Evaluación de la capacidad de remoción de fosfatos en aguas residuales domésticas utilizando chlorella sp
Abstract
One of the phenomena that occurs more regularly and that contributes to a great extent to the deterioration of the quality of the water is the eutrophication, propitiated by the increase of nutrients in the water, among which the phosphorus stands out. The main objective of this work was to evaluate the capacity of phosphate removal in domestic wastewater using a Chlorella sp. culture, as an alternative to facilitate the efficiency and sustainability of conventional wastewater treatment processes currently employed by companies of public service at the local level. This study was framed in experimental research in semicontrolled laboratory conditions; evaluating the cellular concentration, chloroplastic pigments, pH and phosphate concentrations in two simultaneous test experiments as the response variables i) Filtered wastewater and microalga; compared to (ii) a control treatment with only filtered wastewater, each with its respective replicate, for a period of 15 days. The results of the investigation showed that Chlorella sp. responds favorably to the conditions provided by the filtered wastewater and that the strain has the potential to remove the phosphate from domestic wastewater, taking into account that a decrease in concentration levels of phosphate ion in filtered wastewater was obtained, rising from about 57,6±1,8 mg/L at the start of the test, to 17,2±1,3 mg/L in the exponential phase, with a removal percentage up to 61%.
Collections