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2 results on '"water treatment plant"'

1. Analysis of the Use of Fresh Water in the Russian Federation.

Author

Kulentsan, A. L. and Marchuk, N. A.

Subjects
*FRESH water, *WATER use, *WATER pollution, *WATER supply, *BODIES of water, *AGRICULTURAL water supply
Abstract

Input of wastewater-borne pollutants to the water bodies of the Russian Federation were investigated, and the use of fresh water in Russia was analyzed. The dynamics of the input of pollutants to the water bodies over the period from 1993 to 2020, as well as that of the use of fresh water for the needs of industry, household and drinking water supply, and irrigation and agricultural water supply in the territory of the Russian Federation were analyzed. Mathematical models that adequately reflect the changes in the investigated parameters were selected. The forecast of the inputs of wastewater-borne phenols, lead, mercury, chlorides, sulfates, nitrates, and fats and oils to the water bodies of the Russian Federation, as well as the forecast of the use of fresh water for the needs of household and drinking water supply, irrigation and agricultural water supply, and industry for the year 2025 were prepared. [ABSTRACT FROM AUTHOR]

Published
2022
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2. CHLORINE DIOXIDE DISINFECTION OF DRINKING WATER: INSTALLATIONS AND PRACTICES IN RUSSIA.

Author

Krupnova, Tatyana G., Kostryukova, Anastasiya M., Mashkova, Irina V., Schelkanova, Elena E., and Yakupova, Nataliya A.

Subjects
*WATER disinfection, *CHLORINE dioxide, *DRINKING water quality, *WATER pollution, *COAGULANTS
Abstract

Low drinking water quality standards may be explained by inefficient water treatment technology, the use of outdated chemicals as disinfectants and secondary water pollution during its transportation to the ultimate consumer via the poor quality water supply systems. The paper describes chlorine dioxide disinfection technology with the help of DCh-100 at drinking water treatment plant with capacity of 45600 m3/day. DCh-100 type automated unit is made in Russia. The DCh-100 local automated plant producing a highly efficient and economical "Chlorine Dioxide and Chlorine" Compound Disinfectant from readily-available raw materials (sodium chlorate, sodium chloride, and sulfuric acid) for drinking water treatment and disinfection. The optimal chlorine dioxide dosing was identified: 1) During primary chlorination at the stage of pretreatment oxidation (chlorine was used for secondary disinfection). The dose of chlorine dioxide was 0.43-0.85 mg/l at the research season. 2) During two-stage scheme of water disinfection. Chlorine dioxide was used for pretreatment oxidation and secondary disinfection. The dose of chlorine dioxide was 0.30-0.40 mg/l for pretreatment oxidation and 0.15-0.20 mg/l for secondary disinfection process. 3) During one-stage disinfection. The dose of chlorine dioxide 0.26-0.33 mg/l was chosen. For the given disinfecting modes the optimal dosing of coagulants and flocculants was identified. [ABSTRACT FROM AUTHOR]

Published
2016

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