combined sewers

combined sewers

[kəm′bīnd ′sü·ərz]
(civil engineering)
A drainage system that receives both surface runoff and sewage.
References in periodicals archive ?
Combined sewer - Demolition of 5 manholes;- Conversion of 2 manholes;- New construction of 3 manholes;- Dismantling of combined sewers of concrete DN 300-800 300 m;- Construction of new combined sewers of concrete DN 300 20 m;- Construction of new combined sewers of concrete DN 600 approximately 75 m;- Construction of new combined sewers of concrete DN 800 140 m;- Excavated soil about 1 650 mA;- Resurfacing about 180 mA.
Located near Crompton Park, the Quinsigamond Avenue Combined Sewer Overflow Treatment Facility functions as a sewer pumping station during dry periods or small rain storms, when only sewage or sewage mixed with moderate amounts of runoff is flowing through the combined sewers.
WSA provides sewage collection and treatment to nearly 60,000 people within Williamsport and several surrounding communities, using a system that includes combined sewers carrying both sewage and storm water runoff.
According to a consent decree filed in September in federal court, the city is required to develop and implement a comprehensive plan to reduce, and where feasible, eliminate overflows into the Ohio River from its combined sewers by calendar year 2020 or 2025, depending on Jeffersonville's financial health; implement a plan with specific actions to improve the capacity, management, operation, and maintenance of its sanitary sewer system to eliminate overflows of untreated sewage; and eliminate all discharge points within its sanitary sewer system.
The wastewater treatment industry argues that bypassing biological treatment for a portion of the water is a significant improvement over releasing completely untreated wastewater, which is what happens when combined sewers overflow.
Recent modifications to the Consent Decree, established in 2006 to address the problem of raw sewage flowing into streams and waterways through combined sewers across Indianapolis and finalized in December 2010, will allow the City to move forward on the project years ahead of schedule.
The main goal of these projects is to separate stormwater and sanitary flows from the existing combined sewers.
In some locations, such as Cumberland and Washington, DC, the mud and sludge drains into combined sewers (that hold both rainwater and raw sewage) and, if it rains (in some areas more than 1/10 of 1 inches), overwhelms the combined sewers and flows directly into the Potomac River and its tributaries without first being treated.
CSO Definition: Combined sewers carry raw sewage, industrial waste and storm water in a single pipe.
The City has reported a large number of basement flooding incidents over the years in the combined sewer area resulting from surcharging of the City's combined sewers, which carry wastewater and stormwater in the same pipes.
Tenders are invited for Resident Engineering Inspection Services for High Level Sewer Separation, Storm, Sanitary and Combined Sewers and Water Main Work in Fresh Creek Basin Area - Phase 1A, Borough of Brooklyn.
In turn, the combined sewers could then be used to store and carry excess sewage that is frequently discharged from SSO 700 when it rains, thus eliminating these SSO 700 overflows.

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