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Title of Journal: Water Sci Technol

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Abbravation: Water Science and Technology

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IWA Publishing

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DOI

10.1016/0166-0462(84)90031-0

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ISSN

0273-1223

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The influence of currents on circular secondary cl

Authors: Deininger Andrea Günthert Frank W Wilderer Peter A
Publish Date: 1996/08/01
Volume: 34, Issue: 3-4, Pages: 405-412
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Abstract

Density currents in the deeper zones of clarifiers and currents in the clear water zone have a significant influence on clarifier performance Measurements of flow velocity profiles were conducted in fullscale horizontally flown circular secondary clarifiers Relations between the hydraulic load and the development of density currents could be detected Those patterns are not taken into account in current design procedures Stationary design approaches are mainly based on the overflow rate Novel design methods based on the dynamic behavior of flow and density distribution in clarifiers are needed in order to improve the efficacy of wastewater treatment systems

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Other Papers In This Journal:
  1. Volatile organic compounds (VOC) at some sewage treatment plants in Poland
  2. Detection of F+ bacteriophage in large volumes of water by a membrane filter method (MFM)
  3. Estimation of the fate of microbial water quality contaminants in a South African river
  4. Removal of PCR inhibiting substances in sewage sludge amended soil
  5. A newly isolated fungus participates in the corrosion of concrete sewer pipes
  6. Chemical perception and behavioral response of freshwater fish to 2-methylisoborneol
  7. Use of wastewater for crop production under arid and saline conditions: yield and hygienic quality of the crop and soil contaminations
  8. DAF treatment of a reservoir water supply: comparison with in-line direct filtration and control of organic matter
  9. Multiple interactions in riverine biofilms - surfactant adsorption, bacterial attachment and biodegradation
  10. Treatment of primary-settled urban sewage in pilot-scale vertical flow wetland filters: comparison of four emergent macrophyte species over a 12 month period
  11. Wastewater treatment by stabilization pond: Marrakesh experiment
  12. Methanogenic activity and performance of UASB, DSFF and USFF reactors
  13. Challenges for the development of advanced constructed wetlands technology
  14. Transition of a lake to turbid state six years after biomanipulation: mechanisms and pathways
  15. Nonlinear and set-point control of the dissolved oxygen concentration in an activated sludge process
  16. Treatment of gypsum waste in a two stage anaerobic reactor
  17. Evaluation of serratia marcescens bacteriophage as a tracer and a model for virus removal in waste stabilisation ponds
  18. Vulnerability to diffuse pollution and average nitrate contamination of european soils and groundwater
  19. Case studies on preliminary treatment facilities at marine outfalls
  20. Methods for studying dissolved oxygen levels in coastal and estuarine waters receiving combined sewer overflows
  21. The practical use of wastewater characterisation in design
  22. Efficacy of a combined system of copper and silver and free chlorine for inactivation of Naegleria fowleri amoebas in water
  23. On the modelling of the dynamic propagation of biological components in the secondary clarifier
  24. Application of experimental research methodology to the study of nitrification in mixed culture
  25. Preliminary uncertainty analysis – a prerequisite for assessing the predictive uncertainty of hydrologic models
  26. Evaluation of the WHO nematode egg guidelines for restricted and unrestricted irrigation
  27. Principles and applications of dissolved air flotation
  28. Complete anaerobic digestion of activated sludge by combining membrane separation and alkaline heat post-treatment
  29. Dynamic simulation of sludge blanket movements in a full-scale rectangular sedimentation basin
  30. Rational design of packed saturators
  31. Towards managing catchment water utilisation for the Lake St Lucia ecosystem
  32. Bioelements and heavy metals in dry and wet depositions at some localities in the morava river basin
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