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.

scholarly journals Fate of selected pharmaceuticals and personal care products after secondary wastewater treatment processes in Taiwan

2010 ◽  
Vol 62 (10) ◽  
pp. 2450-2458 ◽  
Author(s):  
Angela Yu-Chen Lin ◽  
Cheng-Fan Lin ◽  
Yu-Ting Tsai ◽  
Hank Hui-Hsiang Lin ◽  
Jie Chen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
High Performance ◽  
Wastewater Treatment Plants ◽  
Solid Phase ◽  
Personal Care Products ◽  
Personal Care ◽  
Matrix Interference ◽  
Treatment Processes ◽  
Liquid Chromatography Tandem Mass ◽  
Removal Efficiencies

Pharmaceuticals and personal care products (PPCPs) constitute a class of chemicals of emerging concern due to the potential risks they pose to organisms and the environment, even at low concentrations (ng/L). Recent studies have found that PPCPs are not efficiently removed in secondary wastewater treatment plants (WWTPs). This study has: (1) simultaneously investigated the occurrence of sixty-one PPCPs using solid phase extraction and high-performance liquid chromatography-tandem mass spectrometry, (2) evaluated removal efficiencies of target PPCPs in six WWTPs that discharge effluents into major Taiwanese rivers, and lastly (3) examined matrix interference during analysis of target PPCPs in water samples. The twenty target PPCPs were chosen for their high detection frequencies, high influent concentrations, and stability during wastewater treatment processes. Caffeine and acetaminophen were detected at the highest concentrations (as high as 24,467 and 33,400 ng/L) and were effectively removed (both >96%); other PPCPs were detected in the high ng/L range but were not effectively removed. Matrix interference (by ion suppression or enhancement) during the analysis resulted in underestimation of the removal efficiencies of erythromycin-H2O, cefazolin, clarithromycin, ibuprofen, diclofenac, clofibric acid and gemfibrozil.

scholarly journals Analysis of halogenated flame retardants in Canadian wastewater treatment plants using gas chromatography–tandem mass spectrometry (GC-MS/MS)

2018 ◽  
Vol 53 (4) ◽  
pp. 167-180 ◽  
Author(s):  
Meera Shanmuganathan ◽  
Zifeng Zhang ◽  
Ed Sverko ◽  
Rachel Brymer ◽  
Biban Gill ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Flame Retardants ◽  
Wastewater Treatment Plants ◽  
Chemical Properties ◽  
Brominated Flame Retardants ◽  
Dechlorane Plus ◽  
Treatment Processes ◽  
Chromatography Tandem Mass Spectrometry ◽  
Polybrominated Diphenylethers ◽  
Removal Efficiencies

Abstract An investigation of brominated flame retardants (BFRs), polybrominated diphenylethers (PBDEs), and chlorinated flame retardants was conducted in samples from Canadian wastewater treatment plants (WWTPs). The penta-BDE mixture and deca-BDE were most commonly detected. Median removal efficiencies of PBDEs by WWTPs were 71% to 99% and higher concentrations of PBDEs were found in influent samples in summer, compared to winter. Three novel brominated flame retardants (nBFRs) including 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE), 2-ethylhexyl-2,3,4,5-tetrabromobenzoate (EHTeBB or TBB), and bis(2-ethyl-1-hexyl)tetrabromophthalate (BEHTBP or TBPH) were detected in greater than 80% of influents and biosolids. Median removal efficiencies were 45% to 99% for BTBPE, 63% to 99% for TBB, and 88% to 99% for TBPH. Detection of total dechlorane plus ((DP) syn and anti) was greater than 90% in both wastewater and biosolids samples. However, median removal efficiencies were between 51% and 66% for total DP. Overall, PBDEs were effectively removed via different treatment processes, while BTBPE, TBB, and DP exhibited lower removal rates, which could be due to their physical chemical properties.

Occurrence and efficacy of bisphenol A (BPA) treatment in selected municipal wastewater treatment plants, Bangkok, Thailand

2015 ◽  
Vol 72 (3) ◽  
pp. 463-471 ◽  
Author(s):  
Intira Pookpoosa ◽  
Ranjna Jindal ◽  
Daisy Morknoy ◽  
Kraichat Tantrakarnapa
Keyword(s):  
Wastewater Treatment ◽  
Bisphenol A ◽  
Activated Sludge ◽  
Removal Efficiency ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Nutrients Removal ◽  
Municipal Wastewater Treatment ◽  
Treatment Processes ◽  
Municipal Wastewater Treatment Plants

Investigations were carried out on the occurrence and fate of bisphenol A (BPA) in five wastewater treatment plants (WWTPs) in Bangkok, namely, Rattanakosin, Chong Non Si, Din Daeng (DD), Nong Khaem and Thungkru (TK) during three sampling events between October 2013 and February 2014. Based on the results, the influent and effluent BPA concentrations ranged between 128.5 ng/L and 606.0 ng/L; and 38.7 ng/L and 270.5 ng/L, respectively. The effluent BPA concentrations of most of the five WWTPs were lower than the influent levels. TK had the highest removal efficiency in October 2013 (80.4%) and December 2013 (90.7%) and the second highest in February 2014 (69.2%). DD had the highest removal efficiency in February 2014 (91.8%). The treatment processes employed at TK and DD were vertical loop reactor activated sludge process and activated sludge with nutrients removal, respectively. Thus, these processes seem to be good for BPA degradation.

scholarly journals Characterization of Five Portuguese Wastewater Treatment Plants: Removal Efficiency of Pharmaceutical Active Compounds through Conventional Treatment Processes and Environmental Risk

2021 ◽  
Vol 11 (16) ◽  
pp. 7388
Author(s):  
Sofia Silva ◽  
Vitor Vale Cardoso ◽  
Lúcia Duarte ◽  
Rui Neves Carneiro ◽  
Cristina Maria Martins Almeida
Keyword(s):  
Wastewater Treatment ◽  
Surface Waters ◽  
Wastewater Treatment Plants ◽  
Solid Phase ◽  
Aquatic Organisms ◽  
Ultra Performance Liquid Chromatography ◽  
Mass Detection ◽  
Active Compounds ◽  
Treatment Processes ◽  
Removal Efficiencies

Due to the high consumption and incorrect disposal of pharmaceutical active compounds (PhACs), they are recognized as contaminants of emerging concern. Wastewater treatment plants (WWTPs) may be inefficient in removing PhACs, therefore discharging them into surface waters. The removal efficiencies of five WWTPs located in the south of Portugal (Alentejo) were evaluated in 2020. Twenty-six PhACs were analyzed in wastewater influents, effluents, and surface waters, upstream and downstream of the WWTPs by solid-phase extraction (SPE) and ultra-performance liquid chromatography coupled with tandem mass detection (UPLC–MS/MS). The most representative PhACs in influents were acetaminophen, caffeine, naproxen, ibuprofen, and diclofenac with minimum-maximum concentrations of 49–225 µg/L, 26–46 µg/L, 5.9–13 µg/L, 5.2–22 µg/L, and 1.3–2.5 µg/L, respectively. For effluents, it was acetaminophen, caffeine, and diclofenac with minimum-maximum concentrations of 0.054–7.8 µg/L, 0.084–4.8 µg/L, and 0.28–3.3 µg/L, respectively. The highest removal efficiencies were observed for acetaminophen, sulfadiazine, cortisone, testosterone, metoprolol, and propranolol (100%). The lowest removal efficiencies were observed for carbamazepine (2.7%) and diclofenac (−13.2%). The risk quotient of sulfamethoxazole and diclofenac were higher than 1 for receiving waters, indicating they probably pose high risks to aquatic organisms.

scholarly journals Mathematical Description of Sequencing Batch Reactor operation of treatment of wastewater with low concentration of organic contaminations

2020 ◽  
Vol 180 ◽  
pp. 04017
Author(s):  
Elena Gogina
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Sequencing Batch Reactor ◽  
Wastewater Treatment Plants ◽  
Batch Reactor ◽  
Reactor Operation ◽  
Organic Contamination ◽  
Low Concentration ◽  
Treatment Processes ◽  
Biological Treatment System

The paper is oriented towards the study of certain small wastewater-treatment plants, in particular the study of some treatment processes where the wastewater has low concentration of organic contamination. The primary goal of this paper was to obtain the characteristics of a biological treatment system which comply with the laws of enzyme kinetics. The design formulas of the Sequencing Batch Reactor with an inflow of wastewater and low concentration of organic contaminations has been obtained.

The Operation and Maintenance of Small Scale Wastewater Treatment Plants

1986 ◽  
Vol 18 (7-8) ◽  
pp. 313-318
Author(s):  
M. Takahashi
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Batch Reactor ◽  
Plug Flow ◽  
Small Scale ◽  
Oxidation Ditch ◽  
Excess Sludge ◽  
Treatment Processes ◽  
Operation And Maintenance ◽  
Methods Of Operation

Three wastewater treatment processes (oxidation ditch, extended aeration (plug flow type) and activated sludge batch reactor) which are considered to be suitable for small scale wastewater treatment plants were tested at a pilot plant, or using existing facilities to examine their methods of operation and maintenance. The objectives of this study were to determine production of excess sludge, a method of setting aeration intensity, and a method of controlling returned sludge.

Occurrence and removal efficiency of six polycyclic aromatic hydrocarbons in different wastewater treatment plants

2013 ◽  
Vol 68 (8) ◽  
pp. 1844-1851 ◽  
Author(s):  
Manli Wu ◽  
Lili Wang ◽  
Huining Xu ◽  
Yi Ding
Keyword(s):  
Wastewater Treatment ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Removal Efficiency ◽  
Aromatic Hydrocarbons ◽  
Biological Treatment ◽  
Wastewater Treatment Plants ◽  
Ultra Performance Liquid Chromatography ◽  
Wastewater Treatment Process ◽  
Polycyclic Aromatic ◽  
Removal Efficiencies

Occurrence and removal efficiency of six polycyclic aromatic hydrocarbons (PAHs) (fluoranthene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, benzo[ghi]perylene and indeno[1,2,3-cd]pyrene) in wastewater were monitored at different treatment processes in three wastewater treatment plants (WWTPs) by using ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Chromatographic separation was performed on a Waters Acquity UPLC BEHC18 column (1.7 μm, 2.1 mm × 50 mm). A 0.2 μm precolumn filter was used to protect the analytical column. The result indicated that (1) the total concentrations of six PAHs were 427, 318, and 220 ng L–1 in the influent of three wastewater treatment plants, respectively. Among six PAHs, the content of fluoranthene was the highest, accounting for 62–66% of total PAHs. (2) Throughout the wastewater treatment process, different treatment units exhibited different removal efficiencies for six PAHs. Biological treatment stage and aerated grit chamber appeared to be necessary for effective removal of six PAHs. The removal efficiencies of six PAHs were 73–83% at biological treatment units, and 24–56% at the aerated grit stage, respectively. The final sedimentation and disinfection for PAH removal was minor.

Removal Efficiencies of Microorganisms in Wastewater Treatment Processes

1993 ◽  
Vol 28 (7) ◽  
pp. 55-61 ◽  
Author(s):  
Tsuyoshi Hirata ◽  
Kiyoshi Kawamura ◽  
Kazuyoshi Yano ◽  
Mitsumi Kaneko ◽  
Takeo Moniwa ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Treatment Unit ◽  
Total Coliforms ◽  
Unit Process ◽  
Treatment Processes ◽  
Indicator Microorganism ◽  
Removal Efficiencies ◽  
Almost All ◽  
Microorganism Removal

The removal characteristics of indigenous microorganisms in wastewater treatment unit processes were studied at five operating wastewater treatment plants. The removal efficiencies of the selected microorganisms in each unit process were dependent upon not only the systems but also the kinds of microorganisms. In almost all processes, the removal efficiencies of total coliforms were similar to or higher than those of Clostridium perfringens except for filtration processes. In the additional survey, focussed on the comparison of removal efficiencies of total coliforms, Cl. perfringens and coliphages, little difference was found between CL perfringens and coliphages. From these results, it may be suggested that CL Perfringens is an effective indicator microorganism for evaluating microorganism removal in wastewater treatment processes and systems.

Experience from 10 Years Advanced Wastewater Treatment – Technology and Results

1982 ◽  
Vol 14 (1-2) ◽  
pp. 121-133
Author(s):  
C Forsberg ◽  
B Hawerman ◽  
B Hultman
Keyword(s):  
Wastewater Treatment ◽  
Urban Population ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Municipal Wastewater Treatment ◽  
Treatment Technology ◽  
Removal Efficiencies ◽  
Municipal Wastewater Treatment Plants ◽  
Operational Modes ◽  
Polluted Waters

Experience from advanced municipal wastewater treatment plants and recovery of polluted waters are described for the last ten years in Sweden. Except in municipalities with large recipients, the urban population is served by treatment plants with combined biological and chemical treatment. Most of these plants are post-precipitation plants. Several modified operational modes have been developed in order to improve the removal efficiencies of pollutants and to reduce the costs. Results are presented on the recovery of specially investigated lakes with a lowered supply of total phosphorus and organic matter.

Modelling the performance of anaerobic wastewater stabilization ponds

1995 ◽  
Vol 31 (12) ◽  
pp. 171-183 ◽  
Author(s):  
M. M. Saqqar ◽  
M. B. Pescod
Keyword(s):  
Wastewater Treatment ◽  
Water Temperature ◽  
Removal Efficiency ◽  
Wastewater Treatment Plant ◽  
Suspended Solids ◽  
Treatment Plant ◽  
Pond Water ◽  
Removal Efficiencies ◽  
Wastewater Stabilization Ponds ◽  
Raw Wastewater

The performance of the primary anaerobic pond at the Alsamra Wastewater Treatment Plant in Jordan was monitored over 48 months. Overall averages for the removal efficiencies of BOD5, COD and suspended solids were 53%, 53% and 74%, respectively. An improvement in removal efficiency with increase in pond water temperature was demonstrated. A model, which takes into account the variability of raw wastewater at different locations, has been developed to describe the performance of a primary anaerobic pond in terms of a settleability ratio for the raw wastewater. The model has been verified by illustrating the high correlation between actual and predicted pond performance.

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