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ISO/WD 4240-6

Fine bubble technology — Environmental applications — Part 6: Test method for nutrient removal from sediments by washing using fine bubbles

General information

20.99     Sep 25, 2026

ISO

ISO/TC 281

International Standard

Scope

This document specifies a test method to evaluate the effectiveness of removing nitrogen and phosphorus from sediments through washing using fine bubble technology. It is applicable to freshwater and estuarine environments where sediment-bound nutrients cause water quality degradation.

Life cycle

NOW

PROJECT
ISO/WD 4240-6
20.99 WD approved for registration as CD
Sep 25, 2026