Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, PR China.
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, PR China.
Bioresour Technol. 2017 Nov;243:1020-1026. doi: 10.1016/j.biortech.2017.07.084. Epub 2017 Jul 17.
Membrane fouling is a problem in full-scale membrane bioreactors. In this study, bamboo charcoal (BC) was evaluated for its efficacy in alleviating membrane fouling in flat-sheet membrane bioreactors treating municipal wastewater. The results showed that BC addition markedly improved treatment performance based on COD, NH-N, total nitrogen, and total phosphorus levels. Adding BC slowed the increase in the trans-membrane pressure rate and resulted in lower levels of soluble microbial products and extracellular polymeric substances detected in the flat-sheet membrane bioreactor. BC has a porous structure, and a large quantity of biomass was detected using scanning electron microscopy. The microbial community analysis results indicated that BC increased the microbial diversity and Aminomonas, Anaerofustis, uncultured Anaerolineaceae, Anaerolinea, and Anaerotruncus were found in higher abundances in the reactor with BC. BC addition is an effective method for reducing membrane fouling, and can be applied to full-scale flat-sheet membrane bioreactors to improve their function.
膜污染是全尺寸膜生物反应器中的一个问题。在这项研究中，评估了竹炭（BC）在缓解处理城市废水的平板膜生物反应器中的膜污染方面的功效。结果表明，添加 BC 可显著改善基于 COD、NH-N、总氮和总磷水平的处理性能。添加 BC 减缓了跨膜压力速率的增加，并导致在平板膜生物反应器中检测到较低水平的可溶性微生物产物和胞外聚合物物质。BC 具有多孔结构，使用扫描电子显微镜检测到大量的生物质。微生物群落分析结果表明，BC 增加了微生物多样性，并且在含有 BC 的反应器中发现了更多的 Aminomonas、Anaerofustis、未培养的 Anaerolineaceae、Anaerolinea 和 Anaerotruncus。添加 BC 是减少膜污染的有效方法，可应用于全尺寸平板膜生物反应器，以改善其功能。
