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1. ACRONYMS AND ABBREVIATIONS
CIP — Clean-in-place
FF — Forward flush
NC — Normally closed
NO — Normally open
TDS — Total dissolved solids
2. RO SYSTEM
2.1. OVERVIEW
Ecosoft industrial reverse osmosis systems are used for demineralizing water in industrial,
municipal, commercial applications. Ecosoft RO system can be used to demineralize low to medium
salinity feed water. System components comprise carbon steel skid, industry standard Big Blue 20
prefilters, high pressure pump, array of pressure vessels with membranes, power cabinet, process
controller, and the necessary valves and instruments.
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they do
not play with the appliance.
Reverse osmosis system operation is as follows. First, raw water is fed through sediment prefilters
in order to remove particulates. The water may be dosed with antiscalant or other RO chemicals.
Then, high pressure pump feeds the water into the membrane module or membrane array, in which
feed stream undergoes separation process and splits into permeate and concentrate streams.
Recycle regulating valve throttles flow of concentrate thereby regulating working pressure in the
membrane module. Permeate comes out via permeate outlet and is collected in water tank.
Permeate line is also fitted with pressure switch, to halt the unit if significant pressure builds in
permeate line. Float switch is used to start and stop the system depending on level of water in the
permeate tank.
Part of the concentrate stream is discharged to drain through drain rotameter, and the rest is fed
back to suction end of the high pressure pump through recycle rotameter and piping. Flow rates in
recycle line and drain line are adjustable with regulating valves for setting to operating values.
When operation is interrupted by level or backpressure signal, the system runs a forward flush
(membrane rinse) cycle before switching to standby. It reads temperature and conductivity of
permeate, permeate level, pressure switch statuses, and external inhibition signals.
Depending on your RO system model, it can be additionally equipped with:
• antiscalant/chemical dosing pumps
• additional electric valve for raw water mixing or membrane permeate rinsing (see Annex B)
This manual is the intellectual property of Ecosoft. Copying and reprinting is prohibited. © 2017
INSTRUCTION MANUAL ECOSOFT RO SYSTEM MINI (MO-6500, MO-12000, MO-24000)
PSB — Printed circuit board
P&ID — Piping and instrumentation diagram
RO — Reverse osmosis
LPM — Liter per minute
LPH — Liter per hour
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