NEWS
EDITION 14 | FEBRUARY 2018
“Turn your (waste)water into PROFIT” Wastewater in the plastic recycling industry
Largest industrialized botanical WWTP
AECO-FAT system for a poultry processing plant
GENIUS DAF is fabricated
“When it comes to success, it’s all about the PEOPLE”
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At the beginning of 2018, the Water and Wastewater International (WWi) listed CEO Menno M. Holterman at number 14 of the Top 25 Global Water Leaders. The WWi Top 25 Global Water Leaders initiative continues to grow in popularity as a barometer of the industry’s leaders. This year, the focus will be on active leaders who are driving their companies forward into the digital water age with a focus on innovation.
Nijhuis Industries NEWS Text Editor | Steven Nieuwboer & Menno M. Holterman Graphic Design | Benji Beunk Photography | Nijhuis Industries team
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‘When it comes to success, it’s all about the people’ “With the success we have achieved in the past and the recent win of the biggest project in Nijhuis history, as one of the leading companies in sustainable water use and resource recovery, the WWi nomination is a wonderful compliment for the Nijhuis people and team. We have mobilized our team to fully meet and satisfy the ever-demanding requirements from our Global clientele. ‘Success is a choice’, but, it does not come automatically. At Nijhuis we believe in anticipating the challenges within cities, utilities and industries that require smart, resilient and solid solutions in todays ‘fluid’ and constantly changing world.” Embrace the opportunities of the circular economy “We have much to offer our customers and communities alike and look forward to continuing our journey together to embrace the opportunities of the circular economy by creating a more sustainable world. Nijhuis Industries, our business partners, other stakeholders and above all you, can make an impact on how we are going to shape our future.” Respond to needs and requirements “By promoting best practice across our worldwide businesses, gained in more than 2,600 references, combined with continuous innovation and improvement, we can ensure that the wealth of knowledge that our global team has developed is used to your best advantage. Besides solving waste and water challenges, we are also keen to understand the issues thatt ‘keep clients awake’ in order to make sure our research & development activities will respond to your immediate and future needs and requirements.”
Last but not least, the large waste to value project in Egypt is a crowning achievement for the Nijhuis team, which is currently working hard together with our client and business partners to finalize detailed engineering and start manufacturing at our headquarters. The plant consists of Nijhuis proven technologies for the physical-chemical, aerobic and anaerobic biological treatment, active sludge and tertiary treatment, to meet the strict effluent requirements, and will optimise the recovery of biogas and energy from the effluent. This is of critical importance, due to the limited availability of power from the grid, and hence why the WWTP is designed to become self-sufficient and energy neutral. At the start of another new and exciting year I would like to thank our fast growing customer base around the world for their continuous loyalty and look forward together with our global Nijhuis team to become or stay your partner of choice.”
Kind regards, Menno M. Holterman, on behalf of the Nijhuis Industries team Chief Executive Officer
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Innovations to reduce, reuse and recover water and resources “The ten new innovations for municipal and industrial treatment applications introduced during the AIWW and Aquatech 2017 are perfect examples how we can turn (waste)water into PROFIT and develop the best business case with the lowest possible OPEX, CAPEX and R.O.I. For example the recent order in Croatia for a poultry slaughterhouse consisting of the game changing Nijhuis AECO-FAT solution (fat recovery), combined with a Nijhuis Screw Press (reducing sludge costs) and Nijhuis i-DOSE (reducing operational time and chemical costs) shows that clients today, are not only looking for solid solutions, but embrace newly introduced innovations to reduce, reuse and recover water and resources.
NORWEGIAN
SEAFOOD PIONEER to invest in wastewater treatment plant Norway is the second largest exporter of seafood worldwide, and the salmon industry is the second largest industry in Norway. Together with our Norwegian partner Sterner, Nijhuis will supply a Dissolved Air Flotation system (NPF200HX) to the Norwegian seafood pioneering company LERĂ˜Y. This will be operational in early 2018.
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Fully grown salmon will be processed by the on-shore LERĂ˜Y processing plant. Local regulations in Norway demand from processors that they treat their wastewater with a disinfection system before the water is disposed back into the fjords.
There are 4 legalized methods to treat the salmon wastewater: 1. Acidification with an 8 hrs retention time (requiring large tanks and chemical consumption) 2. Flocculation Flotation + UV (not preferable due to chemical consumption) 3. (Flocculation) Flotation + Hypochlorite (requires 15 min. of retention time) 4. (Flocculation) Flotation + Electrical generated Chlorine (requiring just 5 min. retention time) In close consultation with the experienced Nijhuis Process Engineers, Nijhuis selected option 4 because of the low retention time of the disinfection, resulting in a minimum system footprint. The operational goal of the Nijhuis DAF is to remove the oil and grease before water enters into the disinfection system.
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Commissioning takes place for the first-ever AECOMIXTM-IR system in Russia
MODULUTION-Boxframe installed at Quaker Oats
In the summer of 2017, Nijhuis supplied and installed to Jacobs Russia, a freeze–dried coffee production site near St. Petersburg. This is the first-ever anaerobic IR system in Russia, followed by an aerobic treatment system with an activated sludge DAF unit. The Nijhuis AECOMIXTM-IR system is a highly loaded anaerobic system with a minimized footprint. The technology includes a simple and efficient recirculation offering a more compact, robust treatment system. Nijhuis upgraded the existing installation to new effluent standards.
After tests and a review of possible technical options, a wastewater system existing of an internally fed drum screen (NRF 38/050) followed by a flocculation / flotation (PFR 005 & GDF 002) system has been chosen as the best solution. Due to very limited space at site, the first idea was to build the installation in a container. Due to specific installation and maintenance requirements, Nijhuis integrated the system in a boxframe, one of the modular set-up possibilities of the Nijhuis Industries MODULUTIONS range.
New AECO-FAT system for a poultry processing plant in Croatia Recently, a large poultry processing plant in Croatia awarded Nijhuis with an order for a new wastewater treatment system, including the game-changing Nijhuis AECO-FAT, i-DOSE and screw press system (NSP). The plant is treating app. 3000 m3 of wastewater per day, which needs to be pre-treated before entering the local municipal treatment system. From conventional WWTP to profitable business case Initially the customer was looking for a pretreatment solution to be able to comply with the required discharge limits. Nijhuis firstly offered a conventional flocculation-flotation WWTP business case with the option of an intelligent dosing system (i-DOSE) and sludge dewatering screw press (NSP).
During the follow-up discussions, Nijhuis also introduced the AECO-FAT resource recovery system, supported by a business case, showing the additional investment required plus related ROI for the add-on.
This innovative solution consists of a dissolved air flotation unit, followed by a disconnector and separation system. With the recovery of fat, the Nijhuis AECO-FAT solution converts flotation sludge into valuable products and saves sludge disposal and chemical costs.
This resulted in a substantially lower OPEX because of controlled chemical dosing, recovery of fats as fuel-source and reduction of sludge-costs due to the dewatering which securing the client a profitable business case and turning their wastewater into PROFIT. About Nijhuis AECO-FAT As sludge minimization is a very important driver in wastewater treatment, Nijhuis AECOFAT separates flotation sludge into fat solids and water. Nijhuis Industries NEWS I www.nijhuisindustries.com
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A side effect of the system is the biogas generation from the wastewater. Once this was realized, Nijhuis was able to utitlise their added value service philosophy of combined project management, engineering, transport and installation which has enabled the system to be commissioned.
Nijhuis Industries installed a complete modular wastewater treatment solution at Quaker Oats in a modular boxframe set-up. The Quaker Oats Company, known as Quaker, is an American food conglomerate based in Chicago. It has been owned by PepsiCo since 2001.
CONCRETE MODULAR DESIGN Page | 6
Eight High Rate i-DAFs for Singapore Desalination plant
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Nijhuis is currently designing and will install eight High Rate i-DAF modules as pre-treatment for the seawater of Singapore’s fourth desalination plant in Marina East. It is the first dual-mode desalination plant, meaning it can treat both freshwater from the Marina Reservoir and seawater, depending on weather conditions. The Nijhuis DAF package includes the inline mixers for coagulant and flocculant dosing and top mixers for the reaction tanks, followed by the corrugated plate packs, skimmer systems and robust and well known Nijhuis i-AERATION system. With the new plant, on rainy days when the water level in nearby the reservoir is high, the excess rainwater that is discharged into the sea can be treated for use. Designed by Keppel Infrastructure Holdings, which will also build, own and operate the Marina East desalination plant, the facility will be able to produce around 30 million gallons of fresh drinking water per day, enough to fill about 55 Olympic-sized swimming pools when it is completed early 2020.
During dry periods when the water level in the reservoir is low, water from the sea will then be channelled to the plant for desalination. Water from both sources will be filtered during the first stage, removing larger impurities before going through a “dual flow chamber”.
The chamber will then pump water to the plant via a 1.8 km underground pipeline above the Marina Coastal Expressway (MCE). The system has been years in the making – a similar dual-mode technology has been in operation since 2007 at a full-scale pilot plant in Pasir Ris before applying it on a larger scale at Marina East.
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Green spaces for recreation The Keppel Marina East Desalination Plant is also the first to feature green spaces that can be used by the public for recreation.
All of the plant’s water treatment equipment will be located underground, topped off by a green rooftop which will accommodate about 700 people. Built on a three hectare plot of land, the plant will also be integrated with the Eastern Coastal Park Connector Network that bridges East Coast Park and Gardens by the Bay East.
MODULUTION-Container put into operation at Mondelez Opavia in the Czech Republic Nijhuis Industries Central Europe has commissioned a complete modular pretreatment wastewater treatment plant at Mondelez Opavia in the Czech Republic.
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Mondelez International Inc. is an American multinational confectionery, food, and beverage company with it’s headquarters based in Illinois, U.S. It employs about 107,000 people around the world. Consisting of the global snack and food brands of the former Kraft Foods Inc. The new WWTP system processes the wastewater of the Mondelez production plant.
The wastewater consists of substances and particles from the production of biscuits, jam, chocolate, honey and nuts. With a maximum quantity of around 670 m3/d and average 370 m3/day for stage 1, the plant system consists of a screw conveyor, balance tank, a flocculator (PFR 45), a flotation unit (GDF 12) and a screw press for the dewatering of the sludge. The maximum wastewater peaks will probably occur during the planned production outages (i.e. at the end of the manufacturing cycle during general cleaning) and only exceptionally in other situations or, possibly, in emergency situations.
In order to reduce civil work and the installation time on site, the delivered units are prefabricated in 40 feet Nijhuis MODULUTIONContainers. Because of the ‘plug and play’ and mobile nature, fast track expansion or relocation of wastewater utilities is now becoming even more affordable. The Nijhuis MODULUTION-Container solution is a stateof-the-art modular set-up reducing footprint and simplify civil construction in comparison to conventional plant design and delivery. The solution is suitable for every (waste)water capacity, standalone systems and full-scale plants.
Modular wastewater treatment for a cheese production plant in full operation Nijhuis Industries has built and successfully commissioned a completely integrated wastewater treatment solution in just six weeks, which is thought to be a world record in the industry and an ideal potential solution for clients facing tight deadlines. The plant is now in full operation and treats the wastewater of Umalat, a modern cheese production plant in Russia and one of the leading producers of fresh cheese from Caucasian type to Italian mozzarella.
Plug-and-play and fast-track solution, ready for the future The plug-and-play and fast-track solution has enabled Umalat to realize a state of the art wastewater treatment plant in a record period of time: simple, compact and pre-installed on the MODULUTIONS boxframe at the Nijhuis production facility in the Netherlands. The complete modular system consists of a filter, flocculation, flotation and dewatering screw, all installed in eight Nijhuis boxframes which are used to create and support the wastewater treatment operations building. The plant has the capacity to treat 700 m3 of wastewater per day, ensuring that the wastewater treatment plant is future-proofed for increases in the amount of wastewater as a result of expected production increases in the factory.
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‘Plastic Fantastic’ - Wastewater in the plastic recycling industry
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At the moment, the plastic recycling industry in the Benelux is booming. Currently, the cleaning process of plastics consists of shredding and spray-washing, or bath-washing. The water in these installations is recycled over a filter and reused until it is too polluted, then discharged and refreshed. Reduce high effluent discharge cost and reuse water Discharge and refreshing of this water leads to high costs. Washing with highly polluted water also creates a low quality product. 35 years ago, Nijhuis Industries already delivered one of its first chemical / physical DAF installations to a plastic recycling company (Morsinkhof) which is still in excellent condition and in use and a true example of a solid solution. Working of the installation The Nijhuis flocculation / flotation installations are put in the recycled water stream. The suspended solid pollutants are removed from the recycled water stream via the addition of a chemical polymer. Every day around 10% of the recycled water leaves the system via the produced sludge and the cleaned plastics. The same amount of fresh water needs to be added. Zero liquid discharge Finally, the wastewater recycling installation will result in zero liquid discharge of wastewater to the sewer or river. The washing process will be optimized and will result in an end product of superior quality. Recently Nijhuis installed an 80 m3/hr flotation system (IPF135) at Aufderhaar Plastic Recycling in Vroomshoop, the Netherlands. Starting from January 1st 2018, a second flotation system is rented to Quality Circular Polymers in Geleen, the Netherlands.
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LARGEST INDUSTRIALIZED
BOTANICAL GARDEN
Nijhuis Industries is to build the largest industrialized botanical garden wastewater treatment plant, together with its technology partner Organica Water. The project is for the world’s largest furniture retailer, and will treat the wastewater from a high-profile shopping center in Russia. Nijhuis integrates the Organica Food Chain Reactor (FCR) in a turn-key 1,000 m3/d treatment facility with Nijhuis pre- and post-treatment including advanced technologies to purify up to river water discharge quality.
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The pre-treatment solution is executed with Nijhuis screening and Dissolved Air Flotation (DAF) units and will remove the large particles from the wastewater prior to entering the Organica FCR. After the secondary treatment through the FCR, Nijhuis CarboPure (CP) and Nijhuis UV disinfection units (NUV) will polish the effluent to the stringent Russian discharge requirements. The excess sludge will be treated with a Drum Filter (NDF) and Screw Press (NSP). About the botanical garden solution A botanical garden is a highly creative approach to wastewater treatment. The garden facility utilizes active biofilms on natural(plant) and/or engineered root structures (biomodules), all in a fully-enclosed, odorless facility. The result is a solution which offers a significantly reduced physical footprint and lower operational and infrastructure costs when compared to conventional solutions.
The biological reactors are arranged in a cascade configuration, each with specially designed biomodules, in order to optimize the development of distinct ecosystems in each step of the treatment process. As a result of the cascade design, the composition of the ecosystem fixed in the biofilm, changes from reactor to reactor, adapting itself to the decreasing nutrient concentrations, and thus maximizing the decomposition of contaminants. A compact, odorless and garden-like facility Generally, when people think of wastewater treatment, they envisage large concrete buildings located far from population centers, withbig open basins emitting foul odors. The botanical garden flips this idea upside-down, offering customers a compact, odorless, garden-like facility which produces a highquality, reusable, effluent. The attractive look and feel of the botanical garden solution further enhances this, as the facility can be used not just as a WWTP but also as a scientific, educational, and recreational space for the community. This provides a botanical garden solution utility far beyond just efficient wastewater treatment enabling it to be located virtually anywhere, which is why it was chosen for this critical project. Nijhuis Industries NEWS I www.nijhuisindustries.com
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Seamless integration of a WWTP in an urban area The new botanical wastewater treatment plant, with odorless operation and beautiful flora and fauna, is situated in a glass house and ensures the seamless integration of the treatment facility in the urban area within the shopping center complex and even, includes a botanical garden visitors’ center.
AECOMIXTM-TAURUS digester turns waste into profit Safi Sana Ghana Ltd. Company is expanding its faecal sludge treatment facilities in Accra by processing additional waste streams such as solid waste from the Ashaiman marketplace and the Accra abattoir. This enables Safi Sana to generate more energy that can be supplied to the national grid. For this the company completed a large AECOMIXTM-TAURUS digester and cogeneration plant supplied by Nijhuis. The social enterprise runs a simple model that sees it collect faecal substance and solid waste, pass them through it’s factory machines to manufacture organic fertilizer for agricultural purposes, and energy to sustain the national electricity grid. More megawatts “We have a large anaerobic digester”, explained Country manager Raymond Ategbi Okrofu at Safi Sana Ghana, “which is designed to digest all the different strings of waste so it goes through the process of fermentation and the gas is produced, and we direct the gas to power a generator. Presently we are producing almost 1.6 megawatt on a daily basis; but there is the capability to do more if we have clean waste and we enlarge the size of the digester.”
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Water reuse To complete the circular system Safi Sana reuses the water that is collected from the digester drying beds. This water is used as irrigation water – free of pathogens, full of nutrients - to grow vegetable seedlings in its own greenhouse. The home grown organic fertilizer is used to stimulate the growth. The type of seedlings are selected in close consultation with local farmers and market queens.
Singapore - Netherlands Collaboration on resource recovery solutions for circular economy On 15 December, Jaya Ratnam, Ambassador of Singapore, and Henk Snoeken, Deputy Director of International Affairs of the Ministry of Infrastructure and Water Management and thirteen partners signed a covenant, creating the PIB Cluster ReCirc Singapore. This covenant connects the partners in the exploration and realization of circular solutions in the field of sludge and waste processing and resource recovery solutions, both in Singapore and the Netherlands. ReCirc Singapore is an initiative of Witteveen+Bos, Waternet, TU Delft and the Amsterdam Institute for Advanced Metropolitan Solutions. Area Sales Director Erwin Rietman signed the covenant on behalf of Nijhuis Industries.
Aims of the covenant This cooperation is based upon the similarities between Singapore and the Netherlands: both countries have limited natural resources, limited land space, are densely built, and are facing an ageing population which puts pressure on productivity. Public-Private Partnership (PPP) of RvO.nl ReCirc Singapore is built as a Public-Private Partnership (PPP) of RvO.nl: a coalition between business, government, civil society organizations and knowledge institutions. It is an alliance of knowledge, know-how and business.
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Nijhuis has been awarded the supply of a turnkey GENIUS installation to treat 100.000 (approx. 60-80 farmers) tons of manure at Groot Zevert Vergisting in the Netherlands. Currently, Nijhuis is fabricating a special DAF solution, which is part of the complete GENIUS installation. The first phase of the GENIUS solution will be operational during summer 2018. Green Mineral Mining Center GENIUS at Groot Zevert is a real ‘Green Mineral Mining Center’ and produces 10-20% in volume of phosphate rich solid fraction with 3-6% of phosphate, 5-10% in volume of a 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. The clean water will 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. Nijhuis GENIUS is consisting of a combination of smart technologies such as a digester (Nijhuis AECOMIXTM-TAURUS), a GEA decanter, flotation technology (Nijhuis DAF), nitrogen stripper (Nijhuis AECO-NAR) and a membrane filtration plant. Depending on the clients and regulatory requirements the required combination of technologies are selected to secure the lowest possible CAPEX and OPEX maximizing the sustainable PROFIT.
Sustainable process At Groot Zevert, GENIUS is a sustainable process because no by products and no waste products will be produced. It is an energy positive solution in combination with digestion and reduces the CO2 footprint due to lower production of chemical fertilizers and reduction in manure or digestate transport. The produced organic rich phosphate fraction, liquid nitrogen fertilizer and the liquid potassium fertilizer can reduce the import of artificial fertilizers for pasture land or arable crops and can reduce the export of surplus manure. The volume of manure or digestate will be reduced by 60-80%, because this will be discharged as clean water. GENIUS is an integrated solution maximizing the value of manure which is a true example of the circular economy. Nijhuis GENIUS has already received the ‘Jan Terlouw innovatie prijs’ and the ‘Achterhoek Innovatie Prijs’ and was nominated for the Aquatech Innovation Award 2017 for the category ‘wastewater treatment’.
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First phase of the Nijhuis GENIUS full-scale installation
| OIL, GAS & MINING
Port Said, the Suez Canal and the Mediterranean Sea Engineering of one of the largest industrial and oil WWTP in the world under way
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Nijhuis Industries is currently engineering a turnkey wastewater treatment and power plant for Green Valley Oil Services in Port Said, an Industrial Zone in Egypt. The capacity of the plant will be 60.000 m3/day (equal to 4 million PE) and will be delivered in two phases. Phase 1 will treat 35.000 m3/day and another 25.000 m3/day of industrial wastewater will be treated after the second phase, which is expected to be in operation by 2019.
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The plant consists of Nijhuis proven technologies for the physical-chemical, aerobic and anaerobic biological treatment, active sludge and tertiary treatment, to meet the strict effluent requirements, and will also recover as much as possible biogas and energy from the effluent. Based on the current composition of the wastewater collected from over 250 companies in the industrial zone the plant is designed to be self-sufficient on its energy demand, but will also sell excess power to the grid, a true example of turning the cost for wastewater into profit! Mr. Ahmed Ramadan, Chairman and CEO of the Green Valley Oil Services Group explains “After successfully cooperating with Nijhuis Industries on some of our existing wastewater treatment facilities in Egypt, we approached them because of their extensive experience in difficult to treat industrial wastewater, their flexibility and focus on project delivery, operations & maintenance and customer satisfaction. This project marks the new policy of the Egyptian Government to work in public private partnership with industry together to provide a clean and safe environment for the people living in Port Said, the Suez Channel and Mediterranean Sea, avoid environmental pollution, save water and build resilience to the impact of climate change. The fifteen-year BOT contract to operate this wastewater treatment facility is of very big importance to the GVOS Group and builds on our reputation to deliver reliable solutions for environmental challenges.”
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The largest order since the company was founded Mr. Menno M. Holterman, CEO of Nijhuis Industries, continues “For Nijhuis it’s the largest order since the company was founded in 1904, integrating almost all Nijhuis technologies into the most state-of-the-art wastewater treatment facility in Egypt, the Middle East and Africa region with a capacity comparable to treat wastewater of 4 million PE. Furthermore, it also supports our successful waste-to-value strategy offering turnkey solutions to address the ever-growing demand for larger and more complicated wastewater treatment in emerging countries like Egypt. Besides being awarded this prestigious first project the exclusive partnership between Nijhuis Industries and the client combines the strength of both companies to offer BOT solutions to industrial zones and oil & gas operations in Egypt, the Middle East and Africa during the years to come. Together, we will first however focus on delivering one of the ten largest industrial wastewater treatment plants in the world in a record period of time.”
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BECOME A TRUE
(WASTE)WATER
HERO! VACANCIES WORLDWIDE: R&D Technologist | Service Support Engineer/Planner | Civil Engineer Lead Mechanical Engineer | (Sr.) Process Engineer | Calculator Turnkey Project Design Engineer | Regional Sales Manager | Service Engineer
Take a look on our website and see our latest vacancies and internships:
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Gastight flotation units installed at a refinery plant in Western-Europe Nijhuis successfully installed gas tight flotation units to a refinery in Western-Europe, which is one of the most complex refineries in the world. Nijhuis was awarded the engineering contract for the pre-treatment plant in March 2016 and the start-up and commissioning is currently in progress. Oil & gas wastewater expertise The client commented that one of the drivers to choose Nijhuis is our unparalleled application knowledge and expertise in the oil & gas industry and our in-house portfolio and added value services to design and realize this large-scale pre-treatment solution. The new plant has the capacity to treat all the water coming from the refinery.
Nijhuis acted as a total technology package supplier, responsible for the design and the turn-key realization of the wastewater pre-treatment plant to meet all requirements with regard to environment, health & safety and oil & gas standards. Gastight units with zero air pollution After the existing API separators, the water is collected into a balance tank which will flow into the three Nijhuis Dissolved Nitrogen Flotations (DNF) with a capacity of 325 m³/hr. The DNF’s are gastight, using nitrogen instead of air, to flotate and to blanket the scraper system, creating a safe environment inside the DNF’s to operate this state of the art pre-treatment solution.
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Nijhuis to deliver a new WWTP to refinery in Northern Europe In September 2016, Nijhuis was awarded the contract to deliver a complete wastewater treatment plant (WWTP) solution for a prestigious client at a refinery for crude oil in North-Europe. The new WWTP has the capacity to treat 24,000 m3 wastewater per day. Nijhuis acts as a total technology package supplier, responsible for the basic and detailed design of the WWTP.
Nijhuis will apply smart analyzers and intelligent monitoring (Nijhuis i-MONITORING) to enable operational flexibility and minimize energy consumption. The two-street configuration will ensure reliable water treatment during maintenance activities and influent peaks. The clarifiers are also equipped with an i-DOSE system to control sludge levels, ensuring clean water quality at all times.
The WWTP consists of an intelligent pre-treatment, aerobic/anoxic and clarification system with unique Nijhuis features. The ATEX zone 1 classified pre-treatment system consists of a real-time intelligent dosing technology to minimize chemical consumption and to reduce operational costs.
Additionally, Nijhuis will integrate the i-DOSE and DAF compressors in two 40ft pre-fabricated modular systems. The WWTP will operate with a minimum climate temperature of - 40°C and ATEX zone 1 conditions. The commissioning of the wastewater treatment plant is scheduled for 2019.
Sustainable water use The project is another step forward for the client striving to achieve efficient and constantly monitored water usage. The new WWTP will treat approximately 24,000 m3 rain and process wastewater per day. After the existing API separators, the water is collected into a balance tank which will flow into a two-street physical-chemical treatment process (Nijhuis DAF). The chemical dosing will be optimized by an intelligent real-time Nijhuis i-DOSE system. The secondary treatment contains a two-street Nijhuis BIOCTOR-CONTINUOUS aerobic/anoxic system with clarifiers. Nijhuis Industries NEWS I www.nijhuisindustries.com
Integration of cooling water disinfection solution for Mars Petcare in Poland During the summer of 2017, Nijhuis completed the installation of an ozone cooling water disinfection solution for Mars Petcare. The ozone is injected in the water flow directly in the cold-water basin by an injection pump. The ozone is mixed with water by means of an especially designed Nijhuis venturi injection and static mixer into the flow and in the cold water basin by jet blowers.
Micropollutants often enter the environment through municipal and industrial wastewater, as most treatment facilities are currently not equipped with a fourth cleaning stage, e.g. ozone or activated carbon. Boehringer Ingelheim Pharma GmbH in Biberach an der Riß has started a research project in cooperation with the Ingenieurbüro Dr. Jedele, reducing micropollutants to the environment. Over a period of 1.5 years, they will investigate ways in which micropollutants oxides with ozone and is adsorbed with activated granulated carbon. The project is financed by the State of Baden-Württemberg. Nijhuis commissioned a modular ozone system for 100g O3/h, which was installed by the customer in a container.
Sustainable disinfection of cooling water without chemicals To prevent bacteria growth and legionella outbreaks in cooling towers, chemicals can be added to disinfect cooling water but these are 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, chemical free, safer, and the blowdown water quantity is reduced”, said maintenance manager Perry Janssen from Radboudumc. Six Nijhuis ozone installations The cooling water will be used for, for example, at their 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 the system is inspected every week.
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In case the conditions of sufficient ozone production and sufficient flow and mixing are fulfilled, the total number of micro-organisms will remain below 1000 CFU/ml and both E. coli / Coliforms and Legionella level at 37 °C will remain non-detectable. The analysis unit contains a Redox value, pH, temperature and conductivity measurements. The ozone system is 24/7 monitored at the Nijhuis headquarters and quarterly inspected by the Nijhuis Industries Central Europe service organization in Poland.
Elimination of micropollutants with ozone
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