Reverse flexing as a physical/mechanical treatment to mitigate fouling of fine bubble diffusers.
Victory Odize,John T. Novak,Haydée De Clippeleir,Ahmed Al-Omari,Joshua D. Smeraldi,Sudhir Murthy,Diego Rosso +6 more
TLDR
No significant impact of the RF treatment in preventing a decrease in alpha-fouling of the fine pore diffusers, over time in operation was observed, and reverse flexing potentially saves blower energy.About:
This article is published in Water Science and Technology.The article was published on 2017-10-09 and is currently open access. It has received 7 citations till now. The article focuses on the topics: Fine bubble diffusers & Diffuser (sewage).read more
Citations
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Journal ArticleDOI
Influence of diffuser design on selected operating variables for wastewater flotation systems: a review
M. R. Mukandi,Moses Basitere,Benjamin I. Okeleye,Boredi Silas Chidi,Seteno Karabo Obed Ntwampe,A. Thole +5 more
TL;DR: In this article, a review of diffuser design and their effect on operational parameters in wastewater treatment is presented, with a focus of their use in a column flotation system for wastewater treatment.
Journal ArticleDOI
Oxygen Transfer in Two-Stage Activated Sludge Wastewater Treatment Plants
TL;DR: In this paper, α-factors were determined with long-term ex situ steady-state off-gas measurements in pilot-scale test reactors (5.8 m height, 8.3 m3) coupled to full-scale activated sludge basins.
Journal ArticleDOI
The Changing and Distribution Laws of Oxygen Transfer Efficiency in the Full-Scale IFAS Process
TL;DR: In this paper, the authors investigated the distribution and changing laws of αOTE and αSOTE in the full-scale integrated fixed-film activated sludge (IFAS) process.
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Determination of alpha factors for monitoring of aeration systems with the ex situ off-gas method: experience from practical application and estimation of measurement uncertainty
TL;DR: In this paper , a global variance-based sensitivity analysis using Sobol' indices revealed oxygen concentration in off-gas and dissolved oxygen as the most important input quantities to determine α-factors accurately.
Journal ArticleDOI
Model-based monitoring of diffuser fouling using standard sensors.
TL;DR: In this article, the authors show that data from standard sensors (airflow rate, dissolved oxygen concentration, pressure and airflow valve position), which are fed to simple models, can track the diffuser's condition.
References
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Fouling in membrane bioreactors used in wastewater treatment
TL;DR: In this paper, a review of more than 300 publications on membrane bioreactor fouling is presented, and the authors propose updated definitions of key parameters such as critical and sustainable flux, along with standard methods to determine and measure the different fractions of the biomass.
Journal ArticleDOI
Recent advances in membrane bioreactors (MBRs): membrane fouling and membrane material.
Fangang Meng,Fangang Meng,So-Ryong Chae,Anja Drews,Matthias Kraume,Hang-Sik Shin,Fenglin Yang +6 more
TL;DR: The fouling behaviour, fouling factors and fouling control strategies were discussed, and recent developments in membrane materials including low-cost filters, membrane modification and dynamic membranes were reviewed.
BookDOI
Biological wastewater treatment.
TL;DR: In this article, a model for a Continuous Stirred Tank Reactor was proposed to evaluate the effect of suspended growth on the performance of a single-stage mixture-of-solutions.
Journal ArticleDOI
Removal of pollutants from surface water and groundwater by nanofiltration: overview of possible applications in the drinking water industry.
TL;DR: An overview of the applications in the drinking water industry that have already been realised or that are suggested on the basis of lab-scale research, and the possibility of using NF for the removal of hardness, natural organic material, micropollutants, viruses and bacteria, salinity, nitrates, and arsenic are discussed.
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Membrane fouling in a submerged membrane bioreactor (MBR) under sub-critical flux operation : Membrane foulant and gel layer characterization
TL;DR: In this article, a submerged membrane bioreactor (MBR) under sub-critical flux operation was systematically characterized, and it was found that the organic foulants coupled with inorganic precipitation enhanced the formation of gel layer and thus caused membrane fouling in the MBR.