Birm Media

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A Versatile Media for Water Filtration Applications

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EQPT

Riyadh, Saudi Arabia

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Clack Corporation sells BIRM, a multifunctional filtration medium for a range of water treatment uses. Potential advantages include the elimination of iron, manganese, and arsenic. To learn more about its capabilities, let's examine its features and specifications.
Extra Information:

Pretreatment is necessary for water that has low D.O., low pH, or certain pollutants.
Raw and processed water must be periodically monitored.
Not to be used with water that is microbiologically hazardous.

                                                            Media
                                                            Manganese dioxide coating bonded to a lightweight silica substrate
                                                        
                                                            Organic Matter
                                                            Less than 5 ppm TOC
                                                        
                                                            Color
                                                            Black
                                                        
                                                            Bulk Density
                                                            36-38 lbs./cu. ft.
                                                        
                                                            Specific Gravity
                                                            2.0 gm/cc
                                                        
                                                            Mesh Size
                                                            12 x 50
                                                        
                                                            Effective Size
                                                            0.48 mm
                                                        
                                                            Uniformity Coefficient
                                                            2.7
                                                        
                                                            Water pH range
                                                            6.8-9.0
                                                        
                                                            Oil
                                                            Not present
                                                        
                                                            Alkalinity
                                                            Greater than two times the combined sulfate and chloride concentration
                                                        
                                                            Polyphosphates
                                                            Not present
                                                        
                                                            Temperature Range
                                                            35-100°F (2-38°C)
                                                        
                                                            Dissolved Oxygen (D.O.) content
                                                            Must be equal to at least 15% of the iron and 29% of the manganese content
                                                        
                                                            Bed depth
                                                            30-36 inches
                                                        
                                                            Maximum Pressure Drop
                                                            2-4 psi (14-28 kPa)
                                                        
                                                            Freeboard
                                                            Minimum 50% of bed depth
                                                        
                                                            Service flow rate
                                                            3.5-5 gpm/sq. ft. (higher rates possible with proper conditions)
                                                        
                                                            Backwash rate
                                                            10-12 gpm/sq. ft.
                                                        
                                                            Rinse Rate
                                                            At service flow rate
                                                        
                                                            Backwash Bed Expansion
                                                            20-40% of bed depth
                                                        
                                                            Free chlorine concentration
                                                            Less than 0.5 ppm
                                                        
                                                            Hydrogen Sulfide
                                                            Must be removed before contact with Birm media

Applications of Birm Media:

Reduction of manganese and dissolved iron in raw water sources.
Suitable for pressurized or gravity-fed systems.

Principal Benefits of Birm Media:

Removes manganese and iron under the right circumstances.
Regeneration doesn't require any chemicals, with the possible exception of pretreatment.
Low cost of operation.
Durable and long-lasting substance.
Broad variety of temperatures.
Lightweight: uses less water for backwash.