| Summary: | Ammonia is a common contaminant found in landfill leachate. Ammonia is toxic even in
small quantity and can affect water life forms and also hazardous to human being.
Leachate is a liquid formed when water due to precipitation passes through the waste in
landfill and transport pollutant and continue to migrate to the base of the landfill cell and
often percolate into the ground thus contaminate groundwater reservoir and the
environment. In order to protect and preserve the environment, leachate must be
thoroughly treated before discharging it to the environment. A study was conducted on
removal of leachate quality parameters such as ammonia, total COD and phosphorus
concentration at Pulau Burung Level III Sanitary Landfill by physico-chemical series of
treatment starting from Magnesium Ammonium Phosphate (MAP) precipitation,
followed by aeration process and finally adsorption using natural zeolite through batch
and column test. Approximately 85-90% of ammonia was removed during the
pretreatment of MAP alone, and the COD concentrations were reduced up to 60% during
the aeration and zeolite adsorption. Phosphorus contents were no longer a threat as all the
samples were reduced to 0 mg/L for all sample. Other than obtaining a final effluent of
standard B, the treatment byproduct produced by the precipitation can be beneficial as the
sludge have the same properties that of commercial fertilizer used for agricultural
purposes.
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