Bwt Aktiengesellschaft

Bwt Holding Gmbh

Christ Water Technology Ag

Bwt Aqua Ag

P & Ls Holding Gmbh

Jürgen Johann

Monique Bissen

Pierre Balidas

Christian Brand

Grigorios Kolios

Andrea Pavan

Mathias Schwaiger

Marc Fink

Swen Beusshausen

Anton Mairhofer

Thomas Menzel

Wolfgang Neubrand

Hannes Hittenberger

Werner Neubacher

Christian Schrotshamer

Markus Enzinger

Mark Fink

Werner Kues

Lorenz Haschka

Markus Pichler

Andreas Müller

Thomas Schramm

Thomas Schmidt

Daniel Becker

Christos Triantafillidis

Erwin Leitner

Sabrina Schrotshamer

Alexander Schöppl

Andreas MÜLLER

In order to improve the lifespan of the semi-permeable membrane or the yield of the reverse osmosis system in the treatment of drinking water by means of reverse osmosis, the invention provides a device for treating drinking water with at least one reverse osmosis vessel which is divided into at least two chambers by at least one semi-permeable membrane, wherein a first chamber has an inlet for the water to be treated and an outlet for the concentrate, and the second chamber has an outlet for the treated water, wherein the device comprises at least one pressure vessel which is connected to the outlet for the treated water via a line, wherein the device is designed in such a way that, in an idle state, treated water flows out of the pressure vessel, through the semi-permeable membrane and into the first chamber.

Device and method for purifying drinking water

A backflushing filter having an inlet, an outlet, and a drain; a filter that divides a housing into an inlet chamber that is connected to the inlet and an outlet chamber that is connected to the outlet; a backflushing device having a suction element arranged so that it is able to rotate around the filter on the inlet side of the housing with at least one suction opening that is oriented in the suction direction toward the filter for filter-cleaning purposes; a backflushing duct connected to a suction opening and the drain; and a rotating device which drives the rotational movement of the suction element around the filter when a pressure drop occurs in the backflushing duct; wherein when the pressure drop in the backflushing duct occurs, the rotating device drives the rotational movement of the suction element by the suction direction of the suction opening that is inclined relative to the radial direction of the suction element.

Backflushing filter

A water softening device includes a filter configured to remove hardness from a first stream of raw water to produce a second stream of softened water. The filter includes an ion exchange material which is loaded with a first cationic ion species deriving from a tracer salt and with a second cationic ion species deriving from a regenerant salt. The IEX material shows a lower affinity to the first cationic ion species than to the hardness. At the same time the IEX material shows a higher affinity to the first cationic ion species than to the second cationic species. An electrical property of the second stream is monitored by a sensor. A change in the monitored electrical property can be used as an indicator for the exhaustion state of the filter.

Water softening device and method of operating a water softening device

A water softening device includes a filter configured to decrease hardness of a first stream of raw water to produce a second stream of water with decreased hardness, a first sensor that measures an electrical property of the first stream, a second sensor that measures an electrical property of the second stream, and optionally, a third sensor that detects a water flow through the filter, wherein the filter includes an ion exchange resin operated in H-mode, and the filter is buffered with at least one salt selected from the group of a potassium salt (K), a sodium salt (Na) and a lithium salt (Li).

An apparatus that treats salt-containing water by reverse osmosis, in which the salt-containing water is separated into a permeate stream and a concentrate stream, includes an inlet for the salt-containing water; an outlet for the permeate; an outlet for the concentrate, and a reverse osmosis device, wherein the inlet and the outlets are integrated into a base unit adapted for installation in a positionally fixed manner, and the reverse osmosis device is an exchangeable unit detachably connected to the base unit.

Device and method of preparing salt-containing water by reverse osmosis

A process of treating water includes a membrane separation stage and a deionization stage separating raw water into a first concentrate stream and permeate stream, the first concentrate stream is separated at least in part into a second concentrate stream and permeate stream, the first permeate stream is fed into a diluate chamber from which it exits again as a product stream, the second permeate stream is fed into a downstream electrodeionization appliance from which it exits as a third concentrate stream, and the second and the third concentrate streams are degassed and added to the raw water stream before the stream is fed into the membrane separation stage.

Method and appliance for treating water

The invention relates to methods and to a device for providing a composition containing hyaluronic acid, in particular for cosmetic or medical purposes. This disclosure teaches that hyaluronic acid can be stored in a dose-metering device and that potable water from a potable water network can be mixed with hyaluronic acid using the dose-metering device such that a composition containing hyaluronic acid is formed.

Method and device for providing a composition containing hyaluronic acid

A method of operating a membrane separation device in a continuous flow process includes in the membrane separation device, separating a supply liquid into a first partial stream and a second partial stream, wherein flow rate of the second partial stream and/or recovery rate of the second partial stream is influenced by at least one influencing variable that varies during operation, and varying the flow rate of the first partial stream to compensate for a change of the at least one influencing variable to control flow rate and/or recovery rate of the second partial stream to a preset value.

Methods of operating a membrane separation device, control devices for a membrane separation device and devices that operate a membrane separation device

A process for producing ultrapure water, in which a stream of water is purified in a reverse osmosis device, wherein the water stream is subject to pretreatment including splitting the water stream into at least two partial streams, partial exchange of cations present in at least one of the partial streams for Hions by a cation exchanger operated in the Hmode, and complete exchange of the anions present in at least one further of the partial streams for OHions by a softener operative in parallel to the cation exchanger, and treating the partial streams treated by the cation exchanger and the softener by at least one anion exchanger operating in the OHmode, and wherein the water stream obtained from the pretreatment is fed into the reverse osmosis device.

Process and system for treating water

The invention relates to a process and a device for enriching water, in particular drinking water, with magnesium ions. In order to enable enrichment of water with magnesium ions in exchange for calcium ions and/or heavy metal ions during treatment of water, and in particular of drinking water, it is proposed according to the invention to pass the water through an ion exchanger which contains a weakly acidic ion exchange material, wherein at least a part of its ion exchange capacity is loaded with magnesium ions.

Process and device for enriching water with magnesium ions

A process of producing ultrapure water includes passing a water stream through a plurality of treatment stages in which inorganic and organic species which are present in the water are separated from the water stream; and adding an aqueous hypobromite solution to the water stream in at least one of the stages.

Treatment of water with hypobromite solution

A process for controlled conversion of at least two gases which form ignitable and/or explosive mixtures with one another, in which the gases are absorbed either separately or together in a carrier liquid which is inert in relation to the gases; the carrier liquid with the absorbed gases is fed to a degasser which comprises a closed degassing vessel () which comprises at least one feed line for the gas-laden carrier liquid () and at least one gas outlet () at its upper end, and also one or more drains for the carrier liquid below the feed line for the carrier liquid and in each case connected to a drain pipe (), and in such a manner that the liquid flow rate in the degassing vessel () is less than 0.2 m/s, the gas mixture is removed from the carrier liquid in the degasser and, after leaving the degasser and optional drying, is reacted in a reaction zone; characterized in that the drain pipes () are designed as a closed riser line up to a height level between the exit cross section of the gas outlet from the degassing vessel () and the lowermost level of the reaction zone, and there is pressure equalization between gas outlet () and drain pipes () in this level region. Also described are suitable apparatus for performing the process and specific uses of the apparatus.

Conversion of explosive gas mixtures

A water-conditioning cartridge has a housing that encloses an ion exchanger and can be screwed via a screw thread onto a cartridge-connecting fitting. The cartridge is provided with a water inlet for admission of untreated water, especially from a water-supply system, and with a water outlet, which is connected or can be connected to a consuming component, especially a beverage machine. To ensure that the water-conditioning cartridge can be screwed onto only a particular cartridge-connecting fitting designed for this type of water-conditioning cartridge, the housing and the cartridge-connecting fitting are each provided with a plurality of annular coding ribs, which are disposed concentrically relative to the thread axis of the screw thread, and which engage with one another when the housing is screwed onto the cartridge-connecting fitting.

Growing community of inventors

Nussloch, Germany

Jürgen Johann