Evaluation of the units that conform the wastewater treatment plant south Maracaibo

Cannen Cárdenas, Cristina Jaeger, Héctor Villasmil, Tomás Perruolo, Suher Yabroudi, Franklin López, Lenin Herrera, Olga Castejón

Resumen


The objetive of this study was to evaluate a waste water treatment plat, in stationary state, located in a region with tropical climate. This plant in based on stabilization ponds distributed as follows: two anaerobic units in parallel, a facultative pond, two maduration ponds in series and a pound used as the effluent storage. To do this, a series of30 sampling were made during 9 weeks of influent and effluent of the plant in order to evaluate the treatment efficiency ofthe system. Values of pH, DO, and temperature were measured in situ, and BOD, COD, P-total, NTK. Arnmonia-N, TSS, VSS, Nitrites and Nitrates, TC and FC were measured in the laboratory. These analysis were made following standardized methods. The removal values were found: BOD (77%), COD (37%). P-total (29%), NTK (56%), N-amoniacal (86%), TSS (87%). VSS (84%). TC (six logarithmic units) y FC (five logarithmic units). The generation of nitrates and nitIites was not relevant. According to effective venezuelan environmental regulations, the plant effluent can be used with agricultural purposes and/or to be discharged into a water body, such as in this case, Maracaibo's Lake.


Palabras clave


stabilization ponds; domestic waste water treatment; anaerobic ponds

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Universidad del Zulia /Venezuela/ Revista Técnica de la Facultad de Ingeniería/ revistatecnica@gmail.com /ISSN: 0254-0770

 

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