Scale
Control mineral precipitation using cycles management, pH control and suitable scale inhibitors or crystal modifiers.
Open Recirculating Cooling Water
Cooling-Tower Water Treatment
YWT India develops treatment programmes around the actual cooling circuit: make-up quality, cycles of concentration, heat load, metallurgy, operating temperature and the condition of heat-transfer surfaces.
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Treatment Objectives
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Four mechanisms determine cooling-system reliability
A successful programme controls the causes and their interaction. Biofilm can trap suspended matter, deposits can create corrosion cells, and scaling can rapidly reduce heat-transfer efficiency.
Corrosion
Protect carbon steel, copper alloys and galvanised surfaces through programme selection, residual control and monitoring.
Fouling
Manage suspended solids, corrosion products and process ingress using dispersants, filtration and system cleaning.
Microbiology
Control planktonic growth and biofilm through system hygiene and a suitable oxidising or non-oxidising biocide strategy.
Programme Engineering
The programme must protect the heat-transfer surface under real operating conditions.
System Assessment
Cooling duty, tower configuration, metallurgy, basin condition, heat exchangers, flow, temperature and operating pattern.
Water Chemistry
Make-up and circulating-water analysis, concentration potential, scaling indices and contaminant loading.
Chemical Programme
Scale and corrosion inhibitors, dispersants, biocides, passivation and clean-up treatment as applicable.
Feed & Blowdown
Dosing points, metering pumps, conductivity control, bleed arrangement, interlocks and chemical storage.
Service Programme
Control limits, field testing, microbiological review, corrosion monitoring, trend interpretation and corrective action.
Operating Control
Monitor chemistry and equipment condition together
The exact schedule depends on the system, but the programme should make deviations visible before heat-transfer loss or equipment damage becomes serious.
Routine Water Parameters
- pH, conductivity and cycles of concentration
- Hardness, alkalinity, silica and relevant ions
- Inhibitor residual and oxidant control
- Make-up and blowdown consumption
System-Condition Indicators
- Corrosion coupons or suitable online trend
- Microbial trend and biofilm risk
- Deposit, basin and heat-exchanger inspection
- Approach temperature, pressure drop and operating trend
YWT Cooling-Water Product Range
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Products selected to suit the system and control objective
Final selection and dosage depend on water analysis, metallurgy, cycles, operating temperature, microbiological condition and the existing treatment programme.
| Function | YWT product |
|---|---|
| Scale and corrosion inhibition | Y 962 L |
| Scale and corrosion inhibition | Y 1065 L |
| Biodispersant | Y 3001 |
| Non-oxidising biocide | Y 4012 |
| Non-oxidising biocide | Y 4015 |
| Non-oxidising microbiological control | Y 4013 |
| Single-product cooling-water treatment | Neutriozyme CT |
| Single-drum cooling-tower treatment | Nanosol CT 100 |
| Descaling | Scaleclean 1509 |
| Oxidising biocide | Y 4004 A & B |
| Chlorine powder | Y 4002 |
| Hypochlorite | Y 4001 |
| Chlorine tablet | Y 4003 |
Product suitability, compatibility and dosing must be confirmed by YWT India before application. Safety data and handling instructions will form part of the supplied programme.
Neutriozyme CT
A multipurpose powder formulation developed for cooling-water systems, combining scale and corrosion control with support for microbiological fouling and algae control. Application remains subject to water chemistry, system condition and YWT approval.
Implementation
A controlled route from survey to optimisation
01
Survey
Map the circuit and operating limits
02
Sample
Analyse water and available deposits
03
Design
Select chemistry and control limits
04
Commission
Establish feed, baseline and training
05
Optimise
Review trends, cycles and total cost
Need a review of the complete cooling circuit?
For cooling-tower performance, chillers, heat exchangers, pumps, exhaust systems and critical utilities, visit the separate Cooling Circuit, HVAC & Critical Utility Systems capability page.
Define the programme around your cooling circuit
Share the make-up and circulating-water analysis, tower details, circulation rate, operating temperatures, metallurgy, cycles, present treatment and current problems.
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