Zou Xiao-Ling
a School of Civil Engineering and Architecture, East China Jiaotong University , Nanchang , People's Republic of China.
Environ Technol. 2017 Oct;38(19):2497-2507. doi: 10.1080/09593330.2017.1349188. Epub 2017 Jul 8.
A combined process of coagulation-catalytic ozonation-anaerobic sequencing batch reactor (ASBR)-SBR was developed at lab scale for treating a real sodium dithionite wastewater with an initial chemical oxygen demand (COD) of 21,760-22,450 mg/L. Catalytic ozonation with the prepared cerium oxide (CeO)/granular activated carbon catalyst significantly enhances wastewater biodegradability and reduces wastewater microtoxicity. The results show that, under the optimum conditions, the removal efficiencies of COD and suspended solids are averagely 99.3% and 95.6%, respectively, and the quality of final effluent can meet the national discharge standard of China. The coagulation and ASBR processes remove a considerable proportion of organic matter, while the SBR plays an important role in post-polish of final effluent. The ecotoxicity of the wastewater is greatly reduced after undergoing the hybrid treatment. This work demonstrates that the hybrid system has the potential to be applied for the advanced treatment of high-strength industrial wastewater.
在实验室规模下开发了一种混凝 - 催化臭氧化 - 厌氧序批式反应器（ASBR）-SBR组合工艺，用于处理初始化学需氧量（COD）为21,760 - 22,450 mg/L的实际连二亚硫酸钠废水。使用制备的氧化铈（CeO）/颗粒活性炭催化剂进行催化臭氧化可显著提高废水的生物降解性并降低废水的微毒性。结果表明，在最佳条件下，COD和悬浮物的去除效率分别平均为99.3%和95.6%，最终出水水质可达到中国国家排放标准。混凝和ASBR工艺去除了相当比例的有机物，而SBR在最终出水的深度处理中起重要作用。经过混合处理后，废水的生态毒性大大降低。这项工作表明该混合系统具有应用于高强度工业废水深度处理的潜力。
