ENVIRONMENTAL ENGINEERING: WATER POLLUTION For a solution containing 200 mg of glycine [CH2(NH2)COOH] whose oxidation can be represented as: 2 CH2(NH2)COOH + 3 O2 ---> 4 CO2 + 2 H2O + 2 NH3 NH3 + 2 O2 ---> NO3- +H+ + H2O FIND: The theoretical CBOD The untimate NBOD The total theoretical BOD.

ENVIRONMENTAL ENGINEERING: WATER POLLUTION For a solution containing 200 mg of glycine [CH2(NH2)COOH] whose oxidation can be represented as: 2 CH2(NH2)COOH + 3 O2 ---> 4 CO2 + 2 H2O + 2 NH3 NH3 + 2 O2 ---> NO3- +H+ + H2O FIND: The theoretical CBOD The untimate NBOD The total theoretical BOD.

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter6: Biological Processes

Section: Chapter Questions

Problem 6.3P

See similar textbooks

Related questions

Q: 1. A commercial laundry is consdiering constucing an ion exchange process to remove hardness from…

A: Its a multiple parts problem having more than 3 subparts. So i am allowed to solve 3 subparts in…

Q: Which of the following is/are correct: 1. X, =+ X, 2. X= BOD 3. BOD; = BOD 4. BOD, = where X and Xy…

Q: It is found in a water sample that it has insufficient alkalinity and therefore soda ash (Na2CO3) is…

Q: Environmental Engineering: Cyanide is used in the production of intermediates in the pharmaceutical…

A: Given:The constant rate (k) at 170ºC is 8 hr-1.Consider the volume of the plug flow reactor is…

Q: Compute the theoretical oxygen demand of 34 mg/L of bacterial cell C5H7NO2. Assume the following…

A: Theoretical Oxygen Demand-Oxygen required to oxidise the organic matter in a waste sample can…

Q: OD is widely used tomeasurethe concentration of biodegradable organic matters in a wastewater. For a…

Q: A CMFR is working at a steady state. The volume of the reactor and flow rate are 10m3 and 2.5m3/h…

Q: The following information is given for cadmium at 1atm: boiling point = 765 °C Hvap(765 °C) = 100…

A: Given: Boiling point = 765°C Melting point = 321°C Specific heat solid= 0.230 J/g°C Specific heat…

Q: The slow cooling process can effectively stabilize the components of clinkers produced in the…

A: in this question , we are asked to verify a statement regarding thermal temp control of burning…

Q: A water softener has 0.1 m3 of ion-exchange resin with an exchange capacity of 100 kg/m3 . The…

A: Given Exchange capacity =100 kg/m3 Consumption rate is 5,000 L of water per day water contains 270.0…

Q: 1-6. Įn a biological waste treatment system, solids may enter (b) Solids decay in the reactor at a…

A: Consider the given equation rs=-k1s2XS2+KsWhere,X=VSS concentration in the reactorAlsok1=8 mg DOCmg…

Q: Water with 90 mg/L of a degradable contaminant flows through a reactor. The influent flow rate…

A: Given, Degradable contaminant flow,D0=90 mg/lFlow rate = 100 m3/dReactor Volume V=200 m3kd=1.0 d-1

Q: An open cylindical tank contains 18925 Liters benzene ( Sa= 0.876). The diameter of the tank is 2 m.…

A: Volume of tank (V)=18925 litre Diameter of tank(d)=2m

Q: If the 3-day BOD (BOD3) of a waste is 100 mg/L & the BOD decay constant, k is 0.345 per day, its…

Q: A drinking water treatment plant wants to compare the efficacy of three different solid coagulants,…

A: The solubility product constant for alum, lime and ferric chloride are given as

Q: Some wastewater has a BOD, of 180 mg/L at 20°C. The reaction rate K at that temperature has heen…

Q: When IWW is discharged untreated to environment, which pollutants cause the depletion of natural…

A: For the given multiple-choice questions, the most relevant answer have to be found out.

Q: A dose of 100 me/l of alum is used in coagulating a turbid raw water. Calculate the sum of amount of…

Q: Failure to use proper gloves when handling chemicals could result in chemicals entering the body by:…

A: Given data: about how chemicals entering the body:

Q: If the 3-day BOD (BOD3) of a waste is 75 mg/L & the BOD decay constant, k is 0.345 per day, its…

Q: he ammonia in wastewater is to be converted to nitrate in a bioreactor. Initial concentration of…

A: Given data Initial concentration, Ci=145mg/L Conversion, X=95% Volume of reactor, V=50m3 Select a…

Q: Glycerin flows at 35 m through a 150 mm diameter new wrought iron pipe at a velocity of 3 m/s. It…

Q: A meat processing factory's raw effluent has a five-day BOD at 20°C of 1760 mg/1. If the k value is…

A: Part a.

Q: reaction equation is A+B=C and the reaction rate can be writtten as dCA/dt=r=-kCACB2. a) What is…

A: The order of a reaction is the sum of the power on the concentration terms for a rate law, Hence…

Q: Environmental Engineering: A reaction takes place in aqueous solution and is first order. The…

A: Calculating the rate constant for the reaction,

Q: The mean indoor airborne chloroform (CHCI,) conc. in a room was detemined to be 0.4 ug/m3. Use the…

Q: In a biological wastewater treatment system, which of the following conditions could be considered…

A: Anoxic conditions refer to which conditions in molecular oxygen is absent, which means electron…

Q: a) Explain the functions of the following in particle removal during water filtration in granular…

A: Water filteration It is process of treatment of water under various phases which includes- Primary…

Q: The most important buffer system in water is the carbon dioxide system of acid/base reactions.…

A: Alkalinity of any solution defined as the ability to neutralise the H+ ions in the solution. here…

Q: The discharge from a food processing plant is the only source of BOD in a river. The oxygensag curve…

A: Given data: Minimum DO concentration = 3.0 mg/l Saturation point = 10 mg/l u = 60 miles/day kr =…

Q: The SOo concentration in a stack is 500 ppm, the stack diameter is 12 ft, and the stack gas velocity…

A: Calculate volume of the gas Q=AvVt=Av Q=VolumetimeV=AvtV=π4122×6524×3600V=635154636.6 ft3 Convert…

Q: Use the table below to calculate the following: The concentration (in mg/L and mol/L) of the…

A: Calculate formula weights (FW) for Al2O3 and Al2(SO4)3.14H2O Take molecular weight of Al=27 g/mol,…

Q: A residential water softener has 0.2 m of ion exchange resin with an exchange capacity of 50 kg…

A: Given, Volume of resin, say V = 0.2 m3 Capacity of softener, say K = 50 kg CaCO3/m3 Flow rate, say Q…

Q: m and the other lighter and weighing 4000 N. aced in seawater. The density of sea water is 10 e…

A: Consider heavy sphere :buoyancy force Fb2=43πR3γwFb2=43π1.2231025×9.81=9097.78N∑…

Q: 1-6. In a biological waste treatment system, solids may enter in the influent, be created or…

A: Waste management decreases the impact of waste on the climate, wellbeing, etc. It can likewise help…

Q: Assume that the NO2 concentration in a house with a gas stove is .150 pg/m3. Calculate the…

A: Solution: Given: NO2 = 150 micro grams/m3

Q: A water contains 3.5 mg/L of ferrous iron (Fe2+), 0.3 mg/L of manganese (Mn2+), and 0.7 mg/L of…

A: The given data is shown below: Ferrous iron=3.5 mg/LManganese=0.3 mg/LAmmonia=0.7 mg/LFree residual…

Q: You are being consulted for the design of a coagulation-flocculation basin for a water treatment…

Q: A common vehicle in preservative fluids besides water would be: A. Phenol B. Methanol…

A: Vehicles are used as bases . These will reduce the effective charge of ions. Used in the breaking of…

Q: Three CSTRs are to be used in series. The second reactor has a volume twice that of the first and…

A: Initial concentration (C0) = 150 mg/LFlowrate (Q) = 100 gal/min90% removal, soFinal concentration…

Q: Which of the following statement is incorrect for the effect of SO2 on the environment? Sulfur…

A: Finding out incorrect statement for sulfer dioxide effect on environment.

Q: Wastewater is treated with an activated sludge plug flow reactor, similar to one seen at the Norman…

A: Given Data:Primary treatment Cs=100mg/Leffluent Limit Cc=5 mg/L BODbiomass concentration in the…

Q: The chief engineer in charge of refinery operations was not satisfied with the preliminary design…

Q: Charcoal samples from Stonehenge in England wereburned in O2, and the resultant CO2 gas bubbled into…

A: The given data is as follows: Amount of CaCO3=788 mgRadioactivity=1.5×10-2 BqNo. of…

Q: In Following chemical equation that describes the biological nitrification process: ?B1, B2, x1, x2…

Q: Organomercury compounds, such as MeHg*, are persistent pollutants which are extremely toxic to…

A: The toxicities of many metals, such as mercury and lead, are known to man since the dawn of…

Concept explainers

Total Energy Consumption

The term energy consumption signifies the consumption of electricity. Energy consumption as electricity is a primary demand for households, factories, industries, complexes, and commercial places. According to a report, the total U.S. energy consumption for 2018 was 101 BTU (British Thermal Units). It accounted for 17% of the total energy consumption of the world. The total energy demand for the U.S. as oil equivalent was estimated to be about 6804 kg of oil equivalent.

Question

ENVIRONMENTAL ENGINEERING: WATER POLLUTION

For a solution containing 200 mg of glycine [CH₂(NH₂)COOH] whose oxidation can be represented as:

2 CH₂(NH₂)COOH + 3 O₂ ---> 4 CO₂ + 2 H₂O + 2 NH₃

NH₃ + 2 O₂ ---> NO₃^- +H⁺ + H₂O

FIND:

The theoretical CBOD
The untimate NBOD
The total theoretical BOD.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Trending now

This is a popular solution!

Step by step

Solved in 5 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

You are being consulted for the design of a coagulation-flocculation basin for a water treatment plant. Ferric sulfate is available as a commercial coagulant and is popular at removing turbidity and color. The chemical reaction for its addition to water is: Fe2(SO4)3 + 3Ca(HCO3)2 ----> 2Fe(OH)3 (s) + 3CaSO4 + 6CO2Results of a jar test to determine the optimal coagulant dose are provided below. The initial water sample has a pH=6.5 and turbidity of 30 NTU. Ferric sulfate dose, mg/L: 5 10 15 20 25Turbudity, NTU: 15 5 1 0.9 2What is the optimal mass of ferric sulfate you would need to purchase every day to treat 106 gallons/day to a turbidity below 1 NTU (assume 100% purity of the coagulant).
Charcoal samples from Stonehenge in England wereburned in O2, and the resultant CO2 gas bubbled into asolution of Ca(OH)2 (limewater), resulting in the precipitationof CaCO3. The CaCO3 was removed by filtration anddried. A 788-mg sample of the CaCO3 had a radioactivityof 1.5x 10-2 Bq due to carbon-14. By comparison, livingorganisms undergo 15.3 disintegrations per minute pergram of carbon. Using the half-life of carbon-14, 5700 yr,calculate the age of the charcoal sample.
The discharge from a food processing plant is the only source of BOD in a river. The oxygensag curve shows a minimum DO concentration of 3.0 mg/L. The DO concentrationimmediately downstream of the discharge is at saturation (10.0 mg/L). Other characteristics ofthe system are as follows: u = 60 miles/day; kr = 0.80 days-1; kd = 0.20 days-1.a. Currently the food processing plant does not treat the waste. What percent removal ofthe BOD would be required to ensure that the DO of the river at any locationdownstream of the plant is always greater than 5.0 mg/L?b. How far downstream would the lowest DO levels occur?c. What ultimate BOD concentration of the mixture of the river and waste immediatelydownstream of the discharge would result in a minimum DO concentration of 5.0mg/L?
A Haldane modification of the Monod reaction is often used to describe the kinetics of substrate utilization when the substrate itself is toxic at high concentrations (phenol is an example of this). (1) Calculate the effluent concentration for a substrate exhibiting Haldane kinetics from a CSTR (continuously stirred tank reactor) and (2) compare this with the value if the substrate were not inhibitory (S2/Ki = 0) for the following conditions: V = 24 m3 Q = 9 m3/d S0 = 400 mg/L Y = 0.5 mg/mg q = 7.5 g/g•d K = 7 mg/L b = 0.1 d-1 Ki = 15 mg/L Hint: θx = (active biomass in the system)/(production rate of active biomass) = V/Q And 1/θx = (YqS)/(K + S + S2/Ki) – b
Aluminum pieces inadvertently collect on the filter. a. If left on the filter, will the percent yield of the alum be reported as too high or as too low? Explain. b. If the aluminum pieces are detected on the filter, what steps would be used to remedy the observation? Explain.
Transcribed Image Text:1-6. In a biological waste treatment system, solids may enter in the influent, be created or destroyed by biological growth or decay, and may leave in the effluent. Con- sider a waste treatment plant treating 1m'/s of an influent containing 55 mg/L of degradable organic solids. The wastewater also contains 180 mg/L of dis- solved organic carbon (DOC), which may be degraded. For every gram of dissolved organic matter that is degraded, the overall reaction converts a portion of the material into CO, and H20, and another portion into 0.4 g of new biomass. Analytically, this biomass and the degradable solids in the influent are both quantified as volatile suspended solids (VSS); that is, the degradable solids in the influent and the new biomass that grows in the reactor are indistinguishable from one another. (a) In a particular system, the dissolved organic matter (i.e., the substrate, S) is removed from solution at an overall rate (including both the conversion…
1. Industrial representatives claim that the NAAQS for S02 is so low that one exceeds it if one strikes a simple woodenmatch in a modest-sized room. Is this true?(a) Calculate the concentration (in µg/m3) expected for striking such a match in a room that is 15 ft by 15 ft by 8 ft. A typical2-inch wooden match contains ≃ 2.5 mg of sulfur.
Environmental Engineering: Cyanide is used in the production of intermediates in the pharmaceutical industry. A small resulting waste stream containing an organic cyanide, R-CN, is to be treated by high a temperature degradation process that has a constant rate of 8 hr-1 (at 170oC). What size of Plug Flow Reactor (PFR) is required to reduce the R-CN concentration from 2000mg/L to 5mg/L, for a waste stream with a flow rate of 30L/min? Assume temperature remains constant in the PFR.
A reaction equation is A+B=C and the reaction rate can be writtten as dCA/dt=r=-kCACB2. a) What is the order of this reaction b)When CA = 100mg/L, CB= 15mg/L and r=1mg/L.s what is the rate constant k c) What will be the reaction rate r when CB is reduced to 5mg/L and CA is maintained the same.
The SOo concentration in a stack is 500 ppm, the stack diameter is 12 ft, and the stack gas velocity is 65 ft/secl The gas temperature and pressure are 390 °F ami 1 atm. Calculate the approximate SO2 mass emission rate in Ih/day. (The atomic weight of S - 32 and the atomic weight of O « 16)a. 12,300 Ih/dayb. 16,400 Ih/daye. 24,600 Ih/dayd. 32,800 Ib/day
In wastewater treatment plants, ammonium ion is removed from the water by raising the pH to form ammonia in an air stripping process described on p 65, in the textbook. This is the equilibrium reaction that describes the process of ammonium conversion to ammonia: NH4+ ⇄ NH3,aq + H+ Ammonia in the water then readily converts to ammonia gas, a) Plot a graph showing the concentration of ammonium ion as a function of pH. Use an Excel spreadsheet.b) If the wastewater pH is raised to 10, what fraction of ammonium ion did not react to form ammonia?
A rapidly mixed tank consists of a treatment unit used to disinfect a solution. The solution enters the 2000 m3 tank at a rate of 0.4 m3/s. The pollutant contains 7.94 CFU per liter and has no 0 mg/l of chlorine. The treatment unit uses a stock solution containing 750 mg/L which is released a rate that will cause the chlorine concentration in the tank to be 2 mg/L. The chlorine reacts with the water in such a way that it is depleted at a rate (in mg/L-h) given by rcl = ( -0.45 / h) CCl. When exposed to chlorine, the bacteria die off at a rate (in cells/L-s) given by:a) Calculate the required flow rate in L/s of the stock solution when the system is operating at steady state, including a schematic of the system.b) Determine the bacterial concentration (in CFU/L) thar should be expected in the effluent from the tank?