Raft type biological filter for purifying water quality in aquaculture

Abstract

The application discloses raft type aquaculture water quality purifying biological filter, relates to the technical field of water treatment, including biological filter body, the biological filter body is equipped with auxiliary mechanism, the auxiliary mechanism includes rectangular block, one of the rectangular groove is placed with activated carbon layer in the inside, the bottom of the rectangular block is provided with a gas collecting pipe, the inner wall bottom of one of the rectangular groove is additionally provided with two fan bodies, the gas outlet ends of two fan bodies are communicated with a second three-way pipe, the gas outlet end of the second three-way pipe is communicated with a gas distribution pipe, the top inlet of the box cover is additionally provided with a pressure relief valve, the application can absorb and dispose the sulfur compounds, nitrogen compounds, volatile organic compounds and microbial aerogel and other substances emitted or volatilized to the air in the aquaculture water purification process through the setting of auxiliary mechanism, and can also kill viruses in the microbial aerogel, so as to protect the environment and the health of the aquaculture person.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water treatment, in particular to a raft aquaculture water quality purification biological filter. BACKGROUND

[0002] Raft aquaculture is a mode of using floating raft as carrier to suspend aquaculture appliances for aquaculture in water area. In the process of raft aquaculture, metabolites, residual feed and the like of fish, shrimp, shellfish and other aquaculture organisms continuously enter the water, so that the raft aquaculture water contains a large amount of organic pollutants, ammonia nitrogen, microorganisms and other substances. However, in order to prevent water pollutants from affecting the survival and growth of aquaculture organisms, aquaculture personnel generally use biological filter to purify the water quality of raft aquaculture water to ensure the stability of the aquaculture environment.

[0003] The existing raft aquaculture water quality purification biological filter has the following disadvantages:

[0004] In the process of water quality purification of the existing open raft aquaculture water quality purification biological filter, sulfur-containing compounds, nitrogen-containing compounds, volatile organic compounds and microbial aerogel and other substances in the aquaculture water are volatilized or emitted into the air. At this time, the open biological filter cannot treat these substances, which will be emitted into the environment with the air, pollute the environment, be inhaled by the aquaculture person, and also affect the health of the aquaculture person.

[0005] Therefore, we propose a new raft aquaculture water quality purification biological filter to solve the problems raised in the above background. SUMMARY

[0006] The purpose of the present application is to provide a raft aquaculture water quality purification biological filter. By setting an auxiliary mechanism, sulfur-containing compounds, nitrogen-containing compounds, volatile organic compounds and microbial aerogel and other substances emitted or volatilized into the air during the aquaculture water purification process can be absorbed and treated, and viruses in the microbial aerogel can also be killed, thereby protecting the environment and the health of the aquaculture person, to solve the problems raised in the above background.

[0007] To achieve the above purpose, the present application provides the following technical scheme: a raft aquaculture water quality purification biological filter, comprising a biological filter body, wherein an auxiliary mechanism is arranged on the biological filter body.

[0008] The auxiliary mechanism includes a rectangular block, a plurality of support rods and a plurality of porous air suction pipes are fixed at the bottom of the rectangular block near the edge, three rectangular grooves are pre-set at the top of the rectangular block, an activated carbon layer is arranged in one of the rectangular grooves, a gas collecting pipe is arranged at the bottom of the rectangular block, a plurality of fixing seats are fixed on the gas collecting pipe, a first three-way pipe is communicated with the gas outlet end of the gas collecting pipe, two fan bodies are additionally arranged at the bottom of the inner wall of the middle one of the rectangular grooves, a second three-way pipe is communicated between the gas outlet ends of the two fan bodies, a gas distribution pipe is communicated with the gas outlet end of the second three-way pipe, two air guide pipes are fixedly arranged in the inner wall of the other one of the rectangular grooves, check valves are arranged at the gas outlet ends of the two air guide pipes, a box cover is additionally arranged at the top of the rectangular block, and a pressure relief valve is additionally arranged at the top inlet of the box cover.

[0009] Preferably, the plurality of porous air suction pipes and the plurality of support rods are arranged in opposite staggered arrangement, the plurality of fixing seats are additionally arranged at the bottom of the rectangular block, each gas inlet end of the gas collecting pipe is communicated with the gas outlet end of each porous air suction pipe, the gas outlet end of the gas collecting pipe is movably arranged through the bottom of the rectangular block, and the gas outlet end of the gas collecting pipe extends into the middle one of the rectangular grooves.

[0010] Preferably, the gas inlet ends of the two fan bodies are respectively communicated with the two gas outlet ends of the first three-way pipe, the gas outlet end of the second three-way pipe is fixedly arranged through the inner wall of the middle one of the rectangular grooves, the gas outlet end of the second three-way pipe extends into one of the rectangular grooves, and the gas distribution pipe is arranged in one of the rectangular grooves.

[0011] Preferably, the gas distribution pipe is arranged in the activated carbon layer, the gas inlet ends of the two air guide pipes are fixedly arranged through the inner wall of the middle one of the rectangular grooves, the gas inlet ends of the two air guide pipes are communicated with the interior of one of the rectangular grooves, and the gas outlet ports of the two check valves are close to the inner wall bottom of the other one of the rectangular grooves.

[0012] Preferably, the biological filter body includes two support blocks and a controller, a first treatment box is fixed between the tops of the two support blocks, the bottom ends of a plurality of support blocks are slidably embedded in the top of the first treatment box, a plurality of porous air suction pipes are arranged between the rectangular block and the first treatment box, a second treatment box is fixed at the bottom of the first treatment box, and the bottom of the second treatment box and the bottoms of the two support blocks are at the same horizontal plane.

[0013] Preferably, the bottom end liquid outlet end of the second treatment box is communicated with a first electric valve, both sides of the second treatment box are fixedly provided with placing plates, and the two placing plates are fixedly connected with two supporting blocks, the top of one of the placing plates is additionally provided with two centrifugal pumps and a blower, the liquid outlet end of the first electric valve is communicated with a connecting pipe, the liquid outlet end of the connecting pipe is movably penetrated through the surface of one of the supporting blocks, the liquid inlet end of one of the centrifugal pumps is communicated with the liquid outlet end of the connecting pipe, and the liquid inlet end of the other centrifugal pump is communicated with a water inlet pipe.

[0014] Preferably, the liquid outlet end of the other centrifugal pump is communicated with a water outlet pipe, the water outlet end of the water outlet pipe is communicated with the water inlet end of the top end of the second treatment box, a plurality of porous pipes are arranged on the outer wall of the second treatment box and close to the bottom, the gas outlet ends of the plurality of porous pipes are movably penetrated through the outer wall of the second treatment box and extend into the interior of the second treatment box, the gas inlet ends of the plurality of porous pipes are communicated with a plurality of one-way valves, and the gas inlet ends of the plurality of one-way valves are communicated with a multi-way pipe.

[0015] Preferably, the gas inlet end of the multi-way pipe is communicated with a gas outlet pipe, the outer wall of the second treatment box is fixedly provided with an auxiliary frame close to the bottom, the gas outlet pipe is arranged on the auxiliary frame, the gas outlet end of the blower is communicated with the gas inlet end of the gas outlet pipe, the gas inlet end of the blower is additionally provided with a filter piece, the two liquid outlet ends of the bottom end of the first treatment box are additionally provided with second electric valves, and the liquid outlet end of one of the second electric valves is communicated with a backflow pipe.

[0016] Preferably, the liquid outlet end of the backflow pipe is movably penetrated through the surface of one of the supporting blocks and the outer wall of the second treatment box in sequence, the liquid outlet end of the backflow pipe is communicated with the interior of the second treatment box, the liquid outlet end of one of the centrifugal pumps is communicated with a flow guide pipe, the input end of the flow guide pipe is fixedly penetrated through the top end of the inner wall of the first treatment box, the top end of the first treatment box is provided with a flow divider, and the liquid inlet end of the flow divider is communicated with the liquid outlet end of the flow guide pipe.

[0017] Preferably, each branch of the flow divider is fixedly sleeved with a stabilizing seat, a plurality of stabilizing seats are additionally arranged on the top end of the first treatment box, the interior of the first treatment box is provided with a filter layer, the flow guide pipe is embedded in the interior of the filter layer, a safety valve is additionally arranged on the surface of the second treatment box and close to the top end position and a gas outlet end, a plurality of auxiliary rings are additionally arranged on the surface of the rectangular block and close to the top end position, a plurality of hanging rings are additionally arranged on the upper side of the box cover, and the flow divider is arranged between the plurality of porous air suction pipes and the first treatment box.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1、The present application by setting auxiliary mechanism, can be purifying process in the breeding water or volatilize to the air of sulfur compounds, nitrogen compounds, volatile organic compounds and microbial aerogel and other substances absorption treatment, also can kill the virus in the microbial aerogel, thereby protect the environment, protect the health of the breeder, when the biological filter in the process of microbial biofilm and subsequent processing, at this time first use the cooperation of controller, fan body, first three way pipe, gas gathering pipe and porous air suction pipe, it can realize the breeding water volatilize or emit to the air in the second processing box inside the material air is drawn away.

[0020] 2、The present application subsequently again utilizes the cooperation of second three way pipe and gas distribution pipe, it can realize the air carrying substances transported to the activated carbon layer, that is, using activated carbon to adsorb the substances carried in the air, then use the cooperation of air guide pipe and check valve, it can realize the air after preliminary treatment is transported to another rectangular tank inside the disinfectant water, that is, using disinfectant water to kill the virus carried in the air, at the same time, using the cooperation of pressure relief valve, the excess gas in another rectangular tank can be discharged to the environment.

[0021] 3、The present application by setting biological filter body, can purify the raft breeding water, so as to ensure the survival and growth of cementum organism, when the biological membrane is formed on the filter material surface of the filter layer, at this time first use the cooperation of controller, another centrifugal pump, water inlet pipe and water outlet pipe, it can realize the breeding water transported by water supply pipe is transported to the second processing box, then use the cooperation of controller, air blower, filter, air outlet pipe, multiway pipe, a plurality of one-way valves and a plurality of porous pipes, it can realize the sufficient mixing of microbial inoculum and breeding water, and the microbial inoculum can obtain sufficient oxygen.

[0022] 4、The present application then uses the cooperation of controller, one of the centrifugal pumps, opened first electric valve, connecting pipe, flow guide pipe, flow divider, opened one of the second electric valves, return pipe and second processing box, it can realize the circulation of breeding water mixed with microbial inoculum in the second processing box, that is, the biological membrane is formed on the filter material surface of the filter layer, when the biological membrane on the filter material surface of the filter layer is complete, at this time, use the cooperation of controller, opened another second electric valve, two centrifugal pumps, filter layer and opened first electric valve, it can realize the filtration of raft breeding water by filter layer, and then discharge back to the raft breeding system. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the front view structure perspective drawing of the present application raft breeding water quality purifying biological filter;

[0024] Figure 2 It is the side view structure perspective drawing of the present application raft breeding water quality purifying biological filter;

[0025] Figure 3 Fig. 4 is a perspective view of the biological filter for water purification in raft culture from the top angle of the present application;

[0026] Figure 4 Fig. 5 is a perspective view of the biological filter for water purification in raft culture from another angle of the present application;

[0027] Figure 5 Fig. 6 is a perspective view of the biological filter for water purification in raft culture from the top angle of the auxiliary mechanism of the present application;

[0028] Figure 6 Fig. 7 is a perspective view of the biological filter for water purification in raft culture from the side angle of the auxiliary mechanism of the present application;

[0029] Figure 7 Fig. 8 is a perspective view of the biological filter for water purification in raft culture from the perspective view of the diverter of the present application;

[0030] Figure 8 Fig. 9 is a perspective view of the biological filter for water purification in raft culture from the bottom angle of the auxiliary mechanism of the present application;

[0031] Figure 9 Fig. 10 is a perspective view of the biological filter for water purification in raft culture from the perspective view of the auxiliary mechanism of the present application; Figure 6 Fig. 11 is an enlarged perspective view of the structure at A of the present application;

[0032] Figure 10 Fig. 12 is a perspective view of the porous pipe and the one-way valve of the biological filter for water purification in raft culture of the present application.

[0033] In the figure: 1, biological filter body; 101, support block; 102, first treatment box; 103, second treatment box; 104, first electric valve; 105, centrifugal pump; 106, connecting pipe; 107, water inlet pipe; 108, water outlet pipe; 109, porous pipe; 110, multi-way pipe; 111, air outlet pipe; 112, auxiliary frame; 113, air blower; 114, filter sheet; 115, second electric valve; 116, return pipe; 117, controller; 118, one-way valve; 119, flow guide pipe; 120, diverter; 121, stabilizing seat; 122, filter layer; 123, placement plate; 124, safety valve; 2, auxiliary mechanism; 201, rectangular block; 202, support rod; 203, porous air suction pipe; 204, rectangular groove; 205, activated carbon layer; 206, gas collecting pipe; 207, fixing seat; 208, first three-way pipe; 209, air blower body; 210, second three-way pipe; 211, gas distribution pipe; 212, air guide pipe; 213, check valve; 214, box cover; 215, pressure relief valve; 3, auxiliary ring; 4, hanging ring. DETAILED DESCRIPTION

[0034] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort shall fall within the protection scope of the present application.

[0035] Embodiment one: please refer to Figures 1-4 , Figure 6 , Figure 7 , Figure 9 and Figure 10As shown, the present application provides a technical solution: raft aquaculture water quality purification biological filter, including biological filter body 1, biological filter body 1 is equipped with auxiliary mechanism 2, biological filter body 1 includes two support blocks 101 and controller 117, the top of the two support blocks 101 is fixed with first processing box 102, the bottom end of the plurality of support blocks 101 is slidably embedded in the top of the first processing box 102, the bottom of the first processing box 102 is fixed with the second processing box 103, the bottom of the second processing box 103 and the bottom of the two support blocks 101 are at the same horizontal plane, the bottom end of the second processing box 103 is communicated with the first electric valve 104, the two sides of the second processing box 103 are fixed with the placing plate 123, the two placing plates 123 are respectively fixed with the two support blocks 101, the top of one of the placing plates 123 is additionally provided with two centrifugal pumps 105 and a blower 113, the liquid outlet end of the first electric valve 104 is communicated with the connecting pipe 106, the liquid outlet end of the connecting pipe 106 is movably penetrated through the surface of one of the support blocks 101, the liquid inlet end of one of the centrifugal pumps 105 is communicated with the liquid outlet end of the connecting pipe 106, the liquid inlet end of the other centrifugal pump 105 is communicated with the water inlet pipe 107, the liquid outlet end of the other centrifugal pump 105 is communicated with the water outlet pipe 108, the water outlet end of the water outlet pipe 108 is communicated with the water inlet end of the top of the second processing box 103, a plurality of porous pipes 109 are installed on the outer wall of the second processing box 103 close to the bottom position, the gas outlet ends of the plurality of porous pipes 109 are movably penetrated through the outer wall of the second processing box 103 and extend into the interior of the second processing box 103, the gas inlet ends of the plurality of porous pipes 109 are communicated with the one-way valve 118, the gas inlet ends of the plurality of one-way valves 118 are communicated with the multi-way pipe 110, the gas inlet end of the multi-way pipe 110 is communicated with the gas outlet pipe 111, the outer wall of the second processing box 103 close to the bottom position is fixed with the auxiliary frame 112, the gas outlet pipe 111 is placed on the auxiliary frame 112, the gas outlet end of the blower 113 is communicated with the gas inlet end of the gas outlet pipe 111, the gas inlet end of the blower 113 is additionally provided with the filter sheet 114, the two liquid outlet ends of the bottom of the first processing box 102 are additionally provided with the second electric valve 115, the liquid outlet end of one of the second electric valves 115 is communicated with the backflow pipe 116, the liquid outlet end of the backflow pipe 116 is movably penetrated through the surface of one of the support blocks 101 and the outer wall of the second processing box 103 in sequence, the liquid outlet end interior of the backflow pipe 116 is communicated with the interior of the second processing box 103, the liquid outlet end of one of the centrifugal pumps 105 is communicated with the flow guide pipe 119, the input end of the flow guide pipe 119 is fixedly penetrated through the inner wall top of the first processing box 102, the top of the first processing box 102 is provided with the flow divider 120, the liquid inlet end of the flow divider 120 is communicated with the liquid outlet end of the flow guide pipe 119, each branch of the flow divider 120 is fixedly sleeved with the stabilizing seat 121, a plurality of stabilizing seats 121 are additionally provided on the top of the first processing box 102, the interior of the first processing box 102 is provided with the filter layer 122, the flow guide pipe 119 is embedded in the interior of the filter layer 122,The surface of the second processing box 103 is equipped with a safety valve 124 near the top position of the air outlet end.

[0036] In this embodiment, when it is necessary to make the microorganisms adhere to the surface of the filter layer 122, the controller 117 is used to start the other centrifugal pump 105 first. At this time, the centrifugal pump 105 is started to cooperate with the water inlet pipe 107 to transport the breeding water transported by the water supply pipe into the inside of the water outlet pipe 108, and then into the inside of the second treatment tank 103. At this time, the breeding water entering the inside of the second treatment tank 103 is mixed with the microbial agent. When the appropriate amount of breeding water is injected into the inside of the second treatment tank 103, the controller 117 is used to suspend the other centrifugal pump 105, and then the air blower 113 is started. At this time, the air blower 113 is started to cooperate with the filter disc 114 to first filter the air in the environment and then suck it into the inside of the air outlet pipe 111, and then into the inside of the multi-way pipe 110, and then branch into the inside of each one-way valve 118, and then into the inside of the corresponding porous pipe 109, and then into the inside of the second treatment tank 103. When the gas is continuously injected into the inside of the second treatment tank 103, the microbial agent is fully mixed with the breeding water under the stirring of the gas, and the microbial agent obtains sufficient oxygen at the same time. When the microbial agent and the breeding water are fully mixed for a period of time, the air blower 113 is suspended by using the controller 117, and then the first electric valve 104, one of the second electric valves 115, and one of the centrifugal pumps 105 are opened. At this time, the centrifugal pump 105 is started to cooperate with the opened first electric valve 104 and the connecting pipe 106 to suck away the breeding water carrying the microbial agent, and then transport it into the inside of the flow guide pipe 119, and then into the inside of the flow divider 120, and then from the evenly scattered filter layer 122. The filtered breeding water then enters the inside of the return pipe 116 through the opened one of the second electric valves 115, and then returns to the inside of the second treatment tank 103 for new circulation. This reciprocating can make the microorganisms gradually adhere to the surface of the filter material of the filter layer 122 to form a biofilm. When the filter material surface of the filter layer 122 forms a biofilm, one of the second electric valves 115 is closed by using the controller 117, and then the other second electric valve 115 is opened. Before being opened, the water outlet end of the other second electric valve 115 is connected with a conveying pipe (to convey the preliminarily treated water back to the raft culture system). Then the breeding water in the second treatment tank 103 is pumped out again, filtered through the filter layer 122, and then conveyed back to the raft culture system from the cooperation of the other second electric valve 115 and the conveying pipe. When the breeding water in the second treatment tank 103 is completely pumped out and preliminarily treated, it is directly conveyed back to the raft culture system by using the controller 117 to close one of the centrifugal pumps 105 and the other second electric valve 115. As the biofilm on the filter material surface of the filter layer 122 matures, the degradation and conversion capacity of the microorganisms to the pollutants will continuously increase. At this time, the two centrifugal pumps 105 are started at the same time by using the controller 117, and the first electric valve 104 and the other second electric valve 115 are opened.At this time, the water delivered by the water supply pipe will first enter the interior of the second treatment tank 103, then enter the interior of the first treatment tank 102, then pass through the filter layer 122 for treatment, and then be discharged back into the raft culture system. At this time, the pollutants in the culture water discharged back into the raft culture system will be adsorbed by the filter material in the filter layer 122, and at the same time, the microorganisms will also decompose and metabolize the pollutants using the dissolved oxygen in the water, so that the water quality is purified.

[0037] Example Two: According to Figures 1-9As shown, the biological filter body 1 is provided with an auxiliary mechanism 2, the auxiliary mechanism 2 includes a rectangular block 201, a plurality of support rods 202 and a plurality of porous air suction pipes 203 are fixed at the bottom of the rectangular block 201 close to the edge, three rectangular grooves 204 are pre-set at the top of the rectangular block 201, an activated carbon layer 205 is placed in one of the rectangular grooves 204, a gas collecting pipe 206 is arranged at the bottom of the rectangular block 201, a plurality of fixing seats 207 are fixed on the gas collecting pipe 206, a first three-way pipe 208 is communicated with the gas outlet end of the gas collecting pipe 206, two fan bodies 209 are additionally arranged at the inner wall bottom of the middle one of the rectangular grooves 204, a second three-way pipe 210 is communicated between the gas outlet ends of the two fan bodies 209, a gas distribution pipe 211 is communicated with the gas outlet end of the second three-way pipe 210, two air guide pipes 212 are fixed and penetrated in the inner wall of the other rectangular groove 204, check valves 213 are arranged at the gas outlet ends of the two air guide pipes 212, a box cover 214 is additionally arranged at the top of the rectangular block 201, a pressure relief valve 215 is additionally arranged at the top inlet of the box cover 214, the plurality of porous air suction pipes 203 and the plurality of support rods 202 are arranged in opposite staggered arrangement, the plurality of fixing seats 207 are additionally arranged at the bottom of the rectangular block 201, each gas inlet end of the gas collecting pipe 206 is communicated with the gas outlet end of each porous air suction pipe 203, the gas outlet end of the gas collecting pipe 206 is movably penetrated through the bottom of the rectangular block 201 and extends into the middle one of the rectangular grooves 204, the gas inlet ends of the two fan bodies 209 are communicated with the two gas outlet ends of the first three-way pipe 208, the gas outlet end of the second three-way pipe 210 is fixedly penetrated through the inner wall of the middle one of the rectangular grooves 204 and extends into one of the rectangular grooves 204, the gas distribution pipe 211 is located in one of the rectangular grooves 204 and is embedded in the activated carbon layer 205, the gas inlet ends of the two air guide pipes 212 are fixedly penetrated through the inner wall of the middle one of the rectangular grooves 204 and are communicated with the interior of one of the rectangular grooves 204, the gas outlet ports of the two check valves 213 are close to the inner wall bottom of the other rectangular groove 204, the biological filter body 1 includes two support blocks 101 and a controller 117, the first treatment box 102 is fixed between the tops of the two support blocks 101, the plurality of porous air suction pipes 203 are located between the rectangular block 201 and the first treatment box 102, the flow divider 120 is arranged at the top of the first treatment box 102, a plurality of auxiliary rings 3 are additionally arranged on the surface of the rectangular block 201 close to the top, a plurality of hanging rings 4 are additionally arranged on the upper side of the box cover 214, and the flow divider 120 is located between the plurality of porous air suction pipes 203 and the first treatment box 102.

[0038] In this embodiment, during the microbial biofilm formation and subsequent treatment stage, the controller 117 will also start two fan bodies 209 at the same time, at this time the two fan bodies 209 started will cooperate through the first three-way pipe 208 and the gas collecting pipe 206, so that each air inlet of each porous air suction pipe 203 obtains suction, at this time during the microbial biofilm formation and aquaculture water treatment, the substances volatilized or emitted into the air in the raft aquaculture water (including sulfur compounds, nitrogen compounds, volatile organic compounds and microbial aerogel and other substances) will be sucked away, then transported into the inside of the second three-way pipe 210, then into the inside of the gas distribution pipe 211, and then uniformly distributed in the activated carbon layer 205, when the air carrying substances is distributed on the activated carbon layer 205, the activated carbon layer 205 will adsorb and treat the substances carried in the air at this time, then the air after preliminary treatment will enter the inside of the two air guide pipes 212, then into the inside of the corresponding check valve 213, and then transported into the disinfectant water in the other rectangular tank 204, when the treated air contacts the disinfectant water, the disinfectant water will kill the viruses carried in the air at this time, then the air after being treated again will emerge from the disinfectant water, when the inside of the other rectangular tank 204 is opened to continuously accumulate the treated air, the air pressure in the inside of the other rectangular tank 204 will increase at this time, when the air pressure exceeds the threshold set by the pressure relief valve 215, the excess air in the inside of the other rectangular tank 204 will be discharged from the air outlet of the pressure relief valve 215, that is, the treatment of the substances volatilized or emitted into the air in the aquaculture water is realized.

[0039] The effect and working principle of the whole mechanism are:

[0040] In the preparation stage, first use the crane and the cooperation of multiple auxiliary rings 3 to lift the entire auxiliary mechanism 2, then move the lifted auxiliary mechanism 2 directly above the biological filter tank body 1, then move the auxiliary mechanism 2 downward until the bottom ends of all the supporting rods 202 are slidably embedded on the first treatment box 102, then connect the water inlet pipe 107 with the water supply pipe conveying aquaculture water (water that needs to be purified, taken from the raft aquaculture system), then disconnect the water outlet pipe 108 from the water inlet end on the second treatment box 103, then inject an appropriate amount of microbial agent into the inside of the second treatment box 103 through the water inlet end on the second treatment box 103, finally reinstall the water outlet pipe 108, install the controller 117 in the appropriate position, connect the external power supply, turn on the controller 117 after completing the external power supply connection, set various parameters, remove the pressure relief valve 215, and inject an appropriate amount of disinfectant water (sodium hypochlorite solution) into the inside of the other rectangular tank 204 through the top inlet of the tank cover 214, then reinstall the pressure relief valve 215, and manually adjust the threshold values of the pressure relief valve 215 and the safety valve 124 (adjust according to the actual situation);

[0041] When the microorganisms need to be attached to the surface of the filter layer 122, the controller 117 is used to start another centrifugal pump 105. The centrifugal pump 105 is used to cooperate with the water inlet pipe 107 to transport the water from the water supply pipe to the inside of the water outlet pipe 108, and then to the inside of the second treatment tank 103. At this time, the water in the second treatment tank 103 is mixed with the microbial agent. When the second treatment tank 103 is filled with an appropriate amount of water, the controller 117 is used to suspend another centrifugal pump 105, and then the air blower 113 is started. The air blower 113 is used to cooperate with the filter 114 to filter the air in the environment and then suck it into the inside of the air outlet pipe 111, and then to the inside of the multi-way pipe 110, and then to the inside of each one-way valve 118, and then to the inside of the corresponding porous pipe 109, and then to the inside of the second treatment tank 103. When the second treatment tank 103 is continuously filled with gas, the microbial agent is fully mixed with the water under the action of the gas, and the microbial agent is provided with sufficient oxygen. When the microbial agent and the water are fully mixed for a period of time, the controller 117 is used to suspend the air blower 113, and then the first electric valve 104, one of the second electric valves 115 and one of the centrifugal pumps 105 are opened. The centrifugal pump 105 is used to cooperate with the opened first electric valve 104 and the connecting pipe 106 to pump the water carrying the microbial agent away, and then to the inside of the flow guide pipe 119, and then to the inside of the flow divider 120, and then to the evenly distributed filter layer 122. The filtered water then enters the return pipe 116 through the opened one of the second electric valves 115, and then returns to the inside of the second treatment tank 103 for new circulation. This reciprocating can make the microorganisms gradually attach to the surface of the filter layer 122 to form a biofilm. When the filter layer 122 forms a biofilm, the controller 117 is used to close one of the second electric valves 115, and then open another second electric valve 115. Before opening, the water outlet end of the other second electric valve 115 is connected to the delivery pipe (to deliver the water after preliminary treatment back to the raft culture system). The water in the second treatment tank 103 is then pumped out and filtered through the filter layer 122. The water is then delivered back to the raft culture system through the other second electric valve 115 and the delivery pipe. When the water in the second treatment tank 103 is completely pumped out and the preliminary treatment is completed, the water is directly returned to the raft culture system by closing one of the centrifugal pumps 105 and the other second electric valve 115 using the controller 117.

[0042] In the treatment stage, as the filter layer 122 on the surface of the filter layer 122 matures, the degradation and conversion capacity of microorganisms to pollutants will continue to increase, and at this time the reuse controller 117 will start two centrifugal pumps 105, open the first electric valve 104 and another second electric valve 115, at this time the water transported by the water supply pipe will first enter the inside of the second treatment tank 103, then enter the inside of the first treatment tank 102, then pass through the filter layer 122 for treatment, and then be discharged back to the raft culture system, at this time the pollutants in the culture water discharged back to the raft culture system will be adsorbed by the filter material in the filter layer 122, and at the same time the microorganisms will also decompose and metabolize the pollutants using the dissolved oxygen in the water, so that the water quality is purified, and at the same time, during the microbial membrane formation and subsequent treatment stage, the controller 117 will also start two fan bodies 209, at this time the two fan bodies 209 will be started through the first three-way pipe 208 and the gas collecting pipe 206 to cooperate, so that each air inlet of each porous air suction pipe 203 obtains suction, at this time the substances (sulfur compounds, nitrogen compounds, volatile organic compounds and microbial aerogel, etc.) volatilized or emitted into the air in the process of microbial membrane formation and culture water treatment will be sucked away, then transported into the inside of the second three-way pipe 210, then transported into the inside of the gas distribution pipe 211, and then uniformly distributed in the activated carbon layer 205, when the air carrying substances is distributed on the activated carbon layer 205, at this time the activated carbon layer 205 will adsorb and treat the substances carried in the air, then the air after preliminary treatment will enter the inside of the two air guide pipes 212, then enter the inside of the corresponding check valve 213, and then be transported into the disinfectant water in the other rectangular tank 204, when the treated air contacts the disinfectant water, at this time the disinfectant water will kill the viruses carried in the air, then the air after re-treatment will emerge from the disinfectant water, when the inside of the other rectangular tank 204 is opened to continuously accumulate the treated air, at this time the air pressure in the inside of the other rectangular tank 204 will increase, when the air pressure exceeds the threshold set by the pressure relief valve 215, at this time the excess air in the inside of the other rectangular tank 204 will be discharged from the air outlet of the pressure relief valve 215, that is, the treatment of the substances volatilized or emitted into the air in the culture water is realized.

[0043] Among them, a through hole is reserved on the inner wall of the middle rectangular tank 204.

[0044] Among them, the first electric valve 104, the centrifugal pump 105, the air blower 113, the second electric valve 115, the controller 117 (PLC controller), the one-way valve 118, the safety valve 124, the filter layer 122 (made of various filter materials), the activated carbon layer 205 (made of activated carbon particles), the fan body 209, the check valve 213 and the pressure relief valve 215 are all prior art, and their models can be selected according to actual conditions, which will not be explained here.

[0045] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A biofilter for purifying water quality in a raft culture, comprising a biofilter body (1), characterized in that: The biological filter body (1) is provided with an auxiliary mechanism (2); The auxiliary mechanism (2) comprises a rectangular block (201), a plurality of support rods (202) and a plurality of porous air suction pipes (203) are fixed at the bottom of the rectangular block (201) near the edge, three rectangular grooves (204) are pre-set at the top of the rectangular block (201), an activated carbon layer (205) is arranged in one of the rectangular grooves (204), a gas collecting pipe (206) is arranged at the bottom of the rectangular block (201), a plurality of fixing seats (207) are fixed on the gas collecting pipe (206), a first three-way pipe (208) is communicated with the gas outlet end of the gas collecting pipe (206), two fan bodies (209) are additionally arranged at the inner wall bottom of the middle one of the rectangular grooves (204), a second three-way pipe (210) is communicated between the gas outlet ends of the two fan bodies (209), a gas distribution pipe (211) is communicated with the gas outlet end of the second three-way pipe (210), two air guide pipes (212) are fixedly penetrated in the inner wall of the other rectangular groove (204), check valves (213) are arranged at the gas outlet ends of the two air guide pipes (212), a box cover (214) is additionally arranged at the top of the rectangular block (201), and a pressure relief valve (215) is additionally arranged at the top inlet of the box cover (214). The biological filter body (1) comprises two support blocks (101) and a controller (117), a first treatment box (102) is fixed between the tops of the two support blocks (101), the bottoms of a plurality of support blocks (101) are slidably embedded in the top of the first treatment box (102), a plurality of porous air suction pipes (203) are arranged between the rectangular block (201) and the first treatment box (102), and a second treatment box (103) is fixed at the bottom of the first treatment box (102). An appropriate amount of disinfectant water is injected into the other rectangular groove (204); The gas distribution pipe (211) is embedded in the activated carbon layer (205), the gas inlet ends of the two air guide pipes (212) are fixedly penetrated in the inner wall of the middle one of the rectangular grooves (204), the gas inlet ends of the two air guide pipes (212) are communicated with the interior of one of the rectangular grooves (204), and the gas outlet ports of the two check valves (213) are close to the inner wall bottom of the other rectangular groove (204).

2. The biofilter for purification of water quality in raft culture according to claim 1, characterized in that: A plurality of the porous air suction pipes (203) and a plurality of the support rods (202) are relatively staggered, a plurality of the fixing seats (207) are additionally arranged at the bottom of the rectangular block (201), each gas inlet end of the gas collecting pipe (206) is communicated with the gas outlet end of each porous air suction pipe (203), the gas outlet end of the gas collecting pipe (206) is movably penetrated in the bottom of the rectangular block (201), and the gas outlet end of the gas collecting pipe (206) extends into the interior of the middle one of the rectangular grooves (204).

3. The biofilter for purifying water quality in a raft culture according to claim 1, characterized by: The air inlet ends of the two fan bodies (209) are communicated with the two air outlet ends of the first three-way pipe (208) respectively, the air outlet end of the second three-way pipe (210) is fixedly penetrated through the inner wall of the middle one of the rectangular grooves (204), the air outlet end of the second three-way pipe (210) extends to the inside of one of the rectangular grooves (204), and the air distribution pipe (211) is located in the inside of one of the rectangular grooves (204).

4. The biofilter for purifying water quality in a raft culture according to claim 1, characterized by: The bottom end of the second treatment box (103) is communicated with the first electric valve (104), both sides of the second treatment box (103) are fixedly provided with the placing plates (123), the two placing plates (123) are fixedly connected with the two supporting blocks (101), the top of one of the placing plates (123) is additionally provided with the two centrifugal pumps (105) and the air blower (113), the liquid outlet end of the first electric valve (104) is communicated with the connecting pipe (106), the liquid outlet end of the connecting pipe (106) is movably penetrated through the surface of one of the supporting blocks (101), the liquid inlet end of one of the centrifugal pumps (105) is communicated with the liquid outlet end of the connecting pipe (106), and the liquid inlet end of the other centrifugal pump (105) is communicated with the water inlet pipe (107).

5. The biofilter for purification of water quality in raft culture according to claim 4, characterized in that: The liquid outlet end of the other centrifugal pump (105) is communicated with the water outlet pipe (108), the water outlet end of the water outlet pipe (108) is communicated with the top water inlet end of the second treatment box (103), a plurality of porous pipes (109) are arranged on the outer wall of the second treatment box (103) and close to the bottom, the air outlet ends of the plurality of porous pipes (109) are movably penetrated through the outer wall of the second treatment box (103) and extend into the inside of the second treatment box (103), the air inlet ends of the plurality of porous pipes (109) are communicated with the one-way valves (118), and the air inlet ends of the plurality of one-way valves (118) are communicated with the multi-way pipe (110).

6. The biofilter for purification of water quality in raft culture according to claim 5, characterized in that: The air inlet end of the multi-way pipe (110) is communicated with the air outlet pipe (111), the outer wall of the second treatment box (103) is fixedly provided with the auxiliary frame (112) and close to the bottom, the air outlet pipe (111) is placed on the auxiliary frame (112), the air outlet end of the air blower (113) is communicated with the air inlet end of the air outlet pipe (111), the air inlet end of the air blower (113) is additionally provided with the filter disc (114), the two liquid outlet ends of the first treatment box (102) are additionally provided with the second electric valves (115), and the liquid outlet end of one of the second electric valves (115) is communicated with the backflow pipe (116).

7. The biofilter for purification of water quality in raft culture according to claim 6, characterized in that: The liquid outlet end of the reflux pipe (116) successively penetrates the surface of one of the supporting blocks (101) and the outer wall of the second treatment box (103), the inside of the liquid outlet end of the reflux pipe (116) is communicated with the inside of the second treatment box (103), the liquid outlet end of one of the centrifugal pumps (105) is communicated with a flow guide pipe (119), the input end of the flow guide pipe (119) is fixedly penetrated through the top of the inner wall of the first treatment box (102), the top of the first treatment box (102) is provided with a flow divider (120), and the liquid inlet end of the flow divider (120) is communicated with the liquid outlet end of the flow guide pipe (119).

8. The biofilter for purification of water quality in raft culture according to claim 7, characterized in that: Each branch of the flow divider (120) is fixedly sleeved with a stabilizing seat (121), a plurality of stabilizing seats (121) are additionally arranged on the top of the first treatment box (102), the inside of the first treatment box (102) is provided with a filter layer (122), the flow guide pipe (119) is embedded in the inside of the filter layer (122), the surface of the second treatment box (103) is additionally provided with a safety valve (124) at the gas outlet end close to the top, the surface of the rectangular block (201) is additionally provided with a plurality of auxiliary rings (3) close to the top, the upper side of the box cover (214) is additionally provided with a plurality of hanging rings (4), and the flow divider (120) is between the plurality of porous air suction pipes (203) and the first treatment box (102).

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