№1|2017

SEWERAGE NETWORKS

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UDC 628.23

Vasilyev V. M., Malkov A. V., Klementyev M. N.

Places of corrosive gas generation in the sewerage network

Summary

The factors that affect the generation of corrosive gases in the wastewater disposal system, saturation of the gas air environment with corrosive gases in sewers are considered. A number of structural components as well as hydraulic patterns of wastewater flow, its physical properties that enhance the gas generation processes are considered and described. The evaluation and prediction of the places of corrosive gas generation and emission provide for forecasting the measures focused on the reduction of the negative impact of emissions or their complete elimination. The operating services carry out regular sewer network monitoring with the purpose of detecting the places of emission generation. The future work of the services is limited to the isolation of corrosive gases by redistribution in the network, disposal into the atmosphere, neutralization or purification. The results of introducing the design of a pipe drop with a dead blanking in the lower part of the sewer shaft, ejector and pipe air vent are presented.

Key words

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REFERENCES

  1. Pankova G. A., Klement’ev M. N. [The experience of operating sewer tunnels in St. Petersburg]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2015, no. 3, pp. 55–61. (In Russian).
  2. Vasil’ev V. M., Malkov A. V. [Detecting the places of corrosive gas emissions from sewers to the surface and conditions of their formation]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2016, no. 10, pp. 59–66. (In Russian).
  3. Drozd G. Ia. [Corrosion damage, prediction of the aggressiveness of the operational environment and ensuring the integrity of sewers at the design stage]. Voda i Ekologiia. Problemy i Resheniia, 2013, no. 1, pp. 40–56. (In Russian).
  4. Vasil’ev V. M. [On the calculation of the free ventilation of sewers]. Podzemnoe Prostranstvo Mira, 1994, no. 1, p. 31. (In Russian).
  5. Vasil’ev V. M. [Gas emission in drop devices and sewer sections during liquid flowing]. Podzemnoe Prostranstvo Mira, 1995, no. 1, p. 35. (In Russian).
  6. Vasil’ev V. M., Il’ina O. M. [Gas emission in drop devices and sewer sections during liquid flowing]. Novye Tekhnologii i Materialy v Podzemnom Stroitel’stve. Yearbook of scientific and technical information, 1995, Issue 1, p. 35. (In Russian).
  7. Vasil’ev V. M., Pankova G. A., Stolbikhin Iu. V. [Destruction of sewer tunnels and their structures as a result of microbiological corrosion]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2013, no. 9, pp. 55–61. (In Russian).
  8. Wells T., Melchers R. E. Modelling concrete deterioration in sewers using theory and field observations. Cement and Concrete Research, 2015, no. 77, pp. 82–96.
  9. Vasil’ev V. M., Dmitrieva E. Iu. [Present-day concept of microbiological destruction of concrete and metals in the operation of sewers]. Proceedings of «Environmental engineering systems» International Scientific and Practical Conference. St. Petersburg, SpbGASU Publ., 2012, pp. 24–26. (In Russian).
  10. Stolbikhin Iu. V. Razrabotka metodov predotvrashcheniia korrozii kanalizatsionnykh kollektorov i sooruzhenii na osnove sover­shenstvovaniia kamer gasheniia napora [Development of methods of preventing corrosion of sewers and their structures on the basis of improving the pressure stilling basins. Ph. D. thesis in Engineering Science. St. Petersburg, 2016, 227 p.].
  11. Xiaoyan Sun, Guangming Jiang, Bond Ph. L. , Keller J. Impact of fluctuations in gaseous H2S concentrations on sulfide uptake by sewer concrete: The effect of high. Water Research, 2015, no. 81, p. 84.
  12. Vasil’ev V. M., Vasil’ev F. V. [Pat. 2394965, RF. IPC E03F 5/00. Sewer shaft (options)]. Izobreteniia. Poleznye Modeli, 2010. (In Russian).

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