Archiwum Realizacje - Ecol-Unicon

The project includes the comprehensive modernization of the water treatment station, which had not been fulfilling its function in recent years. The facility had remained out of operation for an extended period. Therefore, the scope of the investment focuses on restoring its full technical functionality and adapting it to current technological requirements. The implementation of the project will improve the quality of treated water, increase the reliability of the entire water supply system, and ensure stable water delivery to the municipality’s residents.

The project scope involves the implementation of modern technological solutions and the expansion of the facility’s technical infrastructure, enabling the water treatment station to meet current operational needs and support the further development of the water supply system.

It is also worth noting that the investment value amounts to PLN 4.8 million, with 85% of eligible costs covered by EU funding obtained by the Chęciny Municipality.

Scope of work

reconstruction of the water intake
modernization of the booster pumping station
construction of two treated water storage tanks with a capacity of 250 m³ each
integration of new technological installations with the existing infrastructure of the water treatment station

Zastosowane rozwiązania

A key element of the modernization is the implementation of technology enabling the effective removal of undesirable mineral compounds and other contaminants affecting the physicochemical parameters of water. This solution ensures stable water quality and allows the treatment process to meet current technological and sanitary requirements.

As part of the project, two treated water storage tanks with a capacity of 250 m³ each will be constructed, increasing the safety and operational stability of the water supply system. These tanks will enable efficient water storage management and help maintain continuity of supply during periods of increased demand or short-term technological interruptions.

Following the completion of the reconstruction works, the water treatment station will achieve a capacity of 97 m³/h, contributing to more stable operation of the water supply system and preparing the municipality’s infrastructure for future demand and further network development.

The modernization includes the reconstruction of the water treatment station building and the complete replacement of the technological installation. The existing treatment system will be dismantled and replaced with a modern technological system designed to ensure drinking water that meets the required quality parameters.

The project is part of a larger undertaking implemented within the municipality entitled “Expansion and modernization of the water supply system in the Municipality of Myślenice.” Funding for this initiative was obtained through the European Funds for Infrastructure, Climate, Environment program (FEniKS). The objective of the project is to improve the condition of the natural environment, ensure an adequate quantity and quality of water for residents, reduce the number of failures, and minimize water losses in the water supply network.

Scope of work

reconstruction of the water treatment station building
construction of an above-ground reinforced concrete raw water tank with a capacity of 50 m³
installation of a new water treatment system including aeration, filtration and disinfection processes

installation of a two-stage pressure filtration system
installation of a water disinfection system using a UV lamp and sodium hypochlorite
modernization of the treated water storage and distribution system
implementation of a control, monitoring and remote supervision system for station operation
adaptation of the facility’s power supply infrastructure

Zastosowane rozwiązania

The operation of the modernized water treatment station will be based on natural groundwater treatment processes such as aeration and filtration. Water from deep wells will be directed to a raw water tank where, thanks to the use of an aeration jet system, it will be oxygenated and iron compounds will be partially precipitated.

The next stage of the process will be two-stage pressure filtration carried out in filtration modules filled with anthracite, quartz sand and catalytic media. The technological system will be complemented by water disinfection, including the use of a UV lamp, ensuring sanitary safety and stable water quality parameters for the water supplied to the distribution network.

After the modernization is completed, the water treatment station will operate with a capacity of 16 m³/h (with the possibility of maximum operation up to 20 m³/h), ensuring stable and safe water supply for residents and increasing the reliability of the local water supply system.

A significant implementation challenge is that the modernization is being carried out at an operational water treatment station, which must continuously maintain water supply to residents. This requires proper phasing of the works, precise coordination of technological and construction activities, and maintaining high operational safety standards throughout the project.

The objective of the investment was not only to modernize worn infrastructure, but above all to prepare the treatment plant for the further development of the sewerage system. Key goals included increasing reliability, automating technological processes, and achieving an average treatment capacity of 750 m³/day. The modernization was also intended to ensure proper and stable wastewater treatment prior to discharge into the receiving water body—regardless of seasonal variations in raw wastewater composition—in compliance with applicable national regulations and European Union standards.

As the General Contractor, we delivered the investment under a “design and build” formula, taking responsibility for the entire scope of works—from design, through construction and technological works, to commissioning of the treatment plant.

Scope of work

preparation of full design documentation
reconstruction of the first-stage treatment system for delivered (trucked-in) wastewater
construction of a mechanical wastewater treatment node with a screen–grit separator
construction of a retention and equalization tank with an active capacity of approx. 100 m³

modernization of the bioreactor, including reconstruction of the aeration system and replacement of the complete set of technological equipment
construction of a new blower station
execution of a new, complete control and power supply system for the treatment plant
construction of inter-facility networks and reconstruction of technological systems
technological start-up and commissioning of the facilities for continuous operation
construction of internal roads and technological access routes

Implemented solutions

The treatment plant was reconstructed as a mechanical-biological installation based on low-load activated sludge technology, equipped with automatic control systems and modern process equipment. The modernization included comprehensive measures aimed at improving technological efficiency and ensuring stable operating conditions for the entire system.

The existing infrastructure was rebuilt and supplemented with new technological facilities, including a mechanical treatment node with a screen–grit separator and a retention–equalization tank.

The investment also included expansion of inter-facility networks, comprehensive technological start-up, and implementation of a new control and automation system. The applied solutions enable ongoing monitoring of operating parameters and adjustment of the plant’s performance to changing wastewater inflow conditions.

How was the project in Borysławice implemented?

In this project, the key objective was not only to increase the treatment plant’s capacity, but above all to improve its efficiency and reliability in the long term. Our goal was to ensure that the designed technological solutions not only meet current requirements, but are also resilient to variability in wastewater inflow and future expansion of the sewerage network. Particular emphasis was placed on optimizing the treatment of delivered wastewater and on process automation, which will significantly facilitate operation of the facility.

Wojciech Tomaszewski, Project Manager

The objective of the investment was to modernize key technological systems, increase the plant’s treatment capacity, and improve the safety and reliability of its operation. The project included the expansion of the existing technological infrastructure and the modernization of key treatment systems.

As Ecol-Unicon, we carried out a comprehensive scope of modernization and expansion works at the treatment plant, taking responsibility for coordinating technological and construction activities. The result of these efforts is an almost twofold increase in the facility’s capacity – to approximately 700 m³ of wastewater per day – and preparation of the plant for safe and stable long-term operation.

Watch the project video

Scope of work

construction of a mechanical treatment system, including a hook-and-panel screen chamber, a screenings washer-press, and a technological canopy
construction of a sanitary wastewater pumping station with full equipment
modernization of excess wastewater storage tanks with associated equipment
construction of a mechanical treatment building with a dedicated room for waste containers
modernization of the existing biological reactor, including replacement of the aeration system
expansion of the biological treatment section through the construction of an additional reactor with a secondary clarifier, using an existing reinforced concrete tank
construction of aerobic sludge stabilization tanks with a total capacity of approx. 120 m³, together with sludge thickening facilities
execution of a sewage sludge hygienization system using a lime dosing unit
construction of a biofilter for process air treatment
execution of technological, leachate, power supply, and control networks, as well as an alternative power supply in the form of a generator set
performance of technological start-up, testing, and handover of the facility for operation
comprehensive site development works

Implemented solutions

The technological solutions applied at the wastewater treatment plant in Włosań were selected to ensure more effective wastewater treatment and to reduce the facility’s impact on the surrounding environment. The expansion and modernization of mechanical and biological systems, combined with new sludge management installations, enable stable and efficient operation of the plant at nearly double its previous capacity.

The implemented technologies directly improve the quality of treated wastewater discharged into the environment and reduce emissions of nuisance odors, which is of significant importance both for the condition of water resources and for residents’ quality of life.

The modernized facility is characterized by higher standards of safety and reliability, as well as environmentally friendly solutions that minimize the plant’s impact on its immediate surroundings.

As Ecol-Unicon, we delivered the investment as the general contractor, taking responsibility for the comprehensive modernization and expansion of the facility. The completed works resulted in stable and efficient operation of the treatment system, lower operating costs, and infrastructure readiness for further development and the growing needs of the municipality. The investment represents a tangible contribution to the protection of local water resources and an example of responsible management of municipal infrastructure that will serve residents for many years to come.

The objective of the investment titled “Construction of a booster pumping station in the village of Goleńsko” was to build a modern water treatment plant enabling effective treatment of groundwater by removing undesirable elements and contaminants, as well as ensuring appropriate physicochemical and bacteriological parameters. As a result of the project, the facility’s capacity was almost doubled, which allowed for increased water availability and improved safety and continuity of supply.

The investment was carried out by Ecol-Unicon under a “design and build” formula and constitutes an important element of the long-term activities of the Chąśno Municipality aimed at improving residents’ quality of life, environmental protection, and sustainable water resource management.

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Scope of work

development of a concept for the expansion of the Water Treatment Plant in Goleńsko and preparation of complete design documentation
decommissioning of the existing water treatment technology
construction of a new container-type Water Treatment Plant building
delivery and installation of fittings, installations, and technological equipment in the new facility
construction of a treated water retention tank with a capacity of 148 m³
construction of a backwash water settling tank together with a pumping station and a measurement-and-valve chamber
performance of technological start-up, staff training, and preparation of the facility for operation

Implemented solutions

The new water treatment plant in Goleńsko was designed and constructed based on modern groundwater treatment technologies, enabling effective removal of undesirable contaminants and improvement of drinking water quality parameters. The applied technological solutions ensure stable and safe operation of the facility as well as high quality of supplied water.

The implementation of the project increased water availability to 73,945.00 m³ per year, representing an increase of approximately 32,335.00 m³ annually compared to the previous capacity of the facility.

This translated into improved living conditions for residents and the inclusion of additional consumers in the upgraded water supply system. The modern infrastructure also allows for reduced network failure rates, improved water pressure, and increased supply security.

As Ecol-Unicon, we delivered the investment under the “design and build” formula, acting as the general contractor and being responsible for the entire investment process – from preparation of documentation, through delivery and installation of technological equipment, to commissioning, operational optimization, and handover of the facility for use. The completed modernization represents an important step toward the sustainable development of the municipality and the long-term safety of its residents.

The project was made possible thanks to financial support from the Polish Government Fund “Polski Ład” and the Provincial Fund for Environmental Protection and Water Management in Łódź.

How was the project in Goleńsko implemented?

The project in Goleńsko was carried out by a team with many years of experience in the implementation of water supply infrastructure investments. This allowed for efficient execution of all project stages – from preparation of design solutions to commissioning of the installation – while maintaining the required quality and safety standards.

The result is improved drinking water quality, greater stability and security of supply, and increased comfort of everyday use, which has a direct impact on residents.

Wojciech Tomaszewski
Director of the Investment Execution Department, Ecol-Unicon

The goal of this investment was to strengthen the reliability of the local sewage system, improve wastewater treatment efficiency, and adapt the installation to the growing needs of residents and the planned development of the area. The modernization increased the plant’s capacity from approx. 125 m³ to an average of 600 m³ of wastewater per day, preparing it to serve new catchment areas.

An integral part of the task was the comprehensive renovation of the sewage pumping station – crucial both for residents’ comfort and for compliance with environmental requirements resulting from EU directives. The pumping station was adapted to handle larger volumes of wastewater, including those generated by newly built service infrastructure such as the amusement park constructed within the municipality of Brojce.

Scope of work

Modernization of the wastewater treatment plant in Brojce included, among others:

modernization of the Bioblock WS-400, including cleaning, sandblasting and anti-corrosion protection of steel structures, and replacement of technological equipment (2 technological lines)
installation of a new aeration system in the nitrification chambers
equipping the facility with a blower station
supply and installation of a new discharge station for hauled wastewater
implementation of a new automation system and full integration of plant operation

The renovation of the sewage pumping station included:

reconstruction of pumping chambers with a dedicated retention section
cleaning and anti-corrosion protection of the walls of both chambers
installation of a new basket screen
installation of a submersible mixer and pump in the retention chamber
installation of two submersible pumps with new piping in the wet chamber
supply and installation of a new DN2000 shut-off valve chamber equipped with shut-off fittings
execution of new electrical installations and measurement systems for both pumping chambers

Implemented solutions

The modernization of the municipal wastewater treatment plant in Brojce increased its throughput and improved the reliability of crucial technological systems. As a result of the works, the preliminary treatment process along with the raw wastewater retention system was relocated outside the treatment plant area – to the pumping station, which was also renovated. This arrangement streamlined the flow and optimized the operation of the entire facility.

The modern discharge station and the new automation system improved daily operation as well as monitoring of the treatment plant. Meanwhile, the renovation of the sewage pumping station enhanced transmission parameters and the technical condition of the installation, preparing it to serve new users, including upcoming commercial developments within the municipality.

As the General Contractor, we delivered this project in a “design and build” formula, taking responsibility for the complete scope – from documentation development, through construction works, to commissioning and technological testing of all mechanical, electrical and automation systems (AKPiA).

This was the second project carried out by Ecol-Unicon at this facility. During the construction of the PM-1 pumping station (commissioned in 2016), the company performed all technological works, including the installation of pumps and screens. This time, as the General Contractor, Ecol-Unicon was responsible for the comprehensive replacement of four pumps, along with adapting the necessary elements of the facility to the new equipment (including modification of pressure pipelines and installation of guide rails), and installation of flow meters.

The works carried out increased the efficiency of the pumping station, its safety, and the reliability of the wastewater transport system. Thanks to the modernization, the facility is now better prepared for increasing hydraulic loads and ensures stable long-term operation.

Scope of work

dismantling of four existing pumps along with their elbows
replacement of guide rails and coupling elbows
delivery, installation, and commissioning of four new submersible pumps for raw sewage
installation of new flow meters
modernization of the power supply and control system for the pumps
implementation of changes in the PLC controller and integration with the existing automation system
execution of mechanical (technical), hydraulic, and technological start-ups
preparation of complete design and as-built documentation

Implemented solutions

The project was carried out under a “design and build” formula, which allowed for a comprehensive approach to modernization—from design preparation, through supply and installation, to commissioning of the new equipment. The modernization aimed to increase the reliability of the pumping station and adapt it to future operational needs.

Although the structure of the pumping station tank remained unchanged, key technological components were replaced. The new pumps feature high energy efficiency and resistance to clogging by suspended solids and debris, which is particularly important when handling untreated raw sewage.

How did pumps replacement proceed in practice?

This investment was demanding due to the scale of the facility and its key importance for the operation of Gdańsk’s entire sewage network. The works were carried out on an active facility, which required not only precise execution but also close coordination with the infrastructure owner – Gdańsk Water and Sewage Infrastructure – and the operator, Gdańsk Water and Sewage Operator.

Ensuring the continuous operation of the pumping station throughout the project was crucial. The pumps were replaced one by one—after each installation, the necessary start-up was carried out. Only after a successful start-up was completed did work begin on dismantling and replacing the next pump. This approach allowed three pumps to remain operational at all times, ensuring full functionality of the facility, safety, and uninterrupted operation of the entire system.

Rafał Biesik, Project Manager

Scope of work

Within the scope of this investment task:

the bodies and equipment for two pumping stations (PS and PD) were delivered,
pumping station equipment was installed and hydromechanical commissioning performed,
two DN 6000 tanks were delivered and installed: a firewater tank and a retention tank,
a BIOFIT 450 treatment unit body and equipment were delivered,
treatment plant equipment was installed,
hydromechanical and technological commissioning were carried out,
a high-efficiency coalescence separator with sedimentation (ESK‑H 30/3000 SEP K), two fat separators with sedimentation (EST‑H 4/800, designated SEP and SEP4),
a high-efficiency two-chamber vortex sedimentation tank with lamella inserts (EOW‑2L 40/400) was delivered,
two overflow and fat‑level alarms (EU‑AL PT), an oil‑level alarm (EU‑AL R), and an alarm for overflow, oil level, and sediment (EU‑AL PRO) were delivered,
a watertight wall-mounted enclosure (OH‑4B.3) with PG‑7 cable glands was delivered,
a DN 3000 well (ZB1) and a DN 2000 well (ZB2) were installed.

Applied solutions

The project utilised well-established and reliable technologies and products, including:

BIOFIT 450 treatment plant – a compact, modular solution ready for integration into wastewater treatment systems, offering future expandability.
Ecol‑Unicon separators and settlers – provide effective retention of pollutants, including petroleum derivatives and fats. Key technologies include ESK (coalescence separator), EST (fat separator), and EOW (lamella settler).
EU‑AL PRO alarm system – monitors sediment, fat, and overflow levels, minimising the risk of failure and streamlining operation and maintenance.
OH‑4B.3 sealed enclosure – ensures full tightness and protects the installation from external environmental factors.
Retention manholes (DN 3000, DN 2000) – durable infrastructure components with high storage capacity, supporting effective stormwater management.

Scope of work

Ecol‑Unicon carried out the following construction works:

delivery and installation of the pumping station body (DN 6000);
delivery and installation of the pumping station equipment and hydromechanical commissioning;
supply of a DN 2000 sedimentation tank with a volume of 3.0 m³;
high-performance ESK‑B II 20/200/315 coalescence separator with bypass.

Applied solutions

Prefabricated DZB tank – a modular, reinforced-concrete tank offering high tightness and structural strength, easy to assemble and configurable according to local conditions (including driveable surfaces);
The pumping station body of diameter DN 6000 enables handling of high flows;
The sedimentation tank with parameters DN 2000, V = 3.0 m³ is a typical solution used in stormwater or industrial sewer systems for preliminary solids separation;
The ESK‑B II 20/200/315 coalescence separator is a high-efficiency Class I device, equipped with a sedimentation chamber, coalescence filter, and bypass, designed to treat stormwater containing hydrocarbons and suspended solids at a nominal flow of 20 dm³/s. Thanks to its compact concrete body and large oil retention capacity, the separator complies with PN‑EN 858 and provides effective environmental protection.

Scope of work

The investment involved the comprehensive construction of a sanitary and stormwater drainage system, including a local modular wastewater treatment plant.

As part of the project, Ecol‑Unicon delivered an ENA‑200 active odour neutraliser with a carbon filter cartridge and carried out its commissioning. The neutraliser was installed to reduce nuisance odours in the area surrounding the treatment facility. This solution significantly contributes to environmental protection and improves the quality of life for the residents of Jamielnik.

Applied solutions

The installed neutraliser is a modern device that uses an impregnated activated carbon cartridge to reduce odours and volatile toxic substances, including hydrogen sulphide (H₂S). The system is capable of removing up to 95% of odorous compounds.

This solution stands out for its compact design, which enables quick installation and easy operation, as well as the possibility of expanding the odour control system if the treatment plant’s capacity increases in the future.

The ENA unit is suitable for use in pumping stations, lift stations, and wastewater treatment plants – wherever effective odour elimination is required with minimal operating costs.