Cooling towers perform a vital role in the removal of waste heat from heat exchange systems. The cooling tower water treatment system is usually essential to ensure an efficient process and long equipment life.

If the cooling tower water is left untreated, scaling, corrosion, fouling, micro biological contamination can reduce plant productivity cause plant downtime and increase maintenance cost. The basics objectives of successful cooling water treatment programme are increased production output, increased process efficiency, and maximized equipment life by preventing scaling, deposition, corrosion of the metal surfaces and microbiological contamination without damaging the environment. A cooling tower water treatment system is made up of the technologies required to control the level of

• Total Dissolved Solids contribute to scaling, foaming, corrosion
• Totals Suspended Solids cause scaling, corrosion, fouling etc
• Alkalinity will command potential of calcium carbonate scale
• Chlorides is corrosive to metals and different levels will be abided based on materials of cooling tower and equipment
• Hardness contributes to scale in the cooling tower and on heat exchangers
• Iron can foul on equipment when combined with phosphate
• Organic matter promotes microorganism growth which can lead to fouling, corrosion
• Silica causing hard scale deposits
• Sulphates extremely corrosive to metals like chloride

Principle of water problems encountered in the cooling system

Scaling is a thick coating of mainly in organic material formed from the precipitation of water-soluble elements that convert insoluble at higher temperature such as calcium carbonate. Scale controls with heat transfer and decrease the flow. Principle factors determination of water scaling are

• Amount of scale forming materials
• Alkalinity/Acidity
• Temperature
• Influence of other dissolved solids

Corrosion is a chemical process that involves the oxidation of the construction material of cooling water systems. Corrosion causes premature failure of metals; deposits of corrosion products reduce both heat transfer and water flow rates. The characteristics of water affect the corrosion are

• Oxygen and other dissolved solids
• Dissolved suspended solids
• Temperature
• Velocity
• Alkalinity or Acidity
• Microbial activity

Fouling outcomes from the settling of suspended solids buildup of corrosion products and growth of microbial masses. Foulants like dirt, slit, sand, corrosion products, natural organics, microbial masses, iron phosphate etc, come from external sources around the cooling tower or internal sources such as products of corrosion. Fouling has the similar effect on the system as scaling but fouling also promotes sever corrosion under deposit. Dissolved & Suspended solids, temperature, flow velocity, microbial growth will influence the fouling in the cooling system. Cooling water system provide an ideal environment for bacteria to grow, multiply and cause deposit problems in heat exchangers. If microbiological contamination is not controlled in the cooling system, it causes serious damage by plugging drain holes and fouling heat exchangers very badly. The treatment of cooling water follows the same basic principles for all types of cooling systems and chemical treatment is the only cost effective & reliable solution to the water problems. Since monitoring a water treatment programme is the key to success, the proposal must include method of control monitoring and follow up. Corrective actions are required for an effective cooling heating water treatment programme. The goal of monitoring is to identify potential problem before they arise.

Most effective cooling water treatment program

• A complete system survey is desired to fully understand the system and processes well enough to identify areas where the cooling system operation can add value to the process.
• A thorough survey will cover the mechanical, operational and chemical aspects of the entire system to collect the data.
• Execution of performance monitoring program to evaluate heat transfer efficiency, corrosion control, deposition control and microbial control
• Use of analytical testing, routine on-site testing and regular lab analyses, to confirm optimum operation. Monitoring and control must be continuous and must utilize the suitable techniques and equipment
• Optimization of chemical treatment and automated system control programs
• Plant personnel including operators, supervisors, engineers and managers must understand the value of the cooling water system in relation to production and must be dedicated to maintain and control the program.

It is important that the correct cooling water conditions are established and then maintained at all times to ensure such cooling water parameters are correctly maintained and operate at optimum efficiency. This can be achieved by selecting right cooling tower water treatment programme.

Benefits of cooling water treatment

• Prevent scale formation and guaranteeing efficient operation
• Controls corrosion of both ferrous and non-ferrous metal and extend equipment life through effective metal passivation
• Remove scale, oils, and metal oxides
• Return efficacy by aiding removal of fouling, sludge deposits, biological matter, and scale build up.
• Preparing metal surfaces for rapid, complete passivation and increasing the life of cooling system equipment.
• Prevents Biological Growth control.
• Sterilize cooling water system and prevents biological fouling.
• Effective controlling growth of SRBs, Algae, Bacteria and Fungi
• Optimizing the water consumption by consenting higher cycles of concentration

Our extensive range of specialty chemicals for cooling water treatment applications includes highly effective dispersants, corrosion inhibitors for both hard and soft water and innovative multi-functional scale and corrosion inhibitor formulations. We also offer a full range of high-performance biocides for microbiological control activities in cooling towers and other cooling systems.

The comprehensive range of high-performance cooling water treatment chemicals have been technically formulated to enhance the performance of the cooling system.

Kimberlite Water Plus provide comprehensive cooling water treatment programs that are scientifically formulated to deliver substantial operational benefits and performance enhancements to cooling system.

Also, our products mitigate the problems of scaling, corrosion and fouling in open circulating, once through and closed loop cooling systems, resulting reduction in water consumption and optimization of heat transfer efficiency.

Tacelene Chem® range of Cooling Water Treatment products

• Polymeric Scale Dispersant
• Corrosion Inhibitors
• Bio Dispersants
• Range of Biocides
• Closed Loop treatment chemicals

Expert Technical Service

We provide the regular technical service through well trained field technical executives with the following protocol.

• Inspect the system undergoing treatment and conducting the field analysis of water samples
• Prepare the reports and discuss the finding for corrective measures
• Train the operators for routine analysis and maintaining book keeping
• Ensuring the optimum chemicals dosage & Chemicals inventory
• Discuss the performance & issues if any with concerned authorities

Chemical control, monitoring of results and corrective actions are necessary for an effective cooling water treatment programme. Wide variety of analytical tools and monitoring strategies are available to help in developing and maintaining treatment programme that will provide an effective operation.

Important problem-solving tools
 

• Cooling water treatment application proficiency
• Investigative expertise
• Laboratory analysis
• Water analysis (Onsite & Lab)
• Deposit analysis
• Corrosion & deposition monitoring plans
• Microbial analysis
• Metallurgical analysis