![]() Then divide this number into the capacity of the softeners, in this case, approximately 2 million to 2.7 million grains per softener vessel. Once you know the hardness of the raw water, you can calculate the approximate capacity by converting the hardness (expressed as mg/L or ppm, as CaCO3) to grains per gallon by dividing by 17.1. The frequency of regeneration will depend upon the hardness of the raw water. When each softener vessel regenerates, it will consume approximately 500 - 1,000 pounds of salt and produce about 10,000 gallons of liquid waste. ![]() ![]() Typically, raw (hard) water is blended with softened water to produce an effluent containing about 85 mg/L of total hardness (in municipal drinking water systems). If hardwater blending is used, the loading will be even less in both cases. When one unit drops off line to regenerate, the loading through the other two units is 10.5 gpm/sf for approximately 1-1/2 hours. Using three 78" diameter by 72" side shell pressure vessels loaded with 100 cubic feet of cation resin to a depth of 36" will allow you to operate at a combined flow rate of 1 MGD based upon a hydraulic loading capacity of 7 gpm/sf. But here is some information that might be helpful to you. Not knowing the hardness and TDS of the raw water, leaves a lot to chance.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |