Methods of Disinfection:
If you've had your water tested at a certified lab and it is determined that you have a positive test result for Coliform or E. Coli, it will be necessary to treat the water to make it safe for human consumption. Or you may just have iron bacteria or sulfur (also bacteria related) and you may want to get rid of those because they are a nuisance.
Sulfur has a smell like rotten eggs and iron bacteria can grow in the well casing and water lines and plug up pumps, softeners and other water treatment systems. There are different ways to treat the water.
We offer different solutions as follows:
The Stenner Chemical Feed Pump:
This method of treatment, using peroxide or chlorine works even on low producing wells or shallow wells. Also because it is installed with a retention tank that allows for contact time to kill the bacteria. The feeder pump is installed on top of a 15 gallon solution tank which draws the chemical from the tank and injects it into the line before the retention tank where it gathers for contact time.
We have had great success with peroxide also, especially with excessive sulfur and/or iron. Peroxide is a 16 times better oxidizer than chlorine and works instantaneously, therefore, needing less contact time and a smaller retention tank than does chlorine.
When using chlorine it is important to occasionally check for a chlorine residual with a pool test kit. To find out if the residual is in a normal range, one would draw approximately 1/2 gallon of water off through the valve located in the line near the top of the retention tank into a container and then fill the small vial included in the pool test kit up to the line. (If there is a water storage tank in use the test kit vial could be dipped into the tank directly or taken from a valve near the tank). Then using the OTO chemical (yellow cover) add 5 drops to the vial of water to test for a chlorine residual. Compare the color of the treated water to the chart shown at the left to see if the level of chlorine in the water sample is in the range of .5 - 1.0. If it is too high or low the solution rate needs to be adjusted. Also if there is excessive sulfur it may be necessary to run a slightly higher chlorine residual to eliminate the strong sulfur odor.
Sometimes a mixing valve is added at the injection point to accelerate the mixing process. It works well if there is excessive sulfur in the water. The Carbon Filter is installed after the Retention Tank to remove chlorine or peroxide for drinking purposes. When using chlorine It is important for the life of the Carbon Filter bed to maintain an appropriate chlorine residual so that the media doesn't break down quickly from too much chlorine going through the system.
Ultra Violet Sterilizer:
The Ultra Violet Sterilizer is used in situations where there is present in the water E. Coli or Coliform bacteria. A certified lab must test for these types of bacteria. If a test result for either produces a positive result with a high plate count a U. V. Light would be necessary to kill the bacteria. An Ultra Violet light is installed on the water line after the pressure tank and can be preceded by an in-line filter housing to filter out sediment before the water passes through the lamp. When the water passes through the lamp it is exposed to ultra violet rays that kill the bateria on contact. The water passes over a quartz sleeve that surrounds and protects the light bulb. If iron bacteria is present in the water the U. V. light is not recommended because it can create a film over the quartz sleeve and the ultra violet rays cannot penetrate the film and effectively kill the bacteria.
The UV System will not remove any odor, sulfer or iron in the water.
This system is used to treat bacteria's ONLY