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Disolución De Los Lodos Piscícolas Y Su Efecto En La Calidad Del Agua.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mera, Javier Ernesto Fernández |
| Copyright Year | 2012 |
| Abstract | Se evaluo el efecto de la disolucion de los solidos suspendidos generados en el cultivo de trucha en la calidad del agua. Lodos colectados en un estanque en concreto y en operacion con una vida media de 1 dia fueron depositados en un sistema cerrado tipo batch. El reactor opero durante 120 horas con agitacion mediante burbujeo con aire, a una temperatura controlada de 14oC. Se realizaron muestreos para determinar la concentracion de solidos disueltos y en las fracciones solida y disuelta se midieron: nitrogeno total Kjelhald (NTK) y amoniacal (NTA), fosforo total (PT) y DBO5. Se establecio que hay transferencia de contaminantes desde la fraccion solida a la disuelta. La DBO5 presenta incrementos en la fraccion disuelta, alcanzando hasta el 47% de la DBO5 total. Al realizar un analisis de las tasas de disolucion en base seca se encontro que el NTK presento una tasa de disolucion de 0,044 mg N (h*g lodo), el NTA se detecto en la fraccion soluble despues 56 horas, con una tasa de generacion de 0.068 mg N (h*g lodo)-1 y el PT alcanzo una tasa disolucion del 0.020 mg P (h*g lodo)-1. Con el fin de establecer el tiempo maximo de permanencia de los lodos en el estanque, se recomienda realizar estudios complementarios en flujo continuo. Palabras Clave: Lodo de Trucha, Nutrientes, Manejo de Solidos, Contaminacion Piscicola. ABSTRACT The effect on water quality of dissolution of suspended solids generated in trout culture was evaluated. Sludge with a half life of 1 day was collected in a raceway in operation and deposited in a closed system (batch) with a capacity of 20 L. The reactor operated for 120 hours with bubbling air stirring device at a controlled temperature of 14 oC. Samples were taken to determine the concentration of dissolved solids, solid and dissolved fractions of total nitrogen Kjelhald (TKN), ammonia (NTA), total phosphorus (TP), and BOD5. It was established the transference of contaminants from solid to the dissolve fraction. An increase of inorganic species was obtained in the soluble fraction since the beginning of the experiment. The BOD5 shows increases in dissolved fraction, representing up to 47% of the total BOD5. NTK presented a dissolution rate of 0.044 mg N (h * g sludge) -1. The NTA was detected in the soluble fraction after 56 hours, with a rate of dissolution of 0.068 mg N (h * g sludge) -1. The PT was detected in the soluble fraction at reached rate of 0.007 mg P (h * g sludge) -1. In order to establish the maximum time of sludge inside the raceway, we recommend further studies in continuous flow. Key Words: Trout Sludge, Nutrients, Solid Management, Fish Contamination. |
| File Format | PDF HTM / HTML |
| Volume Number | 6 |
| Alternate Webpage(s) | http://revistas.udenar.edu.co/index.php/reipa/article/download/1513/1852 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
