Photo Contest & Calendar 2017

Calendar Stories 2017

Please find below the stories of 2017, related to the theme "Turning your (waste)water into profit". Every photo tells a personal story that clarifies what “PROFIT” means for Nijhuis customers, Nijhuis team members, business partners and our environment, as a response towards a CIRCULAR economy.

December | Turning wastewater into clean water, biogas and energy

Made by: The Nijhuis Team

Since 2013, one of the leading meat and poultry processing production companies in Poland, Cedrob, is turning wastewater into clean water, biogas and energy. The company has its own breeding farms, hatcheries, broiler breeding, poultry slaughterhouses and processing plants in Poland.


Cedrob strives to be energy-self-sufficient. Next to operating 2 slaughterhouses with a total capacity of 150.000.000 broilers and 900.000 geese per year, they are also hatching 160.000.000 eggs, and producing 720.000 tons of fodder per year. Nijhuis acted as total WWTP and biogas solution provider, taking care of technological & civil designs, equipment supply and installation & commissioning to realize the environmental ambitions of Cedrob. The advanced WWTP is designed to treat different types of wastewater from Cedrob’s slaughterhouse in Ciechanow.

3rd extension of the wastewater treatment plant

Based on the professional cooperation and the results achieved in phase I and II, Cedrob has awarded Nijhuis the 3rd extension of the wastewater treatment plant. The total system capacity will reach 9000 m3 / day of process wastewater and 500 m3 / day of rendering wastewater. In order to handle the additional load of wastewater, the expansion consists of a new filtration system, flocculation system, flotation system, a fifth digester tank, extension of the biological treatment system with two activated sludge flotation units and a new aerobic biological treatment system to treat the centrate water.

Moreover, the existing plant will be upgraded with an i-DOSE system in order to optimize the dosing of chemicals and reduce the operational time of the plant. The office of the Nijhuis plant manager, effluent coach and operators is also upgraded into a real Nijhuis MODULUTION i-ACADEMY and i-MONITORING office center.

Due to our solid innovative solutions, we turn the wastewater of Cedrob S.A. into sustainable PROFIT!

  • Cedrob-Calendar
  • November

November | Proudly presenting a freshly caught fish

Made by: Julija Rjabova

About the picture
“The little girl you see on the picture, who present a freshly caught fish, is my daughter Elizaveta, she was 3 years old during that time. She loved fishing since she was a little girl, now she is 13, and she continues to love fishing. This photo was taken in Summer on the Lake Shlino. My family love to come to this place, where we have a little house. The lake is located between Saint-Petersburg and Moscow- in Novgorod Area in Russia. The nearest city is Valday.”

About the history of the places

“About 60 Neolithic sites were discovered near Lake Shlino. Recent years have been intensive excavations of cemeteries of culture of long barrows, which are associated with the first Slavs back in the fifth century AD during the Great Migration of Nations. The culture of long burial mounds itself was discovered in 1972 by archeologist Dmitri Alexandrovich Krainov.

The harsh northern nature includes some beautiful places and lakes to visit such as Lake Shlino but also impenetrable forests and swamps. One day, my husband went to the forest for mushrooms, and lost his way. He had a phone with GPS with him, but here you could not catch a signal everywhere. So, he roamed the forest for about five hours, without the connection with the world, and stumbled for two mushroom pickers from the local who helped him find the way. It is such a hard-to-reach places here.”

October | 24/7 monitoring of a 20,000 m3/d wastewater treatment rental installation

Made by: The Nijhuis Team

Marafiq is the utility lifeline to the industrial cities of Jubail and Yanbu. These two cities are a beacon of light on the Kingdom’s journey of national economic development and privatization. Jubail and Yanbu have had resounding success in establishing an industrial support base and infrastructure which encourages domestic and international investment in primary and secondary industries, and in providing job opportunities for Saudi nationals.

The background

Marafiq collects wastewater from several companies and petro-chemical industries. The wastewater is then collected in aerated lagoons and treated. In 2015, Marafiq needed a fast track solution to treat an additional volume of wastewater for early 2016. To meet the deadline and to run the plant beginning in January 2016, the Marafiq approached Nijhuis and a contract was signed in July 2015.

The Nijhuis Solution

Thanks to the standardization and prefabrication of IPF units at the Nijhuis Headquarters in Doetinchem, within 6 months, Nijhuis completed the engineering, procurement, production, transport, customs, site work, installation and the start-up. The installation will be rented for three years and the solution consists of 9 Flocculation units (PFR 100S), 9 Flotation Units (IPF 135), 2 containerized dosing and power distribution systems and 3 decanters. By January 2016 the plant was up and running, thanks to the efforts of the Nijhuis team during the Christmas Holidays.

The customer chose Nijhuis particularly for the flexibility of our company, including the capability to manufacture our own equipment. Since 1 January 2016, the values are monitored daily by the operators and the Nijhuis i-MONITORING service department in Doetinchem.

Due to our 24/7 monitoring services, we turn the (waste)water of several industrial companies into sustainable PROFIT!





September | Using water as a natural power source

Made by: Rudi Hillen, Mechanical Engineer Nijhuis Industries

Winner Nijhuis Photo Contest 2016

For more than 400 years, the people of Denekamp in the Netherlands have been using water from the Dinkel river as a natural source of power for the waterwheel mill which produces oil, grain and sawing wood. The water mill belongs to the estate of ‘Singraven’. A water wheel is a sustainable machine for converting the energy of flowing or falling water into useful forms of power, often in a watermill. Paddle-driven water-lifting wheels already had appeared in ancient Egypt by the 4th century BCE.

Rudi’s motivation behind the picture

“Thinking about the Nijhuis mission "Turning (waste) water into PROFIT” I came up with how people did this in the past. In the Netherlands, the (wind) mill appeared at the end of the 12th century. Less known are the waterwheel mills. These types of mills were built in the 17th century initially for papermaking.

Somewhere in September 2016, together with my son Koen, we went out to take pictures of this waterwheel mills. Because it was “Open Monumentendag” (a Heritage Day) there were many mills open for viewing. We visited that day the mills of Singraven. The weather was good and we made I believe more than 50 pictures of this beautiful, well maintained mill. Lots of people were visiting this, still functioning, mill that day. The mill was in operation and you could see how grain was milled and trees were sawn into planks. A nice beautiful day with a beautiful picture as a result.”

We thank Rudi for his personal story behind this natural power source, turning (waste)water into sustainable PROFIT. With his story and picture, he is the winner of the Nijhuis Photo Contest 2016!

About waterwheel mills
A water wheel is a machine for converting the energy of flowing or falling water into useful forms of power, often in a watermill. A water wheel consists of a wheel (usually constructed from wood or metal), with a number of blades or buckets arranged on the outside rim forming the driving surface. Most commonly, the wheel is mounted vertically on a horizontal axle, but can also be mounted horizontally on a vertical shaft, for example the tub or Norse. Vertical wheels can transmit power either through the axle or via a ring gear and typically drive belts or gears; horizontal wheels usually directly drive their load.
Read more:

August | Chemical free disinfection for a more sustainable environment

Made by: Maintenance manager Perry Janssen from Radboudumc and Marcel Oonk from Nijhuis Ozone Solutions

To prevent bacteria growth and legionella outbreaks in cooling towers, chemicals can be added to disinfect cooling water. However, disinfection with hazardous chemicals is not sustainable. Therefore, the Radboud University Medical Centre (umc) in Nijmegen amongst others has chosen for cooling water management with ozone, "It's energy efficient, no chemicals are used, safer, and the blowdown water quantity is reduced”, said maintenance manager Perry Janssen from Radboudumc.

Follow the principles of the circular economy

The sustainable management of cooling water is in line with the sustainability policy of Radboudumc for waste, energy, procurement and construction. The medical center follows the principles of the circular economy as a starting point for sustainable business. Water management with ozone saves a lot of intake water compared to traditional disinfection with chemicals, maximizing the profit of this disinfection method.

Additionally, blowdown water quantity will be reduced and no hazardous chemicals need to be stored and carried around by employees. Because no chemicals will be added into the discharged water, there will be also huge savings on regional water authority’s costs. "We are now investigating if we can reuse the blowdown water," says Janssen.

Six Nijhuis ozone installations

The cooling water will be used for, for example, air handling systems, MRIs and CT scanners. Six Nijhuis ozone installations are installed at approximately one square kilometer of land. In winter, when the ambient temperature drops down, some cooling water systems can be turned off and during hot days the hospital has additional capacity to use all the cooling towers.

The cooling water system is continuously monitored by Nijhuis i-MONITORING and samples are taken every month by an approved body. An advanced remote system reads the installation and Janssen asks his mechanics every week to inspect the systems.

Ozone disinfection of cooling water systems, safer and more sustainable

“As a university medical center, we want to be progressive in the field of cooling water management”, said Jansen, the reason why Radboudumc switched from chemical disinfection to ozone for more than 10 years ago. “With a decent ozone concentration and flow there is no chance of biological activity and the passivating effect ensures that the wall thickness of the tube bundle will be unaffected”, says Marcel Oonk, operational director of Nijhuis Ozone Solutions. Janssen can also proof this statement with their own research.

Use the natural power of water

"With ozone, you use the natural power of water," said Oonk. Ozone (O3) is generated from oxygen and it breaks organic bacteria very efficiently and then goes back to harmless oxygen (O2). Ozone prevents bacteria growth and legionella outbreaks and creates an alkaline environment (pH> 8.5) where corrosion has no chance.

Ozone is therefore the most sustainable solution for cooling towers, but can also be applied in other water reuse applications, such as the dairy industry for the treatment of water of the evaporation of milk. In addition, ozone is also used as oxidation power to break down medical residues to ensure the environment is not affected.

Nijhuis provides a total water management concept. “Firstly, we investigate the demands of our clients, then we present a total management and control plan and after delivery we monitor the systems for efficient, sustainable and safe use of cooling water."

We thank Radboudumc for this wonderful project by turning cooling water into sustainable profit towards a circular economy!

About Legionella

Legionella is a serious threat. Approximately around thousand people a year die in the Netherlands because of the legionella disease. Especially people with a reduced immunity are at risk. Therefore, the government in the Netherlands has set high demands for the use of open cooling towers to prevent against legionella outbreaks. Organizations that fail and do not meet the demands can be punished with heavy fines.







July | It’s all about PEOPLE

By: Rafał Małek and Nijhuis team Central Europe

Into the wild…on the Krutynia river in Mazury, Poland

“The Story begins in September 2016 on a beautiful and sunny Friday. One of this last summer days when the sun is still shining, but nature slowly change the colour of trees and grass. Nobody knows where we were going, so our team enters the bus and starts the journey into the unknown…

The road goes somewhere North-East into the wild to a beautiful green area. After a couple of hours, in the very dark night, the bus suddenly stopped, from the deep forest suddenly comes a dangerous group of bearded warriors with maces, spears and torches. Our blood in the veins stagnates, but adrenaline explodes when we see that there is no chance to escape. We all became ‘hostages’ of the ‘Galindians tribe’ and the only way to regain freedom was to meet the invaders demands.…

We stayed for the night in Alkos Land, the magical part of Galindia, situated at the mouth of the Krutynia River, immersed in greenery and absolute silence, interrupted only by the birds and the river.”

The kayak trip
“The next day a kayak trip was planned. The Krutynia is one of the most famous waterways, repeatedly referred to the "most beautiful canoe trail in Europe". We flow on the most beautiful and wildest part of the Krutynia River, through the landscape-water-forest reserves. After 2 hours of rowing we have made another turn on the river, and then we saw a beautiful, wide place lit up with a lovely sunlight.

We have stopped an ask everybody to gather all canoes into one group. It took some time and some effort to keep in such position against river current. I stood up and took a few pictures. By doing this I felt a great gratitude for being there, surrounded with beautiful weather and a clean river.”

Team spirit
“Sometimes when you are doing something some thoughts just strike you suddenly. This was exact that moment, that I not only have seen people and nature but also a kind of ‘team spirit’ joining us together in something more than just common team. Looking at this picture I still feel the true joy we feel that time. This day ended around 4 a.m., there was a campfire, singing and we spend time together…

The next day, we were divided into two tribe’s groups and took part in tribal struggles. We shot some arrows with a bow, put some horseshoes on, used the Galindians knives and more and more Galindians related activities.”

It’s all about PEOPLE
“The Nijhuis Central Europe team is a special team in today's world. Our office is a place for individuality, for team work, for achieving mutual challenges working side by side. We are united not only by common experience but also because of very strong joint vision of future aims. And last but not lease our team is a place for friendship. And as one of my favourite books says by Don: ‘Friendship is everything. Friendship is more than talent. It is more than the government. It is almost the equal of family.”

We thank Rafał and the Nijhuis Industries Central Europe team for sharing their teambuilding story!

Some historical facts
“The Iznota area was place where the tribes of the Galindians lived since the 5th century B.C. until the 13th century. The first information which was found about these people living in the area of the Great Masurian Lakes, was provided by Tacitus, Ptolemy. According to oral reports, the Galindians lived mainly in wetlands and marshy areas, which would have allowed them to avoid invasions from other tribes. In such areas Galindians probably built wooden huts on piles hammering in the swamp.

“With the same way-piles, they also built paths that led through the most dangerous parts of the marshes. To the village usually ran a dozen of such ways, of which only a few reaches the destination. The rest of the paths rapidly ends in the middle of the swamp, leaving the enemy tribes in the middle of nowhere, unabled to reach the Galindian settlement. The Galindians lived in friendship with nature, creating a model of democracy based on common language and customs and religious traditions. They did not create any political structures, neighborhoods formed Lauks inhabited by several families.

All the major issues were decided by rallies (Wayda), led by Wajdelota. The Galindians territory run the Amber Road, an ancient trade route for the transfer of amber from coastal areas of the North Sea and the Baltic Sea to the Mediterranean Sea.

​June | The value of digestate/manure - Nijhuis GENIUS

By: the Nijhuis team and our partners

The award-winning Nijhuis GENIUS solution turns manure/digestate into biogas, green minerals and clean water. The first large-scale “Green Mineral Mining Center” will be built at Groot Zevert Vergisting B.V. Beltrum, the Netherlands. GENIUS is consisting of several modular building block solutions to treat digestate/manure.

Several farmers and manure processing facilities in Western Europe and North America are challenged to manage their manure or digestate. Digestate is the solid/liquid fraction after digesting manure into biogas. Manure consists for more than 90% out of water and low concentrations of minerals, resulting in high transportation costs and impact on the environment by not valorizing the manure. However, pig, cow and chicken manure can be turned into biogas and electricity and green minerals such as clean water and fertilizers.

Total modular solution for manure
Nijhuis GENIUS (in Dutch "GENIAAL")
is a total modular solution for manure and turns raw manure or digestate (the solid/liquid fraction after digesting manure into biogas) into separated phosphate, nitrogen and potassium fertilizer and clean water. The principle of GENIUS is based on producing valuable green minerals from raw manure and digestate and will help for example to contribute by solving the manure- and phosphate surplus in Western Europe based on an innovative, cost saving and sustainable way.

Modular building block solutions
GENIUS is consisting of several modular building block solutions. After the digesters and biogas production, the first step of GENIUS is the separation of manure or digestate into a solid and liquid fraction. The second step is treating the liquid fraction with flotation technology where a large part of the total suspended solids will be removed from the liquid fraction. The third step is treating the liquid fraction with an ammonia stripper and recovery system (AECO-NAR), producing ammonium based nitrogen fertilizer. The fourth step is treating the liquid fraction with membrane filtration followed by evaporation into organic potassium fertilizer and clean water. However, depending on the local situation not all solutions have to be included. At Nijhuis we will closely develop with the client to best possible business case to generate sustainable profit with the lowest OPEX and/or lowest CAPEX.

Green Mineral Mining to achieve regional balanced fertilization
GENIUS is a real “Green Mineral Mining Center” and can produce for example 10-20% in volume of phosphate rich solid fraction with 3-6 % of phosphate, 5-10% in volume of liquid nitrogen fertilizer with 7-8% of ammonium sulphate, 5-10% in volume of organic potassium liquid fertilizer with 7-10 % of potassium and 60-80% of clean water. Clean water can be used as cattle feed water or discharged to surface water. The produced green minerals ensure regional balanced fertilization by dosing sufficient individual nitrogen, phosphate or potassium fertilizers for pasture land or arable crops. This will reduce the rinse of fertilizers into ground and surface water and reduces the use of the chemical fertilizers.

We are proud to build the first Green Mineral Mining Center at Groot Zevert Vergisting together with our partners, turning manure into sustainable profit as green fertilizers and clean water!

Last February, the Dutch television program “Het Groene Oosten” interviewed Arjan Prinsen from Groot Zevert Vergisting and Wilbert Menkveld from Nijhuis Industries about the modular GENIUS solution.

Video "Het Groene Oosten" >>
(The video is in Dutch)






May | Rehabilitated seals return to nature

By: the Nijhuis team

In September 2016, the Nijhuis team visited the Seal Rescue and Rehabilitation Center (SRRC) Pieterburen and released three rehabilitated seals. Five years ago, the Nijhuis water reuse installation was installed at the center. Previously, fresh water was needed to prevent the pollution in the pools because the existing treatment didn’t work sufficiently.

Water reuse installation

As a solution to prevent quickly polluted pools, Nijhuis provided a water reuse installation which ensures huge water savings and clean effluent which meets the customer’s sustainable requirements. The water in the pools has a constantly clear quality which is a huge advantage for the seals and for the team members of the center that visually monitor the condition of the seals. This type of installation is another successful example that Nijhuis supplies smart customized installations in combination with their application knowledge which meets the requirements of the environment and customers.

Nijhuis team reference visit

Early in the morning, the Nijhuis team left by bus to be on time at “Lauwersoog” in the North of the Netherlands. A ship brought the team to the “Engelsmanplaat” for a short walk before visiting the seal center. On board were three young seals which were rehabilitated by the center and were looking forward to enjoy their freedom.

The Nijhuis Staff Association supports the good work of the seal center and therefore they have adopted the three seals. The adopted seals “Hilkia”, “Spetter” and “Lucky “were released back into the Dutch Wadden Sea.

At the seal center, the dedicated staff of the Pieterburen center explained how the Nijhuis installation works and how the seals are rehabilitated. The Nijhuis installation is continuously in operation in order to ensure a good water quality and is consisting of two filters (NDF), Flocculator-DAF (PFR and IPF), effluent polishing (CarboPure) and a disinfection step.

We thank the seal center for their hospitality during this beautiful day and very special moment, turning (waste)water into sustainable profit!

April | Fast track delivery of Nijhuis smart and MODULAR (waste)water treatment solutions

By: the Nijhuis team

Five Nijhuis experts shared their vision about the modular Nijhuis BoxFrame solutions and their impact on fast track delivery and turning (waste)water into sustainable profit.

“Modular and temporary solutions address the requirements of a growing number of customers to extend production infrastructure lifetime, improve sustainability and reduce total cost of ownership”, said Emiel Koster, Area Sales Director at Nijhuis Industries and actively involved in marketing and sales.”

“We design, build and realize containerized, prefabricated skid or/and BoxFrame plants ensuring we have the flexibility to realize a modular plant with the lowest possible total cost of ownership. Our BoxFrame solution is a state-of-the-art modular set-up reducing footprint and simplify civil construction in comparison to conventional plant design and delivery.”

Prefabrication of Nijhuis BoxFrames
According to Barry Domhof, production manager at Nijhuis Industries: “Each modular BoxFrame is manufactured, pre-assembled and equipped with our decentralized electrical control system (i-CONTROL) at our state-of-the-art facilities and thoroughly tested at our sophisticated Nijhuis workshop in the Netherlands.”

Standardization of modules - plug and play
“Due to the standardization and modular nature of the Nijhuis BoxFrames the lead time for the engineering of the project is significantly reduced”, said Eric Thuis, Team Leader Lead Mechanical Engineering at Nijhuis Industries. “Sometimes it feels like we are playing with Lego blocks for adults.”

According to Max Gruson, Service Manager at Nijhuis Industries: “Operators are also actively engaged during the engineering and factory acceptance test acquainting themselves with the technology, which is shortening the hand-over time on site and improving the reliability of the operation.”

Cities of the Future

“Smart and flexible solutions secure trouble-free treatment of wastewater and potable water supply for ‘cities of the future’. By using our innovative modular design philospy cities will contribute to the Sustainable Development Goals, such as SDG 6 (clean water and sanitation), SDG 11 (sustainable cities and communities) at lower costs compared to regular designed solutions!”, ended Wilbert Menkveld, Research & Development at Nijhuis Industries.

We would like to thank Emiel, Barry, Eric, Max and Wilbert for sharing their vision on fast track delivery of smart and MODULAR (waste)water treatment solutions, turning (waste)water into sustainable profit.

Read the full story >>



  • Calender-March-Acherensua-Ghana
  • Calender-March-Acherensua-Ghana2


Made by: Toon van den Heuvel, Nijhuis process engineer

Behind the photo
“I made this photo after a field trip to Acherensua where we came to look at works on a water tower that was built there with Dutch development aid. I made it because the people were so happy and grateful seeing us. The particular picture was made at a stand-pipe that is supplied by the new water tower.”

Lessons learned
“We all can learn a thing from the hospitality and gratefulness these people had. The people are genuinely happy receiving water and sanitation facilities even though they have to share one stand pipe with 20 families. In the Netherlands, we consider fresh water from our tap to be normal and don’t ever think about it. I’m privileged to have been born in the Netherlands and could be complaining less and be satisfied more with our standard of living.”

Photo location - Acherensua in Ghana
“Acherensua is a town close to the capital town of the Brong-Ahafo region Sunyani. Brong-Ahafo was created in 1958 from Bono state and named after the dominant and native inhabitants, from the Akan tribe, Brong and Ahafo. The people of Acherensua are mostly farmers working in the cocoa production.”

Brong Ahafo is renowned for its large cocoa production and agriculture agribusiness industries. Brong-Ahafo contains many Akan cultural and wildlife attractions, but it is less known to tourists than the Ashanti or Central region. Major attractions of Brong-Ahafo include Kintampo, with its beautiful waterfalls (Kintampo waterfalls) and nature reserves, and Fiema, home of the Boabeng monkey sanctuary, a short distance outside Sunyani, and national parks, Bui National Park and Digya National Park.

The project
“After completion of the new water tower and 10 stand-pipes the acces to potable water improved. Also the time they had to walk to get water for basic use reduced significantly for a lot of families. The water tower project is part of the aim to improve way of life of about 5000 people in the peri urban area of Acherensua, communities that until now were deprived of access to safe drinking water. Extension of the distribution system coupled with public standpipe construction will improve the access to drinking water against the regular water tariff. This, together with the water and hygiene training will improve health for 5000 people."

We thank Toon for his personal photo and story about improving sanitation and acces to clean water, turning water into sustainable profit for the people in Acherensua, Ghana.

February | MELAMINE REMOVAL from mineral fertilizer wastewater

Made by: Doru Popa, Nijhuis supervisor and health & safety representative on site during the Azomures project

“The story of Azomures WWTP dates back to 2012 when Swiss group Ameropa bought the largest fertilizer plant in Romania-Azomures and engaged in an environmental revamping masterplan. In June 2014 Nijhuis came with the BIOCTOR-MELAMINE solution to treat melamine and other nitrogen containing components and won the contract to deliver this large turnkey wastewater treatment plant for Azomures. We had roughly one and a half years to have a running treatment plant in December 2015. As it was a big project with lots of local subcontractors, Nijhuis hired a local site supervisor to breach the language barrier and also have a local Health and Safety representative on site. This is where I came in!”.

My first contact with Azomures and Nijhuis
“My first contact with this project was in September 2014 when I met the Nijhuis Projects & Engineering Manager and Project Manager for Azomures in a small Italian restaurant near the city centre of Targu Mures.

I enjoyed this first meeting, I really liked the job and after dozens of e-mails, a trip to Doetinchem to meet the project team and other couple of meetings, I was on board in June 2015. By then the works already started and Henk Oosterveld was the permanent Nijhuis staff on site. I must say that it was fortunate that Henk was on site as he is a real character, a good friend and made my transition to this new job easy and smooth”.

The Azomures site
“When I arrived on site the reebars were being mounted for the 2 big clarifiers and the first wall of the biological tank was poured so we needed to put the pedal to the metal because December was fast approaching so from then on, as Henk used to say: “Never a boring day on site”. The pace was unbelievable and soon the empty site started to look like a treatment plant.”

Coordination was the key to success
“Sometimes there were 4-5 companies working at the same time on a relatively small area so coordination was the key to success. You can imagine 2,3 crane trucks, concrete trucks, supply trucks, machinery, tens of workers on an area not much bigger than a football pitch and only one small, muddy access road. I must say Project Manager Rick did an amazing job always supporting us and coordinating everyone. We were also fortunate to have an incredibly helpfull Azomures team which were a huge support during the project.

“With the help of Azomures, our subcontractors CONA, Comterm and Spoting and the Nijhuis project team we managed to meet our deadline and in December the plant was up and running and performing over everyone’s expectations. The test period came soon after, the plant passed with flying colours and it was time to the handover in February 2016 which was a success as well!”.

Official inauguration September 2016
“Azomures decided to leave the operation of the WWTP to Aquaserv, the Mures county water company which took the operation over from Nijhuis and is still running the plant today. The final step of the project was the official inauguration in September 2016 and despite the bad weather it was a huge success. There was a big crowd with government officials, Azomures and Aquaserv staff, lots of media coverage, nice pictures, good food, cutting of the ribbon and champagne. The delegation from Nijhuis consisted of Project Manager Rick Knoops, Henri Besselink, Tomasz Jagielski, Menno M. Holterman, Ronald Ruijtenberg, Emiel Koster, Nijhuis agent/partner Anela Bobocea and myself.

The WWTP has one manager and 2 24/7 operators working there and the results are better than expected. The most important thing is that the client is quite happy with the results of the plant.

As for me, I am still working on the plant as a service engineer and also as a local sales representative and I must say Henks words of wisdom “never a boring day on site” still applies. As I am writing this I’m supervising and improving an emergency return pump. So it’s still a lot of fun!”.

The history of the city of Tirgu Mures
“First of all the city of Targu Mures is my hometown. The name translated to English would be “The Market on Mures river”. It’s a medium size city in the heart of Transylvania, located on the banks of Mures river surrounded by hilly terrain and forests. Its early origins are not clear but archaeological discoveries suggest there were human settlements dating to the stone age so it is as old as it gets. In the medieval period it was a part of the Austro Hungarian empire for hundreds of years and you can still see this as population of Targu Mures is 50% Romanian, 50% Hungarian.

The terrain surrounding Targu Mures is rich in salty water so there are lots of spa resorts and wellness centers. We were almost football champions last year, lost the title in the last game and now our team is bankrupt. After all, we have nice people, good restaurants, interesting nightlife, lots of sporting facilities and state of the art wastewater treatment plant!”

We thank Azomures S.A. for this wonderful project by turning wastewater into sustainable profit towards a circular economy!

Melamine Removal from fertilizer wastewater - BIOCTOR-MELAMINE
The R&D division of Nijhuis Industries developed specially adopted bacteria as seeding sludge to break the melamine in the wastewater, which is quite unique. Worldwide, there are more fertilizer producers who are searching for solutions to treat similar wastewater streams. To break down the melamine, you need specially adopted bacteria as seeding sludge during the start-up of a biological system. Using bacteria from conventional biological treatment plants as seeding sludge will not work. For this particular case, Nijhuis successfully developed these special bacteria.

  • February 2
  • Nijhuis-Industries-Drina-River

January | A lone river house with a beautiful view

Made by: Milan Krajnović, Sales Manager Nijhuis Industries in the Balkan region in Europe

Why and when did you make this photo?

“I took the photo of the river house in December 2014 when I visited friends in a small town, Bajina Bašta, in the west of Serbia to celebrate my friend's birthday. We spent three days together exploring the beautiful Drina valley and neighbouring National Park Tara.

Combination of the unique surrounding nature
In Serbia this site is quite well known, however, I enjoyed seeing it with my own eyes. What makes it so special is the combination of the unique, man- made structure and fascinating, intact surrounding nature.

Drina River house

The house on the Drina River is visible at the town entrance and it is one of the town's authentic symbols. From locals I learned that it was a group of boys that came up with the idea to build a resting place in the middle of the river and make sunbathing on the rock more comfortable. The year was 1968 when they put their plan in motion.

They used kayaks to transport some building material. Larger pieces were lowered into the river a few kilometers upstream, carried by the flow, then caught and pulled out on the rock plank by plank. The full standing house was erected on the rock in the middle of the Drina in the following year.

Fishing and resting place
From the time it was built, the house has been used for fishing and as a resting place for any swimmer or a passing kayaker .The Drina is an untamed river and the house was flooded and washed away many times. Sometimes it was successfully brought back, and sometimes the new house had to be built, each time better and stronger. 45 years later, we have the 6th house standing, which was built in 2010.

Drina Regatta
It was this place where the idea of organizing the annual Drina Regatta was thought up - a unique three-day summer event. It features rafting, concerts, parties as well as various contests such as competing in swimming , playing the trumpet and preparing a fish stew.

Hundreds of rafts and boats descent the Drina river starting at Perućac Lake, passing by this beautiful house, and finishing downstream in the town Rogačica. This manifestation gathers ten thousands visitors each year, the river house being its central stop.

I would recommend visiting this magnificent site to any traveller!”