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AWM Munich upgrades to low energy filtration by using the BIOMEMBRAT® LE MBR process |
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Currently, many landfill operators worldwide have to make extensive technical and economic decisions concerning prospective leachate disposal. High amounts of leachate need to be treated but a reduction of leachate volume coupled with increasing concentration is expected in the medium-term. Therefore, flexible and innovative on-site-concepts are needed that can meet all requirements economically without unnecessary investment. In spring 2009, the biggest municipal waste management company in Germany – AWM in Munich – has decided, for the above-mentioned reasons, to modernise its leachate treatment plant, built in 1998, with an especially flexible low energy filtration system. Wehrle’s patented BIOMEMBRAT ® LE Membrane Bioreactor (MBR) process will be implemented. Two new and more efficient ultrafiltration membrane loops, continuously adjustable, including the possibility to rewind, substitute the original three-stage filtration unit. During the project, Wehrle’s ultrafiltration system impressively proved its efficiency. With steady degradation rates in the biological plant component, the energy used could be reduced in the ultrafiltration up to 75% – and this saving could be maintained at lower flowrates. The resulting economic advantage resulting from treating high amounts of annually fluctuating leachate could be passed on to AWM. The system is operated and managed by Wehrle. The modernisation of the ultrafiltration system was combined with an update of electrical systems. The control engineering and the process control systems have also been updated to state-of-the-art technology. The complete scope of supply and services has been ordered by AWM. AWM had already bought long-lasting plant components from Wehrle in 1998 so further reinvestment was not necessary. The long lasting cooperation between Wehrle and AWM Munich ensures an economically favourable and secure disposal of leachate for further 10 years of operation. Author: M. Sengenleitner / J. Pieper Please contact us for further information. |
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