University of Oulu

Tero Luukkonen, Hanna Prokkola, Simo O. Pehkonen, Peracetic acid for conditioning of municipal wastewater sludge: Hygienization, odor control, and fertilizing properties, Waste Management, Volume 102, 2020, Pages 371-379, ISSN 0956-053X,

Peracetic acid for conditioning of municipal wastewater sludge : hygienization, odor control, and fertilizing properties

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Author: Luukkonen, Tero1; Prokkola, Hanna2; Pehkonen, Simo O.3
Organizations: 1Fibre and Particle Engineering Research Unit, University of Oulu, Finland
2Research Unit of Sustainable Chemistry, University of Oulu, Finland
3H2OPrima, Vihurintie 11, FI-70780 Kuopio, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.1 MB)
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Language: English
Published: Elsevier, 2020
Publish Date: 2019-11-13


Peracetic acid (PAA) is an environmentally friendly disinfectant and oxidizer used in several water and wastewater treatment applications. In the present study, PAA was utilized for the conditioning of municipal wastewater sludge before thickening and dewatering. It was shown that PAA can effectively prevent odor formation (i.e., H₂S and NH₃) and provide hygienization (using E. coli and Salmonella as indicators). Phytotoxicity can be prevented by controlling the amount PAA-conditioned sludge that is mixed in the soil to be fertilized. The required PAA dose for hygienization was relatively high (480 mg 100% PAA perL sludge) but the results indicated that other sludge stabilization processes are not necessarily required. Therefore, the proposed process involving PAA could be feasible in cases where limited land area is available for sludge processing or quick conditioning of sludge is required.

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Series: Waste management
ISSN: 0956-053X
ISSN-E: 1879-2456
ISSN-L: 0956-053X
Volume: 102
Pages: 371 - 379
DOI: 10.1016/j.wasman.2019.11.004
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
218 Environmental engineering
Funding: This work was supported by the Academy of Finland (grant #315103).
Academy of Finland Grant Number: 315103
Detailed Information: 315103 (Academy of Finland Funding decision)
Copyright information: © 2019 The Authors. Published by Elsevier Ltd.This is an open access article under the CC BY-NC-ND license (