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..

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Collection Systems

The collection systems form a part of sanitary engineering, which is a sub-branch of civil engineering. It is also known as public health engineering and wastewater engineering. It is a methodology followed to remove and properly dispose of human waste, along with creating systems to provide safe and clean usable water. These measures ensure a hygienic and disease-free community. Sanitary engineering, apart from building sewer disposal units, is also involved in plumbing, fire protection, hydraulics, life safety, environmental protection, information technology, microbiology, pathology, and so on.

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Q avg = 0.181 m^3/s
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EXAMPLE : A filter unit has surface area of 4.88 m wide and 9.144 m long. After filtering 10,900 m3 for 50 h, the filter is backwashed at a rate of 0.65 m/min for 15 min. Find: (a) the average filtration rate, (b) the quantity of washwater, (c) percent of washwater
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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?
An ESP was designed to treat 5500 m3/mm of flue gas from a coal combustion unit and achieve a 98,5% PM removal efficiency. A certain drift velocity was assumed. The unit was built with exactly the collect ion. area called for in the design, but by the time the unit was started up, the actual flow rate had increased to 5900 m3/min, and the actual efficiency was really 98,5%,. Was the actual drift velocity the same as had been assumed? Prove your answer mathematically.
Question- A water treatment plant of capacity, 1 m³/s has filter boxes of dimensions 6 m × 10 m. Loading rate to the filters is 120 m³/day/m². When two of the filters are out of service for back washing, the loading rate (in m³/day/m²) is
Total Suspended Particulate (TSP) 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 h. The airflow after 24h was measured to be 1.4 m3/min. The dry weight of the filter paper after 24 h sampling was 10.283 g. Assuming a linear decline in the airflow rate during sampling, what is the 24 h average TSP concentration in the ambient air?