Products > Thermal decontamination of biological effluents > Batch neutralization system (BNS)

Batch neutralization system (BNS)

Automated industrial effluent neutralization system

The BNS (Batch Neutralization System) developed by Actini Group has been specifically designed to automatically adjust the pH of effluents before discharge.

Initially developed for the treatment of effluents generated by batch effluent decontamination systems, it can also handle wastewater from other industrial processes, cleaning operations, or intermittent discharges thanks to its modular design and multiple configuration options.

The BNS ensures accurate and reliable neutralization of each effluent batch while helping facilities comply with applicable environmental and regulatory discharge requirements.

Neutralisation en Batch / par lots

Applications

The BNS is suitable for a wide range of industrial applications:

  • Neutralization of effluents from batch decontamination systems
  • Pharmaceutical wastewater treatment
  • Biotechnology wastewater treatment
  • Wash and rinse water neutralization
  • Intermittent industrial discharges
  • Wastewater treatment before discharge
  • Research facilities and laboratories
  • Processes requiring precise pH adjustment

Its flexibility allows easy integration into both new and existing installations.

Capacity & dimensions

MODELS

DAILY CAPACITY*

NEUTRALIZATION TANK VOLUME

Length

Width

Height
BNS-300 1,000 to 3,500 L/day 530 L 1,290 mm 990 mm 1,180 mm
BNS-750 3,500 to 7,500 L/day 1,200 L 1,500 mm 1,200 mm 1,690 mm
BNS-1600 7,500 to 12,000 L/day 2,850 L 1,920 mm 1,470 mm 2,040 mm
BNS-2200 12,000 to 16,000 L/day 4,200 L 2,120 mm 1,820 mm 2,390 mm

The BNS range can process from 1,000 to 16,000 liters of effluent per day through four models designed for laboratories, research centers, and industrial facilities.

Technology

The BNS is based on a fully automated batch neutralization technology designed to treat defined volumes of effluent before discharge.

Each treatment cycle is performed in a dedicated tank where the effluent is homogenized and neutralized through controlled acid or caustic soda injection. Automated process control ensures precise pH adjustment and treatment validation before discharge.

This approach provides highly accurate neutralization while offering excellent flexibility for facilities operating in batch or campaign mode.

Standard features

  • pH adjustment function
  • Fully automatic neutralization system
  • Polyethylene (PE) tanks
  • Pumping skid with high-flow centrifugal pump
  • Automated process control
  • Modular design

Operating principle

The effluent to be treated is collected in a neutralization tank where it is continuously mixed to ensure complete homogenization.

Automatic injection of caustic soda and acid neutralizes the effluent pH. Adjustment is controlled by a pH probe installed in the recirculation loop, which regulates the dosing pumps.

The mixing pump provides continuous agitation at a flow rate exceeding five times the tank volume per hour, ensuring optimal dilution and homogeneous mixing of injected chemical solutions.

The tank volume is sized to maintain an approximately 30-minute contact time, allowing complete chemical reaction without residual reaction after pH verification.

Once treatment is completed:

  • a high-flow pump empties the tank;
  • the pH is measured before discharge;
  • if the pH is compliant, the effluent is discharged;
  • if the pH remains outside the specified range, the effluent is automatically returned to the tank for a new neutralization cycle.

Why choose the BNS?

The BNS is particularly suitable for facilities generating discontinuous effluent volumes that require precise pH control before discharge.

Its modular design, automated operation, and wide range of options enable easy integration into pharmaceutical, biotechnology, industrial, and research facilities.

Benefits

Accuracy & reliability

  • Precise pH adjustment
  • Automated process control
  • Repeatable batch neutralization
  • Reduced risk of human error

Easy operation

  • Fully automated operation
  • User-friendly HMI (optional)
  • Simplified process monitoring
  • Easy maintenance

Integration flexibility

  • Modular architecture
  • Suitable for various effluent types
  • Compatible with existing installations
  • Multiple customization options

Safe discharge management

  • Continuous pH monitoring
  • Validation before discharge
  • Automatic retreatment capability
  • Compliance with environmental requirements

Technical specifications

Fonctions

• Automatic acid and caustic soda injection • Chemical solution dilution • Effluent mixing • Automatic pH adjustment within the specified range

Construction

• Polyethylene neutralization tank • Pumping skid • High-flow centrifugal pump • Recirculation loop • pH control probe

Icone performance

Performance

• Automated batch neutralization • Approximately 30-minute contact time • Mixing flow rate exceeding five times the tank volume per hour

Available options

To meet the specific requirements of each installation, several options can be integrated:

  • Second neutralization tank for redundancy
  • Dual neutralization system
  • Plate cooling heat exchanger for effluents above 60°C
  • Dedicated electrical cabinet with HMI
  • Dedicated chemical solution tanks
  • Specific inlet connection for direct wastewater integration

Standards & compliance

The BNS has been designed to neutralize effluents before discharge and contribute to compliance with environmental requirements applicable to industrial facilities.

Automated pH control, treatment validation before discharge, and automatic retreatment capabilities help secure operations and control wastewater discharges

Use cases

Effluents from batch decontamination systems

Neutralization of biological effluents after treatment and before discharge.

Pharmaceutical industry

Treatment of effluents generated during production, cleaning, and decontamination operations.

Biotechnology industry

Management of effluents requiring precise pH adjustment before discharge.

Laboratories & research centers

Neutralization of wastewater generated by research activities and technical installations.

Industrial processes

Treatment of acidic or alkaline effluents before discharge to sewer networks or wastewater treatment facilities.v

Equipement de décontamination pour laboratoire Micro en série Actini Group

Standards & compliance

The BNS system is designed to neutralize effluents prior to discharge in accordance with the environmental requirements applicable to industrial facilities.

With its automated pH control and pre-discharge validation, it helps ensure operational safety and compliance with discharge regulations.

Comparable products

Continuous Neutralization System (CNS)

Solution designed for installations requiring continuous effluent neutralization with permanent pH regulation.

Biological Effluent Decontamination Systems

Actini EDS systems provide thermal decontamination of biological effluents prior to neutralization and discharge.

Do you have a neutralization project?

Actini Group teams support you in sizing, integrating, and implementing your neutralization system to ensure wastewater compliance and operational safety.

Contact our experts to discuss your project or request a quotation.

FAQ – Frequently asked questions about the BNS batch neutralization system

What is a batch neutralization system?

A batch neutralization system treats a defined volume of effluent in a dedicated tank before discharge. The pH is automatically adjusted through chemical dosing until the required compliance range is achieved.

What types of effluents can the BNS treat?

The BNS is designed to neutralize effluents from batch decontamination systems but can also process wastewater from industrial processes, cleaning operations, and intermittent discharges requiring pH adjustment before release.

What is the capacity of the BNS system?

The BNS range covers neutralization capacities from 1,000 to 16,000 liters per day through four available models: BNS-300, BNS-750, BNS-1600, and BNS-2200.

Can the BNS be connected to a biological effluent decontamination system?

Yes. The BNS was specifically designed to neutralize effluents generated by batch decontamination systems and can be integrated into a complete biological effluent treatment process.

What are the benefits of an automatic neutralization system?

An automatic neutralization system ensures accurate pH adjustment, reduces manual intervention, and helps secure wastewater compliance before discharge.

How do I select the right BNS model?

Model selection mainly depends on the daily effluent volume, the physicochemical characteristics of the wastewater, and facility operating requirements. Actini teams support customers in selecting the most suitable system.

How is pH controlled during treatment?

A pH probe installed in the recirculation loop continuously monitors the effluent and automatically controls acid and caustic soda dosing pumps to achieve the target pH.

Can the BNS be customized?

Yes. Options include a second neutralization tank for redundancy, a plate cooling heat exchanger for effluents above 60°C, a dedicated electrical cabinet with HMI, and dedicated chemical solution tanks.

What is the difference between batch and continuous neutralization?

Batch neutralization treats effluents in successive batches within a dedicated tank, while continuous neutralization adjusts pH continuously on a flowing wastewater stream. The choice depends mainly on treatment volume and operating mode.

Request a quote

    Products you may also be interested in

    Industrial decontamination in batch - ULTIBATCH

    Industrial batch decontamination system custom - BDS

    Continuous Neutralization System (CNS)

    Batch neutralization system (BNS)