Families in a community in a developing country use large, 200.0 L drums to un-treated surface water. You are designing a device that is designed to dose the volume with a coagulant, stir to allow flocculation, then add chlorine tablets to disinfect the water. The water is 25 °C and initially contains 1.0E+09 particles per L. The initial particles can be assumed to be spherical, 15.0 micrometers in diameter, and with a density of 1.675 g/mL. a. If the drums have a diameter of 572 mm, how long will it take for the particles to completely settle without any coagulation or flocculation? (answer in seconds) You have determined that you can achieve complete destabilization of particles by achieving an ionic strength of 0.01 M or higher. If you use alum (Al2(SO4)3) as a coagulating agent, what mass of alum must be added per batch of 200 L? (answer in grams) How many joules of energy would be required to stir the drum at a mixing intensity of 150 s-l for 20 minutes? If the drum is stirred and flocculation occurs according to the values provided in part (c), how many initial particles will be in each newly formed aggregate?

Families in a community in a developing country use large, 200.0 L drums to un-treated surface water. You are designing a device that is designed to dose the volume with a coagulant, stir to allow flocculation, then add chlorine tablets to disinfect the water. The water is 25 °C and initially contains 1.0E+09 particles per L. The initial particles can be assumed to be spherical, 15.0 micrometers in diameter, and with a density of 1.675 g/mL. a. If the drums have a diameter of 572 mm, how long will it take for the particles to completely settle without any coagulation or flocculation? (answer in seconds) You have determined that you can achieve complete destabilization of particles by achieving an ionic strength of 0.01 M or higher. If you use alum (Al2(SO4)3) as a coagulating agent, what mass of alum must be added per batch of 200 L? (answer in grams) How many joules of energy would be required to stir the drum at a mixing intensity of 150 s-l for 20 minutes? If the drum is stirred and flocculation occurs according to the values provided in part (c), how many initial particles will be in each newly formed aggregate?

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter5: Separation Processes

Section: Chapter Questions

Problem 5.18P

See similar textbooks

Related questions

Q: A beaker is filled with a liquid up to the mark of one litre and weighed. The weight of the liquid…

A: Given :- weight of liquid = 6.5 N Volume of liquid = 1L To find :- specific gravity of…

Q: You are designing a reactor that uses chlorine in a plug flow reactor or a completely stirred tank…

A: Given Min contact time = 30 min Water treated at a rate of 1000 gal/min

Q: In a titration of dilute sulfuric acid, H2SO4, with sodium hydroxide, NaOH, how many milliliters…

A: The chemical reaction is given as H2SO4 (aq) + 2NaOH(aq) --> Na2SO4(aq) + 2H2O(l)

Q: The results of a multiple-tube fermentation test of a water sample are shown to the right. What is…

Q: The PureNSafe Company is designing a solar-driven, portable water disinfection system to be used by…

A: Disinfection rate constant for UV light (k)= 7.50 s-1The required reduction in bacterial countc= 3.5…

Q: The analysis of a water sample for MPN calculation in Multiple Tube Fermentation Test is given…

A: Given: Multiple tube fermentation test is given below,

Q: You need to soften water at a 20 MGD potable water treatment facility using lime (Ca(OH)2) and soda…

A: Data Given: Concentration Molecular Weight CO2 6 mg/L 44 g/mol Ca2+ 20…

Q: Small droplets of carbon tetrachloride at 68 °F are formed with a spray nozzle. If the average…

A: Given: Temperature of carbon tetrachloride = 68°F Avg. diameter = 230 µm = 230*10-6 m Required:…

Q: Available chlorine in bleaching powder solution is 0.5mg/ml. To obtain a chlorine dose of 0.1 mg/1…

Q: 1. The solids content of a stream water sample is to be determned. The total solids content is…

A: Mass of empty dish = W1 = 50.326 gm Mass of dish + sample = W2 = 118.400 gm Mass of dish and dried…

Q: Solids analyses were conducted on a soybean processing wastewater. 50 ml of wastewater is used for…

A: Given, Volume of sample (V)=50 mL for total solid analysis Volume of sample (V-)=100 mL for…

Q: Water containing 50 mg/L of monodisperse (uniformly sized) spherical particles of diameter 100 μm…

Q: completely mixed activated sludge reactor treating municipal wastewater, we can assume the following…

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: A treatment plant has been designed to achieve 99 percent inactivation of Giardia Lamblia using…

A: 99% disinfection Present temperature = 20oCNew temperature = 0.5oC

Q: (iii) If HOCI (hypochlorous acid) degrades in water per first-order kinetics with a rate constant of…

Q: A water treatment plant treating 100,000 gallons/day has discovered that their source water…

A: According to given data A water treatment plant treating 100,000 gallons/day has discovered that…

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

A: Calculating the rate constant for the reaction,

Concept explainers

Integrated Solid Waste Management

Integrated Solid Waste Management (ISWM) is a thorough waste suppression, compost, removal and recycling Program. An effective ISWM system considers how to suppress, manage and recycle solid waste in a manner that is most efficiently to protect human health and the surrounding. ISWM system requires evaluation of public wants and demands and then selecting and merging the most effective waste management activities for the proposed demands. The main ISWM activities for solid waste management are Waste prevention, Recycling and Composting, and Combustion and Removal and waste collection in a properly planned, constructed, managed and mitigated landfill areas. Each of these requires careful designing, financing, accumulation, and delivery of activities.

Question

2. Families in a community in a developing country use large, 200.0 L drums to un-treated
surface water. You are designing a device that is designed to dose the volume with a
coagulant, stir to allow flocculation, then add chlorine tablets to disinfect the water. The
water is 25 °C and initially contains 1.0E+09 particles per L. The initial particles can be
assumed to be spherical, 15.0 micrometers in diameter, and with a density of 1.675 g/mL.
a. If the drums have a diameter of 572 mm, how long will it take for the particles to
completely settle without any coagulation or flocculation? (answer in seconds)
You have determined that you can achieve complete destabilization of particles
by achieving an ionic strength of 0.01 M or higher. If you use alum (Al2(SO4)3) as a
coagulating agent, what mass of alum must be added per batch of 200 L? (answer in
grams)
How many joules of energy would be required to stir the drum at a mixing
intensity of 150 s-' for 20 minutes?
If the drum is stirred and flocculation occurs according to the values provided in
part (c), how many initial particles will be in each newly formed aggregate?

Expert Solution

Step 1

Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and specify the other subparts (up to 3) you’d like answered

Trending now

This is a popular solution!

Step by step

Solved in 5 steps

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

Two materials, A and B, are to be separated using two unit operations, 1 and 2. The feed has 10 tons/h A and 4 tons/h B. The split (fraction of material rejected by each operation) is given in Table P5-14. a. Which sequence of operations, (l?2) or (2?1), will yield the greatest recovery of material A? b. What will be the purity of material A using that sequence? c. What will be the efficiency of separation for the entire process train with regard to material A using the Worrell-Stesed equation?
Calculate the R-value for the following materials: a. 4 in. thick brick b. 10 cm thick brick c. 12 in. thick concrete slab d. 20 cm thick concrete slab e. 1 cm thick human fat layer
A hydrometer test has the following result: Gs = 2.65, temperature of water = 26 C, and L = 10.4 cm at 45 minutes after the start of sedimentation (see Figure 2.25). What is the diameter D of the smallest-size particles that have settled beyond the zone of measurement at that time (that is, t = 45 min)? Figure 2.25 ASTM 152H type of hydrometer placed inside the sedimentation cylinder (Courtesy of Khaled Sobhan, Florida Atlantic University, Boca Raton, Florida)
According to Figure 5-20, is ii possible to completely separate one of the four materials from the other three? Explain your answer.
Why is it so difficult to process MSW?