Concentrated Acid Waste Collection Systems for solar cell manufacturing receive batch dumps of concentrated acid waste water (typically > 10% strength), and then transfer the waste to drums or totes for off site disposal. The acids present may be Hydrofluoric, Hydrochloric or Nitric. The drum cabinet is equipped with load cells to automatically stop the filling operation once a drum is full. This eliminates the need for a level sensor to be placed in the drum by an operator. Both the receiving tank and the drum cabinet are fully contained for personnel safety.

Design Criteria (standard system):

• Receiving Tank Capacity: 275 gal molded PE
• Transfer Pump: One (1) 1-inch diameter air-operated diaphragm (AOD) type
• Drum Cabinet Capacity: One (1) 55 gal Chemical Drum
• Secondary Containment: Welded PP

• Larger Receiving Tank Capacity
• Two (2) Drum Cabinets
• Metering Pump transfer to separate HF Treatment or AWN system

Solvent Waste Collection Systems receive batch dumps of DI Water that contain appreciable amounts of flammable solvents, usually Isopropyl Alcohol (IPA). The solvent waste is automatically transferred into drums for off site disposal. These fire-safe systems are fabricated with stainless steel and either explosion–proof or intrinsically safe electrical components. Solvent waste may be delivered directly to the drums or to a receiving tank which will automatically transfer to drums, depending on the facility process requirements.

• Fire-rated metal storage cabinet
• Drum Cabinet Capacity: One (1) 55 gal Chemical Drum
• Transfer Pump: One (1) stainless steel AOD pump with Teflon wetted parts

• Receiving Tank with or without Secondary Containment
• Two (2) Drum Cabinets

• Class 1/Div II or Intrinsically Safe construction
• Influent permissive dry contacts for interlocks with upstream equipment
• Common trouble alarm dry contacts for remote alarm notification
• Drum filling controlled load cells or ultrasonic level transmitter