The core of today's aquaculture industry is the water used to incubate eggs and raise fish larvae
The abundance and purity of water continues to decline, while concern about diseases found in water sources continues to increase.
Simultaneously, increased fish consumption has led to a growing demand for higher stocking densities in the same farming facilities.
Fish farms and breeding facilities are evaluating ways to improve the quality of their water at source, while compensating for quantity losses.
through the implementation of water recirculation systems (RAS).
This is leading more fish farms to install sophisticated water treatment systems to improve water quality and balance the needs of
water due to the lower availability of water in natural sources.
Most common applications
Desinfection
A fish breeding and fattening facility requires disinfection and filtration systems at various locations along the water line.
UV systems are installed after any other treatment technology used to improve water quality (e.g. filters, degassers, etc.),
just before the water comes into contact with fish eggs in a breeding or rearing facility.
They can also be used in the recirculation circuits (RAS) of breeding facilities and in the effluent circuit generated in the activity itself, although many studies
show that the treatment of RAS systems with Ozone increases productivity, since the health and survival of the fish is increased.
UV and Ozone systems significantly reduce pathogen counts in hatchery and breeding facilities and have proven to be the most cost-effective
disinfection technology for the inactivation of various types of bacteria, viruses and parasites harmful to many species of fish.
Line product:
There are three main reasons why ozone improves water quality and increases aquaculture productivity:
1. Removal of colloidal matter with ozone microflocculation
2. Removal of Dissolved Organic Compounds and decolorization
3. Transformation of lethal nitrite into harmless nitrate with ozone treatment
Since recirculating aquaculture systems (RAS) work by reusing water from fish tanks, monitoring water quality is essential. Many studies show that treating RAS systems with ozone
increases productivity by increasing fish health and survival.
[learn+]
[learn -]
Ozone Destruction
Ozonation is often used in a fish hatchery to improve the quality of problematic water sources used in the hatchery stages.
and fish farming.
However, residual ozone in water can be extremely toxic or fatal to aquatic life being cultured. To ensure that the fish
are not exposed to residual ozone, one of these two removal processes is usually used: the first is an ozone degasser (column
which expels ozone into the atmosphere); This method may not be the best design based on its toxic effect on the environment. The second method
It consists of applying 254 nm UV energy to consume residual ozone in the water flow before coming into contact with fish.
A certain dose of UV will need to be applied to consume residual ozone levels in the water. A common dimensioning for the complete
elimination of up to 1 ppm of residual ozone concentration would be a UV dose of 90 mJ/cm2. UV energy 254 nm breaks down the ozone molecule,
generating oxygen as a byproduct, which is a benefit for the fish.
Primary Filtration
Our compact and highly efficient rotating belt filter technology is installed in aquaculture plants around the world, offering customers:
- High TSS removal (40 - 90%, depending on design).
- High removal of organic particles (COD/BOD).
- Integrated sludge thickening and dewatering (2 - 30% dry sludge, depends on design and adjustment).
- Gentle filtration that does not crush particles.
- Flexible system configuration.
- Complete system automation with screen controls.
- Quick and easy maintenance.
- Low operating costs.
- High quality parts and long machine life (316 stainless steel).
- Quick access to spare parts and technical support and service.
Hatcheries and fish farms:
In hatcheries and fish farms, solids can appear in the water from fish waste and uneaten food. In large
quantities, these solids have a negative impact on the growth and survival rates of fish, as they demand oxygen and contaminate the water with
ammonia. A Salsnes filter system can effectively remove these solids (without crushing them like a typical drum filter) to maintain high filter quality.
water for fish.
[learn +]
[learn -]
Microsieve Filtration
Microscreen drum and disc filters offer the best solutions for Recirculating Aquaculture Systems (RAS) as well as Continuous Circulation Systems (FTS). These filters are designed for the removal of TSS, reduction of BOD, COD, phosphorus, parasites, algae and micropollutants.
The innovative filtration technology guarantees high filtration efficiency and low consumption of energy and backwash water. This translates into savings in operating costs of the filter as well as in the subsequent treatment of sludge. It also means a faster return on investment costs.
-The use of certified and high-quality materials guarantees a long and reliable service life
-Elimination of TSS, algae and parasites
-Options in stainless steel qualities: AISI304, AISI316L, AISI316Ti, duplex alloys
Drum Filter:
- Filter mesh available from 10 to 500 microns
- Filter capacity up to 300 l/s (1,080 m3/h)
- Installation variants: concrete channel and self-contained
- Possibility of integrating a UV unit in the smaller models
Disc Filter:
- Filter mesh available from 5 to 100 microns
- Filter capacity up to 1,300 l/s (4,680 m3/h)
- Large filtration surface in a small space
- Lower backwash water consumption = more water for recirculation
- Installation variants: concrete channel and self-contained
IN-EKO Aquaculture EN_v1_AQ