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Sustainability of roughing filters in Sri Lanka

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conference contribution
posted on 12.02.2018, 15:09 by J.M.J.C. Jayalath
Roughing filters of various types and shapes, such as Up flow, Down flow and Horizontal flow are operated in Sri lanka. Performance of some the filters was evaluated to assess the sustainability of filters and find out what improvements are needed for efficient operation of the filters in future. The recent observations show that rectangular type Up flow & Down flow filters have been sustainably managed for several years of operation where a proper maintenance schedule is used with a trained care taker. The circular filters of large diameter have some operational problems due to short-circuiting and inefficient hydraulic cleaning. The major problems affecting the sustainability are due to the design problems associated with filtration velocity, scouring velocity, uniform distribution of inflows and some operational problems such as operation manuals, training and operator’s commitments. Even though roughing filtration is a simple technology which can be simply managed, it needs constant care and monitoring for efficient operation and sustainability.

History

School

  • Architecture, Building and Civil Engineering

Research Unit

  • Water, Engineering and Development Centre (WEDC)

Published in

WEDC Conference

Citation

JAYALATH, J.M.J.C., 2006. Sustainability of roughing filters in Sri Lanka. IN: Fisher, J. (ed). Sustainable development of water resources, water supply and environmental sanitation: Proceedings of the 32nd WEDC International Conference, Colombo, Sri Lanka, 13-17 November 2006, pp. 366-368.

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

2006

Notes

This is a conference paper.

Other identifier

WEDC_ID:13139

Language

en

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