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Utilization of landfill leachate parameters for pretreatment by Fenton reaction and struvite precipitation—A comparative study

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Abstract.
This paper reports results of laboratory studies on two pretreatmentmethods, struvite precipitation using
aeration with H3PO4 and Fenton oxidation. These methods utilized specific properties of the leachate:
high magnesium content (172mgL−1) for struvite precipitation and a high iron concentration (56mgL−1)
for Fenton treatment. Struvite precipitation (H3PO4, 700mgL−1) removed 36% of NH3-N and 24% of
SCOD. Fenton treatment (at pH 3.5) required 650mgL−1 of H2O2 and removed 66% of SCOD. The effect
of each pretreatment on the returned activated sludge (RAS) was evaluated using respirometry. Both
methods reduced the inhibitory effect of the leachate and substantially increased biokinetic parameters.
The BOD5/SCOD ratio increased from 0.63 for raw leachate to 0.82 (struvite) and 0.88 (Fenton). Estimation
of capital and operational costs of the total leachate treatment indicated that aeration with struvite
precipitation, followed by biological treatment, would be the preferred option.

Keywords:
Landfill leachate
Struvite precipitation
Fenton reagent
Respirometry

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Informasi Detail

Judul Seri

Journal of Hazardous Materials

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Journal of Hazardous Materials 166 (2009) 248–254

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

LINGKUNGAN HIDUP

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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