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Chlorination Iron Filters
| Remove iron. Kill iron bacteria and odors. Enjoy low maintenance. Get great, crystal clear water with a Chlorinator and Iron Filter Combination System! If your well water contains sulfur odors, and/or iron bacteria consider a low cost chlorinator and iron filter combination. A simple chlorinator system followed by a MangOX or Greensand-Plus iron filter not only does a great job with iron, but also effectively destroys iron bacteria and odors. The system can be adjusted so no chlorine tastes or odors are present after the iron filter, or an activated carbon backwash filter can be used to completely remove all trace of chlorine. |
We wrote the book on treating iron, manganese and odors! Get your copy FREE (normally $19), and a COUPON for $25 off, for a limited time. Through Jan 31.  |
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| Questions? Talk to one our WQA Certified Water Specialists at 888-600-5426 or use our Fast System Selector Form and get a quick response. |
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| How Do Chlorinators Help Iron Removal? | |||
By chlorinating the water prior to a MangOX or Greensand iron filter the water is pre-treated so various contaminants in the water that can be oxidized (such as iron, manganese and tannin) are oxidized prior to the iron filter. |
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The Importance of pH
If your well water has a pH of less than 7.0, it can be considered acidic. Iron filters don’t work well if the pH is too acidic. A liquid bleach chlorinator system will raise your pH a small amount so if your well water has a pH of 6.5 - 7.0 often no neutralizer is required before the iron filter. |
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Chlorinator Diagram with MangOX Filtration
Remove iron, manganese, sulfur, and sediment
| Frequently Asked Questions About Using Chlorine to Treat Iron Q. Why do iron filters work better when the water is pre-chlorinated? A. Iron filters work by oxidizing (rusting) the iron and then filtering it out. Rust is one type of oxidation. When water is underground in most wells, it is in a clear, also known as 'ferrous' or clear water iron. Iron filters must take this clear iron and transform it to rust or ferric iron in the process known as oxidation. Chlorine is a powerful oxidizer, and by adding very small amounts to water before the iron filter, the iron filter can work much better and remove much high levels of iron, manganese and odors. Q. What is the difference between Greensand, and the MangOX (Filox, Pyrolox) filters? A. Greensand are coated with manganese oxide. The coating eventually wears off. MangOX, Filox, and Pyrolox are solid manganese dioxide mineral media. There is no coating to wear off and the media lasts much longer. Since it is a solid media, it is much heavier and needs a stronger backwash flow to properly wash the iron and sediment out during the backwash and rinse cycles. Q. What is the best way to eliminate odors and iron bacteria? A. Chlorine injection followed by a small contact tank, then a Greensand or MangOX iron filter is an excellent method to elminate iron bacteria and various odors including hydrogen sulfide ("rotten-egg") odor. Q. Isn't chlorine toxic and cancer-causing? A. High levels of chlorine are toxic, but low levels (as found in most municipally treated water) are not acutely toxic. There is controversy over the actual carcinogenic effects of long-term low exposure to chlorine. It is also cheap and easy to remove chlorine residual in the water for showering and drinking. Most of the toxicity associated with chlorine is when it is used with surface waters high in organic material, and chemicals called THMs are formed. This is much less of an issue with groundwater. Q. Won't I smell and taste the chlorine? A. With our precision chlorine bleach metering pumps, you will be able to quickly and easily adjust the chlorinator so that the low levels injected degrade and dissappear as the water flows through the MangOX or Greensand filter. If you use a solid pellet chlorinator, a carbon backwash filter system is recommended, after the iron filter. Q. When should I use a chlorine pellet feeder, as opposed to a liquid chlorine bleach injection system? A. A down-the-well pellet feeder, which drops small chlorine pellets down the well, every time the well pump runs, can be a good solution if you have no holding tank or retention tank, which is usually required for liquid chlorine injection. Pellet feeders can be ineffective if your well has wire protectors, or other obstructions that block the pellets from falling. If your well has a small access plug on the top of it, you can obtain some pellets and drop a few down the well to see if they fall into the water, which you can usually hear pretty clearly. Most of our clients using chlorination, use liquid sodium hypochlorite (household bleach) injection, but pellets are useful in some cases. Q. What about in-line solid pellet feeders? Are those a good alternative to liquid chlorinators? A. In-line pellet feeders are lower in cost but the cost of the pellets are higher than using chlorine bleach. One important consideration is that the amount of chlorine that the in-line chlorine pellet feeders inject cannot be as easily controlled as with liquid metering pump chlorinators. This is easily overcome if a carbon backwash filter tank is used, after the chlorinator. Q. My community system or small shared well system periodically has coliform bacteria problems, but the other residents on the system do not want to, or have no plans to chlorinate. Is there anything I can do, just at my own home? A. Yes, you can install a proportionally-fed chlorine injection system, which injects more or less based on the flow rate of your water. Our standard chlorinator systems are installed before the pressure tank where the water is flowing more or less at the same flow rate, so a proportional-fed is not required. Another option if your water is clear, and low in iron and manganese, you could install an ultraviolet sterilizer right at your home, to disinfect only the water that comes directly to your house. Q. I have 5.0 ppm of iron, some manganese, and mildly bad sulfur odor in my cold water. My toilet flush tank looks orange and seems to have slimy strings of fuzzy iron bacteria growing on the sides. Which iron filter is best for my water? A. For best results, a chlorination injection system followed by a MangOX or Greensand iron filter would be best. MangOX lasts longer than greensand and works great with a chlorine feed. The chlorine can be adjusted so it degrades as it flows through the iron filter, so you don't have the taste or smell of chlorine in the water. Q. If I use a chlorinator with a Greensand iron filter, will I still need to use potassium permanganate? A. Greensand filters usually are regenerated with potassium permanganate powder. If you use a chlorine injector and small contact tank, no permanganate is required. Q. I use a chlorinator already to control odor and disinfect the water, but I want to use an iron filter. Which one is best? A. The MangOX type or the Greensand filters would work the best, and no potassium permanganate would be required. Q. I have very severe water. My iron is over 10 ppm, I have high manganese, and a terrible hydrogen sulfide problem. Which one should I use? A. For some types of very severe water, we recommend injeciton of chlorine or hydrogen peroxide, depending on the water chemistry, followed by a contact retention tank, then a MangOX iron filter, and in some cases an additional carbon backwash filter and a water softener. Contact us for a fast quotation for this type of system. Q. I have 3.0 to 5.0 ppm of iron, manganese and some hydrogen sulfide odor in the cold water. I looked inside my toilet flush, and I see the long strings or slimy presence of iron bacteria. Can I use a MangOX filter? A. Yes, as long as you have enough backwash flow to properly backwash the MangOX filter media, it would work fine. If your water has iron bacteria in it, you may experience some fouling of the filter media. One advantage of the greensand filters is that the potassium permanganate will kill any iron bacteria that may foul the filter media. Q. I would like to use the Greensand‐Plus filter with a chlorine injection system, but I don't want chlorine in my house. What can I do? A. The chlorine can be adjusted so it degrades as it flows through the iron filter, so you don't have the taste or smell of chlorine in the water. You can also use a backwashing carbon filter after the Greensand filter to remove all trace of chlorine before it enters the house. Why buy your chlorination system from us? Why use a home well chlorinator? |
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 The chlorinator/iron filter system is working very well. Thanks for your expertise and help in setting it up. I didn't realize how essential the chlorine was to fix our water problems. I set the chlorinator up first, and adjusted it for 0.5 ppm free chlorine residual. We're very happy with the system, and really appreciate your help. Best wishes, Chaga Pacific Hermitage
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