Boiler Water Hardness

First knowing the water source is important whether it is from ponds rivers ground wells or city water.

Boiler water hardness.

Therefore good internal boiler water treatment programs are necessary. With adequate alkalinity addition of sodium phosphate produces an insoluble precipitate of hydroxyapatite with magnesium hydroxide and magnesium and calcium silicates. Oil causes foaming or combines with suspended solids to. Water treatment recommendations vary depending on the operating pressure of the boiler the application steam or hot water and other parameters.

Feedwater hardness usually ranges from 0 01 to 2 0 ppm but even water of this purity does not provide deposit free operation. Hardness hard water does not foam. The minerals in the hard water can lead to scale building up within your boiler. Boiler water quality boiler chemicals are used to ensure proper boiler water quality in boilers.

However boiler water is deliberately softened to prevent scale formation and this gives it a propensity to foam. The below table is the total dissolved solids or tds alkalinity and hardness versus boiler pressure. Water hardness levels are typically checked manually through the use of chemical reagents but such measurements are time consuming and can result in incorrect readings. Total silica 150 ppm maximum.

Total alkalinity 600 ppm maximum. Most boiler systems have sodium zeolite softened or demineralized makeup water. Colormetry solves all these problems by offering automated reagent injection mixing and evaluation integrated into the boiler control system. While hard water may not be harmful to you directly it can cause a number of problems with your plumbing system and appliances using water including your boiler.

General guidelines to prevent corrosion and scaling in low pressure boilers are as follows. Every effort should be made to prevent oils from getting into the boiler water. Total hardness should not exceed 50 ppm. The hardness must be removed in the makeup water to the return system.

Boiler sludge concentrations created by coagulation treatment may be avoided by sodium phosphate treatment when water hardness is less than 60 mg l. Total hardness 1 ppm maximum. The nalco water hardness response program incorporates a state of the art hardness analyzer that monitors the process stream. In boilers the hardness of the water can cause the formation of scale and sludge or mud.

Colloidal substances contamination of boiler water with a colloid in suspension for example. You may notice that you hear a. Colloidal particles are less than 0 000 1 mm in diameter and.