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Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation
Published on: July 13, 2012
Effect of organic loading on rotating biological contactor efficiency.
1University of Mosul, College of Engineering, Civil Engineering Department, Mosul, Iraq. dawodkoss@yahoo.com
Summary
Organic loading rate significantly impacts rotating biological contactor (RBC) performance and effluent quality. Optimizing organic loading is crucial for effective wastewater treatment and suspended solids control in RBC systems.
Area of Science:
- Environmental Engineering
- Wastewater Treatment Technologies
- Biological Treatment Processes
Background:
- Rotating biological contactors (RBCs) are widely used in wastewater treatment.
- Organic loading rate is a critical design and operational parameter for RBCs.
- Comparing RBC performance with other systems like activated sludge requires standardized parameters.
Purpose of the Study:
- To emphasize the significance of organic loading as a control and design parameter for RBCs.
- To analyze the relationship between organic loading and RBC system efficiency.
- To determine optimal organic loading rates for achieving specific effluent quality standards and nitrification.
Main Methods:
- The study focused on analyzing the impact of organic loading on COD removal efficiency in RBC systems.
- Investigated the correlation between organic loading and suspended solids concentration within the RBC basin.
- Evaluated the influence of organic loading on effluent quality parameters (BOD, COD) and nitrification.
Main Results:
- COD removal in RBC systems is directly dependent on the organic loading rate.
- Higher organic loadings correlate with increased suspended solids concentration in the RBC basin.
- Optimal organic loading rates were identified for achieving target effluent BOD (
Conclusions:
- Organic loading is a key factor influencing COD removal and suspended solids in RBCs.
- Specific organic loading rates (22 gBOD/m(2).d and 65 gCOD/m(2).d) are recommended for achieving desired effluent quality.
- For nitrification, RBCs should operate at organic loadings of 10 g/m(2).d or less with hydraulic loading below 40 L/m(2).d.
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