Description
XiCheng EP is a leading manufacturer of high-efficiency activated carbon air filters specialized in hydrogen sulfide (H₂S) removal and industrial odor control. With over 16 years of experience in environmental protection equipment, our H₂S filters deliver consistent 98.5%+ removal efficiency, meeting OSHA, EPA and EU emission standards.
Hydrogen sulfide is a toxic, corrosive gas with a distinct rotten egg odor, commonly found in sewage treatment plants, biogas facilities, oil refineries and chemical processing plants. Even at low concentrations, it poses serious health risks and causes severe odor nuisance. Our filter uses advanced dual adsorption technology to permanently remove H₂S and other harmful pollutants, ensuring a safe and compliant working environment.
All our filters are fully compatible with our PP ventilation duct systems and anti-corrosion pipe fittings, providing a complete turnkey solution for your industrial air purification needs.
Core Advantages of XiCheng H₂S Removal Filters
1. Industry-Leading Dual Adsorption Technology
- Combines physical adsorption and chemical impregnation for permanent H₂S removal
- Impregnated with potassium hydroxide (KOH) and iron oxide (Fe₂O₃) to enhance chemical bonding
- Sulfur adsorption capacity of 15-30% by weight, 5-10 times higher than unmodified activated carbon
- Prevents desorption and secondary pollution, ensuring long-term stable performance
2. Corrosion-Resistant Construction
- Filter body available in 100% virgin PP, FRP or carbon steel with anti-corrosion coating
- Passed 1000-hour salt spray test, designed for 10+ years of service life in harsh environments
- Waterproof and moisture-proof design, suitable for high-humidity industrial applications
- Fully compatible with PP wet scrubbers for comprehensive waste gas treatment
3. Low Operating & Maintenance Costs
- Passive adsorption operation requires no additional power supply, reducing energy costs by 100% compared to electric scrubbers
- Modular design allows activated carbon replacement in 30 minutes or less with no specialized tools
- Pre-filter removes dust and particulates, extending carbon service life by 30%
- No chemical additives required, minimizing ongoing operational expenses
4. Compliance & Safety Guaranteed
- Meets OSHA 8-hour PEL (10 ppm) and EU emission standards
- Certified with CE, ISO 9001 and ISO 14001
- Full test reports and compliance documentation provided for regulatory inspections
- Pressure gauge included to alert users when carbon is saturated and needs replacement
5. Comprehensive Customization Capabilities
- Custom airflow capacities from 500 to 50,000 m³/h
- Designed for H₂S concentrations from 50 to 5,000 ppm
- Multiple material options to match your specific application requirements
- Custom dimensions to fit your available installation space
Advanced Dual Adsorption Working Principle
Unlike generic activated carbon filters that only provide temporary physical adsorption, our H₂S removal filter uses a 4-step dual adsorption process to ensure complete and permanent pollutant removal:
- Gas Inlet: H₂S-containing exhaust gas enters the filter through a corrosion-resistant PP inlet, matched with our standard PP ventilation pipes for stable gas delivery.
- Pre-Filtration: A high-efficiency mesh pre-filter removes dust and particulates (≥5μm) to prevent clogging of the activated carbon bed.
- Dual Adsorption:
- Physical Adsorption: H₂S molecules are trapped in the porous structure of high-quality granular activated carbon (coconut shell or coal-based) with a specific surface area of 800-1500 m²/g.
- Chemical Adsorption: H₂S reacts with KOH and Fe₂O₃ impregnants to form stable, non-toxic sulfide compounds that cannot be desorbed.
- Purified Outlet: Clean air with H₂S concentration ≤0.1 ppm exits through the outlet, meeting all international emission standards.
Factory-Tested Technical Specifications
All parameters are verified by third-party laboratories and undergo rigorous factory testing before shipment:
表格
| Parameter | Standard Specification | Factory Test Result | Customization Available |
|---|---|---|---|
| H₂S Removal Rate | ≥98% | 98.7% (at 500 ppm inlet) | Up to 99.9% for high-concentration applications |
| Airflow Range | 500-12,000 m³/h | Stable at 10,000 m³/h for 72 hours | Up to 50,000 m³/h |
| Activated Carbon Type | Impregnated coconut shell/coal-based | Adsorption capacity: 18% by weight | Custom impregnation formulas for specific pollutants |
| Filter Body Material | PP, FRP, Carbon Steel | 1000-hour salt spray test passed | Stainless Steel 304/316 |
| Operating Temperature | -10℃ to 60℃ | Stable performance at 55℃ | Special grades for up to 120℃ |
| Operating Humidity | 30-70% RH | Stable performance at 65% RH | Dehumidifier pre-filter for ≥80% RH |
| Pressure Loss | ≤500 Pa | 420 Pa (at rated airflow) | Low-pressure drop design available |
| Activated Carbon Service Life | 6-12 months | 8 months (average at 200 ppm H₂S) | Extended life options available |
| Inlet/Outlet Diameter | φ110-φ500mm | Standard PP flange connection | Custom sizes and connection types |
| Standard Price | $899.00 (1,000 m³/h PP model) | – | Custom quote based on specifications |
Real-World Case Study: Scandinavian Biogas Plant H₂S Odor Solution
Project Background
A biogas plant in Scandinavia was struggling with severe H₂S emissions from their biogas upgrading process. The plant processes 300,000 tonnes of industrial biological waste annually, producing 8 million m³ of biogas and an offgas stream of 2,000 m³/h containing 2,000 ppm H₂S. This was causing significant odor complaints from nearby communities and risking non-compliance with EU environmental regulations.
Our Solution
After conducting a detailed site assessment and gas composition analysis, our engineering team designed two custom H₂S removal filters:
- Airflow capacity: 2,000 m³/h each
- Filter body material: FRP for maximum corrosion resistance
- Activated carbon: Special high-capacity impregnated carbon optimized for 2,000 ppm H₂S concentrations
- Installation completed in 7 days with zero production downtime
Project Results
- H₂S emissions reduced from 2,000 ppm to 0 ppm at the outlet
- All odor complaints from nearby communities eliminated
- Activated carbon service life of 9 months, exceeding the plant’s 6-month expectation
- 25% reduction in operational costs compared to their previous amine scrubber system
- Full compliance with EU emission standards achieved
This is just one of over 400 successful H₂S removal installations we have completed worldwide. View our project gallery to see more case studies.
Matching System Components
Complete your air purification system with our high-quality compatible products:
- PP Ventilation Ducts and fittings
- Anti-corrosion Centrifugal Fans
- PP Wet Scrubbers for pre-treatment of high-concentration pollutants
- Activated Carbon Adsorption Towers for larger airflow applications
- Motorized Duct Dampers for airflow control
- Replacement Activated Carbon for all filter models
Why Choose XiCheng EP?
With 16 years of specialized experience in manufacturing industrial environmental protection equipment, XiCheng EP has become a trusted partner for clients in over 50 countries worldwide.
- ISO 9001 & ISO 14001 Certified Manufacturing: All products undergo strict quality control at every stage of production
- In-House Engineering Team: Our experienced engineers provide custom design solutions and on-site technical support
- Fast Delivery: Standard models are in stock and can be shipped within 3-5 business days
- Comprehensive Warranty: 12-month warranty on filter body and 6-month warranty on activated carbon
- 24/7 Technical Support: Our team is available around the clock to assist with any technical issues
- Competitive Pricing: Direct factory pricing without middleman markup
For a custom quote or free site assessment, contact our engineering team today. You can also reach us via email at xicheng023@outlook.com or WhatsApp: +86 18927456906.
Frequently Asked Questions (FAQ)
Q: How often should I replace the activated carbon in my H₂S filter?
A: The average service life is 6-12 months, depending on H₂S concentration and airflow. For example, a sewage treatment plant with 50 ppm H₂S will get approximately 12 months of service, while a biogas plant with 2,000 ppm H₂S will need replacement every 6-8 months. Our filters include a pressure gauge to alert you when carbon is saturated.
Q: Can the filter handle high-humidity environments?
A: Yes. We use moisture-proof activated carbon and a waterproof filter body, tested to perform reliably in 30-70% RH environments—ideal for sewage treatment plants and biogas facilities. For extremely high humidity (≥80% RH), we offer a dehumidifier pre-filter as an optional upgrade.
Q: Is the filter energy-efficient?
A: Yes—our filters operate via passive adsorption, requiring no additional power supply. This reduces energy costs by 100% compared to electric scrubbers and aligns with global sustainability goals for industrial odor control systems.
Q: What is the difference between PP, FRP and carbon steel filter bodies?
A:
- PP: Most cost-effective, excellent chemical resistance, ideal for most indoor applications
- FRP: Superior corrosion resistance, suitable for outdoor and highly corrosive environments
- Carbon Steel: Highest mechanical strength, recommended for large-scale industrial installations
Q: Do you provide installation and after-sales support?
A: We offer free installation guidance via video calls and step-by-step manuals. For large-scale projects, our factory technicians can provide on-site installation and training. We also offer 24/7 technical support and a comprehensive warranty on all our products.
Q: Can your filter remove other pollutants besides H₂S?
A: Yes. In addition to H₂S, our activated carbon filters effectively remove other odorous compounds, volatile organic compounds (VOCs), benzene hydrocarbons and dust particles. We can also customize the activated carbon impregnation formula to target specific pollutants in your application.
For more details, explore our official product page: activated carbon air filter for H2S removal. Contact our team via email (xicheng023@outlook.com) or WhatsApp (+86 18927456906) for a free quote and tailored solution.
