Coagulation/Flocculation of Slaughterhouse Wastewater Using Cottonseed as Coagulant
The objective of this study was to evaluate the influence of a natural product (cottonseed) when used as a coagulant agent in the turbidity removal from a swine slaughterhouse wastewater. The cottonseed was used as a coagulant in three preparation ways, in aqueous solution using distilled water, sal...
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Veröffentlicht in: | Nativa (Sinop) 2016-06, Vol.4 (3), p.134-138 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The objective of this study was to evaluate the influence of a natural product (cottonseed) when used as a coagulant agent in the turbidity removal from a swine slaughterhouse wastewater. The cottonseed was used as a coagulant in three preparation ways, in aqueous solution using distilled water, saline solution (NaCl - 1M) and in a solid phase. The aqueous solutions were prepared at the time of the test. Coagulation/flocculation/sedimentation tests were performed to evaluate the wastewater coagulant effect using Jar-test device, evaluating the dosages effects of 50, 100, 200, 500, 1000, 1500, 2500 and 5000 mg L super(-1) cottonseed solution (aqueous and saline) and 50, 100, 200, 500, 1000 and 1500 mg L super(-1) of solid phase cottonseed. According to the results obtained, the turbidity removals were observed when using saline solution (41.1%) with a great dosage of 1000 mg L super(-1) and mainly when using solid phase cottonseed (43.5%) with a great dosage of 100 mg L super(-1), since there is a larger contact surface, which may be considered a potential coagulant in the treatment of agro-industrial wastewater.Original Abstract: No presente trabalho, teve-se como objetivo avaliar a influencia de um produto natural (torta de algodao), quando utilizado como agente coagulante, na remocao de turbidez de efluente proveniente de um abatedouro de suinos. A torta de algodao foi utilizada como coagulante em tres formas de preparacao, em solucao aquosa utilizandose agua destilada, solucao salina (NaCl - 1M) e em fase solida. As solucoes aquosas foram preparadas no momento do ensaio. Para avaliacao do efeito do coagulante no efluente, foram realizados ensaios de coagulacao/floculacao/sedimentacao utilizando o aparelho Jar- test, sendo avaliados os efeitos das dosagens de50, 100, 200, 500, 1000, 1500, 2500 e 5000 mg L super(-1) de torta de algodao em solucao (aquosa e salina) e 50, 100, 200, 500, 1000 e 1500 mg L super(-1) de torta de algodao em fase solida. De acordo com os resultados obtidos, observou-se remocoes de turbidez quando da utilizacao da solucao salina (41,1%) com dosagem otima de 1000 mg L super(-1) e principalmente quando se utiliza a torta de algodao em fase solida (43,5%) com dosagem otima de 100 mg L super(-1), ja que ha uma maior superficie de contato, podendo este ser considerado um coagulante potencial no tratamento de efluentes agroindustriais |
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ISSN: | 2318-7670 2318-7670 |
DOI: | 10.14583/2318-7670.v04n03a03 |