压力生物氧化法处理印染废水试验研究

EXPERIMENTAL STUDIES ON TREATMENT OF PRINTING AND DYEING WASTEWATER BY PRESSURIZED BIOLOGICAL OXIDATION PROCESS

压力生物氧化法高速高效的根本在于保持高溶解氧浓度，能够在很广的氧吸收速率和生物动力学氧化速率范围内，保持最大的有机物去除率，直接辅以化学混凝气浮。处理ＢＯＤ５／ＣＯＤ为０．２０～０．２５、ＣＯＤ１０００ｍｇ／Ｌ左右、色度约４００倍的印染废水，出水ＣＯＤ＜１００ｍｇ／Ｌ、色度＜５０倍，电耗０．５Ｗｈ／ｍ３，ＰＦＳ投加量１００ｍｇ／Ｌ，占地０．３～０．５ｍ２／ｍ３·ｄ。为浓度高和难生物降解的印染废水处理创出了一条新路。

A pressurized biological oxidation process can retain a maximum ormoval over a wide range of oxygen uptakerate and biokinetic oxidation rate,the essence of which is maintaining a high dissolved oxygen concentration. Thepressurized biological oxidation process followed by floatation with chemical flocculation can efficiently remove the printing and dyeing wastewater with a BOD5/COD ratio of 0. 20-0. 25 from a COD of about 1000mg/L and acolour of about 400 times dilution ratio to below 100mg/L COD and below 50 times colour,only requiring a powerconsumption of 0. 5Kwh/m wastewater treated a PSF dosage of 100mg/L and an area per unit flow of 0. 3-0. 5m2/m3. d. This new advanced process is developed to treat refractory printing and dyeing wastewater of high strength.