Process for elimination of phosphor and suspended matter from waste water.

摘要

Dissolved and suspended phosphates are substantially eliminated from a clarified waste water (3) low in solids. Precipitants and flocculants (4, 9) are added to the waste water low in solids to convert the dissolved phosphates into undissolved form and precipitated products and suspended matter are removed by microscreening (13) using mesh widths in the region of about 10 to 150  mu . The microscreening is preferably carried out in two stages with a prescreening using a mesh width of 60 to 150 mu and a fine screening using a mesh width of 10 to 80 mu .