Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Comparison of Dissolved‐Organic‐Carbon Residuals from Air‐ and Pure‐Oxygen‐Activated‐Sludge Sequencing‐Batch Reactors
Literature shows that full‐scale pure‐oxygen activated sludge (O 2‐AS) wastewater treatment plants (WWTPs) generate effluents with higher dissolved‐organic carbon (DOC) concentrations and larger high‐molecular‐weight fractions compared to air‐activated‐sludge (Air‐AS) WWTP effluents. The purpose of this paper was to evaluate how gas supplied (air vs. pure oxygen) to sequencing‐batch reactors affected DOC transformations. The main conclusions of this paper are (a) O 2‐AS effluent DOC is more refractory than air‐AS effluent DOC; and (b) O 2‐AS systems may have higher five‐day biochemical oxygen demand removals than air‐AS systems; however, in terms of COD and DOC removal, air‐AS systems are better than O 2‐AS systems. Analysis of a database from side‐by‐side O 2‐ and air‐AS pilot tests from literature supported these observations.
Comparison of Dissolved‐Organic‐Carbon Residuals from Air‐ and Pure‐Oxygen‐Activated‐Sludge Sequencing‐Batch Reactors
Literature shows that full‐scale pure‐oxygen activated sludge (O 2‐AS) wastewater treatment plants (WWTPs) generate effluents with higher dissolved‐organic carbon (DOC) concentrations and larger high‐molecular‐weight fractions compared to air‐activated‐sludge (Air‐AS) WWTP effluents. The purpose of this paper was to evaluate how gas supplied (air vs. pure oxygen) to sequencing‐batch reactors affected DOC transformations. The main conclusions of this paper are (a) O 2‐AS effluent DOC is more refractory than air‐AS effluent DOC; and (b) O 2‐AS systems may have higher five‐day biochemical oxygen demand removals than air‐AS systems; however, in terms of COD and DOC removal, air‐AS systems are better than O 2‐AS systems. Analysis of a database from side‐by‐side O 2‐ and air‐AS pilot tests from literature supported these observations.
Comparison of Dissolved‐Organic‐Carbon Residuals from Air‐ and Pure‐Oxygen‐Activated‐Sludge Sequencing‐Batch Reactors
Esparza‐Soto, Mario (Autor:in) / Fox, Peter (Autor:in) / Westerhoff, Paul (Autor:in)
Water Environment Research ; 78 ; 321-329
01.03.2006
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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