Centrifugal Separators and Automatic Screen Filters in
Cooling Tower circuits
When considering the risk for legionnaires' disease contamination, the importance of filtration of re-circulated cooling water becomes evident. Besides chemical treatment against the bacteria in the cooling water, filtration is an important means to eliminate the particles which may serve as feeding base for this dangerous bacteria .
JUMAG contributes to an economic solution to the filtration problem; the Centrifugal Separator. If Organic matter is the major problem, we offer an automatic Screen Filter. Other positive aspects of cooling water filtration are:
- major energy savings. Studies show that a constantly clean heat exchanger can reduce energy costs.
- savings in maintenance costs. It is obvious that continuous filtration of the cooling water will have a very favourable influence on the need for cooling tower basin cleaning, and on the life time of valves and spray nozzles, etc.
- savings in the need for make-up water. With good cooling water filtration, the water will stay clean and furthermore you can bleed (eliminate tower water) over the separator automatic purge valve.
- savings in costs for chemical treatment. Because the circulated water can be prolonged and the need to bleed is less, hence the demand for new chemicals will be reduced.
We apply filtration in three different ways on a cooling tower/heating installation depending on the actual situation:
- Full stream filtration of the total recirculated water flow.
- Side stream filtration, 3 – 15 % of the flow is filtered depending on expected impurity load.
- Cooling tower basin cleaning. An independent skid mounted Separator, including pump, is filtering the sump continuously. The system could also include ejectors/nozzles installed in the basin, creating a floor sweeping effect, to move precipitated solids to the filter system for elimination. A similar skid mounted separator system could be applied in a heating
system as well. The pump will serve as a booster pump, needed to
re-inject the side stream flow into the main recirculation circuit.
Click here for further details of these methods.