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UDC 628.334

Shchetinin A. I., Marchenko Yu. G.

Up-To-Date Equipment and Facilities for Mechanical Treatment of Wastewater from Coarse-Disperse Admixtures

Summary

Up-to-date equipment for wastewater treatment from coarse-disperse admixtures is considered. Designs of screens are described briefly, their advantages and shortcomings are presented. Formulas for calculation of head loss on sreens are presented. Recommendations to install screens with openings not less than 5 mm are made. The comparative analysis of different methods of sand-catchers design shows that the normative time of stay in sand catchers can be extended up to 10 minutes. Literary data treatment has made it possible to obtain formulas offered as a new calculation base for determination of efficiency of horizontal and aerated sand catchers during the designing. Up-to-date equipment for sand collection and removal is considered.

Key words

aeration tank , hydrocyclone , mechanical treatment , sand catchers , screens , wastewater

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SPISOK LITERATURY

1. Kanalizacija naselennyh mest i promyshlennyh predprijatij: Sprav. proektirovshhika / Pod. red. Samohina V. N. – M.: Strojizdat, 1981.
2. «Degremon». Tehnicheskij spravochnik po obrabotke vody: Pod red. Alekseeva M. I., Ivanova V. G., Kurganova A. M. i dr. – SPb: Novyj zhurnal, 2007.
3. Qasim S. R. Wastewater treatment plants. Planning, design and operation. – Lancaster–Basel: Technomic Publish Co, 1999.
4. Tchobanoglous G., Burton F. L., Stensel H. D. Wastewater engineering – treatment and reuse (4th edition): Metcalf and Eddy.– New York: McGraw-Hill, 2003.
5. ATV-Handbuch. Mechanische abwasserreinigung. 4 Auflage. – Berlin: Verlag Ernst & Sohn, 1997.
6. Jakovlev S. V., Karelin Ja. A., Zhukov A. I., Kolobanov S. K. Kanalizacija: Uchebnik dlja vuzov. – M.: Strojizdat, 1975.
7. SNiP 2.04.03-85. Kanalizacija. Naruzhnye seti i sooruzhenija. – M.: Strojizdat, 1986.
8. Metcalf L., Eddy H. P. American sewerage practice. – New-York: MGraw-Hill, 1935. V. 3.
9. Screening and grit removal. Wastewater technology fact sheet – U.S. EPA 832-F-99-040, 1999.
10. ATV-Arbeitsbericht sandabscheideanlagen // Korrespondentz Abwasser. 1998. Bd. 45 (3).
11. Stein A. Ein Beitrag zur Bemessung belufteter Sandfange kommunaler Klaranlagen. – Institut fur Wasserwesen, Mitteilungen, 1992. Bd. 37.
12. Londong J. Dimenshioning of aerated grit chambers and use as a hihighly loaded activaned sludge process // Water Science and Technology. 1989. V. 21.
13. Albrecht A. E. Aerated grit operation, design and chamber // Water Sewage Works. 1967. № 114 (9).
14. Sawicki J. M. Aerated Grit Chambers Hydraulic Design Equation // Journal of Environmental Engineering ASCE. 2004. September.