Proceedings

Fine Grit Removal – Increased Efficiency Reduces Costs

Paul Barter, Hydro International: PRESENTATION ONLY

(free)

The composition of grit in wastewater

The cost of grit

Improved efficiencies, the payback!

Effective Inlet Works – An Essential Requirement for an Efficient Treatment Plant Introduction

Inlet works performance is a key factor in the overall performance of a wastewater treatment plant.  Failures upstream causes problems in the waterline due to: FOG accumulation in stagnant areas with associated odour problems; ragging of sensors; carry through of compounds that exacerbate bulking and foaming, and hinder settlement.  It also causes problems in the sludge line due to FOG depositions in the pipework, grit accumulation in the digester reducing the available volume, and digester foaming due to carry through of FOG and surfactants.  The changes in flow and load patterns witnessed over the last decade as a result of climate change often mean that existing inlet works are inappropriately designed and sized.  In addition inlet works are often a neglected asset, infrequently maintained with routine failures.

This event looked at:

  • Examining the case for appropriate and well-maintained inlet works.
  • Recent advances in technologies for screens and grit removal.
  • Considering appropriate sizings for today’s inlet flow variation
  • Exploring new opportunities to recover and reuse the resources that are available in screenings and grit.

The other presentations from this event are also available to download.  Please search for the event in 2015Effective Inlet Works – An Essential Requirement for an Efficient Treatment Plant

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