This document provides guidelines for the planning and design of a reverse osmosis (RO) treatment system of municipal wastewater. This document is applicable to practitioners and authorities who intend to implement principles and decisions on RO treatment of municipal wastewater in a safe, reliable and sustainable manner. This document addresses RO treatment systems of municipal wastewater in their entirety and is applicable to any RO treatment system component.

This document provides:

— standard terms and definitions;

— a description of the system components of an RO treatment system of municipal wastewater;

— design principles of an RO treatment system of municipal wastewater;

— statements on the feed water quality and technical requirements of an RO treatment system;

— guidance for operation and maintenance of an RO treatment system;

— specific aspects for consideration and emergency response.

Design parameters and regulatory values of an RO treatment system of municipal wastewater are out of the scope of this document.