Abstract: Water treatment systems and methods are provided to minimize membrane fouling and the required maintenance that results therefrom. A water treatment system includes a pressure vessel with a plurality of spaced-apart membranes disposed therein, and an impeller or other means for circulating feed water through the interior of the vessel and past the membranes. Antifouling particles (such as diatomaceous earth or activated carbon) and/or pellets can be added to the feed water inhibit membrane fouling and extend the useful life of the membranes.

Abstract: Water treatment systems and methods are provided to minimize membrane fouling and the required maintenance that results therefrom. A water treatment system includes a pressure vessel with a plurality of spaced-apart membranes disposed therein, and an impeller or other means for circulating feed water through the interior of the vessel and past the membranes. Antifouling particles (such as diatomaceous earth or activated carbon) and/or pellets can be added to the feed water inhibit membrane fouling and extend the useful life of the membranes.

Abstract: Water treatment systems and methods are provided to minimize membrane fouling and the required maintenance that results therefrom. A water treatment system includes a pressure vessel with a plurality of spaced-apart membranes disposed therein, and an impeller or other means for circulating feed water through the interior of the vessel and past the membranes. Antifouling particles (such as diatomaceous earth or activated carbon) and/or pellets can be added to the feed water inhibit membrane fouling and extend the useful life of the membranes. A pressure differential across the membranes can be periodically reduced or eliminated, for example by closing a permeate valve, while the feed water continues to circulate.

Abstract: Water treatment systems and methods are provided to minimize membrane fouling and the required maintenance that results therefrom. A water treatment system includes a pressure vessel with a plurality of spaced-apart membranes disposed therein, and an impeller or other means for circulating feed water through the interior of the vessel and past the membranes. Antifouling particles (such as diatomaceous earth or activated carbon) and/or pellets can be added to the feed water inhibit membrane fouling and extend the useful life of the membranes.

Abstract: A DEMWAX™ water treatment system includes membrane modules and a collection channel. The membrane modules are submerged at depth and tethered to one or more anchors on the ocean floor. A breathing tube extends between the collection channel and a buoy floating on the surface of the ocean to expose the collection channel to atmospheric pressure. A pump pumps the permeate from the collection channel to shore through a permeate pipe. One or more permeate storage tanks can optionally be disposed within the system, for example, as part of or extending from the collection channel, to provide extra storage.

Abstract: A water treatment and conveyance system includes a plurality of substantially planar membrane elements arranged in a stack. Adjacent membrane elements in the stack are spaced apart from one another by element spacers. The element spacers have one or more openings that are in fluid communication with the permeate sides of adjacent membrane elements. The openings are sealed off from the source water sides of the membrane elements by one or more sealing members. The openings in the element spacers cooperate to define a conduit for the filtered permeate. Methods for treating water and conveying treated water are also provided.

Abstract: A DEMWAX™ water treatment system includes membrane modules and a collection channel. The membrane modules are submerged at depth and tethered to one or more anchors on the ocean floor. A breathing tube extends between the collection channel and a buoy floating on the surface of the ocean to expose the collection channel to atmospheric pressure. A pump pumps the permeate from the collection channel to shore through a permeate pipe. One or more permeate storage tanks can optionally be disposed within the system, for example, as part of or extending from the collection channel, to provide extra storage.