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UDC 628.27

Vasilyev V. M., Morozov G. V., Zhukov S. V.

Problems in sewer network operation and ways of their elimination


The main problems arising during the operation of sewer networks – blockages, network deterioration and odors are highlighted. The causes of their occurrence are considered and methods of their elimination are proposed. Under the conditions of Russia blockages are most likely to occur as a result of errors in design and erection. These are violation of the pipe turnout grade, pipe diameter mismatch, turnout grade fault because of soil movement, unsatisfactory state of sewer and pipeline failure. Design and erection errors and low cultural level of the users of the sewer system can lead to the emission of high concentrations of hydrogen sulfide. Any blockage in the sewerage system is accompanied by foul odor above ground that is explained by the emission of hydrogen sulfide. By using advanced computer aids it is possible to keep account of all the factors that affect the useful life of sewers. Systematization of the obtained data and its further use provide for extending the pipe life and reduce the expenditures for renovation and maintenance of sewers. The paper is written on the basis of designing and operating the sewer networks in Saint-Petersburg.

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