effect of dissolved air flotation process on thickening of activated sludge

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ID: 135482
2016
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Abstract
Abstract Aims: Sludge is an inescapable component of all wastewaters that originated from their treatment. dissolved air flotation (DAF) process as an alternative clarifier is used in treatment of drinking water, pretreatment of wastewater, and as a phase separator in sludge activation processes. This study aimed to calibrated the usage of DAF process in a laboratory scale and under various conditions, to achieve the optimum efficiency in recycling the activated sludge. Instrument & Methods: In this experimental study, of Kashan's Shahid Beheshti hospital and immediately transported to the laboratory. The optimal dose of polyaluminum chloride coagulant and pH was determined and then applied in DAF process. Finally turbidity, electrical conductivity (EC) and total solids (TS) parameters were measured and compared with control sample. Findings: The optimal pH and optimal dose of coagulant were 6.5 and 25mg/l, respectively. Also Optimal process efficiency to reduce EC, TS and turbidity parameters were 23.4, 44.5 and 88%, respectively. Conclusion: Dissolved air flotation process removes the turbidity, EC and TS effectively; however, it has minimal impact on EC and TS.
Reference Key
a.2016internationaleffect Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Atamaleki A.;Mostafaii Gh.R.*;Miranzadeh M.B.;Iranshahi L.;Akbari H.;Safari H.
Journal international journal of behavioral nutrition and physical activity
Year 2016
DOI
DOI not found
URL
http://iahs.kaums.ac.ir/browse.php?a_id=130&sid=1&slc_lang=en
Keywords
recycling hospitals dissolved air flotation sludgemedicine (general)

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