A bottom-up approach to estimate dry weather flow in minor sewer networks.
نویسندگان
چکیده
In order to evaluate the feasibility of installing decentralised installations for wastewater reuse in cities, information about flows at specific spots of a sewer is needed. However, measuring intermittent flows in partially filled conduits is a technical task which is sometimes difficult to accomplish. This paper describes a method to model intermittent discharges in small sewers by linking a stochastic model for wastewater discharge to a hydraulic model to predict the attenuation of the discharges and its impact on the arrival time to a defined spot. The method was validated in a case study. The model estimated adequately the wastewater discharges on working days.
منابع مشابه
Constructed Wetlands for Combined Sewer Overflow Treatment
Combined sewer systems are designed to transport stormwater surface runoff in addition to the dry weather flows up to defined limits. In most European countries, hydraulic loads greater than the design flow of wastewater treatment plants are discharged directly into the receiving water bodies with minimal treatment (screening, sedimentation) or with no treatment at all. One feasible solution to...
متن کاملCombined Sewer Overflow Technology Fact Sheet Maximization of In-line Storage
Sewer systems that convey both sanitary sewage and storm water through a single pipe are referred to as combined sewer systems (CSSs). In dry weather, the CSS is able to convey all flows to the wastewater treatment facility. During periods of heavy rainfall, however, the capacity of the CSS may be exceeded and an untreated combination of sewage and storm water may discharged directly into a nea...
متن کاملOpen Archive Toulouse Archive Ouverte (oatao) Impact of Dry Weather Discharges on Annual Pollution from a Separate Storm Sewer in Toulouse, France
OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. Impact of dry weather discharges on annual pollution from a separate storm sewer in Toulouse, France. • Dry weather discharges from storm sewers have an impact on annual pollution load. • The more urbanized the outlet is, the more important the pollution i...
متن کاملAssessing Continuous Contamination Discharge from a Combined Sewer Outfall (CSO) into a Tidal Wetland Creek: Bacteriological and Heavy Metals Indicators
Continuous discharge from a combined sewer overflow (CSO) into a tidal wetland creek in the New York City urban area was analyzed to assess the extent of water quality degradation during both dry and wet weather. A combination of fecal indicator bacteria (FIB), total suspended solids, and dissolved metals were used to infer the presence of sewage and fecal pollution from the CSO discharge and t...
متن کاملDynamics of pollutant discharge in combined sewer systems during rain events: chance or determinism?
A large database of continuous flow and turbidity measurements cumulating data on hundreds of rain events and dry weather days from two sites in Paris (called Quais and Clichy) and one in Lyon (called Ecully) is presented. This database is used to characterize and compare the behaviour of the three sites at the inter-events scale. The analysis is probed through three various variables: total vo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Water science and technology : a journal of the International Association on Water Pollution Research
دوره 69 5 شماره
صفحات -
تاریخ انتشار 2014