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On the left is an old, clogged gravel filter for water treatment. On the right is a top-down view of the new filter.
Water technology

From Legacy Systems to High-Tech Systems

filtration Gravel filter Retrofit Wastewater Treatment

Reading time 1 Minute

Person mit Brille vor blauem Hintergrund.

From Iris Stenkamp

Published: 17.08.2026

Updated: 17.08.2026

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Blog Table of Contents

Successful Gravel Filter Retrofit in Water Treatment

What you'll learn in this post:

  • Benefits of Retrofit for Your Business
  • SPALECK Wassertechnik’s Manufacturing Expertise

Slow and steady wins the race: In our current gravel filter project, this meant a step-by-step transition from an aging, outdated system to a fully automated, high-tech system.

A professional retrofit is easy on the budget and reduces the carbon footprint, while delivering maximum performance for the entire system.

Sustainable Modernization for Optimal Performance

Through gradual repairs and the precise installation of new nozzle plates, we ensure optimal flow and efficient backwashing. Combined with modern control technology, operations will be fully automated in the future—ensuring maximum process stability with minimal maintenance requirements.

Everything from a single source: No data loss at interfaces

What makes this project special: No friction at the interfaces, no coordination chaos between different service providers. Our team of experts carried out the entire retrofit from start to finish:

Design & Construction: Custom planning and coordination with the existing building.
On-site retrofitting: Professional disassembly and mechatronic repairs.
Control & Programming: Customized Automation Solutions.
Commissioning: A smooth handover for ongoing operations.

An outstanding achievement by our SPALECK Water Technology team in support of sustainable, future-proof, and resource-efficient water management.

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