Denitrification of coking wastewater with micro-electrolysis

“…1. It could be seen that the concentration of NH 3 -N in influent was about 600 and increased to about 1,200 mg L −1 in effluent, which indicated that the nitrogen groups of penicillin G might be destroyed by ME [43]. Also, this result revealed that most penicillin G in the wastewater was removed or converted.…”

Section: Treatment Effect Of Mementioning

confidence: 90%

Utilization of micro-electrolysis, up-flow anaerobic sludge bed, anoxic/oxic-activated sludge process, and biological aerated filter in penicillin G wastewater treatment

et al. 2014

Desalination and Water Treatment

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A B S T R A C TSystem which included micro-electrolysis (ME), up-flow anaerobic sludge bed (UASB), anoxic/oxic (A/O) activated sludge process and biological aerated filter (BAF) were investigated in penicillin G-processing wastewater treatment. The main quality of the wastewater was shown as follows: chemical oxygen demand (CODcr) of 1,4507-1,5280 mg L −1 , ammonium nitrogen (NH 3 -N) of 598-826 mg L −1 , suspended solid of 1,850-2,190 mg L −1 , and pH of 3.5-5.2. Moreover, penicillin G residue in the wastewater was 130-150 mg L −1 . ME was utilized as the pretreatment method, UASB and A/O process were designed for the secondary treatment, and BAF was used as the advanced treatment. The results revealed that biodegradability of the wastewater could be effectively improved by ME, and most of CODcr and NH 3 -N in the wastewater could be removed by UASB and A/O process, and the residual COD and NH 3 -N could be removed by BAF. The average COD and NH 3 -N in final effluent was about 275.3 and 19.8 mg L −1 , respectively, and the treated wastewater quality reached the requirement of the national discharge standards (wastewater quality standards for discharging into municipal sewer pipelines, China, COD ≤ 300 mg L −1 , NH 3 -N ≤ 25 mg L −1 in C standard). Especially, about 80% of penicillin G residue in the wastewater could be removed or converted by ME reactor, and the wastewater could be effectively deposed in this system.

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“…ME has been widely used in refractory wastewater treatment, including pharmacy wastewater, steel pickling waste liquor, palm oil mill wastewater, heavy metal wastewater, ionic liquids wastewater, coking wastewater, antibiotic metronidazole wastewater, and dye wastewater . The ME reactor has been shown to remove or reduce the concentration of refractory organics in wastewater and enhance its biodegradability .…”

Section: Introductionmentioning

confidence: 99%

“…Hence, a pilot scale system consisting of micro-electrolysis (ME), an expanded granular sludge bed (EGSB) and anoxic/oxic(A/O) reactors was designed in this study to investigate the effect of operating conditions on the removal of tetracycline antibiotics and other contaminants. ME has been widely used in refractory wastewater treatment, 21 including pharmacy wastewater, 22 steel pickling waste liquor, 23 palm oil mill wastewater, 24 heavy metal wastewater, 25 ionic liquids wastewater, 26 coking wastewater, 27,28 antibiotic metronidazole wastewater, 29 and dye wastewater. 30,31 The ME reactor has been shown to remove or reduce the concentration of refractory organics in wastewater and enhance its biodegradability.…”

Section: Introductionmentioning

confidence: 99%

Performance of a coupled micro-electrolysis, anaerobic and aerobic system for oxytetracycline (OTC) production wastewater treatment

Xi³

et al. 2015

J. Chem. Technol. Biotechnol.

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Denitrification of coking wastewater with micro-electrolysis

Cited by 24 publications

References 3 publications

Treatment of dinitrodiazophenol production wastewater by Fe/C and Fe/Cu internal electrolysis and the COD removal kinetics

Treatment of dinitrodiazophenol production wastewater by Fe/C and Fe/Cu internal electrolysis and the COD removal kinetics

Utilization of micro-electrolysis, up-flow anaerobic sludge bed, anoxic/oxic-activated sludge process, and biological aerated filter in penicillin G wastewater treatment

Performance of a coupled micro-electrolysis, anaerobic and aerobic system for oxytetracycline (OTC) production wastewater treatment

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