A water catchment and lawn edging system includes a cap, a channeled drain fixture, and at least one base clip. The base clip, which connects the system to the ground surface, is connected to a bottom end of the channeled drain fixture. Depending upon the length or the profile of the channeled drain fixture, the system can utilize a single base clip or a plurality of base clips to properly support the system. The cap is continuously connected along the channeled drain fixture from a top end of the channeled drain fixture. The cap may include a plurality of drain openings to provide additional drainage for the system. Collectively, the cap, the channeled drain fixture, and the base clip function as a water catchment and lawn edging system so that surface and ground water can be drained and filtered away from a collecting area and discharged into an outfall.

A screen includes a framework of a first material having one or more openings therethrough defining a fluidic filter, and a substance of a second material positioned within the one or more openings in the framework and configured to be removable from the framework during an electrochemical reaction.

A screen includes a framework of a first material having one or more openings therethrough defining a fluidic filter, and a substance of a second material positioned within the one or more openings in the framework and configured to be removable from the framework during an electrochemical reaction.

The present invention relates to a filter element for filtering particulate materials in a fluid, comprising a first filtration zone comprising first-size particles and a second filtration zone comprising second-size particles, as well as a transition zone comprising a mixture of first-size particles and second-size particles and interconnecting the first filtration zone and the second filtration zone. Preferably, the filter element is a carbon block formed by sintering two types of activated carbon particles having different sizes and ultra-high-molecular-weight polyethylene around them. The filter element of the present invention has both higher filtration capacity and higher absorption capacity. In addition, the present invention further relates to a method for manufacturing the filter element of the present invention.

The disclosure herein relates to a sorbent filter for filtering at least one of an axial, radial, and perpendicular flow of at least one of a gas, plasma, liquid, and solid particulates, the sorbent filter having a support material, a binder material for binding one or more active chemical material from a functional group to the support material and a filter body. The filter body includes a height of the sorbent filter longer than a radius of the filter body, the radius extending from a center axis through the filter body; an inner surface having a thickness less than the radius, and an outer surface in contact with at least one electrolyte and electrode for transmitting a voltage to the filter body.