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Sustainable Processes for Treatment of Waste Water Reverse Osmosis Concentrate to achieve Zero Waste Discharge: A Detailed Study in Water Reclamation Plant

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dc.contributor.author Sukanyah, S.
dc.contributor.author Johir, M.A.H
dc.contributor.author Listowski, A.
dc.contributor.author Vigneswaran, S.
dc.contributor.author Kandasamy, J.
dc.date.accessioned 2021-04-06T05:23:52Z
dc.date.accessioned 2022-06-27T04:05:03Z
dc.date.available 2021-04-06T05:23:52Z
dc.date.available 2022-06-27T04:05:03Z
dc.date.issued 2015
dc.identifier.issn 1878-0296
dc.identifier.uri http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/2262
dc.description.abstract Water reclamation systems based on dense membrane treatment such as reverse osmosis (RO) are being progressively applied to meet water quantity and quality requirements for a range of urban and environmental applications. The RO concentrate usually represents 25% of the feed water flow and contains the organic and inorganic contaminants at higher concentrations. The amount of RO concentrate waste water requiring disposal must be as minimal as possible (near zero-discharge); the recovery of high quality water should be as high as possible. Management issues related to proper treatment and disposal of RO concentrate are an important aspect of sustainable water reclamation practice. The RO concentrate is a significant component of water treatment process and poorly managed treatment and disposal of RO concentrate causes significant consequences. Even in a small to medium size water reclamation plant in Sydney, 2000 kL of water is treated by RO and around 300 kL of RO concentrate is produced daily. This RO concentrate consists of a high level of organics (25-30 mg/L of DOC which is mainly refractory organics) and inorganic salts (Cl- = 400-650 mg/L, Na+ = 400-500 mg/L, Ca2+ = 93-200 mg/L, K+ = 63-100 mg/L). The RO concentrate waste disposal cost can be minimized and made valuable by reclaiming the RO concentrate with the aim of producing salts from the solutes and recycling the water to the treatment system. Technologies for recovery of high salt concentration from the RO concentrate such as forward osmosis (FO) and membrane distillation (MD) are either energy intensive or not developed in large scale. In this study, we highlight a sustainable membrane adsorption hybrid system in treating this RO concentrate. en_US
dc.language.iso en en_US
dc.publisher ELSEVIER en_US
dc.subject Reverse osmosis en_US
dc.subject concentrate en_US
dc.subject membrane filtration en_US
dc.subject organic removal en_US
dc.title Sustainable Processes for Treatment of Waste Water Reverse Osmosis Concentrate to achieve Zero Waste Discharge: A Detailed Study in Water Reclamation Plant en_US
dc.type Article en_US


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