A chlorine dose of 0.8 mg/L is added to treat 12 MLD water and to get 0.4 mg/L of residual chlorine. The bleaching powder requirement per month if it contains 40% of chlorine (in tonnes, up to two decimal place) will be_________.Correct answer is '0.72'. Can you explain this answer?

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A chlorine dose of 0.8 mg/L is added to treat 12 MLD water and to get 0.4 mg/L of residual chlorine. The bleaching powder requirement per month if it contains 40% of chlorine (in tonnes, up to two decimal place) will be_________.

Correct answer is '0.72'. Can you explain this answer?

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A chlorine dose of 0.8 mg/L is added to treat 12 MLD water and to get ...

Bleaching powder dose

= 2mg/L

Bleaching powder requirement (kg/day)

= Q × Bleaching powder dose

= 12× 10⁶L/day × 2 × 10^-6 kg/L

= 24 kg/day.

Monthly Requirement = 24 × 30

= 720 kg/month

= 0.720 tonne/month

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A chlorine dose of 0.8 mg/L is added to treat 12 MLD water and to get ...

Given data:

Chlorine dose = 0.8 mg/L
Water volume = 12 MLD
Residual chlorine = 0.4 mg/L
Chlorine content in bleaching powder = 40%

Calculating the amount of chlorine required:

To calculate the amount of chlorine required, we can use the formula:

Chlorine dose × Water volume = Residual chlorine × Water volume + Chlorine demand × Water volume

Where:
Chlorine dose = 0.8 mg/L
Water volume = 12 MLD
Residual chlorine = 0.4 mg/L
Chlorine demand = ?

Substituting the given values into the equation, we get:

0.8 mg/L × 12 MLD = 0.4 mg/L × 12 MLD + Chlorine demand × 12 MLD

Calculating the chlorine demand:

Rearranging the equation to solve for chlorine demand:

Chlorine demand × 12 MLD = (0.8 mg/L × 12 MLD) - (0.4 mg/L × 12 MLD)
Chlorine demand × 12 MLD = 9.6 mg - 4.8 mg
Chlorine demand × 12 MLD = 4.8 mg

Converting the chlorine demand to tonnes:

Since the given value for chlorine content in bleaching powder is in percentage, we need to convert the chlorine demand from mg to tonnes.

First, we convert milligrams to grams by dividing by 1000:
Chlorine demand = 4.8 mg = 4.8 g

Then, we convert grams to kilograms by dividing by 1000:
Chlorine demand = 4.8 g = 0.0048 kg

Finally, we convert kilograms to tonnes by dividing by 1000:
Chlorine demand = 0.0048 kg = 0.0048 tonnes

Calculating the bleaching powder requirement:

To calculate the bleaching powder requirement, we need to find the amount of bleaching powder required to provide the chlorine demand.

The chlorine content in bleaching powder is given as 40%. This means that 40% of the weight of bleaching powder is chlorine.

So, the amount of bleaching powder required can be calculated using the equation:

Bleaching powder requirement = Chlorine demand / Chlorine content in bleaching powder

Substituting the values, we get:

Bleaching powder requirement = 0.0048 tonnes / 0.4
Bleaching powder requirement = 0.012 tonnes

Rounding the answer to two decimal places, the bleaching powder requirement per month is 0.72 tonnes.

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Community Answer

A chlorine dose of 0.8 mg/L is added to treat 12 MLD water and to get ...

Cl2 dose= 0.8mg/l

q=12MLD =12*10^6*30 L/MONTH

40% cl2 present in bp

Bleaching powder
= Cl2 dose / ofcl2% bleaching powder

bp dose = 0.8/0.4=2mg/lit

total bp dose 2*12*30*10^6
=0.72 ton/month

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A chlorine dose of 0.8 mg/L is added to treat 12 MLD water and to get 0.4 mg/L of residual chlorine. The bleaching powder requirement per month if it contains 40% of chlorine (in tonnes, up to two decimal place) will be_________.Correct answer is '0.72'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A chlorine dose of 0.8 mg/L is added to treat 12 MLD water and to get 0.4 mg/L of residual chlorine. The bleaching powder requirement per month if it contains 40% of chlorine (in tonnes, up to two decimal place) will be_________.Correct answer is '0.72'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A chlorine dose of 0.8 mg/L is added to treat 12 MLD water and to get 0.4 mg/L of residual chlorine. The bleaching powder requirement per month if it contains 40% of chlorine (in tonnes, up to two decimal place) will be_________.Correct answer is '0.72'. Can you explain this answer?.

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