KP010 Occurrence of antibiotics in hospital wastewater, municipal wastewater and surface waters

2003 ◽  
Vol 293 ◽  
pp. 300
Keyword(s):  
Surface Waters ◽  
Municipal Wastewater ◽  
Hospital Wastewater

Intrinsic kinetics for fixed bed bioreactor in hospital wastewater treatment

2016 ◽  
Vol 74 (8) ◽  
pp. 1992-1998 ◽  
Author(s):  
Mehrdad Farrokhi ◽  
Mostafa Mahdavianpour ◽  
Mehdi Shirzad-Siboni ◽  
Mohammad Naimi-Joubani ◽  
Hamzeh Ali Jamali
Keyword(s):  
Municipal Wastewater ◽  
High Surface ◽  
High Surface Area ◽  
Fixed Bed ◽  
Oxygen Demand ◽  
Hospital Wastewater ◽  
Rice Husks ◽  
Kinetics Parameters ◽  
Fixed Media ◽  
Fixed Bed Bioreactor

Variation in hospital wastewater (HWW) pollutants and differences with municipal wastewater (MWW), make the use of biokinetic coefficients obtained from activated sludge in the MWW treatment unprofitable for designing, modeling and evaluation of biological processes for HWW treatment. Since this study was conducted to evaluate the performance and biokinetic coefficients of a fixed bed bioreactor (FBBR) using rice husks as fixed media in HWW treatment, a new modified method was also proposed for biokinetic estimation in FBBR processes. For these purposes, five hydraulic retention times along with five sludge retention times were introduced to a pilot setup and the required data were attained. The performance process for chemical oxygen demand (COD) removal was significant (87.8–97.5%) in different conditions. The values of biokinetic coefficients k, Ks, Y and Kd were obtained as 2.42 (day−1), 55.5 (mgCOD/L), 0.2929 (mgBiomass/mgCOD) and 0.0164 (day−1), respectively. The rice husks with high surface area and high affinity for biomass accumulation on its surface are promising media for a green and environmentally friendly FBBR process. The kinetics parameters values are utilizable for modeling of FBBR using rice husks as fixed media in HWW treatment.

Occurrence of antibiotic resistance inEscherichia colifrom surface waters and fecal pollution sources near Hamilton, Ontario

2005 ◽  
Vol 51 (6) ◽  
pp. 501-505 ◽  
Author(s):  
Thomas A Edge ◽  
Stephen Hill
Keyword(s):  
Escherichia Coli ◽  
Antibiotic Resistance ◽  
Surface Waters ◽  
Municipal Wastewater ◽  
Average Rate ◽  
Fecal Pollution ◽  
Pollution Sources ◽  
Source Tracking ◽  
E Coli ◽  
Bird Feces

Antibiotic resistance was examined in 462 Escherichia coli isolates from surface waters and fecal pollution sources around Hamilton, Ontario. Escherichia coli were resistant to the highest concentrations of each of the 14 antibiotics studied, although the prevalence of high resistance was mostly low. Two of 12 E. coli isolates from sewage in a CSO tank had multiple resistance to ampicillin, ciprofloxacin, gentamicin, and tetracycline above their clinical breakpoints. Antibiotic resistance was less prevalent in E. coli from bird feces than from municipal wastewater sources. A discriminant function calculated from antibiotic resistance data provided an average rate of correct classification of 68% for discriminating E. coli from bird and wastewater fecal pollution sources. The preliminary microbial source tracking results suggest that, at times, bird feces might be a more prominent contributor of E. coli to Bayfront Park beach waters than municipal wastewater sources.Key words: antibiotic resistance, Escherichia coli, surface water, fecal pollution.

scholarly journals The treatment of hospital wastewater: an appraisal

2006 ◽  
Vol 4 (4) ◽  
pp. 405-416 ◽  
Author(s):  
B. Pauwels ◽  
W. Verstraete
Keyword(s):  
Public Health ◽  
Drinking Water ◽  
Wastewater Treatment ◽  
Surface Waters ◽  
Chemical Compounds ◽  
Hospital Wastewater ◽  
X Ray ◽  
Microbial Strains ◽  
Special Concern ◽  
Microbial Agents

Hospitals discharge considerable amounts of chemicals and microbial agents in their wastewaters. Problem chemicals present in hospital wastewater belong to different groups, such as antibiotics, X-ray contrast agents, disinfectants and pharmaceuticals. Many of these chemical compounds resist normal wastewater treatment. They end up in surface waters where they can influence the aquatic ecosystem and interfere with the food chain. Humans are particularly exposed by the drinking water, produced from surface water. Microbial agents of special concern are multiresistant microbial strains. The latter are suspected to contribute to the spread of antibiotic resistance. In this paper, we will discuss the different approaches towards hospital wastewater treatment. The principle of uncoupling hospitals from public sewers warrants in-depth evaluation by technologists and ecotoxicologists as well as public health specialists.

scholarly journals Non-Steroid Anti-Infflamatory Drugs in Municipal Wastewater and Surface Waters/ Niesteroidowe Leki Przeciwzaplane W Ściekach Mieskich I Wodach Powierzchniowych

2014 ◽  
Vol 14 (3) ◽  
pp. 63-74 ◽  
Author(s):  
Ewelina Płuciennik-Koropczuk
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Surface Waters ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Treated Wastewater ◽  
Drinking Waters ◽  
Production And Consumption ◽  
Inflammatory Drugs ◽  
Prescription Medicines

Abstract Increased production and consumption of drugs influences the pollution pharmaceuticals. Recent years have seen a significant increase in the consumption of non-prescription medicines, among which, are a large group of non-steroidal anti-inflammatory drugs (NSAIDs). Research conducted in Poland and abroad showed the presence of NSAIDs, both in treated wastewater in surface waters and drinking waters. One of the most frequently detected drugs in the environment is diclofenac, belongs to NSAID. Its concentration in surface waters range from 9 to 3363 ng/L. Traditional wastewater treatment plants are not specialized enough in removing the pharmaceuticals and their metabolites, and with purified wastewater are introduced into surface waters. Diclofenac concentrations in treated wastewater range from 0.29 to 2.5 μg/L, the average removal efficiency is about 40%.

scholarly journals SARS-CoV-2 in Municipal Wastewater Treatment Plant, Collection Network and Hospital Wastewater

2021 ◽  
Author(s):  
Chiman Karami ◽  
Abdollah Dargahi ◽  
Mehdi Vosoughi ◽  
Ali Normohammadi ◽  
Farhad Jalali ◽  
...  
Keyword(s):  
Public Health ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Hospital Wastewater ◽  
Municipal Wastewater Treatment ◽  
Plant Collection ◽  
Sampling Duration

Abstract The current outbreak of coronavirus disease (COVID-19) has led to creating a public health emergency conditions since 2019. COVID-19, which is caused by SARS-CoV-2, is spread via human-to-human transmission by direct contact or droplets. Through conducting this study, we were looking for detecting SARS-CoV-2 in wastewater produced in Iran country (Ardabil, Nir, Khalkhal and Givi) (wastewater collection network, wastewater treatment plant and hospital wastewater). In this research, samples (n = 76) were collected from influent and effluent of municipal and hospital wastewater treatment plants and some samples were also collected from Ardabil municipal wastewater manholes. The sampling duration included the white (lower risk of covid-19) and red (high risk of covid-19) conditions. Samples were stored at -20°C for further diagnostic tests. Out of 76 samples, a total of 16 samples (21.05%) collected from wastewater in Ardabil province (Ardabil, Nir, Khalkhal, and Givi), were positive in terms of SARS-CoV-2. Wastewater epidemiology can facilitate detection of the incidence of pathogens through metropolises, measurement of population prevalence without direct testing, and provision of information to public health system about the efficiency of intervening efforts.

scholarly journals Metagenomic Survey Reveals More Diverse and Abundant Antibiotic Resistance Genes in Municipal Wastewater Than Hospital Wastewater

2021 ◽  
Vol 12 ◽  
Author(s):  
Dengwei Zhang ◽  
Ye Peng ◽  
Chak-Lun Chan ◽  
Hilda On ◽  
Hogan Kok-Fung Wai ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Wastewater Treatment ◽  
Resistance Genes ◽  
Municipal Wastewater ◽  
Metal Resistance ◽  
Resistant Bacteria ◽  
Metagenomic Sequencing ◽  
Hospital Wastewater ◽  
Municipal Wastewater Treatment ◽  
Jaipur City

Alongside antibiotic resistance, co-selection of antibiotics, biocides, and metal resistance is a growing concern. While hospital wastewater is considered a hotspot for antibiotic-resistant bacteria (ARB) and genes (ARGs), the scenario in India, one of the biggest consumers of antibiotics, remains poorly described. In this study, we used metagenomic sequencing to characterize ARGs and biocide/metal resistance genes (BMRGs) in four wastewater treatment plants (WWTPs) in Jaipur City of India. We observed a significantly lower richness and abundance of ARGs in the influent of a WWTP exclusively receiving hospital wastewater when compared to other three WWTPs involving municipal wastewater treatment. Several tetracycline and macrolide-lincosamide-streptogramin resistance genes were enriched in influents of these three municipal wastewater-related treatment plants, whereas hospital wastewater had a higher abundance of genes conferring resistance to disinfectant-related compounds such as synergize and wex-cide-128, reflecting the patterns of antibiotic/disinfectant use. Of note, in the wastewater system with more chemicals, there was a strong correlation between the numbers of ARGs and BMRGs potentially harbored by common hosts. Our study highlights significant influxes of ARGs from non-hospital sources in Jaipur City, and thus more attention should be paid on the emergence of ARGs in general communities.

The persistence and transformation of silver nanoparticles in littoral lake mesocosms monitored using various analytical techniques

2014 ◽  
Vol 11 (4) ◽  
pp. 419 ◽  
Author(s):  
Lindsay M. Furtado ◽  
Md Ehsanul Hoque ◽  
Denise M. Mitrano ◽  
James F. Ranville ◽  
Beth Cheever ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Surface Waters ◽  
Lake Water ◽  
Natural Waters ◽  
Municipal Wastewater ◽  
Analytical Techniques ◽  
Aquatic Organisms ◽  
Silver Ions ◽  
Icp Ms ◽  
The Individual

Environmental context Silver nanoparticles discharged with municipal wastewater may contaminate surface waters and harm aquatic ecosystems. We applied several analytical techniques to investigate the persistence and transformation of silver nanoparticles in a natural lake environment, and show, through multiple lines of evidence, that they persisted in lake water for several weeks after addition. The nanoparticles were releasing silver ions through dissolution, but these toxic ions were likely binding with natural organic matter in the lake water. Abstract Silver nanoparticles (AgNPs) may be released into surface waters, where they can affect aquatic organisms. However, agglomeration, dissolution, surface modifications and chemical speciation are important processes that control the toxicity of AgNPs. The purpose of the study was to apply various methods for monitoring the persistence and transformation of AgNPs added to littoral lake mesocosms. Analysis of total Ag showed that the levels in the mesocosms declined rapidly in the first 12h after addition, followed by a slower rate of dissipation with a half-life (t1/2) of ~20 days. Analysis using single particle ICP-MS (spICP-MS) showed no evidence of extensive homo-agglomeration of AgNPs. The stability of AgNPs was likely due to the low ionic strength and high concentrations of humic-rich dissolved organic carbon (DOC) in the lake water. Analyses by spICP-MS, cloud point extraction (CPE) and asymmetric flow field flow fractionation coupled to ICP-MS (AF4-ICP-MS) all indicated that the concentrations of AgNP decreased over time, and the nanoparticles underwent dissolution. However, the concentrations of dissolved silver, which includes Ag+, were generally below detection limits when analysed by centrifugal ultrafiltration and spICP-MS. It is likely that the majority of free ions released by dissolution were complexing with natural organic material, such as DOC. An association with DOC would be expected to reduce the toxicity of Ag+ in natural waters. Overall, we were able to characterise AgNP transformations in natural waters at toxicologically relevant concentrations through the use of multiple analytical techniques that compensate for the limitations of the individual methods.

A suspect screening analysis for contaminants of emerging concern in municipal wastewater and surface water using liquid–liquid extraction and stir bar sorptive extraction

2020 ◽  
Vol 12 (36) ◽  
pp. 4487-4495
Author(s):  
Kyra A. Murrell ◽  
Frank L. Dorman
Keyword(s):  
Surface Waters ◽  
Municipal Wastewater ◽  
Liquid Extraction ◽  
Wastewater Effluent ◽  
Stir Bar Sorptive Extraction ◽  
Contaminants Of Emerging Concern ◽  
Screening Analysis ◽  
Sorptive Extraction ◽  
Liquid Liquid Extraction ◽  
Important Field

The presence of contaminants of emerging concern (CECs) in wastewater effluent and surface waters is an important field of research for analytical scientists.

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