Pharmaceutical Wastewater Treatment With Hydrolysis Acidifying-UNITANK-BAF Process

The dissertation focuses on treatment of the pharmaceutical wastewater generated in Northeast General Pharmaceutical Factory. The wastewater is combined with chemical pharmaceutical wastewater and biological pharmaceutical wastewater, so it has a complex composition and poor biodegradability. Consulted lots of reference documents, Hydrolysis Acidifying-UNITANK-BAF as main processes were used and integrated well for treatment of this kind of wastewater, parts of the processes were improved during the test period; some optimal control parameters for residual sludge primary treatment, hydrolysis acidifying, UNITANK and BAF processes were obtained. The paper also analyzed some sensitive topics, such as sludge bulking, impact load, unbalanced increment, biological deodorization and inhibition for methane gas generated according to the experiments. However, the study provided an available new route for high-concentration pharmaceutical wastewater treatment.The residual activated sludge has stronger flocculating adsorption to pharmaceutical wastewater. While sludge-water ratio at 1: 2.5, COD removal rate is up to 29%, SS removal rate is up to 84%, and biologic toxicity of the wastewater also can be reduced. So it provided a good basis preparation for follow-up organism treatment.Hydrolysis-acidifying reactor is classified as anaerobic and Micro-aerobic levels. The micro-aerobic circumstance improved physiological metabolism function of hydrolysis-acidifying facultative bacteria. The physical stirring function generated by micro-aeration improved the Hydraulic condition, means strengthened the transfer function between hydrolysis sludge and organic substrate and promoted the hydrolysis-acidification effect for high concentration refractory organic...