How is polyaluminium chloride dosed?

This was dramatically improved, to over 90%, by dosing polyaluminium chloride. PAC is directly and continuously dosed from the containers in which it is delivered at a rate of about 0.1ml/m 3 of the circulation flow. (It is very important that it is not diluted with water as it will form a gel.)

What is the coagulation removal rate of polyaluminium chloride (PAC)?

Without coagulation removal rates in a single pass of a medium-rate filter were about 50%. This was dramatically improved, to over 90%, by dosing polyaluminium chloride. PAC is directly and continuously dosed from the containers in which it is delivered at a rate of about 0.1ml/m 3 of the circulation flow.

What is a normal PAC dosing rate?

Different Grades of PAC: PWTAG recommends a normal dosing rate of 0.1ml/m3 of the total flow rate, regardless of the grade of PAC used. While there are various PAC grades available with different aluminium concentrations (ranging from 9.5% to 18%), aluminium content is not the sole factor to consider when selecting a grade.

What is a normal dosing rate for pwtag PAC?

PWTAG recommends a normal dosing rate of 0.1ml/m 3 of the total flow rate, which it has also described as 0.005ml/m 3 as aluminium. There are now a number of different grades of PAC with aluminium concentrations between 9.5% and 18%. The concentration of aluminium is not the only consideration when selecting a grade of PAC to use.

What is the PAC dosing rate for a pool?

This can typically be achieved within the space above the filter media. Dosing Calculation: For pools with a capacity of 450m3 (100,000 gallons) and a turnover period of 2 hours, the circulation rate is 225m3 per hour. Therefore, the PAC dosing rate for this pool would be 22.5ml per hour.

What is the PAC dosing rate for a 450m3 pool?

Dosing Calculation: For pools with a capacity of 450m3 (100,000 gallons) and a turnover period of 2 hours, the circulation rate is 225m3 per hour. Therefore, the PAC dosing rate for this pool would be 22.5ml per hour. Although a small quantity, accurate and continuous dosing can be challenging.