Aplica o de cloro organico no tratamento de tubogotejador utilizado na irriga o com 芍gua ferruginosa = Application of the organic chlorination in the treatment of tubedripper used in the irrigation with water high in iron content

作者：Cristiani Campos Martins; Antnio Alves Soares; Marcio Mota Ramos; Edvaldo Fialho dos Reis

来源：Acta Scientiarum - Agronomy, 2010.

• cloro
• ferro
• entupimento
• chlorine
• iron
• clogging

Para avaliar o efeito da clora o organica na uniformidade de distribui o de 芍gua e na vaz o de um tubogotejador com vaz o de 2,2 L h-1, foram testados quatro n赤veis de concentra es de dicloroisocianurato de s車dio (N1 = 0, N2 = 15, N3 = 30 e N4 =45 mg L-1 de cloro livre). As avalia es foram realizadas no in赤cio do experimento e a cada 100 horas de funcionamento do sistema, totalizando 8 avalia es. No c芍lculo da uniformidade de aplica o de 芍gua foram utilizados os coeficientes de uniformidade deChristiansen (CUC), de distribui o (CUD) e de emiss o (Us). Tamb谷m se realizou o estudo da vaz o e do coeficiente de varia o da vaz o (CVq). Verificou-se que no n赤vel N1 ocorreram redu es de 23; 30,2 e 8,35%, para o CUC, CUD e Us, respectivamente, sendo que a vaz o apresentou uma redu o de 6,13%, refletindo em um aumento do CVq. Otratamento com dicloro foi eficiente para precaver contra entupimento para todas as concentra es utilizadas e o sistema foi classificado com excelente uniformidade em praticamente todas as avalia es. To evaluate the effect of the organic chlorination in the uniformity of water distribution and in the outflow of a tubedripper with 2,2 L h-1, had been tested four levels of concentrations of dicloroisocianurato of sodium (N1 = 0, N2 = 15, N3 = 30 e N4 = 45 mg L-1 of free chlorine). The evaluations had been carried through in the beginning of the experiment and to each 100 hours of functioning of the system, totalizing 8 evaluations. In the calculation ofthe uniformity of water application had been used the coefficients of uniformity of Christiansen (CUC), of distribution (CUD) and emission (Us). Also the study of the discharge and the coefficient of variation of the discharge (CVq). It was verified that in thelevel N1, reductions of 23; 30.2 and 8.35%, for the CUC, CUD and US, respectively. The discharge presented a 6.13% reduction, reflecting in an increase of the CVq. The treatment with dicloro was efficient to prevent against clogging for all the used concentrations and thesystem was classified with excellent uniformity in practically all the evaluations.