Snow disposal

Today, Vodokanal operates eleven permanent snow-melting stations (Snow Melting Stations) and seven permanent technically equipped snow collection points (Snow Collection Points).

The operating principle of the Snow Melting Stations is based on sewage heat (the temperature of around 16°C even in winter) melting the snow collected in the snow collection chambers. Melt water mixed with wastewater is discharged into the sewerage collectors and transported for a full treatment to the wastewater treatment plant. Eleven Melting Stations of Vodokanal are able to melt not less than 66,000m³ of snow per day.

Thus, processing of snow at the permanent snow-melting stations allows to reduce significantly the negative impact on the environment.

The first six Melting Stations were commissioned as early as in 2012.

On 2 February 2017, the 11th permanent snow-melting station was set into operation in sector 27 of Shkiperskiy Protok street. Its capacity is 7,000 m3 of snow per day.

In the winter of 2018-2019, all snow melting stations and snow collection points were equipped with a new system for measuring the volume of snow masses, which principle of operation is based on non-contact laser scanning of snow in the vehicle body. This system allows to determine the volume of the received snow as accurately as possible.

Click here for more information about Melting Stations.

  • Permanent snow-melting station on Oktyabrskaya embankment

  • Before to get into the snow-melting chamber snow is crushed on special macerators.

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Operation of permanent technically equipped snow collection points is a new field of work for Vodokanal.

There are some fundamental differences between the permanent snow-melting stations and permanent technically equipped snow collection points.

 

The permanent technically equipped snow collection points are designed for disposal, storage and processing of snow and snow-and-ice bodies generated after overall cleaning of St. Petersburg territories. Using these systems Vodokanal ensures receiving, storage and melting of snow masses by natural melting processes (including sun heat). Melt waters from the Snow Collection Points being preliminary treated at the local wastewater treatment plant are discharged into the sewerage system and transported to the wastewater treatment plant. Moreover, part of snow from the Snow Collection Points may be transported to the Snow Melting Stations or processed in a mobile snow-melting unit located directly at the Collection Point.

The total output of the Collection Points is 35,500 cubic meters per day.

 

The maximum possible volume of snow to be received by Vodokanal Melting Stations and Collection Points is 101,500 cubic meters of snow per day. It is quite enough to process the snow of St. Petersburg

 

Volumes of the disposed snow by seasons:

During the winter of 2018-2019, Snow Melting Points processed 2,332,036 cubic meters of snow masses, and 1,002,301 cubic meters were delivered to the Collection Points. The first snow was delivered on December 1, 2018, and the last - on April 9, 2019. That was a record-breaking result in terms of the volume of received and disposed snow in the entire history of SUE "Vodokanal of St. Petersburg".

 

In the 2017-2018 season, the first snow was delivered on November 30, 2017, and the last one - on April 9, 2018. The total volume of the disposed snow was 2,277,081 cubic meters.

 

During the 2016-2017 season, from April 5, 2016 to April 19, 2017, Snow Melting Stations and Collection Points processed 1,331,376 cubic meters of snow.

 

In the 2015-2016 season, the first snow was received on November 23, 2015, and the last one on March 16, 2016. The total volume of snow received during that season was 1,433,043.3 cubic meters of snow.

 Since November 2015, stationary engineering-equipped snow collection points have been commissioned. You can find more information about Collection Points here.

 The 2014-2015 season began on December 13, 2014, and ended traditionally on April 15, 2015. In total, 632,460 cubic meters of snow were disposed during that season.

 During the 2013-2014 season – from December 2, 2013 to April 15, 2014 – about 111 thousand cubic meters were processes at ten Snow Melting Stations.

 The first season of the Snow Melting Stations began on October 31, 2012. Totally, 727,751.9 cubic meters of snow were processed at six Melting Stations in 2012 -2013. On April 15, 2013, Melting Stations went on "vacation".