Assessment of Membrane Bioreactor in Treating Spent Sulfidic Caustic Wastewater: Effects of Organic Biomass Concentration and Solid Retention Time

Chemical Engineering Research Bulletin Pub Date : 2017-09-10 DOI:10.3329/CERB.V19I0.33803

N. S. A. Mutamim, Z. Z. Noor

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引用次数: 5

Abstract

This paper presents a study on the performance of an Aerobic Submerged u-shaped membrane bioreactor (ASMBR) in treating sulfidic spent caustic (SSC) in terms of mixed liquor suspended solid (MLSS) concentration and solid retention time (SRT). SSC wastewater is categorized as high strength wastewater and consists of high inorganic and organic matter. U-shape membrane bioreactors have a higher tendency to foul compared to other types of MBR. MLSS concentration and SRT are the major parameters when operating membrane bioreactor. In this study, COD removal recorded reduction of more than 95% for average MLSS concentration runs and 90% for SRTs runs. Meanwhile, sulfide was removed 99%, and formed up to 79% of sulfate. The biofouling for MLSS concentration and SRTs were observed through TMP rate change and TMP average performance, TMP trend and SMP and EPS trends. Biocake layer and biolayer deposited on membrane surface was found influenced by biomass, the inert particulate biomass products accumulating in the reactor. Chemical Engineering Research Bulletin 19(2017) 102-110

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膜生物反应器处理硫酸烧碱废废水的效果评价:有机生物质浓度和固体停留时间的影响

研究了好氧u型膜生物反应器(ASMBR)处理含硫废碱(SSC)的混液悬浮固体(MLSS)浓度和固体停留时间。SSC废水属于高强度废水，由高无机物和有机物组成。与其他类型的MBR相比，u型膜生物反应器具有更高的发霉倾向。MLSS浓度和SRT是膜生物反应器运行的主要参数。在本研究中，COD去除率记录了平均MLSS浓度运行降低95%以上，srt运行降低90%以上。同时，硫化物被去除99%，形成高达79%的硫酸盐。通过TMP速率变化、TMP平均性能、TMP趋势、SMP和EPS趋势观察MLSS浓度和srt的生物污染情况。发现生物炭层和沉积在膜表面的生物层受生物质的影响，惰性颗粒生物质产物在反应器中积累。化工研究通报19(2017)102-110

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Chemical Engineering Research Bulletin

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