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Wastewater Neutralization Systems

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Waste Neutralization
W2 Systems has been designing and building industry leading waste neutralization equipment for some of the top semiconductor and life sciences companies today. If you’re in such an industry, then you know that the wastewater produced by semiconductor fabrication can be rife with a range of harmful chemicals, such as, arsenic, salts, alkalis, acids, solvents, antimony, and other pure organic and inorganic compounds. If the goal is to simply dump the leftover waste, it can’t be done while remaining in accordance with the EPA’s specifications without an adequate wastewater neutralization system. Industrial wastewater neutralization systems are sometimes referred to as pH neutralization systems—this is because the goal when implementing waste pH neutralization is to take the alkali and acidic wastewater streams and mix them together thoroughly until the wastewater is closer to a base pH and ready to be dumped entirely. If the pH of the wastewater is not within an acceptable range, then additional chemicals will have to be added to ensure the wastewater reaches a desirable pH level.

 

After years of experience, we have come to design the high-quality systems used today by utilizing leading technologies and new, user-friendly wastewater pH adjustment designs. Beyond providing the latest and greatest technology, we also pride ourselves on offering expert technical support. We offer an exceptional line of systems to fit your every need! Regardless of the amount of waste that requires daily neutralization, we have a wastewater neutralization system perfect for the job. And whether you require the most flexible design, something capable of fitting in the smallest possible space, or the most advanced technology available today, we’ll go through the various options with you to determine which systems will be best for your current operation.
Our systems include:

  • Integrated secondary containment tanks
  • Our designs are fully compatible with all chemicals
  • Fully enclosed system design, including the pumps
  • Best-in-class efficiency designs
  • The most energy- and chemical-efficient methods of treatment
  • Integrated, user-friendly controls with visual schematics and touch screen adjustments
  • Flexible design
  • Integrated tanks, monitoring systems and sampling tanks
  • Fully customizable design
Simplex Batch Systems
Model Flow Compartment Size Overall Size
1BNS-5 5 gpm 2.5′ x 2.5′ x 4’h 4′ x 4′ x 4’h
1BNS-10 10 gpm 4′ x 3′ x 4’h 4′ x 4′ x 4’h
1BNS-15 15 gpm 4′ x 5′ x 4’h 4′ x 6′ x 4’h
Duplex Gravity Flow Systems
Model Flow Compartment Size Overall Size
WNS2-10 10 gpm 4′ x 2′ x 4’h 4′ x 8′ x 4’h
WNS2-20 20 gpm 4′ x 4′ x 4’h 4′ x 10′ x 4’h
WNS2-30 30 gpm 4′ x 5′ x 4’h 4′ x 12′ x 4’h
WNS2-40 40 gpm 4′ x 6′ x 5’h 4′ x 13′ x 5’h
WNS2-50 50 gpm 6′ x 5′ x 5’h 6′ x 11′ x 5’h
WNS2-60 60 gpm 6′ x 6′ x 5’h 6′ x 13′ x 5’h
WNS2-75 75 gpm 6′ x 7′ x 6’h 6′ x 15′ x 6’h
WNS2-90 90 gpm 7′ x 7′ x 6’h 7′ x 15′ x 6’h
Triplex Gravity Flow Systems
Model Flow Compartment Size Overall Size
WNS3-20 20 gpm 4′ x 3′ x 4’h 4′ x 12′ x 4’h
WNS3-30 30 gpm 4′ x 4′ x 4’h 4′ x 14′ x 4’h
WNS3-40 40 gpm 4′ x 5′ x 4’h 4′ x 16′ x 4’h
WNS3-50 50 gpm 4′ x 5′ x 6’h 4′ x 16′ x 6’h
WNS3-60 60 gpm 6′ x 5′ x 6’h 6′ x 16′ x 6’h
WNS3-75 75 gpm 6′ x 6′ x 6’h 6′ x 18′ x 6’h
WNS3-90 100 gpm 7′ x 6′ x 6’h 7′ x 18′ x 6’h
Options:

  • R- Reject pH out-of-spec. system
  • S- Surge tank addition
  • VI-valve Injection
  • PI-Pump Injection
  • Chemical Day tanks with distribution or injection pumps
  • Touch Screen Upgrade
  • BMS Connection or Ethernet Info Link
  • Redundant Monitoring
  • Recorder Upgrade
  • Fully Customizable System
W2 Systems wastewater neutralization systems are designed to treat influent wastewater with pH from 0.1 to 13.99 pH units. Standard neutralization systems can treat up to 90 GPM with 48 minutes of retention. W2 has over twenty neutralization system installations including at:

Applied Signal Micron Technology
SIGEN Micro Display
AXON Nakano Foods
NDI – Alpha Division Magic Technologies

Our large range of multi-compartment neutralization systems treat influent streams with wide flow and pH
variations.

Standard WN package neutralization systems have simplex, duplex and triplex compartments-

B1 Series – Batch/Simplex Flow, up to 600 gallons retention volume
F2 Series – Duplex Flow, up to 4400 gallons retention volume
F3 Series – Triplex Flow, up to 4700 gallons retention volume

With Acid and Caustic Feed Tank/Pumps systems sized to treat all influent wastewater conditions.
Construction Features –

  • Primary and Secondary (Containment) Tanks
  • Fully-Welded 1/2″White Polypropylene – FM Approved
  • Hinged Tank Cover with clear view-port, drip berm and drains
  • 316 SS bolts (Hastelloy available)
  • Primary Tank mechanically attached to Containment
  • System overall height less than 6 feet

 

 Chemical Feed System Features –

  • Caustic (30%)Tanks sized 100, 200 and 350 gallons
  • Sulfuric Acid (up tp 93%)Tanks sized 15 and 100 gallons
  • Each tank has integral secondary containment
  • Duplex acid and caustic feed pumps
  • For low feed rates – PLC-controlled Motor diaphragm pumps
  • For high feed rates – Recirc flow with PLC-controlled modulating feed valves
  • All chem piping double-contained and FAT

 
Indicators and Controls

  • Pump Hand/Off/Auto switches and running lights
  • pH Analyzer in each compartment
  • Effluent pH Analyzer/Indicator/recorder
  • Effluent Flow Indicator/total/ recorder
  • Compartment level control/alarms –
    • Low-low level switch pump shutoff
    • Start pH adjust level switch
    • High level local alarm
  • Containment switch activates local alarm
  • 2 Acid/Caustic control/alarm levels –
    • Low level switch local alarm
    • Containment switch local alarm
  • Optional dry contacts for remote monitoring
    • Effluent pH out-of-spec alarm
    • Acid or Caustic low level alarm
    • Containment level alarm
 Control System and Power Supply

The control system monitors the solution pH in each compartment and actuates and controls the caustic or acid feed systems. Course and/or fine feed depends on how far the batch pH is from the setpoint value.

The effluent pH is indicated and recorded, and local alarms are actuated if the pH falls outside the setpoint limits.

  • UL-listed NEMA 4X enclosure
  • Motor starters with thermal overload relays
  • 110 VAC, 208 VAC or 240 VAC 3-phase
  • PLC can be field- programmed via RS232 port
  • All power and controls pre-wired with FAT
  • Main safety disconnect switch by others
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