Efficient flow within a manhole is an often-overlooked aspect of collection system construction and rehabilitation. Controlling the flow from elevated inlets is critical to reducing odors, H2S release, and structure erosion. Inside manhole drops are particularly advantageous, as they are simple to maintain and cost effective to install.
By using an inside drop for all elevated inlets and service connections, influent is efficiently conveyed to the invert channel and released in the flow direction. The accumulation of solids on the manhole bench is eliminated and solids and liquids remain together. Smooth manhole invert channels improve flow capacity, reducing the occurrence of system backups and standing sewage within the manhole.
RELINER®/Duran Inc. provides a full range of products specifically developed to provide efficient, controlled conveyance of flow through manholes. RELINER Inside Drop Bowls capture inflow and convey it directly to the invert channel though the drop pipe.
RELINER stainless pipe support brackets securely fasten drop pipes or any other pipes to structure walls. RELINER modular manhole invert channels are also made from marine grade fiberglass, providing a consistent cross-sectional area with very high flow capacity. WW
RELINER®/Duran Inc. is a Connecticut-based manufacturer dedicated to providing simple, cost-effective, durable products for use in the wastewater and construction industries. To learn more, visit www.reliner.com.
Published in WaterWorld magazine, December 2021.
