John Wiley & Sons, 20 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
* 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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PART II ENZYMES AND BACTERIAL GROWTH
PART III NITROGEN PHOSPHORUS AND SULFUR BACTERIA
PART IV FLOC FORMATION
PART V FERMENTATION AND METHANE PRODUCTION
PART VI TOXICITY
PART VII FOAM AND MALODOR PRODUCTION
ABBREVIATIONS AND ACRONYMS
CHEMICAL COMPOUNDS AND ELEMENTS
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2006 John Wiley acetate activated sludge process aeration tank aerobic alkalinity amino acids anaerobic digester anoxic bacterial cells Beggiatoa bioaugmentation bioaugmentation products biological treatment unit biomass carbon and energy carbon dioxide cell membrane cell wall cellular chemical degradation of soluble denitrification discharge effluent enzymes exoenzymes facultative anaerobic facultative anaerobic bacteria fatty acids fermentative bacteria fibrils FIGURE filamentous bacteria filamentous organisms floc formation floc particles foam free molecular oxygen Gerardi Copyright groups heavy metals hydrogen sulfide hydrolytic bacteria increase influent inorganic ions large numbers malodorous compounds MCRT metazoa methane methane-forming bacteria mixed liquor MLVSS molecules nBOD nitrate nitrate NO3 nitrification nitrifying bacteria nitrogen Nocardioforms nutrients occurs operational conditions organic compounds organotrophic orthophosphate oxidation pathogenic phosphorus poly-P bacteria primary clarifier proteins protozoa quantity reduced released secondary clarifier septage septic sewer system sludge production solids substrate sulfate reduction sulfur surfactants Table temperature toxic wastes volatile Wastewater Bacteria wastewater treatment plants
Pagina 246 - ... from an area of high concentration to an area of low concentration.
Pagina 124 - Standard Methods for the Examination of Water and Wastewater, published by the American Public Health Association...
Pagina 236 - White, D. 2000. The Physiology and Biochemistry of Prokaryotes. Oxford University Press, New York.
Pagina 234 - Marais. 1980. A general model for the activated sludge process. Prog. Water Tech.
Pagina 166 - The sludge produced in individual on-site wastewater disposal systems such as septic tanks and cesspools. septic septico (1) Anaerobic.
Pagina 56 - If an enzyme is capable of acting on more than one substrate, it usually acts on substrates with the same functional group [eg, carboxyl ( — COOH) or hydroxyl ( — OH)], or the same kind of chemical bond (Table 7.1).
Pagina 26 - Bacteria have an optimum pH at which they grow best. For most bacteria the optimum...
Pagina 33 - Bacteria that obtain their electrons or hydrogen atoms (each hydrogen atom has one electron) from organic compounds are organotrophs.
Pagina 234 - Paillard. 1990. Odor nuisances created by sludge treatment: problems and solutions. Water Sci. Tech.