Enhanced dewaterability of anaerobically digested sewage sludge using Acidithiobacillus ferrooxidans culture as sludge conditioner
作者： Kumarasamy Murugesan , Balasubramani Ravindran , Ammaiyappan Selvam , Mayur B. Kurade , Shuk-Man Yu
DOI: 10.1016/J.BIORTECH.2014.06.057
关键词: Sludge 、 Flocculation 、 Acidithiobacillus ferrooxidans 、 Microbiology 、 Food science 、 Chemistry 、 Specific resistance 、 Filtration
摘要: Abstract Role of Acidithiobacillus ferrooxidans culture in bioacidification and dewaterability anaerobically digested sewage sludge (ADS) was investigated. A. grown 9K medium along with Fe 2+ produced iron flocculant containing, secondary minerals biopolymeric substances as confirmed by FT-IR, XRD, SEM-EDX. Bioacidification ADS performed using 10% (v/v) culture, isolated cells cell-free filtrate; assessed the capillary suction time (CST) specific resistance to filtration (SRF). Isolated bacterial significantly ( P while whole filtrate rapidly acidified without showed significant reduction CST (71.3–73.5%) SRF (84–88%). Results clearly indicated that facilitated rapid supplemented also enhanced but required 2–4 days.
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