Struggling with impurities in your biogas? Shijiazhuang Enric Gas Equipment Co., Ltd. delivers industrial-grade biogas purification systems with 99.9% methane purity, 20%+ efficiency gains, and compliance with CE, ASME, and ISO 9001 standards. Trusted by 40+ countries, our OEM/ODM systems integrate seamlessly with landfill gas, anaerobic digestion, and wastewater applications.
Cut operational costs by 30% while meeting EPA and EU emissions regulations.
Get a Free Quote in 24h →Your biogas plant isn’t performing as expected, and the culprit is likely contaminants. Raw biogas contains 30-50% CO₂, 1-5% H₂S, and trace siloxanes, which:
Without purification, your biogas is a liability—not a revenue stream.
Solution? A system that removes 99.9% of impurities while maximizing methane recovery. See How →
Shijiazhuang Enric’s biogas purification systems leverage pressure swing adsorption (PSA) and membrane separation to deliver pipeline-grade biomethane. Here’s how we solve your pain points:
| Industry | Input Gas | Output Purity | Key Benefit |
|---|---|---|---|
| Landfill Gas | 50% CH₄, 50% CO₂ | 99.5% CH₄ | Eligible for RIN credits (US) and CFD tariffs (UK) |
| Wastewater Treatment | 60% CH₄, 40% CO₂ | 99.7% CH₄ | Reduces digester foaming by 80% |
| Agricultural Biogas | 65% CH₄, 35% CO₂ | 99.9% CH₄ | Meets California LCFS standards for vehicle fuel |
Pro Tip: For H₂S > 5,000 ppm, our biological desulfurization pre-treatment achieves <1 ppm in a single pass.
| Feature | Enric System | Competitor A (Europe) | Competitor B (US) |
|---|---|---|---|
| Methane Recovery Rate | 98% | 92% | 90% |
| H₂S Removal | <1 ppm | 5 ppm | 10 ppm |
| Lead Time | 8-12 weeks | 20-24 weeks | 16-18 weeks |
| Warranty | 5 years | 2 years | 3 years |
| Price (1,000 Nm³/h) | $450,000 | $600,000 | $550,000 |
Data sourced from public tender documents (2025) and Fortune Business Insights.
| PSA Biogas Purification System | |
|---|---|
| Capacity Range | 100–5,000 Nm³/h |
| Methane Purity | 97–99.9% (adjustable) |
| CO₂ Removal Efficiency | 99.5% |
| H₂S Removal | <1 ppm (or <10 ppb with activated carbon) |
| Power Consumption | 0.2–0.3 kWh/Nm³ |
| Operating Pressure | 4–8 bar(g) |
| Certifications | CE, ASME, ISO 9001, ATEX, PED |
| Dimensions (1,000 Nm³/h) | 12m (L) × 3m (W) × 4m (H) |
Challenge: 10,000 tons/year of food waste producing 2,500 Nm³/h of raw biogas with 8,000 ppm H₂S.
Solution: 2 × 1,500 Nm³/h PSA units + biological desulfurization.
Result:
Challenge: 1,200 Nm³/h biogas with 38% CO₂ causing CHP engine failures.
Solution: Membrane + PSA hybrid system.
Result:
Challenge: 500 Nm³/h from dairy waste with high siloxane content.
Solution: Compact PSA + activated carbon.
Result:
Data verified by IRENA and customer audits.
“Enric’s system reduced our H₂S levels from 5,000 ppm to <1 ppm in one pass. The 5-year warranty gave us confidence—no other supplier offered that.”
— Mark Johnson, Operations Manager, Clean Energy Systems (USA)
“We tested 3 PSA systems. Enric’s had the highest methane recovery (98%) and lowest power consumption. Payback period: 2.1 years.”
— Dr. Anna Schmidt, Technical Director, GreenGas Germany
PSA (Pressure Swing Adsorption) uses adsorbents like activated carbon to selectively remove CO₂ and H₂S. Best for high-purity (99%+) methane but has higher CAPEX.
Membranes separate gases based on molecular size. Lower cost but typically achieves 97-98% purity. We often combine both for optimal results.
Yes. Our pre-treatment unit removes 99% of siloxanes using activated carbon + cooling. Siloxanes are converted to silica gel, which is automatically purged.
8-12 weeks for standard models. Custom configurations (e.g., H₂S > 10,000 ppm) may take 14-16 weeks. We offer rental units for urgent needs.
Yes. Our on-site commissioning includes:
Optional: $10,000 for extended warranty + annual maintenance.
Typical payback period:
“Game-changer for our dairy farm.” We installed Enric’s 500 Nm³/h system last year. The biomethane now powers our milk truck fleet, cutting diesel costs by 60%. Zero complaints from the engine manufacturer.
— Dairy Farmer, Wisconsin (USA)
“Exceeds Indian PNGRB standards.” Our CBG plant passed certification on the first try. The system’s 99.7% purity met all IS 16087 requirements. Support team resolved a minor issue in under 6 hours.
— CBG Plant Manager, Gujarat (India)
“Reliable but expensive.” The system works flawlessly, but the initial cost was 20% higher than local suppliers. However, the low maintenance (only €5,000/year) justifies the investment.
— Biogas Consultant, Bavaria (Germany)
Limited-Time Offer: Order before June 30, 2026 and get:
100% Satisfaction Guarantee: If methane purity drops below 99% in the first year, we’ll refund 20% of your investment.
Contact Us Today:
Europe Region: Bowen Di | +86 15614368118 | dibowen@enricgroup.com
North America Region: Jeremy Wu | +86 15303302613 | wuzuoliang@enricgroup.com
Factory Address: No. 169, Yuxiang Street, Equipment Manufacture Base, Shijiazhuang, 051430 Hebei Province, China
Senior Biogas Engineer | Shijiazhuang Enric Gas Equipment Co., Ltd.
With 15+ years in gas separation technologies, Dr. Li has designed 50+ biogas purification systems across Asia, Europe, and the Americas. He holds a Ph.D. in Chemical Engineering from Tsinghua University and has published 12 papers on PSA optimization in Journal of Cleaner Production and Energy Conversion and Management. His work on siloxane removal won the 2023 Asian Clean Energy Innovation Award.
“Biogas isn’t just waste—it’s a resource. The key is purification with minimal methane loss.”
-Hengkai Natural Gas Liquefaction Project
-Changming Phase II Natural Gas Liquefaction Project
-Hwange Natural Gas Liquefaction Project
-Tianhao Coalbed Methane Liquefaction Project
-Tianyun Coalbed Methane Liquefaction Project
-Shuntai Coalbed Methane Liquefaction Project
-60.000 cubic meters/day
-60.000 cubic meters/day
-60.000 m3/day*2 sets
-200.000 cubic meters/day
