By Davide Dionisi
"The e-book describes the right way to use kinetic types in keeping with the concept that of biomass progress and progress stoichiometry to simulate, layout and optimize organic wastewater remedy techniques. the final procedure utilized in the ebook is to put in writing cost equations for some of the procedures taking place and coupling them with mass balances particular for every technique. The ensuing method of non linear equations or of differential equation is then solved utilizing Microsoft Excel. via various the values of the layout variables, the method is designed, simulated and optimized. as well as the conventional layout variables resembling reactor quantity, substrate elimination, extra sludge creation, specific concentration is given within the ebook to pH calculation, that is quite vital for nitrogen removing and anaerobic methods. The ebook additionally indicates how this modeling method might be utilized to express case experiences suggested within the literature."-- Read more...
summary: "The booklet describes easy methods to use kinetic types in line with the idea that of biomass progress and development stoichiometry to simulate, layout and optimize organic wastewater therapy procedures. the overall process utilized in the booklet is to write down fee equations for a few of the strategies happening and coupling them with mass balances particular for every method. The ensuing approach of non linear equations or of differential equation is then solved utilizing Microsoft Excel. through various the values of the layout variables, the method is designed, simulated and optimized. as well as the conventional layout variables corresponding to reactor quantity, substrate removing, extra sludge construction, specific concentration is given within the e-book to pH calculation, that's really vital for nitrogen removing and anaerobic approaches. The ebook additionally exhibits how this modeling method should be utilized to express case reviews suggested within the literature."
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Additional resources for Biological wastewater treatment processes: mass and heat balances
The concepts of HRT, SRT and OLR are not limited to the activated sludge process but are applicable to any biological process. 5. 10) is a suspended growth process which is conceptually the same as the activated sludge process. 2 Typical Values of Activated Sludge Parameters. day Note: HRT: hydraulic residence time; SRT: solids residence time; OLR: organic load rate; COD: chemical oxygen demand. 10 Air React Settle Draw Sequencing batch reactor for carbon removal. one single vessel, instead than in two vessels, reactor and settling tank, as in the activated sludge process.
The produced gas is made only of methane and carbon dioxide. How much methane is produced in this process, per unit volume of the liquid phase? 14. 4. 36 gCOD l The products are acetic acid, methane and carbon dioxide, but carbon dioxide does not contribute to the COD balance (it contains no removable electrons). 067 g COD/g acetic acid. 107 g COD/l. 253 g COD/l, where the concentration is referred to the liquid phase (and not to the gas phase). From the oxidation reaction of methane we calculate that the conversion factor for methane into COD is 4 g COD/g methane.
5 Scheme of the main processes that occur during anaerobic digestion of biodegradable organic matter. 18 ◾ Biological Wastewater Treatment Processes acetic acid and other volatile fatty acids. Long-chain fatty acids are usually converted to acetic acid and hydrogen. The substrates for methane production are acetic acid and hydrogen. 7 PROCESS SCHEMES FOR BIOLOGICAL WASTEWATER TREATMENT In this section, we will introduce some of the main processes used for biological treatment of wastewaters. The modelling of most of these processes will be presented later in this book.
Biological wastewater treatment processes: mass and heat balances by Davide Dionisi