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AKTİF ÇAMUR ÜZERİNE YÜKSEK KONSANTRASYONLARDAKİ 2.4-DKF'ÜN ETKİSİ

EFFECT OF HIGH CONCENTRATIONS OF 2.4-DCP ON ACTIVATED SLUDGE

Journal Name:

  • Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi

Publication Year:

  • 2007

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Biodegradation of 2.4-dichlorophenol (2.4-DCP) was investigated with a mixed culture in a continuous activated sludge bioreactor. Glucose was used as co-substrate. Experiments were carried out at the feed 2.4-DCP concentrations between 5-450 mg/l, and the removal efficiencies of 2.4-DCP and COD were determined. The removal efficiencies and specific removal rates of 2.4-DCP for feed 2.4-DCP concentration up to 350 mg/l varied between 96.3-98.6 % and 0.007-1.15 mg/mg X.day respectively. Removal efficiencies and specific removal rates ranged between 75.66-92.0 % and 0.43-1.29 mg/mg X.day for COD. When 2.4-DCP concentration was increased from 350 to 450 mg/l, the removal efficiency and specific removal rate of 2.4-DCP decreased to 42.6 % and 0.77 mg/mg X.day due to the substrate inhibition on the microorganisms. Also, these values decreased to 7.85 % and 0.18 mg/mg X.day for COD. These results indicate that the adaptation of activated sludge could tolerate as high as 350 mg/l 2.4-DCP concentration as to the removal of 2.4-DCP and COD.
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Abstract (Original Language): 
2.4-diklorofenol'ün (2.4-DKF) biyolojik olarak ayrışması sürekli işletimli aktif çamur biyoreaktöründe karışık kültür kullanılarak araştırılmıştır. Glikoz büyüme maddesi olarak kullanılmıştır. Deneyler 5 ile 450 mg/l aralığındaki giriş 2.4-DKF konsantrasyonlarında yapılarak, 2.4-DKF ve KOİ arıtım verimleri belirlenmiştir. 350 mg/l'ye kadar olan giriş 2.4-DKF konsantrasyonları için 2.4-DKF giderim verimleri % 96.3-98.6 aralığında ve spesifik giderim hızları 0.007-1.15 mg/mg biyokütle.gün aralığında olmuştur. KOİ için giderim verimleri % 75.66-92.0 aralığında ve spesifik giderim hızları 0.43-1.29 mg/mg biyokütle.gün aralığında olmuştur. 2.4-DKF konsantrasyonu 350 mg/l'den 450 mg/l'ye yükseltildiğinde, 2.4-DKF'ün mikroorganizmalar üzerine olan inhibe edici etkisinden dolayı 2.4-DKF giderim verimi % 42.6'ya ve spesifik giderim verimi 0.77 mg/mg.biyokütle.gün'e azalmıştır. KOİ için giderim verimi % 7.85'e ve spesifik giderim verimi 0.18 mg/mg.biyokütle.gün'e azalmıştır. Bu sonuçlar, aktif çamurun adaptasyonu ile 350 mg/l gibi yüksek 2.4-DKF konsantrasyonuna kadar 2.4-DKF ve KOİ giderim verimlerinin olumsuz olarak etkilenmediğini göstermiştir.
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