Occurrence, seasonal variation and removal efficiency of antibiotics and their metabolites in wastewater treatment plants, Jiulongjiang River Basin, South China

2015 ◽  
Vol 17 (1) ◽  
pp. 225-234 ◽  
Author(s):  
Han Zhang ◽  
Miaomiao Du ◽  
Hongyou Jiang ◽  
Dandan Zhang ◽  
Lifeng Lin ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Seasonal Variation ◽  
River Basin ◽  
Removal Efficiency ◽  
South China ◽  
Wastewater Treatment Plants ◽  
Jiulongjiang River

Wastewater treatment plants (WWTPs) are regarded as one of the most important sources of antibiotics in the environment.

INTEGRATED ASSESSMENT OF WASTEWATER TREATMENT PLANTS FOR SUSTAINABLE RIVER BASIN MANAGEMENT

2010 ◽  
Vol 9 (9) ◽  
pp. 1251-1258 ◽  
Author(s):  
George Barjoveanu ◽  
Claudia Cojocariu ◽  
Brindusa Robu ◽  
Carmen Teodosiu
Keyword(s):  
Wastewater Treatment ◽  
River Basin ◽  
Integrated Assessment ◽  
Wastewater Treatment Plants ◽  
River Basin Management ◽  
Basin Management

scholarly journals Investigation of pharmaceuticals in a conventional wastewater treatment plant: Removal efficiency, seasonal variation and impact of a nearby hospital

2021 ◽  
Vol 9 (4) ◽  
pp. 105548
Author(s):  
Lubertus Bijlsma ◽  
Elena Pitarch ◽  
Eddie Fonseca ◽  
María Ibáñez ◽  
Ana María Botero ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Seasonal Variation ◽  
Removal Efficiency ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Plant Removal ◽  
Conventional Wastewater Treatment

scholarly journals Removal efficiencies and risk assessment of endocrine-disrupting chemicals at two wastewater treatment plants in South China

2021 ◽  
Vol 225 ◽  
pp. 112758
Author(s):  
Hairong Liang ◽  
Jian Gong ◽  
Kairu Zhou ◽  
Langjing Deng ◽  
Jiaxin Chen ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Wastewater Treatment ◽  
South China ◽  
Wastewater Treatment Plants ◽  
Endocrine Disrupting Chemicals ◽  
Endocrine Disrupting ◽  
Removal Efficiencies

Abundance, morphology, and removal efficiency of microplastics in two wastewater treatment plants in Nanjing, China

2020 ◽  
Author(s):  
Fang Yuan ◽  
Han Zhao ◽  
Haibing Sun ◽  
Jinhui Zhao ◽  
Yongjun Sun
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Wastewater Treatment Plants

Small wastewater treatment plants in Flanders (Belgium): standard approach and experiences with constructed reed beds

2000 ◽  
Vol 41 (1) ◽  
pp. 57-63 ◽  
Author(s):  
S. Vandaele ◽  
C. Thoeye ◽  
B. Van Eygen ◽  
G. De Gueldre
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Pilot Scale ◽  
Surface Flow ◽  
Limiting Factor ◽  
Vertical Flow ◽  
Reed Beds ◽  
Reed Bed

In Flanders (Belgium) an estimated 15% of the population will never be connected to a central wastewater treatment plant (WWTP). Small WWTPs can be a valuable option. Aquafin bases the decision to build SWWTPs on a drainage area study. To realise an accelerated construction the process choice is made accordingly to a standard matrix, which represents the different technologies in function of the size and the effluent consents. A pilot scale constructed two-stage reed bed is used to optimise the concept of the reed beds. The concept consists of a primary clarifier, two parallel vertical flow reed beds followed by a sub-surface flow reed bed. The removal efficiency of organic pollutants is high (COD: 89%, BOD: 98%). Phosphorus removal is high at the start-up but diminishes throughout the testing period (from 100% to 71% retention after 7 months). Nitrogen removal amounts to 53% on average. Nitrification is complete in summer. Denitrification appears to be the limiting factor. In autumn leakage of nitrogen is assumed. Removal efficiency of pathogens amounts to almost 99%. Clogging forms a substantial constraint of the vertical flow reed bed. Problems appear to be related with presettlement, feed interval and geotextile.

scholarly journals Occurrence and Removal of Veterinary Antibiotics in Livestock Wastewater Treatment Plants, South Korea

Processes ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 720 ◽  
Author(s):  
Jin-Pil Kim ◽  
Dal Rae Jin ◽  
Wonseok Lee ◽  
Minhee Chae ◽  
Junwon Park
Keyword(s):  
Wastewater Treatment ◽  
South Korea ◽  
Removal Efficiency ◽  
Wastewater Treatment Plants ◽  
Batch Reactor ◽  
Veterinary Antibiotics ◽  
Livestock Wastewater ◽  
Treatment Processes ◽  
Removal Efficiencies ◽  
A2o Process

In this study, livestock wastewater treatment plants in South Korea were monitored to determine the characteristics of influent and effluent wastewater, containing four types of veterinary antibiotics (sulfamethazine, sulfathiazole, chlortetracycline, oxytetracycline), and the removal efficiencies of different treatment processes. Chlortetracycline had the highest average influent concentration (483.7 μg/L), followed by sulfamethazine (251.2 μg/L), sulfathiazole (230.8 μg/L) and oxytetracycline (25.7 μg/L), at five livestock wastewater treatment plants. Sulfathiazole had the highest average effluent concentration (28.2 μg/L), followed by sulfamethazine (20.8 μg/L) and chlortetracycline (11.5 μg/L), while no oxytetracycline was detected. For veterinary antibiotics in the wastewater, a removal efficiency of at least 90% was observed with five types of treatment processes, including a bio-ceramic sequencing batch reactor, liquid-phase flotation, membrane bioreactor, bioreactor plus ultrafiltration (BIOSUF) and bio best bacillus systems. Moreover, this study evaluated the removal efficiency via laboratory-scale experiments on the conventional contaminants, such as organic matter, nitrogen, phosphorus and veterinary antibiotics. This was done using the hydraulic retention time (HRT), under three temporal conditions (14 h, 18 h, 27 h), using the anaerobic–anoxic–oxic (A2O) process, in an attempt to assess the combined livestock wastewater treatment process where the livestock wastewater is treated until certain levels of water quality are achieved, and then the effluent is discharged to nearby sewage treatment plants for further treatment. The removal efficiencies of veterinary antibiotics, especially oxytetracycline and chlortetracycline, were 86.5–88.8% and 87.9–90.8%, respectively, exhibiting no significant differences under various HRT conditions. The removal efficiency of sulfamethazine was at least 20% higher at HRT = 27 h than at HRT = 14 h, indicating that sulfamethazine was efficiently removed in the A2O process with increased HRT. This study is expected to promote a comprehensive understanding of the behavior and removal of veterinary antibiotics in the livestock wastewater treatment plants of South Korea.

Fate of typical endocrine active compounds in full-scale wastewater treatment plants: Distribution, removal efficiency and potential risks

2020 ◽  
Vol 310 ◽  
pp. 123436 ◽  
Author(s):  
Jiashun Cao ◽  
Boming Fu ◽  
Teng Zhang ◽  
Yang Wu ◽  
Ziyan Zhou ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Wastewater Treatment Plants ◽  
Full Scale ◽  
Active Compounds ◽  
Potential Risks

scholarly journals The Use of Organic Coagulants in the Primary Precipitation Process at Wastewater Treatment Plants

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1650 ◽  
Author(s):  
Krzysztof Czerwionka ◽  
Anna Wilinska ◽  
Agnieszka Tuszynska
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Wastewater Treatment Plants ◽  
Renewable Energy Sources ◽  
Pollutant Removal ◽  
Treated Wastewater ◽  
Biological Nutrient Removal ◽  
Precipitation Process ◽  
Primary Precipitation

Measurements for determining the effect of chemically enhanced primary treatment (CEPT) on the efficiency of pollutant removal from wastewater were carried out using conventional inorganic coagulants PIX113 with polymer A110 (Kemipol, Police, Poland) and unconventional cationic organic coagulants Cofloc (Attana, Coalville, UK) C29510 (Kemipol, Police, Poland) and Sedifloc 575 (3F Chimica, Sandrigo, Italy). The average removal efficiency in the 2-h sedimentation process was 46%, 34%, 8%, 12% for the total suspended solids, organic matter (COD), total nitrogen, and total phosphorus, respectively. The use of organic coagulants contributed to 14–81% increase of pollutant removal efficiency. Substantial discrepancies in biological nutrient removal processes were not discovered in two-phase (anaerobic-anoxic) experiments without and with the addition of the organic coagulants. The increase in organic matter removal efficiency as a result of the CEPT process may contribute to a 65–80% increase in biogas production. The conducted research confirms the possibility of using organic coagulants in the primary precipitation process in wastewater treatment plants (WWTPs) in accordance with the principles of maximum energy recovery, thereby promoting renewable energy sources. Additionally, organic coagulants, as opposed to inorganic ones, do not cause a significant increase of chloride and sulfate ion concentrations, which facilitates the use of treated wastewater in the water reuse systems, such as irrigation of agricultural crops.

scholarly journals Rethinking micropollutant removal assessment methods for wastewater treatment plants – how to get more robust data?

2017 ◽  
Vol 75 (12) ◽  
pp. 2964-2972 ◽  
Author(s):  
Jean-Marc Choubert ◽  
Samuel Martin Ruel ◽  
Cécile Miege ◽  
Marina Coquery
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Suspended Solids ◽  
Wastewater Treatment Plants ◽  
Sampling Strategy ◽  
Sampling Uncertainty ◽  
Limit Of Quantification ◽  
Sources Of Uncertainty ◽  
Micropollutant Removal ◽  
The Impact

This paper covers the pitfalls, recommendations and a new methodology for assessing micropollutant removal efficiencies in wastewater treatment plants. The proposed calculation rules take into account the limit of quantification and the analytical and sampling uncertainty of measured concentrations. We identified six cases for which a removal efficiency value is reliable and four other cases where result is highly variable (uncertain) due to very low or unquantified concentrations in effluent or when the influent–effluent concentrations differential is below the measurement uncertainty. The influence of the proposed calculation rules on removal efficiency values was scrutinized using actual results from a research project. The paper arrives at detailed recommendations for limiting the impact of other sources of uncertainty during sampling (sampling strategy, cleaning and field blank), chemical analyses (suspended solids and sludge) and data processing according to the targeted objectives.

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