Clack Birm Filter – Trusted Industrial & Commercial Solution

A8006

Birm: A Versatile Media for Water Filtration Applications

BIRM, offered by Clack Corporation, is a multipurpose filtration media for various water treatment applications. It boasts potential benefits like removal of iron, manganese, and arsenic. Let's delve into its specifications and features to understand its capabilities.

Key features

- Advantages:
  - Removes iron and manganese under proper conditions
  - No chemicals required for regeneration (except for pretreatment in some cases)
  - Low operating cost
  - Durable material with long life
  - Wide temperature range
  - Lightweight – reduces backwash water usage
- Applications:
  - Reduction of dissolved iron and manganese from raw water supplies
  - Can be used in gravity-fed or pressurized systems
- Additional Notes:
  - Requires pretreatment for water with low pH, low D.O., or certain contaminants
  - Periodic monitoring of raw and treated water required
  - Not for use with microbiologically unsafe water

Specification

Media: Manganese dioxide coating bonded to a lightweight silica substrate

Color: Black
Physical Properties:
- 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
Operating Conditions:
- Water pH range: 6.8-9.0
- Alkalinity: Greater than two times the combined sulfate and chloride concentration
- 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
Influent and Backwash Limitations:
- Free chlorine concentration: Less than 0.5 ppm
- Hydrogen Sulfide: Must be removed before contact with Birm media
- Oil: Not present
- Polyphosphates: Not present
- Organic Matter: Less than 5 ppm TOC

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Birm: A Versatile Media for Water Filtration Applications