Question - It was decided to construct a fabric filter, using bags of 0.45 m diameter and 7.5 m long, for removing industrial stack gas containing particulates. The expected rate of airflow into the filter is 10m3/s. If the filtering velocity is 2.0 m/min, the minimum number of bags (rounded to nearest higher integer) required for continuous cleaning operation is..

Question - It was decided to construct a fabric filter, using bags of 0.45 m diameter and 7.5 m long, for removing industrial stack gas containing particulates. The expected rate of airflow into the filter is 10m3/s. If the filtering velocity is 2.0 m/min, the minimum number of bags (rounded to nearest higher integer) required for continuous cleaning operation is..

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter5: Separation Processes

Section: Chapter Questions

Problem 5.22P

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It was decided to construct a fabric filter, using bags of 0.45 m diameter and 7.5 m long, for removing industrial stack gas containing particulates. The expected rate of airflow into the filter is 10m3/ s. If the filtering velocity is 2.0 m/min, the minimum number of bags (rounded to nearest higher integer) required for continuous cleaning operation is
A filter press with an effective filtering area between 350m^2 operates constantly maintaining a pressure difference of 35000Pa. The viscosity of the fluid (water with milk solids) was measured at 0.002Kg/Ms and the following data is obtained: (Data image) Considering that the density of milk solids on average is 200Kg/m^2, calculate filtration velocity at t=120m . I need help with this one plz
A filter press with an effective filtering area between 350m^2 operates constantly maintaining a pressure difference of 35000Pa. The viscosity of the fluid (water with milk solids) was measured at 0.002Kg/Ms and the following data is obtained: (Data image) Considering that the density of milk solids on average is 200Kg/m^2, calculate filtration velocity at t=120m
In rapid sand filters, the flow rate capacity is 0.3 m3/s and the filtration rate is 100 L/m2.min. When one filter is stopped the filtration rate become 150 L/m2.min. If each filter is backwashed for 5 mins and backwash rate is 60 m3/m2.hr. Find the number of filters, area of each filter, percentage of backwash water to filtered water if the filter is stopped 30 min/day. Also, find the diameter of the pipe which transport the backwash water if the designed velocity is 3m/s.
5. Membrane filtration is increasingly being used in small water treatment facilities instead of gravity filtration. Backwash is an essential phase of operating a filter and applies to both the gravity filters and the membrane filters. Using a typical plot of "run time versus headloss buildup" provide a graphical comparison between the backwash cycle in a dual media gravity filter and that of a membrane filter. Use the same scale in describing the run time 20 ts)..
Design a trickling filter system for BOD removal without the nitrification requirement, to treat municipal wastewater with an average flow of 200 m3/d (Qin) and influent BOD of 200 mg/L and Ammonium (NH4-N) of 42 mg/L. Make appropriate assumptions and use the design indicators for plastic media filters as given below. What are the possible effects of the peak flow of 1.5 times occurring once in a month? Volumetric loading rate (Bv)= 0.5 kgBOD/m3.d Volumetric loading rate for NH4-N (Bv, NH4-N)= 0.2 kgNH4-N/m3.d Hydraulic loading rate (qh= Q/AR)= 1.2 m/h Recirculation ratio (Qr/Qin) = 0.5
Q# 02: H1 TH H2 Toe filter H1= 12m and H2 2m Calculate head loss and head available at red, blue, green, purple and orange points.
(c) A filter has a head loss of 0.30 m when clean and 1.30 m after 24 hours of filtration at a rate of 1.5l/s. . Estimate the following if the filtration rate is changed to 2 l/s i. head loss immediately after backwash ii. 10 hours later
A RSF is to be designed to treat 4MLD of water, 4% of filtered water is required for washing of the filter everyday for half hour. If the ROF is 4000lt/hr/m², then the length of filter bed will be · (Assume L:B = 2:1). sebuls
Total suspended particulate matter (TSP) concentration in ambient air is to be measured using a high volume sampler. The filter used for this purpose had an initial dry weight of 9.787 gm. The filter was mounted in the sampler and the initial air flow rate through the filter was set at 1.5 m³/min. Sampling continued for24 hours. The airflow after 24 hours was measured to be 1.4 m³/min. The dry weight of the filter paper after 24 hours sampling was 10.283 gm. Assuming a linear decline in the air flow rate during sampling, what is the 24 hours average TSP concentration in the ambient air?
7. The emissions from a stack were measured by collecting a sample on a filter. The sampler was operated for 15 minutes, had an inlet area of 12.5 cm2, an inlet velocity of 20 m/s, and collected 0.23 grams of PM. The stack gas had a temperature of 340 K, pressure of 1.018 atm, and volumetric flow of 245 scm/sec. Determine the PM concentration [ug/dscm], and the total rate of emissions [kg/day]. dscm: dry standard cubic meter
Total suspended particulate matter concentration in ambient air is to be measured using a high- volume sampler. The filter used for this purpose had an initial dry weight of 9.787 g. The filter was mounted in the sampler and the initial air flow rate through the filter was set at 1.5 m³/min. Sampling continued for 24 hours. The airflow after 24 hours was measured to be 1.4 m³/min. The dry weight of the filter paper after 24 hours sampling was 10.283 g. Assuming a linear decline in the air flow rate during sampling, what is the 24 hour average TSP concentration in the ambient air(in 10-6 g/m³?