1
GATE CE 2024 Set 1
Numerical
+2
-0
Activated carbon is used to remove a pollutant from wastewater in a mixed batch reactor, which follows first-order reaction kinetics.
At a reaction rate of 0.38 /day, the time (in days) required to remove the pollutant by 95% is _______________ (rounded off to 1 decimal place).
Your input ____
2
GATE CE 2024 Set 1
Numerical
+2
-0
A water treatment plant treats 25 MLD water with a natural alkalinity of 4.0 mg/L (as CaCO3). It is estimated that, during the coagulation of this water, 450 kg/day of calcium bicarbonate (Ca(HCO3)2) is required based on the alum dosage.
Consider the atomic weights as: Ca-40, H-1, C-12, O-16.
The quantity of pure quick lime, CaO (in kg) required for this process per day is _______ (rounded off to 2 decimal places).
Your input ____
3
GATE CE 2023 Set 2
MCQ (More than One Correct Answer)
+2
-0
In the context of water and wastewater treatments, the correct statements are:
4
GATE CE 2017 Set 2
Numerical
+2
-0
The analysis of a water sample produces the following results:
The total hardness (in mg/L as $${\mathrm{CaCO}}_3$$) of the water sample is ______.
The total hardness (in mg/L as $${\mathrm{CaCO}}_3$$) of the water sample is ______.Your input ____
GATE CE Subjects
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Engineering Mechanics
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Steel Structures
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Measurement of Area, Volume and Theory of Errors and Survey Adjustment Curves Theodolites and Plane Table Surveying Levelling Traversing Basics of GIS, GPS and Remote Sensing Field Astronomy and Photogrammetric Surveying Linear Measurements and Chain Survey Angular Measurements and Compass Survey Basic Concepts
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Origin of Soils Definitions and Properties of Soils Classification of Soils and Clay Mineralogy Effective Stress and Permeability Seepage Analysis Compaction of Soil Compressibility and Consolidation Shear Strength of Soil Stress Distribution of Soil Retaining Wall and Earth Pressure Stability of Slopes Shallow Foundation Pile Foundation Soil Stabilization