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ANAEROBIC DIGESTION & GAS STORAGE

Flexible Biogas Storage Bags & Digester Bags

Flexible PVC products for biogas storage and anaerobic digestion projects. Choose a storage bag for collected biogas or a digester bag for organic-waste digestion, with capacity, connections and configuration reviewed for each project.

2 Product Types · Project-Specific Capacity · Configurable Connections · PVC Construction
Flexible PVC biogas storage bags ready for dispatch

Primary Product Division

Two Flexible Products for Different Biogas Functions

One is designed for the digestion process. The other is designed for collecting and storing the resulting biogas.

PRODUCT 01 · DIGESTER BAG

Biogas Digester Bag

Produce Biogas from Organic Waste

A flexible anaerobic digestion bag designed for organic-waste treatment and biogas production. The bag configuration is reviewed according to digestion volume, feedstock handling, inlet and outlet requirements and installation conditions.

Typical Applications

  • Livestock manure
  • Agricultural organic waste
  • Farm biogas systems
  • Anaerobic digestion projects
  • Project-based biogas setups

Configuration Focus

  • Digestion volume
  • Bag dimensions
  • Feed inlet
  • Digestate outlet
  • Gas outlet
  • Site layout
PRODUCT 02 · STORAGE BAG

Biogas Storage Bag

Collect & Store Produced Biogas

A cylindrical flexible gas holder for collecting and temporarily storing biogas after generation. Capacity, fittings and connection layout are configured according to the gas-handling system and project requirements.

Typical Applications

  • Biogas collection
  • Gas buffer storage
  • Farm biogas systems
  • Renewable-energy projects
  • Low-pressure gas handling

Configuration Focus

  • Storage volume
  • Gas composition
  • Connection sizes
  • Inlet / outlet layout
  • Expected pressure
  • Installation conditions

Process Architecture

From Organic Waste to Biogas Storage

Biogas generation and storage operate in sequence. FUUSHAN supplies flexible products for each stage of the system.

01
Organic Waste

Manure / agricultural organic waste input

02
Digester Bag

Anaerobic digestion and treatment

03
Biogas

Gas is generated continuously

04
Storage Bag

Collected and buffered under low pressure

05
Gas Use

Dispatched according to the project system

System Flexibility: Depending on the project, FUUSHAN can supply the digester bag, storage bag, or both product groups.

Side-by-Side Comparison

Biogas Digester Bag vs. Biogas Storage Bag

Feature
Biogas Digester Bag
Biogas Storage Bag
Main Function
Produce biogas
Collect and store biogas
Process Stage
Digestion
Gas storage
Input
Organic feedstock
Produced biogas
Typical Form
Rectangular / bag-style digester
Cylindrical flexible gas holder
Configuration Focus
Digestion volume, inlet, outlet, site
Gas volume, composition, fittings, pressure
Connections
Feed, digestate and gas connections
Gas inlet / outlet / vent as required
Capacity
Project-specific
Project-specific
Material
PVC configuration
PVC configuration
Project Review
Required
Required

Not sure which product you need?

Tell us whether your project needs to produce biogas, store biogas, or both.

Request a Biogas System Quote →

Product Deep-Dive 01

Flexible Digester Bags for Anaerobic Digestion

Digester bags provide an enclosed flexible volume for the anaerobic treatment of organic feedstock. The required dimensions and connections depend on the intended digestion process, feedstock volume, retention requirements and site conditions.

Flexible digester bag laid out in the FUUSHAN workshop before packing Digester Bag: Continuous anaerobic flow layout

Configuration Can Include:

  • • Digestion capacity (target volume)
  • • Bag length, width and profile
  • • Feed inlet pipe and flange size
  • • Digestate discharge outlet
  • • Gas collection outlet fitting
  • • Site anchoring and trench requirements
Request a Digester Bag Quote →

Product Deep-Dive 02

Flexible Bags for Biogas Collection & Storage

Biogas storage bags provide flexible gas-holding volume after gas generation. The bag should be configured according to the required storage volume, gas characteristics, expected operating conditions and connection system.

Flexible biogas storage bags ready for dispatch in the warehouse Storage Bag: Cylindrical buffer gas holder

Configuration Can Include:

  • • Required storage volume
  • • Cylindrical bag dimensions
  • • Gas inlet and outlet valves
  • • Overpressure vent arrangement
  • • Valves and connecting pipes
  • • Field repair kit and maintenance fittings
Request a Storage Bag Quote →

PRODUCT REFERENCES

Biogas Products We’ve Made

Examples of flexible biogas products previously manufactured by FUUSHAN for gas storage and anaerobic digestion projects.

Cylindrical PVC biogas storage bag used as a low-pressure gas holder

Cylindrical Biogas Storage Bag

Low-Pressure Gas Holder · PVC

Biogas digester bag, 1 m diameter and 1.8 m long

Biogas Digester Bag

Ø1 m × L1.8 m

Custom biogas storage bag, 2 m diameter and 2 m long

Custom Biogas Storage Bag

Ø2 m × L2 m

Looking for a custom biogas storage or digester bag?

Request a Quote →

Quotation Checklist

What We Need to Configure Your Biogas Product

The final configuration is confirmed against the actual project rather than selected only from a generic size chart.

01

Product Type

Specify whether you need a storage bag, digester bag, or both products.

02

Required Capacity

Tell us the required storage or digestion volume (m³ or liters).

03

Gas Information

Share the gas source, expected composition and moisture levels where applicable.

04

Connections

Required inlet, outlet, vent, valve and connection pipe sizes.

05

Operating Conditions

Expected system pressure, operating temperature and outdoor UV exposure.

06

Installation

Site ground conditions, available footprint, indoor or outdoor placement.

Material Science & Integrity

PVC Material Reviewed for the Application

Construction

Standard Construction

PVC is the standard material for these product groups. A typical 0.9 mm configuration is currently used for relevant products, subject to the confirmed project specification.

Evaluation

Gas & Environment Review

Material suitability is reviewed according to gas composition, moisture, installation environment and expected operating conditions.

Specifications

Optional Requirements

Requirements related to outdoor exposure, flame retardancy or other treatments should be stated during enquiry. Availability and documentation are confirmed for the final specification.

Compliance

Pressure Requirements

Operating and test-pressure requirements must be reviewed separately for each project. Do not assume a standard pressure rating from the product category alone.

Fittings & Components

Connections & Accessories

Inlet & Outlet Connections

Configured according to the selected product and process layout.

Valves & Pipes

Connection components can be reviewed according to the gas-handling system.

Vent Arrangement

Vent configuration is confirmed where required by the project safety design.

Repair Kit

Repair materials can be supplied for minor field repair requirements.

Project Scope

Biogas Applications

Product: Digester Bag

Livestock Manure Treatment

Organic-waste digestion for livestock and farm projects.

Product: Digester + Storage

Farm Biogas Systems

Flexible components for small and project-based farm biogas systems.

Product: Storage Bag

Biogas Collection & Buffer Storage

Flexible storage volume for collected biogas before combustion or upgrade.

Product: Project-Specific

Renewable Energy Projects

Storage or digestion products configured as part of a wider biogas system.

Production Flow

From Material to Finished Biogas Bag

01

Material Preparation

PVC material prepared according to the confirmed specification.

02

Cutting & Welding

Panels are cut and welded according to the required dimensions and product structure.

03

Fitting Installation

Inlets, outlets and other confirmed connections are installed.

04

Inspection & Packing

The finished product is checked against the order specification before folding and export packing.

Manufacturer Capabilities

Why Work with FUUSHAN

Two Product Groups

Storage bags and digester bags for different stages of a biogas system.

Project-Based Configuration

Capacity, dimensions and connections are reviewed around the actual process.

In-House Fabrication

Material cutting, welding and fitting installation are managed through our manufacturing process.

B2B Export Support

Products are prepared and packed according to confirmed project and shipment requirements.

Interactive Consultation

Tell Us Where You Are in the Biogas Process

Select your operational need below to start the configuration review:

○ I need to PRODUCE biogas → Digester Bag Configuration
○ I need to STORE biogas → Storage Bag Configuration
○ I need BOTH → Digester + Storage Full System
Please Also Provide: Required volume · Feedstock or gas source · Gas composition if known · Connection requirements · Quantity · Installation country · Outdoor / indoor conditions · Pressure requirement
Request a Quote →

Delivered Project Records

Flexible Storage & Containment in Real Projects

Irrigation Buffer Storage

Australia · 2024

Irrigation Buffer Storage

A 100,000 L pillow bladder tank replacing a leaking steel tank, with UV-stabilized material configured for outdoor use where ambient heat can reach approximately 45 °C.

View project

KEEP READING

Related Applications and Guides

GUIDE

How to Choose a Flexible Tank Manufacturer

Check materials, welding, inspection and custom capability before you commit to a supplier.

Read more →

FAQ

Frequently Asked Questions

What is the difference between a biogas storage bag and a digester bag?

A digester bag is used during the anaerobic digestion process to produce biogas from organic feedstock. A storage bag is used after gas generation to collect and hold the produced biogas.

Can FUUSHAN supply both products for one project?

Yes. Depending on the project requirements, storage bags, digester bags or both product groups can be reviewed.

What material is used?

PVC is the standard material for these product groups. Final material configuration should be confirmed according to gas conditions, environment and project requirements.

What capacities are available?

Capacity is configured according to the project. Provide the required volume and application for review.

What information is required for a storage bag?

Required storage volume, gas source and composition, moisture, expected pressure, connections, installation conditions and quantity are useful for configuration review.

What information is required for a digester bag?

Provide the required digestion volume, feedstock type, inlet and outlet requirements, installation area and quantity.

Can the connection layout be customized?

Inlet, outlet, vent, valve and pipe arrangements can be reviewed according to the confirmed product and process requirements.

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REQUEST FOR QUOTATION (RFQ)

Request a Biogas Storage or Digester Bag Quote

Provide your required gas storage capacity (m³), application (storage or anaerobic digestion), operating pressure, inlet/outlet valve sizes and destination. Our engineering team reviews the required sizing and provides a formal quotation within 24 hours.

Not sure which product you need? Tell us how the gas is produced and where it needs to be stored.

Biogas StorageB2B Manufacturing
Request Quote