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Wetland
for single household(sample design) |
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In
order to develop a efficient and cost effective
solutions for wastewater treatment in rural
areas, ENVICARE and University of Aarhus is
in the process of developing a single household
treatment system based on the constructed
wetland technology. The scope of work is to
fulfill the demands of treatment as a ”SOP”.
The test plan is build as a two-stage vertical
constructed wetland with a post phosphor-filter.
The capacity of the test system is 10-15 persons.
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Treatment
Class
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BOD
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Total
Phosphorus
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Nitrification
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SOP
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95%
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90%
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90%
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SO
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95%
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90%
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OP
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90%
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90%
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O
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90%
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BOD
is removed in an aerobic process in vertical
filters.
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Phosphor
is precipitated as calcium phosphate in
the second step.
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Nitrogen
is transformed to nitrate by microbiological
processes in the vertical filters.
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As
the results of the recirculation nitrate
is transformed to nitrogen in the settling
tank.
The
treatment plan is controlled by computer,
and data from 20 different measuring points
is collected in a data logger. The project
is financed by the environmental agency.
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Singlehouse CW for 5 persons. (10 m2)
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