Wastewater BacteriaWiley, 14 apr 2006 - 272 pagine A practical guide to wastewater bacteria and the roles they perform in wastewater treatment Communicating material in a practical manner for operators and technicians who regulate and troubleshoot their wastewater treatment processes, Wastewater Bacteria discusses the effective control and proper operation of aerobic (activated sludge) and anaerobic (anaerobic digesters) biological treatment units to ensure that an adequate, active, and appropriate population of bacteria is present in each treatment unit. It is a hands-on guide to understanding the biology and biological conditions that occur at each treatment unit. Avoiding unnecessary technical jargon and chemical equations, Wastewater Bacteria, the fifth book in the Wastewater Microbiology Series, explores and explains: * Bacteria and the wastewater environment * Enzymes and sludge production * Nitrogen, phosphorus, and sulfur bacteria * Floc formation and filamentous organisms * Nitrification and denitrification * Sulfate reduction, fermentation, and methane production * Toxicity * Foam and malodor production The goal of Wastewater Bacteria is to enable plant operators to achieve the twofold basic objectives of wastewater treatment-to degrade organic wastes to a level where a significant, dissolved oxygen demand is not exerted upon receiving waters and to remove nutrients to levels where photosynthetic organisms in receiving waters are limited in their growth. This straightforward manual equips plant technicians to meet these objectives with essential information to understand the biological processes and organisms involved in wastewater treatment. |
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Pagina 108
... solution that contains the nutrients as compared to the surface area of the floc bacteria . Of the filamentous organisms that proliferate in a nutrient deficient condition , the Nocardioforms are foam producers . Foam typical of ...
... solution that contains the nutrients as compared to the surface area of the floc bacteria . Of the filamentous organisms that proliferate in a nutrient deficient condition , the Nocardioforms are foam producers . Foam typical of ...
Pagina 188
... solution through their adsorption to the ionized or active sites on the fibrils . Toxic wastes that damage the fibrils or neutralize the active sites result in the inabil- ity of the floc particles to remove large quantities of fine ...
... solution through their adsorption to the ionized or active sites on the fibrils . Toxic wastes that damage the fibrils or neutralize the active sites result in the inabil- ity of the floc particles to remove large quantities of fine ...
Pagina 199
... solution . If the metals stay in solution , the metals cannot cause toxicity but do pass through the wastewater treatment plant . Primary clarifier Aeration tank Secondary clarifier Approximately 20 % of influent metals removed in ...
... solution . If the metals stay in solution , the metals cannot cause toxicity but do pass through the wastewater treatment plant . Primary clarifier Aeration tank Secondary clarifier Approximately 20 % of influent metals removed in ...
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absorbed accumulation acetate activated sludge process addition aeration tank aerobic alkalinity amino acids anaerobic bacteria anaerobic digester anoxic approximately bacterial cells biological treatment unit carbon dioxide cellular chemical concentration contain decrease degradation denitrification discharge dissolved oxygen effect effluent energy enter enzymes Equation example fatty acids fermentative FIGURE filamentous bacteria filamentous organisms floc particles foam formation free molecular oxygen glucose groups growth heavy metals hydrogen hydrogen sulfide increase industrial influent inorganic ionized ammonia ions malodorous measures metals methane methane-forming bacteria Michael H molecules nitrate nitrification nitrifying bacteria nitrogen nutrients obtain occurs operational operational conditions organic compounds orthophosphate oxidation phosphorus presence primary production proteins quantity reduced relatively released removal secondary clarifier septage significant solids soluble cBOD solution structure substrate sulfate sulfide sulfur surfactants Table temperature toxic wastes undesired values volatile wastewater treatment plants