Wastewater BacteriaJohn 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 * 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. |
Dall'interno del libro
Pagina 11
... number in the presence of large numbers of dispersed bacterial cells. However, during floc formation the number of dispersed bacterial cells decreases and, consequently, the number of free-swimming ciliated protozoa decrease in number ...
... number in the presence of large numbers of dispersed bacterial cells. However, during floc formation the number of dispersed bacterial cells decreases and, consequently, the number of free-swimming ciliated protozoa decrease in number ...
Pagina 16
... large numbers in most wastewater treatment plants. Other bacteria such as Alcaligenes and Flavobacterium degrade mostly proteins and would be present in large numbers only in wastewater treatment plants that receive large amounts of ...
... large numbers in most wastewater treatment plants. Other bacteria such as Alcaligenes and Flavobacterium degrade mostly proteins and would be present in large numbers only in wastewater treatment plants that receive large amounts of ...
Pagina 18
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Pagina 29
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Pagina 42
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Sommario
PART II ENZYMES AND BACTERIAL GROWTH | 53 |
PART III NITROGEN PHOSPHORUS AND SULFUR BACTERIA | 75 |
PART IV FLOC FORMATION | 133 |
PART V FERMENTATION AND METHANE PRODUCTION | 153 |
PART VI TOXICITY | 165 |
PART VII FOAM AND MALODOR PRODUCTION | 211 |
REFERENCES | 235 |
ABBREVIATIONS AND ACRONYMS | 239 |
CHEMICAL COMPOUNDS AND ELEMENTS | 241 |
GLOSSARY | 245 |
INDEX | 251 |
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Parole e frasi comuni
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 ciliates degradation of soluble denitrification discharge effluent enzymes exoenzymes facultative anaerobic facultative anaerobic bacteria fatty acids fibrils FIGURE filamentous bacteria filamentous organisms floc formation floc particles foam free molecular oxygen Gerardi Copyright groups heavy metals hydrogen sulfide increase influent inorganic ionized ammonia ions large numbers malodorous compounds MCRT metazoa methane methane-forming bacteria mixed liquor MLVSS molecules nBOD NH4+ nitrate nitrification nitrifying bacteria nitrogen Nocardioforms nutrients occurs operational conditions organic compounds organotrophic orthophosphate oxidation pathogenic phosphorus phosphorus removal 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
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Pagina 247 - ... from an area of high concentration to an area of low concentration.
Pagina 125 - Standard Methods for the Examination of Water and Wastewater, published by the American Public Health Association...
Pagina 235 - Marais. 1980. A general model for the activated sludge process. Prog. Water Tech.
Pagina 167 - The sludge produced in individual on-site wastewater disposal systems such as septic tanks and cesspools. septic septico (1) Anaerobic.
Pagina 57 - 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 27 - Bacteria have an optimum pH at which they grow best. For most bacteria the optimum...
Pagina 34 - Bacteria that obtain their electrons or hydrogen atoms (each hydrogen atom has one electron) from organic compounds are organotrophs.
Pagina 235 - Paillard. 1990. Odor nuisances created by sludge treatment: problems and solutions. Water Sci. Tech.
Pagina 26 - Other substances diffuse across the cell membrane without an expenditure of cellular energy, but these substances require the assistance of a carrier molecule. The carrier molecule is a protein and is located in the cell membrane.