Theoretical Oxygen Demand (ThOD) Calculations Calculate the ThOD of 120 mg/L wastewater (CaHrO2N) assuming the following...
Please answer #5 4. What is the theoretical oxygen demand for a wastewater flow of 25 MGD (million gallons per day) containing 100 mg/L ethanol (C2H5OH)? 5. If this wastewater was discharged into a stream flowing at 10 m/s with an ultimate BOD of 5 mg/L, dissolved oxygen (DO) of 5mg/L, and deoxygenation rate coefficient ka of 0.2/day: (a) Find ultimate BOD of mixture just downstream of wastewater discharge. State all assumptions used. (b) In your opinion, is the wastewater...
Calculate the theoretical oxygen demand for a 130 mg/L aqueous solution of lactic acid (C3H6O3). Calculate the equilibrium concentration of dissolved oxygen in 25°C water at sea level (p = 1.00 atm), and again at 4000 m elevation in 5°C water. [Use the exponential p vs. z equation, not the empirical formula.]
6 MGD of wastewater with a dissolved oxygen concentration of 0.9 mg/L is discharged to a river flowing at 40 ft'/sec. The river initially is saturated with oxygen. The saturation DO is 11.30 mg/L. The oxygen content of the river (mg/L) immediately after mixing is most nearly: (conversion factor: 7.48 gal= 1 ft') 1.30 9. 34 9.00 8.85 7.24 other, write your answer 6 MGD of wastewater with a dissolved oxygen concentration of 0.9 mg/L is discharged to a river...
(20)1. A wastewater has a BOD5 of 192 mg/L, a reaction rate k of 0.12/day, and a total Kjeldahl nitrogen content (TKN) of 35 mg/L. (a) (b) Find the ultimate carbonaceous oxygen demand (CBOD). Find the ultimate nitrogenous oxygen demand (NBOD). Find the total ultimate (or theoretical) oxygen demand (TBOD). Find the remaining BOD (nitrogenous plus carbonaceous) after five days have elapsed.
Calculate the NBOD, CBOD, and ThOD of a waste containing 100 mg/L NH3-N and 100 mg/L isopropanol (C3H7OH) and 100 mg/l of methylamine (CH3NH2).
3) The company you work for plans to release a waste stream containing 10 mg/L of phenol (C6H5OH). Calculate the theoretical oxygen demand of this waste stream. It may be helpful to use the following (unbalanced) chemical equation and to remember that ThOD should be reported in mg 02/L. CoH5OH (s) + __ 02 (g) → __CO2 (g) + H20 (1)
2.) Determine the theoretical oxygen demand for the amino acids glycine and leucine using the formula discussed here. Theoretical oxygen demand (ThOD) for a nutrient source (CcHhON) is calculated by the below equation: mol substrate Convert to g O2 per g substrate by multiplying by molar mass of the substrate (in this case, glycine and leucine) and dividing by the molar mass of 02 (32 g/mol Calculate ThOD in units of g O2 per g substrate for both glycine and...
Question 2: (Marks 10) Wastewater with flow rate of 10,000 mº/d containing 280 mg/L of ethanolamine (C2H7NO) is to be treated by Activated Sludge Process (ASP). a) Estimate the Total Oxygen Demand (TOD) and Nitrogenous Oxygen Demand (NOD) of wastewater. b) Assuming that the COD removal rate in the aeration tank is 1.2 kg COD/mºday at 20°C, estimate the volume of the aeration tank required to achieve the effluent standard of 20 mg/L of COD.
23. Calculate the ThOD for wastewater containing 40 mg/l. sucrose C.H0.1. (atomic weights: C: 12 H:1 0:16) a 192 b 180 40.0 42.7 d e 85.4 other, write you answer- 24. When drinking water is disinfected with chlorine, an undesired byproduct, chloroform (CHCb). may be formed. Suppose a 70-kg person drinks 2 L of water every day for 70 years with a chloroform concentration of 0.04 mg/L (the drinking water standard). Potency factor for chloroform- 6.1 x 10 (mg/kg-day) The...
1. A wastewater sample contains 7.4 mg P/L PO, and 4.5 mg P/L P,0*. a. Calculate the total phosphorus as mg PL b. Find the concentrations of Poland P0,* in wastewater as mg PO/L and mg P.0. L, respectively.