US 5,296,137 A · Filtration system with axial flow cartridge

Abstract

An axial flow filtration cartridge, a system, a support assembly, an apparatus, as well as a process are provided for removing particulate matter as well as dissolved heavy metal ions and the like from an aqueous effluent stream. The invention is useful for removing contaminants from industrial waste streams. The cartridge contains features which make it relatively resistant to fouling by solid particles. Additionally, the cartridge has no central void volume. No separate housing for the cartridges is required. In a system embodiment the cartridge has a filtering chamber containing absorbent clay particles confined between porous liquid-permeable retainer means. An upstream cartridge cap and a downstream cartridge cap removably receive the ends of the filter cartridge in a liquid-tight seal. The flow of aqueous effluent to each of the cartridges is individually controlled. An apparatus embodiment combines a filtration assembly incorporating the filter cartridges with a support assembly which facilitates installation and replacement of the cartridges. When utilized in the apparatus embodiment, regeneration and recycling of the adsorbent clay is relatively easy.

Claims16

Dependent claims

A system suitable for treating an aqueous effluent in a confined flow environment, which system comprises:

an elongated, axial flow filter cartridge including a bed of particulate constituted by superdried clay particles and foraminous retainer means to retain the clay particles within the cartridge;
an upstream cartridge cap defining an effluent inlet port and a seat for one end of the filter cartridge;
an end piece located between the bed and said inlet port and spaced from said upstream cartridge cap, said end piece defining a plurality of apertures adapted to pass and distribute a flow of the aqueous effluent and also defining, together with the cap, a plenum chamber above said apertures;
a downstream cartridge cap defining a filtrate outlet port and a seat for the other end of the filter cartridge;
an effluent conduit in liquid flow communication with said inlet port;
a filtrate conduit in liquid flow communication with said outlet port;
a flow control valve in said effluent conduit;
and
a back pressure regulating valve in said filtrate conduit;
said axial flow filter cartridge being removably received and retained in a liquid-tight relationship between said cartridge caps.

7 more elements

Dependencies are inferred from the claim text.

Filtration system with axial flow cartridge

Life of this patent

Filtration system with axial flow cartridge

Life of this patent

Abstract

Claims16