pH Adjustment Systems

pH Neutralization / pH Adjustment Systems for industrial wastewatertreatment 

Custom Chemical Dispense Systems from Wastech



For processes that require precise and complex chemical dispense solutions, Wastech's large in house team of engineers has the experience and skill set required to design and manufacture a fully automated packaged solution tailored specifically to your unique application.

Custom chemical injection, mixing or blending systems are required when process chemicals need to be dispensed in sequencing order, precision flow, or both into process mixing tanks or piping manifolds. 

Wastech's team of engineers can help you design a custom chemical dispense system to fit your needs. Systems can be provided within a custom fabricated thermoplastic or stainless steel cabinet for additional safety and protection. Systems can be provided with either a double-contained chemical supply tank or as a metering pump skid only.  These systems use high quality corrosion-resistant metering pumps to inject chemicals into a process tank or piping manifold.  


Standard System Features

  • UL-Listed control panel
  • NEMA 4 powder coated steel enclosure
  • Relay or PLC-based control system
  • Metering pumps for precise chemical dosing
  • Isolation valves for each metering pump
  • Double containment for systems with holding tanks
  • Run permissive for remote enable/disable
  • Seismic tie-down brackets

Optional System Features

  • Metering pump enclosure for spray protection
  • Proportional injection based on flow
  • Backpressure regulator
  • Pressure relief valve for over-pressurization protection
  • Pulsation dampener for pump discharge
  • Calibration column for pump calibration
  • PVDF, PFA, and PTFE piping and tubing



System Examples


Sulfuric Acid Chemical Dispense System:

Customer wanted a safe and effective method of injecting 93% sulfuric acid into an air stripper feed stream to reduce the negative effects of scaling and the excessive maintenance hours produced. 

Wastech was able to meet the client's request by providing a fully custom engineered and automated PLC based chemical injection system housed in a chemically resistant polypropylene cabinet to provide operator splash protection from the potential hazards of sulfuric acid burns.  Wastech employed the use of inline pH measurement and injection into PVDF piping to provide compatibility with the sulfuric acid stream.


            Automated Bulk Tote Switchover with Metering Pump Cabinet:


Customer turned to Wastech to supply an automated bulk chemical delivery system that would inject chemical into various processes within the facility from several storage totes. The chemical dispense system detects the liquid level within supply totes and determines when to automatically switch totes in order to ensure continuous operation of facility processes, eliminating downtime due to chemical tote replacement.

Wastech's customized control system was designed to communicate with the facility management system to alert operators to replace and refill the empty chemical supply totes prior to chemical supply failures which can lead to process error. The metering pumps where installed within a custom welded polypropylene enclosure fitted with leak detection to meet stringent secondary containment requirements.

Extensive Controls & Monitoring Packages

Monitoring requirements available include leak detection, access security, flow, pressure, and temperature. System enclosures may be constructed from thermal plastic or stainless steel, and can be encased in a cabinet or mounted directly on the pump skid.  Flow meters are wet calibrated and I/O tested.   In addition, Wastech chemical dispense units come standard with an intuitive and user-friendly HMI package.  Some of the standard features include:

  • Main screen for easy navigation to system status and settings screens
  • Status screens covering all equipment and instruments installed on the system
  • Standard color coding for equipment status (i.e. GREEN for ON, RED for fault, etc.)
  • Settings screens covering all user-adjustable parameters on the system
  • Hand-Off-Auto (HOA) screens to manually control equipment when performing maintenance and troubleshooting
  • Multi-level login and password protection to prevent inadvertent changes to critical system settings
  • Alarm and alarm history screens with date and time stamp for each alarm
  • Trending and data logging for batch and continuous pH, fluoride, and heavy metal systems
  • Calibration toggle buttons to direct PLC bypass sensor measurements during calibration
  • Ethernet connection for remote system monitoring and logging


More About Wastech
Wastech Controls and Engineering, Inc. is a leader in process integration, engineering and manufacturing of fully automated industrial process systems. Wastech's core strengths are its people and their experience in process oriented industries. Wastech directly employs all the engineering disciplines required to thoroughly design and commission the systems it develops. Our process, mechanical, electrical and control system engineers come from diverse backgrounds with a range of experience from facility design, manufacturing and construction that enable us to tailor our systems to meet the specific needs of our clients.
Wastech's highly skilled fabricators and assemblers are competent in welding all types of plastic, assembly of piping and equipment, and installation of analytical instruments. Our panel fabrication shop is certified for UL 508A and UL 698A industrial control panels, and is unrivaled in build quality. Wastech is a certified member of the Control Systems Integrators Association (CSIA). Wastech has an unparalleled and distinguished history of customer service and support for many years following systems start and commissioning. Wastech is committed to partnering with our customers during the sales, manufacturing and after sales cycles.
Check out Wastech's complete line of industrial engineered process systems
pH Adjustment Systems
Pump Lift Stations
Collection Cabinets
Chemical Dispense
Process Chilled Water Systems
Heavy Metal Removal Systems
Fluoride Removal Systems
Custom Process Skid
For more information about Wastech's products and services, please call (818) 998-3500 or email us at This email address is being protected from spambots. You need JavaScript enabled to view it..

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