Do the aeration devices require regular cleaning or adjustments?

No. The patented aeration devices are self-cleaning and operate without throttling valves, ensuring consistent bubble formation and minimal maintenance.

DAF - IPF-NPF - Nijhuis Saur Industries

Your challenges

Efficient Separation in Variable Water Conditions

Water quality can fluctuate significantly, especially in industrial processes. Achieving consistent separation of solids and oils under changing conditions requires a system that adapts without compromising performance.

Limited Space for Installation

Many facilities face space constraints, making it difficult to install large treatment systems. A compact footprint is essential for integrating water treatment into existing layouts or small-scale operations.

Minimizing Maintenance and Downtime

Frequent clogging, manual adjustments, and sludge handling can lead to increased maintenance and operational costs. A system that operates reliably with minimal intervention is key to long-term efficiency.

How Does it work?

Both NPF and IPF systems use dissolved air flotation technology enhanced by a lamella plate pack. Micro-sized air bubbles attach to suspended particles, causing them to float to the surface where they are removed by a continuous scraper mechanism.

The plate pack increases the separation area, allowing even the smallest flocs to be captured. The patented aeration system, featuring self-cleaning devices and a centrifugal pump, ensures optimal bubble formation without clogging or manual adjustments. Settled material is removed via automatic drain valves, and treated water exits through either overflow weirs or effluent pipes, depending on the unit type.

Our Impact & Customers Benefits

Maximum Efficiency in a Compact Design

The plate pack configuration allows for high separation efficiency within a small footprint. The IPF is ideal for low to medium flows, while the NPF handles high - capacity application, both shipped pre-assembles for quick installation.

Consistent Performance with Minimal Intervention

The aeration system is designed to be self-cleaning and requires no throttling valves or manual adjustments. This ensures stable operation and reduces the need for frequent maintenance, even under varying load conditions.

High Dry Solids Content in Sludge

Thanks to the optimized aeration and scraper systems, both units produce thickened sludge with high dry solids content. This reduces disposal costs and improves downstream sludge handling efficiency.

Flexible Configuration for Diverse Needs

The NPF is available in multiple versions (NPF, NPF LX, NPF HX) with options for overflow weirs or automatic effluent valves. This flexibility allows customization based on influent characteristics, site limitations, and process requirements.

Frequently asked questions

Both use the same core DAF and plate pack technology. The NPF is designed for higher flow rates and offers options for automatic effluent control, while the IPF is more compact and suited for smaller capacities with overflow weird discharge.

DAF – IPF-NPF