Suitability of ozone pre-treatment for amoxicillin wastewater.
Water Sci Technol
; 68(11): 2492-6, 2013.
Article
in En
| MEDLINE
| ID: mdl-24334901
ABSTRACT
This study deals with the ozonation of amoxicillin in real pharmaceutical wastewater and its efficacy as a pre-treatment, prior to biological degradation by a mixed culture of bacteria in a sequencing batch reactor (SBR). An ozone utilization of 0.27 g/g-COD (chemical oxygen demand) lowered the pH of the wastewater to 6.6, reduced the specific ultraviolet absorption by 43% and increased the biochemical oxygen demand (BOD) concentration by 37%. The BODCOD ratio became equal to 0.89, making the ozonated wastewater seemingly suitable for biological treatment; however, when the ozonated effluent was fed to the SBR, the reactor performance degraded, an effect which was attributed to ozonation by-products. In conclusion, ozonation might not be a suitable pre-treatment for pharmaceutical wastewater containing amoxicillin, and biotreatment with properly acclimated biomass may be a better option for treatment of such pharmaceutical wastewater.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Ozone
/
Water Pollutants, Chemical
/
Water Purification
/
Amoxicillin
Type of study:
Evaluation_studies
Language:
En
Journal:
Water Sci Technol
Journal subject:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Year:
2013
Document type:
Article