BS EN ISO 5815-1:2019 - Water Quality Standard

Ensure the highest standards of water quality assessment with the BS EN ISO 5815-1:2019 standard. This comprehensive document provides detailed guidelines for the determination of biochemical oxygen demand (BOD) after n days using the dilution and seeding method with allylthiourea addition. Released on November 27, 2019, this standard is an essential resource for professionals in the field of environmental science and water quality management.

Overview

The BS EN ISO 5815-1:2019 standard is a critical tool for laboratories and organizations involved in water quality testing. It outlines the procedures for measuring the biochemical oxygen demand (BOD) of water samples, which is a key indicator of organic pollution. By following this standard, you can ensure accurate and reliable results that are crucial for environmental monitoring and compliance with regulatory requirements.

Key Features

• Standard Number: BS EN ISO 5815-1:2019
• Pages: 32
• Released: November 27, 2019
• ISBN: 978 0 539 12152 0
• Status: Standard

Detailed Methodology

The standard provides a detailed methodology for the determination of BOD using the dilution and seeding method. This involves the addition of allylthiourea to inhibit nitrification, ensuring that the BOD measurement reflects only the oxygen demand of organic matter. This method is widely recognized for its accuracy and reliability, making it a preferred choice for water quality testing.

Why Measure Biochemical Oxygen Demand?

Biochemical oxygen demand (BOD) is a critical parameter in assessing water quality. It measures the amount of oxygen required by microorganisms to decompose organic matter in water. High BOD levels indicate a high concentration of organic pollution, which can lead to oxygen depletion and harm aquatic life. By measuring BOD, you can assess the impact of wastewater discharges and other pollution sources on water bodies.

Applications

The BS EN ISO 5815-1:2019 standard is applicable in various contexts, including:

• Environmental Monitoring: Used by environmental agencies and organizations to monitor the health of water bodies and assess the impact of pollution.
• Wastewater Treatment: Essential for wastewater treatment facilities to evaluate the effectiveness of treatment processes and ensure compliance with discharge regulations.
• Research and Development: Utilized by researchers and scientists in the study of water quality and the development of new treatment technologies.

Benefits of Using This Standard

Adopting the BS EN ISO 5815-1:2019 standard offers numerous benefits, including:

• Accuracy: Provides a reliable method for measuring BOD, ensuring accurate and consistent results.
• Compliance: Helps organizations comply with national and international water quality regulations.
• Environmental Protection: Supports efforts to protect aquatic ecosystems by providing essential data for pollution control.
• Quality Assurance: Enhances the credibility and reliability of water quality assessments.

Conclusion

The BS EN ISO 5815-1:2019 standard is an indispensable resource for anyone involved in water quality testing and environmental management. By providing a clear and detailed methodology for BOD determination, it ensures that you can achieve accurate and reliable results that are essential for protecting our water resources. Whether you are working in a laboratory, a wastewater treatment facility, or an environmental agency, this standard will help you maintain the highest standards of water quality assessment.

BS EN ISO 5815-1:2019

This standard BS EN ISO 5815-1:2019 Water quality. Determination of biochemical oxygen demand after n days (BODn) is classified in these ICS categories:

• 13.060.70 Examination of biological properties of water
• 13.060.50 Examination of water for chemical substances

This document specifies the determination of the biochemical oxygen demand of waters by dilution and seeding with suppression of nitrification after 5 d or 7 d incubation time.

It is applicable to all waters having biochemical oxygen demands usually between 1 mg/l and 6 000 mg/l. It applies particularly to waste waters but also suits for the analysis of natural waters. For biochemical oxygen demands greater than 6 000 mg/l of oxygen, the method is still applicable, but special care is needed taking into consideration the representativeness of subsampling for preparation of the dilution steps. The results obtained are the product of a combination of biochemical and chemical reactions in presence of living matter which behaves only with occasional reproducibility. The results do not have the rigorous and unambiguous character of those resulting from, for example, a single, well-defined, chemical process. Nevertheless, the results provide an indication from which the quality of waters can be estimated.