ISO 22449-1:2020 pdf download

ISO 22449-1:2020 pdf download.Use of reclaimed water in industrial cooling systems — Part 1: Technical guidelines
1 Scope
This document defines terms related to industrial cooling water systems and specifies technical guidelines for the use of reclaimed water for make-up water purposes water in industrial cooling systems. It provides a basic framework for consideration in the design and operation of industrial cooling systems using reclaimed water. The aim of the document is to promote and to help the implementation of the use of reclaimed water in industrial cooling systems. It provides: — Terms and definitions; — Technical guidelines for the use of reclaimed water in industrial cooling systems. This document is applicable to cooling systems that are considered to work as auxiliary systems for the normal operation of an industrial process. However, the operation of a cooling system in relation to process safety is not covered in this document. In addition, some environmental concerns also need to be taken into consideration, for example the drift control or the use of some persistent biocides. This document can be used to encourage consistency within any organization engaged in the use of reclaimed water.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 20670, Water reuse — Terminology
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 20670 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1.1 blowdown (purge) water
water discharged from the system to control the concentration of salts or other impurities in the circulating water, which requires treatment either in a municipal treatment system or onsite [SOURCE: ISO 16345:2014, 2.11]
4.1 General
Considerations for using industrial wastewater as a source of makeup water for cooling water purposes will likely require either an upgrade to the existing wastewater treatment system, or an additional treatment process to improve effluent water quality and remove constituents of concern for reuse as make-up water for cooling water systems. Industry and facility may have specific requirements that include the space, design and choice of materials for the selection of a cooling system. A new installation also should have an upgrading in water treatment process and take economic factors into consideration to optimize the cost on operation and maintenance and balance the environmental efficiency. For the purpose of water reuse in industrial cooling systems, the following factors should be taken into consideration: water quality, water quantity and temperature, wastewater treatment technologies for reuse, treatment for inhibition of corrosion, scaling and biological fouling, based on the industrial water reuse experience among different regions.