Puritek Research Institute, Puritek Co. Ltd., Nanjing, China.
Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; College of Engineering, Tunghai University, Taichung 407302, Taiwan.
Bioresour Technol. 2020 Aug;310:123376. doi: 10.1016/j.biortech.2020.123376. Epub 2020 Apr 18.
Sustainable treatment of wastewaters generated from paint production is increasingly posing an environmental concern. Recalcitrant paint wastewaters are mostly treated by energy and cost intensive physicochemical methods like incineration, distillation or advanced oxidation. This paper reported for the first time a case study applying biological treatment processes to properly handle a high-strength recalcitrant paint wastewater with 5-day biochemical oxygen demand (BOD)/chemical oxygen demand (COD) less than 0.02. A biological treatment scheme integrating anaerobic granular sludge blanket reactor, aerobic carrier biofilm reactor and aerobic activated sludge bioreactor was proposed and examined. Laboratory and full-scale trials demonstrated satisfactory operation with overall COD removal up to 99%. Besides yielding consistent effluent quality conforming to the discharge limits, the full-scale plant gained considerable savings in operating cost over a 5-year operation. With proper microbial adaptation and cultivation, as well as adequate reactor and process designs, the scheme offers a good feasibility for efficient and cost-effective treatment of the high strength and recalcitrant paint wastewater.
可持续处理来自涂料生产的废水正日益成为一个环境问题。难处理的涂料废水主要采用焚烧、蒸馏或高级氧化等能源和成本密集型物理化学方法进行处理。本文首次报道了应用生物处理工艺来妥善处理高浓度难处理涂料废水的案例研究，该涂料废水的五日生化需氧量（BOD）/化学需氧量（COD）小于 0.02。提出并考察了一种集成厌氧颗粒污泥床反应器、好氧载体生物膜反应器和好氧活性污泥生物反应器的生物处理方案。实验室和中试试验均证明了该方案的运行效果良好，总 COD 去除率高达 99%。该中试装置在 5 年的运行过程中不仅产生了符合排放标准的稳定出水水质，而且还节省了可观的运行成本。通过适当的微生物适应和培养，以及充足的反应器和工艺设计，该方案为高效、经济地处理高强度、难处理的涂料废水提供了良好的可行性。
