Ground-Mounted Double Membrane Biogas Holder

System description of ground-mounted double membrane biogas holder

The outer membrane forms the actual protective construction and is always under a for the statics necessary positive pressure. Through a built-in viewing window the operations inside can be observed at any time. The actually usable holder forms the inner membrane. This membrane moves up or downwards depending on the filling level. In the ground-mounted double membrane biogas holder with base plate a bottom membrane seals the storage space to the concrete foundation. With the help of the anchoring ring, the membranes are attached to the foundation. Particular emphasis is on the dimensioning of the membranes. Each holder will be calculated individually in consideration of the loads (internal pressure, wind and snow loads). As a result, membranes with high tensile strength are selected. The PVC-coated membranes are flame retardant according to DIN 4102 B1, fungicide, and equipped with an increased UV protection. To protect the membranes from the substances in the biogas (CH4, CO2, H2S, etc.) the inner- and bottom membranes have a special coating.
To ensure an optimum gas mixture, each gas supply and gas conduction is provided separately. A safety valve against excess pressure is supplied as standard.

The supporting air blower provides the necessary pressure of the gas reservoir to absorb the external forces such as wind and snow load and create the form on the gas system. A separate air tube connects the blower to the reservoir. The check valve prevents air leakage in case of failure of the blower. For safety in the air system a pressure control valve is installed. This valve controls the operating pressure and agrees to a minimum required pressure (static stability, failure of the blower) independently in the outer membrane. This device is stable with existing gas production capacity of storage.

The level measurement enables an optimal utilization of the storage volume and control of the slave units (e.g. flare, engine, burner, etc.) "

Application of ground-mounted double membrane biogas holder
Livestock farm, Brewery wastewater treatment, Beer wastewater treatment plant, the paper mill wastewater treatment, urban sewage treatment, garbage disposal, food waste treatment, , Food wastewater treatment, crops’ waste treatment , food factory sewage treatment, etc.

The ground-mounted double membrane biogas holder: STANDARD SCOPE OF SUPPLY:

The Standard MONDES PROCESS EQUIPMENT package includes:

• Internal membrane, fabricated to dimensions to suit required volume containment, designed to with stand all in-service conditions. Standard colour: Grey.

• External membrane, fabricated to dimensions to suit required volume containment, designed to withstand all in-service conditions. Standard colour: White. (Other colour available at additional cost). The external membrane comes complete with:

• DN300 acrylic viewing port, complete with frame and fixings and reinforced opening in membrane.

• Reinforced openings for air supply hose and air exhaust hose.

• Top plate for ultrasonic level transducer and physical pressure relief valve.

• Internal bottom membrane. Standard colour: Yellow

• All necessary perimeter embedded parts, pressing plate, sealant strips.

• Duty and Standby blowers rated according to the pressure and volume flow requirements of the system. All necessary air hose. Non-return valve for each blower (constructed from stainless steel and aluminium for non-sparking operation).

• Air exhaust hose and balanced regulator valve, rated according to the pressure and volume flow requirements of the system. Regulator valve constructed from stainless steel and aluminium for non-sparking operation.

• Ultrasonic level transducer and instrumentation.

• Pressure sensor and mounting plate

• Internal membrane and external membrane safety water seal.

Gas Categories for storage of ground-mounted double membrane biogas holder
Biogas, coal gas, natural gas, carbon dioxide, and many different kinds of biogas and mineral gas, etc.

Quality service and warranty of ground-mounted double membrane biogas holder

• 100% quality testing for every finished product before delivery;

• Professional Aging testing room for aging testing time over 8 hours

• Professional function testing for every process

• One year warranty service for whole set equipment.

• to repair the outer-membrane and inner-membrane for free within 10 years.

• free replacement for outer membrane and inner membrane within 3 years since customer receives equipment.