D e s i g n a n d V e r i f i c a t i o n
107
Figure 14: Breakdown of total power consumption in Hoi-an Cafe
from August 5
th
, 2011 to January 31th, 2011
Results of water quality test
The miscellaneous drainage can be purified very well to incorporate the water treatment
tank with the
Bio-geo-filters
, because
phosphoric
or
nitrogen
in the wastewater that fail to
be removed in the water treatment tank are removed from the wastewater by plants—i.e.
(Y.Ozaki 1999:243-249). The water quality test of the water treatment tank and the
Bio-
geo-filters
were used
Pack-Test
. The owner can check the wastewater on site
immediately because
Pack-Test
is relatively simple test and is not less-accurate.
Although the transparency of
Sedimentation storage tank 1
was 0.2m, the transparency
of
Pump tank
was 1m or more—e.g. (Fig.15).
Nitrate nitrogen
was about 1.5ppm.
Ammonium nitrogen
was about 0.2ppm.
phosphate-
phosphorus
was 0.6ppm.
Chemical oxygen demand
(
COD
) was about 4ppm—e.g.
(Fig.16).
Figure 15: Transparency of the Sedimentation storage tank 1 and Pump tank
1096
(37%)
1902
(63%)
Blower for aeration of the water treatment tank
Others
[kWh]
Sedimentation storage tank 1
Transparency: 0.2 meter
Pump tank
Transparency: 1 meter or more
