№05|2015

DRINKING WATER SUPPLY

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UDC 628.321

Riabchikov Boris, Larionov S. Iu., Panteleev Aleksei, Shilov Mikhail

The study of enhanced water coagulation with the use of microsand

Summary

The results of the analysis of the present day advanced water coagulation equipment are presented. The results of the study showed that using the systems with sludge recycling and microsand addition was the most efficient solution. Because of the lack of reliable data on the efficiency of the given equipment, operational mode and chemical consumption, experimental units were designed that provided for testing the required modes and significant improving the process. Using sand from a packed column equipped with airlift for wa­shing produced good results. Sand loss was less than 1%. In the process of the experimental studies it was shown that the effect of fast precipitation in the clarifier at high linear water flow rate was possible. However, the use of static chemical mixing systems does not provide for the sustainable unit operation with changing parameters – flow rate, stock solution concentration, and temperature. For that reason the unit was upgraded following Actiflo option with the use of mechanical mixers for mixing with chemicals and sand, however, with sand and sludge separation in the plate column equipped with a pulsation system to improve the wash efficiency. The designed flowsheet of sludge separation into microsand and sludge with the help of a packed column showed significant advantages compared to the system with hydrocyclones. On the basis of the obtained data terms of reference for designing a pilot unit were developed.

Key words

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REFERENCES

  1. Panteleev A. A., Riabchikov B. E., Larionov S. Iu., Zhadan A. V., Shilov M. M. [Equipment for water treatment with precipitation methods. Part 1. Trend of improving home equipment]. Vodosnabzhenie i Kanalizatsiia, 2013, no. 3–4, pp. 100–113. (In Russian).
  2. Panteleev A. A., Riabchikov B. E., Larionov S. Iu., Zhadan A. V., Shilov M. M. [Equipment for water treatment with precipitation methods. Part 2. Most efficient international solutions]. Vodosnabzhenie i Kanalizatsiia, 2013, no. 5–6, pp. 68–77. (In Russian).
  3. Riabchikov B. E. Sovremennaia vodopodgotovka [Advanced water treatment. Moscow, DeLi Plius Publ., 2013, 680 p.].
  4. Draginskii V. L., Alekseeva L. P., Getmantsev S. V. Koaguliatsiia v tekhnologii ochistki prirodnykh vod [Coagulation in natural water treatment technology. Moscow, Nauchnoe Izdatel’stvo Publ., 2005, 576 p.].
  5. Vol’ftrub L. I., Korabel’nikov V. M., Gudoshnikova A. E. [Experience of modernization of settling tanks and clarifiers at water treatment stations]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2010, no. 5, pp. 47–52. (In Russian).
  6. Panchenko V. V., Khramchikhin A. M., Chernyshev E. V., et al. [Firstlings of operating a clarifier of a new design with sludge recycling]. Energetik, 2001, no. 2, pp. 32–33. (In Russian).
  7. Shemiakin Iu. V., Podkovyrov V. P., Strikhar Iu. V., Arutiunova I. Iu., Iagunkov S. Iu. [The technology of high-speed water clarification with the use of microsand]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2011, no. 10, pp. 12–19. (In Russian).
  8. Vinogradov V. N., Smirnov B. A., Zhadan A. V., Avan V. K. [Improving the efficiency of clarifiers for water coagulation]. Teploenergetika, 2010, no. 8, pp. 14–16. (In Russian).
  9. Pilotnye ispytaniia ustanovki po koaguliatsii iskhodnoi vody kompanii OTV na Pskovskoi GRES [Pilot tests of OTV installation for raw water coagulation at the Pskov regional power station.
  10. http://www.ogk2.ru/rus/branch/pskovskaya/news/?ID=6564 (accessed 2.04.2015)]. Osvetliteli kompanii «Voronezh-Akva» [«Voronezh-Aqua» clarifiers. http://www.voronezh-aqua.ru/osvetliteli (accessed 2.04.2015)].
  11. Karpacheva S. M., Riabchikov B. E. Pul’satsionnaia apparatura v khimicheskoi tekhnologii [Pulsation devices in chemical engineering. Moscow, Khimiia Publ., 1983, 224 p.].

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