Landfill leachate treatment with a full-scale membrane bioreactor: impact of leachate characteristics on filamentous bacteria

Bahar Yavuzturk Gul, Hazal Gulhan, Suleyman Soyel, Recep Kaya, Mustafa Evren Ersahin, Suleyman Ovez, Ismail Koyuncu*

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: ???type-name???Makalebilirkişi

1 Atıf (Scopus)

Özet

Bulking and foaming are extreme filamentous bacterial growths that present serious challenges for the biological leachate treatment process. The current study evaluates the performance of long-term full-scale membrane bioreactor (MBR) treating landfill leachate, specifically focusing on filamentous bacteria overgrowth in the bioreactors. The influence of the variation in leachate structure and operational conditions on floc morphology and filamentous bacteria overgrowth were analyzed for 11 months of operation of the full-scale MBR system. The average chemical oxygen demand (COD) and NH4-N removal efficiencies of the system were 87.8 ± 4% and 99.5 ± 0.7%. However, incomplete denitrification was observed when the F/M ratio was low. The high C/N ratio was observed to enhance the frequency of small flocs. Furthermore, a poor to medium diversity of the microbial community was observed. Haliscomenobacter hydrossis, Microthrix parvicella, and Type 021N were found as the most numerous filamentous organisms. Paramecium spp., Euplotes spp., and Aspidisca spp. were found in small quantities. The limited concentration of PO4-P in the leachate compared to high COD and NH4-N concentrations most probably caused phosphate deprivation and increased abundance of identified filamentous microorganisms. This work is the first study in Türkiye that investigates the bulking and foaming problem in full-scale MBR that treats landfill leachate. Hence, it may provide some pioneering perspectives into landfill leachate remediation by monitoring the hybrid biological system.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)91874-91886
Sayfa sayısı13
DergiEnvironmental Science and Pollution Research
Hacim30
Basın numarası40
DOI'lar
Yayın durumuYayınlandı - Ağu 2023

Bibliyografik not

Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Finansman

The authors would like to acknowledge ISTAC Inc. (Istanbul Environment Management of Industry and Trade Company) for their technical support during the sampling stage.

FinansörlerFinansör numarası
ISTAC Inc.
Istanbul Environment Management of Industry and Trade Company

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