Impact of peroxydisulphate on disintegration and sedimentation properties of municipal wastewater activated sludge

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F15%3A00002100" target="_blank" >RIV/46747885:24620/15:00002100 - isvavai.cz</a>
Result on the web
<a href="http://www.degruyter.com/view/j/chempap.2015.69.issue-11/chempap-2015-0169/chempap-2015-0169.xml" target="_blank" >http://www.degruyter.com/view/j/chempap.2015.69.issue-11/chempap-2015-0169/chempap-2015-0169.xml</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1515/chempap-2015-0169" target="_blank" >10.1515/chempap-2015-0169</a>

Result language
angličtina
Original language name
Impact of peroxydisulphate on disintegration and sedimentation properties of municipal wastewater activated sludge
Original language description
In the study, a thermally activated sodium peroxydisulphate (PDS; Na2S2O8) was applied in order to disintegrate wastewater activated sludge (WAS). Chemical disintegration of WAS results in organic matter and polymer transfer from the solid phase to the liquid phase. Soluble chemical oxygen demand (SCOD) is often used to characterise the disintegration efficiency of WAS flocs and microorganisms cells. The present study was conducted in order to chemically disintegrate WAS using PDS in doses of 0.2 %, 0.4%, 0.6 %, 0.8 % and 1.0 % activated at temperatures of 50°C, 70°C and 90°C for 30 min. The temperature rise induced the PDS to form free radicals, which resulted in an increase in SCOD, i.e. for the highest dose of PDS, the SCOD value attained 2140 mg dm-3 (almost a 15-fold increase over the WAS value). A further positive effect from using this method was a decrease in the sludge volume index (SVI) from 89.8 cm3 g-1 to 30.6 cm3 g-1. On the basis of the results obtained, it may be conclu
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)