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Avaliação do processo de lodos ativados operando um reator sequencial em batelada para tratamento de chorume em escala piloto
| Content Provider | Semantic Scholar |
|---|---|
| Author | Reisdörfer, Gustavo |
| Copyright Year | 2011 |
| Abstract | The disposal of solid waste in landfills can not be considered the end point of treatment, because the water originated from the degradation of waste and rain, percolates, giving rise to leachate. Leachate is a dark and cloudy liquid, unpleasant smell, and presents in its composition high contents of organic and inorganic compounds in the dissolved and colloidal forms, released in the process of garbage decomposition. The best way to determine the optimal way to treat the landfill leachate is to investigate the characteristics of each landfill. The activated sludge treatment presents itself as a versatile and efficient manner, with high removal of organic compounds and nutrients. In this context, this study sought to evaluate the treatment of manure in a sequential batch reactor (SBR) at pilot scale in order to ascertain the best operating conditions for a higher removal efficiency. The experiment was set up in the landfill of Lajeado/RS. We tested two types of sludge. The SBR had a total volume of 200 liters, useful volume of 180 liters and a working volume of 120 liters. In the first stage (RA) the sludge formed in the reactor and acclimatized for 21 days. In the second stage (RB) the sludge came from a soy protein industry. The aeration times for the two stages was 4h, 10h, 15h and 20h, with settling time of 4 hours for all cycles. For Chemical Oxygen Demand (COD), in step RA showed average removal of 18.1%, reaching peaks of 42.7% at 20 h of aeration. RB in step, the average removal of COD was found in 20.3%, but with 20 hours of aeration achieved 65% removal. Regarding the Total Kjeldahl Nitrogen (TKN), the average removal was above 90% in most cycles of RA and RB in the BD U – B ib lio te ca D ig it al d a U N IV A T ES (h tt p: //w w w .u ni va te s.b r/ bd u) removal did not exceed 33.9%. As for Total Organic Carbon (TOC) removal in RA, the mean removal was 34.5%, with peaks of 49.2% with 10 hours of aeration, and RB is the mean removal of 10.8%, with a peak of 20.6 with 20 hours of aeration. The RSB has presented itself as a major initiative for future work, to develop strategies and operating procedures for effective removal of nutrients and organic load of leachate produced in the decomposition of solid waste landfill. The RSB showed high removal efficiency of nitrogen operating at sludge produced in the reactor itself. In conclusion, the RSB has presented himself as a good alternative for the treatment of landfill leachate, however, the data presented in this experiment should be given to ways of operation to encourage joint removal of organic matter and nutrients in the leachate. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.univates.br/bdu/bitstream/10737/129/1/GustavoReisdorfer.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
