Alum

Typical Applications:

• Flocculation and Coagulation aid in Water Treatment
• Forming a precipitate with soluble phosphorous that can be settled or filter in waste water treatment

Special Considerations:

• The chemical freezes at -15°C and can start to crystallize at -1.1°C. In cold weather climates, alum should be stored indoors. If outdoor storage is necessary, the tanks and piping should be heat traced and insulated to maintain a temperature between 7 and 15.6°C

Metcon Product Recommendation
For safe, reliable, and accurate metering of Alum, Metcon recommends a complete liquid chemical feed system for storage and metering. 

1. Storage & Handling

• SAFE-Tank Cross link polyethylene storage tanks for storage requirements up to ~33,000 L. These tanks provide 110% containment for safe and a superior resistance with it's antioxidant resistance coating.
• If the chemical will be stored bulk and transferred to day tanks, cross link polyethylene tanks should be used. Metcon can provide transfer pumps and connection assemblies constructed of suitable materials for the chemical, as well as automatic transfer controllers based on tank level.
• To monitor inventory, an ultrasonic level transmitters and electronic scales are the preferred options.

2. Chemical Metering

• A factory engineered, assembled and tested liquid chemical metering system is provided with a choice of either metering pumps (diaphragm/peristaltic) or liquid eductors. The selected metering technology is mounted on wall mounted polyethylene panels or free standing skids (FRP/carbon steel/stainless steel).
• Systems are designed to meet plant requirements for redundancy.
• Metcon provides all of the appurtenances required for safe and accurate metering. This includes pressure relief / back pressure sustaining valves, pressure gauges, pulsation dampeners (when required), flow monitoring devices, calibration columns, isolation valves, and local control panels.

3. Controls & Instrumentation 

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Downloads:

• ARTICLE: From Pump to Pipe: Maximizing Metering Potential
• BULLETIN: Containing Chemicals that react to their environment

*PLEASE NOTE: Metcon is not a chemical manufacturer or supplier. Any technical information expressed is intended for general knowledge and should be confirmed with a chemical manufacturer.