CN218879635U

CN218879635U - Aquaculture tail water treatment system

Info

Publication number: CN218879635U
Application number: CN202222423631.7U
Authority: CN
Inventors: 谢宏浩; 张远; 张新飞; 高伟; 李飞龙; 郭芬; 詹健辉; 杨志峰
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-04-18
Anticipated expiration: 2032-09-09

Abstract

The utility model discloses an aquaculture tail water processing system, include water distribution canal, sedimentation tank, membrane aeration biological reaction pool and the ecological pond that purifies according to order series connection, the tail water discharge end of breeding the pool is connected to the water distribution canal, the discharge canal is connected to the ecological pond that purifies, membrane aeration biological reaction pool includes the rectangle pool body, the inner wall of the rectangle pool body covers geomembrane antiseep layer, the internal membrane module that sets up through the mount is fixed in the rectangle pool, the membrane module is perpendicular with the rivers direction. Compare in traditional processing system, the utility model discloses the required processing system area of final unit volume's breed tail water is little, and the energy consumption is low, the running cost is low promptly, and the opposite treatment effeciency is then higher.

Description

Aquaculture tail water treatment system

Technical Field

The utility model relates to an aquaculture tail water treatment technical field, in particular to aquaculture tail water processing system.

Background

At present, the preferred refined culture in the aquaculture field is high in efficiency and large in yield, but the high-investment and high-yield aquaculture mode causes the excrement, residual bait and the like of aquatic products to be rapidly accumulated, the ammonia nitrogen content of a water body is increased, and the water quality health of the aquaculture water body is seriously influenced. While unhealthy water quality can easily cause the reduction of the growth and reproduction rate of aquatic products, the quality safety is not guaranteed, diseases are bred, the economic benefit is reduced, and the healthy and sustainable development of the aquaculture industry is seriously hindered. In contrast, some culture ponds ensure that the culture ponds have good water quality by introducing natural running water such as rivers and discharging culture tail water. The mode depends on regions, rich natural running water resources are needed, and meanwhile, the direct discharge of the culture tail water influences the ecological environment. Aquaculture tail water has been reported to be one of the important sources of agricultural pollution that contribute to water environmental pollution. Moreover, since ten committees in the rural areas of agriculture and the like printed a plurality of opinions (No. 2019, 1) on accelerating the green development of aquaculture industry, local standards for discharging aquaculture tail water are developed in various places, and higher requirements are put forward on the quality of the aquaculture tail water.

In order to enable the culture tail water to reach relevant requirements before being discharged, the culture tail water needs to be subjected to relevant treatment before being discharged. In the culture tail water treatment system, the prior art has more extensive applications such as 'artificial wetland', 'three-pond two-dam' and the like. The traditional culture tail water treatment system has the problem of large occupied area and is not suitable for all culture places. Meanwhile, the traditional treatment system has high operation cost, and the main reaction is on electricity charge. Moreover, traditional processing system relies on water self ecosystem to handle the tail water, and treatment efficiency is not high. Obviously, based on the above problems, the conventional aquaculture tail water treatment system has failed to satisfy the development of aquaculture and the need for ecological protection. Therefore, the development of a treatment system which has small floor area and low operation cost and can effectively treat the aquaculture tail water is urgently needed.

Disclosure of Invention

The utility model mainly aims at providing an aquaculture tail water processing system, the area who aims at solving traditional aquaculture tail water processing system existence is big, the running cost is high, the not high technical problem of treatment efficiency.

In order to realize the above object, the utility model provides an aquaculture tail water processing system, include cloth ditch, sedimentation tank, membrane aeration biological reaction pond and the ecological pond of purifying of series connection in proper order, the tail water discharge end of breeding the pond is connected to the cloth ditch, the discharge canal is connected to the ecological pond of purifying, the membrane aeration biological reaction pond includes the rectangle pool body, the inner wall of the rectangle pool body covers geomembrane antiseep layer, the fixed aeration membrane subassembly that sets up through the mount in the rectangle pool body, the aeration membrane subassembly is perpendicular with the rivers direction.

Optionally, the aeration membrane assembly includes an air inlet pipe and an aeration membrane communicated with the air inlet pipe, the aeration membrane is composed of an inner membrane and an outer membrane which are formed by interfacial polymerization and have a composite membrane structure, the inner membrane is a polypropylene microporous membrane, the outer membrane is a polyurethane compact membrane, the left end and the right end of the aeration membrane are bonded and fixed, the upper end and the lower end of the inner membrane are communicated to form an air inlet channel, the upper part of the air inlet channel is communicated with the air inlet pipe, the lower end of the aeration membrane is sealed and fixed by a bottom rod, and the air inlet pipe is connected with the roots blower.

Optionally, a spring-like support is placed in the air inlet passage formed by the inner membrane.

Optionally, the surface of the aeration membrane is provided with a concave-convex fold structure.

Optionally, the intake pipe sets up a plurality of aeration membrane diaphragms, the aeration membrane diaphragm is arranged in proper order along the axial of intake pipe, the both sides of aeration membrane diaphragm are fixed each other through the net yarn.

Optionally, the intake pipe includes inlet end and central siphon end, the central siphon end is rotated with the inlet end through rotary joint and is connected, the central siphon end still passes through fixing base and support frame fixed connection, the fixing base passes through the bearing and rotates with the central siphon end to be connected, the central siphon end still includes rotary driving device, rotary driving device includes the rotating base who connects fixed connection with the central siphon end cover, and cup joint in the rotating base outside and with fixing base fixed connection's spacing shell, rotating base is for drawing pearl runner structure, rotary driving device still includes and draws the pearl chain that pearl runner structure matches, the bottom of spacing shell sets up the chain hole that supplies the pearl chain to run through.

Optionally, an air outlet hose connected with the bottom of the aeration membrane is arranged in the bottom rod, and the air outlet hose is provided with an adjusting valve.

Optionally, one end of the bottom rod is provided with a connecting ring, the bottom of the fixing frame on the same side as the connecting ring is provided with a fixed pulley, the end of the shaft pipe is provided with a hinge wheel, the hinge wheel corresponds to the fixed pulley, the connecting ring is fixedly connected with a flexible wire ring, and the flexible wire ring is in transmission connection with the hinge wheel and the fixed pulley.

Optionally, the connecting ring, the fixed pulley, the hinge wheel, the fixed pulley and the flexible wire loop are arranged into two groups, and each group is respectively provided with two sides of the corresponding bottom rod, the corresponding fixed frame and the corresponding shaft tube end.

Optionally, the top of the air inlet pipe is fixedly connected with a photovoltaic power generation board, the photovoltaic power generation board is electrically connected with a storage battery pack, and the storage battery pack is electrically connected with an external power supply and the Roots blower.

Optionally, the water distribution channel is communicated with the bottom of the sedimentation tank through an L-shaped elbow.

Optionally, the wall of the sedimentation tank is provided with water retaining walls, one ends of which are fixedly connected with the wall of the sedimentation tank, in a staggered manner along the water flow direction, and the water retaining walls form a zigzag water channel in the sedimentation tank.

Optionally, the ecological purification pond is covered with a geomembrane anti-leakage layer, a soil layer is laid on the geomembrane anti-leakage layer, and emergent aquatic plants and submerged plants are planted on the soil layer.

Optionally, the emergent aquatic plant is one or any combination of canna, iris, thalictrum ramosissimum and wild rice stem; the submerged plant is one or two of Foucaria, and Goldfish algae.

The utility model has the advantages that:

the embodiment of the utility model provides a through with aquaculture tail water through water distribution ditch water distribution, sedimentation tank separation solid particle thing, membrane aeration biological reaction pond carries out membrane aeration biological reaction, handles compounds such as organic matter, nitrogen and phosphorus in the tail water, carries out ecological purification through ecological purification pond to finally reach emission standard and discharge to outside river system or backward flow breed pond recycling. The embodiment of the utility model provides an in to aquaculture tail water treatment process, applied membrane aeration biological reaction, and the aeration mode of this reaction is bubble-free aeration, and the aeration is efficient, and is few to the waste of oxygen in the air, and then the air quantity of demand is low, compares in traditional processing system, and its final unit volume's required processing system area of breed tail water is little, and the energy consumption is low, the running cost is low promptly, and opposite treatment effeciency is then higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a first schematic block diagram of an aquaculture tail water treatment system of the present invention;

FIG. 2 is a second schematic block diagram of an aquaculture tail water treatment system of the present invention;

FIG. 3 is a schematic view of the structure of an aeration membrane module of the aquaculture tail water treatment system of the utility model;

FIG. 4 is a vertical cross-sectional view of an aeration membrane of the aquaculture tail water treatment system of the utility model;

FIG. 5 is a schematic view of a rotary driving device of an aquaculture tail water treatment system of the present invention;

FIG. 6 is a schematic view showing the parts of a rotary driving device of an aquaculture tail water treatment system.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

Referring to fig. 1 to 6, an embodiment of the present invention provides an aquaculture tail water treatment system, including a water distribution channel 01, a sedimentation tank 02, a membrane aeration biological reaction pond 03 and an ecological purification pond 04 connected in series in order, the tail water discharge end of the aquaculture pond a is connected to the water distribution channel 01, the ecological purification pond 04 is connected to a discharge channel 05, the membrane aeration biological reaction pond 03 includes a rectangular pond body 031, the inner wall of the rectangular pond body 031 covers a geomembrane anti-seepage layer 032, an aeration membrane module 06 is fixedly arranged in the rectangular pond body 031 through a fixing frame 033, and the aeration membrane module 06 is perpendicular to the water flow direction.

In this embodiment, the aquaculture tail water uniformly flows into the sedimentation tank through the water distribution channel, and the solid particles are deposited and separated in the sedimentation tank, the supernatant further flows into the membrane aeration biological reaction pond to perform the membrane aeration biological reaction, the organic matter, nitrogen and phosphorus in the supernatant are treated, and the tail water after the membrane aeration biological reaction flows into the ecological purification pond to be further purified through the ecological self-purification capacity of the ecological purification pond. The membrane aeration biological reaction (commonly called as MABR) is that a hollow fiber aeration membrane is used as a biofilm attachment carrier and carries out bubble-free aeration on microorganisms, and when tail water flows around the aeration membrane attached with the biofilm, pollutants such as organic matters, nitrogen, phosphorus and the like in a water body enter the biofilm under the actions of concentration difference driving, microorganism adsorption and the like, and are utilized by the microorganisms through the metabolism and propagation of the microorganisms, so that the effect of tail water purification is achieved. Because, the embodiment of the utility model provides an in to aquaculture tail water treatment process, applied membrane aeration biological reaction, and the aeration mode of this reaction is bubble-free aeration, and the efficient of aeration, and to the waste of oxygen in the air few, and then the air quantity of demand is low, compares in traditional processing system, and its final unit volume's required processing system area of breed tail water is little, the energy consumption is low, the running cost is low promptly, opposite treatment effeciency then is higher.

Specifically, in an embodiment, the aeration membrane module 06 includes an air inlet pipe 061 and an aeration membrane module 062 communicated with the air inlet pipe 061, the aeration membrane module 062 is composed of an inner membrane 063 and an outer membrane 064 which form a composite membrane structure through interfacial polymerization, the inner membrane 063 is a polypropylene microporous membrane, the outer membrane 064 is a polyurethane dense membrane, the left and right ends of the aeration membrane module 062 are bonded and fixed, the upper and lower ends of the inner membrane 063 are communicated to form an air inlet passage 065, the upper portion of the air inlet passage 065 is communicated with the air inlet pipe 061, the lower end of the aeration membrane 062 is sealed and fixed through a bottom rod 066, and the air inlet pipe 061 is connected with the roots blower 07. Air is conveyed into the air inlet pipe through the Roots blower, the air in the air inlet pipe enters the air inlet channel of the aeration membrane diaphragm, and the oxygen in the air is allowed to pass through the inner membrane, so that the oxygen in the air inlet channel passes through the inner membrane and the outer membrane and is absorbed and consumed by the microorganisms attached to the outer membrane for self metabolic propagation, and the microorganisms attached to the outer membrane simultaneously absorb and utilize pollutants such as organic matters, nitrogen, phosphorus and the like in tail water in the process. The aeration membrane can be ensured not to be easily blocked by microorganisms in the long-time aeration process through the design of the inner membrane and the outer membrane.

It is worth to explain that a plurality of aeration membrane assemblies can be arranged in the membrane aeration biological reaction pond, the aeration membrane assemblies are connected with the Roots blower in parallel through air inlet pipes, the air inlet pipe of each aeration membrane assembly is provided with an independent air inlet valve for control, and the number of the aeration membrane assemblies entering the working state can be increased or reduced by controlling the air inlet valves according to different concentrations of pollutants such as organic matters, nitrogen, phosphorus and the like in the culture tail water.

In one embodiment, a spring-like support 086 is placed in an air inlet passage 065 formed by the inner membrane 063, the spring-like support 086 being made of a flexible ABS plastic. The structural stability of the aeration membrane can be ensured through the spring-shaped support, and the problems of over-high air pressure in the membrane and the like caused by unsmooth ventilation due to local distortion are prevented.

In one embodiment, the surface of the membrane of the aeration membrane is provided with a concave-convex corrugated structure 067. The concave-convex fold structure arranged on the outer surface of the outer membrane can effectively promote the attachment and fixation of microbial communities, so that a stable biological membrane is quickly formed, and the treatment efficiency of the aeration biological reaction pond is quickly improved.

In one embodiment, the air inlet pipe 061 is provided with a plurality of aeration membrane sheets 062, the aeration membrane sheets 062 are sequentially arranged in an axial direction of the air inlet pipe, and two sides of the aeration membrane sheets 062 are fixed to each other through grid yarns 068. The aeration membrane is connected into a whole through the grid yarns, so that the treatment area of the aeration membrane is ensured, the flow of tail water is not influenced, and the influence of the buoyancy of a water body on the membrane component can be reduced.

In an embodiment, the air inlet pipe 061 includes an air inlet end 069 and a shaft pipe end 070, the shaft pipe end 070 is rotatably connected with the air inlet end 069 through a rotary joint 071, the shaft pipe end 070 is further fixedly connected with a fixing frame 033 through a fixing seat 072, the fixing seat 072 is rotatably connected with the shaft pipe end 070 through a bearing 073, the shaft pipe end 070 further includes a rotary driving device 08, the rotary driving device 08 includes a rotary base 081 fixedly connected with the shaft pipe end 070 in a sleeved manner, and a limiting shell 082 sleeved outside the rotary base 081 and fixedly connected with the fixing seat 072, the rotary base 081 is in a structure of a ball pulling runner, the rotary driving device 08 further includes a ball chain 083 matched with the ball pulling runner structure, and a chain hole 084 for the ball chain 083 to penetrate through is formed in the bottom of the limiting shell 082. The rotary driving device drives the end of the shaft pipe to rotate relative to the air inlet end, and the rotation of the end of the shaft pipe drives the aeration membrane film to be wound on the end of the shaft pipe, so that the aeration membrane film is separated from the culture tail water; or when the membrane component is damaged and needs to be replaced, the membrane component can be locally replaced under the condition that the membrane aeration biological reaction pond is not drained. When the membrane needs to be re-distributed, the bead chains are pulled reversely, so that the aeration membrane can be re-unfolded and descend into the tail water. The structure is convenient to operate and install and transport.

In one embodiment, an air outlet hose 074 connected to the bottom of aeration membrane piece 062 is disposed in bottom rod 066, and regulating valve 075 is disposed in air outlet hose 074. The aeration mode of the aeration membrane can be switched as required by the air outlet hose and the regulating valve, when the concentration of pollutants such as organic matters, nitrogen, phosphorus and the like in the aquaculture tail water is high, the regulating valve is opened to increase the air inflow of the air inlet channel in the aeration membrane and increase the supply of oxygen, and the aeration mode of the aeration membrane is through aeration; otherwise, the regulating valve is closed, and the aeration mode of the aeration membrane is changed into closed aeration, so that the energy consumption of the fan is reduced.

In an embodiment, one end of the bottom rod 066 is provided with a connecting ring 076, the bottom of the fixing frame 033 on the same side as the connecting ring 076 is provided with a fixed pulley 077, the shaft tube end 070 is provided with a hinge wheel 078, the hinge wheel 078 corresponds to the fixed pulley 077, the connecting ring 076 is fixedly connected with a flexible wire ring 079, and the flexible wire ring 079 is in transmission connection with the hinge wheel 078 and the fixed pulley 077. Through the fixed relation of flexible wire loop and go-between, can fix the aeration membrane diaphragm all the time in the same vertical plane with the mount, prevent that the aeration membrane diaphragm from floating out of the water surface and the condition emergence that floats at will in the tail water because the aeration volume is big. Meanwhile, the up-and-down movement of the aeration membrane film which is always in a vertical plane when the shaft tube end rotates can be limited through the hinge wheel and the fixed pulley.

Preferably, in another embodiment, the connecting ring 076, the fixed pulley 077, the hinge wheel 078, the fixed pulley 077 and the flexible wire loop 079 are provided in two sets, and each set is respectively provided at two sides of the corresponding bottom rod 066, the fixing bracket 033 and the shaft tube end 070. Through the arrangement of the two groups of devices, the two ends of the bottom rod can work simultaneously, and the lifting operation of the aeration membrane diaphragm can be completed more smoothly.

In one embodiment, the top of the air inlet pipe 061 is fixedly connected to a photovoltaic panel 085, the photovoltaic panel 085 is electrically connected to a storage battery (not shown), and the storage battery is electrically connected to an external power source and the roots blower 07. The photovoltaic power generation board can effectively utilize the regional solar energy in membrane aeration biological reaction pond, realizes the supply of partial electric energy, and when the electric energy that photovoltaic power generation board produced was not enough, external power source can supply. The structure can further reduce the energy consumption of the aquaculture tail water treatment system, and finally realize the energy-saving, low-carbon and high-efficiency operation of the tail water treatment system.

In one embodiment, the water distribution channel 01 is communicated with the bottom of the sedimentation tank 02 through an L-shaped elbow 011. The L-shaped bent pipe can directly convey the culture tail water flowing through the water distribution channel to the bottom of the sedimentation tank, and therefore fluctuation of water flow on the surface of the sedimentation tank is reduced.

In one embodiment, the wall of the sedimentation tank 02 is provided with water-retaining walls 021, one ends of which are fixedly connected with the wall, in a staggered manner along the water flow direction, and the water-retaining walls 021 form a zigzag water channel in the sedimentation tank 02. Set up the route of flowing through that a plurality of waterwalls can prolong the tail water of breeding in the sedimentation tank, further reduce the velocity of flow of tail water, promote the subsidence of solid particulate matter in the tail water, reduce the area of sedimentation tank.

In one embodiment, the ecological purification pond 04 is covered with a geomembrane anti-seepage layer 032, a soil layer 041 is laid on the geomembrane anti-seepage layer 032, and emergent aquatic plants 042 and submerged plants 043 are planted on the soil layer 041. Further absorbing pollutants in the tail water through the growth of emergent aquatic plants and submerged plants in the ecological purification pond so as to reach the discharge standard. The geomembrane anti-leakage layer of the ecological purification pond is mainly used for preventing secondary pollution of the raw soil of the pond body to tail water, and can be adjusted according to the soil quality condition of the area where the culture pond is located in the actual application process, and the geomembrane anti-leakage layer does not need to be laid if the soil quality of the area is excellent.

Specifically, the emergent aquatic plant 042 is one or any combination of canna, iris, thalictrum ramosissimum and wild rice stem; the submerged plant 043 is one or two of Foliumet tailer and Goldfish algae. The ecological purification is carried out through the ecological purification pond, and finally the sewage reaches the discharge standard and is discharged to an external water system B or a backflow culture pond A for recycling.

The above mentioned embodiments are only optional embodiments of the present invention, and not to limit the scope of the present invention, and all the equivalent structural changes made by the contents of the specification and drawings of the present invention or the direct/indirect application in other related technical fields are included in the scope of the present invention.

Claims

1. The aquaculture tail water treatment system is characterized by comprising a water distribution channel, a sedimentation tank, a membrane aeration biological reaction pond and an ecological purification pond which are sequentially connected in series, wherein the water distribution channel is connected with the tail water discharge end of the aquaculture pond, the ecological purification pond is connected with a discharge channel, the membrane aeration biological reaction pond comprises a rectangular pond body, the inner wall of the rectangular pond body is covered with a geomembrane anti-leakage layer, an aeration membrane component is fixedly arranged in the rectangular pond body through a fixing frame, and the aeration membrane component is perpendicular to the water flow direction.

2. The aquaculture tail water treatment system of claim 1, wherein the aeration membrane assembly comprises an air inlet pipe and an aeration membrane piece communicated with the air inlet pipe, the aeration membrane piece is composed of an inner membrane and an outer membrane which form a composite membrane structure through interfacial polymerization, the inner membrane is a polypropylene microporous membrane, the outer membrane is a polyurethane compact membrane, the left end and the right end of the aeration membrane piece are fixedly bonded, the upper end and the lower end of the inner membrane are communicated to form an air inlet channel, the upper part of the air inlet channel is communicated with the air inlet pipe, the lower end of the aeration membrane piece is fixedly sealed through a bottom rod, and the air inlet pipe is connected with the Roots blower.

3. The aquaculture tail water treatment system of claim 2 wherein spring-like supports are disposed within the air intake passage formed by the inner membrane.

4. The aquaculture tail water treatment system of claim 2 wherein the surface of said aeration membrane diaphragm is provided with a corrugated and embossed structure.

5. The aquaculture tail water treatment system of claim 2, wherein the air inlet pipe is provided with a plurality of aeration membrane membranes, the aeration membrane membranes are sequentially arranged along the axial direction of the air inlet pipe, and two sides of the aeration membrane membranes are fixed with each other through grid yarns.

6. The aquaculture tail water treatment system of claim 2 wherein the top of the inlet pipe is fixedly connected with a photovoltaic panel, the photovoltaic panel is electrically connected with a storage battery pack, and the storage battery pack is electrically connected with an external power supply and the Roots blower.

7. The aquaculture tail water treatment system of claim 1 wherein said distribution channel communicates with the bottom of the settling tank through an L-bend.

8. The aquaculture tail water treatment system of claim 7 wherein the walls of said settling tank are staggered in the direction of water flow with a dam having one end fixedly attached to the wall, said dam forming a zigzag channel in the settling tank.

9. The aquaculture tail water treatment system of claim 1, wherein the ecological purification pond is internally covered with a geomembrane anti-leakage layer, a soil layer is laid on the geomembrane anti-leakage layer, and emergent aquatic plants and submerged plants are planted on the soil layer.

10. The aquaculture tail water treatment system of claim 9, wherein the emergent aquatic plant is one or any combination of canna, iris, thaliana, and zizania aquatica; the submerged plant is one or two of Foliumet tailer and Goldfish algae.