1. Treatment of swine wastewater in continuous activated sludge systems under different dissolved oxygen conditions: Reactor operation and evaluation using modelling
- Author
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Miyoko Waki, Fabrice Béline, Albert Magrí, Tomoko Yasuda, Yasuyuki Fukumoto, NATIONAL AGRICULTURE AND FOOD RESEARCH ORGANIZATION INSTITUTE OF LIVESTOCK AND GRASSLAND SCIENCE ANIMAL WASTE MANAGEMENT AND ENVIRONMENT RESEARCH DIVISION IBARAKI JPN, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Optimisation des procédés en Agriculture, Agroalimentaire et Environnement (UR OPAALE), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), and Universitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia
- Subjects
Biochemical oxygen demand ,SIMULTANEOUS NITRIFICATION AND DENITRIFICATION ,Swine ,WASTEWATER TREATMENT ,0208 environmental biotechnology ,02 engineering and technology ,010501 environmental sciences ,OXIDATION ,01 natural sciences ,Waste Disposal, Fluid ,OXYGEN ,NUMERICAL MODEL ,chemistry.chemical_compound ,WASTE WATER ,Bioreactors ,Nitrate ,ACTIVATED SLUDGE SYSTEMS ,POLLUTANT REMOVAL ,Nitrite shortcut ,ACTIVATED SLUDGE ,Nitrite ,PRIORITY JOURNAL ,Waste Management and Disposal ,REACTOR OPERATION ,Simultaneous nitrification and denitrification (SND) ,ACTIVATED SLUDGE MODEL (ASM) ,Nitrous acid ,Waste management ,Sewage ,NITRITE ,General Medicine ,DENITRIFICATION ,Pulp and paper industry ,6. Clean water ,Residus agrícoles -- Gestió ,NITRITE SHORTCUT ,DO CONTROL ,SIMULATION ,[SDE]Environmental Sciences ,ACTIVATED SLUDGE MODEL(ASM) ,Aeration ,ACTIVATED SLUDGE PROCESS ,EVALUATION STUDY ,NITRATE ,BIOCHEMICAL OXYGEN DEMAND ,Environmental Engineering ,WASTEWATER ,Bioengineering ,Agriculture--Environmental aspects ,NITRIFICATION ,FREE NITROUS ACIDS ,Ammonia ,Animals ,NONHUMAN ,Ammonium ,WASTE COMPONENT REMOVAL ,ARTICLE ,Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament dels residus [Àrees temàtiques de la UPC] ,Nitrites ,TEMPERATURE EFFECT ,0105 earth and related environmental sciences ,HIGH TEMPERATURE ,PIG ,AMMONIA ,SUIDAE ,Renewable Energy, Sustainability and the Environment ,AERATION ,DO control ,Nitrogen removal ,SIMULTANEOUS NITRIFICATION AND DENITRIFICATION (SND) ,NITROGEN REMOVAL ,020801 environmental engineering ,DISSOLVED OXYGEN ,NITROGEN ,Activated sludge ,WASTE WATER MANAGEMENT ,NITROUS ACID ,chemistry ,Activated sludge model (ASM) ,SIMULATION STUDIES ,PROCESS OPTIMIZATION ,PIG FARMING ,BIOCHEMICAL OXYGEN DEMANDS (BOD) - Abstract
International audience; Swine wastewater was treated in two continuously aerated activated sludge (AS) systems at high (AS1: 1.7'2.6 mg/L) and low (AS2: 0.04'0.08 mg/L) dissolved oxygen (DO), and at three temperatures (10, 20, and 30 °C). Biochemical oxygen demand (BOD) removal was >94.8%. Meanwhile, total nitrogen (N) removal was significantly higher in AS2, at 64, 89, and 88%, than in AS1, at 12, 24, and 46%, for 10, 20, and 30 °C, respectively. The experimental data were considered in a simulation study using an AS model for BOD and N removal, which also included nitrite, free ammonia, free nitrous acid, and temperature. Simulations at high-DO showed that ammonium was partly oxidized into nitrate but not removed, whereas at low-DO ammonium was removed mainly through the nitrite shortcut in simultaneous nitrification'denitrification. This study demonstrates that treatment at low-DO is an effective method for removing N, and modelling a helpful tool for its optimization. © 2017 Elsevier Ltd
- Published
- 2018
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