Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
SAMPLE PROBLEM 4 | A settling tank has 2m³/min inflow and 2100mg/L solids concentration. The effluent from I this settling tank goes to sand filters. The concentration of sludge coming out of the bottom of the settling tank is 18000mg/L & the flow to the filters is 1.8 m³/ min. a) What is the underflow flowrate? b) What is the solids concentration in the effluent (flow to the filters)? c) How large must the sand filters be (m²) if the filter loading is 4 gal/ ft².min? Given: b. Component Material Balance around settling tank 2m³/min VINCIN = VUFCUF + VorCoF J(2m³/min) (2100mg/L) 21000rbg/L solids, 1.8m³/min. (0.2m³/min)(18000mg/L) + (1.8m/min)(Cor) Cor = 333.3333 mg/L solids Skudge Req'd: Vur, Cor, Armer c. Now we focus on the filter filter inflow filter surface area Soln: filter loading = For convenience, let's denote underflow as UF and overflow as OF. Since the water inflow in the rapid sand is the overflow of the settling tank, filter inflow is our CoF. a. Total Material Balance around settling tank VN = Vor + Vur gal 1m 2m/min = 1.8 m/min+ Vur ft-.min \7.481 gal) filter area Vur = 0.2000 m³/min AFILTER = 11.0420 m² Redo Sample Problem 4 if the water inflow to the sedimentation tank is 2.1m³/min and the sludge concentration coming out at the underflow is 12000mg/L. consider also the filter loading rate of the sand filter to be 2.1 gal/d.ft².

SAMPLE PROBLEM 4 | A settling tank has 2m³/min inflow and 2100mg/L solids concentration. The effluent from I this settling tank goes to sand filters. The concentration of sludge coming out of the bottom of the settling tank is 18000mg/L & the flow to the filters is 1.8 m³/ min. a) What is the underflow flowrate? b) What is the solids concentration in the effluent (flow to the filters)? c) How large must the sand filters be (m²) if the filter loading is 4 gal/ ft².min? Given: b. Component Material Balance around settling tank 2m³/min VINCIN = VUFCUF + VorCoF J(2m³/min) (2100mg/L) 21000rbg/L solids, 1.8m³/min. (0.2m³/min)(18000mg/L) + (1.8m/min)(Cor) Cor = 333.3333 mg/L solids Skudge Req'd: Vur, Cor, Armer c. Now we focus on the filter filter inflow filter surface area Soln: filter loading = For convenience, let's denote underflow as UF and overflow as OF. Since the water inflow in the rapid sand is the overflow of the settling tank, filter inflow is our CoF. a. Total Material Balance around settling tank VN = Vor + Vur gal 1m 2m/min = 1.8 m/min+ Vur ft-.min \7.481 gal) filter area Vur = 0.2000 m³/min AFILTER = 11.0420 m² Redo Sample Problem 4 if the water inflow to the sedimentation tank is 2.1m³/min and the sludge concentration coming out at the underflow is 12000mg/L. consider also the filter loading rate of the sand filter to be 2.1 gal/d.ft².

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
See similar textbooks
icon
Related questions
Question
100%

kindly help me with this problem   Show your complete solution thank you!

SAMPLE PROBLEM 4 | A settling tank has 2m³/min inflow and 2100mg/L solids concentration. The effluent from I this settling tank goes to sand filters. The concentration of sludge coming out of the bottom of the settling tank is 18000mg/L & the flow to the filters is 1.8 m/ min. a) What is the underflow flowrate? b) What is the solids concentration in the effluent (flow to the filters)? c) How large must the sand filters be (m²) if the filter loading is 4 gal/ ft².min? Given: b. Component Material Balance around settling tank 2m/min VINCIN = VUFCUF + VOFCOF |(2m³/min) (2100mg/L) 21000rbg/L solids, 1.8m/min. (0.2m³/min)(18000mg/L) + (1.8m/min)(CoF) CoF = 333.3333 mg/L solids Sludge Req'd: Vur, CoF, Ater c. Now we focus on the filter filter inflow filter surface area Since the water inflow in the rapid sand is the overflow of the settling tank, filter Sol'n: For convenience, let's denote underflow as UF and overflow as OF. filter loading = a. Total Material Balance around settling tank inflow is our CoF. VIN = VOr + VUF gal 4 1ft³ 1.8 1m 2m/min = 1.8 m/min+ VuF *Jt²2.min (7481 gal) filter area VUF = 0.2000 m³/min AFILTER = 11.0420 m² Redo Sample Problem 4 if the water inflow to the sedimentation tank is 2.1m/min and the sludge concentration coming out at the underflow is 12000mg/L. consider also the filter loading rate of the sand filter to be 2.1 gal/d.ft?.
Transcribed Image Text:SAMPLE PROBLEM 4 | A settling tank has 2m³/min inflow and 2100mg/L solids concentration. The effluent from I this settling tank goes to sand filters. The concentration of sludge coming out of the bottom of the settling tank is 18000mg/L & the flow to the filters is 1.8 m/ min. a) What is the underflow flowrate? b) What is the solids concentration in the effluent (flow to the filters)? c) How large must the sand filters be (m²) if the filter loading is 4 gal/ ft².min? Given: b. Component Material Balance around settling tank 2m/min VINCIN = VUFCUF + VOFCOF |(2m³/min) (2100mg/L) 21000rbg/L solids, 1.8m/min. (0.2m³/min)(18000mg/L) + (1.8m/min)(CoF) CoF = 333.3333 mg/L solids Sludge Req'd: Vur, CoF, Ater c. Now we focus on the filter filter inflow filter surface area Since the water inflow in the rapid sand is the overflow of the settling tank, filter Sol'n: For convenience, let's denote underflow as UF and overflow as OF. filter loading = a. Total Material Balance around settling tank inflow is our CoF. VIN = VOr + VUF gal 4 1ft³ 1.8 1m 2m/min = 1.8 m/min+ VuF *Jt²2.min (7481 gal) filter area VUF = 0.2000 m³/min AFILTER = 11.0420 m² Redo Sample Problem 4 if the water inflow to the sedimentation tank is 2.1m/min and the sludge concentration coming out at the underflow is 12000mg/L. consider also the filter loading rate of the sand filter to be 2.1 gal/d.ft?.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The
SEE MORE TEXTBOOKS