BacComber for Distilleries Cooling Tower

LOTUS SYSTEMSMay 2008

LOTUS SYSTEMS

Distillery Capacity 1,00,000 liters per dayOperation for 24 hours per day & @ 310 days / yearCooling water flow rate 750 cubic meter per hourRaw water and make water from river

LOTUS SYSTEMS

• Problems faced by Customer– Use of Chemical ineffective– Algae growth was tremendous – Shut down required within 14 days for cleaning

and de-scaling– Loss of production – Requires Frequent Discharge of CT water– Discharge of water creates environment pressure

LOTUS SYSTEMS

• Water quality before installation of BacComber Units Make Up water Cooling tower water

pH ________ 5.5 6.3Conductivity µ mhos/cm3 163 678TDS mg/liter 134 510Total Hardness (as CaCO3) mg/liter 60 330Calcium Hardness (as CaCO3) mg/liter 34 188Magnesium Hardness (as CaCO3) mg/liter 26 142Chlorides (as Cl) mg/liter 4 28.99Silica (as SiO2) mg/liter 8.52 17.63COD mg/liter 70 1400BOD mg/liter 16 324Phosphates (as PO4) mg/liter 7.42 10.6Turbidity NTU 17 40Total Suspended solids mg/liter 6.8 53Iron (as Fe) mg/liter 0.35 4.28Standard plate count /ml Un-countable Un-countable

LOTUS SYSTEMS

• Water quality before installation of BacComber– Formation of Algae

LOTUS SYSTEMS

• Water quality before installation of BacComber– Ineffective chemical

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• Four Inductor coils & four Electrode sets installed • Additional system provided for proper water

circulation – Water circulating pumps added– Stand-by water pumps provided

• Sand filter installed for make-up water

LOTUS SYSTEMS

• Installation Layout

LOTUS SYSTEMS

LOTUS SYSTEMS

• Effect of BacComber after three weeks

UnitsCooling tower water (Before)

Cooling tower water (After)

pH ________ 6.3Conductivity µ mhos/cm3 678TDS mg/liter 510Total Hardness (as CaCO3) mg/liter 330Calcium Hardness (as CaCO3) mg/liter 188Magnesium Hardness (as CaCO3) mg/liter 142Chlorides (as Cl) mg/liter 28.99Silica (as SiO2) mg/liter 17.63COD mg/liter 1400BOD mg/liter 324Phosphates (as PO4) mg/liter 10.6Turbidity NTU 40Total Suspended solids mg/liter 53Iron (as Fe) mg/liter 4.28Standard plate count /ml Un-countable

LOTUS SYSTEMS

• Water quality after BacComber installation - Photographs after 3 weeks- Turbidity reduced Dead Algae / bacteria

LOTUS SYSTEMS

• Water quality after BacComber installation

0 week 3 weeks 4 weeks 12 weeks

LOTUS SYSTEMS

• Water quality after BacComber installation – Algae reduced– TDS reduced– Clean water– Water saving achieved

LOTUS SYSTEMS

Advantages to customer• Tangible benefits – Saving in use of Chemical Rs. 4,00,000 p.a.– Saving in blow down water Rs. 3,00,000 p.a.

• Intangible Benefits– Reduction in shut down by @ 50 % (7 days) (Rs 35Lacks) – Increase in life of condenser coils

• ROI (Pay back of equipment)– Expected in eighteen months with tangible benefits