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Wetland Planted System forWetland Planted System for
Enhancing Nitrogen RemovalEnhancing Nitrogen Removal(Livestock Wastewater Management)(Livestock Wastewater Management)
By:
Jaka Darma Jaya
Retno Wulandari
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Characteristic of waste water
high content of organic
matter, nitrogen and
phosphorus may result in significant
impairment of surface
and groundwater
should be isolated andtreated prior to release
or reuse
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Nitrogen Removal
Nitrogen is one of the highest content of
livestock wastewater beside organic
matter and phosporous
Why should nitrogen be removed?
- methaemoglobinaemia (blue-baby syndrome')
- Inducing blooming of blue-green algal which can
produce hepatotoxins, neurotoxins and endotoxins
- May result in acidification in water system
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Continued(Nitrogen removal)
Biological treatment was
gaining popularity since:
- no secondary pollution- environmental friendly
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Continued(Nitrogen removal)
Problem?
(case study)
only 40% of nitrogen
was removed
by anaerobic-aerobicsystem
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Designing of
wastewater treatment systemEmploying three step wastewater treatment
Anaerobic lagoon system
Aerobic lagoon system
Wetland planted system
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Integrated wastewater
treatment system:
outputinput
150 m
150 m
2 m
100 m
50 m
7 m
Anaerobic
lagoon
Aerobic
lagoonConstructed
wetland
1.5 m
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a. Anaerobic lagoon system
commonly used for livestock waste treatment
may decompose more organic matter
can be much deeper and require less surface
(designed as 1750-2000 m3).
As lagoon capacity increases,
- odor potential, rate of sludge buildup and
pathogenic organisms decrease- nitrogen losses increase
(Barker, 1996).
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b. Aerobic lagoon system
bacterial digestion tends to be more
complete than anaerobic digestion
relatively odor-free end products water depths are rather shallow (1-2 m).
designed on the basis of surface area
rather than volume (refers to O2
need)
(Barker, 1996)
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c. Wetland planted system
Maintaining anaerobic-aerobic lagoon system
breakdown organic-based waste
Anaerobic-aerobic system which issubsequently constructed with wetland
planted system is approved in increasing
Nitrogen removal
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continued(wetland)
Nitrogen-reducing plant Cattail (Typha spp.) Bulrush (Scirpus spp.)
Smartweed (P. lapathifolium) Duckweed (Lemna spp.) Barnyard grass (E.crusgalli)(Bachand and Horne, 2000).
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Designing Wetland-Planted System
in order to obtainoptimum nitrogenremoval
Mixed-plant system will be employed
cattail (Typha spp.)grass (Echinochloa crusgalli)smartweed (Polygonum lapathifolium)
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continued(wetland)
Nitrogen-reducing plant Cattail (Typha spp.) Bulrush (Scirpus spp.) Smartweed (P. lapathifolium) Duckweed (Lemna spp.) Barnyard grass (E.crusgalli)(Bachand and Horne, 2000).
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the last
by throughing wastewater into wetlandplanted system, Nitrogen may beremoved up to the negligible
concentration (allowed level) may be discharged safely in to
environment or reused in irrigationsystem
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Thank you!
Dedicated to our beloving nation, IndonesiaDedicated to our beloving nation, Indonesia
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