Water Treatment Units

To avoid expensive and time-consuming investments, we offer containerized units for different wastewater treatment processes (screening, chemical dosing, flotation, etc). Each unit is engineered for a specific process, ready to plug and play. The units can be combined into a tailored wastewater treatment solution. The system comes with full process automation required for reliable and safe operation. Integrated online monitoring keeps you up-to-date about process operation at any time and any place.

Processes & Technologies

Water treatment nearly always requires a multi-step process combining several unit operations. We apply the best available techniques and find the most feasible combination to each case. Such techniques typically include chemical treatment like pH control, coagulation and flocculation; flotation, settling or other solid-liquid separation processes like filtration; aeration or advanced oxidation etc. Roxia also develops completely new technologies for water treatment. As our water treatment flag ship, check out the world’s first direct plasma oxidation system: Roxia Plasma Oxidizer

Studies of the wastewater are done by Roxia experts with a variety of technologies and processes.

Circular Economy: Reuse Waters

Circular Economy: Reuse Waters

Once treated appropriately, industrial waters can be reused onsite. Such opportunities are easily overlooked and require careful learning of the plant operation and the processes where water is used. Roxia experts can review these opportunities and help customers reduce the amount of spent and discharged waters.

Inlet unit for wastewater treatment. Roxia offers tailored wastewater treatment solutions.

Inlet Unit

  • Transfer pumping
  • Screening
  • Other optional pre-treatment
Roxia Chemical Dosing Unit. Dosing and mixing systems, polymer preparation. quality and volume monitoring,

Chemical Dosing Unit

  • Dosing and mixing systems
  • Polymer preparation
  • Quality and volume monitoring
Roxia flotation unit ready to plug and play. Nano- and microbubble generation, dissolved air flotation, mechanical separation.

Flotation Unit

  • Nano- and microbubble generation
  • Dissolved air flotation
  • Mechanical separation
Roxia Dewatering Unit. Sludge dewatering, solids collection in a geotextile bag, roll-off container for transportation.

Dewatering Unit

  • Sludge dewatering
  • Solids collection in a geotextile bag
  • Roll-off container for transportation
Roxia Filtration Unit ready to plug and play. High-performance pressure filtration, sludge drying, filtrate polishing.

Filtration Unit

  • High-performance pressure filtration
  • Sludge drying
  • Filtrate polishing
Piloting Roxia Plasma Oxidizer. Our water treatment flagship, the world’s first direct plasma oxidation system.

Oxidation Unit

  • Advanced oxidation process
  • Direct non-thermal plasma treatment
  • Odour, colour, VOCs and COD removal

Want to know more?

Fill in the contact form and Roxia wastewater treatment professionals will advise you.

Technical data

Chemical Dosing Unit

Flowrate 5 – 240 m3/h
Container type Sea container
Dimensions L: 6070 mm, W: 2440 mm
H: 2570 mm
Transportation weight 5 500 kg
Operating mass 8 000 kg
Automation and control panel Allen Bradley or ABB
Pipe reactor PE
Chemical pump 1 Max 45 l/h *
Chemical pump 2 Max 45 l/h *
Polymer preparation unit Max 600 l/h
Polymer pump Max 600 l/h
Power Supply 32 A
Inlet connection Flange DN150 EN1092-1
Outlet connection Flange DN150 EN1092-1
Water pH 1 – 9
Water temperature 5 – 30 oC
Ambient temperature -20 – 30 oC
Made in Finland
CE Yes


* Options available, contact us.

Dewatering Unit

Capacity 0 – 15 m3/h
Container type Roll-off
Filter bag volume Approx. 20,7 m3
Dimensions L: 6516 mm, W: 2594 mm
H: 4628 mm (with lid open)
Transport connection Hydraulic hooklift system according to DIN 30722
Transportation weight 4 500 kg
Operating mass 25 000 kg
Container material Steel, paint coating
Geobag material PP
Characteristic opening size O90 ~400 µm
Filtration grid material Steel, zinc coating
Sludge inlet Up to 7”, twin port, clamp connection
Water outlet Ball valve A316, R2 ½” female thread
Power supply (for heating) 16 A
Water pH 5 – 9
Water temperature 1 – 65 oC
Ambient temperature -20 – 30 oC


* Options available, contact us.

Flotation Unit

Capacity 5 – 100 m3/h
Container type Sea container
Motor L: 6060 mm, W: 2440 mm, H: 2700 mm
Transportation weight 5 500 kg
Operating mass 25 000 kg
Automation and control panel Allen Bradley or ABB
Pipe material PE
Pool material PE
Lamella material PP
Power Supply 63 A, 32 A
Inlet connection Flange DN100 EN1092-1
Outlet connection Flange DN150 EN1092-1
Water pH 1 – 9
Water temperature 5 – 30 oC
Ambient temperature -20 – 30 oC
Made in Finland
CE yes


* Options available, contact us.

Do you need technical data for Inlet, Filtration or Oxidation units?

Contact our environmental experts and they will assist you.

Let’s talk and find the best solution for your business!

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  • Select field

Contact us

If you have something on your mind, just let us know! We are more than happy to answer all your inquiries.


Ettienne Joubert

Sales Engineer South Africa

+27 (0) 81 030 1015

Lyle Henson

Environmental Technologies Sales Manager North America

+1 443 695 9510

Ronald Gaspar

Technical Service Manager Peru, Colombia

+51 9 7973 5424

Maureen Briceño

Sales Manager Chile, Brazil

+56 2 3224 9704

Jesse Saira

Area Sales Manager Nordic and Baltic Countries

+358 44 276 2338

Dirk Otto

Sales Director Central Europe

+49 (0) 2102 420 707

Victor Ortega

Area Sales Manager Asia Pacific

+61 499 156 590

Juho Uusitalo

Area Sales Manager Eastern Europe

+358 40 680 4396

Eduardo Paredes

Sales Director South America

+56 994 991 561

Fernando Henriquez

Sales Director Peru