A. van de Groep & Zonen deploys Evodos separators for processing digestate The company A.van de Groep & Zonen B.V. from Bunschoten, The Netherlands, has aquired an Evodos SPT machine for processing digestate. A reservation for a second machine is made. Executive Board member Arie van de Groep is enthusiastic: The Evodos machines remove the suspended particles, especially the greasy ones, from our digestate. The effluent of the Evodos machine will subsequently be processed with our UF/RO installation. Using the Evodos technology as pre-treatment for the the membrane installation will lead to a constant and high flux. With our decanter centrifuge this appeared not to be possible.
De firma A.van de Groep & Zonen B.V is a wholesaler in fish and fish-related products. Of the objectives of this company is to use the entire fish and to eliminate the waste stream. For that purpose they depoly a digester installation which is fed with waste. The fish waste is picked up throughout the Netherlands.
The installation provides energy which is used for the cooling the fresh fish. The liquid waste stream of the digester still has a high energy value. With a state-of-the-art decanter centrifugal machine the suspended particles are separated, without adding flocculants or coagulants.
These again are fed into the digester. The centrate of the decanter is further processed with a UF/RO installation.
The maintenance on the membrane installation is high and the flux is too low. A consequence of the fact that the effluent (centrate) of the decanter is not clean enough. It still contains too many suspended particles. However, the Evodos SPT technology removes these particles. Without adding flocculants or chemicals.
The decanter will be replaced by Evodos SPT centrifugal technology. This leads to:
- A higher flux and lower maintenance costs of the membrane
installation.
- A very strong reduction in energy consumption
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