A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Anaerobic biodegradation potential of photoprocessing wastewaters
ABSTRACT: The anaerobic biodegradation potential of photoprocessing effluents and their effect on the anaerobic digestion of biological sludge generated from the aerobic treatment of photoprocessing wastewaters were investigated. Simulated C‐41 photoprocessing wastewaters were subjected to an anaerobic toxicity test using the serum bottle technique. Unacclimated, anaerobic sludge inocula were used and the test solutions consisted of photoprocessing wastewaters and readily degradable organic substrates. Concentrations of photoeffluents considerably higher than those expected to reach municipal wastewater treatment plants initially depressed the production of methane, mainly because of competition between sulfate reducing and methanogenic bacteria. After prolonged incubation, methanogenesis recovered. Biological sludge generated by laboratory‐scale activated sludge reactors with and without photoeffluents was fed to anaerobic digesters without adverse effects. The digesters fed sludge from the aerobic treatment of photoeffluents achieved about 14% higher digestibility than did the digester fed with sludge never exposed to the photoeffluents. For photoeffluent levels expected to reach municipal wastewater treatment plants, no adverse effects on anaerobic digestion are expected.
Anaerobic biodegradation potential of photoprocessing wastewaters
ABSTRACT: The anaerobic biodegradation potential of photoprocessing effluents and their effect on the anaerobic digestion of biological sludge generated from the aerobic treatment of photoprocessing wastewaters were investigated. Simulated C‐41 photoprocessing wastewaters were subjected to an anaerobic toxicity test using the serum bottle technique. Unacclimated, anaerobic sludge inocula were used and the test solutions consisted of photoprocessing wastewaters and readily degradable organic substrates. Concentrations of photoeffluents considerably higher than those expected to reach municipal wastewater treatment plants initially depressed the production of methane, mainly because of competition between sulfate reducing and methanogenic bacteria. After prolonged incubation, methanogenesis recovered. Biological sludge generated by laboratory‐scale activated sludge reactors with and without photoeffluents was fed to anaerobic digesters without adverse effects. The digesters fed sludge from the aerobic treatment of photoeffluents achieved about 14% higher digestibility than did the digester fed with sludge never exposed to the photoeffluents. For photoeffluent levels expected to reach municipal wastewater treatment plants, no adverse effects on anaerobic digestion are expected.
Anaerobic biodegradation potential of photoprocessing wastewaters
Pavlostathis, Spyros G. (author) / Sridhar, K. (author)
Water Environment Research ; 66 ; 220-229
1994-05-01
10 pages
Article (Journal)
Electronic Resource
English
Anaerobic codigestion of agricultural industries' wastewaters
| British Library Conference Proceedings | 1996
Anaerobic Hybrid Treatment of Terephthalic Acid Wastewaters
| British Library Conference Proceedings | 1998
Assessment of the anaerobic biodegradation potential of MSW
| British Library Conference Proceedings | 2008
Psychrophilic anaerobic treatment of low strength wastewaters
| British Library Conference Proceedings | 1999