CN115947470A - Minced fillet rinsing wastewater treatment system - Google Patents
Minced fillet rinsing wastewater treatment system Download PDFInfo
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- CN115947470A CN115947470A CN202211230524.0A CN202211230524A CN115947470A CN 115947470 A CN115947470 A CN 115947470A CN 202211230524 A CN202211230524 A CN 202211230524A CN 115947470 A CN115947470 A CN 115947470A
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 176
- 238000004062 sedimentation Methods 0.000 claims abstract description 79
- 238000005189 flocculation Methods 0.000 claims abstract description 54
- 230000016615 flocculation Effects 0.000 claims abstract description 54
- 239000002893 slag Substances 0.000 claims abstract description 24
- 238000005192 partition Methods 0.000 claims description 85
- 238000004581 coalescence Methods 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 15
- 239000010865 sewage Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- 238000005188 flotation Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 235000019465 surimi Nutrition 0.000 claims 4
- 238000005276 aerator Methods 0.000 claims 2
- 108090000623 proteins and genes Proteins 0.000 abstract description 23
- 102000004169 proteins and genes Human genes 0.000 abstract description 23
- 238000001556 precipitation Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 9
- 239000002351 wastewater Substances 0.000 description 30
- 235000019198 oils Nutrition 0.000 description 16
- 238000000034 method Methods 0.000 description 14
- 239000002245 particle Substances 0.000 description 11
- 238000009826 distribution Methods 0.000 description 10
- 238000005273 aeration Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 239000008394 flocculating agent Substances 0.000 description 6
- 239000006260 foam Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000004519 grease Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 235000013372 meat Nutrition 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 108010028690 Fish Proteins Proteins 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000008237 rinsing water Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 235000021323 fish oil Nutrition 0.000 description 1
- 235000013332 fish product Nutrition 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000000751 protein extraction Methods 0.000 description 1
- 230000006920 protein precipitation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a minced fillet rinsing wastewater treatment system which comprises a deoiling and deslagging device, a flocculation tank and a sedimentation tank, wherein the deoiling and deslagging device is provided with a deoiling and deslagging device water inlet pipe and a deoiling and deslagging device water outlet pipe; the top of the flocculation tank is connected with a flocculation tank water inlet pipe and a dosing pipe, and the bottom of the flocculation tank is connected with a flocculation tank water outlet pipe; the lower side of the outer wall of the settling tank is connected with a water inlet pipe of the settling tank, the upper side of the outer wall of the settling tank is connected with a water outlet pipe of the settling tank, and the bottom of the settling tank is connected with a settling discharge pipe; the oil and slag removing device is connected between the water outlet and the flocculation tank water inlet pipe and between the flocculation tank water outlet pipe and the sedimentation tank water inlet pipe through pipelines. The invention has simple structure, difficult blockage, stable operation, high protein flocculation and precipitation efficiency and good precipitation effect.
Description
Technical Field
The invention relates to the technical field of minced fillet rinsing wastewater treatment, in particular to a minced fillet rinsing wastewater treatment system.
Background
The minced fish product is prepared by taking fish as a raw material and processing the fish through the procedures of meat collection, rinsing, fine filtration, dehydration, stirring, molding, heating and the like, has high nutritional value and is popular with consumers. During the rinsing process of fish meat, a large amount of waste water rich in water-soluble protein is generated, and particularly, the concentration of the protein in the rinsing liquid in the first stage can be as high as 5-30 mg/ml. The rinsing wastewater is usually directly discharged as industrial wastewater, which not only causes resource waste, but also pollutes the environment, so that the recycling of the protein in the minced fillet rinsing wastewater is very important.
The main methods for recovering soluble protein at present comprise a flocculation precipitation method, an isoelectric point precipitation method, a membrane separation method, a resistance heating method and the like, and compared with the methods for recovering protein, the resistance heating method has the advantages of high cleaning degree, large power consumption and high cost; the membrane separation method is efficient, but has the problems of membrane pollution and high operation cost; the traditional isoelectric point method has lower cost for recovering protein, but the effect is not ideal; the flocculation precipitation method has the advantages of convenient operation, low price, high protein recovery rate and the like, so the method is the most common recovery method for recovering soluble protein in the minced fillet rinsing wastewater at present.
An authorized announcement number CN204560832U, chinese patent of 2015, 8.19.s.a.c. discloses a device for extracting fish protein in minced fillet rinsing water, which comprises a support, wherein a filter tank, a sedimentation cylinder and a constant-temperature oven are arranged on the support, the lower end of the filter tank is a net-shaped filter frame, filter gauze is laid on the filter frame, an arc-shaped water collecting plate is arranged below the filter tank, the water collecting plate is obliquely arranged, the lower end of the water collecting plate is close to the opening edge of the upper end of the sedimentation cylinder, a stirring mechanism is arranged above the sedimentation cylinder and comprises a driving motor and a stirring impeller, the stirring impeller is arranged in the sedimentation cylinder, the stirring impeller can be vertically adjusted and connected to the output shaft of the driving motor, a row of water discharge holes are arranged on the side wall of the sedimentation cylinder from top to bottom, and a plugging head is hermetically connected to the water discharge holes. The device has the following defects: (1) filtering by using gauze, wherein the gauze is easy to block; (2) The device can not remove impurities such as foam, fish oil and the like in the wastewater, and can influence the coagulation and precipitation of protein, thereby influencing the recovery rate of the protein; (3) low efficiency of coagulation and precipitation and poor effect.
Disclosure of Invention
The invention aims to solve the technical problems of the fish protein extraction device in minced fillet rinsing water in the prior art, and provides the minced fillet rinsing wastewater treatment system which is simple in structure, not easy to block, stable in operation, low in operation cost, high in protein flocculation and precipitation efficiency and good in precipitation effect.
In order to achieve the purpose, the invention adopts the following technical scheme: the invention discloses a minced fillet rinsing wastewater treatment system which comprises a deoiling and deslagging device, a flocculation tank and a sedimentation tank, wherein the deoiling and deslagging device is provided with a deoiling and deslagging device water inlet pipe and a deoiling and deslagging device water outlet pipe; the top of the flocculation tank is connected with a flocculation tank water inlet pipe and a dosing pipe, and the bottom of the flocculation tank is connected with a flocculation tank water outlet pipe; the lower side of the outer wall of the settling tank is connected with a water inlet pipe of the settling tank, the upper side of the outer wall of the settling tank is connected with a water outlet pipe of the settling tank, and the bottom of the settling tank is connected with a settling discharge pipe; the oil and slag removal device is connected with the flocculation tank water inlet pipe through pipelines and connected with the flocculation tank water outlet pipe and the sedimentation tank water inlet pipe through pipelines. The invention designs a minced fillet rinsing wastewater treatment system which comprises a deoiling and deslagging device, a flocculation tank and a precipitation tank, wherein the flocculation tank is connected with the precipitation tank; the minced fillet rinsing wastewater (raw water) contains impurities such as foam, grease, solid particles (minced meat, fishbone and the like), suspended solids (colloid and the like), so that the using amount of a flocculating agent can be increased, the consumption cost of the medicine is greatly increased, and the flocculation efficiency and effect can be influenced; in addition, flocculation and sedimentation are respectively carried out in a flocculation tank and a sedimentation tank, and the two processes of flocculation and sedimentation are not mutually interfered and can be independently carried out, so that the efficiency is high.
Preferably, the oil and slag removing device comprises a box body, wherein a first partition plate, a second partition plate, a third partition plate and a fourth partition plate are arranged in the box body, and divide the inner space of the box body into a filtering area, a primary settling area, an air floating area, a floating removing area and a water outlet area through the first partition plate, the second partition plate, the third partition plate and the fourth partition plate; a water tank is arranged on the top surface of the box body, which is positioned at the top of the filtering area, a mounting hole is formed in the bottom of the water tank, a filter tank is arranged in the mounting hole, the oil and slag removing device is connected to the water tank through a water inlet pipe, and a water passing hole is formed in the lower part of the first partition plate; a water passing port is formed between the top of the second partition plate and the top surface of the box body, corrugated folded plates are arranged in the primary sedimentation area, and a sedimentation channel is formed by gaps among the corrugated folded plates; an air floating assembly is arranged in the middle of the air floating area, and an overflow port is formed between the top of the third partition plate and the top surface of the box body; the upper part of the floating removal area is provided with an overflow sewage tank which is fixed on the side surface of the fourth clapboard positioned on the floating removal area, the wall of the overflow sewage tank is provided with a sewage discharge outlet, a water outlet pipe is arranged below the overflow sewage tank, one end of the water outlet pipe is closed, the other end of the water outlet pipe is fixed on the fourth clapboard and is communicated with the water outlet area, and the bottom of the water outlet pipe is provided with water holes at intervals along the axial direction; and the water outlet pipe of the oil and slag removal device is connected to the box body positioned in the water outlet area. The oil and slag removal device integrates multiple functions, the structure is compact, the treatment efficiency is high, minced fillet rinsing wastewater (raw water) enters the water tank through the water inlet pipe of the oil and slag removal device and then falls into the filter tank for filtration, the shape of the filter tank can be set as required, the filter tank is provided with filter holes, the filtered minced fillet rinsing wastewater falls into the bottom of the filter area and enters the primary sedimentation area through the water holes and then slowly moves upwards along the sedimentation channel between the corrugated folding plates, and the corrugated folding plates play the roles of distributing water flow and stabilizing flow state, so that suspended particles can be mutually gathered in the sedimentation channel to form large particles for sedimentation; the air floatation component can generate tiny bubbles, and the tiny (small-density) suspended particles, foams and grease are brought to the water surface through the adhesion and floating action and then are discharged out of the overflow trough through the overflow port, so that the impurities such as the foams and the grease are removed; the pretreated minced fillet rinsing wastewater enters and is collected into the water outlet pipe through the water holes on the water outlet pipe, and enters the water outlet area through the water outlet pipe, the water holes are arranged at the bottom of the water outlet pipe, and water enters the water outlet pipe from bottom to top, so that the entrainment of solid impurities can be reduced.
Preferably, a liquid collecting hopper is arranged in the filtering area, the liquid collecting hopper is positioned below the filter tank, and the bottom of the liquid collecting hopper is connected with a water guide pipe extending below the liquid level. The aqueduct can reduce the disturbance of the minced fillet rinsing wastewater falling from the filter tank to the minced fillet rinsing wastewater at the bottom of the filter area so as to reduce the entrainment of solid particles when the minced fillet rinsing wastewater enters the primary sedimentation area.
Preferably, a water baffle is arranged between the first partition plate and the second partition plate, the lower end of the water baffle extends to the position below the water through hole, and a gap is reserved between the lower end of the water baffle and the bottom surface of the box body. The breakwater lower extreme extends to water hole below to can block the minced fillet rinsing waste water that flows from the water hole completely, can prevent to cause the impact to the minced fillet rinsing waste water in the district that just sinks from the minced fillet rinsing waste water that flows out of water hole when reducing the velocity of flow, influence just sink the smooth ascending entering of minced fillet rinsing waste water in the district and subside in the passageway.
Preferably, the corrugated folding plates are arranged between the water baffle and the second partition plate, and the wave crests of the adjacent corrugated folding plates are opposite to the wave crests, and the wave troughs are opposite to the wave troughs to form staggered arrangement. The wave crests of the adjacent corrugated folding plates are opposite to the wave crests, and the wave troughs are opposite to the wave troughs to form staggered arrangement.
Preferably, a guide plate is arranged between the second partition plate and the third partition plate, a gap is reserved between the lower end of the guide plate and the bottom surface of the box body, and a guide channel is formed by the gap between the guide plate and the second partition plate.
Preferably, the air flotation assembly comprises an aeration pipe and a flow distribution assembly, the flow distribution assembly is arranged below the aeration pipe and comprises an upper partition plate and a lower partition plate, the upper partition plate and the lower partition plate are respectively fixed between the guide plate and the third partition plate, a flow distribution pipe is fixed between the upper partition plate and the lower partition plate, and the upper end and the lower end of the flow distribution pipe respectively penetrate through the upper partition plate and the lower partition plate. The reposition of redundant personnel subassembly can also play elimination torrent and guide effect in evenly distributed water to the microbubble that the aeration pipe produced can be directly, fast bring tiny (density is less) suspended particles, foam and grease to the surface of water fast.
Preferably, the flocculation tank comprises a tank body, a stirrer and a jacket, the jacket is arranged outside the tank body, a steam cavity is formed in a gap between the jacket and the tank body, a steam pipe and a condensate pipe are arranged on the jacket, a water inlet pipe and a chemical feeding pipe of the flocculation tank extend into the tank body and are positioned below the liquid level, a plurality of baffle plates are arranged on the inner wall of the tank body at intervals along the circumferential direction, and the lower ends of the baffle plates extend and intersect at the center of the bottom of the tank body. The dosing pipe can be filled with a flocculating agent and/or a pH regulator; the flocculation tank is used for introducing a flocculating agent and/or a pH regulator, and the minced fillet rinsing wastewater can be fully mixed with the flocculating agent under the stirring condition and/or the heating condition so as to ensure that the protein can be fully coagulated and form floccules; the baffle plate ensures that the mixture is fully and uniformly mixed and has no mixing dead angle.
Preferably, an upper fixing plate and a lower fixing plate are arranged in the settling tank, a clear water area is formed in the space between the upper fixing plate and the top of the tank body, a settling area is formed in the space between the lower fixing plate and the bottom of the tank body, the settling tank is connected to the outer wall of the settling tank in the settling area through a water inlet pipe, the settling discharge pipe is connected to the bottom of the settling tank, a water outlet pipe of the settling tank is connected to the outer wall of the settling tank in the clear water area, a settling inclined pipe is arranged between the upper fixing plate and the lower fixing plate, the upper end and the lower end of the settling inclined pipe are communicated with the clear water area and the settling area respectively, and the lower end of the settling inclined pipe is exposed out of the lower fixing plate and extends to the lower part of an outlet of the water inlet pipe of the settling tank. The sedimentation tank is used for precipitating and separating protein; the sedimentation inclined tube can reduce the speed of the minced fillet rinsing wastewater, is beneficial to the sedimentation of protein, and simultaneously enables the protein sedimentation direction to be opposite to the flowing direction of the minced fillet rinsing wastewater, so that the entrainment amount of the protein in the minced fillet rinsing wastewater can be reduced; the lower end of the inclined sedimentation pipe is exposed out of the lower fixing plate and extends to the lower part of the outlet of the water inlet pipe of the sedimentation tank, so that disturbance to the minced fillet rinsing wastewater is reduced.
Preferably, a coalescence plate is arranged in the sedimentation inclined tube and is arranged in a staggered mode at intervals along the axial direction of the sedimentation inclined tube, a clearance between the coalescence plates forms a back-and-forth bent sedimentation channel, a coalescence groove is arranged on the lower surface of the coalescence plate, and the length direction of the coalescence groove is parallel to the radial direction of the sedimentation inclined tube. The sedimentation channel is bent back and forth, so that the flow rate of the minced fillet rinsing wastewater can be reduced, the protein entrainment can be reduced, and the protein recovery rate can be improved; the fine protein can enter the coalescence tank along the surface of the coalescence plate, and is deposited after being accumulated and formed into large particles, thereby being beneficial to improving the protein deposition effect.
Therefore, the invention has the following beneficial effects:
(1) Through the matching of the oil and slag removal device, the flocculation tank and the sedimentation tank, the device has the advantages of simple structure, difficult blockage, stable operation, low operation cost, high protein flocculation and sedimentation efficiency and good sedimentation effect;
(2) Can reduce the usage amount of the flocculating agent and improve the flocculation and precipitation effects.
Drawings
Fig. 1 is a schematic illustration of a connection according to the present invention.
Fig. 2 is a schematic diagram of the internal structure of the oil and slag removal device.
Fig. 3 is a schematic view of the internal structure of the flocculation tank.
Fig. 4 is a schematic view of the internal structure of the settling tank.
Figure 5 is a cross-sectional view of a settling down tube.
Fig. 6 is an enlarged view at a in fig. 5.
In the figure: the device comprises an oil and slag removal device 1, a flocculation tank 2, a sedimentation tank 3, an oil and slag removal device water inlet pipe 4, an oil and slag removal device water outlet pipe 5, a flocculation tank water inlet pipe 6, a chemical feeding pipe 7, a flocculation tank water outlet pipe 8, a sedimentation tank water inlet pipe 9, a sedimentation tank water outlet pipe 10, a sedimentation discharge pipe 11, a box body 12, a first partition plate 13, a second partition plate 14, a third partition plate 15, a fourth partition plate 16, a filtering area 17, a primary sedimentation area 18, an air flotation area 19, a de-flotation area 20, a water outlet area 21, a filtering tank 22, a water through hole 23, a water through hole 24, a corrugated folded plate 25, a sedimentation channel 26, an overflow port 27, a dirt overflow tank 28, a dirt discharge port 29, a water outlet pipe 30, a water hole 31, a liquid collection hopper 32, a water guide pipe 33, a water baffle 34, a flow guide plate 35, a flow guide channel 36, an aeration pipe 37, an upper partition plate 38, a lower partition plate 39, a flow dividing pipe 40, a tank body 41, a stirrer 42, a jacket 43, a steam cavity 44, a steam cavity 45, a coalescence water pipe 46, a coalescence baffle 47, an upper fixing plate 48, a lower fixing plate 49, a clear water sedimentation area 50, a sedimentation area 51, an inclined sedimentation pipe 53, a steam pipe 53, a coalescence channel 55, a coalescence tank 55.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
The minced fillet rinsing wastewater treatment system shown in figure 1 comprises a degreasing and deslagging device 1, a flocculation tank 2 and a sedimentation tank 3; the oil and slag removing device (shown in figure 2) comprises a box body 12, wherein a first partition plate 13, a second partition plate 14, a third partition plate 15 and a fourth partition plate 16 are arranged in the box body, and the first partition plate, the second partition plate, the third partition plate and the fourth partition plate divide the inner space of the box body into a filtering area 17, a primary settling area 18, an air floating area 19, a floating removing area 20 and a water outlet area 21; a water tank 56 is arranged on the top surface of the box body, which is positioned at the top of the filtering area, a mounting hole is arranged at the bottom of the water tank, a filter 22 is arranged in the mounting hole, a water inlet pipe 4 of an oil and slag removing device is connected to the water tank, a water through hole 23 is arranged at the lower part of the first partition plate, a water through hole 24 is arranged between the top of the second partition plate and the top surface of the box body, a water baffle 34 is arranged between the first partition plate and the second partition plate, the lower end of the water baffle extends to the lower part of the water through hole, and a gap is reserved between the lower end of the water baffle and the bottom surface of the box body; a liquid collecting hopper 32 is arranged in the filtering area, the liquid collecting hopper is positioned below the filter tank, and the bottom of the liquid collecting hopper is connected with a water guide pipe 33 extending below the liquid level; corrugated folded plates 25 are arranged between the water baffle and the second partition plate, the wave crests of adjacent corrugated folded plates are opposite to the wave crests, the wave troughs are opposite to the wave troughs, and the corrugated folded plates are arranged in a staggered manner, and a settling channel 26 is formed in a gap between the corrugated folded plates; an overflow port 27 is arranged between the top of the third clapboard and the top surface of the box body, a guide plate 35 is arranged between the second clapboard and the third clapboard, a gap is reserved between the lower end of the guide plate and the bottom surface of the box body, and a guide channel 36 is formed by the gap between the guide plate and the second clapboard; an air floatation assembly is arranged in the middle between the guide plate and the third partition plate, the air floatation assembly comprises an aeration pipe 37 and a flow distribution assembly, the flow distribution assembly is arranged below the aeration pipe, the flow distribution assembly comprises an upper partition plate 38 and a lower partition plate 39, the upper partition plate and the lower partition plate are respectively fixed between the guide plate and the third partition plate, a flow distribution pipe 40 is fixed between the upper partition plate and the lower partition plate, and the upper end and the lower end of the flow distribution pipe respectively penetrate through the upper partition plate and the lower partition plate; an overflow sewage tank 28 is arranged at the upper part of the floating removal area, the overflow sewage tank is fixed on the side surface of the fourth partition plate positioned on the floating removal area, a sewage discharge outlet 29 is arranged on the wall of the overflow sewage tank, a water outlet pipe 30 is arranged below the overflow sewage tank, one end of the water outlet pipe is closed, the other end of the water outlet pipe is fixed on the fourth partition plate and communicated with the water outlet area, and water holes 31 are arranged at the bottom of the water outlet pipe along the axial direction at intervals; a water outlet pipe 5 of the oil and slag removal device is connected to the box body positioned in the water outlet area; the flocculation tank comprises a tank body 41, a stirrer 42 and a jacket 43 (shown in figure 3), the jacket is arranged outside the tank body, a steam cavity 44 is formed in a gap between the jacket and the tank body, a steam pipe 45 and a condensate pipe 46 are arranged on the jacket, a flocculation tank water inlet pipe 6 and a chemical feeding pipe 7 are connected to the top of the tank body, a flocculation tank water outlet pipe 8 is connected to the bottom of the tank body, the flocculation tank water inlet pipe and the chemical feeding pipe extend into the tank body and are positioned below the liquid level, a plurality of baffle plates 47 are arranged on the inner wall of the tank body at intervals along the circumferential direction, and the lower ends of the baffle plates extend and intersect at the center of the bottom of the tank body; an upper fixing plate 48 and a lower fixing plate 49 (shown in figure 4) are arranged in the sedimentation tank, a clear water area 50 is formed in the space between the upper fixing plate and the top of the tank body, a sedimentation area 51 is formed in the space between the lower fixing plate and the bottom of the tank body, a sedimentation tank water inlet pipe 9 is connected to the outer wall of the sedimentation tank in the settling area, a sedimentation tank water outlet pipe 10 is connected to the outer wall of the sedimentation tank in the clear water area, a sedimentation discharge pipe 11 is connected to the bottom of the sedimentation tank, a sedimentation inclined pipe 52 is arranged between the upper fixing plate and the lower fixing plate, the upper end and the lower end of the sedimentation inclined pipe are respectively communicated with the clear water area and the sedimentation area, the lower end of the sedimentation inclined pipe is exposed out of the lower fixing plate and extends to the lower part of the outlet of the sedimentation tank water inlet pipe, a coalescence plate 53 (shown in figures 5 and 6) is arranged in the sedimentation inclined pipe in an axially staggered mode at intervals, a gap between the coalescence plates forms a sedimentation channel 54 which is bent back and forth, a coalescence groove 55 is arranged on the lower surface of the coalescence plate, and the coalescence groove is parallel to the radial direction of the sedimentation inclined pipe; the water outlet of the oil and slag removing device is connected with the water inlet pipe of the flocculation tank, and the water outlet pipe of the flocculation tank is connected with the water inlet pipe of the sedimentation tank through pipelines.
The operation process of the invention is as follows: conveying the minced fillet rinsing wastewater from the water inlet pipe of the oil and slag removal device to a water tank, and directly dropping the minced fillet rinsing wastewater into a filter tank to filter out larger solid particles; the filtered minced fillet rinsing wastewater falls to the bottom of the filtering area, flows to the primary sedimentation area through the water holes, slowly moves upwards along the sedimentation channel between the corrugated folded plates, and suspended particles are mutually aggregated in the sedimentation channel to form large particles which are then precipitated to the bottom of the primary sedimentation area; minced fillet rinsing wastewater flowing out of the top of the sedimentation channel enters the flow guide channel through the water gap, and enters the bottom of the air flotation zone from the flow guide channel, and after the minced fillet rinsing wastewater is uniformly distributed through the flow distribution pipes, fine suspended particles, foams and grease with small density are brought to the water surface (top) by the tiny bubbles generated by the aeration pipe through the adhesion and floating actions, and then the minced fillet rinsing wastewater overflows into the overflow sewage tank through the overflow port and is discharged; clear water enters from the water holes on the water outlet pipe and is collected into the water outlet pipe, and then enters the water outlet area through the water outlet pipe; conveying the minced fillet rinsing wastewater in the water outlet area into a flocculation tank through a flocculation tank water inlet pipe, adding a flocculating agent and/or a pH regulator into the flocculation tank according to actual conditions, introducing steam for heating according to actual conditions, and fully coagulating protein under stirring conditions to form floccules; conveying minced fillet rinsing wastewater which is coagulated in the flocculation tank and forms flocs to a precipitation zone in the precipitation tank, performing liquid-solid precipitation separation through a precipitation inclined tube, precipitating protein at the bottom of the precipitation zone, and allowing clear water to rise into a clear water zone and be discharged through a water outlet pipe of the precipitation tank.
The above-described embodiment is a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A minced fillet rinsing wastewater treatment system is characterized by comprising an oil and slag removal device (1), a flocculation tank (2) and a sedimentation tank (3), wherein the oil and slag removal device is provided with an oil and slag removal device water inlet pipe (4) and an oil and slag removal device water outlet pipe (5); the top of the flocculation tank is connected with a flocculation tank water inlet pipe (6) and a dosing pipe (7), and the bottom of the flocculation tank is connected with a flocculation tank water outlet pipe (8); a sedimentation tank water inlet pipe (9) is connected to the lower side of the outer wall of the sedimentation tank, a sedimentation tank water outlet pipe (10) is connected to the upper side of the outer wall of the sedimentation tank, and a sedimentation discharge pipe (11) is connected to the bottom of the sedimentation tank; the oil and slag removal device is connected with the flocculation tank water inlet pipe through pipelines and connected with the flocculation tank water outlet pipe and the sedimentation tank water inlet pipe through pipelines.
2. The minced fillet rinsing wastewater treatment system as claimed in claim 1, wherein the oil and residue removing device comprises a tank body (12), a first partition plate (13), a second partition plate (14), a third partition plate (15) and a fourth partition plate (16) are arranged in the tank body, and the first partition plate, the second partition plate, the third partition plate and the fourth partition plate divide the internal space of the tank body into a filtering area (17), a primary settling area (18), an air floating area (19), a floating removing area (20) and a water outlet area (21); a water tank (56) is arranged on the top surface of the box body, which is positioned at the top of the filtering area, a mounting hole is arranged at the bottom of the water tank, a filter tank (22) is arranged in the mounting hole, the oil and slag removing device is connected to the water tank through a water inlet pipe, and a water through hole (23) is arranged at the lower part of the first partition plate; a water passing port (24) is formed between the top of the second partition plate and the top surface of the box body, corrugated folded plates (25) are arranged in the primary sedimentation area, and a sedimentation channel (26) is formed in gaps among the corrugated folded plates; an air floating assembly is arranged in the middle of the air floating area, and an overflow port (27) is formed between the top of the third partition plate and the top surface of the box body; an overflow sewage tank (28) is arranged at the upper part of the floating removal area, the overflow sewage tank is fixed on the side surface of the fourth partition plate positioned on the floating removal area, a sewage discharge outlet (29) is arranged on the wall of the overflow sewage tank, a water outlet pipe (30) is arranged below the overflow sewage tank, one end of the water outlet pipe is closed, the other end of the water outlet pipe is fixed on the fourth partition plate and communicated with the water outlet area, and water holes (31) are arranged at the bottom of the water outlet pipe along the axial direction at intervals; and the water outlet pipe of the oil and slag removal device is connected to the box body positioned in the water outlet area.
3. The surimi rinsing wastewater treatment system according to claim 2, wherein a collecting hopper (32) is arranged in the filtering area, the collecting hopper is positioned below the filter tank, and the bottom of the collecting hopper is connected with a water guide pipe (33) extending below the liquid level.
4. The minced fillet rinsing wastewater treatment system as claimed in claim 2, wherein a water baffle (34) is arranged between the first partition and the second partition, the lower end of the water baffle extends below the water through hole, and a gap is left between the lower end of the water baffle and the bottom surface of the tank body.
5. The system of claim 4, wherein the corrugated flaps are disposed between the water baffle and the second partition, and the adjacent corrugated flaps have the opposite peaks and the opposite valleys alternately.
6. The minced fillet rinsing wastewater treatment system as claimed in claim 2, wherein a flow guide plate (35) is arranged between the second partition plate and the third partition plate, a gap is formed between the lower end of the flow guide plate and the bottom surface of the tank body, and a flow guide channel (36) is formed by the gap between the flow guide plate and the second partition plate.
7. The surimi rinsing wastewater treatment system according to claim 2, wherein the air flotation assembly comprises an aerator pipe (37) and a flow dividing assembly, the flow dividing assembly is arranged below the aerator pipe and comprises an upper partition plate (38) and a lower partition plate (39), the upper partition plate and the lower partition plate are respectively fixed between the guide plate and the third partition plate, a flow dividing pipe (40) is fixed between the upper partition plate and the lower partition plate, and the upper end and the lower end of the flow dividing pipe respectively penetrate through the upper partition plate and the lower partition plate.
8. The surimi rinsing wastewater treatment system according to claim 1, wherein the flocculation tank comprises a tank body (41), a stirrer (42) and a jacket (43), the jacket is arranged outside the tank body, a steam cavity (44) is formed in a gap between the jacket and the tank body, a steam pipe (45) and a condensate pipe (46) are arranged on the jacket, a water inlet pipe and a chemical feeding pipe of the flocculation tank extend into the tank body and are positioned below the liquid level, a plurality of baffle plates (47) are arranged on the inner wall of the tank body at intervals along the circumferential direction, and the lower ends of the baffle plates extend to and intersect with the center of the bottom of the tank body.
9. The surimi rinsing wastewater treatment system according to claim 1, wherein an upper fixing plate (48) and a lower fixing plate (49) are arranged in the settling tank, a clear water area (50) is formed in a space between the upper fixing plate and the top of the tank body, a settling area (51) is formed in a space between the lower fixing plate and the bottom of the tank body, the settling tank is connected to the outer wall of the settling tank in the settling area through a water inlet pipe, the settling discharge pipe is connected to the bottom of the settling tank, a water outlet pipe of the settling tank is connected to the outer wall of the settling tank in the clear water area, a settling inclined pipe (52) is arranged between the upper fixing plate and the lower fixing plate, the upper end and the lower end of the settling inclined pipe are respectively communicated with the clear water area and the settling area, and the lower end of the settling inclined pipe is exposed out of the lower fixing plate and extends to the position below an outlet of the water inlet pipe of the settling tank.
10. The minced fillet rinsing wastewater treatment system as claimed in claim 9, wherein the inclined sedimentation pipe is internally provided with coalescence plates (53) which are arranged in a staggered manner at intervals along the axial direction of the inclined sedimentation pipe, gaps between the coalescence plates form a back-and-forth bent sedimentation channel (54), and the lower surface of each coalescence plate is provided with coalescence grooves (55) the length direction of which is parallel to the radial direction of the inclined sedimentation pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211230524.0A CN115947470A (en) | 2022-10-08 | 2022-10-08 | Minced fillet rinsing wastewater treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211230524.0A CN115947470A (en) | 2022-10-08 | 2022-10-08 | Minced fillet rinsing wastewater treatment system |
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| CN115947470A true CN115947470A (en) | 2023-04-11 |
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| CN202211230524.0A Pending CN115947470A (en) | 2022-10-08 | 2022-10-08 | Minced fillet rinsing wastewater treatment system |
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