T/SSESB 7-2023 Active Group standards

T/SSESB 7-2023 Guidelines for Wastewater Treatment Using Forward Osmotic Membrane Technology

Publish Date: 2023-06-30 Implement Date: 2023-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 20.00

Out of stock

Basic Information

Standard Code: T/SSESB 7-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Environmental protection, health, and safety (vocabulary)

Publish Date: 2023-06-30

Implement Date: 2023-07-01

Scope

Main Technical Content: 7. Technical Requirements 7.1 General Provisions 7.1.1 Based on the information on raw water volume, water quality, requirements for water reuse, and discharge requirements, select suitable pretreatment and extractant regeneration processes. 7.1.2 Determine the membrane material based on raw water quality, pollutant types, water production requirements, and recovery rates. Common reverse osmosis membranes include cellulose triacetate (CTA) membranes, polyamide thin-film (PA-TFC) composite membranes, and aquaporin (AQP) composite membranes. For more information on these membranes and their application scenarios, see Appendix A. 7.1.3 The selection of process equipment and the setup of automatic control systems shall comply with the requirements of HJ 579, HJ 2010, GB/T 39717, GB/T 19249, and HJ/T 270. 7.1.4 Cleaning and maintenance of reverse osmosis membrane elements are detailed in Appendix B. 7.2 Basic Design Calculations 7.2.1 The water production rate of reverse osmosis membrane modules is calculated using Equation (1): q_s = J × S × t_net (1) where: qs — stable water production rate of a single membrane element, in cubic meters per day (m3/d); J — membrane flux, in cubic meters per square meter per hour (m3/(m2?h)); S — effective area of the membrane element, in square meters (m2); t_net — cumulative water production time of the membrane, in hours per day (h/d). 7.2.2 Membrane flux is calculated using Equation (2): J = ?V/A?t (2) where: A — effective area of the membrane, in square meters (m2); ?V — amount of water permeated into the extractant solution during a certain time period (?t, h); 7.2.3 Reverse solute flux is calculated using Equation (3): J_s = (V_t C_t - V_0 C_0)/A?t (3) where: Js — reverse solute flux, in grams per square meter per hour (g/(m2?h)); V_t, V_0 — volumes of the feed solution at time t and initial time, respectively, in liters (L); C_t, C_0 — salt concent