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Plants aeration period:
Problem:
What is the plant's aeration period?
Solution
The plant's aeration period is the number of hours that the wastewater is aerated during the activated sludge process. These equivalents the hydraulic detention time of the biological reactor
θ= V/Q = 5, 000, 000 l/33.75 × 106 l / day = 0.15 day = 3.6 hours.
Define the Ultrasonic Thickness Measurement? Ultrasonic thickness meters measure the thickness of steel by passing an ultrasonic wave through the member. Thickness measurements
Example : Line AB was drawn with a magnetic bearing of 136° 45′ while the magnetic declination was 2° 30′ east In an old map. If magnetic declination is 3° 30′ west to what m
Q. Air chamber vs. surge tank in pressurized pipelines? Air chambers and surge tanks are generally installed in water main to ease the stress on the system when valves or pumps
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Classification of Bricks Based on their Quality The bricks used in construction are classified as following: First class bricks Second class bricks Third class bric
1 advantages and disadvantages of rise and fall methodes
what is the theory of roof trusses practical?
Define Seal wear test of shock transmission unit? Seal wear test: Seal prevents the leakage of silicon putty in the cylinder. The test is conducted for 30000 cycles assuming th
DOES A GAUGE BOX OF THE SIZE LIKE 50,40,30 MM EXISTS?
explain the term
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