1. COOLING WATER TREATMENT
REMOVES AND PREVENTS SCALE &
CORROSION FORMATION IN COOLING
SYSTEMS
GREEN EARTH CONCEPT SDN BHD
45-G, JALAN PJU 1A/41B, ARA JAYA, 47301
PETALING JAYA, SELANGOR
TEL: 603-78859649 FAX: 603-78830649
www.greenearthconcept.com.my
ENVIRON™

2. INTRODUCTION
Environ™ cooling water treatment is a state of the art green
technology which provides a comprehensive treatment suitable for
all cooling systems. The Environ™ treatment is a proprietary Alkyl
Polyglycoside an extraction of plant-based glucose blended with
other biochemical organics with 91% biodegradability.
It is a 100% NATURAL water-based eco friendly innovation which
works by reducing the surface tension of the water so it can wet the
fibres and surfaces, loosen and encapsulate the scaling, corrosion
and fouling and prevents re-deposition on the surfaces.
Environ™ cooling water treatment ensures improve heat transfer and
increase system’s efficiency by effectively removing scaling and
fouling. Further, Environ™ cooling water treatment also prolongs
equipment life by preventing corrosion by forming a hydrophobic
film on the metal surfaces to prevent “oxidation” process.
MAJOR CONCERNS OFA COOLING SYSTEM
1. Scale Deposition: Caused by the crystallization of ionized
mineral (+ and – charged ions) dissolved in water.
Solution: By binding with the + charged ions, the two
ionic particles are kept separated and dissolved in
water to prevent formation of scales.
2. Corrosion: Caused by the electrochemical oxidation of metals in
reaction with oxygen.
Solution: By forming a preventive film on the metal
surfaces to prevent “oxidation” process.
3. Bio-fouling and Sludge Accumulation: Caused by the growth and
reproduction of bacteria and other micro organism.
Solution: Preventing free microorganisms attaching to
the surfaces by organic dispersant.

3. HOW DOES ENVIRON™ WORKS
The compositions in the Environ™ cooling water treatment prevents
scaling, corrosion and control bio-growth by:
1. By keeping the dissolved minerals separated and
suspended in solution to prevent precipitation using the
inter-molecular debonding action.
2. Utilises the organic acid chemistry in the formulation to solubilize
the existing scale and rust on the surfaces which will gradually
break up into soft powdery sludge.
3. The organics in the corrosion inhibitor will form a hydrophobic
film on the metal surfaces to prevent “oxidation” process.
4. Prevents attachment of free floating microorganisms onto surfaces.
+ charged ions (cations) - charged ions (anions)
Calcium (Ca2+) Chloride (Cl-)
Magnesium (Mg2+) Sulfate (SO4
2-)
Carbonate (CO3-)
Bicarbonate (HCO3
-)

4. LOCATION: Office Building In Kuala Lumpur
PROFILE: 2 Months On-line Descaling Treatment For 286 units
Water-Cooled Packages (WCP)
DURATION: March 2011 – May 2011
Problems faced before treatment:
• Constant tripping of compressors due to overheating of the cooling-coils.
Before Treatment
February 2011
Pipe Section corroded, coated
with scale. Surface is rough
After 2 Months Descaling
May 2011
Pipe Section showed a cleaner
and smoother surface with
almost no rust and scale
exposing the colour of the
piping
The softened scale
and rust detached
from the pipe
section
CASE STUDY 1

5. LOCATION: Semi Conductor Plant
PROFILE: Off-line Cleaning of the Condenser Tubes
DURATION: 6 Hours Circulation
Circulation: 6 Hours
The scale and rust in
the condenser tubes has
softened.
Tube cleaning to remove all the softened
deposition and slime. Visual inspection
showed the condenser tubes are clean.
CASE STUDY 2

6. LOCATION: Car Assembly Plant
PROFILE: Weekly Maintenance Treatment for the Spot Welding
Section in support of 300 welding guns
Problems faced before treatment:
• Approximately 10-15% failure rate of the Spot Welding Guns and
Kickless Cables overheating
• Scales built-up inside the process cooling water pipe lines which
caused poor water distribution
0
0.05
0.1
0.15
0.2
0.25
1 2 3 4 5 6 7 8 9 10 11
ppt
Week
TDS
Water In Water Out Basin Make-up
0
0.1
0.2
0.3
0.4
0.5
1 2 3 4 5 6 7 8 9 10 11
mS/cm
Week
Conductivity
Water In Water Out Basin Make-up
By the second week of
treatment the TDS (Total
Dissolved Solids) and
Conductivity readings
showed gradual increase
due to the reaction of the
product with the cooling
water. It works by
breaking up and
softening the old built-
up scales in the system.
Strainers removed from the spot welding guns clogged with
softened scale and rust.
CASE STUDY 3

7. LOCATION: Fenix Tower, Thailand
PROFILE: Chilled Water Treatment
DURATION: Every 4 – 6 Months
Cleaning of chilled water looped
The softened debris collected on the filter mesh
A cleaned filter mesh after rinsing with water
CASE STUDY 4

8. LOCATION: High Rise Commercial Office Building in Kuala Lumpur
PROFILE: One Month On-line Descaling and Maintenance Treatment
Problems Faced Before Treatment:
• High Approach Temperature in the chillers
• Management complained of high energy consumption
• Tenants complained of poor air conditioning
0
5
10
15
20
25
30 April 4 May 9 May 11 May 14 May 17 May 19 May 21 May
CondenserApproach
Temperature(DegreesF)
C-1-1 C-1-2 C-2-1 C-2-2
Recorded Chiller Approach Temp taken from the log sheet during site visit:
Date C-1-1 C-1-2 C-2-1 C-2-2
30 April 14.8 °F 17.3 °F 18.4 °F 19.9 °F
In one month the Approach Temp. has come down to below 7 °F.
Water Quality Parameters 30 April 13 May 17 May 24 May
pH 8.19 8.1 8 8.25
Total Hardness 123 185 175 114 mg/l
TDS 220 380 350 200 ppm
Conductivity 450 760 720 400 uS/cm
0
200
400
600
800
30 April 13 May 17 May 24 May
Water Quality Parameters
Total Hardness TDS Conductivity
The increased in TDS and Conductivity in the recirculating cooling
water is due to the breaking down of the scale deposits on the metal
surfaces which caused the poor heat transfer
CASE STUDY 5

9. LOCATION: China Overseas Plaza
PROFILE: Treatment to soften the existing scaling problem and
improve the system’s efficiency using Environ I-3C™
DURATION: 4 -5 weeks
2nd week of treatment: The scale has softened and
can be scrapped off with the fingers
4th week of treatment: The scale has become sludge-like
CASE STUDY 6