Effectiveness of removing microbial pollutants from wastewater by the activated sludge method

Budzińska, K.; Szejniuk, B.; Jurek, A.; Traczykowski, A.; Michalska, Magdalena; Berleć, K.

doi:10.37190/epe140405

Cited by 5 publications

(11 citation statements)

References 11 publications

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“…The effectiveness of biological treatment in the elimination of Clostridium perfringens was 90.58% (see : Tables 1 and 2). This result is comparable to literature data (Budzińska et al, 2014).…”

Section: Resultssupporting

confidence: 92%

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Evaluation of the Efficiency of Removing Sanitation Indicators in the Process of Biological Wastewater Treatment

Paśmionka¹

2020

Acta Sci. Pol. Formatio Circumiectus

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Aim of the study The aim of the study was to assess the effectiveness of biological wastewater treatment in the process of eliminating sanitation indicators at the Biological Sewage Treatment Plant in Piwniczna Zdrój. Material and methods The microbiological analyses included determinations of the following types of bacteria: the coliforms, Escherichia coli, faecal enterococci, Salmonella spp., Shigella spp. and Clostridium perfringens. The standard dilution method was used for determination of indicator bacteria (using from seven to ten dilutions). Results and conclusions The degree of contamination of raw sewage with sanitation indicators was comparable during all research series. During biological wastewater treatment, the elimination of the studied indicators was very high and remained at the level of 85-100%. The conducted analyses indicate that the tested sewage treatment plant works at a high level of elimination of microbial contaminants.

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Section: Resultssupporting

confidence: 92%

“…(97.92%) and Clostridium perfringens (98.50%) was found (see: Table 1 and 2). The efficiency of removing sanitation indicators in this research month, similarly to the previous series, is higher than the data obtained by Olańczuk-Neyman et al (2001) or Budzińska et al (2014).…”

Section: Resultscontrasting

confidence: 48%

Evaluation of the Efficiency of Removing Sanitation Indicators in the Process of Biological Wastewater Treatment

Paśmionka¹

2020

Acta Sci. Pol. Formatio Circumiectus

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“…and E. coli (Cabral, 2010;Truszczyński and Pejsak, 2015). High temperature and high humidity are conducive to their multiplication (Budzińska et al, 2014;Yao et al, 2010).…”

Section: Sources Of Microbial Air Contaminationmentioning

confidence: 99%

“…The composition of air microflora depends on the species of livestock and above all on the animals' health, microclimatic and hygiene conditions, and the quality of bedding and feed (Budzińska et al, 2014;Chang et al, 2001). Gram-positive bacteria, i.e.…”

Section: Bioaerosol Species Compositionmentioning

confidence: 99%

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Microbial contamination of the air in livestock buildings as a threat to human and animal health – a review

Chmielowiec-Korzeniowska

Trawińska

Tymczyna

et al. 2021

Annals of Animal Science

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Livestock buildings are often contaminated with bacterial and fungal microflora. Animals living in the buildings, especially their excreta and secretions and their feed, can be a source of microorganisms, including pathogens. Significant microbial contamination occurs in pig houses, poultry houses and cowsheds. The microbes most frequently isolated from the air of these buildings are bacteria of the genera Streptococcus, Staphylococcus, Bacillus, and Clostridium and of the family Enterobacteriaceae. Among fungi, the most common are Aspergillus, Trichoderma, Penicillium, Cladosporium and Alternaria. Microbes present in livestock buildings often pose a hazard to workers, in whom they can cause infectious and allergic diseases, especially respiratory disease. Bacterial endotoxins may also pose a threat to humans and animals. For this reason it is important to carry out microbiological monitoring and preventive measures on livestock farms and to maintain appropriate environmental conditions. This will reduce microbiological contamination of livestock buildings and improve both workers’ health and animal welfare.

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Efficiency of the WWTP in a Small Town of South Africa to Eradicate E. Coli

2019

SETWM-19, ACBES-19, EEHSS-19 Nov. 18-19, 2019 Johannesburg (South Africa)

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E. coli is a common Gram-negative facultative anaerobic bacterium. Its principal habitat has been identified in the intestinal tracts of mammals and birds as well as non-host environment (water/sediments). It is widely used as an indicator bacterium and its detection in water indicates possible pollution with waterborne pathogens. The organism's quantification after post treatment (chlorination) serves to evaluate the performance of a WWTP for microbial reduction. South African General Authorisation and Special standards stipulate that treated sewage effluents must have a limit of 1000 and 0 (zero) E. coli (per 100mL) respectively. This study aims at determining the efficiency of the WWTP in a small town of South Africa in eradicating the presence of E. coli through its contact tank disinfection (chlorination) process. Samples were collected for detection of E. coli using Colilert 18 method, from wastewater before chlorination and final effluent after chlorination. Physicochemical analyses were also conducted from the final effluent discharged to the river (Mooi River). The plant applies an average of 10 KG per hour of chlorine to eradicate E. coli. Since the inception of the study, up to date the plant is at an average of 48 E. coli count detected (8% compliance to zero E. coli) at the final effluent. Suspended solids which enhance the presence of these organisms were within the plant WUL at all time. An average of 3.7 mg/L of turbidity was detected. In comparison with the plant WUL, other physicochemical determinants such as pH, conductivity, nitrate, ammonia, ortho-phosphate and COD were at 100%, 100%, 7%, 97%, 100% and 100% respectively. Nitrate is also one determinant affecting the plant optimal performance. Although the average detected organisms showed to be lower, however the plant efficiency of eradicating the organisms is not efficiently meeting the regulated required limits of the plant. Such investigation is crucial in determining the compliance of the plant to its Water Use License (WUL).

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Effectiveness of removing microbial pollutants from wastewater by the activated sludge method

Cited by 5 publications

References 11 publications

Evaluation of the Efficiency of Removing Sanitation Indicators in the Process of Biological Wastewater Treatment

Evaluation of the Efficiency of Removing Sanitation Indicators in the Process of Biological Wastewater Treatment

Microbial contamination of the air in livestock buildings as a threat to human and animal health – a review

Efficiency of the WWTP in a Small Town of South Africa to Eradicate E. Coli

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