Field testing of polymeric mesh and ash-based ceramic membranes in a membrane bioreactor (MBR) for decentralised sewage treatment
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1 janvier 2012
- handle: 10670/1.ffys0t
Mots-clés
membrane separation activated sludge, sewage treatment polymeric mesh fly ash ceramic membraneSujets proches
Mechanical properties testing Water treatment Sewage--Disinfection Effluent treatment Sewage treatment Purification of sewageCiter ce document
PK Tewari et al., « Field testing of polymeric mesh and ash-based ceramic membranes in a membrane bioreactor (MBR) for decentralised sewage treatment », Water SA, ID : 10670/1.ffys0t
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Résumé
This paper presents the initial findings of field testing of 2 low-cost membrane filters, viz. 30 μm polymeric mesh and 2-6 μηι macroporous waste-ash based ceramic filter, in a submerged membrane bioreactor (MBR) employing batch anoxic and aerobic conditions. The influent was raw wastewater from a residential complex located near Delhi, India. The results indicated that the ceramic filter was able to operate for longer periods without cleaning; however, there is a limit to the transmembrane pressure it can withstand. The suspended solids retention was high with both filters (average of 96%). Moderate reduction in chemical oxygen demand (COD), total nitrogen (NH,+) and total phosphorus (PO,³) was achieved. The improvements in operation required in such systems are also underlined.