Inactivation of Hepatovirus A in wastewater by 254 nm ultraviolet-C irradiation
| Autor: | Abdennaceur Hassen, Rawand Hamdi, Salah Hammami, Pierre Pothier, Nesserine Khelifi, Chourouk Ibrahim |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Health
Toxicology and Mutagenesis Sewage 010501 environmental sciences Wastewater 01 natural sciences Water Purification Environmental Chemistry Humans Hepatovirus Prospective Studies Effluent Enteric virus 0105 earth and related environmental sciences biology business.industry Faecal indicator General Medicine Pulp and paper industry biology.organism_classification Pollution Contaminated water Activated sludge Environmental science business |
| Zdroj: | Environmental science and pollution research international. 28(34) |
| ISSN: | 1614-7499 |
| Popis: | Hepatovirus A is known as a waterborne and foodborne virus that can be transmitted from one person to another through contaminated water and raw food. Therefore, it is necessary to survey the circulation of this type of enteric virus in the wastewater to prevent prospective outbreaks. Wastewater samples collected from WWTP El Menzeh I and Charguia I have been the subject for physicochemical, bacteriological (MPN) and virological analyses. Hepatovirus A (HAV) detection was carried out using the standard reverse transcription-polymerase chain reaction (RT-PCR). Hepatovirus A was detected respectively in 62% (63/102) and 66% (92/140) of the collected wastewater samples at El Menzeh I and Charguia I WWTPs. The treated effluent by natural oxidizing lagoon procedure was characterized by a poor physical-chemical and virological qualities but with excellent bacteriological quality. Consequently, this effluent is not suitable to be recycled and reused in agriculture or even dismissed in the environment. The treated sewage by activated sludge and rotating biodisk procedures turned out to be of a very good physical-chemical quality but with a poor bacteriological and virological quality. After tertiary UV-C254 nm irradiation, the faecal indicator bacteria concentration was mostly reduced and removed. These findings confirmed the need for improvement and upgrade of the treatment processes used in these two studied sewage purification plants and the necessity of implementation and establishment of a proper national virological standard to control the circulation rates of enteric viruses in Tunisian municipal wastewater. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink