Removal of pharmaceuticals and personal care products by ammonia oxidizing bacteria acclimated in a membrane bioreactor: Contributions of cometabolism and endogenous respiration

2017 ◽  
Vol 605-606 ◽  
pp. 18-25 ◽  
Author(s):  
Junwon Park ◽  
Naoyuki Yamashita ◽  
Guangxue Wu ◽  
Hiroaki Tanaka
Keyword(s):  
Membrane Bioreactor ◽  
Personal Care Products ◽  
Endogenous Respiration ◽  
Ammonia Oxidizing Bacteria ◽  
Personal Care

Removal characteristics of pharmaceuticals and personal care products: Comparison between membrane bioreactor and various biological treatment processes

Chemosphere ◽  
2017 ◽  
Vol 179 ◽  
pp. 347-358 ◽  
Author(s):  
Junwon Park ◽  
Naoyuki Yamashita ◽  
Chulhwi Park ◽  
Tatsumi Shimono ◽  
Daniel M. Takeuchi ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Membrane Bioreactor ◽  
Personal Care Products ◽  
Personal Care ◽  
Treatment Processes

Assessing emerging wastewater regulations to minimize the risk from pharmaceuticals and personal care products

2015 ◽  
Vol 26 (6) ◽  
pp. 966-983 ◽  
Author(s):  
Benjamin Blair ◽  
Jenny Kehl ◽  
Rebecca Klaper
Keyword(s):  
Membrane Bioreactor ◽  
Meta Analysis ◽  
Personal Care Products ◽  
Personal Care ◽  
Industrial Countries ◽  
Content Type ◽  
Reduction Strategies ◽  
Management Alternative ◽  
Treatment Technologies ◽  
The Cost

Purpose – Pharmaceutical and personal care products (PPCPs) and phosphorus are pollutants that can cause a wide array of negative environmental impacts. Phosphorus is a regulated pollutant in many industrial countries, while PPCPs are widely unregulated. Many technologies designed to remove phosphorus from wastewater can remove PPCPs, therefore the purpose of this paper is to explore the ability of these technologies to also reduce the emission of unregulated PPCPs. Design/methodology/approach – Through meta-analysis, the authors use the PPCPs’ risk quotient (RQ) to measure and compare the effectiveness of different wastewater treatment technologies. The RQ data are then applied via a case study that uses phosphorus effluent regulations to determine the ability of the recommended technologies to also mitigate PPCPs. Findings – The tertiary membrane bioreactor and nanofiltration processes recommended to remove phosphorus can reduce the median RQ from PPCPs by 71 and 81 percent, respectively. The ultrafiltration technology was estimated to reduce the median RQ from PPCPs by 28 percent with no cost in addition to the costs expected under the current phosphorus effluent regulations. RQ reduction is expected with a membrane bioreactor and the cost of upgrading to this technology was found to be $11.76 per capita/year. Practical implications – The authors discuss the management implications, including watershed management, alternative PPCPs reduction strategies, and water quality trading. Originality/value – The evaluation of the co-management of priority and emerging pollutants illuminates how the removal of regulated pollutants from wastewater could significantly reduce the emission of unregulated PPCPs.

scholarly journals Pharmaceuticals and personal care products’ (PPCPs) impact on enriched nitrifying cultures

2021 ◽  
Author(s):  
Carla Lopez ◽  
Mac-Anthony Nnorom ◽  
Yiu Fai Tsang ◽  
Charles W. Knapp
Keyword(s):  
Wastewater Treatment Plants ◽  
Personal Care Products ◽  
Inhibitory Effect ◽  
Mitigation Measures ◽  
Nitrifying Bacteria ◽  
Ammonia Oxidizing Bacteria ◽  
Personal Care ◽  
Nitrite Oxidizing Bacteria ◽  
Inhibition Of Nitrification ◽  
The Impact

AbstractThe impact of pharmaceutical and personal care products (PPCPs) on the performance of biological wastewater treatment plants (WWTPs) has been widely studied using whole-community approaches. These contaminants affect the capacity of microbial communities to transform nutrients; however, most have neither honed their examination on the nitrifying communities directly nor considered the impact on individual populations. In this study, six PPCPs commonly found in WWTPs, including a stimulant (caffeine), an antimicrobial agent (triclosan), an insect repellent ingredient (N,N-diethyl-m-toluamide (DEET)) and antibiotics (ampicillin, colistin and ofloxacin), were selected to assess their short-term toxic effect on enriched nitrifying cultures: Nitrosomonas sp. and Nitrobacter sp. The results showed that triclosan exhibited the greatest inhibition on nitrification with EC50 of 89.1 μg L−1. From the selected antibiotics, colistin significantly affected the overall nitrification with the lowest EC50 of 1 mg L−1, and a more pronounced inhibitory effect on ammonia-oxidizing bacteria (AOB) compared to nitrite-oxidizing bacteria (NOB). The EC50 of ampicillin and ofloxacin was 23.7 and 12.7 mg L−1, respectively. Additionally, experimental data suggested that nitrifying bacteria were insensitive to the presence of caffeine. In the case of DEET, moderate inhibition of nitrification (<40%) was observed at 10 mg L−1. These findings contribute to the understanding of the response of nitrifying communities in presence of PPCPs, which play an essential role in biological nitrification in WWTPs. Knowing specific community responses helps develop mitigation measures to improve system resilience.

scholarly journals Pharmaceuticals and Personal Care Products (PPCPs) Impact Enriched Nitrifying Cultures

2021 ◽  
Author(s):  
Carla Lopez ◽  
Mac-Anthony Nnorom ◽  
Yiu Fai Tsang ◽  
Charles W Knapp
Keyword(s):  
Wastewater Treatment Plants ◽  
Personal Care Products ◽  
Inhibitory Effect ◽  
Mitigation Measures ◽  
Nitrifying Bacteria ◽  
Ammonia Oxidizing Bacteria ◽  
Personal Care ◽  
Nitrite Oxidizing Bacteria ◽  
Inhibition Of Nitrification ◽  
The Impact

Abstract The impact of pharmaceutical and personal care products (PPCPs) on the performance of biological wastewater treatment plants (WWTPs) has been widely studied using whole-community approaches. These contaminants affect the capacity of microbial communities to transform nutrients; however, most have neither honed their examination on the nitrifying communities directly nor considered the impact on individual populations. In this study, six PPCPs commonly found in WWTPs, including a stimulant (caffeine), an antimicrobial agent (triclosan), an insect repellent ingredient (N,N-diethyl-m-toluamide (DEET)), and antibiotics (ampicillin, colistin, and ofloxacin), were selected to assess their short-term toxic effect on enriched nitrifying cultures: Nitrosomonas sp. and Nitrobacter sp. The results showed that triclosan exhibited the greatest inhibition on nitrification with EC50 of 89.1 µg L− 1. From the selected antibiotics, colistin significantly affected the overall nitrification with the lowest EC50 of 1 mg L− 1, and a more pronounced inhibitory effect on ammonia-oxidizing bacteria (AOB) compared to nitrite-oxidizing bacteria (NOB). The EC50 of ampicillin and ofloxacin were 22 and 12.7 mg L− 1, respectively. Additionally, experimental data suggested that nitrifying bacteria were insensitive to the presence of caffeine. In the case of DEET, moderate inhibition of nitrification (< 40%) was observed at the highest concentration tested. These findings contribute to the understanding of the response of nitrifying communities in presence of PPCPs, which play an essential role in biological nitrification in WWTPs. Knowing specific community responses helps develop mitigation measures to improve system resilience.

Removal of pharmaceuticals and personal care products in a membrane bioreactor wastewater treatment plant

2014 ◽  
Vol 69 (11) ◽  
pp. 2221-2229 ◽  
Author(s):  
M. Kim ◽  
P. Guerra ◽  
A. Shah ◽  
M. Parsa ◽  
M. Alaee ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Membrane Bioreactor ◽  
Personal Care Products ◽  
Treatment Plant ◽  
Dry Weight ◽  
Personal Care ◽  
High Concentrations ◽  
Final Effluent

Ninety-nine pharmaceuticals and personal care products (PPCPs) were analyzed in influent, final effluent, and biosolids samples from a wastewater treatment plant employing a membrane bioreactor (MBR). High concentrations in influent were found for acetaminophen, caffeine, metformin, 2-hydroxy-ibuprofen, paraxanthine, ibuprofen, and naproxen (104–105 ng/L). Final effluents contained clarithromycin, metformin, atenolol, carbamazepine, and trimethoprim (&gt;500 ng/L) at the highest concentrations, while triclosan, ciprofloxacin, norfloxacin, triclocarban, metformin, caffeine, ofloxacin, and paraxanthine were found at high concentrations in biosolids (&gt;103 ng/g dry weight). PPCP removals varied from −34% to &gt;99% and 23 PPCPs had ≥90% removal. Of the studied PPCPs, 26 compounds have been rarely or never studied in previous membrane bioreactor (MBR) investigations. The removal pathway showed that acetaminophen, 2-hydroxy-ibuprofen, naproxen, ibuprofen, codeine, metformin, enalapril, atorvastatin, caffeine, paraxanthine, and cotinine exhibited high degradation/transformation. PPCPs showing strong sorption to solids included triclocarban, triclosan, miconazole, tetracycline, 4-epitetracycline, norfloxacin, ciprofloxacin, doxycycline, paroxetine, and ofloxacin. Trimethoprim, oxycodone, clarithromycin, thiabendazole, hydrochlorothiazide, erythromycin-H2O, carbamazepine, meprobamate, and propranolol were not removed during treatment, and clarithromycin was even formed during treatment. This investigation extended our understanding of the occurrence and fate of PPCPs in an MBR process through the analysis of the largest number of compounds in an MBR study to date.

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