Water recovery from domestic kitchen effluent through membrane separation processes

Praneeth, K, Bhargava, S, Tardio, J and Sridhar, S 2014, 'Water recovery from domestic kitchen effluent through membrane separation processes', in K. Stevenson and M. Ang (ed.) Proceedings of Chemeca 2014: Processing Excellence: Powering our Future, Perth, Australia, 28 September - 1 October 2014, pp. 1-19.


Document type: Conference Paper
Collection: Conference Papers

Title Water recovery from domestic kitchen effluent through membrane separation processes
Author(s) Praneeth, K
Bhargava, S
Tardio, J
Sridhar, S
Year 2014
Conference name Chemeca 2014: Processing Excellence: Powering our Future
Conference location Perth, Australia
Conference dates 28 September - 1 October 2014
Proceedings title Proceedings of Chemeca 2014: Processing Excellence: Powering our Future
Editor(s) K. Stevenson and M. Ang
Publisher Institution of Chemical Engineers
Place of publication Australia
Start page 1
End page 19
Total pages 19
Abstract A pilot study was conducted to evaluate the performance of submerged membrane bioreactor (SMBR) and reverse osmosis (RO) processes for treatment of domestic kitchen wastewater. Novel hollow fiber membranes were synthesized from polymer blend comprising of 10 wt% polyether imide (PEI) and 20 wt% polyethersulfone (PES) dissolved in dimethylformamide (DMF) by dry-wet spinning method and tested in an indigenously fabricated SMBR. Thin film composite (TFC) RO sheet membranes were fabricated by interfacial polymerization on PES asymmetric membrane using 1% m-phenylenediamine (MPD) in aqueous solution and 0.05% each of toulene diisocyanate (TDI) and trymesoylchloride (TMC) in hexane. An institute kitchen wastewater having contents of chemical oxygen demand (COD), Biochemical oxygen demand (BOD) and Suspended solids (SS) as 480 mg/L, 160 mg/L and 45 mg/L respectively, was taken as feed. The experimental study revealed the average value of COD outlet to be 18 and 29 mg/L while average BOD was found to be as low as 2 and 10 mg/L and SS is 2 and 1 mg/L for MBR and RO methodologies respectively. Further, development of MBR combined RO process to produce high grade water directly from domestic waste was investigated. Different strategies were studied and employed to control membrane fouling in MBR and RO. The permeate quality in terms of conductivity, turbidity, organic content and E. coli could finally meet the water quality requirements for several and non-potable reuse applications in domestic as well as industrial sectors.
Subjects Separation Science
Keyword(s) PES/PEI hollow fiber blend membranes
SMBR
COD
rejection
flux
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