Performance evaluation of hydrocyclone filter for microirrigation

Engenharia Agrícola

Damodhara R . Mailapalli²  Patricia A. A. Marques¹  Kochukaleepkal J. Thomas¹ 

[1] ,Indian Institute of Technology Department of Agriculture and Food Engineering West Bengal,India

关键词: clogging;    filtration efficiency;    solid suspension;    entupimento;    eficiência de filtragem;    sólidos em suspensão;   

DOI  :  10.1590/S0100-69162007000300006

来源: SciELO

【 摘 要 】

In this study a hydrocyclone filter of 20 cm was selected and its performance was evaluated by studying the variation of discharge, pressure drop, influent concentration, and filtration efficiency with elapsed time of operation. The filter was tested with clean water to determine clean pressure drop and later it was tested with four concentrations of solid suspension, viz. 300; 600; 900 and 1,200 mg L-1. In the concentration of 300 mg L-1, the variation of pressure drop was low. But for the other concentrations of solid suspension, the variation was significant. The maximum pressure drops obtained were 41.19, 45.11, 50.01 and 52.95 kPa at 350, 390, 280 and 190 minutes of elapsed time, respectively. The maximum efficiency of solid suspension was 30.3, 32.96, 43.89 and 52.5% where as the minimum efficiencies were 9.91, 9.93, 9.62 and 9.9%, respectively. The hydrociclone tested presented inefficiency to filter small particles as clay. The initial removal efficiency of higher concentration was bigger than for lower concentration but, the final efficiency are almost the same irrespective of the concentration of solid suspension. The present tested hydrocyclone could be used as a pre-filter microirrigation to prevent emitter clogging.

【 授权许可】

CC BY   
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