The pre-design of Berenplaat water-treatment works, Rotterdam: additional processes to achieve biologically stable water

• Published in: Journal of the Institution of Water and Environmental Management Vol. 9; no. 4; pp. 344 - 352
• Main Authors: RODMAN, D. J, VAN DE VEER, A. J, HOLMES, J. F
• Format: Conference Proceeding Journal Article
• Language: English
• Published: London Institution of Water and Environmental Management 01-08-1995
• Subjects: Applied sciences; Drinking water and swimming-pool water. Desalination; Exact sciences and technology; Pollution; Water treatment and pollution; Netherlands; Biodegradation; Drinking water treatment; Pilot plant; Ozonization; Ultraviolet radiation; Adsorption; Activated carbon; Disinfection; Sewage treatment plant; Organic compounds
• ISSN: 0951-7359

Biological regrowth in a water distribution system can be avoided by either maintaining a free chlorine residual to suppress growth or controlling conditions which may support growth, or by a combination of both. Micro-organisms will grow in water only if nutrients are present in sufficient amounts; conversely the reduction of biodegradable nutrients in water is vitally important in controlling the regrowth of microorganisms and zooplankton in the distribution system. The measurement of assimilable organic carbon has been developed as a way of evaluating the concentration of biodegradable material which is available to support such biological growth. This paper describes the pilot-plant and full-scale studies carried out at the Berenplaat water-treatment works. Rotterdam to (a) improve disinfection, (b) eliminate the formation of trihalomethanes and other halogenated compounds formed by chlorination, and (c) reduce the final water assimilable organic carbon concentrations to very low levels, so that a high degree of biological stability can be maintained in the distribution system.