Water for a big city
SUE “Vodokanal of St. Petersburg” provides drinking water to 5 million citizens and tens of thousands of companies and enterprises. One more task of Vodokanal is to collect and treat wastewater.
Since 2013, endangered pinnipeds - grey seals and (Baltic and Ladoga) ringed seals- have been rehabilitated at the premises of Repino wastewater treatment plant in the Kurortny District of St. Petersburg.
10 October 2013, the biggest environmental project – the Northern Tunnel Collector construction – was completed
Since June 28, 2011 Saint-Petersburg has been fully implementing the Helsinki Commission's recommendations for preservation of the Baltic Sea
SUE “Vodokanal of St. Petersburg” organizes visits to the company production sites – against advance applications and for groups.
You will see how the city water and wastewater treatment plants work; how water from the Neva River turns to drinking one and how wastewater becomes clean.
You will find out why drinking water is disinfected not only with sodium hypochlorite but also with ultraviolet; you will see the difference between the incoming wastewater (influent) and outcoming wastewater (effluent).
Visits are organized on weekdays from 11.00 to 14.00.
Duration: 2 academic hours.
The cost for a group up to 20 people:
6,000 (9,000 roubles with the provision of transport).
Main Water Treatment Plant
Northern Water Treatment Plant
Southern Water Treatment Plant
Central Wastewater Treatment Plant
South-West Wastewater Treatment Plant
Northern Wastewater Treatment Plant
Permanent snow-melting station
NORTHERN WATER TREAMENT PLANT (NWTP) – one of the largest water treatment plants in St. Petersburg. It serves northern and north-eastern districts of the city. In April 2010, the plant celebrated its 40th anniversary. In summer 2009, the official ceremony of discarding the last chlorine container was held over there, in which Chairman of the State Duma B.V. Gryzlov, Deputy Chairman of the Federation Council S.Y. Orlova, Governor of Saint-Petersburg V.I. Matveenko took part. Today, the non-hazardous chemical – sodium hypochlorite – is used instead of chlorine for disinfection at all the city waterworks.
NWTP is located at the address: Zanevka village, Vsevolozhsky district, (7.2 km by road from Ladozhskaya metro station).
SOUTHERN WATER TREATMENT PLANT (SWTP) – the largest water treatment plant in the city. The first SWTP facilities were put into operation in 1933-34. During the siege, SWTP was significantly ruined mainly from artillery attacks; there is a memorial in commemoration of those days at the plant.
Water from SWTP is supplied to consumers in Nevsky, Moscovsky, Frunzensky, Kirovsky and Krasnoselsky districts. The volume of the water supplied is about 700,000 m3 per day.
In 2010, the new K-6 water treatment block was pre-commissioned in St. Petersburg. The new block capacity is 350,000 m³/day. It is one of the most up-to-date treatment blocks in Russia. In early 2011, the provision of drinking water from the new block to consumers began.
Technological solutions used at the stages of design and construction of the block enable us to handle any changes of the Neva water quality.
The whole process of turning water from the Neva River to drinking one lasts about two and a half hours. At first, ozone is added to the incoming water. It allows to improve the further treatment process. Ozone is made from ordinary air in a special ozonation room located at the premises of the plant.
Then coagulant is added to water. In the mixing chamber a high-speed mixer accelerates the process of sticking various impurities contained in water. Then water is transported to flocculation chambers; the next stage - lamellas. The next treatment step – filtration. After it water is disinfected and on its way to consumers is UV-treated. The result is clean, safe and harmless drinking water. One more peculiarity of the new block – its environmental friendliness. The closed cycle of so called flushing water (water to wash filters) is used here. That allowed to significantly reduce the adverse impact on the environment. Processing of the sludge generated after water treatment is provided.
SWTP (К-6) is located at the address: 10 Progonnaya str. (Proletarskaya metro station).
CENTRAL WASTEWATER TREATMENT PLANT (CWWTP) – the largest complex of wastewater treatment plants in St. Petersburg. In the course of construction an artificial island was made with an area of 57.3 ha – the Bely Island. In 1997, the first in Russia wastewater sludge incineration plant was put into operation at CWWTP. In 2005-2007, during the implementation of the Clean Baltic Sea joint Russian and Finnish environmental project the plant was reconstructed and the technology of enhanced nutrients (nitrogen and phosphorus) removal was introduced. The Baltic Marine Environment Protection Commission (HELCOM) pays special attention to the content of nitrogen and phosphorus in wastewater, as nutrients favor an active growth of blue and green algae (it is one of the main threats to the Baltic Sea). It was at CWWTP where the first in Russia and CIS wastewater sludge incineration plant was constructed in 1997.
CWWTP is located at the address: 1 Bely Island, (5.5 km from Baltyiskaya metro station, bus No. 67).
SOUTH-WEST WASTEWATER TREATMENT PLANT (SWWTP) – one of the most important facilities of the wastewater system in the Baltic Sea region, the most advanced wastewater treatment process. The SWWTP construction became an example of the international environmental and financial cooperation. Dozens of companies were involved into this project. It was here that the public private partnership scheme was applied for the first time in Russia. The project was supported at the level of the Nordic governments, international financial organizations and donor organizations. South-West WWTP was inaugurated on 22 September 2005 in the presence of the President of the Russian Federation V.V. Putin, the President of Finland Tarja Halonen and the Swedish Prime-Minister Göran Persson. The SWWTP capacity – 330,000 m3 per day. A lot of SWWTP’s visitors pay attention to the small exposition “Our captures” (organized by its employees), where things fallen into the sewerage system are exhibited. In 2007, a wastewater sludge incineration plant was commissioned. In addition to solving the core task - wastewater sludge disposal – it also produces heat and power that enables Vodokanal to reduce the need in purchased energy. Since 2011, the unique flue gas biomonitoring system has been working with the support of snails.
SWWTP is located at the address: 123 Volchonskoye shosse, (21 km by road from Kirovsky Zavod metro station).
NORTHERN WASTEWATER TREATMENT PLANT (NWWTP) – one of the tree largest wastewater treatment plants in the city. It is located west of the Town of Olgino and occupies an area of 65 ha. The first NWWTP line was commissioned in 1986; the plant reached its full capacity in 1995. Wastewater from the Northern Tunnel Collector (its construction was completed on 10 October, 2013) comes over here. Since 2007, a sludge incineration plant has been operating at Northern Wastewater Treatment Plant.
Since 28 June, 2011, St. Petersburg has been fully complying with the Helsinki Commission’s recommendations for phosphorus in the discharged effluent – not more than 0.5 mg/l.
NWWTP is located at the address: The town of Olgino (13 km by road from Chernaya Rechka metro station).
PERMANENT SNOW-MELTING STATIONS (PSMS). Ten permanent snow-melting stations work in different districts of St. Petersburg in winter. Their total capacity – 59,000 m3 of snow per day.
The principle of PSMS operation is based on the fact that wastewater heat makes it possible to melt the snow falling into snow-melting chambers.
The middle temperature of wastewater is 160C even in winter. Produced melt-water is transported through the collectors to wastewater treatment plants to be fully treated. Thus, snow disposal at permanent snow-melting stations allows to significantly reduce the adverse impact on the environment.
To melt 1 cubic meter of snow 5 cubic meters of wastewater is needed.
No additional energy is required, electric energy is needed only to provide the macerator and pump station operation.
A snow-melting station operates as follows. A dump truck arrives at the PMS site, unloads snow on special macerators to crush it. Macerators also remove coarse litter . Then snow is transported to the snow-melting chamber where it melts by wastewater heat. Produced melt-water goes through grit removals - where grit is settled to the bottom by gravity. Due to it no silting occurs in sewage collectors, where wastewater arrives from snow-melting chambers. Floating waste is collected and then disposed. Produced melt-water is transported through collectors to wastewater treatment plants to be fully treated.
PETRODVORETS WASTEWATER TREATMENT PLANT (WWTP) was commissioned in 1976, reconstructed in 2011. This plant has become the first one where three steps of wastewater treatment are used – mechanical, biological treatment with enhanced phosphorus removal and tertiary treatment at lamellas. Treated effluent is also disinfected before discharging to the Gulf of Finland. The capacity of this plant – 65,000 m³ per day, wastewater from Petrodvorets and Lomonosov comes over here.
The construction of Petrodvorets Wastewater Treatment Plant began in 1969 on the shores of the Gulf of Finland in the area of Oranienbaumsky spusk (slope). This plant was a test site for selecting a treatment technology to be used at Central Wastewater Treatment Plant. One can say that it was Petrodvorets WWTP where the development of the wastewater treatment system in Leningrad began: it was constructed in 1976, but the first CWWTP line on the Bely Island started its operation two years later.
SESTRORETSK WASTEWATER TREATMENT PLANT was commissioned in 1976, reconstructed in 2005. The capacity – 17,000 m³ per day. After the reconstruction this plant became the first WWTP in Russia, where HELCOM recommendations were fully met – during the wastewater treatment process nitrogen and phosphorus are removed. One more innovation applied at Sestroretsk WWTP – disinfection of effluent before its discharging to a water body. This method is widely used in the world, but it was Sestroretsk WWTP where it was applied for the first time in St. Petersburg. During the plant reconstruction all the main equipment was replaced, wastewater mechanical treatment building and sludge dewatering building were constructed, clarification tanks and aeration tanks were overhauled, new compressor units were assembled, sludge thickeners were constructed. Treated and disinfected effluent is discharged through water pipes to the Gulf of Finland.
PUSHKIN WASTEWAER TREATMETN PLANT was commissioned in 1975, reconstructed in 2006. The plant receives and treats domestic wastewater from customers in Pushkin administrative district. The designed capacity of the plant - 62,000 m³ per day. Treated effluent is discharged to the Slavyanka River.
At the current Pushkin WWTP, the technology of enhanced biological removal of nitrogen and phosphorus is implemented in compliance with the HELCOM requirements. As part of the international contract for suburb wastewater treatment plants modernization, the equipment at Pushkin WWTP was replaced.
Tsarskoye Selo WWTP built by order of the Emperor Nikolas II and commissioned at the very beginning of the 20th century, became the first wastewater treatment plant in Russia. In our country, the biological wastewater treatment was applied for the first time at Tsarskoe Selo.
MOSCOVSKAYA PUMPING STATION. The first line of Moskovskaya pumping station (MPS) was commissioned in 1952.
Moscovskaya pumping station supplies water to Moscovsky, Kirovsky and Krasnoselsky districts (total population – about 1.2 mio people) and partly – to the towns of Pushkin, Pavlovsk and Petrodvorets. The daily water supply is up to 600,000 m3/day, the MPS water supply zone includes over 6,000 facilities.
To provide water supply services in its zone Moscovskaya pumping station receives water treated at Southern Water Treatment Plant through seven water pipes with a diameter from 900 mm to 1,200 mm. Facilities of Moskovskaya station include three pumping stations with 16 pumps installed, three UV disinfection stations, nine clean-water reservoirs with a design capacity of 145,000 m 3.
From 2005 to 2007, Moskovskaya pumping station was reconstructed. That made it possible to optimize operating modes of MPS and Southern Water Treatment Plant, reduce energy consumption for supplying water to the city pipe network, etc.
Currently, two pump departments are under reconstruction. The reconstruction includes replacement of pumps, valves, installation of a unit that prevents water hummers. Recently, six reserve water supply wells have been commissioned.
Moscow pumping station is located at the address: 46 Ordzhonikidze str.