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dbds
  • Offer Profile
  • The abbreviation dbds stands for Deutsche Biogas Dach-Systeme GmbH. And for the combination of established experts and (individual) firms that have specialised in the fields of biogas and industrial plant construction for years. Every single permanent partner is a specialist who has set his own standards in service and innovation, thereby contributing to the success and strength of the combination.
Product Portfolio
  • Our Goals

  • Quality, safety, reliability and efficiency: these are the virtues with which we have adopted our customers' objectives. We understand our customers' confidence in the value of dbds as an investment. We work continuously to assure the best possible return on this investment. Day-for-day we continue to develop our services and processes to set new standards in terms of technology, process safety or efficiency – for industrial and agricultural operations as well as for plant builders and developers.

    All our products have proven their market maturity in thorough long-term tests and field trials. The various individual demands of our customers and their respective uses and applications constitute the focus of advice, development and implementation of a dbds solution. Thus all properties and quality specifications of our systems are developed to take account of the processes in which they are to be implemented later. Our guarantee of the greatest possible safety is the result of thinking outside our own box. Therefore we monitor, document and evaluate all of our manufacturing stages and those of our suppliers using comprehensive quality assurance procedures.
      • Technology and products

      • All dbds products – whether standard products or customised solutions – are developed and implemented in line with all applicable laws, guidelines, technical regulations and recommendations. This includes structural analysis of our roofs in accordance with DIN 1055, taking account of the respective snow and wind loads, and their adaptation to all container systems. All of the materials used by dbds are developed and produced specifically for use in biogas plants. The membranes are flame-retardant according to DIN 4102 B1, methane gas permeability is significantly below the limit values, and the industrially produced, all-over high-frequency welded seams are up to 8 cm wide.
          • Double-shell roof systems

          • The dbds double-membrane roof systems are designed for containers
            • up to a diameter of 40 m
            • up to a gas operating pressure of 20 mbar
            • up to a gas storage volume of 6,500 m³
            The roof systems can be fitted to containers made out of concrete, steel or enamelled steel. Depending on the customer's wishes and requirements, the following components on the roof system can be individually adapted, selected and manufactured.
          • Single-shell roof systems

          • The single-shell biogas container roof systems can be delivered in "gas-tight" or "odour-tight" versions. The material used for the single-shell roof system is a PVC-coated polyester fabric, which has been especially developed and produced for use with biogas tanks. The material is very flame-retardant according to DIN 4102 B1 and UV-resistant. Materials with a weight of 800 g/m² to 1,500 g/m² are used. The gas permeability of the membrane is between <200 cm³/(m² d bar) and <500 cm³/(m² d bar). It is available in the standard colours of silver grey (similar to RAL 7001) and moose green (similar to RAL 6005). However, the membranes can also be delivered in special colours on request. The material is high-frequency welded.
          • External gas tank

          • External gas tanks offer additional gas storage capacity in order to compensate for production fluctuations, consumption fluctuations, volume changes due to variations in temperature and consumer devices becoming idle, as well as to store already produced gas for future use.
            • Gas storage volumes up to 5,000 m³
            • Gas operating pressures between 20 and 35 mbar
          • Technical components

          • 1. Overpressure/underpressure safety unit, up to 20 mbar, heatable
            The overpressure/underpressure safety unit is a safety device that protects the roof system from damage if the pressure in the gas space is excessively high or low. The overpressure/underpressure safety unit is mounted on the outside of the container wall. The pressure safety unit uses immersion cups with a liquid receiver. The fill level of the liquid receivers is indicated by means of a check tube or inspection window.

            2. Gas level measurement (hydrostatic and mechanical)
            Hydrostatic fill level indication with signal:
            Hydrostatic fill level measurement is used to determine the height of the gas storage membrane at a specific point. The measuring principle of determining the height is based on hydraulic transmission. Explosion-protected with signal output (analogue 4 to 20 mA) and including VA cover.
        • Other services

          • Repair and replacement of other manufacturers' equipmen
          • Service openings
          • Service platforms
          • Double membranes for special-shaped containers (e.g. rectangular)
          • Quantity survey
          • Servicing
            • References

            • A number of projects that we have completed are listed for you below. Use the contact/enquiry form or get in touch directly by email to ask about a reference project near you.
                • Reference I

                • Region/country: Hesse, Germany

                  Number of containers/double-membrane roof systems: 5

                  Container diameter/variable gas storage volume:
                  1 x dia. 27.00 m/approx. 3,200 m³
                  4 x dia. 35.50 m/approx. 2,100 m³

                  Gas operating pressure: up to 18 mbar
                  • Reference II

                  • Region/country: Mecklenburg-West Pomerania, Germany

                    Number of containers/double-membrane roof systems: 3

                    Container diameter/variable gas storage volume:
                    3 x dia. 20.17 m/approx. 550 m³

                    Gas operating pressure: 5 mbar
                    • Reference III

                    • Region/country:  North Rhine-Westphalia, Germany

                      Number of containers/double-membrane roof systems: 2

                      Container diameter/variable gas storage volume:
                      1 x dia. 17.95 m/approx. 380 m³
                      1 x dia. 21.73 m/approx. 687 m³

                      Gas operating pressure:  3.5 mbar