Cooling Tower Water Treatment Against Algae and Fungus

Here's something on the Siemens product...

http://www.water.siemens.com/SiteCollectionDocuments/Product_Lines/Wallace_and_Tiernan_Products/Brochures/WT.085.272.008.IE.AN.0409.pdf

Thank you Mr. SolarEagle for your reply.

The link , http://www.water.siemens.com/SiteCollectionDocuments/Product_Lines/Wallace_and_Tiernan_Products/Brochures/WT.085.272.008.IE.AN.0409.pdf

provided by you is not openeing. I request you to post in through CR4 MAIL LINK since personal mail Id. etc is prohibited.

Thanks,

DHAYANANDHAN.S

I don't know of any Power Point presentation to help you out.

I am assuming that by using the terminology "cooling tower water" that the water is meant for a mechanical process and not for human consumption.

Is this cooling tower open to the atmosphere? Is the cooling water continuously recirculated?

First thing I'm wonder about is the reason why your cooling water is experiencing algae problems in the first place. Treating the water with chlorine or chlorine dioxide is like treating a serious wound with a Band-Aid. There are several reasons why you are experiencing algae blooms: inefficient nutrient removal, depleted dissolved oxygen levels (especially at the lower deeper stratums), and pH control problems.

You need to get a handle on removing the soluble and insoluble nutrients in your water, throughout the system. Eliminate them as much as possible from the water, with effective pre-treatment and treatment strategies, and you will see an marked decrease in the formation of algae.

Provide oxygenation and complete mix of the stored water, especially introduced to the lower stagnated stratums in your tank/tower.

Identify the type(s) of algae and fungus present in the tower so as to determine the best selection of algaecide(s) to introduce into the water.

Here's a very good US Army Corp of Engineers document regarding algae control (not a link):

http://glmris.anl.gov/documents/docs/anscontrol/Algaecides.pdf

Thank You Mr. CaptMoosie, for your reply.

Water is meant for circulation in Cooling Tower and NOT for human consumption. The cooling Tower Basin and entire Tower is open to atmosphere.

We are using some chemicals, still the problem persists, and Chlorine-di-oxide system is advised, but the cost is very enormous. Hence I posted this in this forum.

Thanks,

DHAYANANDHAN.S

The cost of not doing it is also enormous: tower systems are supposed to be treated to eliminate the risk of legionella pneumophila pervading the surroundings and creating health havoc around individuals that may be close to the tower.

Contact a reputable local water treatment company that specialises in this field and contract-out both the service and the risk. Do not D-I-Y this task; that the item has been posted here would suggest that there is insufficient local resource being applied to the issue.

Thank You Mr. PWSlack for your advise.

Infact we are treating the water but it did not yield desired results. Scaling is also found on the louvers and fill bars.

Already we are in touch with reputed water treatment agencies. Use of Clo2 is also resulted inexplosion, in the neighbouring factory, caused serious problem, and to be carefully understood and decided.

However cost alone is not the deciding criterion, since PERFORMANCE, SAFETY, ENVIRONMENTAL FACTORS will be the deciding factors.

Thanks,

DHAYANANDHAN.S

To provide a possible solution to your query, the problem must be well understood. It is very important to maintain the cooling water quality & hygiene at an optimum acceptable level to ensure the efficiency /energy saving as well the employee health. Growth microorganism is best controlled by adopting selective chemical injection methods after a complete microbiological study of cooling waters. Refer the GE water purification handbook chapter 26 & 27 for more clarifications. In general a microbiological study shall provide the total spectrum microbes present in water and their lifecycle. The study reports also contains the material & methods to treat the waters such as chemicals that are highly effective including injection method , quantities and location to dose. The dosing chemicals are usually patented formulations however the formulations can be purchased under certain agreements and these chemicals can be produced in-house economically. Such serviced can be provided if interested

I think the best place to start is with a company who does this for a living. They will provide testing for the water to get your baseline and then once you let them know what your desired outcome is they can put a plan in place to achieve that.

The company that we use has trained our mechanical techs how to do the testing on a weekly basis so the levels stay consistent and adjust the chemicals accordingly.

What is in it for them is the sale of the chemicals and an ongoing relationship.

You may want to check out this firm regarding algae control in cooling towers:

http://www.merusonline.com/algae-cooling-tower

They have a presence in India....

There's also this method for reducing algae growth in cooling towers:

http://sonicalgaecontrol.com/coolingtowers.html

Dear Mr Dhayanandhan,

We have the products based on H202 for treatment of the water and also for the algae treatment in the cooling towers. USP of this product is it does not leave any residues after treatment. You just need to add 250 ml into 1 lakh liters of the water in the cooling tower to control the growth of the algae and for the water treatment it is just 50 ppm. We are based out of Chennai and could assist you in your water treatment.

Thanks

B R Prakash