Effect of ozone on microfiltration as a pretreatment of seawater reverse osmosis

Fouling and fouling mitigation in batch reverse osmosis: review and outlook

“…The most common biocides used are free chlorine (HOCL 2 •OCL -), monochloramine (NH 2 Cl), chlorine dioxide (ClO 2 ) and ozone [135] and a lesser used 2,2-dibromo-3-nitriloproprionamide (DBNPA) [136]. DBNPA is seen as less harmful chemicals for the membrane element [135][136][137].…”

The application of pressure-driven ceramic membrane technology for the treatment of industrial wastewaters – A review

“…This method has been successfully combined with ceramic membrane filtration process for more effective treatment of industrial complex wastewaters and efficient removal of organic toxics. Majority of investigations has been applied ozonation either as pre-treatment stage for removal of toxic organics prior to the membrane filtration step [230,231]or post-treatment stage to treat both permeate and retentate [232][233][234][235][236][237]. Photocatalytic membrane reactor with immersed UV-A lamps (reproduced from [249] with permission from the Chemical Engineering Journal)…”

District Heat-Driven Water Purification via Membrane Distillation: New Possibilities for Applications in Pharmaceutical Industries

“…It was reported , that treated municipal wastewater contains a variety of drug residues, and the elimination of such substances is difficult even with modern water treatment methods. − For a complete removal of these residues, two or more techniques, mostly membrane separation and oxidation processes, are coupled. From membrane processes, it was reported that nanofiltration or reverse osmosis are efficient for removal of pharmaceuticals due to their lower pore sizes than the micro- and ultrafiltration membrane processes. , The limitations of such high-pressure driven membrane techniques are the high electric power demand, the high risk of membrane fouling by the natural organic matter, and discharge of the concentrates. , The degradation of pharmaceuticals by the oxidation procedure includes techniques such as ozonation, pretreatment or post-treatment for membrane filtration technologies, , and Fenton oxidation . Adsorption techniques are also widely used for removal of pharmaceutical residues from effluents of WWTPs.…”

“…19,20 The limitations of such high-pressure driven membrane techniques are the high electric power demand, the high risk of membrane fouling by the natural organic matter, and discharge of the concentrates. 21,22 The degradation of pharmaceuticals by the oxidation procedure includes techniques such as ozonation, pretreatment or post-treatment for membrane filtration technologies, 23,24 and Fenton oxidation. 25 Adsorption techniques are also widely used for removal of pharmaceutical residues from effluents of WWTPs.…”