VERFAHREN ZUR ERHOEHUNG DER EFFEKTIVITAET VON WASSERREINIGUNGSANLAGEN

The essence of the process according to the invention comprises adding to the waste water to be cleaned, immediately prior to the water purification plant, an aqueous suspension containing minerals having high adsorption capacity, minerals having a high specific surface area and a cation-containing polyelectrolyte. It is expedient to prepare the aqueous suspension to have a density of 50 to 300 g/l and to comprise 50 to 90% by weight of minerals having high adsorption capacity, 5 to 40% by weight of minerals having a high specific surface area and 0.1 to 6% by weight of cation-containing polyelectrolyte. The mineral having high adsorption capacity is advantageously montmorillonite, Silit, kaolin, zeolite or similar materials. The mineral having a high specific surface area is advantageously ground expanded perlite. Modified polyacrylamide (polyamidoamine and/or polyDADMAC) has proven to be effective as the cation-containing polyelectrolyte.