A novel approach for simultaneous improvement of dewaterability, post-digestion liquor properties and toluene removal from anaerobically digested sludge

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F16%3A00003277" target="_blank" >RIV/46747885:24220/16:00003277 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24620/16:00003277

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S1385894716300717" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1385894716300717</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2016.01.103" target="_blank" >10.1016/j.cej.2016.01.103</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A novel approach for simultaneous improvement of dewaterability, post-digestion liquor properties and toluene removal from anaerobically digested sludge

Popis výsledku v původním jazyce

Anaerobically digested sludge (ADS) is a major product of anaerobic digestion a widely used and economically viable microbial process used in wastewater treatment plants (WWTP) to break down biodegradable material in the absence of oxygen. Although anaerobic digestion is considered environmentally safe, the sludge often possesses undesirable properties including resistance to dewatering and high concentrations of harmful or deleterious compounds. Toluene is one of the hazardous products of anaerobic digestion that can be harmful to humans and the environment. In previous studies, it was demonstrated that persulfates: peroxydisulfate (PDS, S2O82−) and peroxymonosulfate (PMS, HSO5−) could be successfully used in the sludge treatment process. In this study, it was demonstrated that elevated temperatures from meso- or thermophilic digestion could activate persulfate creating highly reactive sulfate and hydroxyl radicals. These radicals can oxidize toluene and other organic matter in ADS thereby improving its dewaterability. Furthermore, supernatant obtained after oxidation treatment was conditioned by struvite precipitation in order to remove ammonium nitrogen and phosphates. The results of this study indicate large improvements in ADS properties after PDS treatment in comparison to PMS or temperature conditioning alone.

Název v anglickém jazyce

A novel approach for simultaneous improvement of dewaterability, post-digestion liquor properties and toluene removal from anaerobically digested sludge

Popis výsledku anglicky

Anaerobically digested sludge (ADS) is a major product of anaerobic digestion a widely used and economically viable microbial process used in wastewater treatment plants (WWTP) to break down biodegradable material in the absence of oxygen. Although anaerobic digestion is considered environmentally safe, the sludge often possesses undesirable properties including resistance to dewatering and high concentrations of harmful or deleterious compounds. Toluene is one of the hazardous products of anaerobic digestion that can be harmful to humans and the environment. In previous studies, it was demonstrated that persulfates: peroxydisulfate (PDS, S2O82−) and peroxymonosulfate (PMS, HSO5−) could be successfully used in the sludge treatment process. In this study, it was demonstrated that elevated temperatures from meso- or thermophilic digestion could activate persulfate creating highly reactive sulfate and hydroxyl radicals. These radicals can oxidize toluene and other organic matter in ADS thereby improving its dewaterability. Furthermore, supernatant obtained after oxidation treatment was conditioned by struvite precipitation in order to remove ammonium nitrogen and phosphates. The results of this study indicate large improvements in ADS properties after PDS treatment in comparison to PMS or temperature conditioning alone.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DJ - Znečištění a kontrola vody

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

—

Svazek periodika

291

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

192-198

Kód UT WoS článku

000372693100020

EID výsledku v databázi Scopus

2-s2.0-84957928554