GB15892-2020

Polyaluminium chloride for treatment of drinking water

生活饮用水用聚氯化铝

GB 15892-2020 es una norma nacional china obligatoria vigente: Polyaluminium chloride for treatment of drinking water. Sector: Electrónica. Enfoque: Seguridad de productos. Entrada en vigor: 1 ago 2021.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

This standard applies to polyaluminium chloride specifically used for the treatment of drinking water. It covers the requirements, test methods, inspection rules, and labeling for both liquid and solid forms of this water treatment chemical. It is strictly applicable to products used for the purification of domestic potable water and does not cover industrial-grade variants.

Requisitos técnicos

The standard specifies the physical and chemical requirements for polyaluminium chloride, categorized into liquid and solid product types. It mandates strict controls on the aluminum oxide (Al2O3) mass fraction, basicity, density, and insoluble matter content. Manufacturers must ensure the product's physical appearance and pH values fall within the specified regulatory limits. A significant portion of the requirements focuses on the heavy metal limits to ensure drinking water safety. The standard enforces maximum mass fractions for iron, arsenic, lead, cadmium, mercury, and chromium. Compliance with these toxic substance thresholds is mandatory for all market access. Additionally, the standard outlines specific raw material requirements, stating that hydrochloric acid must comply with GB/T 320 and aluminum hydroxide with GB/T 4294. It also includes an informative appendix detailing the evaluation method for coagulation performance using natural raw water.

Métodos de ensayo

The standard outlines rigorous analytical procedures to verify compliance. Key testing methods include: - Al2O3 Content: Determined via titration using either a zinc chloride standard solution (arbitration method) or a copper sulfate standard solution. - Basicity: Measured using an acid-base back-titration method with sodium hydroxide after masking aluminum ions with potassium fluoride. - Heavy Metals (As, Pb, Cd, Hg, Cr): Evaluated using advanced instrumental techniques such as atomic fluorescence spectrometry (for As and Hg) and electrothermal/flame atomic absorption spectrometry (for Pb, Cd, and Cr). - Physical Parameters: Density is measured using a hydrometer, pH using an acidometer, and insoluble matter via gravimetric filtration.

Preguntas frecuentes

What products are regulated under GB 15892-2020?

This standard regulates polyaluminium chloride used specifically for the treatment of drinking water. It applies to both liquid and solid forms of the product intended for potable water purification.

Are there any updates from the previous version of GB 15892?

The 2020 version has updated the technical limits for various indicators. It also added new testing methods for iron and chromium content, and updated the testing methodologies for arsenic, lead, cadmium, and mercury by introducing atomic fluorescence spectrometry and flame atomic absorption spectrometry.

How does GB 15892-2020 relate to international standards?

The standard references several Chinese national standards for reagent preparation and testing methodologies, such as GB/T 22596 for iron determination and GB/T 6682 for laboratory water specifications. While it aligns with modern analytical techniques, manufacturers must strictly adhere to the specified GB testing methods for compliance.

The summary above provides a high-level overview of GB 15892-2020. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 15892-2020 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Producto
CCS: G77
ICS: 71.100.80
Organismo competente: Ministry of Industry and Information Technology
Comité técnico: Ministry of Industry and Information Technology

Relaciones

Sustituye a:GB 15892-2009