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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