Due to the new regulations for the disposal of wastes, the number of bio-mechanical treatment plants (MBA) will strongly rise in the near future: in Germany there are currently around 25 MBAs in operation and in the coming years this number could double. These plants however make high demands to the efficiency and performance of exhaust air treatment systems. Donaldson has developed filtration systems, which are already successfully used particularly for this task.
MBAs provides a particularly environmentally friendly and resource conserving kind of waste disposal. By legislation strict critical values for odour and dust emissions have been set and seeing that the population accepts bio-mechanical waste treatment, nuisances of bad smells would only be counterproductive.
For the manufacturers of exhaust air treatment systems these plants represent a great challenge, because waste is naturally completely heterogeneous the air conditioning must be prepared for all eventualities and must work effectively independent of the odour and dust concentrations. In addition, the risk of dust explosion can not be underestimated.
In recent years Donaldson has worked intensively on the problem of the filtration of exhaust flows from waste and can refer to more than 40 reference projects in this area. Recently Donaldson was commissioned by a leading German disposal firm to design a complete solution for a complex MBA-exhaust cleaning system. The project included erecting several explosion proof filtration systems incorporating the DALAMATIC range of filters, which have been specially developed for treating exhaust air from waste plants. Within the Donaldson division "Industrial Filtration Solutions" (IFS) a project team for waste management, with their specialist know-how, takes care of the project engineering of these complex plants.
Donaldson’s research and development department is currently intensively working on refining the dust collectors at the extraction points of the individual systems. The aim is to adapt the treatment systems even more specifically to the highly fluctuating waste substance characteristics whilst dependably complying with the emission and MAK values. Practical trials are also being carried out with the aim of further optimising the receptacle and separating performance of filters by adding treatment stages e.g. sifter systems.
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