introduction of drip irrigation

2. COMPONENTS OF DRIP
IRRIGATION SYSTEM
presentation on :-
Subject: -
Micro irrigation system design
Presented by: - BARIA DIPAK ( PAGEN-091-2012 )
KAUSHAL .V. GADARIYA (PAGEN-097-2012)
CHETAN CHAUHAN (PAGEN-092-2012)

3. COMPONENTS OF A DRIP SYSTEM
 Filtration system
 Water Supply
 Regulators
 Backflow prevention
 Pressure regulator (flow
meter)
 Air and vacuum release
valve
 Chemical injection system
 Pressure gauge
 Check valve
 Interconnections
 Controller
 Sub main lines
 Mainline
 Lateral
 Emitters

4. Used to remove sand and
solid particles
Main features:
1. Efficient removal of solid
particles
2. Simple device
3. Has no moving parts
4. Minimum space
5. Low cost
HYDROCYCLONE FILTER

5. SCREEN FILTER
Screen filter: -
-The screens are usually cylindrical in
shape made of non-corrosive metal or plastic
material
Main features are: -
1. Simple and relatively low cost
2. Wide variety of filtration capacity
3. There is no depth of filtration – any
damage to screen cancels the filtration
action

6. GRAVEL FILTER
Sand or media filter: -
- 14” to 48” diameter
- Use swimming pool filter for
smaller systems
- Use pairs of canisters for larger
systems
- Back flush to clean
- Used for dirty water & considered
best for organic contamination.
- these filters are effective against
both organic and inorganic
suspended solid.

7. DISC FILTER
Disc filter: -
- Stack of grooved wafers
- Provides more filter area than screen of same size
- Cannot handle sand well

8. FERTIGATION EQUIPMENT
- The direct application of fertilizer
through drip irrigation has increased
the efficient use of fertilizer along with
saving in labour and money.
- Application of fertilizer into
pressurized irrigation system is done
by either a by-pass pressure tank, or
by venture pump or direct injection
system.

9. AIR AND VACUUM RELEASE VALVES
PRESSURE REGULATORS
- These valves prevent soil being sucked
back into the emitters on system shutdown
or when the drip tape laterals are drained.
- Pressure regulators are generally used to
decrease the higher system pressure to the
lower required system pressure.

10. CHECK VALVES OR NON-RETURN
VALVES
- These valves are used to prevent
unwanted flow reversal.
- They are used to prevent
damaging back flow from the
system to avoid return flow of
chemicals and fertilizers from the
system into the water source itself
to avoid contamination of water
source.

11. MAIN AND SUB-MAIN LINE & BLOCK
ZONE VALVE
-Generally Rigid PVC and High
density Polyethylene (HDPE) pipes are
used as main line & sub mainline.
-Sub main conveys water from main
line to individual laterals.
- These valves are open or
closed used to control the
flow through the main or
submain pipes.

12. DRIPPER
- Dripper discharge water from lateral on
the soil near the plants.
- They are made of plastic such as
polyethylene and polypropylene.
- Their discharge ranges between 1 to 10
lit/hr.
- Each dripper has its own
characteristics, advantages and
limitation, which determines its use.
- Types of dripper
1.Online dripper 2.Inline dripper

13. LATERALS
- The laterals/drip lines are normally
manufactured from LDPE (Low
Density Polyethylene).
- These pipes are generally laid above
the ground.
- Generally pipes having 10, 12,
16,20mm internal diameter

14. INTERCONNECTIONS
• Grommet and Takeoff: -
- These are used to connect the lateral to sub
main.
- Grommet act as a seal.

15. FLUSH VALVES AND PRESSURE
GAUGE
• Flush valves: -
It is provide at the end of each submain to flush out
the water and dirt accumulated at the end of the submain.
• Pressure gauge: -
It is used to indicate the operating pressure of drip
system

16. WATER SOURCE AND SELECTION OF
FILTERS
- Municipal Water System -Screen Filter or Disk Filter.
- Well -Screen Filter or Disk Filter.
- River or Creek -Media Filter and Screen Filter
- Pond or Lake -Media Filter and Screen Filter.
- Spring or Artesian Well -Screen Filter or Disk Filter.
- Organic material in water -Media Filter and Screen Filter
- Sand in water -Screen Filter or Disk Filter.