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12.3.1 Howick Wastewater Works For further information, please contact: Planning Services Engineering & Scientific Services Division Umgeni Water P.O.Box 9, Pietermaritzburg, 3200 KwaZulu-Natal, South Africa Tel: 033 341-1522 Fax: 033 341-1218 Email: [email protected] Web: www.umgeni.co.za PREFACE This Infrastructure Master Plan 2018 describes Umgeni Water’s infrastructure plans for the financial period 2018/2019 – 2048/2049. It is a comprehensive technical report that provides detailed information on the organisation’s current infrastructure and on its future infrastructure development plans. This report replaces the last comprehensive Infrastructure Master Plan that was compiled in 2017. The report is divided into six volumes summarised in Table i and shown schematically in Figure i. Table i Umgeni Water Infrastructure Master Plan 2018/2019 volumes. Focus Area Purpose Volume 1 describes the most recent changes and trends within the primary environmental dictates that influence Umgeni Water’s infrastructure development plans (Section 2). Section 3 provides a review of historic water sales against past projections, as well as Umgeni Water’s most recent water demand projections, compiled at the end of 2017. Section 4 describes Water Demand Management initiatives that are being undertaken by the utility and Section 5 contains a high level review of the energy consumption used to produce the water volumes analysed in Section 3. Section 6 focuses on research into the impacts of climate change and alternative supply options including waste water reuse and desalination. Section 7 provides an overview of the water resource regions and systems supplied within these regions in Umgeni Water’s operational area. Volume 2 describes the current water resource situation and the water supply infrastructure in the Mgeni System (Section 8; shown in orange in the adjacent figure). Included is the status quo with regards supply to the area as well recommendations on the development of infrastructure to meet future needs. i Focus Area Purpose Volume 3 summarises the uMkhomazi System (Section 9; illustrated in purple in the adjacent figure) current water resource situation and water supply infrastructure, the status quo on supply to the area and recommendations on the development of infrastructure to meet future needs. Volume 4 reports on the South Coast System (Section 10; shown in red in the adjacent figure) with regards to the current water resource situation and water supply infrastructure, the status quo on supply to the area and recommendations on the development of infrastructure meet future needs. ii Focus Area Purpose Volume 5 provides a description of the North Coast System (Section 11; illustrated in green in the adjacent figure) water resource situation and water supply infrastructure, the status quo on supply to the area and recommendations on the development of infrastructure meet future needs. Volume 6 describes the wastewater works currently operated by Umgeni Water (shown in pale brown in the adjacent figure) and plans for development of additional waste water treatment facilities. iii Figure i Umgeni Water Infrastructure Master Plan 2018/2019 report structure. iv It is important to note that information presented in this report is in a summarised form and it is recommended that the reader refer to the relevant planning reports if more detail is sought. Since the primary focus of this Infrastructure Master Plan is on Umgeni Water’s existing bulk infrastructure supply network, the water resource infrastructure development plans are not discussed at length. The Department of Water and Sanitation (DWS), as the responsible authority, has undertaken the regional water resource development investigations within Umgeni Water’s area of operation. All of these investigations have been conducted in close collaboration with Umgeni Water and other major stakeholders in order to ensure that integrated planning occurs. Details on these projects can be obtained directly from DWS, Directorate: Options Analysis (East). The Infrastructure Master Plan is a dynamic and evolving document. Outputs from current planning studies, and comments received on this document will therefore be taken into account in the preparation of the next update. v TABLE OF CONTENTS Preface ..................................................................................................................................................... i Table of Contents ................................................................................................................................... vi List of Figures ........................................................................................................................................ vii List of Tables .......................................................................................................................................... ix List of Acronyms ...................................................................................................................................... x List of Units .......................................................................................................................................... xiii 12. Wastewater ................................................................................................................................ 1 12.1 Overview ................................................................................................................................ 1 12.2 Umgeni Water Owned Wastewater Works ........................................................................... 4 12.2.1 Darvill Wastewater Works ................................................................................................ 4 12.2.2 Ixopo Wastewater Works ................................................................................................ 10 12.2.3 Albert Falls North and South Wastewater Works ........................................................... 14 12.3 Umgeni Water Operated Wastewater Works ..................................................................... 17 12.3.1 Howick Wastewater Works ............................................................................................. 17 12.3.2 Mpophomeni Wastewater Works ................................................................................... 21 12.3.3 Lynnfield Park Wastewater Works .................................................................................. 23 12.3.4 Mpofana Wastewater Works .......................................................................................... 25 12.3.5 Appelsbosch Wastewater Works .................................................................................... 29 12.3.6 Cool Air Wastewater Works ............................................................................................ 32 12.3.7 Camperdown Wastewater Works ................................................................................... 35 12.3.8 Richmond Wastewater Works ........................................................................................ 39 12.4 Recommended Projects....................................................................................................... 43 12.4.1 Darvill Wastewater Works Upgrade ................................................................................ 43 12.4.2 Mpophomeni Wastewater Works Upgrade .................................................................... 47 12.4.3 Trust Feeds Wastewater Works ...................................................................................... 50 12.4.4 Richmond Wastewater Works Upgrade .......................................................................... 53 12.4.5 Mpofana Wastewater Works Upgrade ........................................................................... 56 12.4.6 Mkhambathini Wastewater Works Upgrade .................................................................. 58 References ............................................................................................................................................... I Acknowledgements ................................................................................................................................. II vi LIST OF FIGURES Figure i Umgeni Water Infrastructure Master Plan 2018/2019 report structure. ..................... iv Figure 12.1 Location of Umgeni Water operated WWWs. ............................................................... 2 Figure 12.2 Location of WWWs operated by Umgeni Water. .......................................................... 3 Figure 12.3 Location of Darvill WWW in relation to the collection system. ..................................... 5 Figure 12.4 Average daily inflow (Mℓ/day) to Darvill WWW. ........................................................... 6 Figure 12.5 Projected inflow into Darvill WWW. .............................................................................. 7 Figure 12.6 Analysis of historical production at Darvill WWW (November 2016 to October 2017). ............................................................................................................................. 7 Figure 12.7 Darvill Aeration Basin. .................................................................................................... 9 Figure 12.8 Location of Ixopo WWW. ............................................................................................. 11 Figure 12.9 Clarifier No. 1 Ixopo WWW. ........................................................................................
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