Continuous in-situ therapeutic treatment system for fish in freshwater, from seawater

1 . An integrated system of continuous in-situ treatment for fish in fresh water obtained from salt water or sea water, to eliminate parasites from treated fish and thus avoid reinfection in fish, reducing the risk of the appearance of resistant parasites, and avoid contamination of the marine environment with organic compounds used in the treatment of fish, which incorporates a pond with continuous recording of physicochemical parameters of the water and treatment for fish, a fish transport mechanism, first separator device and a second separator device for water and fish, an oxygen generating device, at least one level sensor, at least one pump, at least one flow meter, comprising:

a) a system for moving the fish from one end to the opposite end of the fish treatment pond;

b) means of entry to the treatment system, for the entry of fish and sea water, respectively, where the sea water is separated into fresh water and a brine mixture, wherein the fresh water is used as a means for the therapeutic treatment of the fish;

c) a fish transport mechanism, for the transport of fish from the differentiated entrance for fish towards the treatment pond and through the different sections and stations present in the integrated treatment system;

d) a first separator device to separate and conduct the fish from the water from an input means to the treatment pond;

e) a first filter device for retaining parasites arranged between the fish separator device and a point of direct evacuation of the water to the sea, separated from the fish;

f) a first receiving pond for the parasites that have been retained by the first filter device ( 3 );

g) a counter and weight estimator for the fish transported between the fish inlet means and the treatment pond;

h) a first monitoring system to register and regulate the speed of operation of the device and movement of the fish within the treatment pond;

i) a water recirculation circuit of the treatment tank consisting of (i) at least one second filter device, (ii) a receiving tank for water filtered from the second filter device, (iii) at least one pump to drive the filtered water from the receiving tank, (iv) a gas removal system connected to the treatment tank and at least one pump to drive the flow of filtered water from the reception tank to an advanced oxidation system (AOP), for final treatment prior to return to the sea and (v) a second tank accumulation of organic matter and parasites which are separated by the second filter device from the recirculated treatment water;

j) a system for production and controlled injection of oxygen into the treatment tank, which comprises at least one sensor for measuring the concentration of oxygen in the water in the treatment tank and which also allows, injecting in at least one point of said pond the amount of oxygen necessary to the treatment water to support the oxygen demand of the fish being treated and maintain the oxygen level within an optimal range for the fish, throughout the recirculation circuit;

k) a second monitoring system and continuous recording of physical-chemical parameters of the water in the treatment pond comprising at least: a sensor for measuring dissolved oxygen in fresh water, at least a sensor for measuring CO2 dissolved in fresh water, at least a sensor for temperature measurement, at least a sensor for salinity measurement, at least a sensor for oxidation reduction potential (ORP) measurement and at least a sensor for pH measurement,

l) a reverse osmosis system to separate the water from the seawater, from its soluble components and other particles present, to obtain a flow of purified water (fresh water) and a flow of brine;

m) a seawater flow input device, which feeds the reverse osmosis system;

n) a first dosing device to automatically and controlled add the necessary components to the flow of fresh water comprising minerals and stabilizer compounds and/or pH regulators;

o) at least one flow meter to continuously measure the flow of fresh water produced, delivering the information to the dosing device;

p) a first accumulator tank of fresh water;

q) at least one variable flow pump or impeller pump to pump water from the freshwater accumulator tank to mix it with the water from the recirculation circuit passing through a degasser and entering with a stabilized water flow;

r) at least one level sensor located in the treatment tank connected to the freshwater booster pump to adjust the flow of replacement water to be added to the treatment tank, during the continuous therapeutic treatment;

s) a second flow meter, connected to a second metering device;

t) a second dosing device to automatically and controlled add at least one therapeutic and/or biologically active compound to the flow of fresh water entering the treatment tank;

u) a second fish separator device, to extract and separate the fish from the water of the treatment pond to a storage area for treated fish, separating them from the treatment water and returning the separated water from the fish to return to treatment pond;

v) an advanced oxidation system (AOP) of organic compounds present in the discharge water of the treatment pond, which includes at least one oxidation device for the generation of hydroxyl ions (OH—), which can be chosen from the list comprising: a UV ultraviolet light device, an electrochemical device, a photochemical device, an oxidizing chemical component and any combination of these, in order to mineralize organic contaminants into components harmless to the environment, such as CO2, water and inorganic ions;

w) a second tank for storing fresh water containing therapeutic agents and connecting the outgoing freshwater flow from the water recirculation circuit of the treatment tank, with the advanced oxidation system (PSA);

x) a retention and/or mixing tank, configured to accumulate and mix the fresh water coming out of the advanced oxidation device (AOP), recovered from the treatment circuit, with the brine obtained from the process reverse osmosis from seawater,

y) a restituted salty water flow outlet device, which returns the neutralized and innocuous reconstituted salty water mixture back to the sea.

2 . The system of claim 1 , wherein it is configured to be mounted on a naval craft, such as a ship, boat, raft, pontoon.

3 . The system of claim 2 , wherein the fish entry means is configured for the entry of fish from a fish container unit, where sick fish or healthy fish that require prophylactic treatment are found.

4 . The system of claim 3 , wherein the sick fish container unit can be chosen from the list comprising: an additional container unit of the naval artifact in which the treatment system is located, a fish container in a floating farm in the sea, a fishpond in a land-based farm that pumps seawater, and a fish holding unit in a second naval craft.

5 . The system of claim 1 , wherein the reverse osmosis system comprises a pre-filtering system for compounds from seawater, wherein said system comprises the removal of components from seawater in a range of size between 75 and 1 microns, where said removal of the components can be carried out in a single stage, and/or in multiple sequential stages.

6 . The system of claim 1 , wherein it further comprises a differentiated transport subsystem for the reverse osmosis products independently, including the transport of purified water from seawater, separated from the transport of brine and other components extracted from seawater.

7 . The system of claim 1 , wherein the fish water separation system is configured to separate the fish by certain classification parameters, including size, in order to ensure that only fish of a certain size enter to the treatment pond.

8 . The system of claim 1 , wherein at least the first and second filters correspond to mechanical filters, and where in addition at least the second mechanical filter device is fed by gravity from the treatment tank for fish.

9 . The system of claim 1 , wherein it further comprises a freshwater flow temperature control system connected to the recirculation circuit, configured to regulate the temperature of the therapeutic treatment system according to the specific parameters required.

10 . The system of claim 1 , wherein the gas removal system comprises a degassing device that allows air to circulate to the treatment system to remove gases, including carbon dioxide accumulated in the recirculation flow by effect of fish respiration in the treatment pond and return the filtered, disinfected and degassed water by gravity to the fish treatment pond.

11 . The system of claim 10 , wherein the temperature control system comprises at least one device to regulate the temperature of the water prior to the degassing system, configured to maintain the optimum temperature of the water in the fish treatment tank during the continuous treatment process.

12 . The system of claim 1 , wherein the AOP system is connected to the second water accumulation tank.

13 . The system of claim 12 , wherein it comprises a second ultraviolet light radiation device integrated in the recirculation system of the treatment tank located between the second filtration device and the storage tank, treatment, for the disinfection of the recirculation flow, as an additional element of active disinfection in the continuous in-situ therapeutic treatment system.

14 . The system of claim 1 , wherein it comprises a UV light system that emits radiation in the wavelength range of 180 nm to 280 nm.

15 . The system of claim 1 , wherein the flow of water received by the retention and/or mixing tank, corresponds to the flow of fresh water treated in the AOP system and coming from the system of continuous treatment, free of residues and parasites; and that, in combination with the brine flow, allows mixing both components and recovering a reconstituted salty water solution that is harmless to the environment, equivalent to seawater in its initial condition, to be returned to the source of origin.

16 . The system of claim 1 wherein the system for moving the fish from one end to the other inside the treatment pond, comprises at least one of the following: a propeller-pond system, a system of transfer screw, a system of screens or bulkheads, a system of steps, a system of trays, and any system that allows the orderly and sequential flow of fish transport inside a container, in which it is ensured that the first fish or group of fish that enters is the first fish or group of fish that leaves.

17 . The system of claim 16 , wherein it comprises a turbulence system to mix the flow of fresh water recovered from the treatment system and the brine produced by reverse osmosis.