Home  Sustainable Land Development Today May 2007
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Written by Author
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Tuesday, 01 May 2007 |
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Land developers benefit from pre-engineered wastewater lift stations.
Developers often must include wastewater lift stations in their subdivisions to pump sewage from the subdivision into the municipal sanitary sewer system. As communities have built out, land that allows for easy gravity flow to sewer lines has become scarce. Topography is the biggest factor; buildable land may be below or over a hill from the nearest existing gravity sewer line; even on flat land, once you’ve trenched the maximum allowable depth to lay sewer pipe, a lift station must be installed.
In most cases the municipal sewage agency will take ownership of the lift station after it is completed. As a result, communities don’t accept just any lift station; there is often a lengthy specification with functional, structural, mechanical, electrical and communication requirements. And because the municipality probably won’t issue building permits for any of the subdivision’s lots until the lift station is completed, the developer’s challenge is to submit a design that meets all the community’s requirements and can be constructed quickly.
Romtec Utilities, Inc. assists developers and their consulting engineers by providing complete lift station design, manufacturing and installation support. Working with developers, engineers and public works agencies, Romtec Utilities is able to streamline the process, saving time and money, while providing complete sewage pumping systems of the highest quality.
Getting started
Romtec Utilities has made it easy for developers to get the lift stations they need. A common subdivision design uses gravity sewer lines to the lift station and a pressure line (force main) for sewage pumped to the municipal sewer system. In creating the subdivision site plan, the developer’s engineer determines both the flow into the lift station and the distance and elevation change of the force main. This and other data is reported to Romtec using a unique lift station design form. From this data, Romtec produces a lift station design and a quote for the complete station delivered to the site.
Working with municipal authorities
Romtec Utilities consults with local sewer authorities to incorporate their lift station design standards. Requirements, which vary from agency to agency, include factors such as:
- Peak design flow and peaking factor for wastewater flow to station
- Flow metering to measure effluent pumped to wastewater treatment
- Standby electrical generator (permanent on-site or portable plug-in)
- Lining or coating of the wet well (for corrosion resistance)
- Building or shelter to house electrical controls
- Odor control system
Working with developers & contractors
In addition to detailed construction drawings and installation instructions, Romtec Utilities serves in an advisory role to developers and their underground and electrical contractors. Benefits to developers and contractors include: - Firm time line from design to delivery and installation to completion
- Component pre-assembly and testing for fast and easy installation
- Coordinated delivery for efficient installation of the complete station
- On-site advisor during installation, start-up and operator training
- Coordination of services by pump and generator field technicians
- Coordination of engineers and wastewater agency staff for final approval
Approval by wastewater agency
To expedite approval by the wastewater agency, Romtec Utilities works closely with the developer’s engineer and contractors to ensure that each lift station is installed as per the approved specification. The completed station is tested under Romtec’s direction, and Romtec provides complete documentation as well as training of agency operation and maintenance personnel.
Complete solutions
The pre-engineered wastewater lift stations designed and supplied by Romtec Utilities give developers complete, cost-effective solutions for meeting the requirements of municipal sewer agencies in the shortest possible time. SLDT
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