№1|2014

WASTEWATER NETWORKS

bbk 000000

UDC 628.21:62-192

GALPERIN E. M.

Ways of improving the integrity of wastewater network

Summary

The analysis of the main wastewater network failures is given. The data from foreign literature on blockage frequency depending on the pipe diameter is presented; for the classification of pipes by blockage risk level an index, i. e. genera­lized risk factor is suggested. The index stating the annual number of blockages per 1 km of a sewer of a certain diameter is more acceptable. Periodic maintenance, running or capital repair is a necessary requirement of the operation of any facility. Draining the pipe section under repair is a crucial stage from the point of view of the network integrity. It is suggested instead of one big sewer to lay two parallel sewers with total throughput capacity equal to that of the replaced one. The use of reinforced concrete pipes made of cement fondu characterized by the high corrosion resistance, long lifetime and abrasion resistance is considered. Savings from operation of reinforced concrete sewers made of cement fondu can compensate for its high cost. Polyvinylchloride is a perspective material for sewer production. The attention is drawn to the need of improving standards and regulatory documents related to the sewer maintenance.

Key words

, , , ,

The further text is accessible on a paid subscription.
For authorisation enter the login/password.
Or subscribe

REFERENCES

  1. Evilevich A. Z. Oshibki v ekspluatatsii vodoprovodov i kanalizatsii [Errors in maintaining water supply and sewage pipelines]. Leningrad, Izdatel’stvo literatury po stroitel’stvu Publ., 1972, 121 p.
  2. Ugarelli R., Kristensen S. M., Rstum J., Sgrov S., Di Federico V. Statistical analysis and definition of blockages-prechetion formulae for the wastewater network of Oslo by evolutionary computing. Water and Technology, 2009, no. 59 (8), pp. 1457–1470.
  3. Hafskjold L. S., Knig A., Sgrov S., Schilling W. Improved assessment of sewer pipe condition: 19th European Junior Scientist Workshop on «Process Data and Integrated Urban Water Modelling». 11–13 March 2004, Meaux la Montagne, France.
  4. Kantor P. L., Asianova V. S., Latypov V. M. [The efficiency of the secondary protection of reinforced concrete sewers]. Promyshlennoe i Grazhdanskoe Stroitel’stvo, 2011, no. 12, pp. 65–66. (In Russian).
  5. Wiezzbicki K., Szymiczek M. Mechanical and chemical properties of sewer pipes. Archives of Materials Science and Engineering. January, 2012, issue 1, v. 53, pp. 540–548.
  6. Guidelines for condition assessment and rehabilitation of large sewers. Canada, Published by Institute for research in construction National Research Council, 2001.
  7. Neparidze R. Sh., Mordiasov M. A., Khusainov U. G. [Problems of big sewer maintenance and repair]. Chistyi gorod, 2003, January-March, no. 1 (21), pp. 30–39. (In Russian).
  8. Gal’perin E. M., Gostev A. B., Strelkov A. K., Plekhanov A. G. [On the reliable operation of a waste­water network]. Voda i Ekologiia: Problemy i Resheniia, 2007, no. 2 (31), pp. 50–57. (In Russian).

vstmag engfree 200x100 2

mvkniipr ru

Российская ассоциация водоснабжения и водоотведения

Конференция итог

ecw20 200 300

VAK2