Paques I.p.b.v.

Paques B.v.

Paques Water Systems, B.v.

Leonard Hubertus Alphonsus Habets

Ronald Mulder

Sjoerd Hubertus Jozef Vellinga

Jelle Hendrik De Boer

Jacob Cornelis Theodorus Vogelaar

Veronica Henrika Johanna Groot Kormelinck

Sjoerd Hubertus Josef Vellinga

Antonius Johannes Jorna

Antonius Bernardus Vallinga

Remco De Vries

A gas-liquid separation device () for an anaerobic purification device for purification of wastewater, the gas-liquid separation device comprising:

Degassing device for anaerobic purification device

An anaerobic purification device for purification of wastewater, the anaerobic purification device comprising:

Anaerobic purification device with variable water column

The invention relates to an anaerobic purification device for purification of influent. The device has a reactor tank, an inlet for introducing influent into the tank, a water collecting device for collecting purified water, a gas collecting system for collecting gas from the fluid contained in the reactor, a gas-liquid separation device, a riser for passing liquid into the separation device by gas lifting action caused by gas collected in the gas collecting system, and a downer for returning liquid and sludge from the separation device into the lower tank section. According to the invention this device is characterized in that it is arranged to define, in the downer at the level of the liquid surface, a head pressure of, at least, approximately 1.4 m water column (approximately 0.14 bar). The invention also relates to a method for anaerobic purification device for purification of influent.

Anaerobic purification device

A method for the treatment of process water or effluent from a papermaking process, in which this water is subjected to at least one anaerobic purification step, an aeration step and a solids separation step and the water is then returned to the production process, and at least two treated water streams of different quality, which originate from a different combination of purification steps, are returned to different points in the production process.

Circuit purification for the papermaking industry

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Sneek, Netherlands

Leonard Hubertus Alphonsus Habets