Vannamei shrimp farms need a very efficient aeration system. The bubbles
of a diffused aeration system need to be very small. Especially for large farms
– more than 2 acres in size, the aeration required is quite intense. Farmers
usually provide aeration only on the periphery using paddle wheel aerators or
diffused aeration using blowers and aeration tube. But for large farms of 2
acres and more, aeration needs to be much more uniform and there cannot be any
dark areas where DO is low, so providing aeration only in the corners with a
paddle wheel aeration system or with a regular aeration is not sufficient.
Such issues are faced in cage farms also, where the distance of the
floating service area is very far from the actual cages and fish. Cage farming
in India is a relatively nascent industry. Due to the natural flow of water in
reservoir and ocean, most water parameters are balanced naturally. There is no
sludge or waste to worry about and most of the time the dissolved oxygen,
ammonia, pH etc are within the limits because natural flow of water and the eco
system ensures they are suitable for marine life.
However there are still times when the dissolved oxygen levels within
the cage go very low. And at such times a suitable aeration system is needed.
In cage farms submersible or paddle wheel aerators cannot be used. And diffused
aeration with aeration tubes and blower is not efficient since the depth of
cages is around 10 feet or 3 meters. Hence low pressure fine bubble diffusers
along with blowers are needed in such situations.
Identifying the aeration needs of
farmers, AirOxi is proud to offer the AirX tube. It is a special double walled
EPDM tube which has very fine bubbles. The special 2 perforated wall structure
ensures that that bubbles and pressure are proper throughout the length of the
tube.
Any standard aeration tube can be used upto a maximum of 3 meter length
because the pressure drop is quite high. But with the AirX tubes, the pressure
drop is so low that it can be easily installed upto 20 meter length and still
get uniform fine bubbles all along the length of the tube.
The material of construction EPDM is inert and this tube can be used in
salt water and fresh water as well as RAS (recirculating Aquaculture System).
The tubes have very fine bubble that release at very low pressure so
this product is ideal for grow out shrimp farms, RAS and transportation.
However the water movement provided is very low so they are not very suitable
for nurseries or biofloc.
Since the bubbles are very fine, the SOTR (Standard Oxygen Transfer
Rate) is quite high. This makes them the ideal diffuser to use with oxygen
cylinder and oxygen concentrators / generators.
The technical details for AirX tube are given below.
AirX tube technical details
Material – EPDM double
walled tube. Inert and safe to use with most liquids
Dimensions – Inside
diameter – 12 mm. Outside Diameter – 20 mm.
Compatible fittings - Fittings
of ½” / 16 mm
Standard roll length – 100 mtr
Usage - Compatible for wide range of
industrial, commercial, aquaculture in fresh, brackish or salt water, as well
as effluent and sewage applications
Air Flow – Optimum – 5
LPM / 0.3 m3/hr. Maximum – 15 LPM / 0.9 m3/h3
Holes – Micro holes all around
periphery and in both inner and outer tubes. Hole size is 0.2 mm
Usage length – Flexible
and can be made into any grid or shape. Maximum length with single injection of
air will depend on depth of installation and air pressure. Due to double wall
holes, long lengths are possible with minimum reduction in pressure along the
length unlike in single wall diffuser.
+91 – 9652122060
Email: marketing.airoxitube@gmail.com
www.buy.airoxi.com
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