<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Wastewater and sewage sludge are a place of occurrence of many microorganisms, including viruses, pathogenic and relatively pathogenic bacteria. They can leak into other environments, i.e. receiver waters or soil, thus creating a biological hazard. Increasing the sanitary level of safety of municipal wastewater treatment plants requires the introduction of disinfection of sewage and sewage sludge.</p>
<p>The purpose of this article is a short review of the literature on methods used in disinfection of wastewater and sewage sludge. The work discusses the sanitary characteristics of wastewater and sewage sludge, primarily paying attention to the physical and chemical methods used to disinfect them. In addition, attention was also paid to the aspect of practical use of disinfection in municipal wastewater treatment plants around the world.</p>
</abstract>

Wastewater and sewage sludge are a place of occurrence of many microorganisms, including viruses, pathogenic and relatively pathogenic bacteria. They can leak into other environments, i.e. receiver waters or soil, thus creating a biological hazard. Increasing the sanitary level of safety of municipal wastewater treatment plants requires the introduction of disinfection of sewage and sewage sludge.
The purpose of this article is a short review of the literature on methods used in disinfection of wastewater and sewage sludge. The work discusses the sanitary characteristics of wastewater and sewage sludge, primarily paying attention to the physical and chemical methods used to disinfect them. In addition, attention was also paid to the aspect of practical use of disinfection in municipal wastewater treatment plants around the world.

Methods Used in Disinfections of Wastewater and Sewage Sludge – Short Review

Architecture, Civil Engineering, Environment

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Wastewater and sewage sludge are a place of occurrence of many microorganisms, including viruses, pathogenic and relatively pathogenic bacteria. They can leak...

Type/Genius	Reduction [%]	Source
Coliforms	10	Bitton [2011]
Faecal coliforms	35	Bitton [2011]
Escherichia coli	15	Olańczuk-Neyman and Quant [2015]
Mycobacterium tuberculosis	50	Olańczuk-Neyman and Quant [2015]
Salmonella spp.	15	Olańczuk-Neyman and Quant [2015]
Shigella spp.	15	Olańczuk-Neyman and Quant [2015]
Clostridium perfingens	60	Bitton [2011]

Organism	Type/Genus	Number in 1 g wet mass of sediment
Bacteria	E. coli	10⁶
Bacteria	Salmonella	10² – 10³
Viruses	Enteroviruses	10² – 10⁴
Protozoa	Giardia	10² – 10³
Helminths	Ascaris	10² – 10³
	Toxocara	10 – 10²
	Taenia	5

Methods used in disinfection	Disinfection of wastewater	Disinfection of sewage sludge
Chlorination	+	+
Ozonation	+	+
Performic acid (PFA)	+	-
Peracetic acid (PAA)	+	+
Pasteurization	+	+
UV radiation	+	+
Membrane methods	+	-
Ultrasounds	+	+

Methods Used in Disinfections of Wastewater and Sewage Sludge – Short Review

Article Category: research-article

Data publikacji: 21 lip 2020

Zakres stron: 57 - 63

Otrzymano: 27 mar 2020

Przyjęty: 20 maj 2020

DOI: https://doi.org/10.21307/acee-2020-017

Słowa kluczowe
Disinfection, Microorganisms, Sanitary properties, Sewage sludge, Wastewater

© 2020 Eliza Hawrylik published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Bacteria removal from wastewater in sedimentation process in the primary settling tank [21, 24]

Number of microorganisms in 1 g of wet mass of raw sewage sludge [18]

Selected methods used in disinfection of wastewater and sewage sludge

Methods Used in Disinfections of Wastewater and Sewage Sludge – Short Review

Article Category: research-article

Data publikacji: 21 lip 2020

Zakres stron: 57 - 63

Otrzymano: 27 mar 2020

Przyjęty: 20 maj 2020

DOI: https://doi.org/10.21307/acee-2020-017

Słowa kluczoweDisinfection, Microorganisms, Sanitary properties, Sewage sludge, Wastewater

© 2020 Eliza Hawrylik published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Bacteria removal from wastewater in sedimentation process in the primary settling tank [21, 24]

Number of microorganisms in 1 g of wet mass of raw sewage sludge [18]

Selected methods used in disinfection of wastewater and sewage sludge

Słowa kluczowe
Disinfection, Microorganisms, Sanitary properties, Sewage sludge, Wastewater