treatment of wastewater using photocatalysis sikder m selimuzzaman
Post on 22-Dec-2015
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Introduction
Effuent of industry is a mixture suspended, dissolved organic and inorganic pollutants
The level of treatment
PrelemineryTreatment
(rags, sticks etc.)
PrimaryTreatment(ss,om,
etc.)
SecondaryTreatment
(bio-organicMatter, ss)
TertiaryTreatment(rss, Nutrient, etc)
Advance Treatment(DM, SS)
Results and discussion(Photocatalytic degradation of S2O3: Effect of UV light and TiO2)
Time (min)
0 100 200 300 400
S2O
3 (m
g/l)
0
20
40
60
80
100
120
140
160
180
200
220
S2O3 200 mg/l [UV and TiO2]
S2O3 200 mg/l [UV and no TiO2]
Figure: Photocatalytic degradation of S2O3 and corresponding formation of SO4
Time (min)
0 20 40 60 80 100 120 140 160 180 200
S2O
3, S
O4 (
mg
/l)
0
20
40
60
80
100
120
Degradation of S2O3 100 mg/l [pH 7]
Formation of SO4 [pH 7]
Conclusions and recomendations
No S2O3 can be removed either UV or TiO2 or both.
Solar light in place of UV light lamp can be used to reduce the pollutant
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