Fluid purification media and systems and methods of using same

21:

• A method of removing lead from water comprising the steps of:
• contacting the water with a fluid purification system, comprising:
• a mineral-free, first fluid purification media comprising a first rigid porous purification block, comprising:
• a longitudinal first surface;
• a longitudinal second surface disposed inside the longitudinal first surface;
• and
• a porous high density polymer disposed between the longitudinal first surface and the longitudinal second surface;
• a second fluid purification media, comprising a fibrous, nonwoven fabric disposed adjacent to the first surface of the first fluid purification media, the second surface of the first purification media, or both wherein:
• the longitudinal first surface has a first transverse dimension;
• the longitudinal second surface is an inner surface having a second transverse dimension;
• the ratio of the first transverse dimension to the second transverse dimension is in the range of 1.2 to 3.5, and the difference between the first transverse dimension and the second transverse dimension is the thickness of the porous purification block;
• a third fluid purification media, comprising a second rigid porous purification block having a longitudinal outer surface and a longitudinal inner surface, wherein the longitudinal inner surface is disposed transversely outside the longitudinal first surface of the first fluid purification media and defining a transverse gap therebetween, or wherein the longitudinal outer surface is disposed inside the longitudinal second surface of the first fluid purification media, and defining a transverse gap therebetween;
• and
• a fourth fluid purification media, comprising particles of a fluid purification material disposed in the transverse gap;
• removing the lead from the water also containing at least one of TOC and TTHM.

30:

• A fluid purification system for removing lead from water also containing at least one of TOC and TTHM, comprising:
• a mineral-free, first fluid purification media comprising a first rigid porous purification block, comprising:
• a longitudinal first surface;
• a longitudinal second surface disposed inside the longitudinal first surface;
• and
• a porous high density polymer disposed between the longitudinal first surface and the longitudinal second surface;
• a second fluid purification media, comprising a pleated fibrous, nonwoven fabric disposed adjacent to the first surface of the first fluid purification media, the second surface of the first purification media, or both wherein the fibrous nonwoven fabric of the second fluid purification media is folded to form a plurality of pleats and comprising an active material disposed on, among, or in the pleated, fibrous, nonwoven fabric, and wherein:
• the longitudinal first surface has a first transverse dimension;
• the longitudinal second surface is an inner surface having a second transverse dimension;
• and
• the ratio of the first transverse dimension to the second transverse dimension is in the range of 1.2 to 3.5, and the difference between the first transverse dimension and the second transverse dimension is the thickness of the porous purification block;
• a third fluid purification media, comprising a second rigid porous purification block having a longitudinal outer surface and a longitudinal inner surface, wherein the longitudinal inner surface is disposed transversely outside the longitudinal first surface of the first fluid purification media and defining a transverse gap therebetween, or wherein the longitudinal outer surface is disposed inside the longitudinal second surface of the first fluid purification media, and defining a transverse gap therebetween;
• and
• a fourth fluid purification media, comprising particles of a fluid purification material disposed in the transverse gap.

36:

• A fluid purification system for removing lead from water also containing at least one of TOC and TTHM, comprising:
• a hollow first fluid purification media comprising a mineral-free, first rigid porous purification block formed from a porous high density polymer combined with carbon particles;
• a second fluid purification media comprising a fibrous, nonwoven fabric positioned radially inward of the first fluid purification media;
• a third fluid purification media comprising a second rigid porous purification block spaced radially inward from the second fluid purification media to define a transverse gap therebetween;
• and
• a fourth fluid purification media comprising particles of a fluid purification material disposed in the transverse gap.