scholarly journals Ultrasound for Membrane Fouling Control in Wastewater Treatment and Protein Purification Downstream Processing Applications

2020 ◽  
Author(s):  
Amira Abdelrasoul ◽  
Huu Doan
Keyword(s):  
Wastewater Treatment ◽  
Protein Purification ◽  
Membrane Fouling ◽  
Downstream Processing ◽  
Fouling Control

scholarly journals Direct Osmosis for Reverse Osmosis Fouling Control: Principles, Applications and Recent Developments

2009 ◽  
Vol 3 (1) ◽  
pp. 8-16 ◽  
Author(s):  
Jian-Jun Qin ◽  
Boris Liberman ◽  
Kiran A. Kekre ◽  
Ado Gossan
Keyword(s):  
Wastewater Treatment ◽  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Chemical Potential ◽  
Water Desalination ◽  
Water And Wastewater Treatment ◽  
High Pressure Pump ◽  
Permeable Membrane ◽  
Fouling Control ◽  
Ro Membrane

Reverse osmosis (RO) has been widely applied in various water and wastewater treatment processes as a promising membrane technology. However, RO membrane fouling is a global issue, which limits it operating flux, decreases water production, increases power consumption and requires periodical membranes Cleaning-in-Place (CIP) procedure. This may result in low effectiveness, high cost and adds environmental issues related to the CIP solutions disposal. Forward osmosis (FO) or direct osmosis (DO) is the transport of water across a semi-permeable membrane from higher water chemical potential side to lower water chemical potential side, which phenomenon was observed in 1748. The engineered applications of FO/DO in membrane separation processes have been developed in food processing, wastewater treatment and seawater/brackish water desalination. In recent years, DO has been increasingly attractive for RO fouling control as it is highly efficient and environmentally friendly technique which is a new backwash technique via interval DO by intermittent injection of the high salinity solution without stoppage of high pressure pump or interruption of the operational process and allows keeping RO membrane continuously clean even in heavy bio-fouling conditions and operating RO membranes at high flux. This paper provides the state-of-the-art of the physical principles and applications of DO for RO fouling control as well as its strengths and limitations.

Air bubbling for membrane fouling control in a submerged direct forward osmosis system for municipal wastewater treatment

2019 ◽  
Vol 5 (4) ◽  
pp. 684-692 ◽  
Author(s):  
Yan Sun ◽  
Shanshan Gao ◽  
Jiayu Tian ◽  
Xiujuan Hao ◽  
Zhiquan Liu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Membrane Fouling ◽  
Municipal Wastewater ◽  
Water Flux ◽  
Forward Osmosis ◽  
Municipal Wastewater Treatment ◽  
Fouling Control

Air bubbling along the membrane improves water flux, alleviates the deposition of foulants and inhibits the formation of a fouling layer.

scholarly journals Membrane fouling issues in anaerobic membrane bioreactors (AnMBRs) for biogas production

2019 ◽  
Vol 1 (2) ◽  
pp. 15-19
Author(s):  
Prattakorn Sittisom ◽  
Obey Gotore ◽  
Rameshprabu Ramaraj ◽  
Giang Tran Van ◽  
Yuwalee Unpaprom ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Membrane Fouling ◽  
Ceramic Membrane ◽  
Biogas Production ◽  
Membrane Bioreactors ◽  
Future Research ◽  
Fouling Control ◽  
Conventional Activated Sludge ◽  
Research Perspectives ◽  
Anaerobic Membrane Bioreactors

Anaerobic Membrane Bioreactor (AnMBR) technology in recent years has been actively used for municipal and industrial wastewater treatment. Also, AnMBR technology has been considered as an alternative wastewater treatment application over conventional activated sludge system. AnMBRs are best possible operated with flat sheet, hollow fiber, or tubular membranes both in the microfiltration or in the ultrafiltration, but on ceramic membrane use has not been reported widely. AnMBRs are a desirable technology that needs additional research efforts and development. However, membrane fouling, which continues a major problem for all membrane bioreactors, seems much more serious under anaerobic than aerobic conditions. In this review, membrane fouling issues (including membrane fouling mechanism, classification, influent parameters, and mitigation) were discussed and summarized. Moreover, in fouling control, biogas sparging and recirculation (i.e. methane production) were addressed. Lastly, future research perspectives relating to its application and membrane fouling research are planned.

A review of anaerobic membrane bioreactors for municipal wastewater treatment with a focus on multicomponent biogas and membrane fouling control

2020 ◽  
Vol 6 (10) ◽  
pp. 2641-2663
Author(s):  
Yisong Hu ◽  
Hui Cheng ◽  
Jiayuan Ji ◽  
Yu-You Li
Keyword(s):  
Wastewater Treatment ◽  
Anaerobic Digestion ◽  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Membrane Bioreactors ◽  
Viable Alternative ◽  
Municipal Wastewater Treatment ◽  
Fouling Control ◽  
Anaerobic Membrane Bioreactors

Among the various anaerobic digestion technologies developed for wastewater treatment and resource recovery, the anaerobic membrane bioreactor (AnMBR) stands out as a viable alternative to traditional processes.

scholarly journals The use of bio-carriers and zeolite in a lab-scale MBR for membrane fouling mitigation

2018 ◽  
Vol 21 (1) ◽  
pp. 58-63
Keyword(s):  
Wastewater Treatment ◽  
Membrane Fouling ◽  
Industrial Wastewater ◽  
Municipal Wastewater ◽  
Environmentally Friendly ◽  
High Strength ◽  
Major Drawback ◽  
Widespread Application ◽  
Fouling Control ◽  
Removal Capacity

<p>The Membrane Bio-Reactor (MBR) technology offers a series of environmentally-friendly advantages, such as high quality effluent, pathogens removal capacity and avoided use of chemicals for disinfection, allowing it to be regarded as an environmentally friendly technology, when applied for wastewater treatment. However, membrane fouling still remains a major drawback, preventing its widespread application for municipal or industrial wastewater treatment. The use of additives (i.e. adsorbents, bio-carriers etc.) is considered to be among the major strategies implemented for membrane fouling control over the last few years. The present work examines the influence of bio-carriers addition, as well as of zeolite powder on the reversible and irreversible membrane fouling of a lab-scale MBR. High-strength synthetic municipal wastewater (with BOD5 around 1000 mg/L) was fed as the substrate for the activated sludge process and a flat-sheet microfiltration membrane was operated for solids (biomass) - liquid separation at the flux of 17 L/m2h. The obtained results showed that the addition of zeolite contributed mainly to the alleviation of irreversible fouling, leaving the reversible fouling practically unaffected, while the addition of bio-carriers had quite the opposite effect. In addition, it was shown that the lab-scale MBR system operated successfully, treating a high-strength synthetic municipal wastewater, as high removals were observed in terms of both organics and especially of ammonium removal (over 98%).</p>

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