how to correctly size a uv water treatment system

by Bettye Mante Published 3 years ago Updated 2 years ago

To determine the correct size for a UV treatment system one needs to know the flow-rate and the UV transmittance (UVT) in the water to be treated. When these are known, the UV size can be calculated based on experience and model predictions. The UVT is a measure to determine how much UV energy you will lose in your fluid 10mm away from your lamp.

Flow rate guidelines for a Whole-Home UV Water Sterilizer System:

1 Bathroom: 6 gallons per minute flow rate.
2 Bathrooms: 9 gallons per minute flow rate.
3 Bathrooms: 12 gallons per minute flow rate.
4 Bathrooms: 15 gallons per minute flow rate.
5 Bathrooms: 18 gallons per minute flow rate.

Full Answer

Should I oversize my UV water treatment system?

For proper protection, most whole-house UV systems have a UV dosage rating of 30 millijoules of UV per square centimeter (mj/cm 2 ). This dosage will protect against a wide array of dangerous microbes. If the system you install is under flow-rate capacity, your home’s water may not be treated effectively by the system’s UV lights.

How do you size a UV system?

When determining the space needed for installing a UV system, make sure to allow at least double the size of the UV system dimensions so that there is plenty of room for replacing the lamp and sleeve. Also, consider the space needed for …

How is water quality measured for UV disinfection?

Live. •. UV systems are basically sized using two and sometimes three parameters. 1) The maximum flow rate of water that will be flowing through the UV. 2) The size of plumbing connected to the UV. 3) The degree of color in your family’s water.

How do I choose the right UV light treatment system?

12 Basic Steps in a Bioassay Hire a third party to independently test the UV system Select a microorganism that is UV resistant, not pathogenic and easy to grow Irradiate the microorganisms with exact UV doses to create a calibration curve of UV dose versus log inactivation Set-up a UV system to simulate worst case conditions of the lamps and water

How do you size a water filtration system?

Count your appliances and get out your calculator

Bathtub: 4 to 8 GPM.
Washing machine: 4 to 5 GPM.
Shower: 2.5 to 5 GPM.
Toilet: 2.2 to 5 GPM.
Dishwasher: 2 to 3 GPM.
Faucet: 2.5 to 3 GPM.

Sep 7, 2019

What do you need to take into account when sizing a UV system?

The selection of a system of the proper capacity is accomplished by consideration of three variables: the maximum flow rate, dose required and UV transmittance (or UVT) of the water.May 14, 2004

How do I choose a UV sterilizer?

The greater the UV power per unit of water, the better the sterilization effect; the greater the flow rate of the water through the UV lamp sterilizer, the greater the total sterilization effect; the greater the UV254 transmittance, the better the sterilization effect.Jul 7, 2020

How do I choose the right water filtration system?

While choosing a filtration system, it's imperative for you to check the efficiency of the carbon. Some only filter out chlorine, bad smell, and bad taste, while others can remove VOC organic compounds and radon. Also, carbon will not work for inorganic compounds like chromium, heavy metals, arsenic, and fluoride.Sep 30, 2020

How do you size a UV light?

The main difference between the two is the strength of the UV light compared to the amount of water in your pond. As a rule of thumb, use 10W of UV light per 1000 gallons for 'clarification', and 30 watts of UV light per 1000 gallons for 'sterilization'.

How many gpm water filter do I need?

Service Flow Rates for Whole House Filter Sizing

Number of Residents	1-2 Bathrooms	3-4 Bathrooms
1-2	5 GPM	10 GPM
2-4	7 GPM	12 GPM
5-6	10 GPM	14 GPM
7-8	10 GPM	14 GPM

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What should I look for in a UV water filter?

You'll need to make sure that your existing water meets the following requirements:

Iron < 0.3 ppm.
Hardness < 7 gpg.
Turbidity <1 NTU.
Manganese < 0.05 ppm.
Tannins < 0.1 ppm.
UV Transmittance > 75%

Jan 24, 2021

How much power does a UV water filter use?

WWTFs using low-pressure UV lamps consume 100 to 250 kWh per million gallons (MG) of wastewater treated. Medium-pressure systems require 460 to 560 kWh/MG. Chlorine gas system energy use ranges from 60 to 250 kWh/MG, depending on the chlorine dose delivered.

How much does a UV water system cost?

between $800 and $2,000

UV Disinfection

With this type of water purification system, water passes under UV lights, which kill bacteria and other microorganisms. A UV disinfection system is not effective in removing sediment from water. Expect to pay between $800 and $2,000.Feb 23, 2021

Should you Remineralize RO water?

Important for Human Health. Remineralizing your RO water allows you to regain those micronutrients while ensuring that your water is free of contaminants. The major micronutrients contained in mineral water are calcium, magnesium and trace minerals.May 25, 2021

What filter is best for well water?

The 9 Best Whole House Water Filters for Well Water

iSpring WGB32BM Whole House Water Filter – Best Overall. ...
Aquaboon Whole House Well Water Filter System – Best Value. ...
Aquasana EQ-WELL-UV-PRO-AST Water Filter System – Premium Choice. ...
Express Water WH300SCKS Whole House Water Filter.

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Jan 20, 2022

What type of water filter is best?

Reverse osmosis filters are top of the line for removing a large percentage of contaminants out of the water, potentially including dangerous waterborne bacteria. The filters work by pushing water through the reverse osmosis membrane using pressure.

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