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Neutralization system – Automated pH regulation for wastewater

The neutralization system automatically regulates the pH value of acidic or alkaline wastewater before it enters the company's wastewater network, a municipal wastewater treatment plant , or is discharged directly. Neutralization is controlled by integrated pH sensors and dosing pumps for acid and alkaline solutions – continuously or in batches, depending on the process.


Application

Neutralization systems are used to control the pH value in process wastewater from pharmaceutical production , laboratories , or CIP systems . They prevent exceeding legal limits and enable safe discharge into the sewer system or transfer to downstream wastewater treatment stages.


What the system achieves in operation

  • Automatic pH control for process wastewater
  • Design as a closed stainless steel or plastic system (depending on the chemical load of the medium)
  • Design as a compact skid unit or can be integrated into the wastewater line as a stationary unit
  • CIP-compatible versions with cleaning cycles and chemical rinsing are possible.

Measurement, control and documentation concept

A PLC-based control system handles monitoring and traceability:

  • pH value (continuous measurement)
  • Fill level
  • temperature
  • conductivity
  • Process data - Documentation in accordance with GMP environmental regulations
  • pH trend monitoring and alarm management (including safety overflow)

Dosage (acid / alkali / gases)

  • Dosing via chemical-resistant precision pumps
  • For gases: Dosage via highly efficient vortex injectors

Special features / characteristics

  • Fully automatic pH control with continuous measurement
  • Plant materials in AISI 316L or plastic
  • Safety overflow, pH trend storage and alarm management
  • Compact, modular skid design for easy integration
  • Depending on the neutralization process, a redundant version with a CIP system is possible.
  • Optionally available with dual tank or multi-stage neutralization
  • Design compliant with GMP, WHG and AwSV regulations

Advantage

Safe, automated neutralization of pharmaceutical wastewater – ensuring compliance with environmental limits with high operational reliability and complete process documentation .


Technical data

Capacity: 0.5 – 160 m³/h (scaled as required)

Material: AISI 316L (material 1.4404) or PE-HD / PP

Surface roughness: Ra ≤ 0.8 µm

Operating temperature: 10 – 40 °C

Dosing media: Alkali (NaOH), acid (HCl or H₂SO₄), gases

Measurement and control technology: pH electrode, conductivity measurement, temperature monitoring

Options: Dual chamber system, redox measurement, CIP-compatible design, data logging, automation (Siemens/Rockwell PLC)


contact

For project-specific design and integration into your wastewater line, please use the contact form below.


Modular design & extensions

Modular collection and buffer technology system

Dosing system – volumetric or gravimetric

CIP system pharmaceuticals

CIP – Cleaning in Place

Valve Block – Valve blocks

Processes that inspire. Technology that thinks ahead.

Learn more about our systems and services. Contact us for tailored proposals and expert guidance.

Wilhelm-Roentgen-Straße 10, D-63477 Maintal

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