在这项研究中,电氧化(EO)和膜工艺用于从湿式洗涤器废水(WSW)中去除化学需氧量(COD)和总酚(TPh)。使用Al进行了EO实验,Fe,SS,Ti,石墨,活性炭布电极和Box-Behnken设计用于优化最大COD和TPh去除效率。此外,使用纳滤(NF270)和反渗透膜(SW30和BW30)对EO工艺进行膜过滤实验。在pH为8,电流密度为150A/m2时,达到了最大的COD(55%)和TPh(50%)去除效率,EO工艺的反应时间为180min。膜过滤结果表明,与BW30(91.15%)和NF270(80.11%)膜相比,SW30膜(95.18%)的COD去除效率最高。NF270、BW30和SW30膜的TPh去除效率为27.08%,96.06%,和98.02%,分别。还使用大肠杆菌研究了电氧化和膜过滤后的原始和处理过的湿式洗涤器废水的微生物细胞活力的影响。除了这些,对EO和膜过滤后的原始湿式洗涤器废水和经处理的WSW的生物膜抑制作用进行了测试,发现对金黄色葡萄球菌和铜绿假单胞菌的生物膜抑制作用最高,分别为76.43%和72.58%。分别,在原始WSW的1/20稀释样品中。这项研究表明,使用EO和压力驱动膜方法的集成过程是从WSW中去除COD和TPh的有效策略。
In this study, the electrooxidation (EO) and membrane processes were used for chemical oxygen demand (COD) and total phenol (TPh) removal from wet scrubber wastewater (WSW). EO experiments were carried out using Al, Fe, SS, Ti, graphite, active carbon cloth electrodes and Box-Behnken design were used for optimization of maximum COD and TPh removal efficiency. Moreover, membrane filtration experiments were conducted to EO process using nanofiltration (NF270) and reverse osmosis membranes (SW30 and BW30). The maximum COD (55%) and TPh (50%) removal efficiency was achieved at pH of 8, 150 A/m2 current density, and 180 min reaction time in EO process. Membrane filtration results showed that COD removal efficiency was the highest for SW30 membrane (95.18%) compared to BW30 (91.15%) and NF270 (80.11%) membranes. TPh removal efficiency in the NF270, BW30, and SW30 membranes was 27.08%, 96.06%, and 98.02%, respectively. The effect of microbial cell viability of the raw and treated wet scrubber wastewater after electrooxidation and membrane filtration was also investigated using E. coli. In addition to these, biofilm inhibition of the raw wet scrubber wastewater and the treated WSW after EO and membrane filtration were tested and the highest biofilm inhibition was found as 76.43% and 72.58% against S. aureus and P. aeruginosa, respectively, in 1/20 diluted samples of the raw WSW. This study suggests that the integrated process using EO and pressure-driven membrane methods are an efficient strategy for COD and TPh removal from WSW.