City snow points receive the first snow in the season 2020-2021

12.12.2020

St. Petersburg opened the new season of snow collection and disposal on December 11. The first truck with snow arrived at the permanent snow-melting station at 2, Rybinskaya st.

For the season 2020-2021, Vodokanal has prepared 18 points, 11 of which are permanent snow-melting stations (PSMS) and 7 permanent technically equipped snow collection points (PSCP). The total capacity of all the facilities is 101.5 thousand cubic meters per day.

In total, from 6 pm on December 11 to 6 am on December 12, Vodokanal’s snow-melting and snow collection points received 612.4 cubic meters of snow from the streets of the city.

Snow masses were also delivered to four other snow-melting stations located at 2, Oktyabrskaya emb., Mebelnaya street, 9, Kushelevskaya road, and at section 27, Shkiperskiy Protok. The snow collection point at Obvodniy Canal emb. (south of building 24) was also used.

Snow-melting and snow collection points work around the clock. They are highly loaded at night time when the city improvement services remove snow from the streets and provide its transportation to the snow-melting and snow collection points. SUE "Vodokanal of St. Petersburg" cooperates with St.Petersburg Committee for City Improvement and other city authorities in terms of assigning transportation to PSMS and PSCP depending on their availability.

Snow points are located in almost every administrative district of the city to ensure snow reception and disposal based on transport accessibility.

A system of snow collection points is planned to be developed in the coming years. 

Three potential sites for PSCP first-priority construction have been identified. They are as follows: Obvodny Canal emb. (to the south of building 24);  section 1, Rustaveli st. and 96, Sofiyskaya str. 

Design and survey works for the 7000 m3/day site at Obvodny Canal emb. (to the south of building 24) are planned to be commenced  already in 2021.

***

The operating principle of PSMS is based on sewage heat melting the snow collected in the snow collection chambers. Discharged snow is poured into specialized grinders after which crashed snow masses enter wastewater. The temperature of wastewater is around 16°C even in winter.  Melt water mixed with wastewater is discharged into the sewerage collectors and transported for a full treatment to the wastewater treatment plant.

Processing of snow at the permanent snow-melting stations has a significant positive environmental impact. Snow has the ability to adsorb harmful substances from the atmosphere and to accumulate pollutants contained in vehicle exhaust gases. During snowmelt, soil and water bodies were polluted with heavy metals, oil products, etc. The commissioning of PSMS and PSCP allowed minimizing the above-mentioned harmful influence on the environment.

Moreover, snow disposal to PSMS has significantly reduced the number of blockages in wastewater networks. Previously, the total amount of melted snow together with sand, debris and chemicals was directed to the sewer network which resulted in supplementary networks cleaning. Snow-melting stations provide sedimentation of sand and debris in sedimentation tanks to be further disposed on landfills with no clogging of sewer network.

Back