ALLWEILER pumps have long service life in organic waste processing

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Source: ALLWEILER GmbH

When used to process organic waste, commercially available pumps can only stay in service for a short period of time. But with ALLWEILER progressing cavity pumps, Marchfelder BioEnergie GmbH of  Austria has achieved much longer service periods.

When regular commercial pumps are used to process organic waste, they typically wear out after only a short period of time. Liquids pumped under these conditions attack pumps from two different angles: first with highly abrasive additives; second with liquids that have highly fluctuating pH values that exhibit a high level of chemical aggressiveness. These conditions are very tough on seals and elastomer stators. As a result, these parts must be changed often, increasing downtime. ALLWEILER progressing cavity pumps operating in an Austrian plant have proven that having the right pumps and the right materials can make a big difference.

BioEnergie GmbH, located in Austria's wine growing region, has pointed  the  way.  This  company worked together with plant builders Komptech Anlagenbau GmbH and ALLWEILER AG to optimize the materials used in these pumps. The results are significantly: longer service lives, even for pumps located at the beginning of the process where they are attacked the most.

The plant receives all conceivable types of organic waste. Household waste, leftover food, restaurant waste, and plant material are a few examples of material that finds its way to the plant. Total volume is approximately 15,000 metric tons every year, 5000 metric tons of which are sent to a dump or used as fertilizer.

Regular waste is received in its packaging and processed without being separated. Examples of this include glass, metal lids and seals, wooden pallets, plastic packaging, and even metal drums. The first step in the process reduces the material to a grain size of no larger than 60 mm. Once reduced in size, a conveyor belt carries the material to a separation container. Process water is added, causing heavy extraneous materials to sink to the bottom where they can be removed.

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