Buried diffusers-advantages-compared-with-the-drip-irrigation

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www.chahtech.com

Buried
Diﬀusers
Advantages

Compared
With
The
Drip

Irriga9on

2

About
CHAHTECH

Considering
the
problems
of
water
in
the
arid
and
semi-‐
arid
regions
in
the
world,
our
team,
lead
by
Dr.

Bellachheb
CHAHBANI
(senior
scienBfic
researcher

specialized
in
water
economy
and
efficient
use
of

hydraulic
resources)
spent
more
than
25
years

experimenBng
new
techniques
for
irrigaBon
and
for
the

injecBon
of
retenBon
water
or
natural
sources
water
to

be
conserved
in
the
deep
soil
layers.
These
researches

results
are
highly
innovaBve
products
such
as
The
Buried

Diffuser
and
The
Draining
Floater.
These
worldwide

patented
(PCT)
invenBons
were
awarded
mulBple
Bmes.

Chahtech
SA
manufacture
and
distribute
worldwide
the

different
products.
The
mean
objecBves
of
these

invenBons
are:

!  Enhance
the
efficiency
of
water
resources
by
using

less
water
to
produce
more
food

!  Increase
the
producBvity
of
rain
fed
agriculture

especially
rain
fed
trees

!  Make
the
rain
fed
agriculture
sustainable
taking
in

consideraBon
the
irregularity
of
rainfall

!  Conserve
Oasis
and
combat
deserBficaBon

!  Combat
soil
salinizaBon
when
the
irrigaBon
water

contains
3
to
5
grams
salts
per
liWer

!  …

3

About
CHAHTECH

Chahbani
Technologies
was
created
with
a
high
desire
to
improve

the
human
life.
Our
core
values
are
driven
by
an
unfailing
wish
to

save
water
for
the
next
generaBons,
combat
famine,
combat

hunger,
combat
deserBficaBon...
Our
invenBons
and
commitments

were
awarded
mulBple
Bmes:

!  Laureate
of
The
African
Forum
-‐
100
innova9ons
for

sustainable
development,
Elysée
Summit
for
Peace
and
Security

in
Africa,
France.
2013

!  The
Grand
Prize
INNOVATEC
2012/2013,
MIFFEL,
Avignon,

France.
2012

!  TOP
20
Innova9ve
SME
of
InfoDev,
World
Bank,
Helsinki,

Finland.
2011

!  UNESCO
Interna9onal
Water
Prize,
Budapest,
Hungary.
2009

!  Maghreb
Union
Comba9ng
Deser9fica9on
Technologies
Prize.

2007

!  ALECSO
Prize
(Arab
League
of
EducaBon,
Cultural
and
ScienBfic

OrganizaBon)
of
scienBfic
innovaBon
in
the
field
of
water.
2002

!  Two
Silver
Medals
for
two
invenBons
-‐
30th
InternaBonal

ExhibiBon
of
InvenBons,
Geneva,
Switzerland.
2002

!  First
Prize
of
the
Tunisian
Associa9on
of
Inventors
for

researchers
inventors
granted
by
the
Tunisian
AssociaBon
of

Inventors
at
the
11th
NaBonal
CompeBBon
of
InvenBon
and

InnovaBon,
Tunisia.
2001

!  First
Prize
of
The
WIPO
(World
Intellectual
Property

OrganizaBon)
for
the
best
invenBon
by
an
inventor
researcher
at

the
11th
NaBonal
CompeBBon
of
InvenBon
and
InnovaBon.

Tunisia.
2001

!  Mediterranean
Prize
for
Water
award
from
the
Carrefour
Euro

Mediterranean
Water
HYDROTOP

!  ...

4

The
Buried
Diffuser

The
Buried
Diffuser
is
a
new
underground
irrigaBon

technique
which
can
be
used
for
trees
(fruit
trees,

forest
trees,
ornamental
trees)
and
shrubs,

vegetables
in
fields
and
in
green
houses
and
plants
in

containers,
pots
or
boxes.
The
Buried
Diffuser
is,
with

no
doubt,
the
most
efficient
technique
to
bring
water

to
the
roots.
In
few
words,
The
Buried
Diffuser
is:

!  New
solu9on
to
save
irriga9on
water,
energy,

fer9lizer,
etc.

!  0%
waste
by
evapora9on

!  2
9mes
less
water
than
the
drip
method

!  3
to
5
9mes
more
yield
than
drip
irriga9on

!  Very
simple
installa9on
and
use

!  Not
expensive

!  Innova9ve
with
high
commercial
poten9al

!  Most
effec9ve
underground
irriga9on
system

!  Allows
An9cipated
Irriga9on
during
the
rain

period
and
no
irriga9on
during
the
dry
period

!  Allows
The
injec9on
and
the
conserva9on
of

water
in
the
deep
soil
layers

5

The
Buried
Diffuser

We
design
and
manufacture
three
different

Buried
Diffusers.
Each
one
has
its
own
technical

details
which
make
it
the
most
efficient
for
its

specific
uses.

Trees
Buried
Diffuser

Vegetables
Buried
Diffuser

Container
Plants
Diffuser

6

The
Buried
Diﬀuser

Advantages
of

The
Buried

Diﬀuser

7

The
Buried
Diﬀuser

Once
The

Buried

Diﬀuser
is

correctly

installed,
no

maintenance

is
needed.

8

The
Buried
Diffuser

Substan9al
water
saving

The
water
saving
reaches
100%
(0%
evaporaBon),
thus
the

irrigaBon
frequency
is
considerably
reduced.
The
Buried
Diffuser

uses
only
30%
of
the
water
amount
used
by
drip
irrigaBon
to

produce
the
same
weight
of
crop.
Because
water
losses
due
to

evaporaBon,
deep
percolaBon
and
runoff
are
minimized.

The
comparison
of
Buried
Diffuser
with
surface
and
drip
irrigaBon,

during
2
months
of
summer
2012,
demonstrates
the
superiority
of

the
diffuser
in
water
conservaBon.
61
days
aher
the
irrigaBon,
The

Buried
Diffuser
allowed
to
conserve
34
%
of
the
iniBal
irrigaBon

water
amount
when
the
surface
irrigaBon
allowed
only
3,4%
and

the
drip
irrigaBon
allowed
8%.

Higher
yields

Water
and
nutrients
delivered
directly
to
the
root
zone
promote

healthy
plant
growth
and
reduce
plant
stress.

Healthier
and
beYer
quality
crops

Soil
and
foliage
are
kept
dry,
reducing
fungal
diseases
caused
by

surface
or
overhead
irrigaBon.
Eliminates
fruit
and
vegetable

spoing.

Improved
soil
aera9on

Fine
soil
parBcles
are
not
washed
down,
decreasing
soil
compacBon

and
improving
root
growth.

9

The
Buried
Diffuser

Melon and pimentos in
greenhouse irrigated
with Buried Diffusers!
The
Buried
Diffuser
reduces
diseases
because
there
is
no

weWed
soil
and
no
weeds.
In
green
houses,
since
there
is

no
water
evaporaBon
from
The
Buried
Diffuser,
water

vapor
in
the
atmosphere
is
considerably
decreased.
This

reduces
the
appearance
and
propagaBon
of
diseases

such
us
mildew.

This
low
rate
of
water
vapor
inside
the
greenhouses,

facilitates
the
movement
of
pollen
and
increase
the
rate

of
flowers
producing
fruits.

10

The
Buried
Diffuser

Important
reduc9on
of
labor
for
the
maintenance
of

soil

Less
weeds
pulling
out,
less
irrigaBon
frequency,
less
mulching

acBons,
easier
ferBlizer
applicaBon,
less
weed
and
disease
control

and
less
maintenance,
which
means
less
handling.

Important
Energy
saving

The
pumping
Bme
is
less
important
because
of
the
reducBon
of

needed
irrigaBon
water.
In
addiBon
to
that
the
energy
saving
is

higher
when
the
diffuser
works
with
gravity.
In
addiBon
of
using

convenBonal
pressure
(1-‐2
bars).
The
Buried
Diffuser
operates
at
low

pressure
(0.02
-‐
0,2
bar).
The
water
comes
from
a
simple
barrel
or

tank
(100
-‐
5000
liters)
placed
on
the
soil
surface.
In
this
case
the

irrigaBon
is
done
by
gravity
and
does
not
need
pumping.
This
induces

important
energy
saving.

Important
reduc9on
of
fer9lizers
amounts

Less
degradaBon
of
the
ferBlizers
and
less
loss
by
leaching.
FerBlizers

are
directly
delivered
to
the
roots.
Reduced
nutrient
amounts

without
yield
reducBon.

Longer
life
for
water
distribu9on
pipes

All
the
network
could
be
totally
buried
(20
cm
below
the

topographic
surface).
Less
animal,
human,
sun
or
mechanical

damage.
The
irrigaBon
water
distribuBon
network
of
The
Buried

Diffusers
could
be
totally
buried
(20
cm
below
the
topographic

surface).
This
avoids
the
damages
caused
by
animals
(dogs,
foxes

etc.)
or
human
beings.

11

The
Buried
Diffuser

An
important
reduc9on
of
the
number
of

irriga9ons:
This
is
a
result
of
water
saving
which

prolongs
the
duraBon
between
two
irrigaBons.

This
was
confirmed
by
the
comparison
of
irrigaBon

of
ornamental
plants
in
containers
using
surface

irrigaBon
and
Buried
Diffusers.
The
results
of
this

trial
show:

!  Aher
2
months,
the
water
content
in
the

containers
irrigated
by
Buried
Diffusers
is
89%

and
91%.
For
the
surface
irrigaBon
the
values

are
respecBvely
51%
and
54%

!  Aher
4
months,
the
water
content
in
the

containers
is
22,6%
and
20,6%
for
the
surface

irrigaBon
and
81%
and
84%
for
The
Buried

Diffuser

This
means
that
in
a
programmed
irriga9on,

when
the
water
content
in
the
containers
reaches

50%
of
the
field
capacity,
the
periodicity
of

irriga9on
is
2
months
for
the
surface
irriga9on

and
6
months
for
the
Buried
Diffuser.

12

The
Buried
Diffuser

An
important
reduc9on
of
number
of
irriga9ons

This
is
a
result
of
water
saving
which
prolongs
the
duraBon

between
two
irrigaBons.

For
trees
plantaBons
irrigated
with

Buried
Diffusers,
if
the
soil
(below
50
cm
deep)
is
thick
(1
meter

or
more)
and
has
minimum
10%
clay,
the
irrigaBon
is
once
per

month
(12
irrigaBons
per
year)
or
one
per
3
months
(4

irrigaBons
per
year).

Important
reduc9on
of
soil
saliniza9on

When
using
salty
irrigaBon
water
(3
to
5
grams
salt
per
liWer),

this
reducBon
is
esBmated
to
9000
kilograms
per
year
and
per

hectare
(with
irrigaBon
volume
of
10000
cubic
meters
with
3

grams
per
liWers
salts,
3000
cubic
meters
of
the
volume
are

evaporated).

Less
water
distribu9on
pipes
lines

Only
one
pipeline
is
needed
instead
of
2
or
4
pipelines
for
drip

irrigaBon.

Important
reduc9on
of
Herbicides
and
pes9cides

No
weeds
for
vegetable
fields
and
trees
plantaBons,
this
is
a

great
contribuBon
in
the
protecBon
of
the
environment.

BeYer
Look

The
irrigaBon
water
distribuBon
network
could
be
totally
buried

(20
cm
below
the
topographic
surface)
when
using
Buried

Diffusers.

13

The
Buried
Diﬀuser

The
Buried
Diﬀuser
is
recommended
for
organic

farming
because
it
reduces
weeds
and
diseases

development.
This
helps
a
beYer
growth
of
the

plants
without
using
herbicides,
pes9cides
and

other
chemical
products.

14

The
Buried
Diffuser

Irriga9on

technique

Volume
of

irriga9on
water

per
plant

(in
liter)

Total
produc9on
in

for
112
plants

(in
kilograms)

Buried
Diffuser
500
716

Drip
500
141

Buried
Diffuser
250
382

Drip
250
103

Trial
results
of
comparison
of
irriga9on
by
drip
and
by
Buried

Diffusers
in
the
greenhouse
of
farmer
field
in
Region
Maatoug

(Desert
of
south
of
Tunisia)

The
Buried
Diffuser
produces
3
to
5
&mes

more
yield
than
the
drip
method.

15

The
Buried
Diffuser

You
can
measure
the
superiority
of
The
Buried
Diffuser

compared
to
all
other
irritaBon
irrigaBon
systems
by

doing
a
simple
trial
(with
one
or
many
trees
of
the
same

size)
with
4
plots.

!   In
the
first
plot,
trees
irrigated
with
The
Buried

Diffuser.

!   In
the
second
plot,
trees
irrigated
with
another

irrigaBon
technique.

The
first
and
the
second
plot
have
to
be
irrigated
with

the
same
water
volume
(V)
during
a
year.

!   In
a
third
plot,
trees
irrigated
with
30%
of
water

volume
(V)
using
The
Buried
Diffuser.

!   In
a
forth
plot,
trees
irrigated
with
30%
of
water

volume
(V)
using
another
technique.

Aher
the
harvest
you
compare
the
yield
in
the
different

plots.

Try
it,
you
will
Adopt
it

16

The
Buried
Diffuser

The
diffusers
include
small
water

reservoirs
to
be
filled
during
the

irrigaBon.
For
the
first
use,
the

Diffuser
will
irrigate
unBl
the
soil

(contained
in
the
containers,
boxes

or
pots)
is
completely
weWed.
The

moisture
of
the
container
soil,
aher

the
irrigaBon
using
the
diffusers,
is

sufficient
for
several
days
or
weeks.

The
dura9on
between
2
irriga9ons
is
at
least

3
9mes
longer
than
the
exis9ng
irrita9on

irriga9on
methods
(capillarity,
surface,

dripping…).

The
Buried
Diffusers
for

containers
can
also
be
used

to
produce
vegetables
in
the

balcony
of
apartments
or

individual
houses.

17

Chahtech
Blog

+BellachhebChahbani

Chahtech
Channel

@ChahbaniT

LinkedIn
Proﬁle

Dr.
Bellachheb
CHAHBANI

CEO
&
Founder

Email:
bchahbani@chahtech.com

Skype:
lachheb25

Tel:
+216
98
25
43
83

Web:
www.chahtech.com

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