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  • Featherston Wastewater Treatment Plant - Operation &

    Maintenance Manual

    South Wairarapa District Council

    May 2014 Working Draft

  • Featherston Wastewater Treatment Plant - Operation & Maintenance Manual Working Draft

    May 2014

    AWT WATER, A MEMBER OF THE MOTT MACDONALD GROUP. LEVEL 1, 23 UNION STREET, AUCKLAND 1010

    R:\Projects\1250_Combined_Scheme_Review\500 Deliverables\510 Reports\Featherston Resource Consent Application\Appendix 6a_AWT_FWWTP Operations and Maintenance Manual.docx

    S

    i

    QUALITY RECORD SHEET

    Document Featherston Wastewater Treatment Plant - Operation & Maintenance Manual - Working Draft

    Reference R:\Projects\1250_Combined_Scheme_Review\500 Deliverables\510 Reports\Featherston Resource Consent Application\Appendix 6a_AWT_FWWTP Operations and Maintenance Manual.docx

    Date May 2014

    DOCUMENT CONTROL

    The following organisation(s) shall receive a electronic copy of this report on release:

    South Wairarapa District Council

    Action Name Title, Company Signed Date

    Originated by Emmanuel Rochais Process Engineer, AWT Water Ltd 5/3/2014

    Reviewed by Sarah Sunich Senior Environmental Scientist, AWT Water Ltd

    15/05/2014

    Approved by Jason Ewert Technical Director, AWT Water Ltd

    REVISION HISTORY

    Version Prepared by Description Date

    Working Draft AWT Operations and Maintenance Manual for the Treatment Plant 15/05/2014

    DISCLAIMER

    This document is issued for the party which commissioned it and for specific purposes connected with the above-captioned project only. It should not be relied upon by any other party or used for any other purpose.

    We accept no responsibility for the consequences of this document being relied upon by any other party, or being used for any other purpose, or containing any error or omission which is due to an error or omission in data supplied to us by other parties.

    This document contains confidential information and proprietary intellectual property. It should not be shown to other parties without consent from us and from the party which commissioned it.

  • Featherston Wastewater Treatment Plant - Operation & Maintenance Manual Working Draft

    May 2014

    AWT WATER, A MEMBER OF THE MOTT MACDONALD GROUP. LEVEL 1, 23 UNION STREET, AUCKLAND 1010

    R:\Projects\1250_Combined_Scheme_Review\500 Deliverables\510 Reports\Featherston Resource Consent Application\Appendix 6a_AWT_FWWTP Operations and Maintenance Manual.docx

    S

    ii

    TABLE OF CONTENTS

    EXECUTIVE SUMMARY ...................................................................................................................................................................... IV

    1 INTRODUCTION ..................................................................................................................................................................1

    1.1 Purpose of the Manual .......................................................................................................................................................1

    1.2 Consent Requirements ......................................................................................................................................................1

    2 PLANT OVERVIEW .............................................................................................................................................................1

    2.1 Plant Description ................................................................................................................................................................1

    2.2 Influent and Effluent quality ...............................................................................................................................................1

    2.3 Plant Drawings and Photos ...............................................................................................................................................1

    2.4 Plant Process Items ...........................................................................................................................................................1

    3 PLANT OPERATING PROCEDURES ...............................................................................................................................1

    3.1 Process Units .....................................................................................................................................................................1

    3.1.1 Facultative ponds ...............................................................................................................................................................1

    3.1.2 UV treatment ......................................................................................................................................................................1

    3.1.3 Monitoring Equipment ........................................................................................................................................................1

    3.1.4 Stream Discharge ..............................................................................................................................................................1

    3.2 Key Performance Indicators ..............................................................................................................................................2

    3.3 Alarm Conditions ................................................................................................................................................................2

    3.4 Odour Management ...........................................................................................................................................................2

    3.5 Emergency Operation Procedures ....................................................................................................................................2

    3.6 Pond Desludging Procedures ............................................................................................................................................2

    4 OPERATIONAL AND COMPLIANCE MONITORING .......................................................................................................2

    4.1 Process Monitoring ............................................................................................................................................................2

    4.1.1 Inflow Monitoring ................................................................................................................................................................2

    4.1.2 Influent Monitoring ..............................................................................................................................................................2

    4.1.3 Weather Climate Data Collection ......................................................................................................................................2

    4.1.4 Reporting ............................................................................................................................................................................2

    4.2 Effluent Discharge monitoring ...........................................................................................................................................2

    4.2.1 Outlet Flow Monitoring .......................................................................................................................................................2

    4.2.2 Quality Monitoring ..............................................................................................................................................................3

    4.3 Site Inspection ....................................................................................................................................................................3

    4.3.1 Regular site walkovers .......................................................................................................................................................3

    4.3.2 Inspection after Heavy Rain ..............................................................................................................................................3

    4.3.3 Odour Walkovers................................................................................................................................................................3

    4.4 Complaints Register ...........................................................................................................................................................3

    4.5 Environmental Monitoring ..................................................................................................................................................3

    4.6 Reporting ............................................................................................................................................................................3

    4.6.1 Quarterly Reporting ............................................................................................................................................................3

  • Featherston Wastewater Treatment Plant - Operation & Maintenance Manual Working Draft

    May 2014

    AWT WATER, A MEMBER OF THE MOTT MACDONALD GROUP. LEVEL 1, 23 UNION STREET, AUCKLAND 1010

    R:\Projects\1250_Combined_Scheme_Review\500 Deliverables\510 Reports\Featherston Resource Consent Application\Appendix 6a_AWT_FWWTP Operations and Maintenance Manual.docx

    S

    iii