News - Press Releases

New Near-Zero™ Water Recycler Introduced For The Tru Temp Black Oxide Process

Birchwood Technologies announces introduction of the new Near-Zero™ water recycler for use in new and existing Tru Temp® low temperature black oxide finishing lines.

Designed to reduce rinse water consumption up to 99 percent, the Near-Zero system allows the user to recycle and re-use process rinse water by filtering out free and emulsified oil and detergent residues. The system maintains rinse water pH at a near neutral level for continual reuse.

Near-Zero Water Recycler

New Near-Zero Water Recycler for Tru Temp process lines collects rinse water from rinse tanks filtering out free and emulsified oil and detergent residues. This reduces rinse water consumption by 99 percent.

The Near-Zero system provides Tru Temp black oxide process users a cost-effective way to conserve water, particularly in areas where water use is restricted or where normal water and city sewer services are not easily accessed.

For example, a normal Tru Temp black oxide process line with 100 gallon tanks utilizes three flowing rinse tanks, each requiring a flow rate of about two gallons of water per minute. When operated for one shift per day for a month, the total water consumption is about 63,000 gallons – all going to city sewer as non-hazardous discharge. Though the actual cost of this volume of water is usually modest, a flowing rinse system may not be a viable option for all users.

The Near-Zero Water Recycler allows the user to recycle and re-use the water in the rinse tanks for about a month. Then the Near-Zero filter media is changed, and all three rinse tanks are changed and re-filled with clean water, and the monthly cycle starts over. Total water consumption equals 300-500 gallons – a 99% reduction.

The Near-Zero water recycling system is designed for Tru Temp process lines of all sizes and is completely pre-engineered for fast setup. The Near-Zero system has easy to operate controls and has an enclosed cabinet with a spill containment base. The system can be integrated into most Tru Temp tank lines in only a few minutes.

The Near-Zero Water Recycling System is an important new option for metal finishers in water-restricted areas. These include small shops on septic systems, sewer districts that restrict total water volume, or in plants where the blackening line is located in a warehouse without water/sewer hookups. In all instances, the Near-Zero Water Recycling System can be installed on a new process line, or added to an existing line as a retrofit. The new system can make the difference between successful in-house blackening and no blackening at all.