Effect Of Physical And Chemical Parameters On
Water Treatment Plant Effluent Quality (particle
Count And Particle Size)
Author(s)
A. Torabian, A. Hesam Hasani & A. R. Mehrabadi
Abstract
The city of Tehran uses surface water to supply drinking water to a population of
more than 10 million people via five large water treatment plants. Tehran’s water
treatment plants consist of pre-treatment, coagulation, flocculation, filtration and
disinfection units (conventional treatment). The plants’ effluent quality is in
compliance with WHO standards. Drinking water standards these days are
getting more stringent because of our knowledge about pollutants and the
development in measurement instruments. Meeting new drinking water standards
that will be enforced by regulatory agencies in the future is a challenge to the
water industry. Removal of micro organisms such as Giardia, Cryptosporidium,
DBD, TOC and particle size and particle count are playing a more important role
in new standards.
In this experimental study a conventional pilot plant was designed, built and
used during a period of six months to study the effect of type and dose of
coagulant, filtration rate on particle count and particle size of treated water.
Particle size and count is a surrogate measure for the removal of pathogens such
as bacteria, viruses, Giardia, Lambia, and Cryptosporidium.
The results of this study indicated that the filtration rate and type of coagulant
dosage has more effect than the other operational parameters on overall effluent
quality and on particle size and count.
Keywords: drinking water quality standards, particle size and count.
Keywords
drinking water quality standards, particle size and count.
Related Book
Other papers in this volume
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