THE EFFECTIVITY OF BIOPORE INFILTRATION HOLE APPLICATION IN INCREASING WATER INFILTRATION RATE IN SOIL

Dien F. Awaliyah, - and Marisa Handajani, - (2015) THE EFFECTIVITY OF BIOPORE INFILTRATION HOLE APPLICATION IN INCREASING WATER INFILTRATION RATE IN SOIL. In: The 5th Environmental Technology and Management Conference “Green Technology towards Sustainable Environment, November 23 - 24, 2015,, Bandung.

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Abstract

Biopore infiltration hole (BIH) is a technology which can improve the soil quality and structure and increase the infiltration rate of the soil. The raised discussion about this infrastructure is the effectiveness of this BIH if it applied in the different soil type especially in loam soil that known having a small hydraulic conductivity. Therefore, the objective of this study is to determine in which kind of soil this BIH will perform its function more effectively.This study was carried out in three BIH with 10 cm of diameter and a depth about 60 cm at three different kind of soils (clay loam, silty loam, and loam soil). The dimension of LRB that applied was adapted from the BIH that was commonly applicate in Bandung area, and the effectivity of each BIH was examined by determined the amount of water that can be infiltrated to each BIH at the time of test.The result of this study portray that at the beginning of the test was relatively high and decrease following exponential curve to constant point. The amount of water that could be infiltrated into a week old BIH are 16.26 liter for BIH in clay loam soil, 9.965 liter for BIH in silty loam soil, and 24.087 liter for BIH in loam soil. The amount of water that can be infiltrated in each BIH increase along the time goes, except for BIH in loam soil that fall on some capacity deterioration after the fourth week.At the fourth week, the amount of water that could be infiltrated into BIH A increased 84 % to 29.953 l. for BIH B the volume increased reach 569% to 66,57 l while the capacity of BIH C which meet the deterioration is 39.874 l or still increased 65% from the first week. From this data, we can simplify that in this study, the most effective application of BIH is in silty loam soil. From this fact, we can conclude that the effectiveness of BIH that represented by the amount of water that infiltrated is vary according to the soil structure, that’s way we have to give another consideration to BIH application especially in its application at the loamy soil.

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