A filtering and concentrating apparatus having a stirring function for small ternary precursor particles, comprising a barrel (100). One end of the barrel (100) is provided with a first closure (101), and the other end of the barrel (100) is provided with a second closure (102). The barrel (100) or the first closure (101) or the second closure (102) is provided with a feed port (103). One or more discharge pipes (200) are provided on the inner wall of the barrel (100). Microporous filtering mediums (300) communicated with the interior of the discharge pipe (200) are provided on the discharge pipe (200). An end portion of the discharge pipe (200) is communicated with the exterior of the barrel (100). A stirring means (800) is provided inside the barrel (100).

A regenerative filter that includes a filter housing having inlet and outlet zones; a fluid path provided between the inlet and outlet zones; a plurality of filter elements each having an outer surface filter media applied thereto and functioning to filter particulate or contaminants from the fluid path; and a tube sheet that is supported across the filter housing, that is disposed just before the outlet zone and that provides the support for the plurality of filter elements. The plurality of filter elements are disposed in an array and includes bridging members or elements that connect between adjacent filter elements, and that forms with the filter elements, a closed interstitial space between adjacent filter elements for liquid flow; a nanoscale barrier on interior surfaces, including that of the regenerative media itself, providing a mechanism to disrupt the cell wall of microscopic viruses and organisms.

A regenerative filter that includes a filter housing having inlet and outlet zones; a fluid path provided between the inlet and outlet zones; a plurality of filter elements each having an outer surface filter media applied thereto and functioning to filter particulate or contaminants from the fluid path; and a tube sheet that is supported across the filter housing, that is disposed just before the outlet zone and that provides the support for the plurality of filter elements. The plurality of filter elements are disposed in an array and includes bridging members or elements that connect between adjacent filter elements, and that forms with the filter elements, a closed interstitial space between adjacent filter elements for liquid flow; a nanoscale barrier on interior surfaces, including that of the regenerative media itself, providing a mechanism to disrupt the cell wall of microscopic viruses and organisms.