Modeling PFAS Removal Using Granular Activated Carbon for Full-Scale System Design

2022 ◽  
Vol 148 (3) ◽  
Author(s):  
Jonathan B. Burkhardt ◽  
Nick Burns ◽  
Dustin Mobley ◽  
Jonathan G. Pressman ◽  
Matthew L. Magnuson ◽  
...  
Keyword(s):  
Activated Carbon ◽  
System Design ◽  
Granular Activated Carbon ◽  
Full Scale

scholarly journals The Bacterial Communities of Full-Scale Biologically Active, Granular Activated Carbon Filters Are Stable and Diverse and Potentially Contain Novel Ammonia-Oxidizing Microorganisms

2015 ◽  
Vol 81 (19) ◽  
pp. 6864-6872 ◽  
Author(s):  
Timothy M. LaPara ◽  
Katheryn Hope Wilkinson ◽  
Jacqueline M. Strait ◽  
Raymond M. Hozalski ◽  
Michael J. Sadowksy ◽  
...  
Keyword(s):  
Activated Carbon ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Bacterial Communities ◽  
Granular Activated Carbon ◽  
Full Scale ◽  
Biologically Active ◽  
Rrna Gene ◽  
Ammonia Oxidizing Bacteria ◽  
Content Type

ABSTRACTThe bacterial community composition of the full-scale biologically active, granular activated carbon (BAC) filters operated at the St. Paul Regional Water Services (SPRWS) was investigated using Illumina MiSeq analysis of PCR-amplified 16S rRNA gene fragments. These bacterial communities were consistently diverse (Shannon index, >4.4; richness estimates, >1,500 unique operational taxonomic units [OTUs]) throughout the duration of the 12-month study period. In addition, only modest shifts in the quantities of individual bacterial populations were observed; of the 15 most prominent OTUs, the most highly variable population (aVariovoraxsp.) modulated less than 13-fold over time and less than 8-fold from filter to filter. The most prominent population in the profiles was aNitrospirasp., representing 13 to 21% of the community. Interestingly, very few of the known ammonia-oxidizing bacteria (AOB; <0.07%) and no ammonia-oxidizingArchaeawere detected in the profiles. Quantitative PCR ofamoAgenes, however, suggested that AOB were prominent in the bacterial communities (amoA/16S rRNA gene ratio, 1 to 10%). We conclude, therefore, that the BAC filters at the SPRWS potentially contained significant numbers of unidentified and novel ammonia-oxidizing microorganisms that possessamoAgenes similar to those of previously described AOB.

scholarly journals Effects of Backwashing on Granular Activated Carbon with Ammonium Removal Potential in a Full-Scale Drinking Water Purification Plant

Water ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1830 ◽  
Author(s):  
Jia Niu ◽  
Ikuro Kasuga ◽  
Futoshi Kurisu ◽  
Hiroaki Furumai
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Purification ◽  
Granular Activated Carbon ◽  
Full Scale ◽  
Ammonia Oxidizing Bacteria ◽  
Ammonium Removal ◽  
Before And After ◽  
Drinking Water Purification ◽  
Purification Plant

Granular activated carbon (GAC) has been widely introduced to advanced drinking water purification plants to remove organic matter and ammonium. Backwashing, which is the routine practice for GAC maintenance, is an important operational factor influencing the performance of GAC and its microbial biomass. In this study, the effects of backwashing on the ammonium removal potential of GAC were evaluated. In addition, abundances of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) on GAC were analyzed. GAC samples before and after backwashing were collected from a full-scale drinking water purification plant. Samplings were conducted before and after implementation of prechlorination of raw water. The results showed that the ammonium removal potential of the GAC increased by 12% after backwashing before prechlorination (p < 0.01). After implementing the prechlorination, the ammonium removal potential of the GAC decreased by 12% even after backwashing (p < 0.01). The AOA was predominant on the GAC in the two samplings. Regardless of prechlorination, the amounts of the AOA and the AOB remained at the same level before and after backwashing. Analysis of the backwashing water indicated that the amounts of the AOA and AOB washed out from the GAC were negligible (0.08%–0.26%) compared with their original amounts on the GAC. These results revealed the marginal role of backwashing on the biomass of ammonia oxidizers on GAC. However, the results also revealed that backwashing could have a negative impact on the ammonium removal potential of GAC during prechlorination.

Bacterial diversity and active biomass in full-scale granular activated carbon filters operated at low water temperatures

2014 ◽  
Vol 36 (6) ◽  
pp. 681-692 ◽  
Author(s):  
Outi E. Kaarela ◽  
Heli A. Härkki ◽  
Marja R.T. Palmroth ◽  
Tuula A. Tuhkanen
Keyword(s):  
Activated Carbon ◽  
Bacterial Diversity ◽  
Granular Activated Carbon ◽  
Full Scale ◽  
Active Biomass

Integral evaluation of granular activated carbon at four stages of a full-scale WWTP deodorization system

2021 ◽  
Vol 754 ◽  
pp. 142237 ◽  
Author(s):  
P. Márquez ◽  
A. Benítez ◽  
Á. Caballero ◽  
J.A. Siles ◽  
M.A. Martín
Keyword(s):  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Full Scale ◽  
Integral Evaluation

scholarly journals Assessment of the breakthrough of micropollutants in full-scale granular activated carbon adsorbers by rapid small-scale column tests and a novel pilot-scale sampling approach

2020 ◽  
Vol 6 (10) ◽  
pp. 2742-2751 ◽  
Author(s):  
Tony Merle ◽  
Detlef R. U. Knappe ◽  
Wouter Pronk ◽  
Bernadette Vogler ◽  
Juliane Hollender ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Service Life ◽  
Granular Activated Carbon ◽  
Pilot Scale ◽  
Full Scale ◽  
Small Scale ◽  
Column Tests ◽  
Sampling Approach

This study aimed to compare three approaches for predicting the service life of full-scale GAC adsorbers for the removal of micropollutants.

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