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 87
... chlorine sponge , " " nitrite kick , " and " nitrite lock . " Nitrite reacts quickly with free chlorine and interferes with its ability to destroy coliform bacteria and pathogens in the chlorine contact tank and undesired fila- mentous ...
... chlorine sponge , " " nitrite kick , " and " nitrite lock . " Nitrite reacts quickly with free chlorine and interferes with its ability to destroy coliform bacteria and pathogens in the chlorine contact tank and undesired fila- mentous ...
Pagina 148
... chlorine and hydrogen peroxide ( H2O2 ) . Chlorine is less expensive than hydrogen peroxide and usually is available on - site at wastewater treatment plants as a disinfectant for the final effluent . Chlorine may be applied as gaseous ...
... chlorine and hydrogen peroxide ( H2O2 ) . Chlorine is less expensive than hydrogen peroxide and usually is available on - site at wastewater treatment plants as a disinfectant for the final effluent . Chlorine may be applied as gaseous ...
Pagina 242
... Chlorine Chloride ion Gaseous chlorine Cyanide Cobalt Cobalt ion Carbon monoxide Carbon dioxide Carbonate Carboxyl group Copper ion Copper oxide Trivalent chromium Hexavalent chromium Fluoride Iron Ferrous Ferric Ferrocyanide Iron ...
... Chlorine Chloride ion Gaseous chlorine Cyanide Cobalt Cobalt ion Carbon monoxide Carbon dioxide Carbonate Carboxyl group Copper ion Copper oxide Trivalent chromium Hexavalent chromium Fluoride Iron Ferrous Ferric Ferrocyanide Iron ...
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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