Results 31 to 40 of about 119,917 (270)

Ozonation of return activated sludge for disintegration and solubilisation with synthesized titanium oxide as catalyst

open access: yesE3S Web of Conferences, 2018
Ozonation of activated sludge in the present of titanium dioxide (TiO2) as catalyst to enhance the production of hydroxyl radical was evaluated in comparison to the sole ozonation process.
Mohd Sarif S.F.Z.   +5 more
doaj   +1 more source

Phosphorus recovery from calcium phosphate enriched activated sludge [PDF]

open access: yesE3S Web of Conferences
This study explores the potential of activated sludge from wastewater treatment plants (WWTP) as an alternative source of phosphorus, vital for fertilisers and other products, compared to large-scale phosphorus mining.
Maulidiany Nopa Dwi   +1 more
doaj   +1 more source

Microbial residence time is a controlling parameter of the taxonomic composition and functional profile of microbial communities. [PDF]

open access: yes, 2019
A remaining challenge within microbial ecology is to understand the determinants of richness and diversity observed in environmental microbial communities.
Achermann, Stefan   +7 more
core   +3 more sources

Excess Sludge Reduction Using a High-pressure Jet Device via a Modified Ludzack-Ettinger Process: Performance and Microbial Communities

open access: yesJournal of Water and Environment Technology, 2020
Excess sludge reduction is a central challenge in wastewater treatment, requiring a cost-effective technology. Here, we report the pilot-scale implementation of two Modified Ludzack-Ettinger (MLE) processes with and without a high-pressure jet device ...
Hiroyuki Yoshino   +4 more
doaj   +1 more source

The Comparison of parasite eggs and protozoan cysts of urban raw wastewater and efficiency of various wastewater treatment systems to remove them [PDF]

open access: yes
One of the most important quality characteristics associated with wastewater reuse in agriculture is the microbial quality. This study aimed to determine the efficiencies of Ghasreshirin (constructed wetland), Islamabadgharb and Gilangharb wastewater ...
حضرتی, صادق   +4 more
core   +1 more source

Time series genome-centric analysis unveils bacterial response to operational disturbance in activated sludge [PDF]

open access: yes, 2019
Understanding ecosystem response to disturbances and identifying the most critical traits for the maintenance of ecosystem functioning are important goals for microbial community ecology.
Erijman, Leonardo   +4 more
core   +1 more source

Enzyme activities in activated sludge flocs [PDF]

open access: yesApplied Microbiology and Biotechnology, 2007
This study quantified the activities of enzymes in extracellular polymeric substances (EPS) and in pellets. Seven commonly adopted extraction schemes were utilized to extract from aerobic flocs the contained EPS, which were further categorized into loosely bound (LB) and tightly bound (TB) fractions.
Yu, Guang-Hui   +3 more
openaire   +2 more sources

Use of Lecane rotifers for limiting Thiothrix filamentous bacteria in bulking activated sludge in a dairy wastewater treatment plant [PDF]

open access: yesArchives of Biological Sciences, 2014
Excessive growth of filamentous bacteria is a serious problem in many dairy wastewater treatment plants (WWTPs). The objective of the study was to determine whether Lecane inermis rotifers were able to reduce the density of Thiothrix bacteria in
Kowalska Ewa   +2 more
doaj   +1 more source

Speciation and fate of copper in sewage treatment works with and without tertiary treatment: The effect of return flows [PDF]

open access: yes, 2013
This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2013 Taylor & Francis.The removal of metals from wastewaters is becoming an important issue, with new environmental quality standards ...
Barth EF   +18 more
core   +1 more source

Comparison on nitrosation and anaerobic ammonium oxidation between activated sludge and biofilm from an autotrophic nitrogen removal SBBR

open access: yesTecnología y ciencias del agua, 2017
Qin, Y., Guo, J., & Fang, F. (March-April, 2017). Comparison on nitrosation and anaerobic ammonium oxidation between activated sludge and biofilm from an autotrophic nitrogen removal SBBR.
Qin Yu, Guo Jinsong, Fang Fang
doaj   +1 more source

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