Microbial growth in an activated sludge system can be described by the Monod model. If the maximum specific growth rate constant µmax is 1.2 day-1 and the half saturation coefficient Ks is determined to be 30 mg/L as COD, what should be the organic substrate concentration if you want to achieve a specific growth rate (µ) of 0.6 day-1? ( )

Microbial growth in an activated sludge system can be described by the Monod model. If the maximum specific growth rate constant µmax is 1.2 day-1 and the half saturation coefficient Ks is determined to be 30 mg/L as COD, what should be the organic substrate concentration if you want to achieve a specific growth rate (µ) of 0.6 day-1? ( )

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter10: Oxidation, Degradation, Corrosion, Electroprocessing, Batteries, And Fuel Cells

Section: Chapter Questions

Problem 10.1P

See similar textbooks

Similar questions

The water hardness in an area is reported as 700 ppm total dissolved solids. This is the same concentration as O 0.07% O 0.7% 07% O 0.007%
A water sample is tested to have an alkalinity of 300 mg/L as CaCO3. The Ca^2+ concentration is 120 mg/L as the ion, and the Mg^2+ concentration is 20 mg/L as the ion. The pH is 8.1. Find the total, carbonate, and noncarbonate hardness.
6 Ydu will obtain 2.0 L of tap water for you water hardness test. The water hardness test uses a precipitation reaction to precipitate the Calcium bicarbonate present out of solution by adding 1.9 g of Ca(OH) represented by the following equation: Ca(HC03|21ag) + Ca(OH)215) > 2CaCOsisi + 2 H20 ml What is the percent yield of CaCO3 produced in the hard water test? (fig. 4)
A water has an alkalinity of 225mg/L as CaCO3. The Ca+is 160 mg/L and Mg+is 40 mg/L.Calculate; (a)Total hardness (b)Carbonate hardness (c)Non –carbonate hardness
Salt conservation in the ocean takes the form of (sd)e ーマ-(oS ). | at Show that this reduces to as ージvs at
a. Find the time and distance downstream at whoch the oxyfen deficit is a macimum b. Find the minimum value of DO c. Sketch the DO concentration profile
A given sludge with 98% moisture content is X times more bulky than with 95% moisture content. The value of X is ______
JQuestion a) Write down the chemical equations for the reactions that take place in the DO test. b) Discuss the environmental significance of DO. c) Why should DO fixation be performed in the field rather than in the laboratory? Data Sheet Volume of solution for titration = Samples Sample A Sample B (i) (ii) (iii) (i) (ii) (iii) Average Average Titration reading Start End (+0.05mL) (+0.05mL) mL Volume of Na2S2O3 (mL) Dissolved Oxygen (DO)(mg/L)
The pOH of a basic solution is 3.33. What is pH?
A typical biological process in treating waste water using aerated lagoon can be described by one of the following schematic diagrams Cl, E (A)--BR AL Cl, ST CH BR AL E_ (B) ST Cl, (C) -BR AL ST (D)--BR CH AL ST
An activated sludge system using CSTR with sludge recycle has an influent flow rate (Q°) of 2.5 MGD that contains BOD of 200 mg/L. The volume of the aeration tank (CSTR) is 0.6 million gallons. The MLVSS (assume this is X,) in the aeration tank is 2000 mg VSS/L and the decay rate (b) is 0.1/day. The effluent from the secondary clarifier meets NPDES standards for suspended solids and BOD. The concentration of the settled sludge exiting the bottom of the secondary clarifier is 15,000 mg VSS/L. The sludge waste flow rate (Q") is 1 % of the influent flow rate, and the effluent flow rate (Qª) is ~99% of the influent flow rate. а) What is the hydraulic retention time, 0 (d)? b) What is the solids retention time, 0x (d)? Activated sludge with recycle с) What is the F/Ma ratio?
In a sludge digestion tank, if the moisture content of sludge is reduced from 90% to 80% then the percentage decrease in the volume of sludge is