Results 31 to 40 of about 873,261 (261)

Phosphorus recovery from calcium phosphate enriched activated sludge [PDF]

E3S 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, Khairunnisa Shafira Maulida   +1 more
doaj   +1 more source

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

E3S 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., Alias S.S., Muhammad Ridwan F., Ku Salim K.S., Abidin C.Z.A., Md. Ali U.F.   +5 more
doaj   +1 more source

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

Journal 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, Ayaka Hosoe, Tomoyuki Hori, Masaaki Hosomi, Akihiko Terada   +4 more
doaj   +1 more source

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

Chemical 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, Zhou Xu, Zhou Yi-Wen, Jin Wenbiao, Tu Renjie   +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

Energies, 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, Karol Bulski, Piotr Herbut, Elżbieta Boligłowa, Frederico Márcio C. Vieira, Gabriela Bonassa, Marcelo Bortoli, Marina Celant de Prá   +7 more
doaj   +1 more source

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

, 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.
Xin Tian, Darmency, Henri, Bougrier, Claire, Delgenès, Jean-Philippe, Carrère, Hélène, Albasi, Claire, Tian, Xin, Henri Darmency   +7 more
core   +1 more source

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

Tecnología 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

Enzyme activities in activated sludge flocs [PDF]

Applied 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, He, Pin-Jing, Shao, Li-Ming, Lee, Duu-Jong   +3 more
openaire   +2 more sources

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

Advanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali, Jixin Zheng, Satoshi Wakai, Jie Liu, Hidetaka Nomaki, Misato Tsukatani, Noriyuki Isobe, Jingcheng Sang, Yuriko Aoki, Hideo Okamura, Daisuke Sasaki, Chiaki Ogino, Yuzo Yamazaki, Takashi Nishikaze, Kenji Takada, Maiko K. Okajima, Tatsuo Kaneko   +16 more
wiley   +1 more source

Enhancing methane production using anaerobic co-digestion of waste activated sludge with combined fruit waste and cheese whey

BMC Biotechnology, 2019
Background Recently, it has been indicated that anaerobic co-digestion of waste activated sludge with other waste streams at wastewater treatment plants is a promising strategy for enhancing methane production and materials recovery. The enhanced methane
Seyed Mostafa Hallaji, Mohammad Kuroshkarim, Seyede Parvin Moussavi   +2 more
doaj   +1 more source