ECOMEMBRANE is a global leader in the design and manufacture of innovative biogas storage systems utilizing proprietary PVC membranes.

With an outstanding track record spanning over 20 years, they help customers around the globe to implement clean energy and emission reduction solutions, reducing costs and maximizing financial and environmental benefits.

With more than 400 holders and covers installed around the world, ECOMEMBRANE has built a reputation for delivering superior performance based on leading technology and know how. Their portfolio of products and solutions includes gasholders and covers, floating covers, odor control covers and biogas plant accessories.

Products

2Master

Our two membrane constant pressure gasholders serve as a standalone containment system designed to store biogas generated from the anaerobic digestion of municipal waste water treatment, agriculture waste, industrial and urban waste. These gasholders are mounted on a concrete slab.

The 2MASTER system’s external, gas and bottom membranes are constructed using double-sided PVC-coated fiber fabric (UV-microbial-abrasion-biogas resistant). Individual membrane sections are welded together using high frequency welding (ISO 9001 quality). All welding edges are sealed using an Eco-Safe layer of pure PVC in order to prevent biogas and other contaminants from degrading the fibers within the membrane. The inner biogas chamber is a completely sealed, one-piece chamber which prevents gas losses that can pass through anchor bolts used to secure the gasholder to the concrete base.

The air, or external, membrane functions as the outer shell of the 2MASTER system and supports the environmental loads that the gasholder will experience throughout its life. In addition, through the use of a continuously operating air handling system, the proper level of pressure is maintained allowing the biogas chamber to operate at a preset and constant working pressure.

The biogas chamber’s storage capacity varies according to the production and use of biogas while operated at a constant working pressure regulated by the air membrane and air handling system.

From an operational safety standpoint, a gradual and continual replenishing of the air chamber by the air handling system removes any biogas that might pass from the biogas chamber into the air chamber.

Our 2MASTER system incorporates several key features, including large storage volumes and gas flow rates, shape variability to maximize storage capacity, and economical biogas storage.

Large Storage Volumes and Gas Flow Rates. The 2MASTER system is recommended for applications where gas storage volume is greater than 3,000 m3 or 106,000 ft3. This system is also recommended for applications when high and variable gas flow rates are expected.

Shape Variability to Maximize Storage Capacity. For applications requiring up to 2,000 m³, or 70,600 ft3, the 2MASTER system is available either as a ½ sphere or ¾ sphere. Larger sizes and locations where high winds are expected require a ½ sphere 2MASTER system.

Economical Biogas Storage. Dual membrane construction and a simple air pressurization / handling system make the 2MASTER an economical choice for biogas storage.

3Master


Our three membrane constant pressure gasholders serve as a standalone containment system designed to store biogas generated from the anaerobic digestion of municipal waste water treatment, agriculture waste, industrial and urban waste. These gasholders are mounted on a concrete slab.

Similar to our 2MASTER system, the 3MASTER system’s external, gas and bottom membranes are constructed using double-sided PVC-coated fiber fabric (UV-microbial-abrasion-biogas resistant), while the intermediate membrane is constructed using a single-sided PVC-coated fiber fabric (UV-microbial-abrasion-biogas resistant). Individual membrane sections are welded together using high frequency welding (ISO 9001 quality). All welding edges are sealed using an Eco-Safe layer of pure PVC in order to prevent biogas and other contaminants from degrading the fibers within the membrane. The inner biogas chamber is a completely sealed, one-piece chamber which prevents gas losses that can pass through anchor bolts used to affix the gasholder to the concrete base.

Our 3MASTER system offers several advantages to our 2MASTER system, including a greater level of operational safety, more accurate pressure control and power savings.

Greater Level of Operational Safety. The 3MASTER system incorporates two completely separate chambers for the air and the biogas, thus preventing the possibility of gas leakage into the controlled air volume. Rather, any gas that might leak from the biogas chamber flows naturally through the free space between the biogas chamber and the intermediate membrane, avoiding a potentially dangerous mix of biogas and air stored in the air chamber. In the event of a power failure, the 3MASTER system uses the air valves to lock in the biogas, maintaining the structural integrity of the gas holder long enough for a temporary generator to connected, power to be restored, and if necessary, biogas to be flared.

Accurate Pressure Control. The 3MASTER system allows pressure to be maintained while biogas is filling the gasholder, and only requires blower operation when biogas is being used. The working pressure of the 3MASTER is controlled mechanically using adjustable air relief valves mounted on the side of the air membrane.

Power Savings. With the 3MASTER system, the use of an air blower is only required during the initial filling of the membrane, for compensation and for maintenance of a constant pressure when biogas is being drawn out. This provides power savings compared to the 2MASTER system, which requires a continuously operating blower.

Level Control System. A patented electro-mechanical system accurately records the level of the internal biogas membrane’s apex, so that operators can accurately gauge the volume of biogas stored in the gasholder. This avoids the usual difficulties encountered with ultrasonic level detection such as false volume readings due to target misalignment.

Clarifier Covers


Ecomembrane’s clarifier covers are innovative and unique solutions to cover primary and secondary clarifier tanks in order to capture and contain odor emissions.

There are two designs in order to meet different clarifier designs and customer needs:

    • CLARICOVER® – clarifiers with rotating bridges
    • CLARIFIX® – clarifiers with non-rotating bridges

Ecomembrane’s clarifier covers provide several key advantages:

    • Effective odour control and heat retention
    • Lower cost
    • Available sizing
    • Installation time and expense
    • Reduced capital investment in air treatment system
    • Full perimeter access (CLARICOVER®)
    • Longevity

Cupola M1 Cone


The CUPOLA M1 CONE are suited to cover pre-tanks and post digestion tanks. They can be designed to cover the tank for odor containment and rainfall protection or even to be gas tight and to serve as gas storage. The conic shaped cover is supported by a central mast that ensures the required wind and snow resistance.

Cupola M2

Our two membrane gasholder domes are primarily used in industrial and agriculture applications and install quickly and easily on a newly constructed or pre-existing digester tank. The CUPOLA M2 can be designed in a variety shapes and using different membrane options depending on the particular application and required operating pressures.

When used in industrial applications where the operating pressures are typically greater, the CUPOLA M2 is constructed using special membranes and individual membrane sections are welded together using high frequency welding (ISO 9001 quality). All welding edges are sealed using an Eco-Safe layer of pure PVC in order to prevent biogas and other contaminants from degrading the fibers within the membrane.

In the case of agricultural applications where the operating pressures are generally lower, our proven two membrane system incorporates air and gas membranes stabilized by a continuously operating air handling system.

In order to help ensure the long lasting life for the CUPOLA M2, a net support system is available. The net support system is designed to support the gas membrane during operation and installation.

It is needed to ensure the gas membrane does not come into contact with the mixers, or any abrasive solids in the slurry.

Cupola M3

Our three membrane constant pressure gasholder domes are installed on newly constructed or pre-existing digester tank and designed to recover and collect biogas directly from the tanks. The CUPOLA M3 is an ideal choice for replacing an existing steel gasholder dome and offers an opportunity for storage volumes to either be maintained or increased, while reducing replacement and maintenance costs. Installation is quick and takes approximately one week to complete.

The CUPOLA M3 is constructed using PVC-coated fiber fabrics (UV-microbial-abrasion-biogas resistant) and welded together using high frequency welding (ISO 9001 quality). All welding edges are sealed using an Eco-Safe layer of pure PVC in order to prevent biogas and other contaminants from degrading the fibers within the membrane.

Greater Level of Operational Safety. The CUPOLA M3 system incorporates two completely separate chambers for the air and the biogas, thus preventing the possibility of gas leakage into the controlled air volume. Rather, any gas that might leak from the biogas chamber flows naturally through the free space between the biogas chamber and the intermediate membrane, avoiding a potentially dangerous mix of biogas and air stored in the air chamber. In the event of a power failure, the CUPOLA M3 system uses the air valves to lock in the biogas, maintaining the structural integrity of the gas holder long enough for a temporary generator to connected, power to be restored, and if necessary, biogas to be flared.

Accurate Pressure Control. The CUPOLA M3 system allows pressure to be maintained while biogas is filling the gasholder, and only requires blower operation when biogas is being used. The working pressure of the CUPOLA M3 is controlled mechanically using adjustable air relief valves mounted on the side of the air membrane.

Power Savings. With the CUPOLA M3 system, the use of an air blower is only required during the initial filling of the membrane, for compensation and for maintenance of a constant pressure when biogas is being drawn out. This provides power savings compared to the CUPOLA M2 system, which requires a continuously operating blower.

Level Control System. A patented electro-mechanical system accurately records the level of the internal biogas membrane’s apex, so that operators can accurately gauge the volume of biogas stored in the gasholder. This avoids the usual difficulties encountered with ultrasonic level detection such as false volume readings due to target misalignment.

ECOntainer


ECOntainer is a containerized gasholder fully assembled and tested in our company, easy to transport and to install on site without any extra testing. It is made of and internal membrane made with PVC coated polyester fabric that work as gas storage chamber, while the external pressure air chamber is formed by the sealed steel container that comes certified for sea shipping. The gasholder comes with inlet and outlet gas connection fittings and with specific accessories for the pressurization, the gas volume level sensor and the air and gas safety valves.

Main features

    • The gasholder can be placed on simple even surfaces without need of concrete platform.
    • It is gas tight and can safely work in any wind or atmospheric extreme condition.
    • It can support fast working filling cycles. Very easy to move and to transport.
    • Easy to serial production with standard sizes. It can be piled up with more units connected
      with each other in series or in parallel without occupying any extra ground surface.

Lagoon Cover


The covers are tailor-made on existing or new lagoons to minimize gaseous pollutant emissions and to avoid evaporation and diffusion into the atmosphere caused by the wind.

The cover is assembled by union of parallel stripes of material with continuous high frequency welded joints. The central area of the cover floats on the liquid surface following its course. The lateral zones can be hooked to the perimeter with special connections.

Main features

    • Adaptable to docks of any size.
    • They can be equipped with a walkable surface.
    • They can be equipped with a system for rainwater recovery.