MSc Thesis Presentation. Prepared and Presented for my VIVA defence back in 2010

2. Effect
of Integrated
Treatment System on
Poultry Litter
Leachate
SADAF LIAQUAT
Feb, 2010

3. Need of my research….
Local poultry houses are least interested in safe
disposal of poultry waste.

•odor problem,
•attraction of rodents,insects and other pests,
•release of animal pathogens,
•deterioration of biological structure of the earth
and catastrophic spills

4. This waste leaches down as run off
and poses threats to under ground as
well as surface water quality problem
in the vicinity.

situation becomes worse when water
from these reservoirs is used for
drinking purpose by the natives

5. AIM OF RESEARCH:
The aim of present study was to
treat the poultry litter leachate by
integrated system of biological and
ozone treatment to evaluate the
efficiency of these treatments.

6. Methodology
1. Sample collection
Leachte formation

7. Fabricated Leachate Making Unit

8. 2. Biological Treatment:
Leachate was Biological treated
Activated Sludge Process (ASP)

9. ASP

10. 3. Ozonation
Pre- and Post ozonation was
carried out at varied pH i.e
5,7,9 and time 18, 36, 54
respectively

12. Ozonator

13. Parameters:
•Chemical oxygen demand (COD)
•COD Abatement constant (Kcod)
•Color
•Decolorization Abatement constant (Kd)
•Total Dissolve solids (TDS)
• pH
•DO
•alkalinity
•EE/O

14. Results
•Both color and COD removal were increased
continuously with increasing ozonation.
•Reaction pH also influences on the performance
of the ozonation process
color
COLOR:
•Color removal for ASP treated ozonated
sample at pH 5, 7 and 9 were 22, 12 and 53
percent respectively. An optimal color removal
was obtained at 9 pH after 54 minutes
ozonation

15. continued
•For 54 minutes ozonation time, the color
removal at pH 5, 7, 9 and for original pH of the
raw ozonated sample was 29, 46, 29 and 40
percent respectively. An optimal color removal
of 46 percent at pH 7 is evident at 54 minutes
ozone exposure.

16. Ozonation at original pH Ozonation at pH 5 Ozonation at pH 7
Ozonation at pH 9 ASP+ Ozonation (pH 5) ASP + Ozonation (pH 7)
ASP + Ozonation (pH 9)
60
50
40
Color removal %
30
20
10
0
0 10 20 30 40 50 60
Treatment time in minutes
Effect of Ozonation on Color Removal (%)

17. COD
•COD removal for ASP treated ozonated
sample (54 minutes) at 5, 7 and 9 pH were
10, 30 and 56 percent correspondingly
•For the raw ozonated sample (54 mintues)
at original, 5, 7 and 9 pH was 31, 9, 4 and
8.

18. Ozonation at original pH Ozonation at pH 5 Ozonation at pH 7 Ozonation at pH 9
ASP+ Ozonation (pH 5) ASP + Ozonation (pH 7) ASP + Ozonation (pH 9)
60
50
40
COD removal %
30
20
10
0
0 10 20 30 40 50 60
Treatment time in minutes
Effect of ozonation on COD removal (%)

19. Ozonation at original pH Ozonation at pH 5 Ozonation at pH 7
Ozonation at pH 9 ASP+ Ozonation (pH 5) ASP + Ozonation (pH 7)
ASP + Ozonation (pH 9)
0.014
0.013
0.012
0.011
0.01
0.009
0.008
k d min-1
0.007
0.006
0.005
0.004
0.003
0.002
0.001
0
0 60 120 180 240
Flow rate min -1
Effect of ozonation on color abatement constant

20. Ozonation at original pH Ozonation at pH 5 Ozonation at pH 7 Ozonation at pH 9
ASP+ Ozonation (pH 5) ASP + Ozonation (pH 7) ASP + Ozonation (pH 9)
0.01
0.009
0.008
0.007
0.006
KCOD min -1
0.005
0.004
0.003
0.002
0.001
0
0 60 120 180
Flow rate min -1
Effect of ozonation on COD abatement constant

21. ALKALINITY
A regular decrease in alkalinity was
observed during the ozonation process from
18-54 minutes for raw as well as ASP
treated ozonated sample
Total Dissolve Solids
The increase in TDS was observed after
all the treatments

22. pH
The trend for pH in this study
decreases after every treatment
DISSOLVE OXYGEN
Constant increase was Observed

23. Conclusions
Ozonation of raw poultry leachate
sample showed greater color removal
than COD with increasing ozonation
time. Sample pH also influenced the
performance of ozonation. In this
case, optimal pH appeared to be 9 for
COD and 7 for color.

24. Continued….
Post ozonation of ASP treated wastewater
resulted in color and COD removal with
increasing ozonation bubbling time. Varied
pH influence the treatment to a great
extend.
Maximum color and COD removal was obtained
at 54 min ozone contact time at 5, 7 and 9 pH
for raw and ASP ozonated samples.

25. Continued….
Among varied pH maximum COD
and color removal was obtained at 9
pH for raw and ASP ozonated
samples due to production of
hydroxyl radicals at elevated pH.
Electrical energy comparison
demonstrated that Integrated
approach is more cost effective and
feasible option than AOPs alone

26. According to the results, it can be
concluded that integrated treatment
(biological and ozone) are more
effective in COD and color removal
than ozone alone.

27. RECOMMENDATIONS
Best cost effective treatment option for
poultry leachate sample is the integration of
biological and ozone rather than ozone alone.
Recommended optimum pH is 9 for
integrated treatment of poultry leachate
sample which should be kept in consideration
because above pH 9 decrease in COD and
color removal takes place

28. Thank you