Results 21 to 30 of about 119,917 (270)

Use of DAIME for characterisation of activated sludge flocs

open access: yesArchives of Environmental Protection, 2017
Monitoring of activated sludge flocs may provide important information for effective operation and control of wastewater treatment. The research objective is to demonstrate methodology for activated sludge image processing aimed to describe morphological
Gnida Anna
doaj   +1 more source

The impact of process variables on the removal of PBDEs and NPEOs during simulated activated sludge treatment [PDF]

open access: yes, 2007
Sewage effluent is known to be a major source of endocrine disrupting compounds entering the aquatic environment. More efficient wastewater treatment could reduce the environmental load but, in order to achieve this factors determining compound behaviour
Langford, KH, Lester, JN, Scrimshaw, MD
core   +1 more source

Effect of ultrasonic, thermal and ozone pre-treatments on waste activated sludge solubilisation and anaerobic biodegradability [PDF]

open access: yes, 2006
In order to enhance the efficiency of anaerobic digestion, the effects of ultrasounds, ozonation and thermal pre-treatment have been studied on waste activated sludge.
Alfonso   +51 more
core   +2 more sources

Primary and Activated Sludge Biogas Production: Effect of Temperature

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2018
Sewage sludge management is a problem of growing importance. Anaerobic sewage sludge stabilization is commonly used technology, where organic matter contained in primary and activated sewage sludge is converted into biogas, so both, pollution control and
Tereza Dokulilová   +5 more
doaj   +1 more source

Development of microbial communities in biofilm and activated sludge in a hybrid reactor

open access: yesScientific Reports, 2022
Microorganisms play a key role in biological wastewater treatment. The form in which biomass develops determines the efficiency and mechanisms of organic compound conversion, due to different conditions in various microbial structures.
Martyna Godzieba   +3 more
doaj   +1 more source

Statistically-Based Comparison of the Removal Efficiencies and Resilience Capacities between Conventional and Natural Wastewater Treatment Systems: A Peak Load Scenario [PDF]

open access: yes, 2018
Emerging global threats, such as climate change, urbanization and water depletion, are driving forces for finding a feasible substitute for low cost-effective conventional activated sludge (AS) technology. On the other hand, given their low cost and easy
Charalambous, Panayiotis   +5 more
core   +3 more sources

Effect of process parameters on the energy requirement in ultrasonical treatment of waste sludge [PDF]

open access: yes, 2009
Mechanical treatment methods are used as pre-treatment methods in order to enhance the efficiency of conventional sludge treatment processes and the sludge becomes more suitable for its complete treatment.
Akin   +23 more
core   +2 more sources

Side-stream sludge treatment using free ammonia for reducing sludge production [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2019
Much attention has been paid to reducing of excess sludge production in the activated sludge process, due to high treatment and disposal costs. In this study, an innovative approach for achieving sludge reduction, which featured recirculating a portion ...
Song Kang   +4 more
doaj   +1 more source

Toxic Effect of Ammonium Nitrogen on the Nitrification Process and Acclimatisation of Nitrifying Bacteria to High Concentrations of NH4-N in Wastewater

open access: yesEnergies, 2021
The aim of the conducted research was to assess the effectiveness of the nitrification process, at different concentrations of ammonium nitrogen, in biologically treated wastewater in one of the largest municipal and industrial wastewater treatment ...
Iwona Beata Paśmionka   +7 more
doaj   +1 more source

Seeking to enhance the bioenergy of municipal sludge: Effect of alkali pre-treatment and soluble organic matter supplementation [PDF]

open access: yes, 2017
The aim of this research is to enhance the mesophilic anaerobic digestion of municipal sludge from Cadiz-San Fernando (Spain) wastewater treatment plant at 20 days hydraulic retention time (HRT).
Pérez García, Montserrat   +3 more
core   +1 more source

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