Análise dos parâmetros operacionais da qualidade da água usada nas câmaras do cultivo do camarão e tilápia: caso de estudo AQUAPESCA LDA

Abstract

This report was carried out at Aquapesca, Lda, a company dedicated to shrimp and tilapia production. production of shrimp and tilapia, located in the province of Zambézia in the district of Inhaassunge district. The evaluation of physico-chemical parameters such as: temperature, dissolved oxygen dissolved oxygen, hydrogen potential, total solids, salinity, nitrogen oxide and ammonia were evaluated. ammonia was carried out. Data was collected at 7-hour intervals between each day. The data collection method consisted of non-probabilistic sampling. These results demonstrate the importance of studies in this area in order to define the methodological procedure more precisely. The evaluation of parameters: temperature, dissolved oxygen, and transparency were determined "in situ". For for these, a sampling interval of approximately 15 days was used. and the assessment took place at three depth levels in the water column; while the assessment of nitrogen and nitrate levels took place at 17-day intervals and at two depth levels in the water column. The limnological data was collected at intervals of 7 hours between each repetition during the day. During production and processing, the water was polluted by organic matter and sodium meta bisulphite, which was then treated biologically and chemically. After carrying out the tests, it was concluded that the average pH values (8.07) were outside the standard, since the ideal is between 6 and 7. The same scenario was seen in the concentration of dissolved oxygen, which instead of being around 5.0 mg/l showed lower values (4.87 mg/l). the parameters such as Temperature, metals, TSS, salinity and nitrogen compounds showed normality, which may be the responsibility of the cultivation process. (TRADUÇAO NOSSA)