clarifier depth Articles

  • Primary clarification evaluation and optimization study

    This report describes the evaluation and optimization of primary clarifiers at the San Jose/Santa Clara Water Pollution Control Plant. Part 1 of this report examines the individual effect of the concentration of non-settleable solids, detention time, clarifier depth, sludge blanket level, and design feature of the clarifier on primary effluent quality and removal efficiency. Part 2 of this report ...


    By Entech Design, Inc.

  • WWTP Sludge reduction case study

    Introduction The City of Spring Valley, IL was seeking bioaugmentation to reduce the economic burden of sludge dredging and disposal and to evaluate the possibility of restoring the microbiological activity in the lagoon. The lagoon was flooded several times from the near-by Illinois River, which created different strata of inorganic silt/organic sludge and densely packed sludge at the ...

  • Characterizing shallow secondary clarifier performance where conventional flux theory over-estimates allowable solids loading rate

    The performance characteristics of relatively shallow (3.3 and 3.7 m sidewater depth in 30.5 m diameter) activated sludge secondary clarifiers were extensively evaluated during a 2-year testing program at the City of Akron Water Reclamation Facility (WRF), Ohio, USA. Testing included hydraulic and solids loading stress tests, and measurement of sludge characteristics (zone settling velocity ...


    By IWA Publishing

  • Rectangular vs. Circular Clarifiers: Which is better?

    Both rectangular and circular configurations have been commonly used in clarifier basins. The relative merits of the two have been discussed at length for decades. Historically, the selection of rectangular versus circular clarifiers has been based on past experience and the preference of the design engineer or design company. Initial wastewater treatment plant designs in the United States were ...


    By Brentwood Industries, Inc.

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