水解酸化-厌氧-好氧法处理苯甲酸类化工废水研究

以某化工生产企业废水为例，介绍了水解酸化-厌氧-SBR工艺处理高浓度苯甲酸类生产废水的工程实例，该工程设计规模为70m^3／d，综合进水CODcr高达15000mg／L。实践表明，该工艺处理苯甲酸类废水是一种经济有效的处理方法。利用水解酸化对废水进行预处理，不仅有效地去除了77％的CODcr，还大幅提高了废水的可生化性，使BOD5／COD值由原水的0．33升高到O．54，提高了废水的可生化性，减轻了后续生化处理的负荷，并使最终出水CODcr小于500mg／L，出水可达《污水综合排放标准》（GB8978～1996）三级排放标准。

Research on Treatment of Benzoic Acid Wastewater by Hydrolysis-Anaerobic-Aerobic Method

Taking the wastewater from a manufacturer as example, this paper introduces the project example of treating high concentration benzoic acid wastewater with hydrolysis - anaerobic - aerobic method. The design scale of this project is 70 m3/d with influent CODor of up to 15000 mg/L. The results show that the process is economical and effective for treating benzoic acid wastewater. The removal rate of CODe, is about 77% with hydrolysis and biodegradability of the wastewater is greatly improved with BODJ CODor ratio increased from 0. 33 to 0. 54. The CODcr in effluent is less than 500 mg · L-1 , reaching the discharge standard（ GB 8978 -1996） III for integrated wastewater.