Ozone water treatment with

Wang, L.K. Recent Development in Cooling Water Treatment with Ozone Lenox Institute of Water Technology Lenox, MA, 1988 Technical Report No. LIR/03-88/285, 237 p., March. 

Glaze W H (1987) Drinking water treatment with ozone, Environmental Science Technology 21 224-230. 

Since deacetylation of LXXXII and subsequent ozonization and treatment with water afforded glyoxal (isolated as the phenylosazone) it followed that the ethylenic linkage must be between carbon atoms 2 and 3.204 Reduction of LXXXII, followed by deacetylation, yields ethyl 2,3-didesoxy-D-alloside (LXXXIII). Alternatively, LXXXI could be converted into 4,6-diacetyl-2,3-didesoxy-D-allose, which on glycosidation as above yielded ethyl 4,6-diacetyl-2,3-didesoxy-D-alloside. In this instance the product was a mixture of isomers, since on deacetylation, two forms (m. p. 72-72.5° and 90°, respectively) were isolated. Derivatives of 2,3-didesoxy-L-ribose81 have been prepared from 3,4-diacetyl-L-arabinal,... 

Gahr A, Niessner R. Drinking water treatment with ozone in combination with UV-radiation removal of pesticides and by-product formation. Proceedings of 12th Ozone World Congress, Lille, France, 1995 349-371. 

Up to now, ozonation of drinking water has been considered too difficult, especially in comparison with chlorination. The outlay for the relatively expensive installations and the high costs of operation were objectionable. In most cases the plants have seemed unprofitable. It appears, moreover, that all the European ozonation plants still employ water-treatment processes which do not permit proper utilization of all the ozone produced by the ozonators. Perhaps 40% of the ozone is lost because of the difficulty of dissolving the gas in the water with the available means. On the other hand, there is no doubt of the actual efficacy of the ozone water treatment in the French plants in operation. 

Today in addition to Paris, many other cities use ozone in production of potable water. Zurich, Switzerland, Florence, Italy, Brussels, Belgium, Marseille, France, Singapore and Moscow, Russia all have ozone water treatment plants. In Europe many swimming pools, both public and private use ozone in place of chlorine. With ozone, no salts are added to the water, so that in addition to a high level of sterility, the acidity (pH) is easier to control. In the United States, ozone s use is limited, but LaSalle, Illinois has a relatively new ozone water treatment facility. ... 

Edwards, H.B. and Sellers, R.L., 1991, Industrial cooling water treatment with ozone. Conf Proc. Ozone in the Americas. Additional symposium on ozone treatment of cooling waters. Int. Ozone Assn. Toronto, 433 - 468. 

Cooling water treatment with ozone by Hoechst AG) (in German)... 

Ozone has been used eontinuously for nearly 90 years in municipal water treatment and the disinfeetion of water supplies. This praetiee began in Franee, then extended to Germany, Holland, Switzerland, and other European countries, and in reeent years to Canada. Ozone is a strong oxidizing substance with baetericidal properties similar to those of ehlorine. In test conditions it was shown that the destruetion of baeteria was between 600 and 3,000 times more rapid by ozone than by ehlorine. Further, the baeterieidal aetion of ozone is relatively unaffeeted by ehanges in pH while ehlorine effieaey is strongly dependent on the pH of the water. 

Simultaneous treatment of water with UV and ozone results in higher microorganism kill than independent treatment with both UV and ozone. 

Acero JL, K Stemmier, U van Gunten (2000) Degradation kinetics of atrazine and its degradation products with ozone and OH radicals a predictive tool for drinking water treatment. Environ Sci Technol 34 591-597. 

The most obvious change in an oxidation of the PP surface results in an increase in the wettability of the polymer. The PP shows a great decrease in contact angle with water or water/alcohol (3 1) after treatment with ozone or ozone-UV irradiation or atomic oxygen (Table 1). 

Gardner and Yates [26] developed a method for the determination of total dissolved cadmium and lead in estuarine waters. Factors leading to the choice of a method employing extraction by chelating resin, and analysis by carbon furnace atomic absorption spectrometry, are described. To ensure complete extraction of trace metals, inert complexes with humic-like material are decomposed by ozone [27]. The effect of pH on extraction by and elution from chelating resin is discussed, and details of the method were presented. These workers found that at pH 7 only 1-2 minutes treatment with ozone was needed to completely destroy complexing agents such as EDTA and humic acid in the samples. 

Ozocarb A process for purifying municipal drinking water by treatment with ozone, hydrogen peroxide, and activated carbon. Developed by Trailigaz, a subsidiary of Compagnie General des Eaux. 

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