Case

Improving wastewater efficiency for ecological health

A remodelling of the Czajka Wastewater Treatment Plant has greatly improved efficiency of the plant, working hand in hand to improve the quality of water in Warsaw in which AVK is proud to have delivered 1,200 valves.

Up until 2013, Warsaw was unable to adequately process wastewater as the Czajka Wastewater Plant only processed waste water from half of Warsaw and parts of Legionowo. As a result the remaining untreated water flowed directly into the Vistula river where it caused havoc on the ecosystem. Increasing demands from the population of the European Union and Poland in particular strained the treatment plant and thus plans for upscaling commenced. 

In partnership with Veolia Water and Krüger, AVK won the tender to supply the valves for the project. The enormous project blends ingenuity with innovation allowing the revised plant to process from both cities as well as excess capacity for future growth. The upgraded plant now features a centralised intelligent control system which ensures efficiency. 

Improved handling of sludge

AVK Armadan’s Industry Department Manager, Miroslaw Kopyta attended the project site and oversaw installation first-hand to ensure all AVK products reached the site on schedule. Miroslaw also operated as the consultant for technical solutions and equipment from AVK. 

– After the refurbishment of the plant, particularly the handling of sludge has been improved. Previously, Czajka Wastewater Treatment Plant led the contaminated and untreated sludge out into fields, but heat treatment now ensures that organic materials are broken down and cleaned so that both odours and volumes are significantly reduced, explains Miroslaw Kopyta.

Can handle 435,000 m3 wastewater a day

For many years, Warsaw’s population has put pressure on the Vistula river running directly through the metropolis generating in excess of 200,000 cubic metres of waste per day. The improved water plant has been engineered to handle more than twice the current load for future growth, all made possible by AVK valves. 

Intelligent control system

The new project has also utilised an advanced control system which employs 140 staff in a high-tech environment to efficiently operate the plant. 

– We are now able to monitor all systems from the control room, and it is easy for us to locate any defects, explains Osinski Marcin from Czajka Wastewater Treatment Plant.

1,200 AVK valves

AVK proudly stands strong after competing fiercely against some of the world’s top manufacturers winning the bid and supplying more than 1,200 valves to the complex project. Butterfly valves were utilised for aeration, ball check valves and swing check valves were applied in the pumping stations, gate valves for clean water while the treatment of sludge was handled by automatic and manual gate valves.

After 5 years in development the plant was fully operational in early 2013, bringing health back to the waters of Warsaw.

Facts about the Czajka Wastewater Treatment Plant

  • Czajka Wastewater Treatment Plant has been designed to treat 435,000 m3 of wastewater a day – during peak periods as much as 515,000 m3.
  • The plant covers an area of 53 hectares.
  • 1,500 men and 21 cranes worked on the construction.
  • During construction, 24,000 tons of steel were used – three times more than the amount used for the Eiffel Tower – and 155,000 m3 of cement.
  • On average, 24 tons of sludge are produced an hour. This is equivalent to approximately 22 fully loaded trucks every day.
  • The area has 60 kilometres of pipeline and seven kilometres of road.

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