Device for treating aquaculture tail water by utilizing marine microalgae and treatment method thereof

Abstract

The invention provides a device for treating aquaculture tail water by utilizing marine microalgae and a treatment method thereof, and belongs to the technical field of aquaculture tail water. The device comprises a box body, a pretreatment mechanism and a purification mechanism, a pretreatment bin, a waste collection bin, a purification bin, a first precipitation bin, a second precipitation bin and a third precipitation bin are arranged in the box body, the pretreatment mechanism is installed in the pretreatment bin, and the pretreatment mechanism comprises a filter cartridge and a first rotating shaft; the filter cartridge is rotatably mounted in the pretreatment bin, and a gear ring is fixedly mounted on the surface of the filter cartridge. By arranging the pretreatment mechanism, tail water is introduced into the filter cartridge, suspended matters and organic matters in the tail water are filtered, the subsequent purification efficiency is improved, the filter cartridge is driven by the motor to rotate, impurities accumulated on the inner wall of the filter cartridge are fed into the waste collection bin through a spiral blade to be collected, use is convenient, water is fed into a branch pipe through a water pump, and the water treatment efficiency is improved. The surface of the filter cartridge is spray-washed by the nozzle, so that the filter cartridge is prevented from being blocked by impurities, and the filtering effect is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of aquaculture tail water, and in particular to a device for treating aquaculture tail water by using marine microalgae and a treatment method thereof. Background Art

[0002] Aquaculture tailwater usually contains a large amount of harmful substances, mainly from feed residues, animal excrement, drugs and chemicals in the aquaculture process. These harmful substances pollute the water quality, further affect the ecological environment, and even endanger the biodiversity of the surrounding water bodies. Therefore, aquaculture tailwater needs to be purified. Marine microalgae, as a highly efficient biological purification technology, can absorb pollutants in tailwater through photosynthesis and convert them into microalgae biomass, thereby achieving the purpose of purification.

[0003] Existing devices that use marine microalgae to treat aquaculture tailwater usually directly pass the tailwater into a microalgae pool for purification. The tailwater contains a lot of suspended matter and organic matter, which affects the photosynthesis of the microalgae and the wastewater treatment efficiency. In addition, microalgae require carbon dioxide during the photosynthesis process, but the carbon dioxide concentration in the water body is limited, which reduces the efficiency of microalgae photosynthesis. Summary of the invention

[0004] In order to make up for the above deficiencies, the present invention provides a device for treating aquaculture tail water using marine microalgae and a treatment method thereof, which overcomes the above technical problems or at least partially solves the above problems.

[0005] The present invention is achieved in that: The present invention provides a device for treating aquaculture tail water by using marine microalgae, comprising a box, a pretreatment mechanism and a purification mechanism, wherein the box is provided with a pretreatment bin, a waste collection bin, a purification bin, a first sedimentation bin, a second sedimentation bin and a third sedimentation bin, the pretreatment mechanism is installed in the pretreatment bin and is used for pretreatment of the tail water, and the pretreatment mechanism comprises: A filter cartridge, which is rotatably mounted in the pretreatment bin and is used to filter impurities in the tail water; A first rotating shaft, which is rotatably mounted in the inner cavity of the box body, and a spiral blade is fixedly mounted on the surface of the first rotating shaft, and the spiral blade contacts the inner wall of the filter cartridge and is used to send impurities in the filter cartridge into the waste collection bin; The purification mechanism is installed in the purification bin, and includes a planting box, a fill light, and a second rotating shaft. The planting box is installed in the purification bin and is used to plant microalgae. The fill light is symmetrically installed in the inner cavity of the box. The second rotating shaft is rotatably installed in the inner cavity of the box, and a stirring rod is symmetrically installed on the surface of the second rotating shaft.

[0006] In a preferred solution, a water inlet pipe is installed on the surface of the box body, one end of the water inlet pipe is inserted into the filter cartridge, the side wall of the waste collecting bin is connected to a waste discharge pipe, the side wall of the third sedimentation bin is connected to a water outlet pipe, a gear ring is fixedly installed on the surface of the filter cartridge, a motor is fixedly installed on the surface of the box body, a first gear is fixedly installed on the output end of the motor, and the first gear is meshed with the gear ring.

[0007] In a preferred solution, a third rotating shaft is fixedly mounted on the inner wall of the filter cartridge, a first pulley is fixedly mounted on one end of the third rotating shaft, a second pulley is fixedly mounted on one end of the first rotating shaft, a belt is connected between the first pulley and the second pulley, a branch pipe is fixedly mounted on the surface of the box body, and a plurality of nozzles are mounted on the surface of the branch pipe for spraying and cleaning the surface of the filter cartridge.

[0008] In a preferred solution, a water distribution pipe is installed at the bottom of the purification chamber, a water pump is installed in the pretreatment chamber, a water pipe is connected between the water outlet of the water pump and the water distribution pipe, a water pipe is connected between the branch pipe and the water outlet of the water pump, a third pulley is fixedly installed at one end of the second rotating shaft, and a belt is connected between the third pulley and the second pulley.

[0009] In a preferred solution, a first through groove is formed in the inner cavity of the second rotating shaft and the stirring rod, a first spray hole is formed on the surface of the stirring rod, a rotary joint is rotatably mounted on one end of the second rotating shaft, and the rotary joint is in communication with the first through groove.

[0010] In a preferred embodiment, a control box is installed on the side wall of the box body, an L-shaped groove is opened in the control box, a gas tank is installed on the side wall of the box body, the gas tank is filled with carbon dioxide, an air pipe is connected between one end of the L-shaped groove and the rotary joint, and an air pipe is connected between the other end of the L-shaped groove and the gas tank.

[0011] In a preferred embodiment, a valve ball is rotatably installed in the control box, a fourth rotating shaft is fixedly installed on the side wall of the valve ball, a second gear is fixedly installed on one end of the fourth rotating shaft, a mounting ring is fixedly installed in the inner cavity of the box body, a push rod is slidably installed in the inner cavity of the mounting ring, an abutment block is fixedly installed on one end of the push rod, a first spring is sleeved on the surface of the push rod, one end of the first spring is fixedly connected to the mounting ring, and the other end of the first spring is fixedly connected to the abutment block, which is used to drive the abutment block to move in the direction of the second rotating shaft, a protrusion is fixedly installed on the surface of the second rotating shaft, the protrusion contacts with the surface of the abutment block, which is used to drive the push rod to move, and a tooth plate is fixedly installed on the other end of the push rod, and the tooth plate meshes with the second gear.

[0012] In a preferred solution, a flocculation mechanism is installed in the first sedimentation bin, and the flocculation mechanism includes a fifth rotating shaft, blades and a water receiving plate. The fifth rotating shaft is rotatably installed in the inner cavity of the box body, and blades are symmetrically fixedly installed on the surface of the fifth rotating shaft. An overflow trough is provided between the purification bin and the first sedimentation bin, and a water receiving plate is rotatably installed on the inner wall of the first sedimentation bin.

[0013] In a preferred scheme, a liquid pumping cylinder is rotatably installed on the side wall of the first sedimentation bin, a piston is slidably installed in the inner cavity of the liquid pumping cylinder, a connecting rod is fixedly installed on the surface of the piston, one end of the connecting rod is rotatably connected to the water receiving plate, a second spring is fixedly installed in the liquid pumping cylinder, one end of the second spring is fixedly connected to the piston for driving the piston to move upward, a one-way valve is symmetrically installed on the side wall of the liquid pumping cylinder, a solvent box is fixedly installed on the side wall of the box body, a water pipe is connected between one of the one-way valves and the solvent box, a block is fixedly installed at one end of the water receiving plate, a second through groove is opened in the inner cavity of the block, a plurality of second spray holes are opened on the surface of the second through groove, a water pipe is connected between the other one of the one-way valves and the second through groove, a first filter hole is opened between the first sedimentation bin and the second sedimentation bin, and a second filter hole is opened between the second sedimentation bin and the third sedimentation bin.

[0014] A method for treating aquaculture tail water using marine microalgae, applicable to the above-mentioned device for treating aquaculture tail water using marine microalgae, comprises the following steps: S1: Pretreatment: The tail water is passed into the filter cartridge through the water inlet pipe to filter the suspended solids and organic matter in the tail water to improve the subsequent purification efficiency. The motor drives the filter cartridge to rotate, driving the spiral blade to rotate, and the impurities accumulated on the inner wall of the filter cartridge are sent to the waste collection bin for collection. The nozzle sprays and washes the surface of the filter cartridge to prevent impurities from clogging the filter cartridge; S2: Purification; the pre-treated water is sent into the purification chamber by a water pump, and the water in the purification chamber is disturbed by the rotation of the second rotating shaft and the stirring rod to improve the fluidity of the water. The convex block rotates synchronously, driving the abutment block to drive the push rod to move back and forth, so that the L-shaped groove is intermittently connected, and the carbon dioxide in the gas tank is sent into the first through groove through the rotary joint, and sprayed into the water from the first spray hole, which increases the fluidity of the water on the one hand, and increases the concentration of carbon dioxide in the water on the other hand, promoting the photosynthesis of microalgae; S3: Sedimentation; after the tail water is purified by the microalgae in the planting box, it flows out to the first sedimentation bin through the overflow trough and impacts the blades, driving the blades to rotate, and the water flow is intermittently discharged to the water receiving plate, impacting the water receiving plate, driving the connecting rod and the piston to move downward, injecting the flocculant in the pumping cylinder into the second through groove, and spraying it out from the second spray hole, mixing it into the tail water, and further flocculating and precipitating the impurities in the tail water.

[0015] The present invention provides a device and method for treating aquaculture tail water using marine microalgae, and its beneficial effects include: 1. By setting up a pretreatment mechanism, the tail water can be passed into the filter cartridge through the water inlet pipe to filter the suspended solids and organic matter in the tail water, thereby improving the subsequent purification efficiency. The filter cartridge is driven to rotate by a motor, and the impurities accumulated on the inner wall of the filter cartridge are sent to the waste collection bin for collection through the spiral blades, which is convenient for use. Water is sent into the branch pipe through a water pump, and the surface of the filter cartridge is sprayed and washed by a nozzle to avoid impurities clogging the filter cartridge and ensure the filtering effect.

[0016] 2. By setting up a purification mechanism, the pretreated water can be sent to the purification chamber through a water pump, and the water in the purification chamber is disturbed by driving the second rotating shaft and the stirring rod to rotate, thereby improving the fluidity of the water, ensuring the contact between the water flow and the microalgae, and improving the purification effect. The convex blocks rotate synchronously, thereby driving the abutment block to drive the push rod to move back and forth, and driving the second gear to drive the valve ball to rotate back and forth through the tooth plate, so that the L-shaped groove is intermittently conductive, and the carbon dioxide in the gas tank is sent into the first through groove through the rotary joint, and sprayed into the water from the first spray hole. On the one hand, the fluidity of the water is increased, and on the other hand, the carbon dioxide concentration in the water can be increased, which can promote the photosynthesis of microalgae, thereby improving the removal efficiency of pollutants such as nitrogen and phosphorus in the wastewater.

[0017] 3. By setting up a flocculation mechanism, after the tail water is purified by the microalgae in the planting box, it flows out to the first sedimentation bin through the overflow trough and impacts the blades, thereby driving the blades to rotate, and the water flow is intermittently discharged to the water receiving plate, impacting the water receiving plate, driving the connecting rod and the piston to move downward, and injecting the flocculant in the pumping cylinder into the second through groove, and sprayed out from the second spray hole, mixed into the tail water, further flocculating and precipitating the impurities in the tail water, and improving the tail water purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those skilled in the art, other relevant drawings can be obtained based on these drawings without creative work. Figure 1 is a front perspective view provided by an embodiment of the present invention; Figure 2 A rear perspective view provided for an embodiment of the present invention; Figure 3 A top view of an embodiment of the present invention; Figure 4 A side cross-sectional view of an embodiment of the present invention is provided; Figure 5 A cross-sectional view of a box provided for an embodiment of the present invention; Figure 6 The embodiments of the present invention provide Figure 5 Enlarged view of point A in the middle; Figure 7 A side perspective view of a box provided in an embodiment of the present invention; Figure 8 The embodiments of the present invention provide Figure 7 Enlarged view of point B in the middle; Fig. 9 The embodiments of the present invention provide Figure 7 Enlarged view of point C in the middle; Fig.10 A three-dimensional diagram of a purification chamber provided in an embodiment of the present invention; Fig.11 The embodiments of the present invention provide Fig.10 Enlarged view of point D in the middle.

[0019] In the figure: 1, box body; 2, pretreatment chamber; 3, waste collection chamber; 4, purification chamber; 5, first sedimentation chamber; 6, second sedimentation chamber; 7, third sedimentation chamber; 8, water inlet pipe; 9, waste discharge pipe; 10, water outlet pipe; 11, pretreatment mechanism; 1101, filter cartridge; 1102, third rotating shaft; 1103, gear ring; 1104, motor; 1105, first gear; 1106, first rotating shaft; 1107, spiral blade; 1108, first pulley; 1109, second pulley; 1110, branch pipe; 1111, nozzle; 12, purification mechanism; 1201, water distribution pipe; 1202, water pump; 1203, planting box; 1204, fill light; 1205, second rotating shaft; 1206, stirring rod; 1207, third pulley; 1208, first through groove; 1209, first spray hole; 1210, rotary joint; 1211, control box; 1212, L-shaped groove; 1213, gas tank; 1214, valve ball; 1215, fourth shaft; 1216, second gear; 1217, mounting ring; 1218, push rod; 1219, abutment block; 1220, first spring; 1221, protrusion; 1222, tooth plate; 13, flocculation mechanism; 1301, fifth shaft; 1302, blade; 1303, overflow groove; 1304, water receiving plate; 1305, liquid pumping cylinder; 1306, piston; 1307, connecting rod; 1308, second spring; 1309, one-way valve; 1310, solvent box; 1311, stopper; 1312, second through groove; 1313, second spray hole; 1314, first filter hole; 1315, second filter hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Reference Figure 1-Figure 11 As shown, the present invention provides a technical solution: a device for treating aquaculture tail water using marine microalgae, comprising a box body 1, a pretreatment mechanism 11 and a purification mechanism 12, wherein the box body 1 is provided with a pretreatment bin 2, a waste collection bin 3, a purification bin 4, a first sedimentation bin 5, a second sedimentation bin 6 and a third sedimentation bin 7, a water inlet pipe 8 is installed on the surface of the box body 1 for introducing tail water, one end of the water inlet pipe 8 is inserted into a filter cartridge 1101, a side wall of the waste collection bin 3 is connected with a waste discharge pipe 9 for discharging impurities in the waste collection bin 3, and a side wall of the third sedimentation bin 7 is connected with a water outlet pipe 10 for draining water.

[0022] Reference Figure 1-Figure 5 As shown, in a preferred embodiment, the pretreatment mechanism 11 is installed in the pretreatment bin 2, and is used to pretreat the tail water and remove suspended matter and organic matter in the tail water. The pretreatment mechanism 11 includes a filter cartridge 1101 and a first rotating shaft 1106. The filter cartridge 1101 is rotatably installed in the pretreatment bin 2, and is used to filter impurities in the tail water. A ring gear 1103 is fixedly installed on the surface of the filter cartridge 1101, and a motor 1104 is fixedly installed on the surface of the box body 1. A first gear 1105 is fixedly installed on the output end of the motor 1104, and the first gear 1105 is meshed with the ring gear 1103. The tail water can be passed into the filter cartridge 1101 through the water inlet pipe 8 to filter the suspended matter and organic matter in the tail water, and the first gear 1105 can be driven to rotate by the motor 1104, driving the ring gear 1103 and the filter cartridge 1101 to rotate, so as to prevent impurities from clogging the filter cartridge 1101.

[0023] Reference Figure 1-Figure 5As shown, in a preferred embodiment, the first rotating shaft 1106 is rotatably mounted in the inner cavity of the housing 1, and a spiral blade 1107 is fixedly mounted on the surface of the first rotating shaft 1106. The spiral blade 1107 contacts the inner wall of the filter cartridge 1101 and is used to send impurities in the filter cartridge 1101 into the waste collection bin 3. The inner wall of the filter cartridge 1101 is fixedly mounted with a third rotating shaft 1102, and a first pulley 1108 is fixedly mounted at one end of the third rotating shaft 1102. A second pulley 1109 is fixedly mounted at one end of the first rotating shaft 1106, and the first pulley 1108 is fixedly mounted at one end of the first rotating shaft 1106. A belt is connected between the second pulley 1109. When the motor 1104 drives the filter cartridge 1101 to rotate, the second pulley 1109 can be driven to rotate through the first pulley 1108, thereby driving the spiral blade 1107 to rotate, and the impurities accumulated on the inner wall of the filter cartridge 1101 are sent to the waste collecting bin 3 for collection, which is convenient for use. A branch pipe 1110 is fixedly installed on the surface of the box body 1, and a plurality of nozzles 1111 are installed on the surface of the branch pipe 1110, which are used to spray and wash the surface of the filter cartridge 1101 to prevent impurities from clogging the filter cartridge 1101 and ensure the filtering effect.

[0024] In a preferred embodiment, when in use, tail water can be passed into the filter cartridge 1101 through the water inlet pipe 8, and suspended solids and organic matter in the tail water can be filtered to improve the subsequent purification efficiency, and the first gear 1105 can be driven to rotate by the motor 1104, driving the ring gear 1103 and the filter cartridge 1101 to rotate, and the second pulley 1109 is driven to rotate by the first pulley 1108, thereby driving the spiral blade 1107 to rotate, and the impurities accumulated on the inner wall of the filter cartridge 1101 are sent to the waste collection bin 3 for collection, which is convenient for use, and water is sent into the branch pipe 1110 through the water pump 1202, and the surface of the filter cartridge 1101 is sprayed by the nozzle 1111 to prevent impurities from clogging the filter cartridge 1101 and ensure the filtering effect.

[0025] Reference Figure 1-Figure 11As shown, in a preferred embodiment, the purification mechanism 12 is installed in the purification chamber 4, and the marine microalgae are used to absorb nutrients, nitrogen, phosphorus, etc. in the water through photosynthesis, and converted into the biomass of microalgae, thereby reducing the concentration of harmful substances in the tail water. The purification mechanism 12 includes a planting box 1203, a fill light 1204 and a second rotating shaft 1205. A water distribution pipe 1201 is installed at the bottom of the purification chamber 4, and a water pump 1202 is installed in the pretreatment chamber 2. A water pipe is connected between the water outlet end of the water pump 1202 and the water distribution pipe 1201, and a water pipe is connected between the branch pipe 1110 and the water outlet end of the water pump 1202. The pretreated water can be sent to the purification chamber 4 through the water pump 1202. The planting box 1203 is installed in the purification chamber 4 for For growing microalgae, fill-in lamps 1204 are symmetrically installed in the inner cavity of the box 1 for supplementing illumination and maintaining photosynthesis of the microalgae. A second rotating shaft 1205 is rotatably installed in the inner cavity of the box 1, and a stirring rod 1206 is symmetrically installed on the surface of the second rotating shaft 1205. A third pulley 1207 is fixedly installed at one end of the second rotating shaft 1205, and a belt is connected between the third pulley 1207 and the second pulley 1109. When the motor 1104 drives the filter cartridge 1101 to rotate, the third pulley 1207 can be driven to rotate through the second pulley 1109, thereby driving the second rotating shaft 1205 and the stirring rod 1206 to rotate, thereby disturbing the water in the purification chamber 4, improving the fluidity of the water, ensuring the contact between the water flow and the microalgae, and improving the purification effect.

[0026] Reference Figure 1-Figure 11 As shown, in a preferred embodiment, a first through groove 1208 is provided in the inner cavity of the second rotating shaft 1205 and the stirring rod 1206, a first spray hole 1209 is provided on the surface of the stirring rod 1206, a rotary joint 1210 is rotatably installed at one end of the second rotating shaft 1205, the rotary joint 1210 is communicated with the first through groove 1208, a control box 1211 is installed on the side wall of the box body 1, an L-shaped groove 1212 is provided in the control box 1211, a gas tank 1213 is installed on the side wall of the box body 1, the gas tank 1213 is filled with carbon dioxide, an air pipe is connected between one end of the L-shaped groove 1212 and the rotary joint 1210, and an air pipe is connected between the other end of the L-shaped groove 1212 and the gas tank 1213.

[0027] Reference Figure 1-Figure 11As shown, in a preferred embodiment, a valve ball 1214 is rotatably installed in the control box 1211, and an L-shaped channel is opened inside the valve ball 1214 for controlling the on and off of the L-shaped groove 1212. A fourth rotating shaft 1215 is fixedly installed on the side wall of the valve ball 1214, and a second gear 1216 is fixedly installed on one end of the fourth rotating shaft 1215. A mounting ring 1217 is fixedly installed in the inner cavity of the box body 1, and a push rod 1218 is slidably installed in the inner cavity of the mounting ring 1217. An abutment block 1219 is fixedly installed at one end of the push rod 1218. A first spring 1220 is sleeved on the surface of the push rod 1218, and one end of the first spring 1220 is fixedly connected to the mounting ring 1217, and the other end of the first spring 1220 is fixedly connected to the abutment block 1219, which is used to drive the abutment block 1219 to move in the direction of the second rotating shaft 1205. A protrusion 1221 is fixedly installed on the surface of the second rotating shaft 1205, and the protrusion 1221 is slidably connected to the abutment block 1219. 19 surface contact is used to drive the push rod 1218 to move. A tooth plate 1222 is fixedly installed on the other end of the push rod 1218. The tooth plate 1222 meshes with the second gear 1216. Under the action of the first spring 1220, the abutment block 1219 is driven to be close to the side wall of the protrusion 1221. When the second rotating shaft 1205 rotates, the protrusion 1221 is driven to rotate synchronously, thereby driving the abutment block 1219 to drive the push rod 1218 to move back and forth, and driving the second gear 1216 to drive the valve ball 1214 to rotate back and forth through the tooth plate 1222, so that the L-shaped groove 1212 is intermittently connected, and the carbon dioxide in the gas tank 1213 is sent into the first through groove 1208 through the rotary joint 1210, and is sprayed into the water from the first spray hole 1209. On the one hand, it increases the fluidity of water, and on the other hand, it can also increase the concentration of carbon dioxide in water, promote the photosynthesis of microalgae, and thereby improve the removal efficiency of pollutants such as nitrogen and phosphorus in wastewater.

[0028] In a preferred embodiment, when in use, the pre-treated water can be sent into the purification chamber 4 through the water pump 1202, and when the motor 1104 drives the filter cartridge 1101 to rotate, the third pulley 1207 can be driven to rotate through the second pulley 1109, thereby driving the second rotating shaft 1205 and the stirring rod 1206 to rotate, disturbing the water in the purification chamber 4, improving the fluidity of the water, ensuring the contact between the water flow and the microalgae, and improving the purification effect. When the second rotating shaft 1205 rotates, it drives the protrusion 1221 to rotate synchronously, so as to The driving abutment block 1219 drives the push rod 1218 to move back and forth, and drives the second gear 1216 through the tooth plate 1222 to drive the valve ball 1214 to rotate back and forth, so that the L-shaped groove 1212 is intermittently conductive, and the carbon dioxide in the gas tank 1213 is sent into the first through groove 1208 through the rotary joint 1210, and is sprayed into the water from the first spray hole 1209. On the one hand, it increases the fluidity of water, and on the other hand, it can also increase the concentration of carbon dioxide in the water, promote the photosynthesis of microalgae, and thereby improve the removal efficiency of pollutants such as nitrogen and phosphorus in the wastewater.

[0029] Reference Figure 1-Figure 9 As shown, in a preferred embodiment, a flocculation mechanism 13 is installed in the first sedimentation bin 5 for further flocculating and precipitating impurities in the tail water. The flocculation mechanism 13 includes a fifth rotating shaft 1301, blades 1302 and a water receiving plate 1304. The fifth rotating shaft 1301 is rotatably installed in the inner cavity of the box body 1, and the blades 1302 are symmetrically fixedly installed on the surface of the fifth rotating shaft 1301. An overflow trough 1303 is opened between the purification bin 4 and the first sedimentation bin 5, and a water receiving plate 1304 is rotatably installed on the inner wall of the first sedimentation bin 5. After the tail water is purified by the microalgae in the planting box 1203, it flows out to the first sedimentation bin 5 through the overflow trough 1303 and impacts the blades 1302, thereby driving the blades 1302 to rotate, and intermittently discharges the water flow to the water receiving plate 1304 to impact the water receiving plate 1304.

[0030] Reference Figure 1-Figure 9 As shown, in a preferred embodiment, a liquid pumping cylinder 1305 is rotatably installed on the side wall of the first sedimentation bin 5, a piston 1306 is slidably installed in the inner cavity of the liquid pumping cylinder 1305, a connecting rod 1307 is fixedly installed on the surface of the piston 1306, one end of the connecting rod 1307 is rotatably connected to the water receiving plate 1304, a second spring 1308 is fixedly installed in the liquid pumping cylinder 1305, one end of the second spring 1308 is fixedly connected to the piston 1306, and is used to drive the piston 1306 to move upward, a one-way valve 1309 is symmetrically installed on the side wall of the liquid pumping cylinder 1305, and a solvent box 1310 is fixedly installed on the side wall of the box body 1, and a water supply is connected between one of the one-way valves 1309 and the solvent box 1310. Tube, and the one-way valve 1309 is unidirectionally conducted toward the inner cavity of the liquid pumping cylinder 1305 for liquid intake, a stopper 1311 is fixedly installed at one end of the water receiving plate 1304, a second through groove 1312 is provided in the inner cavity of the stopper 1311, a plurality of second spray holes 1313 are provided on the surface of the second through groove 1312, a water pipe is connected between the other one-way valve 1309 and the second through groove 1312, the one-way valve 1309 is unidirectionally conducted toward the outer wall of the liquid pumping cylinder 1305 for liquid discharge, a first filter hole 1314 is provided between the first sedimentation bin 5 and the second sedimentation bin 6, a second filter hole 1315 is provided between the second sedimentation bin 6 and the third sedimentation bin 7 for further purifying tail water.

[0031] In a preferred embodiment, after the tail water is purified by the microalgae in the planting box 1203, it flows out to the first sedimentation bin 5 through the overflow trough 1303 and impacts the blades 1302, thereby driving the blades 1302 to rotate, and intermittently discharges the water flow to the water receiving plate 1304, impacts the water receiving plate 1304, drives the connecting rod 1307 and the piston 1306 to move downward, and injects the flocculant in the pumping cylinder 1305 into the second through groove 1312, and sprays it out from the second spray hole 1313, mixes it into the tail water, and further flocculates and precipitates the impurities in the tail water, thereby improving the tail water purification effect.

[0032] A method for treating aquaculture tail water using marine microalgae, applicable to the above-mentioned device for treating aquaculture tail water using marine microalgae, comprises the following steps: S1: pretreatment; the tail water is passed into the filter cartridge 1101 through the water inlet pipe 8, the suspended solids and organic matter in the tail water are filtered to improve the subsequent purification efficiency, and the filter cartridge 1101 is driven to rotate by the motor 1104, driving the spiral blade 1107 to rotate, and the impurities accumulated on the inner wall of the filter cartridge 1101 are sent to the waste collection bin 3 for collection, and the surface of the filter cartridge 1101 is sprayed and washed by the nozzle 1111 to prevent the impurities from clogging the filter cartridge 1101; S2: Purification; the pre-treated water is sent into the purification chamber 4 by the water pump 1202, and the water in the purification chamber 4 is disturbed by the rotation of the second rotating shaft 1205 and the stirring rod 1206 to improve the fluidity of the water. The convex block 1221 rotates synchronously, driving the abutment block 1219 to drive the push rod 1218 to move back and forth, so that the L-shaped groove 1212 is intermittently connected, and the carbon dioxide in the gas tank 1213 is sent into the first through groove 1208 through the rotary joint 1210, and is sprayed into the water from the first spray hole 1209, which increases the fluidity of the water on the one hand, and increases the concentration of carbon dioxide in the water on the other hand, promoting the photosynthesis of microalgae; S3: Sedimentation; after the tail water is purified by the microalgae in the planting box 1203, it flows out to the first sedimentation bin 5 through the overflow trough 1303, and impacts the blade 1302, driving the blade 1302 to rotate, and intermittently discharges the water flow to the water receiving plate 1304, impacts the water receiving plate 1304, drives the connecting rod 1307 and the piston 1306 to move downward, and injects the flocculant in the pumping cylinder 1305 into the second through groove 1312, and sprays it out from the second spray hole 1313, mixes it into the tail water, and further flocculates and precipitates the impurities in the tail water.

[0033] Specifically, the working principle of the device for treating aquaculture tail water with marine microalgae is as follows: when in use, the tail water can be passed into the filter cartridge 1101 through the water inlet pipe 8, and the suspended matter and organic matter in the tail water can be filtered to improve the subsequent purification efficiency, and the first gear 1105 can be driven to rotate by the motor 1104, driving the ring gear 1103 and the filter cartridge 1101 to rotate, and the second pulley 1109 is driven to rotate by the first pulley 1108, thereby driving the spiral blade 1107 to rotate, and the impurities accumulated on the inner wall of the filter cartridge 1101 are sent to the waste collection bin 3 for collection, which is convenient for use, and water is sent into the branch pipe 1110 through the water pump 1202, and the surface of the filter cartridge 1101 is sprayed and washed by the nozzle 1111 to prevent impurities from clogging the filter cartridge 1101 and ensure the filtering effect.

[0034] The pre-treated water can be sent to the purification chamber 4 through the water pump 1202, and when the motor 1104 drives the filter cartridge 1101 to rotate, the third pulley 1207 can be driven to rotate through the second pulley 1109, thereby driving the second rotating shaft 1205 and the stirring rod 1206 to rotate, disturbing the water in the purification chamber 4, improving the fluidity of the water, ensuring the contact between the water flow and the microalgae, and improving the purification effect. When the second rotating shaft 1205 rotates, it drives the convex block 1221 to rotate synchronously, thereby driving the abutment block 12 19 drives the push rod 1218 to move back and forth, and drives the second gear 1216 through the tooth plate 1222 to drive the valve ball 1214 to rotate back and forth, so that the L-shaped groove 1212 is intermittently conductive, and the carbon dioxide in the gas tank 1213 is sent into the first through groove 1208 through the rotary joint 1210, and is sprayed into the water from the first spray hole 1209. On the one hand, the fluidity of the water is increased, and on the other hand, the concentration of carbon dioxide in the water can be increased, which promotes the photosynthesis of microalgae, thereby improving the removal efficiency of pollutants such as nitrogen and phosphorus in the wastewater.

[0035] After being purified by the microalgae in the planting box 1203, the tail water flows out to the first sedimentation bin 5 through the overflow trough 1303 and impacts the blades 1302, thereby driving the blades 1302 to rotate, and intermittently discharges the water flow to the water receiving plate 1304, impacts the water receiving plate 1304, drives the connecting rod 1307 and the piston 1306 to move downward, and injects the flocculant in the pumping cylinder 1305 into the second through groove 1312, and sprays it out from the second spray hole 1313, mixes it into the tail water, and further flocculates and precipitates the impurities in the tail water, thereby improving the tail water purification effect.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for treating aquaculture tail water using marine microalgae, characterized in that: The invention comprises a housing (1), a pretreatment mechanism (11) and a purification mechanism (12); the housing (1) is provided with a pretreatment bin (2), a waste collection bin (3), a purification bin (4), a first sedimentation bin (5), a second sedimentation bin (6) and a third sedimentation bin (7); the pretreatment mechanism (11) is installed in the pretreatment bin (2) and is used to pretreat tail water; the pretreatment mechanism (11) comprises: A filter cartridge (1101), wherein the filter cartridge (1101) is rotatably mounted in the pretreatment chamber (2) and is used to filter impurities in tail water; A first rotating shaft (1106), the first rotating shaft (1106) being rotatably mounted in the inner cavity of the housing (1), a spiral blade (1107) being fixedly mounted on the surface of the first rotating shaft (1106), the spiral blade (1107) being in contact with the inner wall of the filter cartridge (1101) and being used to deliver impurities in the filter cartridge (1101) into the waste collection bin (3); The purification mechanism (12) is installed in the purification chamber (4), and comprises a planting box (1203), a fill light (1204) and a second rotating shaft (1205). The planting box (1203) is installed in the purification chamber (4) and is used to plant microalgae. The fill light (1204) is symmetrically installed in the inner cavity of the box body (1), and the second rotating shaft (1205) is rotatably installed in the inner cavity of the box body (1), and a stirring rod (1206) is symmetrically installed on the surface of the second rotating shaft (1205).

2. The device for treating aquaculture tail water using marine microalgae according to claim 1, characterized in that: A water inlet pipe (8) is installed on the surface of the housing (1), one end of the water inlet pipe (8) is inserted into the filter cartridge (1101), a waste discharge pipe (9) is connected to the side wall of the waste collection bin (3), and a water outlet pipe (10) is connected to the side wall of the third sedimentation bin (7), a gear ring (1103) is fixedly installed on the surface of the filter cartridge (1101), a motor (1104) is fixedly installed on the surface of the housing (1), and a first gear (1105) is fixedly installed on the output end of the motor (1104), and the first gear (1105) is meshed with the gear ring (1103).

3. The device for treating aquaculture tail water using marine microalgae according to claim 2, characterized in that: A third rotating shaft (1102) is fixedly mounted on the inner wall of the filter cartridge (1101); a first belt pulley (1108) is fixedly mounted on one end of the third rotating shaft (1102); a second belt pulley (1109) is fixedly mounted on one end of the first rotating shaft (1106); a belt is connected between the first belt pulley (1108) and the second belt pulley (1109); a branch pipe (1110) is fixedly mounted on the surface of the housing (1); and a plurality of nozzles (1111) are mounted on the surface of the branch pipe (1110) for spraying and washing the surface of the filter cartridge (1101).

4. The device for treating aquaculture tail water using marine microalgae according to claim 3, characterized in that: A water distribution pipe (1201) is installed at the bottom of the purification chamber (4), a water pump (1202) is installed in the pretreatment chamber (2), a water pipe is connected between the water outlet of the water pump (1202) and the water distribution pipe (1201), a water pipe is connected between the branch pipe (1110) and the water outlet of the water pump (1202), a third pulley (1207) is fixedly installed at one end of the second rotating shaft (1205), and a belt is connected between the third pulley (1207) and the second pulley (1109).

5. The device for treating aquaculture tail water using marine microalgae according to claim 4, characterized in that: A first through groove (1208) is provided in the inner cavity of the second rotating shaft (1205) and the stirring rod (1206), a first spray hole (1209) is provided on the surface of the stirring rod (1206), and a rotary joint (1210) is rotatably mounted on one end of the second rotating shaft (1205), the rotary joint (1210) being in communication with the first through groove (1208).

6. The device for treating aquaculture tail water using marine microalgae according to claim 5, characterized in that: A control box (1211) is installed on the side wall of the box body (1), an L-shaped groove (1212) is provided in the control box (1211), a gas tank (1213) is installed on the side wall of the box body (1), the gas tank (1213) is filled with carbon dioxide, an air pipe is connected between one end of the L-shaped groove (1212) and the rotary joint (1210), and an air pipe is connected between the other end of the L-shaped groove (1212) and the gas tank (1213).

7. The device for treating aquaculture tail water using marine microalgae according to claim 6, characterized in that: A valve ball (1214) is rotatably mounted in the control box (1211), a fourth rotating shaft (1215) is fixedly mounted on the side wall of the valve ball (1214), a second gear (1216) is fixedly mounted on one end of the fourth rotating shaft (1215), a mounting ring (1217) is fixedly mounted in the inner cavity of the box body (1), a push rod (1218) is slidably mounted in the inner cavity of the mounting ring (1217), an abutment block (1219) is fixedly mounted on one end of the push rod (1218), a first spring (1220) is sleeved on the surface of the push rod (1218), and the first spring (122 0) one end is fixedly connected to the mounting ring (1217), the other end of the first spring (1220) is fixedly connected to the abutment block (1219) and is used to drive the abutment block (1219) to move in the direction of the second rotating shaft (1205), a protrusion (1221) is fixedly installed on the surface of the second rotating shaft (1205), the protrusion (1221) is in contact with the surface of the abutment block (1219) and is used to drive the push rod (1218) to move, and a tooth plate (1222) is fixedly installed on the other end of the push rod (1218), and the tooth plate (1222) is meshed with the second gear (1216).

8. The device for treating aquaculture tail water using marine microalgae according to claim 7, characterized in that: A flocculation mechanism (13) is installed in the first sedimentation bin (5), and the flocculation mechanism (13) comprises a fifth rotating shaft (1301), blades (1302) and a water receiving plate (1304); the fifth rotating shaft (1301) is rotatably installed in the inner cavity of the casing (1); the blades (1302) are symmetrically fixedly installed on the surface of the fifth rotating shaft (1301); an overflow trough (1303) is provided between the purification bin (4) and the first sedimentation bin (5); and the water receiving plate (1304) is rotatably installed on the inner wall of the first sedimentation bin (5).

9. The device for treating aquaculture tail water using marine microalgae according to claim 8, characterized in that: A liquid extraction cylinder (1305) is rotatably mounted on the side wall of the first sedimentation bin (5), a piston (1306) is slidably mounted in the inner cavity of the liquid extraction cylinder (1305), a connecting rod (1307) is fixedly mounted on the surface of the piston (1306), one end of the connecting rod (1307) is rotatably connected to the water receiving plate (1304), a second spring (1308) is fixedly mounted in the liquid extraction cylinder (1305), one end of the second spring (1308) is fixedly connected to the piston (1306) and is used to drive the piston (1306) to move upward, a one-way valve (1309) is symmetrically mounted on the side wall of the liquid extraction cylinder (1305), and a solvent tank (1307) is fixedly mounted on the side wall of the box body (1). 310), a water pipe is connected between one of the one-way valves (1309) and the solvent box (1310), a block (1311) is fixedly installed at one end of the water receiving plate (1304), a second through groove (1312) is provided in the inner cavity of the block (1311), and a plurality of second spray holes (1313) are provided on the surface of the second through groove (1312), a water pipe is connected between the other one-way valve (1309) and the second through groove (1312), a first filter hole (1314) is provided between the first sedimentation bin (5) and the second sedimentation bin (6), and a second filter hole (1315) is provided between the second sedimentation bin (6) and the third sedimentation bin (7).

10. A method for treating aquaculture tail water using marine microalgae, applicable to the device for treating aquaculture tail water using marine microalgae as claimed in claim 9, characterized in that: The steps include: S1: pretreatment; the tail water is passed into the filter cartridge (1101) through the water inlet pipe (8), the suspended solids and organic matter in the tail water are filtered, and the subsequent purification efficiency is improved; the filter cartridge (1101) is driven to rotate by the motor (1104), and the spiral blade (1107) is driven to rotate, and the impurities accumulated on the inner wall of the filter cartridge (1101) are sent to the waste collection bin (3) for collection, and the surface of the filter cartridge (1101) is sprayed and washed by the nozzle (1111) to prevent the impurities from clogging the filter cartridge (1101); S2: Purification; the pre-treated water is sent into the purification chamber (4) through the water pump (1202); the second rotating shaft (1205) and the stirring rod (1206) are rotated to disturb the water in the purification chamber (4) to improve the fluidity of the water; the convex block (1221) is synchronously rotated to drive the abutment block (1219) to drive the push rod (1218) to move back and forth, so that the L-shaped groove (1212) is intermittently connected, and the carbon dioxide in the gas tank (1213) is sent into the first through groove (1208) through the rotating joint (1210) and sprayed into the water through the first spray hole (1209), thereby increasing the fluidity of the water on the one hand and increasing the concentration of carbon dioxide in the water on the other hand, thereby promoting the photosynthesis of microalgae; S3: sedimentation; after being purified by the microalgae in the planting box (1203), the tail water flows out into the first sedimentation bin (5) through the overflow trough (1303), impacts the blades (1302), drives the blades (1302) to rotate, and intermittently discharges the water flow to the water receiving plate (1304), impacts the water receiving plate (1304), drives the connecting rod (1307) and the piston (1306) to move downward, injects the flocculant in the pumping cylinder (1305) into the second through groove (1312), and sprays it out from the second spray hole (1313), mixes it into the tail water, and further flocculates and precipitates the impurities in the tail water.

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