Settlers Articles

9 Results found
  • Category: Water & Wastewater ×

  • Subcategory: Settlers ×

Lamella settlers for storm water treatment – performance and design recommendations

by IWA Publishing  (Jan. 29, 2014)

Three lamella settlers were monitored over a period of 4 years. The main objective was to determine removal efficiencies for total suspended solids and associated pollutants. For this purpose a new sampling method based on large volume solid samplers was developed allowing a detailed analysis of solids. With regard to total suspended solids the ...

Mumbai Refinery Mahaul (BPCL) API settlers

by DWT Group Oy  (May 26, 2011)

API Settlers DEWACO deployed a complete sludge removal system consisting of: 16 nos. Chain and Flight type sludge and scum collectors and 28 nos. Scum pipes . 3 nos. 21 x 2,5 3 nos. 21 x 2,5 2 nos. 18 x 4,6 3 nos. 18 x 6,1 5 nos. 18 x 6,1 Project completion: 2008 ...

Shall we upgrade one-dimensional secondary settler models used in WWTP simulators? – An assessment of model structure uncertainty and its propagation

by IWA Publishing  (Jan. 1, 2011)

In WWTP models, the accurate assessment of solids inventory in bioreactors equipped with solid-liquid separators, mostly described using one-dimensional (1-D) secondary settling tank (SST) models, is the most fundamental requirement of any calibration procedure. Scientific knowledge on characterising particulate organics in wastewater and on ...

Enhancement of settling tank capacity using a new type of tube settler

by IWA Publishing  (Sep. 1, 2010)

The effectiveness of a newly developed lamellar settler was confirmed by onsite experiments. The device had inclined parallel plates arranged in a vertical direction in a settling tank. This vertical arrangement method enables many more plates to be set compared to the conventional horizontal arrangement. As an original and distinctive innovation, ...

Inclined Plate Settlers to Treat Stormwater Solids

by Water Environment Federation (WEF)  (Oct. 22, 2006)

ABSTRACTIt has been well-documented that, in stormwater runoff, many of the problem pollutants are associated with the particulate fraction. Past characterization of urban runoff and source contributions has shown the following: (a) soil disturbance increased the TSS and turbidity in the runoff; and (b) correlations were observed between TSS and ...

Stormwater and lamella settlers: efficiency and reality

by IWA Publishing  (Feb. 1, 1999)

ABSTRACTTwo settling devices treating rainwater from urban drainage areas and equipped with secondary sludge treatment were monitored over a period exceeding one year. The two devices differ in their design and in the quantity and quality of effluents received. Full analyses over approximately 30 mean samples of the intake and discharge effluents ...

Fire in Tube Settlers Causes Extensive Damage

by American Water Works Association (AWWA)  (Nov. 1, 1984)

In 1983, the Washington Suburban Sanitary Commission experienced a fire involving tube settlers in a settling basin at the Patuxent Water Filtration Plant. The fire, which occurred in a section of the plant being rehabilitated by a construction company, started when tube settlers made of acrylo-nitrile-butadiene-styrene (ABS) were ignited by a ...

Column Settling Test and Tube Settling

by American Water Works Association (AWWA)  (Feb. 1, 1979)

Data from column settling tests may be used to design tube settling systems. If a safety factor of two is applied, the column settling curve may be used directly for tube settler design. The use of the parameter overflow rate computed from a formula proposed for tube settler design is validated. The conclusions from the experimental testing ...

Tubular Settlers - A Technical Review

by American Water Works Association (AWWA)  (Jun. 1, 1978)

The basic factors involved in tubular-settler design are discussed and specific parameters are given for typical system dimensions. Laminar flow conditions, residence time, flow velocity, and overflow rate are ...

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