SYSTEM OUTLINE
This specification covers the requirements for the design and supply of 50 m3/h reverse osmosis for PT. Surya Cipta Perkasa.
The plant consists mainly of
- Multimedia Filter
- Activated Carbon Filter
- Reverse osmosis system complete with cleaning facilities
- Storage Water Tanks
Feed water from the river flow trough the multimedia filter and activated carbon filter and then the water is injected with chemical treatment as follow :
| No | Chemical | Function |
| 1 | NaOH | To adjust the pH |
| 2 | Hypochlorite | To kill microorganism and hence protect the RO membrane from biological fouling, also act to oxidize solube iron to protect RO membrane from iron fouling. |
| 3 | Bisulfite | To act as an chlorine scavenger that will remove any oxidants in the water, to protect RO membranes against any attack by the oxidants |
| 4 | Anti Scalant | To hinder salt crystallization in RO concentrate stream and thus prevent scaling on RO membrane |
The conditioning water is boosted and fed to the reverse osmosis modules. Under high pressure, the water is forced through the RO membranes. Salts are not permeable and are thus retained on the membrane surface. As such, the water is separated into two streams. One stream will be the water passing through the RO membranes, this stream contains small amount of salts and is termed as the permeate (or product water). The other stream contains the salts and is termed as the concentrate (or reject water)
RO cleaning unit is incorporated in the package. Even though the pretreatment is well designed and incorporated, the RO membrane is still subject to fouling and scaling.
FEED WATER CONDITION
Flow 100 m3/h
Source River
FEED WATER QUALITY
| PARAMETER | UNIT | RESULT |
| Treated Water | ||
| TDS | mg/L Solid | 270 |
| SDI | < 3 | |
| pH | 7.06 |
PERMEATE WATER CHARACTERISTICS
Flow 50 m3/h
PERMEATE WATER QUALITY
TDS mg/L Solid Max 15
A. PRETREATMENT EQUIPMENT
RO BOOSTER/FEED PUMP
Quantity 2 sets (1 duty, 1 stand by)
Complete with Pipes, Fittings, and Valves
Type Horizontal end suction
Make Grundfos or equal
Flowrate 100 m³/hr
Discharge head 20 m
Motor 11 kW, 380V/3ph/50Hz
AIR BLOWER
Quantity 1 set
Complete with Pipes, Fittings, and Valves
Make Showfou or equal
Capacity 100 cfm@ 0.3 bar
MULTIMEDIA FILTER
Quantity 1 set (1 duty, 0 stand by)
Complete with Front Pipes. Fittings, and Valves
Operation Manual
Vessel 2400 mm dia x 2500 mm H
Material Mild steel with epoxy painting
Media type Anthracite, Silica Sand
Volume Media 6000 liters
ACTIVATED CARBON FILTER
Quantity 2 set (1 duty, 1 stand by)
Complete with Front Pipes, Fittings, and Valves
Operation Manual
Vessel 2400 mm dia x 1850 mm H
Material Mild steel with epoxy painting
Media type Activated Carbon
Volume Media 9000 liters
FILTER BACKWASH DISCHARGE TRANSFER PUMP
Quantity 1 set
Complete with Pipes, Fittings, and Valves
Type Horizontal end suction
Make Grundfos or equal
Flowrate 80 m³/hr
Discharge head 20 m
Motor 7.5 kW, 380V/3ph/50Hz
B. RO SYSTEM
REVERSE OSMOSIS UNIT
PRE FILTER/CARTRIDGE FILTER
Quantity 1 set
Type Cartridge 5 micron
Service flowrate 72 m³/hr
Material of construction
– Housing Stainless steel (SS 316)
– Cartridge 5 micron nominal x 40” Length
Cartridge quantity 18 pcs
HIGH PRESSURE PUMP
Quantity 1 set (1 duty, 0 standby)
Type Centrifugal multistage
Make Grundfos CRN 64-5 or equal
Flowrate 72 m³/hr
Discharge head 100 m
Material Stainless Steel
Motor 30 kW, 380V/3ph/50Hz
REVERSE OSMOSIS MODULE
Quantity 1 set
Configuration 2 stage
Array 6 : 3
Recovery 75%
Permeate 50 m³/hr
Housing FRP
Make Codeline
Pressure rating 300 psi
Housing quantity 9 pcs
Membrane quantity 54 pcs
Membrane specification
Make Dow Filmtec BW30-400
Size 8” x 40”
Type Polyamide Thin-Film Composite
Accessories – Rota meter x 2 nos
– Pressure gauge x 5 nos
– Pressure switch x 2 nos
– Conductivity meter x 2 no
– Valves x 1 lot
CLEANING IN PLACE (CIP)
Tank
Quantity 1 set
Type Vertical, cylindrical
Capacity 3 m3
Material PE-Profil Tank
Pump
Quantity 1 set
Type Centrifugal multistage
Make Grundfos CRN 45-2 or equal
Flowrate 50 m3/h
Head 30 m
Material Stainless Steel
Motor 7.5 kW, 380V/3ph/50Hz
CHEMICAL DOSING UNIT
Quantity 2 sets
Chemical Bisulfite
Anti Scalant
DOSING TANK (Per set)
Quantity 1 no
Type Vertical, cylindrical
Capacity 150 litres
Material PE-Profil Tank
DOSING PUMP (Per set)
Quantity 1 no
Type Solenoid drive diaphragm, manual adjustment
Make Grundfos, Prominent, or Milton Roy
Flowrate 0.7 Ltr/h
Pressure 16 bar
Material PP
PIPING AND VALVE
Quantity 1 lot
Material PVC Rucika (Low Pressure)
Stainless Steel SS 304 (High Pressure)
Main Size 4”
RO PERMEATE/PRODUCT TANK
Quantity 1 set
Complete with Pipes, Fitting, Valves and Acessories
Capacity 15 m3 x 2
Vessel 2900 mm dia x 2423 mm H
Material HDPE
RO PERMAETE/PRODUCT WATER PUMP
Quantity 2 sets (1 duty, 1 stand by)
Complete with Pipes, Fitting, Valves and Acessories
Type Horizontal end suction
Make Grundfos 45-2-2 or equal
Flowrate 50 m³/hr
Discharge head 24 m
Motor 5.5 kW, 380V/3ph/50Hz
HDPE PIPE PRODUCT WATER DELIVERY to BOILER FEED TANK
Quantity 1 lot
Complete with Fittings, Valves, Support
Length 100 meters
Size 110 mm OD
Material HDPE
RO CONCENTRATE STORAGE TANK
Quantity 1 set
Capacity 60 m3
Vessel Tank with Coated, Support Structure, Platform
Tower Height 12681 mm
Material Carbon Steel
C. INTERCONNECTING PIPE
Quantity 1 lot
Complete with Pipeworks, Fittings, Valves, Support
Material PVC Rucika Class 7
Galvanized Iron B
D. CONTROL PANEL AND ELECTRICAL WIRING
Quantity 1 no
Type Indoor
Access Front
Material Mild steel with oven baked epoxy finish
Supply voltage 380V/50Hz/3ph/4 wire
PLC Merlin Gerlin
The control panel shall comprise of following
- One (1) no main circuit breaker with indicating light
- One (1) lot motor starter, each consist of isolating switch, contactor, thermal overload relay, selector switch, and indicating lamps
