Treating Tapioca Starch Industrial Wastewater Using Two-Phase Multi-Staged Up-Flow Anaerobic Sludge Blanket (MS-UASB)

Q3 Environmental Science

Environment and Natural Resources Journal Pub Date : 2022-12-22 DOI:10.32526/ennrj/21/202200210

Thanapat Thepubon, P. Choeisai, K. Choeisai, Kazuaki Syutsubo

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引用次数: 1

Abstract

A laboratory-scale, two-phase multi-staged up-flow anaerobic sludge blanket (MS-UASB) treatment system was monitored over time in order to evaluate its treatment efficiency and performance when treating non-diluted industrial tapioca starch wastewater under ambient temperature in Thailand. The system consisted of an acidification (AC) reactor and MS-UASB reactor and was operated for 280 days. The two-phase MS-UASB achieved a maximum organic loading rate (OLR) of 8 kg-COD/m3/day for the overall system and reached 80.5% of chemical oxygen demand (COD) removal efficiency. Based on the inlet wastewater of each reactor, the AC reactor removed 61.85% of suspended solids and achieved acidification of the wastewater to produce volatile fatty acids at over 50%. Meanwhile, the MS-UASB reactor achieved 74.5% COD removal efficiency. Further analysis found that the increase in soluble extracellular polymeric substances per bound extracellular polymeric substances (S-EPS/B-EPS) was related to the floating sludge phenomenon, which occurred under excess OLR condition.

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两相多级上流式厌氧污泥膜(MS-UASB)处理木薯淀粉工业废水

对实验室规模的两相多级上流厌氧污泥床（MS-UASB）处理系统进行了长期监测，以评估其在泰国环境温度下处理未稀释工业木薯淀粉废水的处理效率和性能。该系统由酸化（AC）反应器和MS-UASB反应器组成，运行280天。两相MS-UASB对整个系统的最大有机负荷率（OLR）为8kg COD/m3/天，化学需氧量（COD）去除效率达到80.5%。基于每个反应器的进水，AC反应器去除了61.85%的悬浮固体，并实现了废水的酸化，产生50%以上的挥发性脂肪酸。同时，MS-UASB反应器对COD的去除率达到74.5%。进一步分析发现，每结合一种胞外聚合物，可溶性胞外聚合物（S-EPS/B-EPS）的增加与过量OLR条件下出现的浮渣现象有关。

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来源期刊

Environment and Natural Resources Journal Environmental Science-Environmental Science (all)

CiteScore

1.90

自引率

0.00%

发文量

审稿时长

8 weeks

期刊介绍： The Environment and Natural Resources Journal is a peer-reviewed journal, which provides insight scientific knowledge into the diverse dimensions of integrated environmental and natural resource management. The journal aims to provide a platform for exchange and distribution of the knowledge and cutting-edge research in the fields of environmental science and natural resource management to academicians, scientists and researchers. The journal accepts a varied array of manuscripts on all aspects of environmental science and natural resource management. The journal scope covers the integration of multidisciplinary sciences for prevention, control, treatment, environmental clean-up and restoration. The study of the existing or emerging problems of environment and natural resources in the region of Southeast Asia and the creation of novel knowledge and/or recommendations of mitigation measures for sustainable development policies are emphasized. The subject areas are diverse, but specific topics of interest include: -Biodiversity -Climate change -Detection and monitoring of polluted sources e.g., industry, mining -Disaster e.g., forest fire, flooding, earthquake, tsunami, or tidal wave -Ecological/Environmental modelling -Emerging contaminants/hazardous wastes investigation and remediation -Environmental dynamics e.g., coastal erosion, sea level rise -Environmental assessment tools, policy and management e.g., GIS, remote sensing, Environmental -Management System (EMS) -Environmental pollution and other novel solutions to pollution -Remediation technology of contaminated environments -Transboundary pollution -Waste and wastewater treatments and disposal technology