GB/T 38102-2019Treatment and disposal method for fluorine acid waste liquid in the production of wet process phosphoric acid and phosphate fertilizer (English PDF)
湿法磷酸及磷肥生产中氟硅酸废液处理处置方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 18, 2019
Implementation date
September 1, 2020
Scope
GB/T 38102-2019 is the English-translated version of 湿法磷酸及磷肥生产中氟硅酸废液处理处置方法.
GB/T 38102-2019 is the Chinese standard "Treatment and disposal method for fluorine acid waste liquid in the production of wet process phosphoric acid and phosphate fertilizer".
Its scope clause reads: This standard specifies the source, treatment and disposal methods and environmental protection requirements of fluorosilicic acid waste liquid in the production of wet process phosphoric acid and phosphate fertilizer.
This standard applies to the treatment and disposal of fluorosilicic acid waste liquid in the production of wet process phosphoric acid and phosphate fertilizer. Its clauses include source; treatment and disposal methods.
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Document preview — GB/T 38102-2019
National Standard of the People's Republic of China
- ICS
- 13.030.20
- Classification
- Z 05
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 source
- 4 treatment and disposal methods
1 Scope
This standard specifies the source, treatment and disposal methods and environmental protection requirements of fluorosilicic acid waste liquid in the production of wet process phosphoric acid and phosphate fertilizer.
This standard applies to the treatment and disposal of fluorosilicic acid waste liquid in the production of wet process phosphoric acid and phosphate fertilizer.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 4292 aluminum fluoride
GB 5085.7 General rules for the identification of hazardous wastes
GB/T 7746 industrial anhydrous hydrogen fluoride
GB 8978 Integrated Wastewater Discharge Standard
GB 16297 Integrated emission standards for atmospheric pollutants
GB 18599 General industrial solid waste storage and disposal site pollution control standards
GB/T 23936 Industrial sodium fluorosilicate
GB/T 28653 Industrial ammonium fluoride
GB/T 28655 Industrial ammonium hydrogen fluoride
HG/T 2768 Industrial Magnesium Fluorosilicate
HG/T 4692 Industrial ammonium fluorosilicate
HG/T 4693 Industrial potassium fluorosilicate
YS/T 517 sodium fluoride
3 source
The production of wet-process phosphoric acid is mainly the decomposition of phosphate ore by sulfuric acid. The production of phosphate fertilizer is the reaction of sulfuric acid or phosphoric acid with phosphate ore.
The fluorine-containing exhaust gas (the main component is silicon tetrafluoride) is absorbed by water to form a fluorosilicic acid waste liquid.
The chemical reaction equation is as follows.
3SiF4 (2 n)H2O=2H2SiF6 SiO2·nH2O
4 treatment and disposal methods
4.1 Production of sodium fluorosilicate, potassium
4.1.1 Method summary
Fluorosilicic acid reacts with sodium sulfate (or sodium chloride) or potassium sulfate (or potassium chloride) to form sodium fluorosilicate (or potassium fluorosilicate) precipitate, solid solution
The product is obtained by processes such as separation, washing, centrifugation, and drying. The chemical reaction equation is as follows.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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