Dada Saubana Olorunsola, Thamariselvan Chidambaram, Jebur Mahmood, Wickramasinghe Sumith Ranil
Ralph E. Martin Department of Chemical Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
Interdisciplinary Centre for Energy Research, Indian Institute of Science, Bengaluru 560012, India.
Membranes (Basel). 2023 Nov 11;13(11):880. doi: 10.3390/membranes13110880.
In pursuit of sustainability, we explored replacing conventional dissolved air floatation (DAF) in poultry processing wastewater (PPW) treatment with a precisely tuned 0.02 µm stainless-steel ultrafiltration (SSUF) membrane. SSUF is a robust, homogenously porous membrane with strong chemical resistance, ease of cleaning, and exceptional resistance to organic fouling. Unlike polymeric membranes, it can be regenerated multiple times, making it a cost-effective choice due to its compatibility with harsh chemical cleaning. The PPW used for the study was untreated wastewater from all processing units and post-initial screening. Our study revealed the SSUF membrane's exceptional efficiency at eliminating contaminants. It achieved an impressive removal rate of up to 99.9% for total suspended solids (TSS), oil, grease, , and coliform. Additionally, it displayed a notable reduction in chemical oxygen demand (COD), biochemical oxygen demand (BOD), and total Kjeldahl nitrogen (TKN), up to 90%, 76%, and 76%, respectively. Our investigation further emphasized the SSUF membrane's ability in pathogen removal, affirming its capacity to effectively eradicate up to 99.99% of and coliform. The measured critical flux of the membrane was 48 Lmh at 38 kPa pressure and 1.90 m/s cross-flow velocity. In summary, our study highlights the considerable potential of the SSUF membrane. Its robust performance treating PPW offers a promising avenue for reducing its environmental impact and advocating for sustainable wastewater management practices.
为了追求可持续性，我们探索了用精确调谐的0.02 µm不锈钢超滤（SSUF）膜取代家禽加工废水（PPW）处理中的传统溶解空气浮选（DAF）。SSUF是一种坚固的、具有均匀孔隙的膜，具有很强的耐化学性、易于清洁以及对有机污染的卓越抗性。与聚合物膜不同，它可以多次再生，由于其与苛刻化学清洗的兼容性，使其成为一种具有成本效益的选择。用于该研究的PPW是来自所有加工单元且经过初步筛选后的未处理废水。我们的研究揭示了SSUF膜在去除污染物方面的卓越效率。它对总悬浮固体（TSS）、油、油脂和大肠菌群的去除率高达99.9%，令人印象深刻。此外，它在化学需氧量（COD）、生化需氧量（BOD）和总凯氏氮（TKN）方面也有显著降低，分别高达90%、76%和76%。我们的调查进一步强调了SSUF膜在去除病原体方面的能力，证实其能够有效根除高达99.99%的[此处原文缺失具体物质]和大肠菌群。在38 kPa压力和1.90 m/s错流速度下，测得的膜临界通量为48 Lmh。总之，我们的研究突出了SSUF膜的巨大潜力。其处理PPW的强大性能为减少其环境影响和倡导可持续废水管理实践提供了一条有前景的途径。
