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Classification by temperature. Psychro philes grow at temperatures below 25°C. Meso philes grow at temperatures between 25 - 45°C. Thermo philes grow at temperatures between 45 and 60°C. Classification by growth environment. Suspended growth Activated sludge Attached growth
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Classification by temperature • Psychrophiles • grow at temperatures below 25°C. • Mesophiles • grow at temperatures between 25 - 45°C. • Thermophiles • grow at temperatures between 45 and 60°C.
Classification by growth environment • Suspended growth • Activated sludge • Attached growth • Trickling filter • Rotating biological contactor
Ten Growth Requirements • Carbon source • Energy source • Terminal electron acceptor • Macro nutrients: C, N, H, O, P, K, S • Micro nutrients: Fe, Ni, Co, Mb, Zn, etc.
Ten Growth Requirements 6. Moisture 7. Appropriate temperature 8. Appropriate pH 9. Absence of inhibition 10. Mixing/contact
Wastewater Treatment in Developing Countries Community Biogas Plant in China
Filter Press http://www.metlabsolutions.com/Shriver%20Press%20-%20side.JPG