Rethink Cooling TowersSide Stream Filtration

& Ozonation

Typical Cooling Towers

• Cooling Tower Capacities• Flow rates• TSS • Microbiological load• Fouling

• 500 TR – 5,000 TR • 500 – 5,000 m³/hr• 30 – 50 ppm• 10 – 10 MPN• Slime

62

Concern areas• Environment pollution - dirt (TSS)• Slime formation• Scaling• Corrosion• High dissolved solids - TDS• Microbiological growth• Formation of organic impurities• Frequent blow down• Efficiency

Requirement

Customization

Optimization

Solution

• Main stream or side stream filtration

• Optimized diffusion of Ozone

Solution - Filtration

• Side stream filtration of 8 – 12 % of mainstream flow

• Automatic Self cleaning filter

• Pressure Sand Filter

Advantages - PSF

• Worldwide proven technology• Depth Filtration• Excellent for fine silt• Online • Very low waste water• Long life• Negligible maintenance

Ozone GenerationOxygen Preparation

Ozone Generation

Ozone Injection

Ozone Diffusion

Ozone Contactor

Oxygen Preparation

• Oxygen From Ambient Air• Oxygen concentrator• More than 90% concentration• Dry Industrial Grade Oxygen

Ozone Generator

• High voltage, High frequency Generator• SS 316 Grade Ozone Cell• High Efficient Enameled Cell• Ozone Cell safety circuits• Dual Electrode Water Cooled Ozone Cell• Ozone under –ve Pressure

Ozone Injection & Diffusion

• Venturi Ejector• Sparger• Chemone Diffuser cum Contactor• Valves, pumps etc• Water Trap• Ozone Vent

Advantages - ozonation

• Considerable reduction in the use of chemicals except for pH balancing

• Greatly reduces Blowdown• Ends discharge liabilities and chemical storage record keeping• Destroys all types of microorganisms instantly• Minimizes condenser fouling• decomposes organic waste by oxidation

Cont....

• removes existing calcium carbonate scale by destroying the biomass glue bonding agent

• the most environmentally friendly oxidant• reduces the corrosion rate of metals, including copper heat

exchangers• saves on energy costs by increasing the heat transfer efficiency

of the chiller

Reduction of Operating Costs

• Ozone reduces makeup water to the cooling tower by

permitting more cycles between blow downs.

• Reduces the cost and problems in ordering, shipping, handling,

storage, and disposal of regular chemicals.

• Reduces power consumption by keeping the chiller heat

transfer efficiency high through cleaner condenser tubes.

Client : CIPLA Application : Cooling Tower WTPPresent Cost Expected Savings

In ChemicalsSite : Goa CT Capacity : 600 TR x 06 nos.

Chemicals Application Quantity Rate/Kg Cost/Month Savings Quantity Cost/Month    Kg/Month INR INR In % Kg/Month INR

Nalco-73385 BIOCIDE 30 885 26,550 50 15 13,275 Nalco-73550 BIODETERGENT 18 780 14,040 50 9 7,020 Nalco-7320 CONTROL MICRO-ORGANISM 30 510 15,300 50 15 7,650 Nalco-7330 BIOCIDE 30 272 8,160 50 15 4,080 3DT-189 COOLING WATER TREATMENT 150 345 51,750  NIL 150 51,750 Nalco-3935 CONTROL MICROORGANISM 1,200 62 74,400 50 600 37,200 3DT-190 COOLING WATER TREATMENT 36 460 16,560  NIL 36 16,560 Sulphuric Acid   300   0  NIL 300 0 Sodium Hypochlorite   1,200 21 25,200 50 600 12,600

Total       231,960     150,135 Total Cost Savings Per Month Rs.  81,825 Total Cost Savings Per Year Rs. 981,900 Ozonator Cost (Supply + I & C + P & F + Tax) Rs. 1,345,000 Return On Investment [ROI] - Less than 16 months Yr 1.37 Reduction In Blow Down Water Quantity - Approx. 25 - 30 %

Installation Scheme

Process Flow Diagram

Suitable For 100 TR – 500

TR

Installation Scheme

Process Flow Diagram

Suitable For 300 TR – 5,000 TR

Installation Precautions

• The feed gas preparation must include removal of particulate matter, moisture and oil.

• Make-up water should be free from sediment, mud, and discoloration

• Material of construction in the ozone treated system should be compatible with ozone

• The ozone generator should be located in an air conditioned area for best ozone generation efficiency

Ozone Doze

• 2.0 – 3.5 ppm in side stream water flow

• 0.2 – 0.4 ppm in main stream water flow

Thanks

Chemtronics Technologies (India) Pvt. Ltd.Solution Engineer : Mr. Sunil Shah - +91-93212 34527

E mail : sunilshah@chemtronicsindia.comwww.chemtronicsindia.com

www.ozonegeneratorindia.com