TREATMENT METHOD OF DYEING WASTEWATER

摘要

PURPOSE: A method of dyeing wastewater is provided, which can reduce color intensity effectively and decompose nonbiodegradable polymer organics contained in dyeing wastewater, by an upflow anaerobic sludge blanket process (UASB) and so can discharge treated water of good quality. CONSTITUTION: The method comprises as follows: (i) adjust the pH of dyeing wastewater; (ii) hydrolyze and ferment organic acid of the pH adjusted dyeing wastewater through an upflow anaerobic sludge blanket process (UASB) (2); (iii) contact the dyeing wastewater passed the UASB to air at an air contact tank (3); (iv) hydrolyze and ferment organic acid of the air contacted dyeing wastewater through an upflow packed bed bioreactor (UFPB) (4); and (v) aerobic treat the wastewater passed the UFPB (4) at an aeration tank (5); (vi) coagulate the aerobic treated wastewater at a coagulation tank (7).