Combined industrial and domestic wastewater treatment by periodic allocating water hybrid hydrolysis acidification reactor followed by SBR |
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| Institution: | 1. School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Republic of Korea;2. Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Republic of Korea;1. The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand;2. The Bangchak Petroleum Public Company Limited, Bangkok, Thailand;3. Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, Thailand;1. LEESU (UMR MA 102, Université Paris-Est, Agro ParisTech), 61 avenue du Général De Gaulle, 94010 Créteil Cedex, France;2. LBE, INRA, 11100 Narbonne, France;3. Université de Lyon, Institut des Sciences Analytiques, UMR 5280 CNRS, Université Lyon 1, ENS-Lyon, 5 rue de la Doua, 69100 Villeurbanne, France;4. LCPP (UMR 0050, INRA), 39 bis rue de Dantzig, 75015 Paris, France;5. SIAAP, Direction du Développement et de la Prospective, 82 avenue Kléber, 92700 Colombes, France;6. LEESU (UMR MA 102, Université Paris-Est, Agro ParisTech), 6-8 avenue Blaise Pascal, Champs-sur-Marne, 77455 Marne-la-Vallée Cedex 2, France;1. Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, China;2. University of Chinese Academy of Science, Beijing 100049, China;3. China College of Materials Science and Engineering, Qingdao University of Science and Technology, China |
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| Abstract: | A pilot-scale hybrid hydrolysis acidification reactor (HHAR) with periodic water allocation mode operation followed by sequencing batch reactor (SBR) in anoxic and aerobic metabolic function was evaluated for the treatment of low-biodegradable combined industrial and domestic wastewater. The HHAR combines the advantages of both the UASB reactor and AF, omitting the three-phase separator. Furthermore, it has lower average up-flow velocity (0.38–0.92 m/h) and higher periodic up-flow velocity (6 m/h), which made the reactor keep higher MLSS concentration (more than 10,000 mg/L) and sludge-bed is in periodic “expansion-sedimentation-expansion” state. When HRT less than 10 h, the B/C variation was positive and reached the maximum value of 0.07 at 8 h. SBR with a total cycle period of 4.5 h was applied as the post-treatment process to remove residual COD, NH3-N and TN. At steady stage, the pilot-scale SBR effluent COD, NH3-N and TN concentration was 65, 0.75 and 17.71 mg/L, corresponding in this case to full-scale SBR plant effluent was 93, 16.4 and 34 mg/L. Comparison results indicated that the application of HHAR–SBR system to treat combined industrial and domestic wastewater can improve effluent quality significantly. |
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