conventional cooling water treatment system for zero liquid discharge

SCALE-BANTM
A Sustainable solution
for achieving ZLD &
Scale free operation.
A Fit & Forget System…
Continuously improving the possibilities to
Innovate the conservation of natural resources….
A Non Chemical Water Treatment…
Our Vision:
Our Vision is to provide a Self
Sustainable, Efficient and Cost Effective
Zero Liquid Discharge (ZLD) solution in
HVAC.
A Fit & Forget System
Revolution in Water Treatment…
Optimizing
Production
OUR
MOTTO
Maximizing Water
Conservation
Minimizing Water
Pollution
A Fit & Forget System
Revolution in Water Treatment…
 SCALE-BANTM equipment has been developed by years of
researches & trials. It is in commercial production since
1999. Now the technology has been proven and well
tested. We have references of its working in various type of
industries and applications where this equipment is
successfully running.
 “SCALE-BANTM Equipment is an online non chemical water
treatment equipment which gives excellent water savings
beside total prevention of hard water scale in heat
exchangers in cooling water services.”
A Fit & Forget System
Revolution in Water Treatment…
Problems & concerns:
Zero Liquid Discharge (ZLD)
 Conventional systems like Effluent RO & MEE are very
costly to install & operate
SCALING IN HEAT EXCHANGERS
Impacts of scaling:
 Loss of production, Increased power consumption and
Increased steam consumption.
 Increased water consumption and water pollution
A Fit & Forget System
Revolution in Water Treatment…
Facts & figures:
“A scale of even 0.5 mm causes an energy loss of 7%”
Efficiency Loss in %
4
11
27
48
90
0.3
0.71
4.7
9.5
A Fit & Forget System
Revolution in Water Treatment…
Available methods for ZLD & Scale Prevention.
Conventional
Softener
Plant
Anti Scaling
Chemical
Treatment
SCALE-BAN
NonChemical
Water
Treatment
Equipment
Effluent RO
& MEE
A Fit & Forget System
Revolution in Water Treatment…
Limitations of Conventional treatment Methods:
 ETP treated water can be consumed only after treatment through
RO Plant.
 For Utilization of RO Reject Secondary RO / MEE is required.
 Restricted level of hardness and TDS in cooling water (Heavy Blow
down).
 Water consumption, wastage and pollution is increased.
 Recurring Expenses on softener operation, Effluent RO/MEE
operations and anti-scalant chemical dosing in cooling towers.
 No guarantee for zero scale (Production losses).
 Cleaning of the tubes is required.
‘SCALEBAN’ SCENARIO:

Direct use of ETP treated & RO rejected water in cooling tower with
ZERO OPERATIONAL EXPENDITURE.

Cooling tower will be operated at very high hardness up to 20,000 PPM
and at very high TDS up to 2,00,000 PPM.

Unbelievable COC level of 15-20 in cooling tower.

Reduction in cooling tower blow down by 90%.

Elimination of Softener & anti-scaling chemical from cooling tower.

Zero scale is guaranteed for 20 years.

No requirement of cleaning of the heat exchangers.
Working Principle of
TM
SCALE-BAN :
Innovation evolved from the
problem
HOW DOES SCALEBAN PREVENT SCALING IN YOUR EQUIPMENT?
SCALEBAN is an online pipe shaped mechanical device which houses very
specially designed core that is Sintered with number of electronegative
elements in their order of increasing electro negativity in the direction of
water/fluid flow. As feed water/fluid passes through SCALEBAN, it acts as an
electrolyte while it comes in contact with the core placed inside SCALEBAN.
SCALEBAN makes use of Galvanic principle by locally enhancing the pH value
of feed water/fluid. Due to the Galvanic action, the core gets negatively
charged and attracts the lightest ions present in the fluid i.e. Hydrogen ion
towards itself. The relationship between pH of water/fluid and H+ ion is
expressed by the formula pH α 1/H+.
Thus, with the concentration of H+ ion becoming comparatively less in the
water/fluid inside the equipment, pH value increases, there by precipitating
Calcium and Magnesium salts before it comes in contact with hot tubes.
Consequently, once the precipitation of these hardness causing salts has
taken place, further precipitation due to temperature variation is not
possible.
SCALEBAN precipitates out Calcium and Magnesium bicarbonates in the
colloidal form of Aragonite crystals much before the water/fluid attains the
critical temperature of super saturation due to its coming in contact with hot
tubes.
These precipitated salts are in the colloidal form (small particles dispersed in
another substance) and are suspended in water/fluid, and because of their
very small size and lighter weight, the water/fluid flowing through SCALEBAN carries away these precipitated salts. THE NET RESULT IS TOTAL
PREVENTION OF HARD SCALE IN THESE SYSTEMS.
S1
Ca++
Mg++
H.E.
S2
T1
T2
Temperature 
Relationship of Temperature &
Solubility of Ca2+ and Mg2+ in Liquid
SCALEBAN
SOLUBILITY
SOLUBILITY
SOLUBILITY CHARACTERISTICS OF LIQUID
S1
Ca++ SCALEBAN
Mg++
S2
P1
P2
pH Value 
Relationship of pH & Solubility
of Ca2+ and Mg2+in Liquid
GALVANIC PRINCIPLE
Working process of
SCALE-BANTM
A Fit & Forget System
Revolution in Water Treatment…
Cooling
Tower
PUMP
Precipitated Scaling salts are colloidal
particles of non sticky nature thus do not
deposit on the Heat Exchanger’s surface
H+ H+
H+
H+
H+
H+
H+
H+
-Ve
Heat Exchanger
Charge
H+
H+ H+
A Fit & Forget System
H+
H+
H+
H+
H+
Revolution in Water Treatment…
HOW TO DESIGN A SELF SUSTAINABLE,
EFFICIENT AND COST EFFECTIVE ZERO
LIQUID DISCHARGE MODEL!!
A Fit & Forget System
Revolution in Water Treatment…
CONVENTIONAL COOLING WATER TREATMENT SYSTEM
FOR ZERO LIQUID DISCHARGE (ZLD)
(WITHOUT SCALEBAN)
SOFT WATER
Make up water
SALTY WATER
COOLING TOWER
-------------------------------3-4 COC
------------------------------------------------------------
EFFLUENT
TREATMENT PLANT
ETP TREATED
WATER
CT Blow Down water
RO PLANT 1
RO PERMEATE
PROCESS
APPLICATIONS
RO PLANT 2
CONDENSER/
COOLERS
CONDENSER/
COOLERS
NON-CONVENTIONAL COOLING WATER TREATMENT SYSTEM
FOR ZERO LIQUID DISCHARGE (ZLD)
(WITH SCALEBAN)
SOFT WATER
Make up water
SALTY WATER
COOLING TOWER
-------------------------------15-20 COC
------------------------------------------------------------
EFFLUENT
TREATMENT PLANT
ETP TREATED
WATER
Negligible Blow Down due to high
COC. Hence can be directly taken for
ash cooling / gardening
RO PLANT 1
RO PERMEATE
PROCESS
APPLICATIONS
RO PLANT 2
CONDENSER/
COOLERS
CONDENSER/
COOLERS
FINAL SCHEME WITH SCALEBAN FOR ACHIEVING
ZERO LIQUID DISCHARGE (ZLD)
CLARIFIED / RO
REJECT / ETP
TREATED WATER
Make up water
COOLING TOWER
-------------------------------------------------------------------------------------------
SCALEBAN
SCALEBAN
Negligible Blow Down due to high
COC. Hence can be directly taken for
ash cooling / Dust seperation
CONDENSER
/ COOLERS
CONDENSER
/ COOLERS
Working Parameters of SCALE-BANTM:
• Neutral pH value of water should be maintained
between 7.5 - 8.3
• The Scaleban should be installed as close to Heat
Exchangers.
A Fit & Forget System
Revolution in Water Treatment…
M/s NTPC DADRI LTD., DADRI (UP) 490MW X
2Nos.
SCALEBAN INSTALLATION IN 490MW
POWER PLANT CONDENSER (NTPC DADRI)
A Fit & Forget System
Revolution in Water Treatment…
2X490MW NTPC, DADRI TPP
One pass of Unit 5 condenser opened on
July 22, 2015 and found Scale free after
15 months.
A Fit & Forget System
Unit 5 condenser tube condition
before installation of Scaleban
Revolution in Water Treatment…
SCALEBAN PERFORMANCE RESULTS 30th Dec. 2015
1. With Installation of Scaleban no scale has been
observed during the complete test.
2. Calculated water saving of 31.44%, anti-scaling
chemical saving of 100% and considerable
reduction in sulfuric acid consumption
and
pumping power.
3. NTPC Dadri had maintained 8.5 COC and may
further increase to 10 depending upon water
requirement for other uses in the plant.
A Fit & Forget System
Revolution in Water Treatment…
BHUSHAN POWER & STEEL LTD., Sambalpur
(Orissa)
Power Plant :
P.O.Date : 01 May 2011
1.
130MW X 3 Nos.
2.
60MW X 1 No.
3.
40MW X 1 No.
4.
8MW X 2Nos.
A Fit & Forget System
CSP Plant :
P.O.Date : 01 May 2011
Oxygen Plant :
P.O. Date : 01 May 2011
Revolution in Water Treatment…
Bengal Energy Ltd., Kharagpur (WB)
40MW CPP (Installation in March 2014)
Condenser tubes at 15 COC
A Fit & Forget System
Revolution in Water Treatment…
Nagarjuna Agri Chem Cooling tower
water analysis report
A Fit & Forget System
Revolution in Water Treatment…
M/S AGRIBIOTECH INDUSTRIES LIMITED,
Ajitgarh, Sikar, Rajasthan
Capacity: 65 KLPD
pH: 7.8
Total Hardness: 30000 PPM
TDS: 75000 PPM
CHLORIDES : 22000 PPM
COD: 1000 PPM
A Fit & Forget System
Revolution in Water Treatment…
M/s PEARL DISTILLERY LTD., Ongole
(A.P.)
Capacity: 65 KLPD
Total Hardness: 3000 PPM
TDS: 15000 PPM
COD: 400
BOD: 250
A Fit & Forget System
Revolution in Water Treatment…
M/S CHAMBAL FERTILIZER, KOTA (RAJ.)
1. SCALE-BAN EQUIPMENT
AT
11E-37 INSTALLED ATR-2008
2. SCALE-BAN EQUIPMENT
AT
21 E-07 INSTALLED ATR-2008
A Fit & Forget System
Revolution in Water Treatment…
Sanghvi Organics, Ankleshwar
A Fit & Forget System
Revolution in Water Treatment…
M/s NEERAJ POWER, TILDA, RAIPUR (C.G.)
A Fit & Forget System
Revolution in Water Treatment…
M/s DEEPAK NITRITE LTD., VADODARA (GUJARAT)
A Fit & Forget System
Revolution in Water Treatment…
M/s WAVE INDUSTRIES LTD., ALIGARH (UP) 90KLPD
A Fit & Forget System
Revolution in Water Treatment…
M/s ENRICA ENTERPRISES PVT. LTD. (GRAIN
BASED DISTILLERY), CHENNAI (80KLPD)
A Fit & Forget System
Revolution in Water Treatment…
References in Industries
A Fit & Forget System
Revolution in Water Treatment…
Scaleban Applications….
POWER PLANT
SOLVENT
EXTRACTION
PLANT
A Fit & Forget System
CHEMICAL PLANT
PHARMA PLANT
DISTILLERY PLANT
TEXTILE
INDUSTRIES
Revolution in Water Treatment…
Thank You!
For Your Attention…
A Fit & Forget System
Revolution in Water Treatment…