• BS 7781:1994

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Procedure for type testing of small biological domestic wastewater treatment plants

    Available format(s):  Hardcopy, PDF

    Superseded date:  31-05-2007

    Language(s):  English

    Published date:  15-12-1994

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Committees responsible
    Foreword
    1. Scope
    2. References
    3. Definitions
    4. Plant selection and preliminary evaluation
    5. Test procedure
    6. Sampling
    7. Sample analysis
    8. Reporting of results
    9. Equipment maintenance and breakdown
    10. Design changes
    Tables
    1. Diurnal flow
    2. Alternative test schedules
    3. Number of stress tests for the procedure
    4. Holiday period stress test
    5. Washing machine stress test
    6. Bath water stress test
    7. Calculation of plant performance down to 8 deg C
    8. Sampling periods following stress
    9. Sample analysis
    10. Bands for effluent quality
    List of references

    Abstract - (Show below) - (Hide below)

    Specifies a procedure for type testing domestic biological wastewater treatment plants for up to 50 population equivalent (PE). Coverage includes: definitions, design changes, and equipment maintenance and breakdown. Also gives detailed tables.

    General Product Information - (Show below) - (Hide below)

    Committee B/505
    Development Note Supersedes 93/107080 DC (10/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    BS EN 1085:2007 Wastewater treatment. Vocabulary
    BS 7671:1992 REQUIREMENTS FOR ELECTRICAL INSTALLATIONS
    BS 6068-2.33:1987 Water quality. Physical, chemical and biochemical methods Method for the determination of ammonium: automated spectrometric method
    BS 6297:1983 Code of practice for design and installation of small sewage treatment works and cesspools
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