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Considering the problems of water in the arid and semi arid regions in the world, our team (lead by senior scientific researchers specialized in water economy and efficient use of hydraulic resources), spent more than 25 years experimenting new techniques for irrigation and for the injection of retention water or natural sources water to be conserved in the deep soil. These researches results are an innovative technique which is called: The Buried Diffuser. This worldwide patented (PCT) invention was awarded multiple times.
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Dr. Bellachheb CHAHBANICEO & Founder
www.chahtech.comwww.chahtech.com
December 2013
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Introduction
The Buried Diffuser
The Draining Floater
Markets &
Partners
R&D next steps
Conclusion
www.chahtech.com
3
Introduction
The Buried Diffuser
The Draining Floater
Markets &
Partners
R&D next steps
Conclusion
www.chahtech.com
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Introduction
www.chahtech.com
CHAHTECH SA is a Tunisian company specialized in inventing and manufacturing innovative irrigation systems.
More than 25 years spent studying and experimenting new techniques for the irrigation and for the water conservation.
Lead by Dr. Bellachheb CHAHBANI (senior scientific researcher specialized in water economy and efficient use of hydraulic resources) - PhD in Agronomy from Gent University in Belgium.
Won many prestigious awards: Laureate of The African Forum - 100 innovations for sustainable development,
Elysée Summit for Peace and Security in Africa, France. 2013 Grand Prix INNOVATEC 2012/2013, MIFFEL, Avignon, France. 2012 TOP 20 Innovative SME of InfoDev, World Bank, Helsinki, Finland. 2011 UNESCO International Water Prize, Budapest, Hungary. 2009 Maghreb union combating desertification Technologies Prize. 2007 …
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CHAHTECH studies any request and establishes a concrete short, mid and long-term plan in order to achieve goals.
Better water management (efficiency, productivity, economy, saving…) Friendly environment irrigation (responsible water consumption)Techniques to combat desertification, hunger, famine and food scarcitySustainable agriculture (irrigated and rain fed) although the climate change and the droughts…
Services
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The sustainability of Water Resources
The sustainability of crops in rain fed and irrigated agriculture
Drought and desertification mitigation
Climate change adaptation
Innovative and Efficient Technologies
www.chahtech.com 6
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Introduction
The Buried Diffuser
The Draining Floater
Markets &
Partners
R&D next steps
Conclusion
www.chahtech.com
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New solution for underground irrigation0% water waste by evaporation2 times less water than drip irrigation3 to 5 times more yields than drip
irrigationDifferent models for various usesWorldwide patented Technologie (PCT)…
www.chahtech.com
The Buried Diffuser
1. Permanent and complementary irrigation of orchard2. Permanent irrigation of vegetables in fields and in
green houses3. Irrigation of plants in containers4. Landscaping5. Injection and storage of water (from rivers water,
springs, dams…) in the deep soil layers6. Anticipated irrigation for orchard or forestry
plantations and annual crops
Uses of The Buried Diffuser
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1. Permanent and complementary irrigation of orchard2. Permanent irrigation of vegetables in fields and in
green houses3. Irrigation of plants in containers4. Landscaping5. Injection and storage of water (from rivers water,
springs, dams…) in the deep soil layers6. Anticipated irrigation for orchard or forestry
plantations and annual crops
Uses of The Buried Diffuser
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The Trees Buried Diffuser can be used for all kind of trees such as banana, mango, papaya, litchi, guava, avocado, ficus indica, pomegranate, date palm, oil palm, apple, apricot, grape, olive, orange, citrus, almond, nut, pear, fig, etc.
Distribution water pipe (PEHD 16 or 20 mm)
PEHD pipe (16mm)
Diffuser
Water flow regulator
Cork 16 mm
Flexible tube 6mm
15x30 Tree Model 15x15 Tree Model
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Distribution water pipe
(PEHD 16 or 20 mm)
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Soil SurfaceBuried diffusers at 50/60 cm below the soil surface
Irrigation Water distribution in the deep soil layers
Water reservoir
Deep roots system using infiltrated water of The Buried Diffuser
Moistered (wetted) soil layers after the irrigation by Buried Diffusers
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Gravity irrigation of trees using Diffusers connected to low pressure (0,2 bar) water distribution network using
water of a reservoir
Gravel Filter Tape
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Water tap
Gravel filter
Masonry water reservoir (max height 2m)Main water distribution
plastic tube (diameter 50/75mm)
Trees with 3 buried diffuser
Water distribution Plastic tube (diameter 16/20mm)
Plan view of trees irrigation with buried diffusers using gravity water flowing (from a reservoir built on the topographic soil level) and low water pressure (0,1bar)
Installing The Buried Diffuser for Almonds Trees
- Montpellier (France)16www.chahtech.com
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Installing The Buried Diffuser for citrus and orange trees
- Beni Khalled (Tunisia)
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Installing The Buried Diffuser for Olive trees - Sfax (south of Tunisia)
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Adult Olive trees plantation irrigated using Buried Diffusers - North of Tunisia
When The Buried Diffuser works with gravity:
•No needed energy•No CO2 emission•No maintenance
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Gravity (0.2 bar) irrigation of an Olive tree equipped with 3 Buried Diffusers.
The water comes from a plastic reservoir of 1000 litters.
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Installing The Buried Diffuser for Date palm trees – Douz Oasis
(Tunisian Desert)
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Installing The Buried Diffuser for Date palm trees - Douz oasis (Tunisian Desert)
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Young Orange Trees irrigated using Buried Diffusers - Private garden in Djerba (South of Tunisia)
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Ornamental plant and grapes irrigated with Buried Diffusers - Zagora (South of Morocco)
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Important water saving
The water saving reaches 100% (0% evaporation), thus the irrigation frequency is considerably reduced.
Important Energy saving
The pumping time is less important because of the reduction of needed irrigation water. In addition to that the energy saving is higher when the diffuser works with gravity.
Important reduction of labour for the
maintenance of soilLess weeds pulling out, less irrigation frequency, less mulching actions, etc.
Important reduction of fertilizers
amountsLess degradation of the fertilizers and less loss by leaching. Fertilizers are directly delivered to the roots
Longer life for water distribution pipes
All the network could be totally buried (20 cm below the topographic surface).
Important reduction of Herbicides and
pesticidesNo weeds for vegetable fields and trees plantations, this is a great contribution in the protection of the environment.
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1. Permanent and complementary irrigation of orchard2. Permanent irrigation of vegetables in fields and
in green houses3. Irrigation of plants in containers4. Landscaping5. Injection and storage of water (from rivers water,
springs, dams…) in the deep soil layers6. Anticipated irrigation for orchard or forestry
plantations and annual crops
The Buried Diffuser
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The Vegetables Buried Diffuser can be used for many vegetables such us pimentos, melon, water melon, cucumber, tomatoes, marrow, courgette, gumbo, potatoes…
Distribution water pipe (PEHD 16 or 20 mm)
PEHD pipe (16mm) 10 cm
Diffuser
Water flow regulator
Flexible tube 6mm
15x30 Vegetables Model
15x15 Vegetables Model
Cork 16 mm
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Plant emplacement
Water distribution area
15x15 Buried Diffuser at 10/15 cm below the soil surface
Distribution water pipe (PEHD 16 or 20 mm)
Soil
Plant (Tomatoes, Melon, pimentos…)
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Soil Surface
15x30 Diffuser for 2 plants
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Gravity irrigation of vegetables using 15x30 Buried Diffusers connected to low pressure (0.2 bar) water distribution network
using the water of a reservoir
15x15 Diffuser for 1 plant
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50cm
30cm
Water distribution Plastic tube (diameter
16/20mm) 30cm
Water tap
Masonry water
reservoir (Max
height 3m)
Gravel filter
Mean water distribution plastic tube (diameter 50/75mm)
Flexible PVC pipe (diameter
6mm)
Trench 10 cm deep receiving the diffusers
Diffuser for 2 vegetable plants
Plan view of vegetables irrigation with Buried Diffusers using gravity water flowing (from a reservoir built on the topographic soil level) and low water pressure (0,1bar)
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Trial results of comparison of irrigation by drip and by Buried Diffusers in the greenhouse of farmer field in Region Maatoug (Desert of south of
Tunisia)
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The Buried Diffuser produces 3 to 5 times more yield than the drip method.
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Decreased water cost
The water saving reaches 100% (0% evaporation), thus the irrigation frequency is considerably reduced.
Increased revenues from increased
yieldsCrop productivity increasing 3 to 5 times more than when using the drip while reducing 2 times less the irrigation water.Healthier plants and
better quality crops
Soil and foliage are kept dry, reducing fungal diseases caused by surface or overhead irrigation. Eliminates fruit and vegetable spotting.
Decreased Labor cost
Less irrigation tasks, easier fertilizer application, less weeds and diseases control…
Decreased pesticides and herbicides
amountsNo weeds in the irrigation by buried diffuser (for vegetable fields and trees plantations), this is a great contribution in the protection of the environment.
Reduction of water vapor inside the
greenhousesThis has a good impact by reducing the development of diseases. This low rate of water vapor inside the greenhouses, facilitates the movement of pollen and increase the rate of flowers producing fruits.
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1. Permanent and complementary irrigation of orchard2. Permanent irrigation of vegetables in fields and in
green houses3. Irrigation of plants in containers4. Landscaping5. Injection and storage of water (from rivers water,
springs, dams…) in the deep soil layers6. Anticipated irrigation for orchard or forestry
plantations and annual crops
The Buried Diffuser
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The Buried Diffuser (with reservoir) for plants in containers, pots and boxes can be used indoor or outdoor for ornamental plants and vegetables in administration, houses, nurseries…
Buried Diffusers of potted plants include small water reservoirs.
The moisture of the container soil, after the irrigation, is sufficient for several days or weeks.
The Buried Diffuser for potted plants
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The duration between 2 irrigations is at least 3 times longer than the existing irritation irrigation methods (capillarity, surface, dripping…).
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Easy installation and use
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Different ornamental plants in containers irrigated with Buried Diffuser with reservoir
indoor and outdoor
Indoor
Outdoor
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The Buried Diffusers for containers can also be used to produce vegetables in the balcony of apartments or individual houses.
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The Buried Diffuser with
reservoir for pot reduces the irrigation
frequency Only one irrigation per month instead of
one irrigation every week
The Buried Diffuser with
reservoir for pot reduces the irrigation
frequency Only one irrigation per month instead of
one irrigation every week
Evolution of water amounts in ornamental plants containers irrigated with surface irrigation, drip
and buried diffuser, outdoor on the roof of a building – Medenine (South of Tunisia)
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1. Permanent and complementary irrigation of orchard2. Permanent irrigation of vegetables in fields and in
green houses3. Irrigation of plants in containers4. Landscaping5. Injection and storage of water (from rivers water,
springs, dams…) in the deep soil layers6. Anticipated irrigation for orchard or forestry
plantations and annual crops
The Buried Diffuser
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Landscaping
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All Buried Diffuser models are highly recommended for landscaping. The benefits are huge:
Water savingEnergy saving (can be automated using gravity)Better look (pipelines are buried)No weeds…
Landscaping
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Buried Diffuser models can be used for personal gardens, roundabouts, public gardens, parks…
1. Permanent and complementary irrigation of orchard2. Permanent irrigation of vegetables in fields and in
green houses3. Irrigation of plants in containers4. Landscaping5. Injection and storage of water (from rivers
water, springs, dams…) in the deep soil layers6. Anticipated irrigation for orchard or forestry
plantations and annual crops
The Buried Diffuser
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During 2012 north of Tunisia got exceptional heavy rains. This generated catastrophic floods in many cities.
The water flow of Medjerda River reached 300 cubic meters per second during 10 days (none stop).
According to this flow 10 800 000 cubic meters have been evacuated to the Mediterranean Sea.
This big amount of lost water, if injected in the deep soil layers of the plantations, is sufficient to maintain 540 000 adult olive trees in good production conditions during 3 successive dry years.
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The water flowing from the natural springs and not used during the autumn, winter and the beginning of spring is lost in the rivers. This lost water is estimated 23 328 m3 (from September till May) for a spring with a flow of 1 litter/second.
If this volume is injected in the soil horizons, using buried diffusers, it is sufficient for the water needs of about 518 adult olive trees during 3 dry years (without any rain).
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Drought 2002 in South Tunisia
starving olive tree (95% of the aerial biomass is dry) during a long period of successive dry years.
Drought 2002 in Center Tunisia
hills lakes are empty and the irrigated agriculture based on the water of these lakes is in crisis: no production of vegetables and fruits.
Drought in China Summer 2007
Farmers in Wangcheng (center of China) transporting water from a lake, during long and severe drought.
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Rainfall during normal year 300 mm
Rainfall during rainy year 300 mm
Rainfall during normal year 600 mm
Annual Runoff 60 mm (20%) 155 mm (33%) 200 mm (66%)
Potential water to be stored
420 000 Cubic meters
1 050 000 Cubic meters
1 400 000 Cubic meters
Effective stored water
420 000 450 000 450 000
Lost water 0 600 000 950 000
Data for a hill lake with watershed covering 700 hectares and 300 000 Cubic meters as retention capacity
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The lost water during 1 rainy and 1 very rainy year is 1 550 000 Cubic meters.
This volume can be injected and stored in deep layers of the soil using The Buried Diffuser.
The injection of 1 550 000 Cubic meters is sufficient to maintain in good conditions of production 34 444 adult olive trees during 3 dry years (each tree has 15 Cubic meters per year)
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1. Permanent and complementary irrigation of orchard2. Permanent irrigation of vegetables in fields and in
green houses3. Irrigation of plants in containers4. Landscaping5. Injection and storage of water (from rivers water,
springs, dams…) in the deep soil layers6. Anticipated irrigation for orchard or forestry
plantations and annual crops
The Buried Diffuser
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Instead of irrigation during the hot or the dry season, the irrigation using Buried Diffusers is done during the autumn and winter or during the rainy season.
The amount of water of the Anticipated Irrigation should cover the total need of the crop during the hot or dry season (spring and summer).
This water amount is stored in the deep soil layers will be used by the deep or sub surface roots systems of the crops.
Anticipated Irrigation
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Cross section of Anticipated Irrigation or Water Injection system using Buried Diffusers
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Re greening of the Olive tree during 2 months (February 15th - April 15th 2013) with 2 Buried Diffusers
Olive tree suffering from drought: 75% of the leaves are completely dried - February 15th 2013
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Introduction
The Buried Diffuser
The Draining Floater
Markets &
Partners
R&D next steps
Conclusion
www.chahtech.com
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The Draining Floater
Pump and distribute water without any energy
No C02 emissionNo maintenance costEasy installation and useDifferent models for different usesWorldwide patented Technology (PCT)…
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Gravity pumping and distribution of the natural spring’s water and rivers, the retention Water of the hill lakes, dams and other similar (small Sized) Runoff water retention managements.
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Middle sized Draining Floater for middle dams (1000 till 10000 cubic meters)
Part of the siphon in connection with the atmosphere
Draining Floater
Water flowing regulation tap
Inclined pipeGravity water
flowing
Siphon primingOrifice
Siphon priming tap
Water reservoir
Topographic surface Horizontal line
Components of draining floater using the siphon principle
Part of the siphon immerged in the
liquid
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Big sized draining floater for big dams and rivers
Small sized draining floater for small water rain water storage concrete
reservoirs
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Schematic design of river’s water pumping and distribution using The Draining Floater
Storage Reservoir
Hill lake
Draining Floater
Draining Floater pipes Buried mean pipes for water
distribution to HDPE pipes (16 or 20 mm diameter) network
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Installation and stating up The Draining Floater in a hill lake – Sidi Bouzid (center of Tunisia)
Connection of tubes to the floater and the tubes collector
Fixing the handrail to footbridge
Water is flowing from a tap after priming The Draining Floater
Attaching The Draining Floater to a fixing system (attached to a footbridge)
Draining Floater
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The Draining Floater installed for natural springs – Bejaia (Algeria)
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Introduction
The Buried Diffuser
The Draining Floater
Markets &
Partners
R&D next steps
Conclusion
www.chahtech.com
Our R&D team is preparing new innovative products (available in 2014) :Mini Buried Diffuser for landscapingCrops Buried Diffuser (corn, sunflower,
wheat, millet, sorghum…)Different sizes of The potted plant Buried
DiffuserComplete ready-for-use gravity irrigation
system for vegetables and landscapingSpecial pots with draining system….
R&D next steps
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Introduction
The Buried Diffuser
The Draining Floater
Markets &
Partners
R&D next steps
Conclusion
www.chahtech.com
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The Buried Diffuser and The Draining Floater may interest any person, group,
organization, company, country, etc. which is looking for: A better water management (efficiency, productivity, economy, saving…)
A friendly environment irrigation (long-sightedness and responsible water
consumption)
An ultimate technique to combat desertification
A sustainable agriculture (irrigated and rain fed) although the climate change and
the droughts
An intelligent and easy way to combat desertification, to combat hunger and famine,
poverty and food scarcity
…
Markets and partners (1/2)
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The market of The Buried Diffuser and The Draining Floater is huge and the potential users are worldwide:
Farmers Governmental structures (municipalities, ministries of
agricultures…) Landscaping companies Administrations HotelsNGOs …
Markets and partners (2/2)
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Our products are distributed in more than 15 countries: Middle-East: UAE, Saudi Arabia, Oman, Yemen…America: USAEurope: Belgium, Netherlands, Luxembourg, FranceAfrica: South Africa, Morocco, Mauritania, Kenya, Nigeria,
Zimbabwe, Zambia…
Soon: Pakistan, Portugal, Spain, Mexico, Brazil, …
Partners/Customers
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Introduction
The Buried Diffuser
The Draining Floater
Markets &
Partners
R&D next steps
Conclusion
www.chahtech.com
Highly innovative products to increase yields and decrease costs (water, energy, fertilizers, pesticides)
High quality products: The Buried Diffuser can be used for more than 30 years
Innovative with high commercial potentialVery simple installation and no maintenanceNot expensiveAllows Anticipated Irrigation Allows The injection and the conservation of water in the
deep soil layers
Conclusion
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Dr. Bellachheb CHAHBANICEO & FounderEmail: [email protected]: lachheb25Tel: +216 98 25 43 83
www.chahtech.com
