GB/T 19923-2024
Reuse of urban recycling water-Water quality standard for industrial uses (English Version)
- Standard No.
- GB/T 19923-2024
- Language
- Chinese, English version preview
- Release Date
- 2024
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 19923-2024
- Replace
- GB/T 19923-2005
- Scope
- This document specifies the water quality indicators, sampling and monitoring, and safe use of industrial water for urban sewage recycling. This document is applicable to recycled water used as raw water for industrial water such as indirect cooling open-circulation cooling water make-up water, boiler feed water, process water and product water, direct cooling water, washing water, etc. in industrial production processes.
- Introduction
GB/T 19923-2024 Standard Interpretation
This standard (GB/T 19923-2024) comprehensively regulates the water quality of industrial water for the recycling of urban sewage. It is applicable to the recycled water used as raw industrial water such as indirect cooling open circulation cooling water make-up water, boiler feed water, process water and product water, direct cooling water, washing water, etc. in industrial production processes.
Water quality indicators
Projects Intercooler open cycle cooling water make-up water, boiler feed water, process water, product water Direct current cooling water, washing water pH 6.0 - 9.0 - Chroma/degree 20 - Turbidity/NTU 5 - Background of Standard Formulation and Analysis of Technological Evolution
This standard is a revision of GB/T 19923-2005, and is mainly optimized for the application needs of recycled water in the industrial field. The new version adds limit values for indicators such as total nitrogen, fluoride, and sulfide, and imposes stricter restrictions on existing indicators such as pH, chromaticity, and chemical oxygen demand (COD).
Implementation Suggestions
- It is recommended that recycled water plants select basic control items and selective control items based on user needs, and ensure that the monitoring frequency meets the requirements of Table 5.
- Anti-backflow devices should be installed in the transmission and distribution system to avoid direct contact between recycled water and drinking water.
- Encourage the use of environmentally friendly measurement methods such as ion chromatography and gas phase molecular absorption spectroscopy.
GB/T 19923-2024 Referenced Document
- GB 18918-2002 Discharge standard of pollutants for municipal wastewater treatment plant
- GB/T 11893 Water quality--Determination of total phosphorus--Ammonium molybdate spectrophotometric method
- GB/T 11894 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
- GB/T 11896 Water quality--Determination of chloride--Silver nitrate titration method
- GB/T 11897 Water quality--Determination of free chlorine and total chlorine--Titrimetric method using N,N-diethyl-1,4-phenylenediamine
- GB/T 11898 Water quality--Determinatoin of free chlorine and total chlorine--Spectrophotometric method useing N,N-diethyl-1,4 phenylenediamine
- GB/T 11899 Water quality--Determination of sulfate--Gravimetric method
- GB/T 11903 Water quality--Determination of colority
- GB/T 11911 Water quality--Determination of iron and manganese--Flame atomic absorption spectrometric method
- GB/T 11914 Water quality--Determination of the chemical oxygen demand--Dichromate method
- GB/T 12149 Determination of silica in water for industrial circulating cooling system and boiler
- GB/T 15451 Industrial circulating cooling water Determination of total and composite alkalinity
- GB/T 16489 Water quality--Determination of sulfide--Methylene blue spectrophotometric method
- GB/T 22597 Determination of chemical oxygen demand of reclaimed wastewater.Potassium dichromate method
- GB/T 39302 Reclaimed water quality—Determination of anionic surfactants—Methylene blue spectrophotometric method
- GB/T 50050 Code for design of industrial circulating cooling water treatment
- GB/T 6920 Water quality--Determination of pH value--Glass electrode method
- GB/T 7477 Water quality--Determination of the sum of calcium and magnesium--EDTA titrimetric method
- GB/T 7482 Water quality--Determination of fluoride--Visual colorimetry with zirconium alizarinsulfonate
- GB/T 7483 Water quality--Determination of fluoride--Fluor reagent spectrophotometric method
- GB/T 7484 Water quality--Determination of fluoride--Ion selective electrode method
- GB/T 7488 Water quality--Determination of biochemical oxygen demand after 5 days(BOD5)--Dilution and seeding method
- GB/T 7494 Water quality--Determination of anionic surfactants--Methylene blue spectrophotometric method
- HJ 1001 Water quality—Determination of total coliforms, fecal coliforms and Escherichia coli—Enzyme substrate method
- HJ 1075 Determination of water quality turbidity turbidity meter method
- HJ 1147 Electrode Method for Determination of pH Value of Water Quality
- HJ 1226 Determination of Sulfide in Water Quality Methylene Blue Spectrophotometric Method
- HJ 347.1 Water Quality Determination of Fecal Coliforms by Membrane Method
- HJ 347.2 Determination of Water Quality Fecal Coliforms by Multi-Tube Fermentation
- HJ 487 Water quality.Determination of fluoride.Visual colormetry with zirconium alizarinsulfonate
- HJ 488 Water quality.Determination of fluoride.Fluorine reagents spectrophotometry
- HJ 493 Water quality.Technical regulation of the preservation and handling of samples
- HJ 494 Water quality.Guidance on sampling techniques
- HJ 495 Water quality.Technical regulation on the design of sampling programmes
- HJ 505 Water quality.Determination of biochemical oxygen demand after 5 days(BOD
)for dilution and seeding method - HJ 535 Water quality.Determination of ammonia nitrogen.Nessler's reagent spectrophotometry
- HJ 536 Water quality.Determination of ammonia nitrogen.Salicylic acid spectrophotometry
- HJ 537 Water quality.Determination of ammonia nitrogen.Distillation-neutralization titration
- HJ 585 Water quality.Determination of free chlorine and total chlorine.Titrimetric method using N,N-diethyl-1,4-phenylenediamine
- HJ 586 Water quality.Determination of free chlorine and total chlorine.Spectrophotonetric method using N,N-diethyl-1,4-phenylenediamine
- HJ 636 Water quality.Determination of total nitrogen.Alkaline potassium persulfate digestion UV spectrophotometric method
- HJ 637 Water Quality Determination of Petroleum and Animal and Vegetable Oils Infrared Spectrophotometry
- HJ 665 Water quality.Determination of ammonium nitrogen by continuous flow analysis (CFA) and Salicylic acid spectrophotometry
- HJ 666 Water quality.Determination of ammonium nitrogen by flow injection analysis (FIA) and Salicylic acid spectrophotometry
- HJ 667 Water quality.Determination of total nitrogen by continuous flow analysis (CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
- HJ 668 Water quality.Determination of total nitrogen by flow injection analysis (FIA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
- HJ 670 Water quality.Determination of orthophosphate and total phosphorus.Continuous flow analysis (CFA) and Ammonium molybdate spectrophotometry
- HJ 671 Water quality.Determination of total phosphorus.Flow injection Analysis (FIA) and Ammonium molybdate spectrophotometry
- HJ 700 Water quality.Determination of 65 elements.Inductively coupled plasma-mass spectrometry
- HJ 755 Water quality Determination of total coliforms and fecal coliforms Paper strip method
- HJ 824 Water quality-Determination of sulfide-Flow injection analysis（FIA）and methylene blue spectrophotometric method
- HJ 826 Water quality-Determination of anionic surfactants - Flow injection analysis(FIA) and methylene blue spectrophotometric method
- HJ 828 Water quality-Determination of the chemical oxygen demand-Dichromate method
- HJ/T 342 Water quality. Determination of sulfate. barium chromate spectrophotometry
- HJ/T 60 Water quality.Determination of sulfides.Iodometric method
GB/T 19923-2024 history
- 2024 GB/T 19923-2024 Reuse of urban recycling water-Water quality standard for industrial uses
- 2005 GB/T 19923-2005 The reuse of urban recycling water.Water quality standard for industrial uses