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Brewery wastewater treatment and resource recovery through long term continuous-mode operation in pilot photosynthetic bacteria-membrane bioreactor
Science of the Total Environment ( IF 8.2 ) Pub Date : 2018-07-20 , DOI: 10.1016/j.scitotenv.2018.07.268
Haifeng Lu , Meng Peng , Guangming Zhang , Baoming Li , Yuanyuan Li

Photosynthetic bacteria (PSB) are considered ideal for high COD wastewater treatment and resource recovery. This work is the first continuous-mode long-term (440 days) pilot study (240 L) by using PSB-membrane (PSB-MBR) system for such purpose. Results showed that the system started-up in 27 days for brewery wastewater and then stably operated under various temperature, initial COD and pH conditions, which showed fast start-up and strong robustness. Comparing with small-batch PSB-MBR system, the capacity of pollutants treatment degradation rate in the pilot-continuous PSB-MBR system was promoted. The operation parameters for pilot-continuous PSB-MBR system were determined as follows: light-micro aerobic, 72 h hydraulic retention time, 1200 mg L−1 inoculum size and 1.0 g L−1 d−1 organic loading rate, 2.5 F/M. Under these conditions, the COD and NH4+ in effluent were below 80 and 15 mg L−1, respectively. The PSB cell production reached 483.5 mg L−1 d−1 with protein, polysaccharides, carotenoid, bacteriochlorophyll, and coenzyme Q10 of 420.9, 177.6, 2.53, 10.75, 38.6 mg g−1, respectively, showing great potential of resource recovery from organic wastewater. In addition, the collected biomass had no acute toxicity to crucian carps. This work provides a base for the scale-up of this novel technology.



中文翻译:

光合作用细菌-膜生物反应器通过长期连续模式操作进行啤酒废水处理和资源回收

光合细菌(PSB)被认为是高COD废水处理和资源回收的理想选择。这项工作是首次使用PSB膜(PSB-MBR)系统进行的连续模式长期(440天)初步研究(240 L)。结果表明,该系统可在啤酒废水中运行27天,然后在各种温度,初始COD和pH条件下稳定运行,这显示了快速启动和强大的鲁棒性。与小批量PSB-MBR系统相比,提高了中试连续式PSB-MBR系统中污染物处理降解率的能力。中试连续式PSB-MBR系统的操作参数确定如下:轻微有氧,72小时水力停留时间,1200 mg L -1接种量和1.0 g L -1  d-1有机物加载速率为2.5 F / M。在这些条件下,废水中的COD和NH 4 +分别低于80和15 mg L -1。PSB细胞产量达到483.5 mg L -1  d -1,蛋白质,多糖,类胡萝卜素,细菌叶绿素和辅酶Q10分别为420.9、177.6、2.53、10.75和38.6 mg g -1,显示了从有机资源回收的巨大潜力废水。此外,收集的生物质对cru鱼没有急性毒性。这项工作为扩大这项新技术提供了基础。

更新日期:2018-07-26
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