Search Results - "Hirvonen, Arja"

Impact of UV disinfection on microbially available phosphorus, organic carbon, and microbial growth in drinking water by Lehtola, Markku J, Miettinen, Ilkka T, Vartiainen, Terttu, Rantakokko, Panu, Hirvonen, Arja, Martikainen, Pertti J

“…UV irradiation at a wavelength of 253.7 nm (UV 254) is commonly used for drinking water disinfection. UV radiation is known to convert organically combined…”
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The effects of changing water flow velocity on the formation of biofilms and water quality in pilot distribution system consisting of copper or polyethylene pipes by Lehtola, Markku J., Laxander, Michaela, Miettinen, Ilkka T., Hirvonen, Arja, Vartiainen, Terttu, Martikainen, Pertti J.

“…We studied the effects of flow velocity on the formation of biofilms and the concentration of bacteria in water in copper and plastic (polyethylene, PE) pipes…”
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Effects of reaction conditions on nuclear laundry water treatment in Fenton process by Vilve, Miia, Hirvonen, Arja, Sillanpää, Mika

“…This study presents the efficiency of Fenton process in the degradation of organic compounds of nuclear laundry water. The influence of Fe 2+ and hydrogen…”
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Microbiology, chemistry and biofilm development in a pilot drinking water distribution system with copper and plastic pipes by Lehtola, Markku J., Miettinen, Ilkka T., Keinänen, Minna M., Kekki, Tomi K., Laine, Olli, Hirvonen, Arja, Vartiainen, Terttu, Martikainen, Pertti J.

“…We studied the changes in water quality and formation of biofilms occurring in a pilot-scale water distribution system with two generally used pipe materials:…”
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Removal of Chlorinated Ethylenes in Contaminated Ground Water by Hydrogen Peroxide Mediated Oxidation Processes by Hirvonen, Arja, Tuhkanen, Tuula, Kalliokoski, Pentti

“…Treatability of ground water contaminated with TCE and PCE by two hydrogen peroxide mediated oxidation processes (O 3 /H 2 O 2 and UV/H 2 O 2 ) were studied in…”
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Pipeline materials modify the effectiveness of disinfectants in drinking water distribution systems by Lehtola, Markku J., Miettinen, Ilkka T., Lampola, Tiia, Hirvonen, Arja, Vartiainen, Terttu, Martikainen, Pertti J.

“…We studied how pipe material can modify the effectiveness of UV- and chlorine disinfection in drinking water and biofilms. This study was done with two pipe…”
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Formation of hydroxylated and dimeric intermediates during oxidation of chlorinated phenols in aqueous solution by Hirvonen, Arja, Trapido, Marina, Hentunen, Johanna, Tarhanen, Juhani

“…The oxidation of selected chlorophenols (2-chlorophenol, 4-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, 2,3,4,6-tetrachlorophenol and…”
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Evaluating online data of water quality changes in a pilot drinking water distribution system with multivariate data exploration methods by Mustonen, Satu M., Tissari, Soile, Huikko, Laura, Kolehmainen, Mikko, Lehtola, Markku J., Hirvonen, Arja

“…The distribution of drinking water generates soft deposits and biofilms in the pipelines of distribution systems. Disturbances in water distribution can detach…”
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Estimates of microbial quality and concentration of copper in distributed drinking water are highly dependent on sampling strategy by Lehtola, Markku J., Miettinen, Ilkka T., Hirvonen, Arja, Vartiainen, Terttu, Martikainen, Pertti J.

“…The numbers of bacteria generally increase in distributed water. Often household pipelines or water fittings (e.g., taps) represent the most critical location…”
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Evaluating Online Data of Water Quality Changes in a Pilot Drinking Water Distribution System with Multivariate Data Exploration Methods by Mustonen, Satu M, Tissari, Soile, Huikko, Laura, Kolehmainen, Mikko, Lehtola, Markku J, Hirvonen, Arja

“…The generation of pressure shocks to create disturbances in a pilot-scale drinking water distribution system was presented. The water quality of the pilot…”
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The Effects of Changing Water Flow Velocity on the Formation of Biofilms and Water Quality in Pilot Distribution System Consisting of Copper or Polyethylene Pipes by Lehtola, Markku J, Laxander, Michaela, Miettinen, Ilkka T, Hirvonen, Arja, Vartiainen, Terttu, Martikainen, Pertti J

“…The effects of changing water flow velocity on the formation of biofilms and water quality in pilot distribution system consisting of copper or polyethylene…”
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Ozonation, Ozone/UV and UV/H2O2 Degradation of Chlorophenols by Trapido, Marina, Hirvonen, Arja, Veressinina, Yelena, Hentunen, Johanna, Munter, Rein

“…The performance of the O 3 , O 3 /UV and UV/H 2 O 2 processes for degradation of six chlorophenols (4-chlorophenol, 2-chlorophenol, 2,4-dichlorophenol,…”
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Formation of chlorinated acetic acids during UV/H2O2-oxidation of ground water contaminated with chlorinated ethylenes by Hirvonen, A, Tuhkanen, T, Kalliokoski, P

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Treatment of TCE- and PCE contaminated groundwater using UV/H2O2 and O3/H2O2 oxidation processes by Hirvonen, Arja, Tuhkanen, Tuula, Kalliokoski, Pentti

“…The feasibility of O3/H2O2 and UV/H2O2 treatments for the purification of groundwater contaminated with trichloroethylene (TCE) and tetrachioroethylene (PCE)…”
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Formation of chlorinated acetic acids during UV/H 2O 2-oxidation of ground water contaminated with chlorinated ethylenes by Hirvonen, Arja, Tuhkanen, Tuula, Kalliokoski, Pentti

“…The performance of the UV/H 2O 2 process for purification of ground water contaminated with tri- and tetrachloroethylene was studied by measuring the formation…”
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Treatment of TCE- and PCE-contaminated groundwater using UV/H2O2 andO3/H2O2 oxidation processes by Hirvonen, Arja, Tuhkanen, Tuula, Kalliokoski, Pentti

“…The feasibility of O3/H2O2 and UV/H2O2 treatments the purification of groundwater contaminated with trichloroethylene (TCE) and tetrachloroethylene (PCE) was…”
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Formation of Chlorinated Acetic Acids During UV/H sub(2)O sub(2)-Oxidation of Ground Water Contaminated with Chlorinated Ethylenes by Hirvonen, Arja, Tuhkanen, Tuula, Kalliokoski, Pentti

“…Hydrogen peroxide-mediated photodegradation was investigated for the removal of trichloroethylene and tetrachloroethylene in contaminated groundwaters. The…”
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Ozonation, Ozone/UV and UV/H 2 O 2 Degradation of Chlorophenols by Trapido, Marina, Hirvonen, Arja, Veressinina, Yelena, Hentunen, Johanna, Munter, Rein

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Treatment of TCE- and PCE-Contaminated Groundwater Using UV/H sub(2)O sub(2) and O sub(3)/H sub(2)O sub(2) Oxidation Processes by Hirvonen, Arja, Tuhkanen, Tuula, Kalliokoski, Pentti

“…Advanced oxidation process are based on the generation of reactive hydroxyl radicals whose oxidizing power highly exceeds their precursors. Laboratory- and…”
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Ozonation, Ozone/UV and UV/H sub(2)O sub(2) Degradation of Chlorophenols by Trapido, Marina, Hirvonen, Arja, Veressinina, Yelena, Hentunen, Johanna, Munter, Rein

“…Laboratory reactor experiments were used to evaluate the performance of ozonation, ozone/UV, and UV/hydrogen peroxide techniques for the degradation of six…”
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