Wide Capacity Range
A single unit covers storage duty from medium sites to large municipal projects and works well for peak shaving, buffering, and reserve storage.
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MOTET · GAS STORAGE EQUIPMENT
Floor-Standing Double Membrane Gas Holder
A floor-standing double membrane gas holder for biogas storage, collection, gas supply, and power-support projects.
- Installation
- Ground-mounted on an independent foundation
- Membranes
- Gas-storage inner membrane · form-retaining outer membrane · sealed base
A standalone double-membrane gas storage system
For large biogas plants, wastewater facilities, landfill projects, and industrial anaerobic systems, this format balances capacity, safety margin, and maintenance access.
A ground mounted gas holder (also written ground-mounted) and a floor-standing gas holder describe the same installation arrangement here: an independent membrane holder on a prepared foundation, rather than a cover supported by a digester rim. Confirm the foundation, anchoring and usable volume against the approved design.
Gas-holder types and selection basics →Independent Site Layout
It does not rely on a digester roof or existing structures, so the layout can better follow site access, maintenance, and plot planning.
Stable Operating Pressure
Outer-membrane form control and blower logic help maintain smooth back-pressure and reduce downstream process fluctuations.
Adaptable to Complex Gas Media
The membrane system and protection package can be adjusted to match hydrogen sulphide level, humidity, and local climate.
Choosing a double membrane gasholder for your biogas project
Double membrane gasholder and double membrane gas holder describe the same low-pressure storage system. Start with the installation arrangement, then agree the usable volume, gas duty and supply interfaces—not just the size of the dome.
Ground-mounted / floor-standing
Independent storage on a prepared foundation. Check available land, drainage, anchoring, gas piping and access for membrane maintenance.
This configurationTank-top / digester-mounted
Storage supported by the tank perimeter. Check rim geometry, structural loads, gas-tight connections and access together with the tank designer.
Review this configurationQuestions to settle before purchasing
Is nominal capacity the same as usable gas volume?
Do not assume they are interchangeable. Agree the usable volume and operating range from the production–consumption profile, membrane geometry and level-measurement arrangement. A project photograph’s capacity label is not a sizing calculation.
What should a comparable quotation include?
List membranes, anchoring and seals, support-air equipment, instrumentation, controls and piping interfaces. Identify who supplies foundations, transport, installation, commissioning and service. Do not assume every item is included in the membrane price.
Does a membrane datasheet certify the complete gas holder?
No. Material values describe the selected membrane under stated source methods. They do not by themselves verify the whole installation’s pressure, site loads, service life or fire classification. Confirm the selected material and project-specific design documents separately.
Key specifications and operating boundaries
| Effective Volume | 300-150,000 m³ |
|---|---|
| Working Pressure | 1,000-5,000 Pa |
| Design Temperature | -40°C to +70°C |
| Installation | Ground-mounted on an independent foundation |
| Structure | Inner gas membrane + outer form membrane + sealed base membrane |
| Service Life | 15-20 years |
This table retains the existing product specifications. Capacity, pressure, membranes and instruments must be confirmed against project duty; capacities in photographs are not a substitute for design selection.
Dual-channel air supply & membrane fabrication
The dual-channel equalization design splits air supply into two relatively independent flow paths. It reduces one-sided bulging, wrinkling, and local stress concentration for more uniform outer-membrane shape control.
- The membrane system balances UV resistance, fatigue performance, and corrosion resistance.
- Automatic hot-wedge welding improves consistency across large membrane panels.
- Anchoring and sealing details are built for long-term cyclic duty.
Three-level safety protection
Level 1 Protection
Mechanical overpressure and under-pressure protection acts first and prevents the membrane from exceeding allowable stress.
Level 2 Protection
Pressure, level, and blower status are monitored together. Abnormal conditions trigger alarms and corrective air-supply control.
Level 3 Protection
Hard interlocks with the flare, genset, and main inlet valve execute shutoff and safe relief when the system trips.
Anchoring & sealing structure
- Clamping Plate
- Hot-dip galvanized steel multi-channel sealing profile
- Anchors
- HDG anchor system with reinforced concrete foundation
Project photographs & equipment galleries
Locations, capacities and equipment types below are drawn from MOTET project records. Select a thumbnail to explore each site, or open a photograph at full size.
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- Krabi, ThailandFloor-standing double membrane gas holder
- 3,000 m³
- Ho Chi Minh City, VietnamFloor-standing double membrane gas holder
- 2,000 m³
- East Java, IndonesiaFloor-standing double membrane gas holderWastewater treatmentMOTET carried out design, membrane fabrication and on-site installation.
- 3,000 m³
- Sabah, MalaysiaFloor-standing double membrane gas holder
- 5,000 m³
- Rayong, ThailandFloor-standing double membrane gas holder
- 3,000 m³
- Hanoi, VietnamFloor-standing double membrane gas holder
- 2,500 m³
- Northeast ChinaGround-mounted coal-gas storage holder
- 1,000 m³
Capacities retain the source records’ m³ notation; normalized volume and usable gas storage are not inferred. The photographs do not imply identical membranes, pressures or controls across projects.
The Northeast China record identifies coal-gas storage, not biogas duty. Industrial coal-gas applications require a separate review of composition and safety requirements.
Floor-standing gas holder: enclosure and foundationExplore the equipment galleryMembrane workshop: cutting, positioning and joiningExplore the equipment gallery
Browse existing cases in this product category →MOTET MATERIAL DATA
Membrane materials & performance evidence
The inner membrane retains gas; the outer membrane provides weather protection and is held in shape by support air. These material options support project-specific selection, not a universal specification for every holder.
Options are references, not a performance ranking. Permeability values under different temperatures or test conditions are not directly comparable.
Inner membrane · gas retention
Inner membrane option A
- Mass per unit area
- 1200 g/m² ±5%
- Tensile strength (warp / weft)
- ≥5800 / ≥5400 N/5 cm
- Methane permeability
- <500 cm³/(m²·d·bar); temperature not stated
Source date:
Inner membrane · gas retention
Inner membrane option B
- Mass per unit area
- 1200 g/m² (-5% / +10%)
- Tensile strength (warp / weft)
- ≥4400 / ≥4200 N/5 cm
- Methane permeability
- <131 cm³/(m²·d·bar), 23 °C
Source date:
Inner membrane · gas retention
Inner membrane option C
- Mass per unit area
- Approx. 1500 g/m²
- Tensile strength (warp / weft)
- 8000 / 7500 N/5 cm
- Methane permeability
- ≤200 cm³/(m²·d·bar); temperature not stated
Source date:
Outer membrane · weather protection
Outer membrane option
- Surface finish
- Weldable PVDF front; acrylic back
- Mass per unit area
- 1400 g/m²
- Tensile strength (warp / weft)
- 8000 / 7500 N/5 cm
Source date:
Compiled from membrane technical data for project-specific material selection.
These are material data, not MOTET test reports, whole-holder certification or contractual guarantees. Material permeability is not whole-holder leakage. Selection also requires gas composition, temperature, loads, interfaces and fabrication conditions; approved project and batch documents govern.
What to confirm before requesting a quote
- Confirm foundation geometry, anchoring, drainage and the available footprint.
- Supply gas production and consumption profiles, usable-volume requirements and pressure limits.
- Define gas piping, support-air equipment, power supply and commissioning responsibilities.
What determines a double membrane gas holder price?
Compare quotations on the same usable volume, pressure and gas duty. Membrane specification, site loads, support-air equipment, instruments, controls, transport, installation and after-sales scope affect the package price. A nominal-volume price alone is not a like-for-like comparison; request an itemized project quotation.
Send your project duty and selection requirements →Gas holder membrane replacement and after-sales planning
For an existing holder, provide drawings, operating conditions and inspection photographs before deciding on repair or replacement. Retaining an outer membrane requires its condition and compatibility to be assessed; the sealing interfaces, lifting plan, controls and acceptance tests must also be defined. The records below explain the work, not a guarantee that every existing holder is suitable.
- Outer membrane replacement: preparation, sealing and fastening →
- Inner membrane replacement, part 1: inspection and dismantling →
- Inner membrane replacement, part 2: installation and leak acceptance →
Installation guidance, commissioning, training, spares, site support and warranty terms follow the agreed contract.