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Dual water supply in Hong Kong

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conference contribution
posted on 2018-02-12, 15:07 authored by S.L. Tang
Not many coastal cities in the world use dual water supply systems (fresh/sea water systems in two separate distribution networks) for potable and non-potable (e.g. toilet flushing, fire fighting, etc.) uses, although these are currently being operated satisfactorily in several locations world-wide (DFID, 1997). A study on the effectiveness of using seawater for non-potable purpose and how the consumption of potable water can be reduced was carried out four years ago (Smith, Stear and Parr, 1996). Its conclusion was that dual water supply systems could become an increasingly viable option for large urban areas in coastal zones. Hong Kong is one of those few cities using the dual systems, and the systems have been available since the 1950’s. The objectives of this paper are to describe the implementation of the dual water supply systems in Hong Kong and evaluate the effectiveness of the systems. Since the used water will enter the wastewater sewerage system, therefore the effect of the mixed wastewater (fresh/salt) treatment in biological sewage treatment works will also be addressed.

History

School

  • Architecture, Building and Civil Engineering

Research Unit

  • Water, Engineering and Development Centre (WEDC)

Published in

WEDC Conference

Citation

TANG, S.L., 2000. Dual water supply in Hong Kong. IN: Pickford, J. (ed). Water, sanitation and hygiene - Challenges of the Millennium: Proceedings of the 26th WEDC International Conference, Dhaka, Bangladesh, 5-9 November 2000, pp.364-366.

Publisher

© WEDC, Loughborough University

Version

  • VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2000

Notes

This is a conference paper.

Other identifier

WEDC_ID:10350

Language

  • en

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    WEDC 26th International Conference

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