Treatment of leachate from a solid waste landfill site using a two‐stage anaerobic filter

Document Type

Article

Publication Date

1-1-1988

Abstract

Raw leachate was treated using a two‐stage upflow anaerobic filter process. Leachate from a solid waste landfill site, which received both municipal and industrial wastes, contained high organic matter (17–21 g/L COD, 13–14 g/L BOD, and 3.5–4.6 g/L volatile acids), and low metal (Zn and Fe) concentrations. Depending on sampling time, leachate composition and characteristics varied considerably. At an organic loading up to 4 g COD/day2 media area, the BOD and COD removal percentages were 98 and 91%, respectively. The biofilters were also effective for metal removal. However, the filter effluent contained a high concentration of ammonia. System overloading was characterized by the accumulation of large quantities of volatile acids and by a now ratio of alkalinity/volatile acids, resulting in low COD removal and reduced gas production. Once the first filter was upset, the second stage could only partially respond to the volatile acids accumulated in the effluent of first filter. Copyright © 1988 John Wiley & Sons, Inc.

Identifier

0023965799 (Scopus)

Publication Title

Biotechnology and Bioengineering

External Full Text Location

https://doi.org/10.1002/bit.260310312

e-ISSN

10970290

ISSN

00063592

First Page

257

Last Page

266

Issue

3

Volume

31

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