The PELLU Metals Removal Process removes all heavy metals from waste water, is not pH sensitive, and is highly efficient even in the presence of interfering agents (EDTA, ammonia, sulfates, phosphates, etc.). It encompasses the concepts of pollution prevention, waste minimization, and resource recycling.

1. Wastewater is pumped from a holding tank or directly from the process line into the 80 gallon batch reaction tank.
    
2. The semi-automated system is initiated by the operator when prompted by the display.
    
3. When the tank is full, the pH controller begins injecting the PELLU chemical into the reaction tank until the pH reaches the desired setpoint depending upon the metals to be removed.
    
4. Once the pH value is met, the selected polymer for the application is automatically injected into the tank in the correct proportion. The mixer speed increases for a preset time, and then automatically slows to ensure settling.
    
5. The solids are then collected in a dual filter bag system that retain the solid floc until final disposal.
    
6. Treated water collects in the bottom of the unit and is automatically transferred by the sump pump to the sewer or to a holding tank for final discharge.

• The process is highly cost effective.
• One pH adjustment without multiple steps and multiple chemicals.
• The reaction is very fast, virtually eliminating residence time.
• The speed of the reaction eliminates large holding tanks, saving prime real estate space.
• ALL heavy metals in a waste stream can be removed in one treatment step.
• Sludge volume is 30%-50% less than seen with traditional chemicals.
• Sludge is easy to dewater with other aids.
• There is no sulfur smell with PELLU.
• Elimination of the intermediate step of reducing hexavalent chrome to trivalent chrome.
• Chelated and complexed metals, including meta-cyanide complexes are treated, eliminating the safety concerns of hydrogen cyanide gas and other noxious emissions in the plant.

PELLU Process Features

• Semi-automatic equipment is perfect for small batches.
• Hauling of waste is reduced or eliminated with local treatment.
• PELLU works as a batch or continuous process.
• System is simple enough for untrained operators to handle.
• pH control eliminates complicated chemical reactions.
• Waste streams can be mixed and combined for a single treatment.
• Can be used as a stand alone system for hard-to-treat waste streams.
• System control can be manual, semi-automatic, or fully automatic.
• 5 to 1000 gallons per minute (gpm) throughput is possible.