Friday, February 18, 2011

Research on UV bulbs

I have done some research on UV light bulbs and am adding this information to be considered and reviewed. After reviewing it, I'll have to filter it to see what information is useful. Pardon the pun.

Relevant XO specs:

1. Battery: Capacity: 22.8 Watt-hours (LiFePO4); 16.5 Watt-hours (NiMH);

2. USB: Three Type-A USB-2.0 connectors; up to 1A power supplied (total)

3. From: http://laptop.org/en/laptop/hardware/specs.shtml



UV Sterilizers (What differences between different types?):


1. Google search: http://www.google.com/search?hl=en&source=hp&q=uv
+sterilizer+reviews&aq=4&aqi=g10&aql=&oq=UV+St



2. Aquarium bulbs:


a. http://www.aquariumproductreviews.com/Lifegard-Module-UV/Rainbow-
Lifegard-Module-UV-Lamps-p-1483.html


b. http://www.aquariumproductreviews.com/Lifegard-Module-UV/Lifegard-UV-
Sterilizer-Modules-p-1477.html



3. Other sterilization options:

a. Ozonizers (requires protein skimmers?):

http://www.aquariumproductreviews.com/Ozonizers-c-27.html

b. Reverse Osmosis:

http://www.aquariumproductreviews.com/Reverse-Osmosis-c-32.html


4. Notes about UV sterilization for aquariums (How does this relate to human
consumption?)

http://reviews.ebay.com/UV-Sterilizers-for-Aquariums-Ponds-
Waterfalls_W0QQugidZ10000000003554263


a. A UVC bulb is necessary. UVA and UVB would be ineffective.

b. UVC will have less than 280nm wavelength, and preferably around or below
250nm.

c. The water to be treated must be in range of the light. (What is the
range?)

d. These considerations from the above link. Key points from this link are
useful:

1. Amount of water that is going to be treated (liters or gallons).
2. Where the UV Sterilizer will be placed in the aquarium setup.
3. Power rating of the UV Lamp.
4. Service requirements and servicability of UV Sterilizer unit.

and...

*. Always purchase a Sterilizer with at least 25% more treatment capacity
than the size of the area that is to be treated.
*. It is best to maintain mechanical, chemical, and biological filtration
when using a UV Sterilizer. The "dead" material needs to be removed.

Section 4 all from here.

5. New Technology: LED UV, ideal for use in this project?

a. http://www.springerlink.com/content/668j066286443722/


6. Residential UV sterilizers:

a. http://www.permotrend.com/images/urunler/dokumanlar/permobiostil
%5B1%5D.pdf


b. http://www.qualityuvlamps.com/drinking-water-uv-lamps.asp

c. http://www.johnnyfloodwaterpumps.com/UV.htm

1 comment:

  1. 6. c. The website mentions 254nm wavelength as the best to use, and gives the following helpful information:
    "The main advantages offered by ultra-violet sterilizers can be in conclusion summed up as follows:


    ECOLOGICAL TREATMENT
    Asthe working principle is physical and not chemical, nothing is added to, not taken away from water; in this way there is no formation of any kind of undesired by-products even in the case of overexposures, in the full respect of environment

    IT DOES NOT CHANGE THE ORGANOLEPTIC FEATURES
    When the water treated is for human consumption this aspect is of primary importance, because the UV-C radiation does not change neither its taste nor its smell

    UV-C Dose (254nm) sufficient to eliminate in different percentages (90% - 99% - 99.99%), micro-organisms of various nature:

    QUICK ACTION
    The times of interaction water-radiation are of few seconds; the disaffection directly takes place only during the passage of water. For this it is necessary to install the UV-C unit always after any other treatment equipment, immediately before the utilization tap, in order to avoid possible successive contaminationĂŒs.

    COMPATIBILITY WITH OTHER TECHNOLOGIES
    In order to obtain a complete treatment of water when necessary, it is possible to join a UV-C sterilizer after a softener, a reverse-osmose system with a storage tank, a deironiser or any other treatment equipment.

    SIMPLENESS AND CHEAPNESS
    The simple and tested construction principles make our units safe and trustable; the low consumption (starting of the lamp = few total watts) and the little maintenance required (annual replacement of the lamp) make them very cheap."

    http://www.johnnyfloodwaterpumps.com/UV.htm

    ReplyDelete

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