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Antibiotics in WWTP discharge into the Chaobai River, Beijing

Zhang C., Wang L., Gao X., He X.

Archives of Environmental Protection

2016

Vol. 42, no. 4

48--57

22 representative antibiotics, including 8 quinolones (QNs), 9 sulfonamides (SAs), and 5 macrolides (MCs) were selected to investigate their occurrence and removal efficiencies in a Wastewater Treatment Plant (WWTP) and their distribution in the receiving water of the Chaobai River in Beijing, China. Water quality monitoring was performed in an integrated way at different selected points in the WWTP to explore the potential mechanism of antibiotics removal during wastewater treatment. Water quality of the Chaobai River wa s also analyzed to examine environmental distribution in a river ecosystem. The results showed that within all the 22 compounds examined, 10 antibiotics were quantifi ed in wastewater influent, 10 in effluent, and 7 in river. Sulfadiazine (SDZ, 396 ng/L) and Sulfamethazine (SMZ, 382 ng/L) were the dominating antibiotics in the influent. Both the conventional treatment and advanced Biological Aerated Filter (BAF) system was important for the removal of antibiotics from the wastewater. And the concentrations of selected antibiotics were ranged from 0–41.8 ng/L in the effluent-receiving river. Despite the fact that the concentrations were reduced more than 50% compared to effluent concentrations, WWTP discharge was still regarded as a dominant point-source input of antibiotics into the Chaobai River.

Fate of PPCPs in sequencing batch reactor (SBR)

Żabczyński S., Felis E., Surmacz-Górska J., Miksch K., Ternes T.

Architecture Civil Engineering Environment

2009

Vol. 2, no. 3

127-132

In this study, the main objective was to investigate the possibilities of the removal PPCPs (pharmaceuticals and personal care products) in the SBRs at the sludge ages of 20 and 10 days and at the two different temperatures 10°C and 20°C. The pharmaceuticals and personal care products can appear in the aquatic environment in several ways: via urine and faeces, by direct use of manure as fertilizer and also by inappropriate storage of the mentioned products. The obtained results showed, that the highest removal was gained for acidic compounds (ibuprofen, ketoprofen and naproxen). At the sludge age 20 d ibuprofen was degraded in above 90%, but at the sludge age 10 d, it was removed at the same level only at the temperature of 20°C. Moreover, it can be stated, that removal of some PPCPs shows strong correlation with sludge age. The following compounds showed higher removal at the longer sludge age: iopromide, DAMI, ibuprofen, bezafibrate, ketoprofen and pentoxifyllin. Furthermore, at the sludge age 10 d the emphatic correlation temperature – removal is observed for ibuprofen, ketoprofen and bezafibrate.

Głównym celem pracy było przeprowadzenie badań dotyczących możliwości usuwania substancji farmaceutycznych ze ścieków przy użyciu reaktora typu SBR o różnych wiekach osadu czynnego (10 i 20 d) w temperaturze 10°C i 20°C. Największą podatność na degradację uzyskano dla ibuprofenu, ketoprofenu i naproxenu. Przy wieku osadu równym 20 d usunięcie ibuprofenu przekraczało 90% w obu badanych temperaturach, natomiast przy wieku osadu równym 10 d, ten sam poziom usunięcia otrzymano w temperaturze 20°C. Stwierdzono, że usunięcie niektórych badanych substancji farmaceutycznych (iopromid, DAMI, ibuprofen, bezafibrat, ketoprofen i pentoxifyllina) jest zależne od wieku osadu. Dodatkowo, przy wieku osadu 10 d wykazano zależność między eliminacją substancji farmaceutycznych (ibuprofen, ketoprofen, i bezafibrat) a temperaturą prowadzenia procesu.