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A water treatment solution consists of several treatment steps, e.g. filtration, softening, and demineralization - all controlled from a central control cabinet. These units must be put together on site.  

If the end-user or the contractor is uncertain if the installation can be carried out locally within the determined economic and temporal scopes, it can be an advantage to order a water treatment plant (container or frame-mounted) which is ready for use when supplied.

The solution is complete with all internal piping and wiring factory-built. The whole plant has been performance and pressure tested in our factory. This safety can be achieved with a EUROWATER frame-mounted plant or a container-installed plant. 

We have constructed many different custom-made plants adapted to specific demands and wishes. Below, you can see different examples of this. We are happy to make quotations for start-up of plants and training of the operating crew.

Plug-and-play water treatment plant for biomass steam boiler

The water treatment plant is designed for producing 2 x 3.25 m³/h ultrapure water as make-up water for high-pressure steam boiler. The WTP-F from EUROWATER consists of: water pre-heater, duplex softener, 2 x RO, 2 x EDI, central plc control cabinet including online hardness measurement, conductivity measurement, and flow measurement.

Frame-mounted water treatment plant for turbine water

This complete water treatment plant is made for a 90 MW power plant in Africa. The plant is designed for producing 

• 1.5 m³/h ultra pure water for turbine
• 7.5 m³/h demineralised cooling water
• 2.0 m³/h water for fire fighting etc.

The skid comprises the following water treatment plants: Filtration, activated carbon filter, UV-disinfection, dosing of antiscalant, mechanical filtration, double-pass reverse osmosis, EDI (electrodeionization unit). Everything is controlled by a central PLC with touch screen.

Frame-mounted scavenger and demineralization plants

Due to the fact that it is expensive and sometimes difficult to carry out installations and assembly in the offshore industry, it is sensible to do as much of the assembly and testing off-site as possible.   

The shown plant is mounted on an epoxy-coated, construction iron skid with drip tray.

The plant is designed for 9 m³/h and consists of filter bags for removal of mechanical impurities, scavenger plant for removal of organic, suspended matter, demineralization plant, plant for neutralization of regeneration chemicals, and a central electric control cabinet.

Our new series of compact units type CU:RO consists of complete reverse osmosis system together with pretreatment on the same stainless steel skid – ready for use. The concept brings you the following advantages:

• pre-determined system with a range of standard options for pretreatment; makes purchase and design straightforward
• factory-tested as a whole; leaving you with minimum risk of errors
• frame mounting; makes a secure and quick installation
• compact design with minimum footprint

The series includes 5 different sizes with standard output of demineralized water from 0.4 to 2.0 m³/h - each available with three options for pretreatment.

Proper pretreatment of the feedwater to an RO system is an essential factor for unproblematic, long-term operation. Clogging of the membranes by suspended solids, scale-forming minerals, and other impurities have to be prevented by appropriate measures. Hardness minerals can be removed in a softener, suspended solids in a mechanical filter, while free chlorine can be removed in an activated carbon filter.

You can select between the following pretreatment options:

• 1-tank softening plant
• 2-tank softening plant, parallel operation
• 2-tank plant with combined filling for softening and removal of free chlorine, parallel operation

Moreover, all units are equipped with a special mechanical filter (strainer) which is reliable and easy-to-maintain. A backflow preventer to separate the unit from the public water system is also standard on all units.

Control panel SE30

A EUROWATER designed control system integrating an operator panel and a programmable logic controller PLC is accessible on the front side of the unit together with flow meters and manometers.

The control panel offers a user-friendly HMI environment. The panel has a large, illuminated display for optimum operator control and monitoring. The menu structure is standardized and available in several languages for easy and quick access to operating data and parameter settings. User-friendly keys on the panel front make interface possible without violating the IP54 protection class. 

Options:

• Control cabinet for power supply with main switch and motor protection for RO pump
• Conductivity measurements with temperature compensation and output signal 4-20 mA

Reverse osmosis units are used for production of demineralized water without use of hydrochloric acid and sodium hydroxide. Among other things, the units are used in boiler houses, district heating plants, hospitals, dialysis centres, and laboratories, for process water in the pharmaceutical industry and the chemical industry, as well as in connection with humidification plants. RO units remove pyrogenics as well as bacteria and cause no wastewater problems. The units remove up to 90% of the organic substances and retain 98-99% of the salt in the water.

Advantages

Storage and handling of acid and lye are avoided. The units are extremely space-saving thanks to the compact design. The plants are of high quality, need minimum maintenance, and the reliability of operation is very high.

Unit description

Flow rates for standard modules: 50 l/h - 60 m³/h. RO plants are either produced as standard modules or custom-made according to requirements. The units comprise selected components of high quality. They are automatic with electronic quality monitoring.

Custom-made plants

There are many possibilities of custom-made solutions. Nearly all parametres and components can be varied and combined. EUROWATER has great experience in producing RO pipe systems in many types of materials such as PP, PE, PVDF, and stainless steel. The foundation and frame, too, can be delivered in stainless steel.

Nanofiltration is often used for treatment of drinking water and industrial process water.

Drinking water

• Reduction of sulphate, chloride, and fluoride
• Partial softening without use of regeneration chemicals

Industrial process water

Partial softening and reduction of colour and humus from surface water in e.g. the iron and metal industry and paper mills.

Nanofiltration or reverse osmosis?

Reverse osmosis is typically used for demineralization of water, since this filtration method covers the widest field of application (see the diagram). Nanofiltration, on the other hand, is applied in order to reduce unwanted components in full or in part. Unlike reverse osmosis, nanofiltration applies a lower pressure, typically under seven bar, resulting in lower energy consumption compared with a reverse osmosis plant with the same productivity.

You must also choose a nanofiltration plant over a reverse osmosis plant if you want a certain hardness, because a potential demineralization will make the water aggressive and lead to problems with corrosion in the supply network. 

Designed for your needs

EUROWATER offers a broad product range of fully automatic nanofiltration units – based on our well-known modular standard system, which makes it possible for us to combine an optimal plant for your needs.  

The technique behind

Nanofiltration is a membrane technology, which in its mode of operation and construction is very similar to reverse osmosis. A nanofiltration membrane primarily restrains divalent ions and larger molecules. When it comes to the filtration process, a nanofiltration unit is placed between reverse osmosis and ultrafiltration – see the diagram.

An EDI plant is used after RO for polishing of demineralized water to obtain low levels of conductivity and silica. EDI is an alternative to a conventional mixed-bed polisher.

Plant description

Flow rates up to 60 m³/h. EDI plants are either produced as standard modules or custom-made according to requirements.

Advantages

• EDI is a continuous process and utilizes chemical-free regeneration. Therefore, regeneration downtime is eliminated and storage and handling of acid and lye are avoided. The plants are space-saving on account of the very compact design. The plants are of high quality, need minimum maintenance, and the reliability of operation is very high.
• EDI plant with a capacity of 60 m³/h totally demineralized water with a very low conductivity and silica acid content for producing boiler water for high pressure steam turbine.
• The pipe system for the treated water is made in PP (Polypropylene) connected by welding and each takes app. 15-20 minutes to make. In total, 570 weldings have been made for this plant. Each EDI cell is fitted with own test cock.

Plants of this type produce demineralized water by means of ion exchange technology.

Among other things, they are used in hospitals and laboratories as well as in the production of process water, water for steam boilers and high-pressure hot water boilers, and cooling water.

Advantages

The plants are of packaged modular design which gives competitive prices. EUROWATER's standard range of products covers most requirements. The plants have a simple structure, are easy to operate, and the design is corrosion-resistant and compact. Frame-mounted plants are easy and quick to install.

Plant description

Demineralization plants are produced as automatic, two-tank plants (co-currently and countercurrently regenerated) and mixed-bed plants in which the regeneration either takes place on site or on the basis of service. Mixed-bed is frequently used where stringent requirements for low contents of salt and silica apply. 

Plants for treatment of certain types of metalliferous wastewater. This type of plant is used in industries where the residue of heavy metals is too large to fulfil the authorities’ requirements for wastewater disposal. Selective ion exchange is a supplement to a conventional treatment plant.

Plant description

Selective ion exchange plant, type SEL-FNS, is produced in five standard modules - all with automatic regeneration.

Most often, dosing is used for pH-adjustment of boiler water, cooling water, and district heating water as well as for protection against corrosion and precipitation. In connection with other water treatment, dosing pumps are typically used for admixture of disinfectants, flocculants, and scale inhibitors.

Advantages

The dosing pumps of the standard program are carefully selected with a view to offering complete water treatment solutions of high quality. Reliability of operation and precision are central parameters.

Plant description

In many cases, dosing forms a natural part of the complete water treatment plant. EUROWATER markets various types of dosing pumps to cover as many needs as possible. A complete dosing plant comprises dosing pump and tank for additive.

Design, supply and installation of watertreatment heating and distrubution of hot water +90/+130C for industrial enterprises with individual project

Membrane Degassing Units (MDUs) provide efficient, compact and maintenance-free technology for removing carbon dioxide and oxygen from water without any chemical treatment.

In many industries where high quality water is needed - such as make-up water for boilers, power plants, pharmaceuticals - membrane degassers are becoming standard technology for removing CO2 and O2 from water.

For example, carbon dioxide removal can reduce the effects of corrosion in boilers and pipes in order to save investment, extend equipment life and reduce operating costs. The removal of these gases can also increase the efficiency of the process, for example, for the operation of the EDI system.

Main advantages for choosing membrane degassing modules:

• Chemical independence
• Compactness
• Low installation costs
• Modular design with high flexibility to ensure future potential or stringent requirements, even after initial installation.

EUROWATER offers membrane degassing modules as standard kits, and customized solutions are also possible.

Deaerators are used for reducing the content of oxygen, carbonic acid, and air in the water, for treatment of make-up water for steam boilers and district heating centrals, and for deaeration and deoxidization of circulating water. 

Advantages

Reduction of oxygen and CO₂ minimize the risk of corrosion. All deaerators are produced in materials which ensure a long life, high operational reliability, and a minimum of maintenance of your plant.

Plant description

EUROWATER produces several types of deaerators:

• Thermal deaerators Thermal deaerators ere used for pretreatment of feedwater for steam boilers. The oxygen content is reduced to very low values. Can be insulated with mineral wool and covered with aluminium plates. The plant is constructed according to the EU pressure tanks directive of 29 May 1997 (97/23/EF) (PED) and is delivered approved with CE marking.
• Vacuum deaerators Are used for treatment of make-up water and circulating water in heating centrals. The oxygen content is reduced to less than 0.1 mg/l. Possibility of construction in electroplated and stainless steel. 
• CO₂ degassers Are used in connection with dealkalizers or UPCORE demineralization plants.
• Membrane degassers Removal of CO₂ and O_2. Used in connection with RO units, mixed-bed units and EDI units. Read more about membrane degassing units

The module is designed to dissolve salt and to dose brine into DONI®Plastformer or DONI®Tank L A perforated basket is loaded with salt and the salt is dissolved through internal circulation. The built in conductivity sensor, that controls concentration, signals for ready brine to be fed in doses into DONI®Plastformer or DONI®Tank L .

The module requires CIP-cleaning.

The module is designed to dissolve salt and to dose brine into DONI®Plastformer or DONI®Tank L A perforated basket is loaded with salt and the salt is dissolved through internal circulation. The built in conductivity sensor, that controls concentration, signals for ready brine to be fed in doses into DONI®Plastformer or DONI®Tank L .

The module requires CIP-cleaning.

The module is designed for the brining of curd in the manufacturing of cheese with grainy structure. Inhibiting action on the development of the microflora is not observed during the preliminary brining (salt content of 0.5% to 0.7%). Meanwhile the time spent in the brine baths is significantly reduced, which accelerates the brining process and reduces the quantity and the volume in the brine baths.
Thanks to DONI®Drain/Brine the practice of partial brining in the cheese vat which generates up to 60% of salty whey is avoided. The process of whey desalting is very complex. DONI®Drain/Brine consists of two draining drums, connected with a U-tube where the curd stays in brine to absorb the necessary quantity of salt. The whey is drained in the first drum and the brine is drained in the second one.
The salt concentration in the brine is maintained automatically. Before the beginning of the process it is pasteurised and cooled down to 40°С.

The module is designed for CIP cleaning.