S. Roberts Company
Product Lines
Installation:
The Infinity™ Underdrain is a dual-lateral system, manufactured from a corrosion resistant lightweight material. The overall height of the underdrain when installed is a nominal 6". Each lateral is custom manufactured to the required filter width. Customized lateral lengths in excess of 30 feet without a joint can be manufactured.
The Infinity Underdrain eliminates potential joint failures since no assembly of individual lateral runs is required to assemble a complete lateral. There are no joints requiring snaps, clips, grout or other attachment devices requiring O-rings, tongue and groove connections or gasketing between blocks to assemble a complete lateral run. Each Infinity underdrain lateral is shipped to the jobsite completely assembled. Flume openings are pre-cut into each lateral and custom flume blocks are not required.
The Infinity Underdrain exhibits excellent distribution characteristics all with a low profile in order to maximize filter freeboard and bed depth. The top surface of each lateral contains the appropriate number of discharge orifices to assure proper distribution. This feature assures that filtered water will be uniformly collected, and backwash water uniformly discharged into the media placed above the underdrain system.
The Infinity Underdrain can be supplied with or without a porous plate. The porous plate eliminates the need for the gravel support and the unique rail mount system provides a positive mechanism to prevent media migration into the underdrain.
The Trilateral™ Air/Water Underdrain from Roberts Leotech offers water producers and their consulting engineers flexibility to choose an underdrain system for their specific needs.
The Trilateral underdrain uses a passive air-scour approach to replace conventional, water-only backwashes. This proven design offers a low cost, easy to assemble combined air/water or water-only underdrain installation.
The Roberts Leotech Trilateral Underdrain System is an excellent system for filters utilized in both water and wastewater treatment plants. The Trilateral is designed to provide efficient distribution of backwash water for both water only backwashes and combined air/water backwashes.
A long history of proven performance and versatility establish the tile underdrain as a traditional technology underdrain system. Over the past two decades, our "dual-parallel lateral" ceramic block underdrain system has gained wide acceptance in both new and retrofit applications.
The Aries® Managed Air System is a revolutionary filter air scour system. The Aries is the preferred method of auxiliary wash for the cleansing of a filter, since it provides thorough cleansing of the entire filter bed versus surface wash systems or passive air systems which are only effective in the top layer of the filter bed.
The Aries Managed Air System provides "bottom-to-top" cleaning action which passive air systems do not. The location of the Aries Managed Air System at the gravel/media interface allows the introduction of pressurized air directly into the bottom of the filter media. By releasing pressurized air directly into the media, 100% of the air's energy is used to scour the media. In passive air/water underdrains, the underdrain absorbs most of the air's energy. By managing the air in a pressurized environment until it is introduced into the media; superior distribution is achieved which provides excellent cleaning at lower airflow rates.
The Aries Managed Air System can be installed and removed without replacing the filter media, and it is adaptable to any filter design without the need for replacing the underdrain.
The Aries is a modular system allowing Roberts to provide a layout for any size filter ensuring complete coverage of the media area. The lightweight stainless steel construction of the Aries allows the flexibility needed for universal application while providing maximum reliability.