PT CAHAYA MEGA BUANA

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BIRM
BIRM
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Last Updated
17 Oct 2020
Country Origin
Indonesia
Minimum Order
1 ZAK

Specification of

Birm is a trademark name of the Clack Corp. These iron filters use a type of granular filter media called “Birm”. It is manufactured from a type of natural pumice mineral coated with manganese oxide.

As the water flows through the filter tank containing Birm media, a reaction occurs where the dissolved oxygen and the dissolved ferrous iron compounds form an insoluble ferric hydroxide. In plain English, as water containing iron flows through the media, if there is enough oxygen in the water, the Birm causes the iron to form rust, or solid iron particles. After these rust particles get trapped in the filter media, once or twice a week they are automatically backwashed out to drain, and the filter media is ready to filter again.

The size of the filter system is directly proportional to the flow rate of the water, in gallons per minute. The higher the flow rate, the larger the system required. See our table for the flow rates for Birm iron filters.

The water must have a pH of 7.0 to 9.0. In addition, the dissolved oxygen content must be at least 15% of the iron or manganese content. For most wells deeper than 50 feet, an air injector must be used to introduce some additional oxygen in the water prior to the Birm filter. If the water being filtered is water from an open storage tank or spring, no additional air injection is usually required.

 

The water should contain no tannins, chlorine, oil or hydrogen sulfide (rotten egg odor). For water with any of these items we recommend the greensand filter systems. A inexpensive water test of your raw well water is highly recommended before purchasing these systems.

Do not use these iron filters when hydrogen sulfide (a natural toxic gas formed by iron and sulfur bacteria) is present. Depending on the levels of hydrogen sulfide gas, , it is better to use chlorination or ozone, followed by greensand or greensand blend iron filters if hydrogen sulfide and/or iron bacteria is present.

These iron filters should not be used if the water has a chlorine residual. De-chlorinate before the iron filter using a carbon filter, or better yet, use the greensand type of iron filter.

These Birm filters iron remove Generally up to 10 ppm.

The control valve uses only about 15 watts of energy to run the timer and backwash valve.

Generally we do not recommend Birm filters where have very high manganese (greater than .05 PPM). For manganese removal to be effective, the pH must be between 8.2 and 9.0. It would be better to use a greensand filter to reduce manganese.

Under the right conditions there is little maintenance. This is the great advantage of the Birm filters. If you have water with a pH of 7.0 to 8.0, no odor or tannin present, and you are not using chlorine, Birm lasts for 5 to 10 years with little maintenance.In some cases depending on how hard the water is, the control valve backwash piston needs to be replaced every 3 to 5 years, but this is also easy to do by anyone. No special tools are required. The systems uses no salt or chemicals and there are no filter cartridges to replace.

When properly sized, the system produces a very low pressure drop at service flow rates, usually around 5 psi.

The backwash water is non toxic and can be routed to the septic tank with no problem. It can also be routed to landscaping, although the backwash is usually very dark and orange, and will stain surfaces.

The filter media will last for 4 to 8 years depending on usage and conditions. It is easily replaced.

To choose an iron filter system for you choosing an iron filter system for my application application You should first have your water tested, and then contact our technical staff for help on selecting the best iron filter system for your application. Also see our Custom Water System Design Questionnaire which makes it easy to help you select a system.

FOR MORE INFORMATION PLEASE CONTACT US

PT. CAHAYA MEGA BUANA

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