DI Feed Savings

The Cost of Operations section is a tool to help project the costs associated with running an RO system. We have defaulted in some common values, but please change any of the values shown to give a more accurate calculation of operating costs for your proposed RO system in your area of the world.

Operational Parameters

Frequency:

RO machine:

Recovery percentage:

RO Pump Efficiency:

Reuse concentrate:

Number of operating days per year:

days

Number of operating hours per day:

hours

Membrane element life expectancy:

years

Filter life expectancy:

days

Cleanings per year:

Water Cost

Water cost is measured in dollars per 1,000 gallons. You may use the conversion calculators to the right to convert from dollars per cubic foot or dollars per cubic meter.
$ per 1,000 gallons

$ per cubic foot

$ per cubic meter

Sewage Cost

Sewage cost is measured in dollars per 1,000 gallons. You may use the conversion calculators to the right to convert from dollars per cubic foot or dollars per cubic meter.
$ per 1,000 gallons

$ per cubic foot

$ per cubic meter

Other Cost

Electricity cost: $

per kWh

Membrane element cost: $

per membrane element

Typical prices are $550 for 8" and $200 for 4" membrane elements

Chemical Usage and Costs

Cleaning chemical cost: $

per pound

Feed pH adjustment, chemical cost: $

per pound

pH adjustment, feed:

ppm

Permeate pH adjustment, chem. cost: $

per pound

pH adjustment, permeate:

ppm

Anti-scalant chemical cost: $

per gallon

Anti-scalant:

ppm

Sodium bisulfite chemical cost: $

per pound

Sodium bisulfite:

ppm

Labor

Labor cost: $

per hour

Labor minutes per day:

minutes

Info

DI Feed Savings