Floatability of Suspended Particles from Wastewater of Natural Stone Processing by Floc-Flotation in Mechanical Cell

Yıl 2020, , 358 - 370, 31.05.2020

Tuba Taşdemir , Hande Kılıç Başaran

https://doi.org/10.31202/ecjse.644348

Öz

Flocculation and flotation
methods have been applied individually to achieve removal of suspended
particles from wastewater. However, in this study, floc-flotation method where
these two methods are applied together in mechanically agitated cell and the
use of a combinations of different type surfactant and polymer to achieve
floatability of fine particles are investigated. The conventional and floc-flotation
experiments were carried out to determine effect of different parameters such
as collector type and dosage, pH, flotation time, condition time and
polymer/surfactant interactions on floatability of very fine particles.

When the results of floc-flotation
and conventional flotation were compared,
it has been found that higher floatability
values were achieved with floc flotation. It can be obtained 96.8%
floatability of particles in presence of anionic surfactant (Aero 845, 750 g/t)
and nonionic polymer (SPP N 134, 30 g/t) at pH 8 and 5 min. conditioning time
for 5 min. flotation time by floc flotation in mechanical cell. 

Anahtar Kelimeler

Floc-flotation, Mechanical flotation cell, Fine particle, Wastewater

Mekanik Flotasyon Hücresinde Flok-flotasyonu ile Doğaltaş işleme atıksuyundan süspanse tanelerin yüzdürülmesi

Öz

Flokülasyon ve flotasyon yöntemleri, atıksulardan süspanse tanelerin
uzaklaştırılmasında ayrı ayrı uygulanan yöntemlerdir. Bununla birlikte bu
çalışmada mekanik flotasyon hücresinde bu iki yöntemin birlikte uygulandığı
flok flotasyonu yöntemi ve ince tanelerin yüzebilirliğini sağlamak için farkı
tip toplayıcı ve polimer kombinasyonlarının kullanılması araştırılmıştır. Klasik
flotasyon ve flok-flotasyonu deneyleri, toplayıcı tipi ve dozajı, pH, flotasyon
süresi, koşullandırma süresi ve polimer/ toplayıcı etkileşimleri gibi
parametrelerin ince tanelerin yüzebilirliği üzerine etkilerini belirlemek için
yürütülmüştür.

Klasik ve flok-flotasyonu deney sonuçları
karşılaştırıldığında, flok-flotasyonu ile çok daha yüksek yüzdürme değerlerine
ulaşıldığı bulunmuştur. Mekanik hücrede flok-flotasyonu ile pH 8’de 5 dakika
koşullandırma ve 5 dakika flotasyon süreleri için anyonik toplayıcı (Aero 845,
750 g/t) ve iyonlaşmayan polimer (SPP N 134, 30 g/t) kombinasyonunda tanelerin
yüzdürme verimi %96.8 olarak elde edilmiştir.  

Anahtar Kelimeler

floc-flotasyonu, mekanik flotasyon hücresi, İnce tane, Atıksu

Kaynakça

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