Patent ID: 6080317
Filing Date: 2000-06-27
Classification: B01D,C02F

Abstract:
A process for purification of untreated waste water, comprising the steps of(1) providing a filtration cycle by(a) feeding the untreated waste water (11, 14) through a reservoir (15) into an intake of a filtration stage (19);(b) filtering the untreated waste water through the filtration stage (19), separating the untreated waste water into filtered waste water (21) and retained waste substrate (20);(c) recycling the retained waste substrate (20) back into the reservoir (15), forming a concentrate (29); and(2) providing a treatment cycle by(d) feeding the concentrate (29) from a discharge side of the reservoir (15) into a reaction container (31) to produce a treated concentrate;(e) recycling a first portion (47) of the concentrate treated in step (d) back into the reservoir (15), whereby the first portion of the treated concentrate is returned to the filtration cycle.