Peer-reviewed veterinary case report
Removal ofspp. cysts andspp. oocysts from anaerobic effluent by dissolved air flotation.
- Journal:
- Environmental technology
- Year:
- 2021
- Authors:
- de Oliveira, Gabriela Laila & Daniel, Luiz Antonio
- Affiliation:
- Hydraulic and Sanitation Department · Brazil
Abstract
Lab-scale studies were carried out to investigate the efficiency of dissolved air flotation (DAF) for the removal ofspp. cysts andspp. oocysts from anaerobic effluent from the pilot UASB reactor. Raw wastewater, UASB and DAF effluent samples were collected weekly and protozoan (oo)cysts were concentrated using IMS followed by protozoa detection using immunofluorescense assay (IFA). The number ofspp. oocysts in the raw wastewater was always lower than that ofspp. cysts with 28-33 oocysts Land 3177-4267 cysts L, respectively. Logremoval ofcysts utilising polyaluminium chloride (PACl) was higher than that with FeCl, but no statistically significant difference between the two coagulants was observed.was absent in most of the treated effluent samples. The results indicate that DAF reached more than 2 log of cyst removal. In addition, the results demonstrated that these parasites are prevalent in the study area andand total coliforms were not good indicator microorganisms in terms of cyst and oocysts numbers.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/31136251/