Sumisha A, Arthanareeswaran G, Lukka Thuyavan Y, Ismail A F, Chakraborty S
Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli 620015, India.
Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli 620015, India.
Ecotoxicol Environ Saf. 2015 Nov;121:174-9. doi: 10.1016/j.ecoenv.2015.04.004. Epub 2015 Apr 15.
In this study, laundry wastewater filtration was studied using hydrophilic polyvinylpyrollidone (PVP) modified polyethersulfone (PES) ultrafiltration membranes. The performances of PES/PVP membranes were assessed using commercial PES membrane with 10kDa in ultrafiltration. Operating parameters The influence of transmembrane pressure (TMP) and stirring speed on laundry wastewater flux was investigated. A higher permeate flux of 55.2L/m(2)h was obtained for modified PES membrane with high concentration of PVP at TMP of 500kPa and 750rpm of stirring speed. The separation efficiencies of membranes were also studied with respect to chemical oxygen demand (COD), total dissolved solids (TDS), turbidity and conductivity. Results showed that PES membrane with 10% of PVP had higher permeate flux, flux recovery and less fouling when compared with other membranes. Higher COD and TDS rejection of 88% and 82% were also observed for modified membranes due to the improved surface property of membranes. This indicated that modified PES membranes are suitable for the treatment of surfactant, detergent and oil from laundry wastewater.
在本研究中，使用亲水性聚乙烯吡咯烷酮（PVP）改性的聚醚砜（PES）超滤膜对洗衣废水过滤进行了研究。采用截留分子量为10kDa的商用PES膜对PES/PVP膜的性能进行评估。操作参数 研究了跨膜压力（TMP）和搅拌速度对洗衣废水通量的影响。在500kPa的TMP和750rpm的搅拌速度下，高浓度PVP的改性PES膜获得了55.2L/m²·h的较高渗透通量。还针对化学需氧量（COD）、总溶解固体（TDS）、浊度和电导率研究了膜的分离效率。结果表明，与其他膜相比，含10%PVP的PES膜具有更高的渗透通量、通量回收率且污染更少。由于膜表面性能的改善，改性膜对COD和TDS的截留率也更高，分别为88%和82%。这表明改性PES膜适用于处理洗衣废水中的表面活性剂、洗涤剂和油类。
