Analysis of Parasitic Contamination in Wastewater at the Sewage Treatment Plant in the City of Yakutsk

Municipal-domestic wastewater containing propagative forms of bio- and geohelminths which drains into and contaminates the Lena river, represents a health and epidemiological safety hazard in the Sakha Republic. This paper presents the results of a study into the parasitic contamination in the sewage of the city of Yakutsk. Data show that in the collected wastewater taken prior to treatment, as well as in the sediments recovered from the grit chambers of the water treatment plant, 100% of samples were contaminated with eggs of the Ascaris and the Diphyllobothrium species. Even after UV irradiation treatment, viable roundworm and tapeworm eggs were observed in 18% and 9% of samples, respectively.We conclude that the wastewater desinvasion methods employed in Yakutsk are ineffective at fully eradicating the causative agents of ascariasis (roundworm) and diphyllobothriasis (tapeworm), and as such are insufficient for the purposes of epidemiological safety with regards to the aforementioned forms of helminthiasis. Keywords-propagative helminth forms; diphyllobothriasis; contamination of the environment’s objects; sanitary parasitological monitoring of wastewater; sanitary parasitological indices of water quality.

Охрана окружающей среды. Экология человека

Вуз: Новосибирский государственный технический университет (НГТУ)

ID: 5f5f839eab53930001fb2627
UUID: cd0b2730-d8c7-0138-ad0d-0242ac180003
Язык: Русский
Опубликовано: около 3 лет назад
Просмотры: 31


Наталья Тоноева

Новосибирский государственный технический университет (НГТУ)


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Александра Фофанова

A very interesting article that addresses important environmental issues of the Sakha Republic. This region occupies a leading position among the subjects of the Russian Federation with intensive morbidity rates. The article says that the applied methods of water disinfection are ineffective and do not guarantee the complete destruction of pathogenic bacteria. This threat is dangerous not only for Russia, but also for the United States, Canada, France, Denmark, Sweden, Holland, Finland, and Germany.

Донцова Евгения

The author of the work showed an excellent level of knowledge of theoretical positions on the chosen research topic, showed the ability to formulate his own point of view (theoretical position) based on analysis.

Павлова Евгения

Wastewater and its sediments are epidemically significant in realizing the risk of infection of the population with parasitic diseases. An increase in the volume of discharged wastewater becomes a source of pollution of open water bodies, and pollution processes prevail over the processes of natural self-purification. According to available data, the number of pathogens of helminthiases, including those with a significant proportion of viable ones, in wastewater and sediments ranges from units to hundreds in l / kg and depends on the incidence of parasitic diseases in the population and animals in the region, climatic conditions, the degree and efficiency of treatment and disinfection of waste water, etc. The role of wastewater and their sediments in the spread of parasitoses is undeniable. This is, first of all, a transmission factor and an indicator of the presence of parasitic pathogens, reflecting the structure of the incidence of the population. Annually, on the territory of Russia, only sewage sludge up to 100 million m3 is formed, this is only 0.5-1% of the total volume of sewage.

Анастасия Милованова

This work is very interesting.

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