DIRECT FILTRATION OF MARBLE WASTEWATER BY GLASSY CERAMIC MEMBRANE FILTERS
Öz
Marble factories use plenty of liquid in the processes
of cutting, washing and polishing. Conventionally, pretreatment techniques such
as coagulation and flocculation have been applied and the sediment has been dewatered
by pressing. This study indicated the possibility of direct filtration of the
wastewater by glassy ceramic membrane filters. The marble wastewater obtained from Afyon
region has varied in sizes of particles in which 5% solids wt. are sub-micron
in size and the maximum size of the particles is about 100 mm. Two
different pore sizes of filters (the mean pore sizes being 1.15 mm and 0.4 mm) were tested for the filterability of
marble wastewater stream through the periodic filtrate back-flushing process.
The coarse pore size filter indicated
filtration with seriously pore clogging phenomena, thus the filter recovery
required ultrasonic application. The performance of the finer pore
size filter is superior in which non-clogging phenomena could be obtained. The
filtration capacity of the fine pore size filter was of 9 tons of filtrate per
m2 of the filter area through filtration conducted for one hour
operation. Besides the high filterability, the filter proved highly clear
filtrate (0.2 NTU turbidity).
Anahtar Kelimeler
Kaynakça
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Ayrıntılar
Birincil Dil
İngilizce
Konular
Mühendislik
Bölüm
Araştırma Makalesi
Yayımlanma Tarihi
15 Ağustos 2010
Gönderilme Tarihi
19 Mart 2010
Kabul Tarihi
23 Temmuz 2010
Yayımlandığı Sayı
Yıl 2010 Sayı: 022