Tetra Process Technologies Seven Trent Services Company

Seven Trent Water Purification, Inc.

Joseph M Bonazza

David C Slack

Navin Kadakia

Donald J McCarty

A system and method for forming a filter media support system with dual locking mechanisms. The support system comprises two or more interlocking rows of support blocks. One or more slides and one or more guides protrude from the side walls of the blocks. Each guide is conformed to receive one slide from a neighboring block, forming a first locking joint. The side walls also comprise one or more posts and one or more sockets. Each post is conformed to fit within one socket of a neighboring block, forming a second locking joint. In one embodiment, the method for assembling the support system comprises aligning a slide of a first support block with a guide of a second support block. The slide of the first support block is vertically moved into the guide of the second support block. Force is applied so that the posts snap-lock into the sockets.

System method for interlocking support blocks

A system () comprising multiple units (-) and method for filtration of wastewater () is disclosed. Simultaneous denitrification of a single filter unit and normal filtration of the remaining filter units is provided for. Separate flow control systems () are described.

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Tarentum, PA, United States of America

Joseph M Bonazza