DWS BVBA products

In the direct-contact water (or wastewater) heater, there is direct contact between the flame, flue gasses, and the water that needs to be heated up. This unique technology is more energy efficient than the traditional water heater or boiler, where there is no contact between and flue gasses. Thanks to that in DWS unit, condensation heat can be used with an efficiency of  > 100% calculated to the lower heat value (lhv).

To effectively condition high biogas volumes of biogas low in hydrogen sulfide (H2S < 1%) DWS advises the application of our highly-effective biological scrubber. This biotrickling filter utilizes chemolithotrophic bacteria to oxidize the hydrogen sulfide into sulfur or sulfate at a low capital cost and without large energy inputs, as it can be in case of membrane separation or chemical biogas scrubbers. For the continuous operation, the biofilter requires only nutrients (nitrogen, phosphorous and potassium) and atmospheric air.