To dispose of food waste directly in the dishwashing area in an efficient and hygienic manner, without the need for additional manual transfer, storage, or transport, AVERMANN Laser- und Kantzentrum GmbH developed the RW-101 food waste reduction system.
The RW-101 is designed to reduce food waste, enabling the hygienic and efficient disposal of food scraps from commercial kitchens and cafeterias. These scraps are fed directly from plates or buckets into the machine’s feed hopper and are ground into a pulpy, pumpable mass by an electrically powered cutting or grinding mechanism. The slurry is then pumped into a central tank via the built-in NIROSTAR impeller pump from ZUWA. This tank can then be emptied periodically using a tanker truck, and the slurry can be transported to a processor, such as a biogas producer.
The feed hopper of the RW-101 holds approximately 35 liters of food waste, which is mixed with about 2 liters of water and ground into a slurry. This process takes between 60 and 90 seconds. Meanwhile, the slurry is continuously pumped out using the NIROSTAR 2000-D impeller pump from ZUWA and discharged via a pipe or hose into a collection tank (also known as a bio-tank).
The NIROSTAR 2000-D impeller pump from ZUWA is dry self-priming, meaning it does not need to be filled before starting operation. The maximum flow rate is 166 liters per minute at a delivery pressure of up to 3 bar—which corresponds to a delivery head of 30 meters. A transport distance of 25 to 40 meters from the RW-101 to the respective biotank is therefore no problem for the pump. The material of the NIROSTAR pumps is designed to handle the viscous food waste slurry. The pump body is made of stainless steel, while the impeller and seals are made of durable rubber (Perbunan or natural rubber).