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In 2018, the largest water management company in the country, Vilniaus Vandenys, invested 149 thousand. to mobile TV diagnostic equipment used for pipeline monitoring. About 60,000 meters of sewage pipes were filmed with the help of a robot. They contain impressive finds: from large appliances, tires, bicycles to small items: collectible coins, antique watches, etc.
The TV diagnostic equipment can be used to quickly identify and repair pipeline cracks, as well as view trouble spots or pipeline jams, reducing the likelihood of accidents and service interruptions in the city.
“The biggest advantage of the equipment is that with its help it is possible to inspect pipes without excavation work even at a distance of 340 meters. This saves time and money, eliminates and prevents accidents more quickly. With the help of this team, we can also educate the public, show the Vilnius underground and tell us about the city’s sewage network, which has been running for centuries, ”says Tadas Kazlauskas, Production Manager at Vilniaus Vandenai. According to him, the public also lacks basic knowledge of what can be poured into the sewer, and what is strictly forbidden to dump there, so seeing the image from a “close-up” is also an educational preventive measure.
In the sewer networks, those who care for them find almost all the waste that people should put in garbage containers. They are household appliances, bicycles, children’s toys, or bags of collected fall foliage that someone just disposed of by filling in a sewer pit.
The construction of the old Vilnius sewer system, or more precisely the sewer sections, began in Vilnius relatively late, in the 17th century, about a couple of hundred years later than in other major cities in Western Europe. The sewage system of the time was different from today: the old canals were open, dirty and polluted, the smell and the spread of diseases worsened the image of the city. As the city expanded and prospered, such conditions no longer satisfied the population, so everything had to be fundamentally changed. Still in use, the oldest brick collector on Sierakauskas Street, maintained by the company, dates from 1905.
Today, the sewer pipe covers the entire subsoil of the city and the suburbs of Vilnius. The entire network is operated and maintained by specialists from the Vilniaus Vandenys Wastewater Networks Division. The total length of the underground network is about 1,400 km. For comparison, that distance connects Vilnius and Amsterdam.
Currently, the Vilniaus Vandenys company supervises around 35 thousand. sewer wells. On average, around 100,000 m3 of wastewater flows through the pipes per day. The journey of the wastewater from the user to the treatment plant takes approximately five hours, and the wastewater entering the wastewater treatment plant is mechanically and biologically treated.
