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Ranking of pre-treatment technologies for reverse osmosis for water recovery

conference contribution
posted on 2011-01-01, 00:00 authored by Santosh Pandey, Veeriah Jegatheesan, Bas BaskaranBas Baskaran, Shobha Muthukumaran
Agro-industries are a life-line for sustainable future of human kind. However, the wastewater generated by agro-industries poses direct threat to the same sustainable future by polluting the freshwater sources when discharged into those freshwater sources. Thus, we need both advanced treatment technologies to treat those wastewater streams generated and better reuse practices for the treated effluents. Reverse osmosis (RO) is one of the advanced treatments to treat dissolved solids that are present in agricultural wastewater streams. But, RO is very sensitive to suspended solids (SS) present in the wastewater streams. Those SS can foul the RO membrane and make it ineffective in producing treated effluent at desired rates. Therefore, suitable pre-treatment scheme is necessary to treat the agro-wastewater streams before passing through RO. This study focuses on the qualitative and quantitative ranking of the available conventional and modern pre-treatment technologies as pre-treatment for RO. This study considers wastewater that has been treated through a secondary treatment system for example activated sludge process as the target water that needs pre-treatment. Based on qualitative ranking of conventional pre-treatment options, the Lime clarification/Granular Media filtration (GMF) option is ranked as the best; whereas finescreens/ micro-screens option ranked as the least preferred option based on the scores they attained in treating the water quality parameters that are considered essential. Based on the quantitative ranking, the low pressure membrane technology such as ultra-filtration (UF) stood first and microfiltration (MF) stood last.

History

Event

Waste Management Problems in Agro-Industries. Symposium (8th : 2011 : Izmir, Turkey)

Pagination

463 - 470

Publisher

[IWA]

Location

Izmir, Turkey

Place of publication

[Izmir, Turkey]

Start date

2011-06-22

End date

2011-06-24

ISBN-13

9789755614007

Language

eng

Publication classification

E2 Full written paper - non-refereed / Abstract reviewed

Copyright notice

2011, IWA publishing

Title of proceedings

AGRO 2011 : Proceedings of the 8th International IWA Symposium on Waste Management Problems in Agro-Industries

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