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You learn your effluent has 50 mg VSS/L. Your boss wants to know how this affects other effluent quality parameters. Estimate the oxygen demand of this material and the contribution to the effluent total nitrogen concentration (show calculations).

You learn your effluent has 50 mg VSS/L. Your boss wants to know how this affects other effluent quality parameters. Estimate the oxygen demand of this material and the contribution to the effluent total nitrogen concentration (show calculations).

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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You learn your effluent has 50 mg VSS/L. Your boss wants to know how this affects other effluent quality parameters. Estimate the oxygen demand of this material and the contribution to the effluent total nitrogen concentration (show calculations).
Transcribed Image Text:You learn your effluent has 50 mg VSS/L. Your boss wants to know how this affects other effluent quality parameters. Estimate the oxygen demand of this material and the contribution to the effluent total nitrogen concentration (show calculations).
12:07 & 3 ull 78% Possibly useful info eeq/mole cells Nitrogen Source AGpe (kJ/g cells) 3.33 AGpe (kJ/eeq cells) Ammonium (NH,") Nitrate (NO;) Nitrite (NO2") Dinitrogen (N2) 20 18.8 28 3.33 13.5 26 3.33 14.5 23 3.33 16.4 R = fe Re + f, Rs R = fe (Ra – Rd) + fs (Rc – Rd) So R = fe Ra + fs Rc – Rd (Note that -Rd denotes that the direction of the reaction is the opposite of that reported in the Rittmann/McCarty tables) Also note that if the direction of a reaction is reversed, the sign on the free energy value also changes). Chemical AGf (kJ/mol) species AG, AG, A =- OH- -198.76 ɛAG, Toluene n=-1if AG, <0 +114.22 (C,H3) n=1if AG, >0 Water -237 1 H+ -39.9 1+ A N2 f +f° =1 Carbon AG, = 35.09 – AG.° Dioxide -394 (CO2) ɛ = 0.6 Nitrate -111.34 (NO3) Molecular Weights Oxygen 16 Hydrogen 1 Nitrogen 14 Carbon 12 ΔG"ΣΔG, Products-ΣΔG, Reactants = [(c) (AG; of C) + (d) (AG; of D)] – [(a) (AG; of A) + (b) (AG¡ of B)] Sulfur 32 AG' = AG" + RT In [C][D]d where: Ris the ideal gas constant 0.00829 kJ/mol-ºK [A]°[B]» Tis the absolute temperature (°K) and °K = °C + 273.15 [In this equation, [] represents the activity of the constituent. The activity of the solutes (aqueous species) is close enough for our purposes to molar (M) concentration. The activity of gaseous species (e.g. H2, O2, CO2), are entered as partial pressures in atmospheres (atm). The solvent (typically water in our applications) is considered to have an activity of 1.] $3,29344 Comp sci.
Transcribed Image Text:12:07 & 3 ull 78% Possibly useful info eeq/mole cells Nitrogen Source AGpe (kJ/g cells) 3.33 AGpe (kJ/eeq cells) Ammonium (NH,") Nitrate (NO;) Nitrite (NO2") Dinitrogen (N2) 20 18.8 28 3.33 13.5 26 3.33 14.5 23 3.33 16.4 R = fe Re + f, Rs R = fe (Ra – Rd) + fs (Rc – Rd) So R = fe Ra + fs Rc – Rd (Note that -Rd denotes that the direction of the reaction is the opposite of that reported in the Rittmann/McCarty tables) Also note that if the direction of a reaction is reversed, the sign on the free energy value also changes). Chemical AGf (kJ/mol) species AG, AG, A =- OH- -198.76 ɛAG, Toluene n=-1if AG, <0 +114.22 (C,H3) n=1if AG, >0 Water -237 1 H+ -39.9 1+ A N2 f +f° =1 Carbon AG, = 35.09 – AG.° Dioxide -394 (CO2) ɛ = 0.6 Nitrate -111.34 (NO3) Molecular Weights Oxygen 16 Hydrogen 1 Nitrogen 14 Carbon 12 ΔG"ΣΔG, Products-ΣΔG, Reactants = [(c) (AG; of C) + (d) (AG; of D)] – [(a) (AG; of A) + (b) (AG¡ of B)] Sulfur 32 AG' = AG" + RT In [C][D]d where: Ris the ideal gas constant 0.00829 kJ/mol-ºK [A]°[B]» Tis the absolute temperature (°K) and °K = °C + 273.15 [In this equation, [] represents the activity of the constituent. The activity of the solutes (aqueous species) is close enough for our purposes to molar (M) concentration. The activity of gaseous species (e.g. H2, O2, CO2), are entered as partial pressures in atmospheres (atm). The solvent (typically water in our applications) is considered to have an activity of 1.] $3,29344 Comp sci.
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