What is a sewage lift stations and how do they work

How do sewage lift stations work?

Sewage lift stations are used for pumping wastewater or sewage from a lower to higher elevation, particularly where the elevation of the source is not sufficient for gravity flow and/or when the use of gravity conveyance will result in excessive excavation and higher construction costs. Sewage lift stations/pump stations may be used as a matter of economics or to overcome inadequate hydraulic head when it is obvious that no other solution is practical. For instance, it may be more economical to utilize a sewage pump station to pump or lift the sewage over a ridge and let it flow by gravity to a sewage treatment plant, or to elevate sewage to pass through a sewage treatment system by gravity.

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What are the key components of a lift station?

Often called lift stations, units are commonly built as a factory assembled package system. Key elements of lift/pump stations include a wastewater treatment receiving well (wet-well), equipped with lift pumps and piping with valves, a junction box, and an equipment control panel with alarm system. The submersible type lift/pump station can be utilized on low flow, low head type installations. Two types of pumps are available for this application, grinder pumps and solids handling pumps. A properly designed wet well is essential for efficient and trouble-free operation of the lift/pump station. The purpose of a wet well is to provide a means of allowing automatic operation of the lift station with a simple control. Use of the wet well for any other purpose, such as a storage reservoir for sewage, is not recommended. The wet well should be as small as possible in order to minimize detention time of the sewage. Should the wastewater remain too long in the wet well, septic action may occur. Although, the wet well should be large enough so excessive starting and stopping of the lift station pump will not take place. Advantages of submersible lift/pump stations are that they typically cost less than dry-well stations and operate without frequent pump maintenance. Submersible lift/pump stations do not usually include large above ground structures and tend to blend in with their surrounding environment.

How long do sewage lift stations last?

For the most part, an engineer can anticipate a life expectancy of 15 - 20 years or more from steel lift stations. This is more than adequate in cost cases, since the anticipated flow rates are usually designed for only ten years expansion. Steel lift stations are coated with a high solids epoxy paint system and further protected by anodes to deter cathodic action.

If you are in need of maintenance, repairs, or cleaning services on your sewage lift station or require a lift station installation, contact us at Wind River Environmental. Our lift station experts are here for all your lift station needs so call today, to speak with one of our experts.

For more Commercial Sewage Lift Station Pumpsinformation, please contact us. We will provide professional answers.

Delivering the Most Efficient and Longest-Lasting Packaged Wastewater Pump Stations 

Smith & Loveless Inc.’s factory-built and tested above-ground wastewater pump stations and sewage lift stations deliver end-users and operators the benefits of robust construction, operator-safe maintenance, and single-source reliability. The result is efficient lift station performance, long service life and realized life-cycle cost savings—verified by decades of successful installations and leading warranty protection.

S&L packaged wastewater pump stations arrive pre-assembled with all equipment installed on a common base and a quick-access enclosure, allowing quick and easy installation on the wet well after basic suction pipe and electrical connections were completed. Our unique pump station solutions offer our engineering and end-user partners a strong alternative to conventional lift station approaches. Our proprietary EVERLAST™ Above-Ground Pump Stations offer the industry's most operator safe and easiest pump station to maintain -- everything is above the wet well and inspection of the complete pump station can be accomplished in mere seconds, eliminating all of the confined space hassles and costs associated with pulling sewage-coated submersible pumps from the wet well and accessing confined space valve vaults. Additionally, S&L innovated the original factory-built pump station concept with our Custom Series and CAPSULAR® Pump Stations with Safe-Stair™ access, designed for deeper bury and safe, continuous human occupancy. These pumping systems stand as cost-saving alternatives to concrete, built-in-place underground pump stations. 

Powering S&L lift stations are proprietary STAR ONE™ Non-Clog Wastewater Pumps, each designed to meet the 10 States Standard for passing three-inch (3”) solids. These wastewater pumps— with their exclusive oversized stainless-steel pump shafts, oversized bearings, and bronze seal housings— deliver the industry’s longest service life and high efficiencies for solids-handling pumps. The pumps' larger shaft diameter provides increased rigidity, while its stainless-steel composition eliminates the possibility of rusting, one of the leading causes of eventual pump failure for solids handling wastewater pumps. The STAR ONE™ construction provides streamlined access for superior ease of maintenance of any wastewater pump: full access to the volute and suction elbow is possible by merely removing the cap screws and raising the entire rotating assembly in just a few minutes without spillage.

For more information, please visit Commercial Sewage Lift Station.