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
Engineering Mechanics
Strength of Materials Or Solid Mechanics
Structural Analysis
Construction Material and Management
Reinforced Cement Concrete
Steel Structures
Geotechnical Engineering
Fluid Mechanics and Hydraulic Machines
Hydrology
Irrigation
Geomatics Engineering Or Surveying
Environmental Engineering
Transportation Engineering
Engineering Mathematics
General Aptitude