Sızıntı Suyu Arıtımı Yapan Membran Biyoreaktörlerde Membran Kirlenmesine Etki Eden Faktörler ve Tıkanma Kontrolü

Year 2017, Volume: 17 Issue: 2, 571 - 579, 31.08.2017

Hale Özgün , Mustafa Evren Erşahin Recep Kaan Dereli Burcu Atay Necati Kayaalp İsmail Koyuncu

Abstract

Katı atıkların arazide depolanması yüksek kirlilikte sızıntı suyu oluşumuna neden olduğu için yüzeysel ve yeraltı su kaynakları için önemli bir tehdit oluşturmaktadır. Diğer biyolojik arıtma yöntemleriyle karşılaştırıldığında, membran biyoreaktörler (MBR) ile yüksek kalitede arıtılmış su elde edilebildiğinden, MBR’lerin sızıntı suyu arıtımında son yıllarda daha çok tercih edildiği görülmektedir. Bu çalışmanın amacı sızıntı suyu arıtımı yapan MBR’lerde tıkanma nedenlerinin ortaya konulması ve tıkanmayı azaltmak için en uygun metodun belirlenmesidir. Sızıntı suyu arıtımı yapan tam ölçekli iki MBR tesisi (MBR-1 ve MBR-2) kıyaslandığında; karbonhidrat bazlı çözünmüş mikrobiyal ürünler (ÇMÜk) değeri MBR-2 tesisinde MBR-1’e göre yaklaşık 5 kat daha fazladır. Her iki tesis için hücre dışı polimerik maddeler (HPM) miktarında ÇMÜ miktarı kadar fark olmamakla birlikte, MBR-2’de MBR-1’e göre HPM miktarı daha yüksektir. Bu durum MBR-2’de görülen tıkanma problemlerinde, ÇMÜ’nün başlıca rol oynadığını göstermektedir. Tıkanma kontrolü ile ilgili deneysel sonuçlar dikkate alındığında, membran tıkanmasını azaltacak en uygun yöntemin 50 mg/L konsantrasyonda toz aktif karbon (TAK) eklenmesi olduğu belirlenmiştir.

Keywords

Aktif karbon, HPM, MBR, Sızıntı suyu arıtımı, ÇMÜ, Tıkanma kontrolü.

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