How Much Chemical Solution Is Needed for Proper Dosing in Water Treatment?

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SUMMARY

The discussion centers on calculating the appropriate volume of a 10% chemical solution required to achieve a dosing concentration of 5 mg/L in a water treatment pilot plant with a flow rate of 20 L/h. To determine the necessary dosage, one must convert the concentration of the solution into mg/L, considering that a 10% solution equates to 100,000 mg/L. Therefore, to achieve a target of 5 mg/L, the required volume of the 10% solution is 0.005 L (or 5 mL) per liter of water treated. This calculation is essential for selecting the correct dosing pump for the application.

PREREQUISITES
  • Understanding of chemical concentration units (mg/L, % solution)
  • Basic knowledge of water treatment processes
  • Familiarity with flow rate calculations
  • Experience with dosing pump specifications
NEXT STEPS
  • Research chemical dosing calculations for water treatment
  • Learn about different types of dosing pumps and their specifications
  • Explore methods for measuring chemical concentrations in solutions
  • Investigate the impact of chemical dosing on water quality
USEFUL FOR

Water treatment engineers, chemical process operators, and anyone involved in the design and operation of water treatment facilities will benefit from this discussion.

Bashir2008
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Hello everybody..

I have aquestion and hope to get help..please bear with me and try to finish reading my question..

Thank u very much for your time.

My question is

I have a pilot plant filter.. and i need to add some chemicals to the raw water before entering the filter..say for instance the water flow rate is around 20L/h

the concentration of the chmical solution is %10.. and i need to add (dose) 5mg/L...which means 5mg of the chemials to 1L of water (flows in pipe before the filter )..
My question is how much (liter or milliters ) of the solution (chemicals) should i dose it to the water to give me the 5mg/l ?
I need to solve this problem in order to get the specification of the right dosing pump that i need to buy..
So please try to help me out with this.
Thank u very much
 
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I'm not an expert, but I'm having trouble understanding what you mean by a %10 solution. Wouldn't you have to express that concentration in terms of mg/L? Or could you express the mg/L that a 100% solution would have?
 

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