ANAEROBIC DIGESTION Monitoring and Control
نویسنده
چکیده
Anaerobic digestion is an old biological wastewater treatment process, having first been studied more than a century ago. It is a multistep process in which organic matter is degraded into a gas mixture of methane and carbon dioxide by microorganisms. It thus reduces the Chemical Oxygen Demand (COD) of the influent and produces valuable energy (methane). The biological scheme involves several multi-substrate multi-organism reactions that are performed both in series and in parallel It has been experimentally demonstrated that the anaerobic digestion process is particularly adapted for concentrated wastes such as agricultural (e.g. plant residues, animal wastes) urban and industry wastewaters. In addition, this process is able to operate under severe conditions : high-strength effluents and short hydraulic retention times. Last but not least, anaerobic digestion is also often used as a sludge treatment for the volume reduction and the stabilization of primary and secondary sludge.
منابع مشابه
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The present study investigates the influence of individual and combined hydrogen peroxide and thermal pre-treatment of waste activated sludge on anaerobic digestion. For so doing, it employs anaerobic batch reactors in the mesophilic conditions. For comparison, soluble fractions of organic matter, biogas production, biochemical methane potential, removal of chemical oxygen demand (COD), and vol...
متن کاملImprovement of Anaerobic Digestion of Sewage Sludge, Using Combined Hydrogen Peroxide and Thermal Pre-Treatment
The present study investigates the influence of individual and combined hydrogen peroxide and thermal pre-treatment of waste activated sludge on anaerobic digestion. For so doing, it employs anaerobic batch reactors in the mesophilic conditions. For comparison, soluble fractions of organic matter, biogas production, biochemical methane potential, removal of chemical oxygen demand (COD), and vol...
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