Device for water treatment and wastewater treatment using a floating bed filter

摘要

The present invention relates to the use of filter material having a density of 0.8 rho water rho filter material rho water. The filter material is used for a fluidised bed filtration method for water treatment and sewage purification. The invention also relates to a device that comprises a fluidised filter bed that contains filter material. The invention further relates to a method for actuating the fluidised bed filter and a method for washing the filter bed.