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Control Limit Parameter for testing for various Systems

SYSTEM

PARAMETERS

Closed Loop System

Cooling Tower

Hard Water Steam Boiler

Soft Water Steam Boiler

Test

Limit

Test

Limit

Test

Limit

Test

Limit

Total Hardness (Mg2+ & Ca2+)

4

#

4

#

4

#

4

#

pH ( -log[H+] )

4

7.5 9.5

4

7.5 9.5

P Alkalinity

4

200 - 400

4

200 - 500

4

425 - 850

4

425 850

Total Alkalinity

4

< 400

4

< 500

4

< 850

4

< 850

Bi-Carbonate Alkalinity (HCO3=)

CALC

CALC

CALC

CALC

Carbonate Alkalinity (CO3=)

CALC

CALC

CALC

CALC

Hydroxide Alkalinity (OH-)

CALC

CALC

CALC

CALC

TDS (Total Dissolved Solids)

4

< 1500

4

< 1500

4

2000 - 3000

4

2000 3000

Phosphonates (Organic)

4

#

Chloride (Cl-)

4

#

4

#

Sulphite (SO3=)

4

20 - 60

4

20 60

Condensate pH

4

7.5 8.5

4

7.5 8.5

Phosphate (PO43-)

4

Softener Hardness

4

< 2

Silica (Si)

4

< 30

4

< 30

4

< 25

Iron (Fe)

4

< 0.1

4

< 0.1

4

< 0.2

4

< 0.2

4 : Testing of Control Parameter should be included for a treated system

# : Value are to be compared with treatment control parameters.

CALC : Calculated value.

 

Bi-Carbonate Alkalinity, Carbonate Alkalinity & Hydroxide Alkalinity Calculate from P Alkalinity & Total Alkalinity

 

Last Updated :: Wednesday, January 12, 2011