| High
Rate Transpiration System: |
|
The high
rate transpiration system (HRTS) is a land application system wherin wastewater
is applied in specially
designed
field layouts with wide ridges and furrows, and planted with trees bestowed
with higher transpiration capacity.
The
HRTS envisages the use of dynamic multicomponent soil system as a live
filtration device to renovate pretreated wasterwater through absorption,
ion exchange, precipitation, and stabilisation of pollutants through microbial
degradation. Also the earthworms present in the system provide aerobic
conditions for the stabilisation of organic contents in the wastewater
through a network of furrows.
The
plants, e.g. Bamboo (Dendrocalamus strictus), Neem (Azadirachta Indica)
and Shishum (Dalbergia Sissoo) transpire
water
equivalent of 7 to 13 times of potential evapo transpiration from the soil
matrix alone. Thus, HRTS permits the
disposal
of 250-450 cubic Mt. of wastewater per hectare of land per day. As all
the wastewater is utilised in this process,
the
ground water pollution problem is avoided. The nutrients present in the
wastewater are used by the plants and partly
retained
int the soil matrix with positive impact on the soil ecosystem.
HRTS
for M/s. Sakthi Sugars Ltd
| Sr.No |
Particulars
|
Details
|
| 01 |
Location |
Sakthinagar,
Tamil Nadu, India. |
| 02 |
Wastewater
generated |
1000
m³/day |
| 03 |
Type
of Soil |
Loamy
sand, rocky below |
| 04 |
Groundwater
table |
40-70
meters |
| 05 |
Land
required @ 100 m³ / hectare |
10
hectares |
| 06 |
Prominent
plant species growing in the area |
Sugarcane,
mango, tapioco, coconut, prosopis,
Tamarind,
paddy etc. |
| 07 |
Availability
of land |
Adequate |
Trees
planted in HRTS Area at Sakthinagar
| 01 |
Neem |
1094 |
| 02 |
Casuarina |
6202 |
| 03 |
Pungan |
1381 |
| 04 |
Eucalyptus |
6636 |
| 05 |
Bamboo |
64 |
| 06 |
Maramalli |
42 |
| 07 |
Teak |
2811 |
| 08 |
Red
Sandal |
146 |
| 09 |
Mangiyam |
549 |
| 10 |
Mahogany |
40 |
| . |
Total |
18965 |
| Area
Covered under HRTS |
12.23 |
| Area
covered under KORAI |
3.00 |
|
Total
area
|
15.23 |
Advantages
of HRTS :
-
Works
on natural treatment processes and could be thus termed as eco-friendly
-
Facilitates
development of forest and green belt around factory premises
-
Generates
sink potential for air pollutants
-
Low-energy
and cost requirements compared to conventional wastewater treatment systems
-
Ease
of installation and simplicity of operations
-
Biomass
generation and revenue returns
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