REVERSE OSMOSISM3D

M3D - LMEA Coles

Aim

To achieve a greater

understanding and appreciation of

HMS Lancaster’s Pall Rochem

Reverse Osmosis Plants

Objectives

Understand basic Reverse Osmosis theory. Recognize plant components. Learn basic operations of the RO plant. Appreciate cleaning & maintenance

procedures.

Natural Osmosis

FRESH WATER SALT WATER

Reverse Osmosis

FRESH WATER SALT WATER

Producing Fresh Water

Operating Pressure

Salt Content of Feed Water

Feed Water Temperatur

e

Producing Fresh Water

Operating Pressure

Salt Content of Feed Water

Feed Water Temperatur

e

Producing Fresh Water

Operating Pressure

Salt Content of Feed Water

Feed Water Temperatur

e

Water Production Rates

27 25 23 21 19 17 15 13 11 9 7 5 30%

20%

40%

60%

80%

100%

120%

FM 161FM 161 162FM 161 162 163

Temperature °C

Per

form

ance

Pro

du

ctio

n %

Components

Component - ControlsConductivityMeters2000µS & 50µS

VK121Sea Water / Tank

Cleaning Tank level

VK120Operating / Cleaning Mode

1. Pressure Permeate Line 0-10bar2. Feed Water into DT Modules 0-10bar3. Feed Water pressure into HP Pp 0-100bar4. Feed Water to Cartridge Filter 0-10bar5. Feed Water to Pump 0-10bar

1. Start2. Stop3. Cleaning4. Service5. Fault6. RO2

Flow Indicators(Small) Clean(Large) Made

Component - Controls

PLC

Control program is stored on a microchip called EEPROM.

The program is loaded in to the memory RAM.

The plant then receives I/O signals which change the throttle Vv and relays.

Component – LP Feed

1 • Filter Pump• Centrifugal Pump supplying 2.5 to 4.5bar

2• Bag Filter – 50µ Sediment Particles• RN Mod Filter Chamber - 10µ Sediment

Particles

3 • Cartridge Filter - 5µ Sediment Particles • (Maximum of 2.5bar)

Component – LP Feed

Component – HP Feed

Component – Motor Valve

Component – Modules

FM161

SEAWATER

DRINKING WATER (MADE) PERMEATE

OVERBOARD

Component – Modules

FM161 FM162

SEAWATER

DRINKING WATER (MADE) PERMEATE

OVERBOARD

Sea Temp 15°C (-10°C) 30% Production Lose

Component – Modules

FM161 FM162 FM163

SEAWATER

DRINKING WATER (MADE) PERMEATE

OVERBOARD

Sea Temp 8°C

Component – Modules

FM161 FM162 FM163 FM260

SEAWATER

DRINKING WATER (MADE) PERMEATE

OVERBOARD

DEMIN (CLEAN)

Component – Modules

Component – Dosing

Operating

Starting Checks

1 • Check the system is correctly opened up from the Sea tube to the Aft BKD.

2 • Shut 3x Module Vv’s.

3 • Place VK120 in the operating position.• Place VK121 is in the Sea Water position.

Starting Checks

4• Ensure the plant dosing pump is switched

on.• Drain the cleaning tank VK111.

5 • Check that the LP Feed Vv (behind the cartridge filters) is open.

6 • Open the Discharge to Bilge until Conductivity is below 2000µS.

Starting

1 2 3 4 5 6

START STOP CLEANING SERVICE FAULT

LAMPTEST

RO2

Stop With Rinse

1 2 3 4 5 6

START STOP CLEANING SERVICE FAULT

LAMPTEST

RO2

Rinse Routine

1 • Press Stop. Stop light will flash and cleaning tank level will rise.

2• Stop light will stop flashing. Place VK121

to Cleaning Tank. Place VK120 to Operating Mode.

3 • Press Start. When cleaning tank reaches zero plant will shut down.

RO2

1 2 3 4 5 6

START STOP CLEANING SERVICE FAULT

LAMPTEST

RO2

Lamp Test

1 2 3 4 5 6

START STOP CLEANING SERVICE FAULT

LAMPTEST

RO2

Fault

1 2 3 4 5 6

START STOP CLEANING SERVICE FAULT

LAMPTEST

RO2

Types of Cleaner & Inhibitor D

Cleaner A – Organic Sediment and Fouling - 4 Weekly

5L 5L 5L 5L

Cleaner C – Iron Fouling - 4 Monthly

2.5L

2.5L

2.5L

2.5L

2.5L

2.5L

2.5L

2.5L

Summary

Difference between Osmosis and Reverse Osmosis theory.

Plant components including controls, LP feed, HP pump, throttle Vv, module configuration, dosing.

Operations such as starting, stopping, faults and lamp tests.

Cleaners and inhibitors.

Any Questions?