chemical free water treatment - nijhuis industries · pdf fileozone industries cooling water...

REVISION 1.1 - MARCH 2017

CHEMICAL FREE WATER TREATMENT

Nijhuis Ozone Solutions is part of the Nijhuis Industries group and delivers ‘solid solutions in a fluid world’ as a response towards a greener economy. Nijhuis is aiming to turn cost centers into profit centers with solutions for sustainable water use and resource recovery.

To accommodate the customer requirements, Nijhuis offers customized installations to meet today’s challenges, as well those of the future, across a wide range of industries and municipalities in today’s ‘fluid’ world.

Nijhuis Ozone Solutions is an expert in chemical free water treatment, providing water treatment solutions to eliminate bacteria, biofilm, viruses, hormones, pesticides and pharmaceuticals and recalcitrant COD. The company, located in the Netherlands, has 25 years of experience in disinfection and water reuse.

Our range of innovative ozone technologies can be applied to cooling water systems, potable water treatment, wastewater treatment or process water flows in the food and beverage industry.

Another innovative Nijhuis Ozone Solutions product is the ATC range. The Nijhuis Automatic Tube Cleaning system provides a permanent solution to combat scaling and fouling problems by reducing power consumption, minimizing shut downs and maintenance costs.

WHY NIJHUIS OZONE SOLUTIONS?• Chemical free solution.• Guaranteed prevention of legionella & biofouling.• Guaranteed prevention of corrosion & scaling.• Maximal water savings & no additional discharge cost.• Safe & sustainable cradle 2 cradle technology.• Water Management: Installations & rentals, remote 24/7 control,

onsite support, water treatment consultancy and sampling.

Nijhuis Ozone Solutions B.V. Innovatieweg 4, 7007 CD, Doetinchem Office number: +31 (0)314-749 000Service: +31 (0)314-749 059Email: [email protected]

OZONE SOLUTIONS

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Nijhuis Industries I www.nijhuisindustries.com

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CHEMICAL FREE DISINFECTION

APPLICATIONS• Reuse of process water. • Chemical free disinfection of wastewater eliminating bacteria like

E.coli, Salmonella, yeasts, fungi and legionella. • Elimination and prevention of biofilm in cooling towers.• Decompose toxic components like pharmaceuticals, pesticides and

hormones in water. • Decoloring of water.• Odour control.

Typical set-up of a Nijhuis ozone system


Ozone gas (O3) is a powerful oxidizer and disinfectant. Its oxidation

potential is 150% higher compared to chlorine products. Ozone is a natural gas that oxidizes approximately 600 to 3000 times faster than any other chemical product. Ozone does not only eliminate bacteria, but also viruses and other microbiological organisms, leaving nothing but oxygen (O

2),

and water after the disinfection process. Due to its oxidation mechanism, microbiological organisms cannot become resistant to ozone.

Ozone has the additional advantage that hazardous biocides or chemicals are no longer required in the process. Ozone regenerates into harmless oxygen which leaves no chemical residues in the process water making it possible to recycle the water multiple times.

OZONE INDUSTRIES

COOLING WATER DISINFECTIONOpen cooling tower systems and heat exchangers recycle water for heat exchanging and are susceptible to pollution. This is caused by bio fouling, scaling and corrosion which all can bring the system to a hold. In addition to this, the system is also in danger of legionella outbreaks which are harmful and fatal for human beings. The application of ozone in combination with the integrated water management program, guarantees a continuous disinfected water system that is safe, sustainable, energy efficient and chemical free.

FOOD AND BEVERAGE INDUSTRYProcess water used for pasteurization or sterilization need to be free of any bacterial activity at any time to guarantee food safety. The presence of heated water and product spills in process water is an ideal environment for bacterial growth. Ozone eliminates bacteria and has the additional advantage that hazardous (not food safe) biocides or chemicals are no longer required in the process. Ozone regenerates to harmless natural oxygen and leaves no chemical residues in the process water.

SWIMMING POOL WATER DISINFECTIONSanitizing swimming pools and spas with ozone provides the following benefits:• Breaking down organics like fats, proteins, cosmetics remainders, urine and urea. • Eliminating bacteria in the water, also containing chlorine-resistant germs.• Deactivating viruses and de-coloring the water.• No irritation to eyes or respiratory tract.

WASTE & PROCESS WATER TREATMENTNijhuis proprietary ozone technology is a sustainable method to produce environmentally safe and disposable wastewater to remove chemical and biological contaminants. Treated effluent can be disposed to surface water (no environmentally harmful residue), or e.g. reused for cleaning in place.

RENTAL SOLUTIONSWater challenges need fast response solutions. Nijhuis modular ozone rental solutions secures a minimal footprint and can be easily relocated or extended thanks to their modular design. Nijhuis is able to offer a rapid and technically proficient disinfectant solution via ozone technology leaving no chemical residues and guaranteeing food safety. The robust and reliable systems can be monitored remotely to require minimal site attendance. The ‘plug and play’ principle provides the customer with a quick and sustainable solution.

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CLEAN IN PLACE BY REUSING CONDENSATE WATER

Producers of milk powder treat their condensate water normally as wastewater. Besides the environmental impact, this flow creates unnecessary costs because of the freshwater usage as well as the water discharge costs. By disinfection this flow can be reused as CIP water resulting into a green and sustainable solution.

Challenge Disinfecting condensate water can be used to clean in place. As water streams in the dairy industry typically are high on pH, conventional chemical disinfectants like hypochlorite are not applicable. An alternative chemical disinfectant like chlorine dioxide would result in high consumption cost and a complex make-up system. The use of chemicals requires handling and storage, therefore leading to hazardous situations.

The Smart Solution: ozone treatment disinfectionOzone (O

3) disinfects the water and prevents the formation of bacteria like E.coli and legionella

without any chemical addition which will lower the operational costs. The advantages of using ozone technology instead of chemical methods are:

• Guaranteed bacteria free, disinfected water. • No danger of chemical residues in the CIP water • Ozone (O

3) will regenerate to oxygen (O

2), harmless oxygen is the residue.

• No chemical handling or chemical safety issues. • Sustainable, environmentally friendly technology (ambient air and electricity are used as raw

materials).• Working range is independent on pH level.• Pollutans are decomposed by ozone.

Typical set-up of reusing condensate water


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INTEGRATED WATER MANAGEMENT PROGRAM

The Nijhuis Integrated Water Management Program ensures the lowest water footprint as well as the most optimal water quality. The water management program is a custom build service and consists of a 24/7 remote monitoring program and helpdesk, onsite inspection, maintenance support, analyses and reporting consults how to operate installations at the lowest possible total cost of ownership.

The NI Connect module is developed by Nijhuis to guarantee a secure link in between the installation on site and the Nijhuis Control Room to manage the process.

24/7 REMOTE i-MONITORING PROGRAMNijhuis provides a remote 24/7 monitoring of the water treatment installation on site to control and to improve the performance and to decrease operational cost. This program also includes direct action on notifications from the installation as well as troubleshooting by experts.

The performance of the system will be reported frequently to provide a complete overview including trend analyses, sample data and consults by experts.

INSPECTION / ANALYSES SERVICESInspection of any water treatment installation is essential to check whether the system performs optimally and produces in compliance with the legislation. The inspections are frequently carried out by trained Nijhuis service engineers. Inspection activities include amongst others calibration of sensors, check on equipment functionality and status, sampling and analyses of chemical and biological characteristics of the water. The data, the conclusions and advices are summarized in a comprehensive report and archived according to the legislation.

MAINTENANCE SUPPORTNijhuis provides technical maintenance and troubleshooting support on site to guarantee that the customers processes run at maximal efficiency. Nijhuis will test, revise and fine-tune the equipment. Well trained service engineers check all aspects of the process and evaluate the status of the complete installation and all control equipment. In this way the installation will be completely up-to-date to reduce life cycle cost.


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“The perfect tool to manage your installation”


Air conditioning systems and industrial processes use heat exchangers for cooling or heating purposes of their process water or gas. Water based cooling systems suffer from fouling of the tubes of the heat exchangers leading to a reduction in efficiency and increased power consumption, and consequently higher operating cost. Heat exchangers are considered to be one of the largest power consumers in power, food & beverage, chemical, oil & gas and pulp & paper plants. In cases where surface water is used as cooling medium the Nijhuis Automatic Tube Cleaning system is the ultimate solution to keep the installation in optimal condition and at the lowest possible costs.

The efficiency of a heat exchanger will reduce significantly because of fouling and scaling of the heat exchanger tubes. Research indicates that a fouling layer of only 0.6 mm on heat exchanger tubes reduces the heat transfer efficiency by 34% and results in a higher power consumption of 21%. Conventional methods like the dosing of chemicals fail to fulfill sustainability and economical goals. Regular manual cleaning requires shut down of the process for a longer period and immediately after biofouling will start to build up again. The Automatic Tube Cleaning works continuously without interrupting the process.

MAXIMIZE HEAT EXCHANGER PERFORMANCES

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“The perfect solution to keep your heat exchanger in optimal condition”

EXTEND HEAT EXCHANGER LIFETIME

APPLICATION AND WORKING OF THE SYSTEM The Nijhuis Automatic Tube Cleaning system comprises a unique Nijhuis 4 way flow diverter and a Nijhuis cleaning set of one brush and two baskets for each tube of the heat exchanger. The flow diverter is positioned in the piping to and from the heat exchanger. It is custom designed for various piping configurations for ease of installation and a pressure drop lower than 0.2 bar. This unique flow diverter allows for periodic flow reversal through the heat exchanger at pre-set times, without reducing or stopping the flow through the heat exchanger and without taking the heat exchanger out of service or interrupting its operation. When the flow is reversed the brush will move to the other side of the tube by of forced rotating cleaning action.

WHY NIJHUIS AUTOMATIC TUBE CLEANING?The Nijhuis Automatic Tube Cleaning system is a unique technology to help customers meet increasingly demanding sustainability requirements. This technology is a simple, robust, chemical free and environment friendly solution to keep heat exchangers working at full capacity, maximizing effective lifetime with the lowest operational costs.

The Nijhuis Automatic Tube Cleaning system is designed to comply with the specific local aspects such as water flow, water quality, diameter connection of the heat exchanger and the number of tubes. The system is installed as an integral part of the heat exchanger. The Nijhuis Automatic Tube Cleaning system provides a permanent solution to combat scaling and fouling problems by reducing power consumption, minimizing shut downs and maintenance costs. More than 200 customers in various industries worldwide are benefitting from the Nijhuis Automatic Tube Cleaning in their heat exchanger. The ATC is a sustainable solution maximizing heat exchanger performance and extending lifetime whilst maintaining the lowest possible costs.

Before ATC cleaning

After ATC cleaning


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