TIMBULAN LEACHATE DARI LANDFILL LYSIMETER DENGAN LAPISAN PENUTUP BERBAHAN DASAR LIMBAH ABU SEKAM PADI

Abstract

The purpose of this study was to determine the effect of the use of rice husk ash as a landfill
cover on the quantity and characteristics of leachate generated from landfill lysimeter. Three
lysimeters with diameter and height of 0,15 and 2 m, respectively, were prepared. Two lysimeters
were filled with municipal waste and two different cover types i.e. soil (lysimeter A) and
rice
husk ash (lysimeter B) while another lysimeter was filled solely with municipal waste
(lysimeter
C). Leachate quantities and characteristics were measured and determined once a
week.
The cumulative leachate quantity from the lysimeter B was found to 69,33% and 43,93%
less
than the lysimeter C and A
respectively.
There
were
no any differences
of the pH value of
the
leachate generated from all lysimeters. The comparison of the leachate characteristics
showed
that the lysimeter B generate the TSS concentrations 45,95% and 52,93% less than
the
lysimeter C and A
respectively,
however the TDS concentrations were
130,73% and 60,91%
more
than lysimeter C and A
respectively.
In addition, the use of rice husk ash as a landfill
cover
could reduce ± 85% of organic matter in the leachate generated.