Particle Size Distribution to Assess the Performance of Trickling Filters |
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| Institution: | 1. Asset Management Team, Severn Trent Water, Birmingham, UK;2. Department of Civil Engineering, Loughborough University, Loughborough, UK;3. UNESCO-IHE Institute of Water Education, Delft, The Netherlands;1. Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia;2. Institute of Technology, Estonian University of Life Sciences, Tartu, Estonia;1. INESC Coimbra, Rua Antero de Quental, 3000-033 Coimbra, Portugal;2. University of Coimbra, FEUC, Av Dias da Silva 165, 3004-512 Coimbra, Portugal;1. Department of Biotechnology, Shivaji University, Kolhapur 416004, India;2. Department of Biochemistry, Shivaji University, Kolhapur 416004, India;1. Institute of Biochemistry and Biophysics (I.B.B.), University of Tehran, Tehran, Iran;2. Department of Medical Nanotechnology, Science and Research Branch, Islamic Azad University, Tehran, Iran;3. Department of Biological Sciences, Kharazmi University, Tehran, Iran;4. Department of Microbiology, Faculty of Science, Islamic Azad University, Karaj, Iran |
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| Abstract: | Particle size distributions by laser scatter analysis were compared with other solids settlement performance indicators from trickling filters. Field and laboratory pilot plant data indicated smaller less flocculated solids from trickling filters than activated sludge or rotating biological contractors (RBC). Analysis of utility company treatment plants indicated settlement characteristics were linked to less consistent performance from the trickling filters compared to activated sludge. Experiments with synthetic sewage also demonstrated a link between fine influent solids and performance. The research found no simple association between residual COD to BOD ratio and type of bioreactor. Neither was it possible to establish a link between flow rate and solids characteristics in the effluents but more complex analysis including ambient temperature, flow and recycle rates was suggested. |
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