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Recent questions tagged effluent-discharge-standards
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GATE2020-CE-1-25
A river has a flow of $1000$ million litres per day (MLD), $BOD_5$ of $5\:mg/litre$ and Dissolved Oxygen (DO) level of $8\:mg/litre$ before receiving the wastewater discharge at a location. For the existing environmental conditions, the saturation ... complete mixing of wastewater and river water, the immediate DO deficit (in $mg/litre$ round off to two decimal places), is ______.
A river has a flow of $1000$ million litres per day (MLD), $BOD_5$ of $5\:mg/litre$ and Dissolved Oxygen (DO) level of $8\:mg/litre$ before receiving the wastewater disch...
go_editor
5.3k
points
go_editor
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Feb 27, 2020
Water and Waste Water Quality and Treatment
gate2020-ce-1
numerical-answers
effluent-discharge-standards
biochemical-oxygen-demand
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0
votes
0
answers
2
GATE2020 CE-2-16
The relationship between oxygen consumption and equivalent biodegradable organic removal (i.e.,BOD) in a closed container with respect to time is shown in the figure Assume that the rate of oxygen consumption is directly proportional to the amount of degradable organic matter and is expressed as ... is $BOD_5 = L_5$ $BOD_t = L_0-L_t$ $L_0 = L_te^{-kt}$ $L_t = L_0(1-e^{-kt})$
The relationship between oxygen consumption and equivalent biodegradable organic removal (i.e.,BOD) in a closed container with respect to time is shown in the figureAssum...
go_editor
5.3k
points
go_editor
asked
Feb 13, 2020
Water and Waste Water Quality and Treatment
gate2020-ce-2
environmental-engineering
effluent-discharge-standards
biological-oxygen-demand
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–
0
votes
0
answers
3
GATE2019 CE-2: 42
Consider the reactor shown in the figure. The flow rate through the reactor is $Q \: m^3/h$. The concentrations (in $mg/L$) of a compound in the influent and effluent are $C_0$ and $C$, respectively. The compound is degraded in the reactor following the first order ... $L_{\text{CMFR}}/L_{\text{PFR}}$ (round off to $2$ decimal places) is ____________
Consider the reactor shown in the figure. The flow rate through the reactor is $Q \: m^3/h$. The concentrations (in $mg/L$) of a compound in the influent and effluent are...
Arjun
13.0k
points
Arjun
asked
Feb 12, 2019
Water and Waste Water Quality and Treatment
gate2019-ce-2
numerical-answers
environmental-engineering
water-and-waste-water
effluent-discharge-standards
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–
0
votes
0
answers
4
GATE2016-1-50
Effluent from an industry ‘A’ has a pH of $4.2$. The effluent from another industry ‘B’ has double the hydroxyl (OH) ion concentration than the effluent from industry ‘A’. pH of effluent from the industry ‘B’ will be ______
Effluent from an industry ‘A’ has a pH of $4.2$. The effluent from another industry ‘B’ has double the hydroxyl (OH) ion concentration than the effluent from indu...
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 27, 2018
Water and Waste Water Quality and Treatment
gate2016-ce-1
numerical-answers
water-and-waste-water-quality-and-treatment
environmental-engineering
effluent-discharge-standards
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–
0
votes
0
answers
5
GATE2014-2-48
An effluent at a flow rate of $2670 \: m^3/d$ from a sewage treatment plant is to be disinfected. The laboratory data of disinfection studies with a chlorine dosage of $15$ mg/l yield the model $N_t=N_oe^{-0.145t}$ where $N_t=$ number of micro-organisms surviving ... (at $t=0$). The volume of disinfection unit (in $m^3$) required to achieve a $98\%$ kill micro-organisms is __________
An effluent at a flow rate of $2670 \: m^3/d$ from a sewage treatment plant is to be disinfected. The laboratory data of disinfection studies with a chlorine dosage of $1...
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 25, 2018
Water and Waste Water Quality and Treatment
gate2014-ce-2
numerical-answers
water-and-waste-water-quality-and-treatment
environmental-engineering
effluent-discharge-standards
sewage-treatment
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