pH Adjustment Systems

pH Neutralization / pH Adjustment Systems for industrial wastewatertreatment 

Mail 04 2004

Acid Neutralization Options

Options can make all the difference!  Wastech OMEGA neutralization packages are only limited by your imagination.
For more information, see

  1. Both active and passive systems are available:
    1. Active uses metering pumps with NaOH (caustic) or H2SO4 (sulfuric acid).
    2. Passive uses CaCO3 (calcium carbonate or limestone chips).
  2. The system can be a batch treatment system or a continuous treatment system.
  3. One, two or three-stage active systems are possible (each with a separate set of metering pumps).
  4. Surge tanks or equalization tanks can be included.
  5. CO2 gas neutralization for high pH applications instead of liquid acid (gas forms carbonic acid when combined with water).
  6. Strong acid (0-2 pH) neutralization for laboratories.
  7. Limestone systems for passive solutions.
  8. Custom tanks for combined sampling and reaction tanks in a small footprint.

Combination fabricated PP
tank showing sample tank.

Relay panel with two Signet ProcessPro controllers and a Wastech Series 800 strip chart recorder. PLC panel with HMI black
& white display screen and
a Wastech Series 800 strip
chart recorder.

Wastech OMEGA neutralization packages can be designed with relay controls or PLC software featuring the Zeus™ control package.

Relay control uses a pH controller to accept the sensor input and turn on or off relay to the metering pump based upon setpoints. GF Signet or Rosemount are normal choices, but any controller specified by the customer can be used.

PLC control requires a display screen and PLC software. When the project involves temperature, flow rate, totalizer, multiple tanks, actuated valves and other inputs, a PLC is the perfect low-cost solution. Over the years, Wastech has developed a PLC control program that handles all neutralization designs. This program allows data logging, internet monitoring, and alarm communication to beepers or cell phones.

Your Next Step

Call Paul Nicolas at Wastech Controls & Engineering!