P & Ls Holding Gmbh

Bwt Aqua Ag

Swen Beusshausen

Juergen Johann

Wolfgang Neubrand

Jürgen Johann

Christian Brand

Pierre Balidas

Thomas Menzel

Denis Stöcklin

Denis Stoecklin

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

A membrane separation device that treats water constructed such that at least two permeate streams of different electrical conductivity are generated therein, including at least two membrane modules arranged in a common pressure vessel such that they can be successively subjected to incoming flow of the water to be treated, wherein the pressure vessel is a tube in which the at least two membrane modules are arranged one behind the other in an axial direction and the at least two membrane modules are spirally wound modules.

Membrane separation devices and water treatment plants

A description is given of a multistage process for treating water, wherein a water stream is purified in a membrane separation stage and a downstream deionization unit having at least one concentrate chamber and at least one diluate chamber, wherein the water stream is separated in the membrane separation device into a concentrate stream and at least two permeate streams of different electrical conductivity, and wherein at least the permeate stream having the highest electrical conductivity is fed at least partially into the at least one concentrate chamber and at least the permeate stream having the lowest electrical conductivity is fed at least partially into the at least one diluate chamber of the downstream deionization unit. In addition, a membrane separation device is described which is constructed in such a manner that at least two permeate streams having different electrical conductivity can be generated therein, and also a water treatment plant, comprising at least one such membrane separation device and at least one deionization unit having at least one concentrate chamber and at least one diluate chamber.

Water treatment process, and membrane separation process and water treatment plant suitable therefor

A spiral wound module for the electrochemical desalination of aqueous salt-containing solutions, whose feeds for solution to be desalinated and whose discharge for desalinated water are mounted on side walls of the dilution chamber of the module, permits an axial instead of tangential flow in the dilution chamber.

Growing community of inventors

Steinen, Germany

Swen Beusshausen