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PITT GmbH • Poststraße 68 • D-44809 Bochum • Germany • Fon: +49 (0)234 - 932496-24 • Fax: +49 (0)234 - 932496-26 • ImpressumDatenschutz

current information

August 2020

IFO Desulfurization

Due to the current market demand for the desulfurization of marine fuels, the ECO-DESULFOX S-5000/500 was developed.

November 2019

Drinking water systems for Papua New Guinea

As part of an environmental assessment in Madang Province, Papua New Guinea, heavy metals and toxins were discovered in drinking water. PITT GmbH was awarded the contract for planning of special solar-powered drinking water systems.

May 2018

First PITT-TPS in Russia.

First Three Phase Separator in Russia has been installed in a steel mill. The task is to remove both free oils and heavy particles out of process water.

June 2017

We've moved

From the 1st of June 2017 you will find us in the new Technology-Center in Poststraße 68, 44809 Bochum, close to the A40.

June 2016

The new generation of DAF-3.000..30.000 is available.

The advanced technology replaces the series DAF 30..120. Not only the color has changed. The process flow is enhanced by numerous innovations. Inform yourself!

July 2014

Innovative pond water regeneration PITT-REPAIR for sustainable and certified fish farming

Taking into account of GLOBALG.A.P. requirements the new technology PITT-REPAIR (rearing pond air) regenerated rearing ponds for Pangasius and other freshwater fishes. PITT-REPAIR is an effective combination of oxygen injection and pond bottom cleaning. Inform yourself!

July 2013

Foundation of PITT agency in Shanghai

With immediate effect PITT GmbH is represented by FIRST ENVIRONMENT PERFORMANCE GMBH in China. The agency starts with order of large-scale flotation DAF 300/3-C2 for waste water of dyeing industry.

September 2012

New standard procedure for food industry

The new modular technology DAF-SBR, a combination of chemical and biological water treatment, delighting our customers. A meat processing plant and a dairy farm in Romania are equipped with the new technology.

January 2012

New in product range: Flotation plant in modular design

Modular DAF plants with a capacity of 40 to 200 m³ / h are available now. Costs and time for assembly are radically reduced.

February 2011

PITT Newsletter

Find out about our current activities and request the newsletter by e-mail.

August 2010

PITT Agency in Russia.

With immediate effect PITT GmbH is represented by OOO EKOTECH-AQUA. The experts for waste water engineering present the product range of PITT GmbH on the Russian market. Click here for contact details

July 2010

First PITT flotation in Romania.

A unit of our DAF 100-1280-series (30 m²/h) has been installed by our Romanian partner ATB. Waste water from a dye works facility in the automotive industry is analyzed and chemically treated prior discharging into sewer.

January 2010

First AEROS in Ukraine.

The first AEROS in Ukraine has been installed. With our AEROS technology, it is possible to clean and recycle washing water from a manual car wash installation up to 100 per cent.

August 2009

Our PTT DAF-technology “aquaflow” will be marketed worldwide in combination with the proven “Dekanter”, a technology of our partner GEA.

Special leaflets are available on [digestate treatment in biogas plants] and [waste water treatment in refineries].

February 2009

Our high-performance separator TPS is launched.

The innovative 3-phase-separator-technology enables concurrent separation of oil and suspended solids from process water in one passage. [more...]

PITT-DAF - dissolved air flotation!
[Brochure DAF download]
[Brochure "Biogas" download]
[Brochure "Refinery" download]

Innovative DAF technologie for industry and trade


The product

The DAF (dissolved air flotation) technology is a worldwide renowned system employed for the treatment and recycling of industrial and commercial waste water.

The dissolved air flotation process serves for separating the dispersed or suspended substances from the water. The DAF process uses air microbubbles that adhere to the substances and transport them to the water surface. For splitting emulsions chemicals (flocculants, coagulants ...) are added.

The PITT-DAF provides for the following advantages over other DAF technologies:

  • The new AQUAFLOW technology increases the efficiency of the gas bubble spectrum by a multiple. The demand of power is clearly reduced.
  • Due to the turbulence mixing system of AQUAFLOW chemical metering can be done more accurately and economically. The consumption of chemicals is dramatically reduced.
  • The air supply of AQUAFLOW works automatically and requires no electric sensors. This guarantees a nearly maintenance-free operation.
  • Optimum and even flow conditions are achieved thanks to the round form of the central flotation basin.

High quality and long-lasting materials insure a reliable use with low maintenance needs. The modular design provides for a large variety of different applications.


Subassemblies of PITT-DAF

Subassemblies of PITT-DAF


The operation principle

A booster pump pumps the waste water to be treated into the AQUAFLOW where the water is compressed and fed through an atmosphere of compressed air into the mixing chamber.

The AQUAFLOW’s air supply works automatically and requires no electric sensors. The AQUAFLOW ensures a reliable water-air mix and a constant saturation. Undesirable variations in the micro-bubble spectrum are avoided.

Due to the AQUAFLOW turbulence mixing system the chemical reaction time is reduced to a minimum as is the need for splitting chemicals.

The saturated and, if need be, chemically split water flows through the relief valve into the central flotation basin. Using a special, optimised streaming technology the agglomerate formed floats to the water surface.

An adjustable rotating scraper reliably discharges the concentrate out of the basin. The integrated torque regulation allows for minimizing the liquid share in the chemical concentrate and the operating costs.

The treated water flows into the level-controlled clear water basin where it can be reused or drained. Via a very special mechanical device the water level is optimally adjusted to the hydraulic and chemical conditions.


Areas of applications

  • Metal industry
  • Plastic industry
  • Chemical industry
  • Pharmaceutical industry
  • Oil industry
  • Food industry
  • Beverage industry
  • Cosmetic industry
  • Lacquer and paint industry
  • Paper industry
  • Textile industry
  • Building industry
  • Mining industry
  • ...
  • ...
  • ...


Design size

Our standard DAF plants with a hydraulic capacity up to 40 m³/h are made of Polyethylene. Larger plants with a capacity up to 5.000 m³/h are individually designed. Please find out more about our experience in the construction of large scale plants.


DAF in modular design

The new modular design of DAF plants with a capacity of 40 - 200 m³/h allows a quick and cheap assembly. The modules are available in high density polyethylene or stainless steel. The installation usually takes only one day.