Poster Sessions

Context:Granular sludge-based upflow anaerobic sludge blanket (UASB) reactors are an established technology for treatment of high strength wastewaters due to excellent biomass retention, allowing for compact reactor design. The globally growing population and closure of water cycles results in incre...

The Biogas (rich in methane CH4) production is carried out through the process of anaerobic digestion (AD), in which residues are substrates for a microbial consortium that by their metabolism stabilize organic matter and generate by-products. Through co-digestion of residues from 1G and 2G ethanol ...

The Edwards Aquifer serves as a primary source of drinking water to more than 2 million people in south-central Texas. As a karst aquifer, it is vulnerable to human and animal fecal contamination which poses a serious risk to human and environmental health. A one-year study (Jan 2018 – Feb 2019) a...

Context. Fossil fuels must eventually be replaced by environmentally and economically sustainable, carbon-neutral fuels. Microalgae biomass can be a viable alternative source of third-generation biofuel production. Agri-food aqueous wastes like cheese whey from the dairying industry can become impo...

Mainstream nitrogen removal by partial nitritation/anammox (PN/A) offers energy and cost savings for sewage treatment. This pathway relies on two groups of microbes: aerobic and anoxic ammonium-oxidizing bacteria. Next to these essential bacteria, undesired groups of bacteria like nitrite-oxidizi...

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Context. The COVID-19 pandemic has caused unprecedented disruption in all aspects of life globally. The emergence of new variants of concern (VOC) that have increased transmissibility and tout vaccine immune evasion suggests that variant tracking is required to manage the COVID-19 pandemic.Gap. Ther...

Clean groundwater is an essential source of drinking water. However, its quality is threatened by contamination with organic micropollutants (OMPs) arising from our use of pharmaceuticals, household chemicals, and pesticides. This presentation introduces the challenges of OMPs in drinking water aqui...

High yields of agricultural produce is reached traditionally by the application of fertilizers and/or pesticides. When agricultural soil is saturated with pesticides, any pesticide addition to the soil leaches and thus reaches the underlying groundwater. Preventing further contamination and remediat...

Pesticides and other micropollutants are often found in groundwater above the limits set by the EU. To ensure safe drinking water, drinking water production relies on energy-intensive adsorption or advanced oxidation technologies. Biodegradation, the major process for xenobiotics' natural attenuatio...

Context. Extracellular DNA (exDNA) is an emerging contaminant in wastewater which cannot be removed efficiently due to their small molecular size and poor settleability. Hence it can be disseminated into environment by water reuse. Gap. The movement of exDNA across wastewater treatment is unknown...

Context.Microorganisms in wastewater treatment plants (WWTPs) are essential for water purification to protect public and environmental health. The diversity andassembly of bacterial communities in wastewater treatment plants (WWTPs) is thought to have a direct influence on system performance.Gap.S...

Biodesulfurization (BD) under haloalkaline conditions removes H2S from gas streams and converts it to elemental sulfur by using haloalkaliphilic sulfur-oxidizing bacteria (SOB). In this process, gas is first absorbed in an absorber and oxidized into sulfur in an aerated bioreactor. Recently, the BD ...

A functioning anaerobic digestion(AD) microbiome is integral for sludge management to be successful. Comprehensive ecological insights, and a full accounting of important microbial species, can help to improve and validate operational strategies. We analyzed a time-series of metagenome samples obta...

Context. The Alberta oil sands industry has amassed over 1 trillion litres of fluid tailings containing toxic compounds such as naphthenic acids. End-pit lakes have been proposed as a long-term reclamation strategy and Base Mine Lake (BML) is the only full-scale end-pit lake in the Canadian oil san...

Context. Decentralized highstrength wastewater treatment can be accomplished in microbial electrochemical cells (MEC), in which anode-respiring bacteria (ARB) degrade organic matter to respire electrons to an electrode (anode), generating an electrical current that can be used for producing electric...

Membrane bioreactors (MBR) have better removal of emerging organic contaminants such as antibiotics, antibiotic resistance genes (ARG) and microbial contaminants compared to activated sludge processes. In addition, anaerobic membrane bioreactors (AnMBR) have advantages over aerobic configuration as ...

SARS-CoV-2 has genetically changed since the first infections. The quick adaption of the virus to the new host led to mutations in the binding sites of the spike protein, which is known to increase the infectivity of the virus (Korber et al., 2020). The genome sequencing of wastewater has developed ...

Thailand has a large numbers of cassava pulp residues from agro-industries. Though it is rich in carbohydrate, their utilization is limited due to the low content of protein and poor digestibility resulting to low methane production rate. To improve the utilization efficiency of cassava pulp residue...

Context. Ozonation is a used for drinking water preparation and to reduce assimilable organic matter and remove hazardous ozonation byproducts, ozonation is frequently followed by biofiltration, such as passage through slow sand filters (SSFs). The disinfectant properties of the ozone causes shifts ...

Context. Wastewater surveillance has emerged as a useful tool in the public health response to the COVID-19 pandemic.Gap. While wastewater surveillance has been applied at various scales to monitor population-level COVID-19 dynamics, there is a need for quantitative metrics to interpret wastewater d...

In order to solve the growing need of excess sludge (ES) disposal in China, anaerobic digestion with thermal hydrolysis (THP-AD) is gaining more and more applications. However, engineering microbial ecology in THP-AD is still not clear. Accordingly, four full-scale THP-AD which were operated under ...

Due to the complexity of microbiome composition and interactions, it remains challenging to uncover the bioreactor "black-box" and to predict bioreactor dynamics (e.g., anaerobic digestion) through linking the microbial community, operational factors and system performances. Previous studies have fo...

Low impact developments are one of the main tools to improve stormwater quality. Stormwater control measures (SCMs) have been developed to help address the growing urban stormwater problem. Stormwater basins such as detention and retention basins are used to address these concerns. These basins comm...

Context:The study of (meta-)genomics data has been providing scientists with valuable insights into the functioning and composition of microbial communities. Latest advancements in high-throughput sequencing technologies have resulted in significant growth in the data produced and made available for...

Polyhydroxyalkanoates can be produced using surplus activated sludge from biological wastewater treatment processes. This direct accumulation requires that the WWTP imposes inherent selection pressures to promote for PHA accumulating microorganisms. Direct accumulation may reach PHA contents of 0.50...

Emergence of bacterial infections resistant to last resort antibiotics, such as beta-lactams, is an increasing human health concern. Extended-spectrum beta-lactamases (ESBLs) are mostly encoded on plasmids (i.e., mobile genetic elements) and can easily spread via horizontal gene transfer. Wastewater...

Context.The discovery of complete ammonia-oxidizing (comammox) Nitrospirahas added an important new process to the microbial nitrogen cycle.Gap.While comammox Nitrospira have been detected in various ecosystems, very few study has achieved selective enrichment of comammox Nitrospira over other canon...

Context. Understanding how chlorination impacts bacteria in the drinking water distribution system (DWDS) and biofilm can support decision making and microbial risk assess.Gap. A number of studies compare between different DWDS with different chlorination regimes. At full scale, however, the numbe...

Context. Polyphosphate accumulating organisms (PAOs) can promote P removal in enhanced biological phosphorus removal (EBPR) systems. The most commonly observed organisms thought to be PAOs are Accumulibacter and Tetrasphaera.Gap. All Accumulibacter and Tetrasphaera are typically assumed to remove ...