This standard specifies the water quality standard and utilization mode of reclaimed water for industrial uses.
This standard is applicable to the following scopes of reclaimed water of municipal wastewater for industrial uses:
Cooling water: including once-through and circular make-up water;
Washing water: including slag and ash flushing, smoke-prevention and dust-control, washing, etc.;
Boiler water: including make-up water for low-pressure and medium-pressure boilers;
Process water: including material dissolution, cooking, rinsing, hydraulic exploitation, hydraulic transportation, humidification, dilution, stirring, mineral processing, oilfield reinjection, etc.;
Product water: including slurry, chemical formulation, coating, etc.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 1576-2001 Water Quality for Industrial Boilers
GB/T 5750 Standard Examination Methods for Drinking Water
GB/T 6276.1-1996 Ammonium Hydrogen Carbonate for Industrial Use; Determination of Total Alkalinity; Volumetric Method
GB/T 6920 Water Quality; Determination of pH Value; Glass Electrode Method
GB/T 7478 Water Quality; Determination of Ammonium; Distillation and Titration Method
GB/T 7477-1987 Water Quality; Determination of the Sum of Calcium and Magnesium; EDTA Titrimetric Method
GB/T 7488 Water Quality; Determination of Biochemical Oxygen Demand after 5 Days (BOD5); Dilution and Seeding Method (GB/T 7488-1987, neq ISO 5815:1983)
GB/T 7494 Water Quality; Determination of Anionic Aurfactants; Methylene Blue Apectrophotometric Method (GB/T 7494-1987, neq ISO 7875-1:1994)
GB/T 11893 Water Quality - Determination of Total Phosphorus - Ammonium Molybdate Spectrophotometric Method
GB/T 11896 Water Quality - Determination of Chloride - Silver Nitrate Titration Method
GB/T 11899 Water Quality - Determination of Sulfate - Gravimetric Method
GB/T 11901 Water Quality - Determination of Suspended Substance - Gravimetric Method
GB/T 11903-1989 Water Quality - Determination of Colority
GB/T 11911 Water Quality - Determination of Iron and Manganese - Flame Atomic Absorption Spectrometric Method
GB/T 19923-2005 The following standards are cited：
