Outline
The present invention relates to a method for treating municipal and industrial waste water performed in a sequential batch reactor (SBR) system, where the biological oxidation, nitrification, denitrification, phosphorous removal processes and solid separation takes place in one or multiple treatment basin(s), and more particularly to a process performed in a sequencing batch reactor (SBR) system for efficiently removing phosphorous from waste water treated. The invention also relates to an apparatus to perform the method according to the invention.