VIP Model Call Girls Chakan ( Pune ) Call ON 8005736733 Starting From 5K to 2...
ย
Saline Water management in land reclamation areas of southern Spain
1. Water and Soil
management in
salt-affected areas of
climate change
Water management in land reclamation
Areas of Southern Spain
Dr. FRANCISCO PEDRERO SALCEDO
Agriculture Engineer Irrigation Department
Spanish National Research Council (CSIC)
Applied Biology and Soil Sciences (CEBAS)
2. How to face this challenge for the agriculture of the future?
- Locate, diagnose and map the problem
- Monitoring continuously the salinity levels
- Establishment of measures in affected areas to
maintain salinity at acceptable levels.
- Recovery of degraded and viable soils from a
technical, environmental and economic point of view,
through sustainable irrigation water management
strategies (blending, secuential reuse,โฆ)
4. An estimated 100,000 irrigated hectares are irrigated with water from aquifers, of
which 85% have a very high level of salts
Salinity problem
5. Irrigation Management Strategies (at farm and distric level)
132 m
59 m
82 m
45 m
105 m
48 m
106 m
30 m
135 m
43 m
Aquifer depth
Optimal groundwater recharge
5
Km
Wastewater treatment plant
1
3
5
4
2
6. Use of reclaimed water and Regulated Deficit Irrigation (RDI) on mandarin
and grapefruit
2008-2020Evaluate the agricultural impact of using
reclaimed water for irrigation of citrus trees
under optimum and deficit irrigation conditions
and to assess the use of GIS tools for planning and
management of water reuse projects.
8. Ctr
J OJ F M A M J A NS D
RDI
100 % ETc
50 % ETc
Dual-Water
J OJ F M A M J A NS D
Regulated Saline
Irrigation โRSIโ
100 % ETc
ECw > 4ECw โ 1 ECw โ 1
ECw > 4 ECw > 4ECw โ 1
NEW treatments
Mixing irrigation Strategies
13. Establishment year
First irrigation
Surface of irrigable area (has.)
Community members
Yearly water supply(Hm3)
ResourcesfromtheTagus-Seguradiversion(Hm3)
ResourcesfromtheMojรณndesalinationplant.(Hm3)
Resourcesfromwastewatertreatmentplants(Hm3)
Resourcesfrom the Segura basin (Hm3)
1952
1979
41,294
9,896
141.9
122
4.2
2.2
11.68
General Data
15. Water Resources Mix
- RW - Tagus Transfer - S.Basin - Drought Wells - Market Transfer - Desalination
16. RW: F.
รlamo:
0,654 hm3
RW: Torre-
Pacheco:
1,825 hm3
RW: S. Javier:
2,894 hm3
RW: Balsicas-
Roldรกn: 1,0
hm3
RW: Los Alcรกzares:
2,611 hm3
RW: La Aljorra:
0,270 hm3
RW: San Pedro:
2,430 hm3
Max Total RW: 11,684 hm3
Reclaimed Water Use & Desalination
DS:
Escombreras
DS: Torrevieja
17. โ T h e M i x โ
โข High EC
Challenges
TS transfer: 900 uS/cm
Desalinated water: 220 uS/cm
RW*: 4,000- 8,000 uS/cm
โข Nutrients (nitrogen and phosphorous)
โข Lack of oxygen/ H2S: confined underground spaces
โข Portable gas detector
โข Moving elements out
โข Water reservoirs: excessive algae growth
Mix: < 1,200 uS/cm
โข Ultrasound irradiation-coagulation
โข Copper based compunds
โข Boron Mix: < 0,5 mg/L
18. Minor Sea Lagoon Issues
Phosphates: detergents, fertilizers, sewage
Sea water intrusion
Editor's Notes
De cara a la situaciรณn de escasez de agua y la competencia entre los distintos usuarios de este recurso se plantea el RDC como nueva estrategia que podrรญa mejorar la Eficiencia del uso del agua sin afectar a la producciรณn como acabamos de ver en los resultados presentados por mi compaรฑero,
Otra posible soluciรณn consta en buscar nuevos recursos como pueden ser las aguas regeneradas mediante procesos de depuraciรณn ya que en Murcia existen 90 depuradoras en servicio que estรกn regenerando alrededor del 17% de los recursos hรญdricos renovables.
CEBAS commitment to WP1-Task 3: Sustainable use of poor quality irrigation water.
Two new treatments have been added to our experimental design in Campotejar.
A) The Dual-Water treatment will be irrigated to restore 100% Etc using the following criteria
1 โ Fresh water from the Tajo-Segura canal (EC<= 1 dS m-1) will be used whenever the actual ETc is higher than 3 mm/day. Under our experimental conditions in Murcia, this period may extend from mid May till mid August
2- Treated saline water (EC>4 dS m-1) will be utilized during the remaing period. i.e. when the daily ETc is lower than 3 mm.
B) Regulated saline irrigation will be irrigated similar to the control treatment (100% ETc) with fresh water except during the second stage of fruit growth when Saline treated water will be used for irrigation. We are looking to subsitute the deficit stress by osmotic stress during the non critical fruit growth stage.
CEBAS commitment to WP1-Task 1: Task 1: Development and optimization of new precise irrigation techniques
A set to LVDT sensors were installed on several Mandarin trunks to follow the plant water status and a series of HydroProbe sensors were installed at 20 cm away from the emitter and 30 cm depth to follow the soil water content and transient salinity within the plant rooting system.