GB/T 30299-2013General technical specifications for energy recovery devices in reverse osmosis system (English PDF)

Foreword

This document was issued on 31 December 2013 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the Standardization Administration of the People's Republic of China, and has been in force since 1 August 2014. It is the first edition of this standard.

This standard was drafted in accordance with the rules given in GB/T 1.1-2009, and is proposed by and under the jurisdiction of the National Technical Committee on Membrane Technology (SAC/TC 382).

Classification: ICS 21.020 and 23.100.01, CCS J 99.

1 Scope

This standard specifies the classification and model, the requirements, the test methods, the inspection rules and the requirements for marking, packaging, transport and storage of energy recovery devices in reverse osmosis systems.

This standard is applicable to work exchange energy recovery devices for desalination systems such as seawater desalination and brackish water desalination using the reverse osmosis method.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies; for undated references, the latest edition, including any amendments, applies.

GB/T 191 Packaging - Pictorial marking for handling of goods; GB/T 3452.1 Fluid power systems - O-rings - Part 1: Inside diameters, cross-sections, tolerances and size identification code; GB/T 4622.2 Dimensions for spiral wound gaskets for pipe flanges; GB/T 5750.4 Standard examination methods for drinking water - Organoleptic and physical parameters; GB/T 13384 General specifications for packing of mechanical and electrical products.

GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system; GB/T 17248.3 Acoustics - Noise emitted by machinery and equipment - Measurement of emission sound pressure levels at a work station and at other specified positions - Engineering method in an essentially free field over a reflecting plane; GB/T 20878 Stainless and heat-resisting steels - Designation and chemical composition; HY/T 108-2008 Energy recovery device in reverse osmosis; JC/T 552 Filament-wound thermosetting resin pressure pipe.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 20103-2006 and HY/T 108-2008 and the following apply.

3.1 reverse osmosis; RO: a process in which, under a pressure higher than the osmotic pressure difference, the solvent - such as water - passes through the semipermeable membrane to the low-pressure side of the membrane, while other components of the solution - such as salts - are retained on the high-pressure side and discharged along with the concentrated solution, thus achieving effective separation [GB/T 20103-2006, definition 4.2.2].

3.2 energy recovery device: a device designed to recover the hydraulic energy of the brine from the reverse osmosis desalination system and convert it into the hydraulic energy of the membrane feed water [HY/T 108-2008, definition 3.1].

3.3 work exchange energy recovery device: a device that completes a one-step energy conversion, transferring the hydraulic energy of the brine to the raw water through a piston or by direct contact, so as to recover the hydraulic energy of the brine.