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. |
Dall'interno del libro
Risultati 1-3 di 33
Pagina 96
... Denitrification Nitrogenous Compound Formula Nitrate ion NO3 Nitrite ion NO2 Nitric oxide NO Nitrous oxide N2O Molecular nitrogen N2 Energy Substrate X X Intermediate XXX X strate or ... Denitrification Gas Formula 96 DENITRIFYING BACTERIA.
... Denitrification Nitrogenous Compound Formula Nitrate ion NO3 Nitrite ion NO2 Nitric oxide NO Nitrous oxide N2O Molecular nitrogen N2 Energy Substrate X X Intermediate XXX X strate or ... Denitrification Gas Formula 96 DENITRIFYING BACTERIA.
Pagina 97
... denitrification is from 7.0 to 7.5 , while depressed activity for facultative anaerobic bacteria occurs at pH values < 6.0 and > 8.0 . Denitrification is biologically mediated and occurs more rapidly with increas- ing wastewater ...
... denitrification is from 7.0 to 7.5 , while depressed activity for facultative anaerobic bacteria occurs at pH values < 6.0 and > 8.0 . Denitrification is biologically mediated and occurs more rapidly with increas- ing wastewater ...
Pagina 98
... Denitrification tank . DENITRIFICATION TANK A denitrification tank ( Figure 11.4 ) is used with an aeration tank or series of aera- tion tanks to satisfy a total nitrogen discharge limit . In the aeration tank , ammoni- fication occurs ...
... Denitrification tank . DENITRIFICATION TANK A denitrification tank ( Figure 11.4 ) is used with an aeration tank or series of aera- tion tanks to satisfy a total nitrogen discharge limit . In the aeration tank , ammoni- fication occurs ...
Altre edizioni - Visualizza tutto
Parole e frasi comuni
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