Abstract: A phase separator apparatus is disclosed which utilizes phase separator modules for insertion in a separation tank. The modules include a frame for retaining a plurality of impingement plates within the frame utilizing removable retention means, such as slots, allowing easy removal and replacement of the impingement plates. The phase separator module also includes vertical baffles for blocking the flow of fluid to be separated and forming a quiescent region on either side of the impingement plates normal to the direction of flow to the fluid to be separated. The removable retention means, such as slots in the frame, not only allow removal for cleaning and maintenance of the plates, but also provide a means for adjusting the spacing of the gap between the plates, the plate length or a combination of both, in order to modify the efficiency of the separator.

Abstract: A phase separator apparatus is disclosed which utilizes phase separator modules for insertion in a separation tank. The modules include a frame for retaining a plurality of impingement plates within the frame utilizing removable retention means, such as slots, allowing easy removal and replacement of the impingement plates. The phase separator module also includes vertical baffles for blocking the flow of fluid to be separated and forming a quiescent region on either side of the impingement plates normal to the direction of flow to the fluid to be separated. The removable retention means, such as slots in the frame, not only allow removal for cleaning and maintenance of the plates, but also provide a means for adjusting the spacing of the gap between the plates, the plate length or a combination of both, in order to modify the efficiency of the separator.

Abstract: An electrolytic flotation system for purifying waste water includes plurality of planar electrodes in a flotation tank. The electrodes are arranged to distribute the production of microbubbles uniformly throughout a large region of a flotation zone resulting in a uniform non-turbulent flow path between the inlet and outlet of the tank. Consequently, highly efficient removal of impurities is obtained with a relatively low detention time. The electrolytic flotation system also includes a tapered float concentration zone for separating the float from the waste water and a sump region for separating settled sludge from the waste water.The electrolytic flotation system utilizes rapid current reversal at low amp density. The rapid current reversal in the electrolytic flotation system allows the use of stainless steel electrodes without the need for noble metal coatings.

Abstract: An electrolytic flotation system (10) for removing foreign matter from waste water includes a plurality of planar electrodes (32 and 34) in a flotation tank (12). The electrodes are arranged so that they distribute the production of microbubbles uniformly throughout a large region of the flotation zone (30). Furthermore, the planes in which the electrodes lie are substantially parallel to the flow path between the inlet (14) and the outlet (16) of the tank (12). As a consequence, efficient removal of foreign matter occurs with a relatively low detention time.

Abstract: Thickening method and apparatus includes conventional settling vessel with moving rake and pickets at the bottom thereof to promote sludge settling and compression and a plurality of inclined passageways for upwardly flowing liquid. Upflowing liquid from the hindered settling feed is clarified in the inclined passageways from which a presettled semisolid mass flows downwardly into a detention zone of compressive thickening sludge. This interrelationship of inclined passageways and compressively thickening zone enhances the effectiveness of the thickening process.