View source for CCAT kitchen effluent particulate filter

=== Photos and descriptions ===

[[File:Inside Pizza Box.jpg|thumb|'''Figure 1:''' Picture of The Pizza Box with the door open allowing access to the Filters. Image Source: Team ECO PLUMBERS]]

The Pizza Box, shown in Figure 1 and Figure 2, is a greywater filter designed to remove particulate matter from CCAT’s kitchen sink effluent. The Pizza Box consists of two main parts; the coarse filter that removes particles larger than 3/16 inch and the fine filter that removes solids larger than 420 microns. The body of the filter is constructed from 3/8 inch PVC glued together using PVC cement and primer. The Pizza Box is seven and one half inches tall and ten inches square. There are two stainless steel hinges that connect the door of the filter to the frame. The seal for the door is made from foam-rubber stripping that is reinforced with silicone gasket gel. Two catch-and-draw latches located on top of the filter body provide the needed force to create a water-tight seal between the door and the filter body.

[[File:Outside Pizza Box.jpg|thumb|right|'''Figure 2:''' View of outside of the The Pizza Box. Image Source: ECO PLUMBERS]]

Sink effluent may escape the filter during cleaning when the user opens the door and removes the filters. To counter the escape of sink effluent, The ECO-PLUMBERS designed the location of the door hinges at the bottom edge of the frame. This door location allows the open door to catch effluent as it drips from the removed filter, thus minimizing mess during cleaning.

The interior of the frame is lined at the bottom with fiberglass resin, as shown in Figure 20, to create the needed funnel shape necessary to allow water to properly drain from the mechanism. When both filters are removed, wastewater may still be passed through the device, but will enter the greywater marsh without filtration.

The weight of the device is 20 pounds and therefore requires a support to prevent excessive stress on the plumbing fixtures. A table-like support was constructed to provide the necessary supports to hold The Pizza Box in place during use and maintenance. The supporting table has a 3/8 inch PVC shelf supported by four aluminum legs. The legs are attached to the shelf by stainless steel screws that are easily removed for adjustment.