Wastewater pretreatment for poultry processing to support future growth - Clazing B.V. - Reference

Project’s context & challenges

Exportslachterij Clazing B.V. is a leading halal poultry processing company located in the Netherlands. As part of its growth strategy and increasing production capacity, the company required an upgrade of its existing wastewater pretreatment installation.

The anticipated production expansion would significantly increase both hydraulic loading and pollution loads within the wastewater stream, characterized by elevated concentrations of fats, suspended solids, COD, and nutrients. At the same time, the new installation needed to be integrated within the existing treatment building and infrastructure, minimizing civil modifications while ensuring reliable long-term performance.

To support future growth ambitions, Clazing required a robust, scalable pretreatment solution capable of delivering consistent treatment efficiency under varying operating conditions.

Solution

To address these challenges, Nijhuis Saur Industries supplied a completely new flocculation and Dissolved Air Flotation (DAF) installation to replace the existing flotation unit.

The solution combines advanced chemical conditioning with proven Nijhuis DAF technology, specifically developed for demanding applications in the poultry processing industry. Utilizing a PFR100 Pipeflocculator and NPF200 DAF system, the installation delivers highly efficient removal of fats, suspended solids, and organic pollutants while maintaining stable operation under fluctuating wastewater conditions.

Designed with future capacity expansion in mind, the system provides a reliable foundation for Clazing’s continued growth while improving wastewater quality and reducing downstream treatment requirements.

Scope of supply

Feed pump for the flocculation and flotation system
PFR100 Pipeflocculator
NPF200 Dissolved Air Flotation (DAF) unit
Complete chemical dosing systems
Online pH measurement and automatic pH correction
Sludge removal system
PLC/HMI control system with Siemens PLC and NI-Connect remote connectivity
Engineering, project management, documentation, transport, installation supervision, commissioning, and start-up support

Applied Solutions

Chemical conditioning

Inline coagulation and flocculation via the PFR100 Pipeflocculator, ensuring optimal particle aggregation and efficient pollutant removal

Automated pH correction

Continuous monitoring and automatic adjustment of pH conditions to maximize floc formation and flotation performance

Dissolved Air Flotation (DAF)

High-efficiency treatment using the NPF200 DAF system with lamella technology for effective removal of fats, oils, grease, suspended solids, and organic contaminants

Sludge handling & process automation

Automatic sludge removal combined with integrated PLC/HMI process monitoring ensures stable operation, operational insight, and reduced operator intervention

Removal key figures

80–90%

COD removal

90–97%

TSS removal

90–96%

Oil & Grease removal

50–70%

Total Nitrogen removal

Customer benefits

Ready for future growth

The installation has been designed to accommodate increased production volumes and future capacity expansions

High pollutant removal efficiency

Excellent removal rates for Oil & Grease, COD, TSS, and nutrients contribute to improved effluent quality and lower environmental impact

Compact integration

The new installation was successfully integrated into the existing treatment facility, minimizing civil modifications and space requirements

Proven poultry industry technology

The solution is based on Nijhuis' extensive track record in the poultry processing sector, ensuring reliable and predictable performance

Operational reliability

Robust process design and automated control systems provide stable treatment performance, even under fluctuating loading conditions

Reduced downstream impact

Lower pollution loads improve the performance and efficiency of downstream treatment processes

Full lifecycle support

Nijhuis supported the project from engineering and installation through commissioning and start-up, ensuring a smooth implementation process

"The pretreatment installation provides the capacity and reliability required to support our future growth ambitions, while significantly improving wastewater quality "

Henny de Kruijff

Exportslachterij Clazing B.V.

Wastewater pretreatment for poultry processing to support future growth – Clazing B.V.