B Berkefeld PurBev® Polisher The BERKEFELD PurBev® Polisher is an hygienic design particle filter for food and beverage water treatment. It is used for polishing after sand and activated carbon filtration. Adsorption Berkefeld PurBev® RO BERKEFELD PurBev® RO reverse osmosis plants are engineered according to hygienic design standards and meet the highest performance requirements of our customers in the food and beverage industry. Systems of this product range remove impurities and particles from water at efficiencies greater than 99%. Adsorption E Ecodisk™ Ecodisk™ - The Ecological solution for domestic wastewater treatment plants, from 100 to 10,000 Population Equivalent. Aerobic Wastewater Treatment H Hydrex™ Comprehensive range of water treatment chemicals to suit all water treatment needs. Sludge treatment Hydrex™ Biocides Hydrex™ offers a range of biocides for many applications. Sludge treatment Hydrex™ Other Water Treatment Chemicals Hydrex™ offers solutions for each specific requirement in terms of chemical water conditioning, including tailor-made formulations. Sludge treatment