Short-term and long-term effects of copper on the performance and microorganisms in sequencing batch reactor

Wang, Dongqi; Yang, Zhangjie; Liu, T.; Li, X. X.; Zheng, Xianghui; Lin, Yuan

doi:10.1088/1755-1315/191/1/012109

Cited by 1 publication

(2 citation statements)

References 15 publications

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“…Trace amounts of heavy metals are necessary for microorganisms for their cell growth, but higher concentrations cause inhibitory or toxic effects affecting cell growth, loss of floc structure, changes in community structure/microbial species, functional genes, and decrease in treatment efficiency [17,18]. It has been documented that divalent metal ions, such as Fe 2+ , Mg 2+ , and Ca 2+ could improve aerobic granulation as a result of the significant roles they play during microbial biomass selfimmobilization, by decreasing cell surface charges and bridging extracellular polymeric substances (EPSs) [19].…”

Section: Heavy Metalsmentioning

confidence: 99%

“…Denitrifiers' metabolic activity is inhibited when phosphorus, nitrogen, and organics are removed 50. The short‐term exposure of ≥ 7 mg L −1 Cu 2+ concentration per cycle studied by 17 reduced orthophosphate (

{PO}_{4}^{3}

‐P) and dissolved organic carbon (DOC) removal rates. It also decreased the adenosine triphosphate (ATP) content and dehydrogenase activity.…”

Section: Effects Of Different Toxicant Stress On Sbrsmentioning

confidence: 99%

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Toxic Effects of Xenobiotic Compounds on the Microbial Community of Activated Sludge

et al. 2022

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The presence of xenobiotic compounds in biological wastewater treatment processes with activated sludge may reduce microbial communities, disrupt microbial diversity, and diminish system performance. Shock loads and unusual operating events in these biological systems have negative impacts on their efficiency and reliability for pollutant degradation, thereby posing high risk to microorganisms and water quality of receiving treated water bodies. The severity and characteristics of the occurring damage are determined by the toxic contaminant's degree, nature and mode of application. This review highlights the effects of metabolic uncouplers, heavy metals, carbon nanotubes, pharmaceuticals and personal care products, nanoparticles, and phenolic compounds stress on microbial biomass in activated sludge systems. The synergistic, antagonistic, and shock load toxic effects of hybrid substances exposure in an activated sludge sequential batch reactor (SBR) system on organic and nutrient removal, system efficiency, and toxicants biodegradation are discussed. The findings can be used to provide a theoretical foundation and professional assistance for optimizing the shock impacts of these toxic substances on biological wastewater treatment systems, which will help to reduce their negative effects on treatment system efficiency.

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Section: Heavy Metalsmentioning

confidence: 99%

{PO}_{4}^{3}

‐P) and dissolved organic carbon (DOC) removal rates. It also decreased the adenosine triphosphate (ATP) content and dehydrogenase activity.…”

Section: Effects Of Different Toxicant Stress On Sbrsmentioning

confidence: 99%

Toxic Effects of Xenobiotic Compounds on the Microbial Community of Activated Sludge

et al. 2022

View full text Add to dashboard Cite

show abstract

Short-term and long-term effects of copper on the performance and microorganisms in sequencing batch reactor

Cited by 1 publication

References 15 publications

Toxic Effects of Xenobiotic Compounds on the Microbial Community of Activated Sludge

Toxic Effects of Xenobiotic Compounds on the Microbial Community of Activated Sludge

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