通过将未经处理的废水直接排放到环境中而污染水体的各种工业和常规的废水处理通常不足以有效地处理污染物。然而,膜生物反应器(MBR)为废水处理提供了一个有前途的解决方案,其中膜作为系统的心脏。在这项研究中,聚醚砜(PES)被用作膜材料和膜的亲水性通过与亲水性添加剂如聚乙二醇(PEG)和聚乙烯吡咯烷酮(PVP)的混合得到了调整,膜在处理废水中显示出有希望的结果,特别是在化学需氧量(COD)方面,生化需氧量(BOD),颜色去除。例如,PES-PEG膜显示COD,BOD,颜色去除96%,94%,92%,分别为95%,94%,92%,分别用于基于PES的商业膜。尽管制造的膜在COD方面的性能与商业膜相当,BOD,和颜色去除效率,渗透物收率还有改进的空间。值得注意的是,用PES-3PEG和PES-5PVP膜生产的MBR组件的平均渗透效率分别记录为市售膜(38L/m2h)的47%(18L/m2h)和13%(5L/m2h)。尽管渗透物产量存在差异,制造的膜还展示了去除微生物的显著功效,废水处理的一个关键方面。它们在这方面的性能被证明与商业膜高度可比,强调这些制造的膜在增强废水处理方面的潜力。
Various industries polluting the water bodies by discharging untreated wastewater directly into the environment and conventional wastewater treatments are often insufficient for effectively treating the pollutants. However, membrane bioreactors (MBRs) offer a promising solution for wastewater treatment where membrane serving as the heart of the system. In this study, polyethersulfone (PES) was used as the membrane material and hydrophilicity of the membranes were tuned up by mixing with hydrophilic additives such as polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP) and the membranes have shown promising results in treating wastewater, particularly in terms of chemical oxygen demand (COD), biochemical oxygen demand (BOD), and color removal. For example, PES-PEG membrane demonstrated COD, BOD, and color removal of 96 %, 94 %, and 92 %, respectively while those were 95 %, 94 %, and 92 %, respectively for PES-based commercial membrane. Although the performances of fabricated membranes were comparable to that of commercial membrane in COD, BOD, and color removal efficiencies, there is room for improvement in permeate yields. Notably, the average permeate efficiency for MBR modules produced with PES-3PEG and PES-5PVP membranes was recorded as 47 % (18 L/m2h) and 13 % (5 L/m2h) respectively of the commercial membrane (38 L/m2h). Despite the variance in permeate yields, the fabricated membranes also showcased significant efficacy in removing microorganisms, a crucial aspect of wastewater treatment. Their performance in this regard proved highly comparable to that of the commercial membrane, emphasizing the potential of these fabricated membranes in enhancing the wastewater treatment.