ISO 19654:2025

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Sludge recovery, recycling, treatment and disposal - Laboratory chemical conditioning procedure

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ISO 19654:2025

Sludge recovery, recycling, treatment and disposal - Laboratory chemical conditioning procedure

ISO 19654:2025

This method gives a standardized procedure for the conditioning operation when selecting a conditioning product at laboratory scale and also for the production of flocculated thickened sludge for subsequent dewatering tests.

This document provides a method for laboratory chemical conditioning of sludge.

The method applies to sludges and suspensions from:

  • storm water handling;
  • urban wastewater collecting systems;
  • urban wastewater treatment plants;
  • industrial wastewater that has been treated similarly to urban wastewater;
  • water supply plants.

This document is applicable to all sludge that can have similar environmental or health impacts, or both, with exclusion of hazardous sludge from industry and dredged sludge.

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