Wastewater Treatment Plant - Sludge Treatment

Sludge Flow Measurement in Recirculation Line

Recirculation Flow Measurement
View of measurement shaft
Recirculation Flow Measurement


  • Pipe with 0.4 m diameter, made of stainless steel
  • Full filled
  • High pollution load, up to 1 % dry solids

Definition of tasks

  • Failsafe and stable measurement of the return sludge conveyed using screw pump lifting equipment in the horizontal line downstream of the transfer chamber
  • Both existing measurements (EMF + clamp-on) did not work reliably or did not work at all due to high pollution and gas loads
  • Low installation expenses
Recirculation Flow Measurement
Setup of measurement place
Recirculation Flow Measurement


  • The flow measurement system Type NFP has been used.
  • Upstream of the non-functioning EMF a hole has been drilled and a nozzle has been welded onto the existing pipeline. Subsequently a ball valve for sensor removal under process conditions has been installed and the sensor has been adjusted and fixed.


  • Easy, simple and quick upgrading of existing facilities
  • Old measuring devices did not necessarily need to be removed
  • Reliable measurement despite high dry solid contents

Used products

Haven't found the appropriate Application?

Product Consultation

You want to have best information about our products? Our experts will gladly develop together with you the best system solution for your application.

Applications & Solutions

Applications & Solutions Our Applications and Solutions catalogue offers a brief overview to the most interesting application examples in a single pdf-document.