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How to handle a flood of food waste

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US-based Universal Filtration & Pumping Solutions discusses pelletising as a method of dealing with increased food waste during the COVID-19 pandemic

The recent global crisis has inspired a wave of panic buying; this is expected to result in unprecedented levels of food waste. For this reason, it is more important than ever to make sure our municipal facilities are running at their full potential. Responding to this aspect of the crisis is an essential way for municipalities and cities to show resilience.

Contrary to what many people think, food waste is extremely difficult to pump. Food waste contains metal objects (eating utensils, bottle tops, and cans), plastic, glass, paper, rubber, rock, string, rope, oils, clothing and all forms of food. Screening and grinding equipment are required to process the food waste and its contaminates. Often, there is a problem with an escape or bypass, whereby the food waste pulp will contain harsh abrasive materials (glass, ceramics, wire, metal, rocks, etc.) which will play havoc on progressive cavity rotors and stators, or membranes on the piston membrane and diaphragm pumps. With...

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