[     Business case listing ](/en/case-studies "  Business case listing")



 

 

 

### The Client’s Needs

- Biological control
- Condenser Approach Temperature 2.2°C resulted in high energy consumption
- Constant high condenser high pressure due to biofouling
- Improve energy savings on operating costs



 

 

 



###   
Veolia Solution

- Veolia has been awarded a service contract to treat 3 cooling towers which have been operated for 4 years.
- Hydrex 7514 is used for biofouling clean-up without chlorine, foaming and pH fluctuation whereas a combination of Hydrex 2510, Hydrex 2250 and Hydrex 7310 is used for treatment maintenance.
- Besides, Veolia provided 1 year service contract including maintenance and services renewable.

###   
Results

- Reduction of current biofouling in 24 hours to meet system set specification.
- Reduction of Condenser Approach Temperature from 2.2°C to 0.8°C the next day and maintained constantly at 0.5°C. This helped to reduce energy consumption in operating the vapour compression system for air conditioning in the hotel.



 

 

 



 

 

### *The Client*

*The hotel started its operations in 2007. Superbly located in Singapore downtown, it is the most prestigious 5 stars hotel with 299 rooms.*