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MVM Paks Nuclear Power Plant Ltd.

MVM Paks Nuclear Power Plant Ltd. planned the reconstruction of the control cabinets for the main feed pumps. The goal of the investment is to increase operational safety and ensure compliance with lifetime extension requirements.

During the modification, outdated relay logic was replaced with modern automation systems, and contact pressure gauges and temperature measurements for the auxiliary pressure systems were replaced with analog transmitters.

The modification affects the main feed pumps of all four reactor units, the oil pumps serving the main feed pump oil systems, the associated auto-transfer systems, as well as the pressure, temperature, flow, and level switches serving the control systems, based on the following tasks:
 
 
  • Replacing existing relay automation in control cabinets with modern PLC control (Schneider M580)
  • Porting the logic to the PLC while maintaining existing functions of the oil pump auto-transfer automation
  • Replacing contact pressure gauges for pressure and flow measurements (differential pressure measurement) with analog pressure transmitters, and replacing/standardizing existing analog pressure transmitters
  • Replacing pressure gauges with new, modern types
  • Replacing outdated, multi-module temperature measurement circuits with modern analog temperature transmitters
  • Ensuring configurability of new transmitters via HART protocol and making HART communication available for remote monitoring
  • Displaying individual error signals from measurements and auto-transfer automation on the Unit Computer (BSZG), building upon the I&C foundation laid during the FKSZ (main feed pump) oil system reconstruction
  • Recording auto-transfer automation events and maintaining an event log
  • Connecting PLCs to the Unit Computer via the network cabinet installed during the FKSZ oil system reconstruction and the existing Process I&C Network
  • Enabling simple and fast testing and simulation
 
The secondary circuit encompasses the feed-side of the steam generators, the main steam system, the high- and low-pressure turbine stages, the condenser, and the feedwater system. Its primary task is to convert the energy of flowing steam into rotational motion, driving the turbines and the generator. Each reactor is equipped with 5 main feed pumps. The critical nature of this task is underscored by the fact that 4 out of the 5 pumps must remain operational for the reactor to run at full power.
 
 
 
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Budapest Airport

Replacement of the Lighting Control System for the Runways and Taxiways at Budapest Liszt Ferenc International Airport

In the control tower, air traffic controllers select the appropriate taxi routing program on their computer, which directs the aircraft's movement during takeoff and landing. This includes, for example: landing direction approach lights, Precision Approach Path Indicator (PAPI) lights assisting the glideslope, touchdown zone lighting, taxiway lighting to the aircraft stand, and stop bars regulating movement across individual sections.
 
This command is transmitted via the SCADA servers to the redundant PLCs located in the lighting transformer substations.
These PLCs switch the regulators corresponding to the required lamp groups via Remote I/O (RIO) units and adjust the brightness according to weather and daylight conditions.
 
Along the exact same path, the air traffic controller receives real-time feedback on the display if any regulator signals an operational fault (e.g., lamp failure, ground fault, regulator malfunction).
 
In addition to executing commands, the PLCs gather operating parameters from each regulator, which can be read on local human-machine interfaces (HMIs) and forwarded to the operator's supervisory management system.

Our key responsibilities within the project included:
  • Manufacturing redundant PLC control cabinets
  • Programming PLCs to process SCADA commands and serve the supervisory management system
  • On-site cabling to the regulators during active operations
  • Running the old and new control systems in parallel at the regulators under continuous lighting operations, ensuring full system functionality (this enabled rapid switchover of all 300 regulators between the two systems during the final cutover)

 
 
 
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National hail damage repelling system

In 2018, a hail damage repelling system was deployed in Hungary, covering the entire territory of the country. In a 10x10 km grid-network, 986 ground generators were installed out of which 222 pcs are automated, whereas the remaining units are controlled manually.
 
The operation of the system is based on the forecasts of the Hungarian Meteorological Service (OMSZ). The central software receives three messages per day about the expected hail storms. Three hours before the actual alarm, the software sends a command to the automated units via GPRS connection and to the operators of the manual equipment via an Android mobile application to start-up the units.
 
Within the framework of this project, we carried out the following tasks:
 
  • Manufacturing and installation of the automated equipment.
  • Development of a central webSCADA supervision software for the operation and tracking and of the automatic ground generators and for information display.
  • Informing the operators of the manual equipment about the expected events.
  • Alarming the operators of the manual equipment about the necessary interventions.
  • Development of an Android based mobile application for communication with the operators of the manual equipment. 
  • Development of an Android application for sending information about the hailstorm to the dispatch centre.
 
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Budapest Airport

Establishment of a harmonized alarm system at the three stations of the Liszt Ferenc Airport Rescue centre.

The system is responsible for the following tasks:
 
  • Control and supervision of the gates.
  • Attendance recording.
  • Feedback about the status of the rescue vehicles.
  • Control of the lamp and sliding pole shafts.
  • Supervision of the “starter” operation mode.
  • Alarm displaying.
  • Control of the alarm sound system.
 
The above-mentioned tasks have to carried out at three different stations under the supervision of one charge hand. In addition to this, the air traffic control team can also send alarm signals in the system in a direct way, based on some predefined protocol rules, using remote access.   
 
At the given stations and at the remote alarming points, 1-1 PLC is supervising the processes. The communication between the PLCs and the central display take place through a Modbusz TCP/IP protocol.  

Automated alarming process:
 
  • The gates of the selected garages open automatically and the drivers of the vehicles receive a green sign as soon as the gates reach the appropriate height.
  • The type of alarm and the name of the selected vehicles are written on LED displays that are installed at the different stations and rooms.
  • The automatic system sends through the loudspeakers the instructions that correspond to the protocol of the given alarm.
  • The system secures the doors of the fire pole shafts.
  • The lights are turned on at the station to secure safe movement and traffic.

Supervision:
 
 
  • The attendance list of the people that are present within the area of the station is displayed at the dispatcher desk.
  • The immediate environment of the gates can be inspected via CCTV cameras, when giving a closing command from distance.
  • At the different parking stations of the vehicles, an ‘’occupation” sensor is installed that helps to control and to display, whether the vehicle is at the station.
  • The high-capacity fire trucks always have to be kept at steady temperature in order to be able to set them in motion without any problems in case of an alarm. In order to fulfil these requirements, external power supplies are used. The presence of this is continuously controlled by the system.
     
 
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Schneider Electric CEE LOG conveyor system

We commissioned an automated conveyor system in one of Hungary's largest logistics centers. Our client, Schneider Electric's Central-European Logistics Center, serves Central and Eastern Europe, Turkey, and Russia with Schneider Electric's complete product portfolio from this facility.

The system is capable of preparing up to 300 boxes per hour across four different box sizes. Throughout the process, belt and roller conveyor systems work together, making directional changes both with and without position retention to transfer the boxes from input conveyors to target output conveyors, where operators pick them according to priority aided by ANDON displays.

Part of the conveyor system is a printing station where labels of various sizes and contents are automatically applied to the outside or dropped inside the boxes.

Before reaching the output conveyors, the boxes pass over a scale where their weight is measured and logged into a database, supporting weight-based content verification at the end of the entire packaging process.

System operation is driven by a webSCADA process control system paired with a Schneider PLC, which controls the entire process utilizing data from the local database and inputs from 40 optical sensors.
 
  
 
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Schneider Electric CEE LOG box erector machine

As an extension of the Schneider Electric CEE LOG conveyor project, our client wanted to automate the erection of cardboard boxes. To achieve this, we manufactured 4 standalone machines that supply ready-folded boxes from pre-loaded raw material to the 4 input buffer lanes. The machines process FEFCO 0321 type cardboard boxes ranging in size (Width x Length x Height [mm]) from 150 x 400 x 150 up to 400 x 600 x 300.
 
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Schneider Electric Prodax Clinching and Riveting Machine Retrofit

The task of the machine upgraded by our company is to secure the enclosure binding electrical conductors into busbar trunking systems using riveting. These products are used for high-power energy transmission and distribution ranging from 800 to 5,000 A.

Solutions:
  • Servo motor drive, position feedback, fine-tuned motion control.
  • Accurate feedback provided by position transducers on the supports.
  • Automatic rivet pitch adjustment allowing the manufacturing of multiple product types.
  • Intermediate clamping for product stability during riveting.
  • Expanded safety functions.
  • Fully automatic operation.
 

 
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Schneider Electric Prodax Mylar and Foil Forming Machine

Our machine manufactures insulation for electrical conductors, which are assembled into busbar trunking systems and used for high-power energy transmission and distribution ranging from 800 to 5,000 A.

The production line manufactures formed electrical insulation to adjustable length specifications in eight different widths from coiled foil raw material, fully enclosing conductors used for high-power energy transmission and distribution.

The line verifies the width of the threaded foil, preheats it, and folds both edges back by 180° with an appropriate radius to form the insulating channel. Cutting to length is monitored by an optical sensor driven by a precision servo motor. Tailored to the dimensions of the conductor body to be insulated, the equipment can manufacture and temporarily store products in eight different widths and adjustable lengths. Its advantages include a small footprint, quick changeovers, and controlled manufacturing.

The Foil Forming Process:
The flat foil continuously unreeled from the coil has its middle 1/3 as the bottom section, after which the right and left 1/3 sections are folded 180° over top with a 3 mm radius, maintaining an internal height of 6 mm for the conductor.

Solutions:
  • Coil width verification via optical sensors prevents manufacturing with incorrect raw material sizes.
  • Interchangeable parts are color-coded to assist operators.
  • Width adjustment between 70 and 400 mm in 8 steps is fully automated via stepper motor drive (1 machine = 8 different product types).
  • Stepless length production from 600 to 4,000 mm at speeds under 4 m/min, resulting in scrap, waste, and energy savings.
  • Thanks to the multi-stage output buffer, the machine can produce continuously during safe final product removal, optimizing production efficiency.
  • Network data collection integrated into the customer's process control system (Industry 4.0).
 
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Schneider Electric Sant Boi, Spain Box Erector Machine

We commissioned an automated box erector machine at the Schneider Electric Logistics Center located in Sant Boi de Llobregat, which serves Spain and Portugal, in addition to acting as a hub for other international flows.

Our machine, named Box-O-Matic, is capable of folding and delivering over 270 FEFCO 0321 type boxes per hour to a buffer conveyor system, which feeds them for further preparation according to the needs of the existing system.

Regarding its electronic components, the equipment is built exclusively with Schneider Electric parts.
 
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Integrated process control system for potable water and wastewater services at Transdanubian Regional Waterworks Plc. using webSCADA system

The Transdanubian Regional Waterwork Plc. (DRV) aimed to reconstruct its process supervisory systems and to develop a unified, integrated and complex process control system that covers the water production, water distribution and wastewater treatment activities in such a way that the particular sub-units are going to be closely integrated to each other.

The realization of the envisaged work doesn’t only consist of connecting the hardware and software systems but it rather foresees the implementation of a comprehensive system that aggregates the software, hardware, data bases and services.
 
Based on the consultations with the experts of the Transdanubian Regional Waterworks Plc., in order to achieve the modernization goals of the system, the following developments were carried out by us:
 
  • Establishment of a corporate level water and wastewater dispatch centre. The creation of an integrated system, instead of ‘’island” system.
 
  • Using the advantages of internet/intranet technologies that can have an effect on the duty system, maintenances and the creation of operation management schemes, since it assures that information is available everywhere at any time. This technology also makes the informatic operation of the system easier, since it allows a simple change of version and client-side installation is not necessary.
 
  • The establishment of such territorial/regional dispatch centres that can be moved freely within the network of the corporation, as a consequence of which the operational control system can follow the changing organizational structure in a flexible way, it can be modified quickly based on the changing needs.
 
  • It is necessary to deploy process control systems that are developed in an integrated way, including a uniformed user’s surface, management, functionality and control. In this way a solid system can be developed, in which the employees of the corporation can find their way easily and can access every information that is necessary during their work, shall they stand at whichever level of the organizational hierarchy.
 
  • Integration to the Technical Information System (TIS) in order to reduce duplicated working activities and errors. As a consequence of this, the huge amount of data that is generated in the process control systems and serves as a basis for the TIS is directly passed over to the latter in a controlled way.
 
  • Connecting data sheets to machines and objects
 
The project implementation lasted for 2 years, the extension of it is indicated by the figures below:
 
The integrated process control system for wastewater services at DRV Ltd.
 
  • 1.400 objects in total, connected into a unified integrated process control system out of which 800 are wastewater facilities.
  • Hungary’s largest process control system for wastewater utilities (2010):
    • In 6 counties.
    • Sewage services for 435.000 inhabitants.
    • 145.000 m3/d of wastewater treatment capacity.
    • 32 wastewater treatment plants.
    • Over 700 wastewater pumping stations.
    • 3230 km sewer network.
  • 15 wastewater sub-centers and a corporate head office.
 
Integrated process control system for potable water services at DRV Plc.:
 
  • 1.400 objects in total, connected into a unified integrated process control system out of which 600 are potable water facilities.
  • Hungary’s largest process control system for water utilities (2010):
    • In 6 counties
    • Potable water services for 370 settlements.
    • 418.000 m3/d water production capacity.
    • 6008 km water distribution network.
  • 4 potable water sub-centers and a corporate head office.
 
The process control system has been created on a webSCADA platform.
 
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ZALAVÍZ Ltd. - Integrated process control system for potable water and wastewater services, using webSCADA software

Main characteristics:
 
  • 700 objects in total, connected to a uniformed, integrated process control system.
  • Covers the entire operational territory of Zalavíz Ltd.
    • Water supply for 162 settlements.
    • 40 water treatment plants and 20 wastewater treatment plants.
 
Information about the system:

The webSCADA 6 process control system is running on 2 redundant servers that are located in the centre, and the data are saved into the central Oracle data base.

The system is operated at the dispatch centre on 8 large-screen TVs and at additional working station 24/7 work schedule. The authorized users of the company are able to access the system through the intranet network of the corporation at any time and place. There is online data connection between the webSCADA and the Technical Information System of the company for data synchronization.
 
The operation system is made-up of the following sections:
 
  • heavy-current equipment, distributors
  • inverters
  • primer devices
  • local control equipment (PLC)
  • data transfer
  • central control equipment
 
Drinking water process control system:
 
  • Zalaegerszeg municipal and regional system
  • water treatment plants in Zalaszentgrót and its region
  • water treatment plants in Lenti and its region
  • water treatment plant of Zalalövő
 
Wastewater process control system:
 
 
  • wastewater pumping stations in Zalaegerszeg and its region
  • wastewater pumping stations in Lenti and its region
  • sewerage network of Zalaszentgrót
  • WWTPs of Zalaegerszeg, Lenti, Zalaszentrgót, Pacsa, Becsvölgye, Esztergályhorváti, Zalaszentmárton

 
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Budapest, South-Pest WWTP - electrical and process control works

The 80.000 m3/day capacity South-Pest WWTP is probably the largest reference of our company in the field of wastewater treatment. The process control system was installed at the end of the 1990s with Siemens S7-300 PLCs and PROFIBUS communication. In the original scheme, three PROFIBUS networks were created (water line, sludge line, Biofor), including 7-18 PLCs per network. All three systems were functioning in an autonomous way and they were characterized at certain segments by distributed intelligence.
 
In order to realize the efficient energy management of the plant, there was a need for the extensive and integrated control of the whole plant in one system. In the new solution, the Master PLCs of the three autonomous networks were connected to each other via an MPI (Multi-Point Interface) bus system. During the enlargement of the plant, new PLCs were installed that were also connected to the process control system via PROFIBUS Couplers. At this moment the SCADA system is run by our own webSCADA 4.0 version, including server-client connection.
 
The type of PLCs was also significantly altered, nowadays Schneider, Omron and Siemens S7-300, S7-1200 and S7-1500 series can be also found. During the last upgrading, the 20-years old S7-300 PLCs of the sludge line were replaced by modern S7-1500 versions and the changeover was very smooth. Future development plants will focus on the change of PROFIBUS communication to PROFINET and the replacement of the copper cables of the communication network to optical cables.
 
 
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MOL Plc. – electrical and process control works of the WWTP at the Duna Refinery Plant in Százhalombatta

It was a true professional challenge to carry out this project, since despite the large volume of work we only had a 3,5 months deadline and it is also important to mention that the WWTP is located in an area, where there is a danger of explosion at the Százhalombatta Duna Refinery. 70% of the project site was in a dangerous area regarding explosions, hence the work had to be carried out with the respect of some special safety prescriptions. The delivered technologies also had to comply with strict standards.  
 
During the project execution, we used more than 165 km of cables, the communication of the installed process control systems is secured by a broadband optical controlnet network. The control of the plant is provided by 7 PLCs and 7 HMIs.
 
The main functions of the plant:
  • Sewer Separation
  • Load equalization
  • Oil and grease removal
  • Mechanical and biological treatment
  • Sludge Treatment
  • VOC treatment
  • Garbage Incinerator
     

 
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"Small" Lake Balaton monitoring system

The II. phase of the „Small” Lake Balaton water protection system project was implemented within the framework of a KEOP investment between 2012-2015. Our company was subcontracted by OVIBER. We integrated into the system the stations that were already installed during phase I. and at the same time the complete hardware and software system of main- and sub-centres were upgraded. Within the system, the Water Management Directorate in Szombathely is functioning as the main centre, while the operation unit in Keszthely as a sub-centre. These two centres operate and control the following systems and stations in an integrated way:  
 
  • Small Lake Balaton I. phase: 38 already existing member stations
  • Small Lake Balaton II. phase: 12 new member stations
  • Small Lake Balaton II. phase: 8 new automated water sample collecting station
 
The communication between Keszthely station and the water management directorate of Szombathely takes place via the internal network of the water management directorate.
 
The previously deployed fix PC supervision centres were replaced by a mobile supervision laptop. The internet connection for this system is provided by the internet network of water management directorate in Szombathely.
 
The communication with the field stations takes place by Modbus TCP/IP protocol via GPRS data transfer.
 

 
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Mercedes

We carried out programming works at the Z2 raw body assembly lines in the new body shops of Merceds Benz in Kecskemét (HU) and Bremen (DE). We carried out the programming based on Integra Standards.

Tasks:
 
  • Connecting the spare parts fitting, adhesive, piercing and welding robots of the various working stations to the station PLC.
  • Synchronization of the movement of robot arms.
  • Programming of safety PLCs.
  • Transmission of alarm and collected data to the Integra system.
 

 
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Várpalota district heating system

Within the framework of the control technological upgrading of the Várpalota district heating system, we developed a new webSCADA 6 process control system. The centre of the programme is the dispatcher of the heating centre, where the operation of the system is supervised on several large-screen monitors in a 24/7 working schedule.

The signals of the electricity consumption meters and heat quantity censors (Sontex, Actaris) as well as the signals of the PLCs that operate the system are all integrated to the process control system.
One of the greatest improvements of the display functions is that the users can look at the whole process flow of the complete heating network on one single enlargeable picture and on the different levels of enlargement, different relevant data are displayed. With the introduction of this function, we are helping the operators to be able to review the processes of the system in a much easier way and to understand the functioning of the different technologies.

A new heating centre control system was implemented with Siemens PLCs in 11 heating centers, the signals of which are send to the process control system via GPRS communication.
 
The signals of the Telekont PLCs that were previously controlling the heating centres of the system and the existing cable communication are displayed by the new communication control software that was specifically written for webSCADA 6.
 

 
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Public building in Szigetszentmiklós

We were sub-contracted by Grabarics Ltd. to carry out the heavy current and solar system installation works of the Public Office in Szigetszentmiklós. Within the framework of this project, a 7.000 m2 building was constructed that hosts 4 public institutions of the Processus. The project execution began in February 2016 and the successful technical handover took place in August the very same year. Within the framework of the project, we carried out the following heavy and light- current installation works:
 
 
  • Installation of electrical networks, fittings, and cabling in offices, corridors and public places.
  • Installation of the public and parking lighting systems.
  • Deployment of luminaires, and backup lighting system.
  • Manufacturing and installation of the main and sub-distributors.
  • Implementation of an RWA system.
  • Deployment and commissioning of a 20kW photovoltaic system.
     
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Integrated Technical Information System at Vasivíz Waterworks Ltd.

In 2007, VASIVÍZ Waterworks Ltd. aimed at developing a complex corporate information system that covers the company’s economic and technical recordings in such a way that the particular sub-systems are closely integrated with each other. The strategic goals of the corporation were planned to be achieved by the gradual establishment of a modern water utility operational structure in which the strategic leadership-based company management is supported by an integrated information system. This system was developed with the aim to modernize the control and supervision schemes in the company’s technical fields.
                                                                               
The Technical Information System that was developed by us has the goal to create such an information system that covers all of the technical activities of the company. The System help to manage the information the areas, which are not covered by the general economic information system. As a consequence of this, the corporation will receive support for performing its core activities. The system was sector specifically developed for water utility companies. The product is an information system that provides completely integrated solutions and functions in a platform independent and unified environment. Through its wide-scale parameterization options and modularity, it can adopt to the continuously changing needs of the user. The Integrated Technical Information System helps to secure the optimal operation mode, since based on the available modules, it can be specifically configured for the customized needs of the user.
 
We are providing a complete solution that enables the collection, organization, management and display of data through processes that are based on a reliable technology.
 
The Integrated Technical Information System is connected to and cooperates with the process control, process supervision and economic information systems. These systems exchange information with each other and they complement each other’s functionality. This will allow that within the corporate structure, the right information will be available at the right place, in the right format.
 
At VASIVÍZ Ltd., the following modules were installed:
 
  • Technical master data module
  • Geospace module
  • Maintenance module
  • Work sheet module
  • Operation module
  • Energy module
  • Report preparation module
 
The advantages of the Integrated Technical Information System are the following:
 
  • Integration of the company’s technical processes – without multiple data transfer;
  • Elimination of parallel activities;
  • At the touch of a button, up-to-date information about the company’s technical processes (production data, technical objects,….);
  • Unified corporate information technology, unified user surfaces, identical documents;
  • Target specific configuration from the selected modules, it can be gradually introduced;
  • Up-to-date reports;
  • Possibility to allocate different levels for user access;
  • Technical and economic decisions based on more reliable figures;
  • Historical data;
  • More effective and more efficient workforce utilization in the long term;
  • User-friendly Windows interface;
  • Easy to handle;
  • Reliable, advanced transaction management;
  • Short response time;
  • Fully integrated solution;
  • Works on a redundancy-free database;
  • Its modules are real-time;
  • It relies on an SQL-type database manager;
  • Built-in standard interfaces towards the process control systems;
  • Built-in standard interfaces for Economic Information Systems and Human Wage Systems;
  • Optimization opportunity in multiple modules;
  • Support for business plan making;
  • The most advanced GIS technology: Autodesk Topobase;
  • Unlimited number of user licenses for the modules that were developed by us;
 
During the introduction of the system, we were careful to ensure the connection with the operating systems through simple, standard interfaces, and the gradual introduction and smooth transition was a priority. 
 
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FGSZ Ltd. (Natural Gas Transmission Company) - Universal Display Application

ithin the framework of control technology reconstruction project of FGSZ Ltd. (Natural Gas Transmission Company), we developed a new Universal Display application for the interfaces that are connected to the PLCS. The application runs on a JAVA basis.
The goal was to create such a technical display programme that can communicate in every physical environment and with every PLC regardless of their brands and to be able to realize the complex business functionality that is provided by the customer.

The main parameters of the application:
 
  • graphical and listed user interface
  • MODBUS TCP communication interface
  • central parametering programme
  • POST-MORTEM logging
  • event and status management, logging
  • file management
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Public lighting at Liget

Our company was contracted by Colas Alterra Ltd in 2018 for the execution of the new public lighting networks and the decoration of poles in Dózsa György street (Budapest) as well as the complete installation and reconstruction of the public lighting system, related to the construction of the water mains in Városliget.

In the I. and II. phase of the execution work, 128 pcs of 10 m long public light poles were erected, the majority of them were delivered with some unique deco features and equipped with modern, environmentally friendly LED lights. During the construction, more than 4855 fm power transmission cables were laid down.
 
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Yekaterinburg wastewater treatment plant

Yekaterinburg with a population of 1.3 million inhabitants is the 4th most populous city in the Russian Federation after Moscow, Saint Petersburg and Novosibirsk. It is located on the borderline between Europe and Asia at the feet of the Ural Mountains. The settlement was founded in 1723 and it is one of the stations along the Trans-Siberian Railway. One of the most significant historical events of the city is that after the outbreak of the October Revolution of 1917, Tsar Nicolas II was assassinated here.
 
The expansion, full-scale modernization and reconstruction of the „Northern” WWTP begun in 2009. Adjusting to the specifications of the technical designs, most of the hardware and software units are Siemens products in the process technology and controls system. The 0.4 kV distribution cabinets were manufactured in Hungary and delivered to the installation site. The central SCADA is WinCC with a Russian language user interface. The PLCs are of S7-300/CPU 315DP type.

Within the framework of the first reconstruction stage, we commissioned the installed PLC cabinets in the new blower engine-room. This equipment is responsible for the supervision and control of the new biological line. Its range of supervision covers 4 pcs of pre-sedimentation basins; 8 pcs of post-sedimentation basins (with chain excavators); raw and excess sludge transfer pumps and the two-line biological treatment tanks (8 pcs of mixers, 8-8 pcs of nitrate and sludge recirculation pumps and related shut-off valves). In addition to this, the dispatch centre with the central computer was also established.

The second reconstruction phase was implemented in 2010. The distributor is located in the disinfection building and it is responsible for the UV disinfector, the related service stations (industrial water intake structure, leachate water lifting stations) and the analyzer of the treated water.
 
The commissioning was continued in 2012 within the framework of the third reconstruction phase. The PLC that is located in the chemical engine room is responsible for the lime milk and iron-salt dosing.
 
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Referencemap