Abstract
Ozone, due to its strong oxidizing properties, is often used in high efficiency water treatment processes. It is not only used for water disinfection, but also for carboxylic acid, a product of its reaction, which highly contributes towards increasing biodegradability of organic substances in water, thus leading to higher quality of drinking water. This paper presents results of using mobile ozone devices as a way of local microorganisms elimination and sediments removal from WSS.
Highlights
Most waters intended for drinking by man that are taken in, both underground and surface waters, require more or less complex water treatment processes
One of such processes is oxidation, which is performed for many purposes, for instance [1-5]: − removal of iron, manganese and nitrogen compounds from water, − removal of hydrogen sulphide and sulphides from water, − oxidation of compounds causing water to have colour, taste and odour, − oxidation of micro-contaminations and natural organic matter, − neutralisation of phytoplankton and zooplankton, − facilitation of coagulation as a result of colloid destabilisation, − disinfection of water
In Poland, in 1959 – nearly 66 years after ozone was used in Dutch waterworks for the first time, ozone-based water disinfection was implemented in the waterworks of Kraków, in the Bielany water treatment plant
Summary
Most waters intended for drinking by man that are taken in, both underground and surface waters, require more or less complex water treatment processes. The biofilm forming in the water pipes network is a considerable habitat of microorganisms, including pathogenic ones In those circumstances, changing hydraulic conditions of use of water pipe network increase the risk of microbiological water contamination. This can be exemplified by a range of cases where biologically contaminated water, with coli group bacteria, Escherichia coli bacteria or Enterococcus faecalis bacteria, was supplied to consumers [11, 13-19]. A significant part of this method is first and foremost short time required for effective disinfection of waterworks, which can translate into a considerably shorter time of water supply stoppage after its secondary biological contamination
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