Details

Autor(en) / Beteiligte

• Fakhru’l-Razi, Ahmadun
• Molla, Abul Hossain

Titel

Enhancement of bioseparation and dewaterability of domestic wastewater sludge by fungal treated dewatered sludge

Ist Teil von

• Journal of hazardous materials, 2007-08, Vol.147 (1), p.350-356

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2007

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• A promising biological, sustainable, non-hazardous, safe and environmental friendly management and disposal technique of domestic wastewater sludge is global expectation. Fungal entrapped biosolids as a result of prior fungal treated raw wastewater sludge was recycled to evaluate its performance as inoculum for bioseparation/bioconversion of supplemented sludge in view of continuous as well as scale up wastewater sludge treatment. Encouraging results were achieved in bioseparation of suspended solids and in dewaterability/filterability of treated domestic wastewater sludge. Fungal entrapped biosolids offered 98% removal of total suspended solids (TSS) in supplemented sludge treatment at 6-day without nutrient (wheat flour, WF) supply. Consequently, 99% removal of turbidity and 87% removal of chemical oxygen demand (COD) were achieved in supernatant of treated sludge. The lowest value (1.75 × 10 12 m/kg) of specific resistance to filtration (SRF) was observed at 6-day after treatment, which was equivalent to the 70% decrease of SRF. The all results except SRF were not influenced further in treatments accompanied with WF supplementation. The present treatments offered significant ( P ≤ 0.01) improvement in all results except SRF of treated wastewater sludge compared to the control. Furthermore, the present result is addressing a potential avenue of probable solution for expected management and disposal of domestic wastewater sludge in future.