UV Recommendation?

[salvationarmy]

I need something to deal with combined chlorine in our indoor commercial pool. Flow rate is 200 GPM (but will be increased to 240 or so).
Thanks,
Mike

 

[257WbyMag]

UV is helpful for an indoor pool. You can also use potassium monopersulfate for extra oxidization. Just be mindful that MPS will read as CC on your test.

 

[JasonLion]

Try SpectraLight.

 

[salvationarmy]

Thanks 257 and Jason. I have been checking out SpectraLight on the web....

 

[PoolGuyNJ]

While not well know, some peers have made mention of Aqua Ultra Violet products being well designed and work as intended.

See http://www.aquaultraviolet.com/home For more info.

I have no personal experience but the peers that have mentioned it to me, I hold in the highest respect. It, if I had the need, would be where I would go.

Scott

 

[racket]

Thanks 257 and Jason. I have been checking out SpectraLight on the web....

Is this a commercial or residential pool?

I am assuming its commercial which means that in many states they require UV systems to be NSF-50 certified. Which usually means they start on a wholesale level @ $8,000 or so.

If there is no requirement, I'd look into an Aquaultraviolet Viper system.

 

[salvationarmy]

Thanks Poolguy and racket. It is a commercial pool, in Florida. I do not know the state regulations regarding UV.
Mike

 

[salvationarmy]

Just looked at the FL commercial pool code regarding UV. Looks as though ionization equip must be NSF-50 certified, but that UV is not required to be.

Here's the code: http://www.doh.state.fl.us/environment/ ... strike.pdf
2. Ionization equipment shall meet the NSF/ANSI Standard 50-2007, Circulation System Components and
Related Materials for Swimming Pools, Spas/Hot Tubs, or equivalent, shall meet UL standards and shall be
electrically interlocked with recirculation pump.
(f) Ultraviolet (UV) light disinfectant equipment may be used as supplemental water treatment on public pools
(and additional treatment on IWFs) subject to the conditions of this paragraph and manufacturer’s specifications.
UV is encouraged to be used to eliminate or reduce chlorine resistant pathogens, especially the protozoan
Cryptosporidium.
1. UV equipment and electrical components and wiring shall comply with the requirements of the
National Electrical Code and the manufacturer shall provide a certification of conformance to the
department.
2. UV equipment shall meet UL standards and shall be electrically interlocked with recirculation pump(s)
on all pools and with feature pump(s) on an IWF such that when the UV equipment fails to produce the
required dosage as measured by an automated sensor, the feature pump(s) are disabled so the water features
do not operate.
3. UV equipment shall be validated by a capable party that it delivers the required and predicted UV dose
at the validated flow, lamp power and water UV transmittance conditions, and has complied with all
professional practices summarized in the USEPA Ultraviolet Disinfectant Guidance Manual dated
November, 2006, which is publication number EPA 815-R-06-007 available from the department at
http://www.floridashealth.org/Environme ... index.html or at
http://www.epa.gov/safewater/disinfecti ... idance.pdf.
4. UV equipment shall constantly produce a validated dosage of at least 40 mJ/cm2 (milliJoules per
square centimeter) at the end of lamp life.
5. The UV equipment shall not be located in a side stream flow and shall be located to treat all water
returning to the pool or water features.

 

[chem geek]

If you were interested in the NSF Standard 50 certified UV products, they are listed here. Though not required by your local codes, it at least lists some options for you. Neither of the two recommendations given are listed here, but that's probably because of the costs of getting certification and annual maintenance fees (including random manufacturing plant inspections, etc).

 

[salvationarmy]

I have gotten a a couple of quotes- both are around $12k + installation. Just looked at the warrantee on one of them- it's for a whole year To think that I could spend that much and only have it last a year- not encouraging.