4 replies to this topic

[Bashir]

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 by weight.. 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

[Zauberberg]

Bashir,

Calculate the net rate of pure chemical (mg/h), based on given water flow and required concentration of chemical. Since it is highly diluted system, you can neglect the presence of water in the chemical solution - this will give you the solution flowrate which is ten times higher that the pure chemical flow.

Pure chemical flow, mg/h = (Water volumetric flow) x (5 mg/L)
Chemical solution flow = 10 x (Pure chemical flow)

I hope this wasn't too difficult.

[Andree]

(very) approx. 0.1 l/h

[Andree]

(very) approx. 0.1 l/h

assuming that %10 means 0.1%

[Bashir]

Hi friends

First of all thank for replying.. but i really confused.. i still do not understand it.

How can ignore the water in solution ( the stock solution is 10% concentration) and i need to dose 5mg/l of water flow through the system..So much exactly i need to dose from this solution to the raw water flow ? in other words how mls (mililiter per hr) ? Please try to expalin with some details..

Thank u very much