ISO 19658:2025

Sludge recovery, recycling, treatment and disposal - Protocol for validating methods for physical properties of sludges

This document specifies procedures for validating the characterization methods for physical properties 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.

In accordance with ISO/TC 275 scope this document is applicable to sludge and products from urban wastewater collection systems, night soil, storm water handling, water supply treatment plants, wastewater treatment plants for urban and similar industrial waters.

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

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