Abstract: An implant with which prostates of different sizes can be treated is achieved by the fact that the length of a deployed implant is modifiable to a variable extent. Through the change of length of a stretched-out wire structure of the implant, the implant can be adapted individually to the patient anatomy and the outcome of treatment can thus be improved.

Abstract: The invention relates to a fitting for distributing a gas flow to two or more flow ducts, wherein the fitting has an inlet connecting piece (20) and two or more separate outlet connecting pieces (21, 22), wherein upstream of each outlet connecting piece (21, 22) there is arranged a disc valve, wherein the disc valve inserts (15, 16) of two or more disc valves are kinematically coupled, and to a method for cleaning filter elements (4) immersed in a basin (1), in particular diaphragm filters, by aeration of the filter elements by means of gas bubbles which are introduced into the basin (1) below the filter elements (4) via aerators (5), wherein a gas flow for aerating the filter elements (4) is generated by means of a blower (7), wherein the gas flow is distributed by means of a fitting to two or more aerators (5), wherein the distribution of the gas flow takes place discontinuously, such that a pulsed aeration of the filter elements (4) of varying duration takes place at irregular intervals.

Abstract: Biologically treated wastewater is directed as mixed liquor from a treatment tank to a downstream filtration tank having a having a submerged membrane module extending across the cross-sectional area of the filtration tank. Mixed liquor is directed from the bottom of the filtration tank upwardly into the membrane module such that substantially all of the mixed liquor received in the bottom of the filtration tank flows through the membrane module. A permeate stream is produced. A portion of a non-permeate stream is recirculated to the treatment tank. The filtration tank is sized such that there is no substantial recycle of mixed liquor in the filtration tank. Once the mixed liquor in the filtration tank makes one pass through the membrane module the mixed liquor is recycled to the treatment tank and generally not permitted to be recycled through the membrane module without first returning to the treatment tank.

Abstract: A method and system is provided for treating wastewater. In one process, wastewater is directed into a treatment tank and biologically treated. The biologically treated wastewater is directed as mixed liquor from the treatment tank to a bottom portion of a downstream filtration tank having at least one submerged membrane module that extends across substantially the entire cross sectional area of the filtration tank mixed liquor is directed from the bottom of the filtration tank upwardly into the membrane module such that substantially all of the mixed liquor received in the bottom of the filtration tank flows through the membrane module. As the mixed liquor flows vertically through the membrane module, the method includes inducing at least some of the mixed liquor through walls of one or more membrane filters that form a part of the membrane module, producing a permeate stream.

Abstract: A method and system is provided for treating wastewater. In one process, wastewater is directed into a treatment tank and biologically treated. The biologically treated wastewater is directed as mixed liquor from the treatment tank to a bottom portion of a downstream filtration tank having at least one submerged membrane module that extends across substantially the entire cross sectional area of the filtration tank mixed liquor is directed from the bottom of the filtration tank upwardly into the membrane module such that substantially all of the mixed liquor received in the bottom of the filtration tank flows through the membrane module. As the mixed liquor flows vertically through the membrane module, the method includes inducing at least some of the mixed liquor through walls of one or more membrane filters that form a part of the membrane module, producing a permeate stream.