Rinse Water Recycling System Saves Consumption for Blackening Lines

Birchwood Technologies offers the Near-Zero water recycler for use in the company’s Tru Temp low-temperature black oxide finishing lines.

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Birchwood Technologies offers the Near-Zero water recycler for use in the company’s Tru Temp low-temperature black oxide finishing lines. Designed to reduce rinse water consumption by as much as 99 percent, the recycler system enables the user to recycle and reuse process rinse water by filtering out free and emulsified oil and detergent residues while maintaining rinse-water pH at a near-neutral level.

The system enables the recycling and reuse of water in the rinse tanks for about a month, according to the company. At that point the filter media is changed, all three rinse tanks are changed and refilled with clean water, and the monthly cycle starts over. Total water consumption equals 300-500 gallons (a 99-percent reduction).

Designed for Tru Temp process lines of all sizes, the system sets up quickly. According to the company, it can be integrated into most Tru Temp tank lines in only a few minutes. The controls provide an enclosed cabinet with a spill containment base.

This water recycling system is designed to be a useful option for metal finishers in water-restricted areas such as small shops on septic systems, sewer districts that restrict total water volume or plants where the blackening line is located in a warehouse without water/sewer hookups. In all cases, the Near-Zero system can be installed on a new process line or added to an existing line as a retrofit. 

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