KR20040082723A - Apparatus and method for purifying water of farming and fish-farming ponds - Google Patents

Abstract

PURPOSE: To recover self purification capacity of fish farm by feeding microorganisms having high nutrient removal efficiency into fish farm while fine air bubbles being supplied into fish farm evenly at upper and lower part thereof, thereby improving water quality of fish farm. CONSTITUTION: The system comprises a fish farm(11); a complex sensor part(12) measuring the water quality of the fish farm and outputting the measured results; a control part(13) processing the water quality data and controlling the system wholly; a fine bubble generator(14) which generates fine air bubbles to supply it to the fish farm; a microorganism storage tank(15); a water current generator(16) equally diffusing the air bubbles and microorganisms from the fine bubble generator and microorganism storage tank to the lower part and the upper part of the fish farm; and a multilayer filter(17) discharging the contaminants of the fish farm to the outside.

Description

Apparatus and method for purifying water of farming and fish-farming ponds

The present invention relates to a water purification system for aquaculture and fish farms and a method thereof. More specifically, the present invention relates to an automatic water purification system and a water purification method using the same that can continuously improve the water quality of contaminated farming and fish farms without affecting the ecosystem.

The quality of aquaculture and fish farms is not maintained because water and fish manure is deposited and deposited at the bottom of the farm and fish farms and contaminants continue to accumulate through a closed cycle. Inevitably, it becomes eutrophic water quality.

Aquaculture and fish farms are nearly enclosed spaces, and the ecosystem is imbalanced by the influx of small amounts of organic and inorganic pollutants. Most aquaculture and fish farms have a characteristic of increasing pollution even if the source of contamination is blocked once contamination begins. Therefore, appropriate and economical water conservation or water quality improvement for each aquaculture and fish farm is an urgent task.

Usually, the factors that worsen water quality are the increase in the number of phytoplankton in algae, the amount of suspended matter in the water, the production of organic substances that release odors, the coloring of water by phytoplankton, the decrease in clarity, the rise in pH, the bottom dissolved oxygen When the concentration decreases, particularly when the dissolved oxygen approaches zero, the vicinity of the lower layer is reduced to generate methane gas, to elute phosphorus, and to elute various trace metals, thereby causing green algae and eutrophication.

In order to solve this problem, various methods such as introduction of purified water or physical, chemical, and biological countermeasures have been tried.

Here, physical measures include removal of deposits, aeration due to blowers or aberrations, and biological measures include the introduction of microbial agents. The conventional purification method described above has only a temporary effect on only a part of the upper water quality and is not a continuous and fundamental solution.

The present invention prevents the occurrence of eutrophication and green algae caused by pollutants and closed cycles caused by food and excretion that are continuously supplied to aquaculture and fish farms, and the imbalance of ecosystems caused by the inflow of small amounts of organic and inorganic pollutants. The technical problem is to solve the problem, and to this end, a large amount of fine oxygen is supplied evenly to the upper and lower layers together with a high concentration of microorganisms to restore the self-cleaning ability of aquaculture and fish farms, and to speed up the improvement of water quality. The objective is to provide a water purification system for aquaculture and fish farms and water purification methods using the same.

In addition, another object of the present invention is that when the organic matter such as food of fish farms and fish droppings are decomposed, the water quality is deteriorated due to the proliferation of odor components such as ammonia, hydrogen sulfide, melcaptone or various harmful bacteria In the case of NH ₃ is changed to NO ₂ by nitrite bacteria, NO ₂ is inorganicized to NO ₃ by nitrate bacteria. These microorganisms are the core of the plant chain (carbon cycle, nitrogen cycle) which is indispensable for the decomposition of organic matter in water. At this time, by supplying artificial oxygen supply and excellent microorganisms to balance the microorganisms necessary for the treatment of nutrient salts, water purification system that can restore the self-cleaning ability, speed up the improvement of the water quality, and create a good environment for fish and its To provide a method.

In addition, another object of the present invention is to reduce the cost of water purification due to the strengthening of the environmental law, and because it is possible to discharge-free system, it is not necessary to replenish the water accompanying the removal of sediment, and only to supplement the natural evaporation amount of electricity costs or winter The present invention provides a water purification system and a method for reducing heating costs.

1 is a block diagram of a water purification system according to the present invention.

2 is a flow chart of a water purification system according to the present invention.

<Description of the symbols for the main parts of the drawings>

11 ---- Fish farming and farming 12 --- Complex sensor

13 --- Control part 14 --- Microbubble generating part

15 --- Microbial Reservoir 16 --- Water Flow Generator

17 --- Multilayer Filter 18 --- Inlet Circulation Tubing

19 --- Pressurized pipe 20 --- Outflow circulation pipe

22 --- Recirculation piping 23 --- Filler reservoir

24 ---- outlet 25 ---- cake discharge

121 --- Temperature Sensor 122 --- Dissolved Oxygen Sensor

123 --- pH Sensor 124 --- Water Level and Turbidity Sensor

141 --- Motor 142 --- High Lift Pump

143 --- Manometer 144 --- Air Vent

145 --- Oxygen Dissolver 151,152 --- Metering Pump

The present invention is an automatic water purification system for use while circulating through a circulation pipe in aquaculture and fish farms, which is capable of aquaculture fish and aquaculture farms, a complex for measuring the water quality in the aquaculture and fish farms and sending out the measured results. Sensor unit, a control unit for processing the water quality data collected from the complex sensor unit and the overall control of the system, microbubble generating unit for generating fine oxygen bubbles to supply to the culture and fish farms, microorganisms into the culture and fish farms It consists of a microorganism storage tank, a water flow generator for evenly spreading the oxygen and microorganisms from the microbubble generating unit and the microbial reservoir in the lower and upper layers in the aquaculture and fish farm and a multi-layer filter to discharge contaminants in the culture and fish farm It is characterized by being.

In addition, the water purification method of aquaculture and fish farms of the present invention comprises the initial stage of purification to attract contaminated water; A fluidization step of passing the contaminated water through a pipe while pressurized at about 3 to 6 kg / m 2; Fine oxygen supplying step of entraining the air introduced by the pressure difference to the water in the form of a micro bubble to the lower layer of the culture and fish farm; Injecting microorganisms together into the fine oxygen; If necessary, supplying a biodegradable active agent that can enhance the activity of the microorganisms immediately after the micro-oxygen supply step and the microorganism input step; Purifying the water quality by allowing microbubbles in the form of micro bubbles supplied to the lower layers of the aquaculture and fish farms to be circulated throughout the inside by water flow generating means; And sediment precipitated in the lower layer of the culture and fish farm is characterized in that consisting of filtration and crushing to refine or discharge to the outside.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

According to the present invention, organic matter such as food and excreta are biodegraded in aquaculture and fish farms to balance the microorganisms, and a large amount of oxygen is supplied to the perishable water of the lower layer in the form of micro bubbles to oxidize the decayed bottom slurry to provide nitrogen to the atmosphere. Emissions to the middle, water flow generators are installed throughout the aquaculture and fish farms to provide sufficient oxygen evenly in the upper and lower layers to escape from closed waters, and high concentrations of microorganisms are distributed throughout the fishery to contaminate with existing midnight microorganisms. It is characterized by the removal of nutrients from substances and green algae.

1 of the accompanying drawings shows a block diagram of a water purification system according to the present invention, which system is aquaculture and fish farm 11, the composite sensor unit 12, the control unit 13, microbubble generating unit 14 , Microbial reservoir 15, water flow generator 16, and multi-layer filter 17.

As shown in FIG. 1, the surface of the aquaculture and fish farm 11 is provided with a complex sensor unit 12 for measuring the water quality and transmitting the measured result. The composite sensor unit 12 is a temperature sensor 121 for measuring the temperature of the contaminated water stored in the aquaculture and nursery 11, dissolved oxygen sensor for measuring the amount of dissolved oxygen (DO: Dissolved Oxygen) And 122, a pH sensor 123 for measuring pH, and a sensor 124 for measuring water level or turbidity, and the like, where necessary, the concentration of ammonia nitrogen or nitrate can be measured. Sensors can be installed.

The control unit 13 compares the water quality data transmitted from the complex sensor unit 12 with a reference value already set, and transmits a signal to the microbubble generating unit 14 and the microorganism storage tank 15 to control them. It is supposed to be. That is, when the transmitted water quality data falls below a reference value capable of maintaining optimal water quality for fish farming, the amount of generation of fine bubbles from the fine bubble generator 14 is increased by a control signal, and the metering pump ( 151, 152 to increase the amount of microorganisms released from the microbial reservoir 15. On the contrary, when the reference value is exceeded, the amount of micro bubbles generated from the micro bubble generator 14 is reduced, and the microbial input from the microorganism reservoir 15 is reduced by controlling or closing the metering pumps 151 and 152.

The control unit 13 may be arbitrarily set according to the type of fish farmed in the farm or fish farm.

The fine bubble generator 14 is composed of a motor 141, a high lift pump 142, a pressure gauge 143, an air vent 144, and an oxygen dissolution tank 145. The motor 14 serves to draw the contaminated water stored in the aquaculture and fish farm 11 to the bubble generator 14 through the inlet circulation pipe 18, the high lift pump 142 is a motor 141. It acts to send the water introduced by the operation of the pressure tube 19 at a high pressure of about 3 to 6 kg / ㎡. Here, reference numeral 143 connected to the pressure pipe 19 is a pressure gauge.

On the other hand, the oxygen dissolution tank 145 is in communication with the pressure tube 19, the upper portion of the air vent 144 to allow the air to flow in accordance with the pressure of the water passing through the dissolution tank. Therefore, the air flows from the air vent 144 by the pressure difference from the atmospheric pressure to the water passing through the pressure tube 19 at a high pressure to form micro bubbles.

In this process, the dissolved oxygen circulating water is discharged to the lower layer of the culture and fish farm 11 in the form of micro bubbles through the outflow circulation pipe 20 to oxidize the decaying bottom slurry to release nitrogen into the atmosphere.

As shown in FIG. 1, the outflow circulation pipe 20 is connected to the lower layer of the aquaculture and fish farm 11, and a water flow generator 16 is disposed in front of the outflow tip of the circulation pipe 20. The water flow generator 16 evenly diffuses and circulates the microbubble discharged through the circulation pipe 20 in the direction of the culture and fish farm 11 to the upper layer as well as the upper layer as shown in the arrow direction in FIG. This ensures the stabilization of the water quality, thereby allowing the dissolved oxygen to be maintained uniformly in the culture and fish farm 11. Preferably, at least one water flow generator 16 is installed throughout the bottom of the farm and fish farm 11.

On the other hand, since the microbial inlet pipe 153 for supplying microorganisms from the microorganism storage tank 15 is connected to the outlet circulation pipe 20 near the outlet of the oxygen dissolving tank 145, the microbubble is the outlet circulation pipe 20 When it is discharged into the culture and fish farm 11 through the high concentration of microorganisms are also introduced. When microorganisms are introduced into already contaminated fisheries, nutrients are mixed in the microorganisms, which may result in temporary clouding. If necessary, the microorganism may be supplied with a biodegradable activator which may enhance the activity of the microorganism.

The high concentration of microorganisms introduced in this way is spread throughout the fishery by the water flow generator, and removes pollutants and nutrients of green algae along with existing midnight microorganisms.

At the bottom of the aquaculture and fish farm 11, a discharge pipe 21 for discharging sediment particles, etc., from the contaminants such as excess food or excreta for fish to the outside is installed and discharged through the discharge pipe 21 The sediment material is finally treated in the multilayer filter 17 and then discharged to the outside through the discharge port 24 or part is sent back to the aquaculture and fish farm 11 via the recycle pipe 22, the cake discharge such as waste This is done by reference numeral 25. In FIG. 1, reference numeral 23 denotes a supplemental water reservoir for additionally supplementing naturally evaporated water in the water purification process.

The water purification method using the water purification system of aquaculture and fish farm according to the present invention operates the motor 141 of the microbubble generating unit 14, as shown in the flow chart of the water purification system of FIG. To draw the contaminated water in the culture and fish farm 11 through the inlet circulation pipe 18 (purification initial stage 30), and pressurized at a pressure of about 3 to 6 kg / m2 by the high lift pump 142. Pass the tube 19 (water fluidization step 31).

The air introduced by the pressure difference from the air vent 144 to the water diffused from the pressure tube 19 to the oxygen dissolution tank 145 having an expanded diameter is entrained in the form of micro bubbles, and these are supplied from the microorganism storage tank 15. Together with the microorganisms to be supplied to the lower portion of the culture and fish farm 11 through the outflow circulation pipe 20 (fine oxygen supply step 32 and microorganism input step 33). In this case, when the microorganisms are put into the contaminated fishery, nutrients may be mixed with the microorganisms to temporarily become more turbid.

If necessary, a biodegradable activator capable of enhancing the activity of the microorganism can be supplied immediately after the micro oxygen supply step 32 and the microorganism input step 33 (biodegradation activator supply step 34).

As described above, the microbubble in the form of micro bubbles supplied to the lower layer of the culture and fish farm 11 is circulated by the water generator 16 to maintain the dissolved oxygen uniformly while circulating the entire interior of the culture and fish farm 11. Purification and stabilization (water purification step 35). By artificially supplying oxygen and purifying microorganisms in this way, it is possible to balance the microorganisms necessary for the treatment of nutrient salts, to recover the self-cleaning ability, to speed up the improvement of water quality, and to create a good environment for fish. do.

Next, the precipitate precipitated in the lower layer of the culture and fish farm 11 is sent to the multi-layer filter 17 through the discharge pipe 21, where it is filtered and crushed, and then the culture and fish farm 11 through the recycle pipe 22 ) Back into the interior (filtration and grinding step 36). Unnecessary precipitates are finally discharged to the outside (purification completion step 37).

The present invention sends microorganisms to the micro oxygen of the water quality contaminated by the food and excreta of fish, and evenly distributes the dissolved oxygen content throughout the water by the water generator, and recovers the self-cleaning ability to accelerate the rate of improvement of water quality In addition, it is possible to meet the clean water quality and at the same time reduce the water purification cost according to the environmental law that is continuously strengthened, there is also an effect that can be discharged.

In addition, sediment extraction does not require additional water replenishment, and only replenishes the natural evaporation portion, which can reduce power and winter heating costs.

Moreover, there is an effect that can be expected to decompose fishmeal in aquaculture and farms, disease prevention, growth promotion, high-density production, meat quality improvement.

Claims (5)

In the automatic water purification system used while circulating through a circulation pipe in aquaculture and fish farms, aquaculture and fish farms that are capable of farming fish, a complex sensor unit for measuring the water quality of the aquaculture and fish farms and sending out the measured results, A control unit for processing the water quality data collected from the complex sensor unit and overall control of the system, a microbubble generating unit for generating fine oxygen bubbles to supply to the culture and fish farms, microorganisms for introducing microorganisms into the culture and fish farms And a water flow generator for evenly spreading the oxygen and microorganisms from the reservoir and the microbubble generation unit and the microorganism reservoir in the lower and upper layers in the aquaculture and fish farm, and a multilayer filter for discharging contaminants in the aquaculture and fish farm. Number of farms and fish farms Vaginal purification system. According to claim 1, wherein the microbubble generating unit is a high-lift pump that pressurizes the water drawn from the culture and fish farm by the operation of the motor, connected to the pump while passing the pressurized water at about 3 to 6 kg / ㎡ Pressurized tube, an air vent to supply air to the pressurized water by the difference between atmospheric pressure and the air vent is formed in the upper direction, and the oxygen in the air introduced therefrom is dissolved in the water to form and A water purification system for aquaculture and fish farms, characterized in that it consists of an oxygen dissolving tank that can be introduced into the lower part of the fish farm. The water purification system for aquaculture and fish farms according to claim 1 or 2, wherein the microbial reservoir is connected to a circulation pipe near an outlet of the oxygen dissolving tank via a microbial input tube. 2. The water purification system for aquaculture and fish farms according to claim 1, wherein at least one water generator is disposed at the bottom of the aquaculture and fish farm. Early stages of purification to draw contaminated water from aquaculture and fish farms; A fluidization step of passing the contaminated water through a pipe while pressurized at about 3 to 6 kg / m 2; Fine oxygen supplying step of supplying the air introduced by the pressure difference to the water to form a micro bubble to the lower layer of the culture and fish farm; Injecting microorganisms together into fine oxygen supplied to the culture and fish farms; If necessary, supplying a biodegradable active agent that can enhance the activity of the microorganisms immediately after the micro-oxygen supply step and the microorganism input step; Purifying the water quality by allowing microbubbles in the form of micro bubbles supplied to the lower layers of the aquaculture and fish farms to be circulated throughout the inside by water flow generating means; And The sediment precipitated in the lower layer of the culture and fish farm is filtered and pulverized and refining or discharged to the outside, characterized in that the water purification method of the culture and fish farm.