Research Article
Evaluation of Occurrence, Concentration, and Removal of Pathogenic Parasites and Fecal Coliforms in Three Waste Stabilization Pond Systems in Tanzania
Table 2
Parasite concentrations and removal in the Morogoro WSP system.
| Parasite group | Parasite species | Treatment stage | Raw wastewater | Anaerobic pond | Facultative pond | Maturation ponds |
| Helminth species concentrations (egg/L) | Ascaris lumbricoides | 12 | 0.8 | 0 | 0 | Hookworm | 0 | 0 | 0 | 0 | Trichuris trichiura | 0 | 0 | 0 | 0 | Trichostrongylus spp | 0 | 0 | 0 | 0 | Fasciola spp | 0 | 0 | 0 | 0 | Taenia spp | 0 | 0 | 0 | 0 | Total helminth concentration (egg/L) | | 12 | 0.8 | 0 | 0 | Helminth removal at each stage (%) | | | 93.3 | 100 | — | Helminth removal from raw wastewater (%) | | | 93.3 | 100 | 100 | Protozoa species concentrations ((oo)cysts/L) | Giardia lamblia | 22 | 32.4 | 5.4 | 0 | Entamoeba histolytica/dispar | 26 | 15.6 | 0.3 | 0 | Entamoeba coli | 248 | 194.8 | 47.9 | 0.8 | Cryptosporidium spp | 72 | 60.4 | 23.7 | 3.5 | Isospora spp | 0 | 0 | 0 | 0 | Total protozoa concentration ((oo)cysts/L) | | 368 | 303.2 | 77.3 | 4.3 | Protozoa removal at each stage (%) | | | 17.6 | 74.5 | 94.4 | Protozoa removal from raw wastewater (%) | | | 17.6 | 79 | 98.8 |
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