow rate and gas concentration
- Choice of wet/dry configuration
- Materials of construction (FRP, SS, MSRL, etc.)
- Degree of automation (manual, semi-auto, PLC-based)
Please contact us for a customized quote with technical proposal and datasheet.
Yes. We offer modular and scalable scrubber systems that allow future capacity upgrades or relocation, ideal for expanding facilities or plant relocation scenarios.
Contact Us
Ready To Start Your Industrial Transformation?
Reach out to us now.
- No. 11, Vivekananda Nagar, Machohalli Industrial Area, Magadi Main Road, Bangalore, Karnataka, India-560091
- +91-8147606843
- +91-9986115839
- contact@envigaurd.com
