SIST EN 15795:2010

Overview

SIST EN 15795:2010 is an important European Standard developed by the European Committee for Standardization (CEN) concerning the use of natural unexpanded aluminosilicates for the treatment of water intended for human consumption. The standard outlines the key characteristics, minimum purity requirements, test methodologies, and recommended best practices for the safe and effective use of these inorganic materials in drinking water purification. Adoption of SIST EN 15795:2010 ensures consistency in water treatment processes across Europe, supporting public health protection and regulatory compliance.

Key Topics

• Product Identification

  • Covers natural, unexpanded aluminosilicates such as basalt, volcanic sand, and phonolith.
  • Chemical formula: AlxSiyOz (aluminium silicate).
  • Supplied in a range of particle size distributions for different water treatment needs.

• Physical and Chemical Properties

  • Typically a hard, light to dark grey granular material with high mechanical strength.
  • Crystalline structure, with spherical or cubic particles depending on source and processing method.
  • Bulk density (loose): 1,250 - 1,550 kg/m³; bulk density (packed): 1,400 - 1,750 kg/m³.
  • Acid-soluble material maximum: 10% by mass.

• Testing and Quality Requirements

  • Sets purity standards, including limits on impurities and acid-soluble material.
  • Specifies test methods for particle size distribution, bulk density, and chemical analysis (referencing EN 12902).
  • Details the procedure for appropriate sampling and analysis.

• Labelling, Transportation, and Safety

  • Requires clear labelling of product name, net mass or volume, supplier details, and a conformity statement to EN 15795.
  • Outlines safe storage for unlimited periods.
  • Emphasizes the need for clean delivery containers to prevent contamination.
  • Indicates compliance with EU classification and labelling regulations.
  • Highlights basic handling precautions, such as dust minimization and the use of protective masks during dry handling.

Applications

Natural unexpanded aluminosilicates, as regulated by SIST EN 15795:2010, are widely used in the filtration and support layers of water treatment filters. Their granular nature and inert chemical properties make them suitable for:

• Multilayer and single-layer filtration systems

  • Serving as either filtration media or support layers, adapted according to the specific requirements of municipal and industrial water treatment plants.
  • Enhancing removal of suspended solids and improving the quality of water intended for human consumption.

• Adaptability to Different Treatment Setups

  • Utilized in both open and closed filter designs.
  • Suitable for varying filtration rates and bed depths, depending on raw water quality and operational demands.
  • Used in the context of compliance with national and EU drinking water quality directives.

• Safe for Human Health and the Environment

  • Not classified as hazardous under EU regulations.
  • No secondary effects reported during standard operational use.
  • Can be stored and handled with straightforward precautions.

Related Standards

• EN 12901: Products used for treatment of water intended for human consumption - Inorganic supporting and filtering materials - Definitions.
• EN 12902: Products used for treatment of water intended for human consumption - Inorganic supporting and filtering materials - Methods of test.
• EU Council Directive 98/83/EC: Quality of water intended for human consumption.
• Regulation (EC) No 1272/2008: Classification, labelling, and packaging of substances and mixtures.

These related standards provide definitions, detailed testing methodologies, and regulatory frameworks that support the consistent and safe implementation of SIST EN 15795:2010 in water treatment applications throughout Europe. Organizations adhering to these standards help guarantee the safety and quality of drinking water supply systems.