CN109730025B - Litopenaeus vannamei greenhouse intensive culture tail water treatment device - Google Patents
Litopenaeus vannamei greenhouse intensive culture tail water treatment device Download PDFInfo
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- CN109730025B CN109730025B CN201910074426.4A CN201910074426A CN109730025B CN 109730025 B CN109730025 B CN 109730025B CN 201910074426 A CN201910074426 A CN 201910074426A CN 109730025 B CN109730025 B CN 109730025B
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Abstract
The invention discloses a device for treating tail water of greenhouse intensive culture of litopenaeus vannamei, and aims to provide a device for treating tail water of greenhouse intensive culture of litopenaeus vannamei, which not only can ensure that the culture tail water reaches the standard and is discharged, but also can provide reference for other culture enterprises, and has controllable operation cost. It comprises a culture pond; the tail water of the culture pond is drained into the water collecting channel from the head end of the water collecting channel; the sedimentation treatment tank is connected with the tail end of the water collecting channel through a first water lifting pipe, and a first water pump is arranged on the first water lifting pipe; the aeration treatment tank is connected with the sedimentation treatment tank through a second water lifting pipe, and a second water pump is arranged on the second water lifting pipe; the microbial adsorption treatment tank is connected with the aeration treatment tank through a first overflow pipe; and the biological wetland treatment tank is connected with the microorganism adsorption treatment tank through a second overflow pipe.
Description
Technical Field
The invention relates to a tail water treatment device, in particular to a tail water treatment device for greenhouse intensive breeding of litopenaeus vannamei.
Background
The litopenaeus vannamei (Penaeus vannamei), also known as Penaeus vannamei, is naturally distributed on the Pacific coast from Peru to Mexico, and is one of the three shrimps with the highest cultivation yield in the world at present. Since 1988, since the introduction of the oceanographic research institute of Chinese academy of sciences, with the successful breakthrough of techniques such as fry breeding, breeding mode, nutrition bait, disease prevention and control and the like, the culture of litopenaeus vannamei is rapidly developed from provinces such as southern Hainan, Guangdong, Guangxi and Fujian in China to provinces such as Zhejiang and Jiangsu in the east and Shandong, Hebei and Liaoning in the northern area. The litopenaeus vannamei has become the most important breed of shrimps in China, the annual output reaches 150-160 ten thousand and the output value exceeds 300 million yuan. Zhejiang province is located in the middle of the coastline of China, sea fresh water resources are rich, the method is also a main Litopenaeus vannamei breeding area of China, the breeding area of the Zhejiang province in 2016 is 8954 hectares, and the breeding yield is 34139 tons. Relevant studies have shown that the main waste products generated during the cultivation process are residual baits, excretions, chemical substances and therapeutic drug residues, the dead bodies and pathogens of the cultivated organisms are also part of the waste products, but the main source of potential pollutants is bait-related waste products. The bait waste has both dissolved and solid suspended particles. When 1t of shrimps are produced, 0.2t of N element and 0.05t of P element are added in the water body, if the culture tail water cannot be effectively treated in time, the culture water environment is deteriorated, abnormal propagation of algae and the like can be caused, red tide frequently occurs, and the serious marine environment pollution problem is caused.
In recent years, scholars at home and abroad have made a lot of relevant researches on tail water treatment of aquaculture, but few researches on tail water treatment design examples of intensive aquaculture of seawater litopenaeus vannamei. Therefore, a scientific and reasonable culture tail water treatment method is established, the culture tail water can be discharged after reaching the standard, references can be provided for other culture enterprises, and the operation cost is controllable, so that the method becomes a problem to be solved urgently, and has important significance for protecting the aquaculture ecological environment and promoting the sustainable development of aquaculture.
Disclosure of Invention
The invention aims to provide a litopenaeus vannamei greenhouse intensive culture tail water treatment device, which can not only ensure that culture tail water reaches the standard and is discharged, but also provide reference for other culture enterprises, has controllable operation cost, and has important significance for protecting the ecological environment of aquaculture and promoting the sustainable development of aquaculture.
The technical scheme of the invention is as follows:
the utility model provides a tail water treatment facilities is bred in litopenaeus vannamei big-arch shelter intensification, includes: a culture pond; the intertidal zone organisms are distributed in the water collecting channel, and the culture tail water in the culture pond is discharged into the water collecting channel from the head end of the water collecting channel; the sedimentation treatment tank is connected with the tail end of the water collecting channel through a first water lifting pipe, and a first water pump is arranged on the first water lifting pipe; the aeration treatment tank is connected with the sedimentation treatment tank through a second water lifting pipe, and a second water pump is arranged on the second water lifting pipe; the microbial adsorption treatment tank is connected with the aeration treatment tank through a first overflow pipe; and the biological wetland treatment tank is connected with the microorganism adsorption treatment tank through a second overflow pipe.
The tail water treatment facilities is bred in the intensification of litopenaeus vannamei big-arch shelter of this scheme can make and breed tail water discharge to reach standard, can provide the reference for other breed enterprises again, and the running cost is controllable simultaneously, has important meaning to protection aquaculture ecological environment and promotion aquaculture sustainable development.
Preferably, a plurality of steel cables distributed side by side are arranged above the water surface of the microorganism adsorption treatment tank, a plurality of biological elastic fillers are hung on the steel cables, and the lower parts of the biological elastic fillers are immersed in the water of the microorganism adsorption treatment tank.
Preferably, the distance between the lower end of the biological elastic filler and the bottom surface of the microorganism adsorption treatment tank is more than 1 meter.
Preferably, a plurality of cement brick partition walls are arranged in the microorganism adsorption treatment tank so as to form a zigzag flow channel in the microorganism adsorption treatment tank.
Preferably, a plurality of tank bottom aeration pipes are arranged on the bottom surface of the aeration treatment tank, and a plurality of tank bottom aeration heads are arranged on the tank bottom aeration pipes.
Preferably, the end of the water collecting channel is also provided with a gate.
Preferably, the sewage treatment system further comprises a sewage pretreatment tank and a sectional type sewage device, wherein the water level of the culture tank is higher than that of the sewage pretreatment tank, the sewage pretreatment tank is connected with the head end of the water collecting channel through a third water lifting pipe, a third water pump is arranged on the third water lifting pipe, the sectional type sewage device comprises a pre-sewage pipe, a main sewage pipe, a pre-sewage valve arranged on the pre-sewage pipe and a main sewage valve arranged on the main sewage pipe, the pre-sewage pipe comprises a first pre-sewage pipe arranged in the middle of the bottom surface of the culture tank, a second pre-sewage pipe arranged on the bottom surface of the sewage pretreatment tank and a first connecting pipe for connecting the lower end of the first pre-sewage pipe with the lower end of the second pre-sewage pipe, and the upper end of the first pre-sewage pipe is flush with or lower than the bottom surface of the culture tank where the first pre-sewage pipe is located; the main sewage discharge pipe comprises a first main sewage discharge pipe arranged in the middle of the bottom surface of the culture pond, a second main sewage discharge pipe arranged on the bottom surface of the water collecting channel and a second connecting pipe for connecting the lower end of the first main sewage discharge pipe with the lower end of the second main sewage discharge pipe, the upper end of the first main sewage discharge pipe is higher than the upper end of the first pre-sewage discharge pipe, and the second main sewage discharge pipe is close to the head end of the water collecting channel.
The inventor discovers that because organic matters such as a large amount of residual baits, excrement, algae and the like can be accumulated at the bottom of the pool of the culture pond, the culture tail water at the bottom of the pool of the culture pond is obviously black and smelly, the pollution degree is obviously higher than that of the culture tail water at other parts of the culture pond, the culture tail water at other parts of the pool bottom of the culture pond is directly mixed and discharged, the pollution degree of the culture tail water is greatly increased, the purification effect of the culture tail water treatment device on the culture tail water is influenced, and the treatment efficiency of the culture tail water is reduced. In order to solve the problem, in the sectional type sewage discharging device, the upper end of the first pre-sewage discharging pipe is flush with or lower than the bottom surface of a culture pond where the first pre-sewage discharging pipe is located, and the upper end of the first main sewage discharging pipe is higher than the upper end of the first pre-sewage discharging pipe, so that the pre-sewage discharging valve can be opened firstly during sewage discharging, a large amount of organic matters such as residual baits, excreta and algae accumulated at the bottom of the culture pond are discharged into the sewage discharging pretreatment pond through the pre-sewage discharging pipe and pretreated through the sewage discharging pretreatment pond, and the pre-sewage discharging valve is closed when tail water discharged by the pre-sewage discharging pipe is basically consistent with water in the culture pond; then, opening a main sewage discharge valve to discharge the culture tail water of the culture pond into a water collecting channel through a main sewage discharge pipe, and purifying the culture tail water together with other culture tail water; after the breeding tail water in the pollution discharge pretreatment pool is pretreated, a third water pump is started, the breeding tail water in the pollution discharge pretreatment pool is pumped into the water collecting channel through a third water lifting pipe, and the breeding tail water and other breeding tail water are purified; therefore, the culture tail water with different pollution degrees is discharged in a segmented mode and treated in a centralized mode, and the purification effect and the treatment efficiency of the culture tail water are improved.
Preferably, the device also comprises a pre-sewage-discharging auxiliary device, the pre-sewage-discharging auxiliary device comprises a spiral track extending from the middle part of the bottom surface of the culture pond to the edge of the bottom surface of the culture pond, a sliding block sliding along a spiral pipeline, a support arranged on the sliding block, a shaft rod rotatably arranged on the support, a supporting roller arranged on the shaft rod, a rolling brush barrel coaxially arranged on the shaft rod and a waterproof motor arranged on the support and used for driving the shaft rod to rotate, the spiral track consists of the spiral pipeline, the spiral pipeline is laid on the bottom surface of the culture pond, the sliding block can rotate around the spiral pipeline, the axis of the shaft rod is vertical to the sliding direction of the sliding block, the two supporting rollers are symmetrically distributed on two sides of the sliding block, the supporting rollers are supported on the bottom surface of the culture pond, the two rolling brush barrels are also symmetrically distributed on two sides of the sliding block, the rolling brush cylinder comprises a plurality of brush hairs, and the brush hairs are propped against the bottom surface of the culture pond.
The pre-sewage discharge auxiliary device of the scheme drives the supporting roller and the rolling brush cylinder to rotate together through the shaft rod when the pre-sewage discharge valve is opened, so that the supporting roller is supported on the bottom surface of the culture pond, the sliding block is driven to slide along the spiral pipeline, meanwhile, the rolling brush cylinder stirs a large amount of residual baits, excretions, algae and other organic matters deposited on the bottom surface of the culture pond, thus after the pre-sewage discharge valve is opened, the pre-sewage discharge auxiliary device can ensure that a large amount of residual baits, excretions, algae and other organic matters accumulated at the bottom of the culture pond can be discharged into the sewage discharge pretreatment pond through the pre-sewage discharge pipe, and avoids the situation that a large amount of residual baits, excretions, algae and other organic matters accumulated at the bottom of the culture pond can not be discharged into the sewage discharge pond through the pre-sewage discharge pipe in the opening process of the pre-sewage discharge valve, so as to ensure thorough sewage discharge pretreatment of tail water of the culture pond and avoid, organic matters such as residual baits, excrement, algae and the like at the bottom of the pool which are not discharged through the pre-drainage pipe are discharged into the water collecting channel through the main drainage pipe, so that the purification effect of the culture tail water is influenced, and the treatment efficiency of the culture tail water is reduced.
Preferably, the biological wetland treatment tank is a muddy bottom pond, the side surfaces of the biological wetland treatment tank are surrounded by four side surfaces, three side surfaces are cement slopes, the other side surface is a backer surface, large-scale emergent aquatic organisms are distributed on one side of the backer surface, and intertidal zone organisms on one side of the cement slope surface.
Preferably, the end of the water collecting channel is also provided with a gate.
The invention has the beneficial effects that: the method not only can ensure that the culture tail water is discharged after reaching the standard, but also can provide reference for other culture enterprises, and has controllable operation cost, thereby having important significance for protecting the ecological environment of aquaculture and promoting the sustainable development of aquaculture.
Drawings
Fig. 1 is a top view of a tail water treatment device for greenhouse intensive cultivation of litopenaeus vannamei according to a specific embodiment of the present invention.
Fig. 2 is a schematic view of a partial cross-sectional structure of an aeration treatment tank and a microorganism adsorption treatment tank of a tail water treatment device for greenhouse intensive cultivation of litopenaeus vannamei according to an embodiment of the present invention.
Fig. 3 is a top view of a tail water treatment device for greenhouse intensive cultivation of litopenaeus vannamei according to a second embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view taken along line a-a in fig. 3.
Fig. 5 is a schematic cross-sectional view at B-B in fig. 3.
Fig. 6 is a top view of a culture pond of the tail water treatment device for greenhouse intensive culture of litopenaeus vannamei according to the third embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a pre-sewage discharge auxiliary device of a tail water treatment device for greenhouse intensive cultivation of litopenaeus vannamei according to a third embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a rolling brush drum according to a third embodiment of the present invention.
In the figure:
a culture pond 1;
a water collecting channel 2;
a sedimentation treatment tank 3, a first water extraction pipe 3.1;
an aeration treatment tank 4 and a second water extraction pipe 4.1;
a microorganism adsorption treatment tank 5, a first overflow pipe 5.1, a steel cable 5.2 and a biological elastic filler 5.3;
a biological wetland treatment tank 6 and a second overflow pipe 6.1;
a sewage disposal pretreatment tank 7 and a third water extraction pipe 7.1;
the sewage treatment system comprises a sectional type sewage discharging device 8, a pre-sewage discharging pipe 8.1, a first pre-sewage discharging pipe 8.11, a first connecting pipe 8.12, a second pre-sewage discharging pipe 8.13, a main sewage discharging pipe 8.2, a first main sewage discharging pipe 8.21, a second connecting pipe 8.22, a second main sewage discharging pipe 8.23, a pre-sewage discharging valve 8.3 and a main sewage discharging valve 8.4;
the device comprises a pre-sewage-discharge auxiliary device 9, a spiral track 9.1, a sliding block 9.2, a support 9.3, a shaft rod 9.4, a supporting roller 9.5, a rolling brush cylinder 9.6, a waterproof motor 9.7 and a gear transmission mechanism 9.8.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections, either mechanical or electrical, or communicating with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in figure 1, the tail water treatment device for the greenhouse intensive culture of the litopenaeus vannamei comprises a culture pond 1, a water collecting channel 2, a sedimentation treatment pond 3, an aeration treatment pond 4, a microorganism adsorption treatment pond 5 and a biological wetland treatment pond 6.
The cultivation tail water in the cultivation pond 1 is discharged into the water collecting channel 2 from the head end of the water collecting channel 2, for example, the cultivation tail water in the cultivation pond is discharged into the water collecting channel from the head end of the water collecting channel by a water pump, or the cultivation tail water in the cultivation pond is discharged into the water collecting channel from the head end of the water collecting channel by means of water level difference (the water level of the cultivation pond is higher than the water level of the water collecting channel). In this embodiment, the water collecting channel is a muddy channel with a length of 600m and a width of 5 m. Intertidal organisms distributed in the catchment canals, such as reeds, mudskipper, tidal crabs, perinereis aibuhitensis, clams, oysters and the like. The tail end of the water collecting channel is also provided with a gate to prevent the culture tail water from directly discharging into the sea.
The sedimentation treatment tank 3 is connected with the tail end of the water collecting channel 2 through a first water lifting pipe 3.1, and a first water pump is arranged on the first water lifting pipe. In this embodiment, the sedimentation treatment tank is a square cement tank with an area of 4 mu and an effective water depth of 1.8 m. The culture tail water in the water collecting channel is pumped into a precipitation treatment pool through a first water pump and a first water lifting pipe to carry out precipitation treatment.
The bottom surface of the aeration treatment tank 4 is provided with a plurality of tank bottom aeration pipes, and the tank bottom aeration pipes are provided with a plurality of tank bottom aeration heads. The aeration treatment tank 4 is connected with the sedimentation treatment tank 3 through a second water lifting pipe 4.1, and a second water pump is arranged on the second water lifting pipe. In this embodiment, the aeration treatment tank is a square cement tank with an area of 5 mu and an effective water depth of 1.8 m. And pumping the culture tail water in the sedimentation treatment tank into an aeration treatment tank through a second water pump and a second water lifting pipe for aeration treatment.
As shown in FIG. 1 and FIG. 2, the microorganism adsorption treatment tank 5 is connected to the aeration treatment tank 4 through a first overflow pipe 5.1. The first overflow pipe is horizontally arranged. When the water level in the aeration treatment tank is higher than the first overflow pipe, the water in the aeration treatment tank flows into the microorganism adsorption treatment tank through the first overflow pipe.
In this embodiment, the microbial adsorption treatment tank is a rectangular cement tank with an area of 6 mu and an effective water depth of 1.8 m. A plurality of steel cables 5.2 which are distributed side by side are arranged above the water surface of the microorganism adsorption treatment tank, and the distance between the steel cables and the water surface of the microorganism adsorption treatment tank is 0.2-0.4 m. The distance between two adjacent steel cables is 0.3-0.5 m. A plurality of biological elastic fillers 5.3 are hung on the steel cable, and the lower parts of the biological elastic fillers are immersed in the water in the microorganism adsorption treatment tank. On the same steel cord: the biological elastic fillers are distributed at equal intervals, and the distance between every two adjacent biological elastic fillers is 0.3 m. The length of the biological elastic filler is 0.6-1 meter. The distance between the lower end of the biological elastic filler and the bottom surface of the microbial adsorption treatment tank is more than 1 meter.
In the treatment process of the chemical breeding tail water, 10L of EM bacteria with the quantity of more than 1 hundred million CFU/mL are splashed every day in the microbial adsorption treatment tank.
Furthermore, a plurality of cement brick partition walls are arranged in the microbial adsorption treatment tank to form a zigzag flow channel in the microbial adsorption treatment tank, so that the water flow time in the microbial adsorption treatment tank is prolonged.
The biological wetland treatment tank 6 is connected with the microorganism adsorption treatment tank 5 through a second overflow pipe 6.1. The second overflow pipe is horizontally arranged. In this embodiment, the biological wetland treatment tank is a muddy bottom pond, the side surfaces of the biological wetland treatment tank are surrounded by four side surfaces, three of the side surfaces are cement slopes, and the other side surface is a mountain surface. Large-scale emergent aquatic organisms such as seawater reeds and the like are distributed on one side of the mountain leaning surface; intertidal zone organisms on one side of a cement slope, such as Cyclina, Young clupanodon punctatus, croodon carnodon punctatus, etc. And the top of the side surface of the biological wetland treatment tank is also provided with a discharge overflow port.
When the water level in the microorganism adsorption treatment tank is higher than that of the second overflow pipe, the water in the microorganism adsorption treatment tank flows into the biological wetland treatment tank through the first overflow pipe.
Collecting 1000t of tail water of the intensive culture of the south America white prawns every day, precipitating for 20 hours in a precipitation treatment tank through a 600m water collecting channel, then entering an aeration treatment tank, a microbial adsorption treatment tank and a biological wetland treatment tank, and enabling the water quality index of the tail water to reach the discharge standard, wherein the PH value is increased to 8.0; the suspended matter is reduced to 14mg/L, and the purification rate is 98.9%; the ammonia nitrogen is reduced to 0.312mg/L, and the purification rate is 92.3 percent; the nitrite nitrogen is 0.114mg/L, and the purification rate is 66.7%; the nitric acid nitrogen is 0.047mg/L, and the purification rate is 98.3%; inorganic nitrogen 0.73mg/L, purification rate 93.5%; the phosphate content is 0.114mg/L, and the purification rate is 94.8%. The method can effectively remove pollutants in the tail water of the intensive aquaculture of the south America white prawns, the discharged tail water can reach the discharge industrial standard of the tail water of the seawater pond aquaculture, and the method has the characteristics of small investment, strong operability and remarkable treatment effect, so that the method can provide reference for other aquaculture enterprises, is controllable in operation cost, and has important significance for protecting the ecological environment of aquaculture and promoting the sustainable development of aquaculture.
In a second embodiment, the remaining structure of the present embodiment refers to the first embodiment, and the difference therebetween is that:
as shown in fig. 3, 4 and 5, the tail water treatment device for greenhouse intensive cultivation of litopenaeus vannamei further comprises a sewage pretreatment tank 7 and a sectional type sewage discharge device 8. The water level of the culture pond is higher than that of the sewage disposal pretreatment pond. The bottom surface of the sewage disposal pretreatment tank is provided with a plurality of pretreatment tank aeration pipes which are communicated with each other, and the pretreatment tank aeration pipes are provided with a plurality of pretreatment tank aeration heads. The sewage disposal pretreatment tank is connected with the head end of the water collecting channel through a third water lifting pipe 7.1, and a third water pump is arranged on the third water lifting pipe.
The sectional type sewage discharging device 8 comprises a pre-sewage discharging pipe 8.1, a main sewage discharging pipe 8.2, a pre-sewage discharging valve 8.3 arranged on the pre-sewage discharging pipe and a main sewage discharging valve 8.4 arranged on the main sewage discharging pipe.
The pre-drainage pipe 8.1 comprises a first pre-drainage pipe 8.11 arranged in the middle of the bottom surface of the culture pond, a second pre-drainage pipe 8.13 arranged on the bottom surface of the sewage pre-treatment pond, and a first connecting pipe 8.12 connecting the lower end of the first pre-drainage pipe and the lower end of the second pre-drainage pipe. The first pre-drainage pipe is vertically arranged. The second pre-drainage pipe is vertically arranged. The upper port of the first pre-drainage pipe is communicated with the culture pond. The second pre-drainage pipe is communicated with the drainage pretreatment tank. The upper end of the first pre-drainage pipe is flush with the bottom surface of the culture pond where the first pre-drainage pipe is located or lower than the bottom surface of the culture pond where the first pre-drainage pipe is located.
The main sewage discharge pipe 8.2 comprises a first main sewage discharge pipe 8.21 arranged in the middle of the bottom surface of the culture pond, a second main sewage discharge pipe 8.23 arranged on the bottom surface of the water collecting channel and a second connecting pipe 8.22 connecting the lower end of the first main sewage discharge pipe and the lower end of the second main sewage discharge pipe. The first main sewage discharge pipe is vertically arranged. The second main sewage discharge pipe is vertically arranged. The upper port of the first main sewage discharge pipe is communicated with the culture pond. The upper port of the second main sewage discharge pipe is communicated with the water collecting channel, and the second main sewage discharge pipe is close to the head end of the water collecting channel. The upper end of the first main sewage discharge pipe is higher than the upper end of the first pre-sewage discharge pipe, and in the embodiment, the height difference between the upper end of the first main sewage discharge pipe and the upper end of the first pre-sewage discharge pipe is 30-50 cm.
In this embodiment, the culture pond is circular. The bottom surface edge of breeding the pond is down-sloping toward the bottom surface middle part of breeding the pond, and specifically, the bottom surface of breeding the pond is the toper. Therefore, a large amount of organic matters such as residual baits, excretions and algae at the bottom of the culture pond are gathered towards the first pre-drainage pipe at the middle part, and the organic matters such as residual baits, excretions and algae gathered at the bottom of the culture pond are drained into the sewage pre-treatment pond through the pre-drainage pipe.
The inventor discovers that because organic matters such as a large amount of residual baits, excrement, algae and the like can be accumulated at the bottom of the pool of the culture pond, the culture tail water at the bottom of the pool of the culture pond is obviously black and smelly, the pollution degree is obviously higher than that of the culture tail water at other parts of the culture pond, the culture tail water at other parts of the pool bottom of the culture pond is directly mixed and discharged, the pollution degree of the culture tail water is greatly increased, the purification effect of the culture tail water treatment device on the culture tail water is influenced, and the treatment efficiency of the culture tail water is reduced. In order to solve the problem, in the sectional type sewage draining device in the embodiment, because the upper end of the first pre-sewage draining pipe is flush with or lower than the bottom surface of the culture pond where the first pre-sewage draining pipe is located, and the upper end of the first main sewage draining pipe is higher than the upper end of the first pre-sewage draining pipe, during sewage draining, the pre-sewage draining valve can be opened firstly, so that a large amount of organic matters such as residual baits, excreta and algae accumulated at the bottom of the culture pond are drained into the sewage draining pretreatment pond through the pre-sewage draining pipe, and are pretreated through the sewage draining pretreatment pond, and when tail water drained by the pre-sewage draining pipe is basically consistent with water in the culture pond, the pre-sewage draining valve is closed; then, opening a main sewage discharge valve to discharge the culture tail water of the culture pond into a water collecting channel through a main sewage discharge pipe, and purifying the culture tail water together with other culture tail water; after the breeding tail water in the pollution discharge pretreatment pool is pretreated, a third water pump is started, the breeding tail water in the pollution discharge pretreatment pool is pumped into the water collecting channel through a third water lifting pipe, and the breeding tail water and other breeding tail water are purified; therefore, the culture tail water with different pollution degrees is discharged in a segmented mode and treated in a centralized mode, and the purification effect and the treatment efficiency of the culture tail water are improved.
In a third embodiment, the remaining structure of the present embodiment refers to the second embodiment, and the difference therebetween is that:
as shown in fig. 6, 7 and 8, the tail water treatment device for the greenhouse intensive culture of litopenaeus vannamei further comprises an auxiliary pre-pollution discharge device 9. The auxiliary device for pre-sewage discharge comprises a spiral track 9.1 extending from the middle part of the bottom surface of the culture pond to the edge of the bottom surface of the culture pond, a sliding block 9.2 sliding along a spiral pipeline, a support 9.3 arranged on the sliding block, a shaft rod 9.4 arranged on the support in a rotating way, a supporting roller 9.5 arranged on the shaft rod, a rolling brush barrel 9.6 coaxially arranged on the shaft rod and a waterproof motor 9.7 arranged on the support and used for driving the shaft rod to rotate. The output shaft of the waterproof motor is parallel to the shaft rod, and the output shaft of the waterproof motor is connected with the shaft rod through a gear transmission mechanism 9.8.
And limit stops are arranged at the inner end and the outer end of the spiral track. The helical track is composed of helical pipes. The spiral pipeline is laid on the bottom surface of the culture pond. The slider can rotate around the spiral pipe. The axis of axostylus axostyle is mutually perpendicular with the slip direction of slider, and the supporting roller supports on the bottom surface of breeding the pond, and in this embodiment, the supporting roller is two, and two supporting roller symmetric distribution are in the both sides of slider. The number of the rolling brush cylinders is two, and the two rolling brush cylinders are symmetrically distributed on two sides of the sliding block. The rolling brush cylinder comprises a plurality of brush hairs, and the brush hairs are propped against the bottom surface of the culture pond.
The auxiliary device for pre-sewage disposal of the embodiment drives the support roller and the rolling brush cylinder to rotate together through the shaft rod when the pre-sewage disposal valve is opened, so as to drive the sliding block to slide along the spiral pipeline, and simultaneously, the rolling brush cylinder stirs a large amount of organic matters such as residual bait, excrement, algae and the like deposited on the bottom surface of the culture pond, thus after the pre-sewage disposal valve is opened, the device can ensure that a large amount of organic matters such as residual bait, excrement, algae and the like accumulated on the bottom of the culture pond can be discharged into the sewage disposal pre-treatment pond through the pre-sewage disposal pipe, and avoids that a large amount of organic matters such as residual bait, excrement, algae and the like accumulated on the bottom of the culture pond can not be discharged into the sewage disposal pond through the pre-sewage disposal pipe in the opening process of the pre-sewage disposal valve, so as to ensure thorough sewage disposal of tail water of the culture pond and avoid opening the main sewage disposal valve at the same time, organic matters such as residual baits, excrement, algae and the like at the bottom of the pool which are not discharged through the pre-drainage pipe are discharged into the water collection area through the main drainage pipe, so that the purification effect of the culture tail water is influenced, and the treatment efficiency of the culture tail water is reduced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a tail water treatment facilities is bred in litopenaeus vannamei big-arch shelter intensification, characterized by includes:
a culture pond;
the intertidal zone organisms are distributed in the water collecting channel, and the culture tail water in the culture pond is discharged into the water collecting channel from the head end of the water collecting channel;
the sedimentation treatment tank is connected with the tail end of the water collecting channel through a first water lifting pipe, and a first water pump is arranged on the first water lifting pipe;
the aeration treatment tank is connected with the sedimentation treatment tank through a second water lifting pipe, and a second water pump is arranged on the second water lifting pipe;
the microbial adsorption treatment tank is connected with the aeration treatment tank through a first overflow pipe;
the biological wetland treatment tank is connected with the microorganism adsorption treatment tank through a second overflow pipe;
the water level of the culture pond is higher than that of the sewage pretreatment pond, the sewage pretreatment pond is connected with the head end of the water collecting channel through a third water lifting pipe, a third water pump is arranged on the third water lifting pipe, the sectional type sewage discharge device comprises a pre-sewage discharge pipe, a main sewage discharge pipe, a pre-sewage discharge valve arranged on the pre-sewage discharge pipe and a main sewage discharge valve arranged on the main sewage discharge pipe, the pre-sewage discharge pipe comprises a first pre-sewage discharge pipe arranged in the middle of the bottom surface of the culture pond, a second pre-sewage discharge pipe arranged on the bottom surface of the sewage pretreatment pond and a first connecting pipe connecting the lower end of the first pre-sewage discharge pipe with the lower end of the second pre-sewage discharge pipe, and the upper end of the first pre-sewage discharge pipe is flush with or lower than the bottom surface of the culture pond where the first pre-sewage discharge pipe is located; the main sewage discharge pipe comprises a first main sewage discharge pipe arranged in the middle of the bottom surface of the culture pond, a second main sewage discharge pipe arranged on the bottom surface of the water collecting channel and a second connecting pipe for connecting the lower end of the first main sewage discharge pipe with the lower end of the second main sewage discharge pipe, the upper end of the first main sewage discharge pipe is higher than the upper end of the first pre-sewage discharge pipe, and the second main sewage discharge pipe is close to the head end of the water collecting channel;
the pre-sewage-discharging auxiliary device comprises a spiral track extending from the middle part of the bottom surface of a culture pond to the edge of the bottom surface of the culture pond, a sliding block sliding along a spiral pipeline, a support arranged on the sliding block, a shaft rod rotatably arranged on the support, supporting rollers arranged on the shaft rod, rolling brush cylinders coaxially arranged on the shaft rod and a waterproof motor arranged on the support and used for driving the shaft rod to rotate, wherein the spiral track is composed of the spiral pipeline, the spiral pipeline is laid on the bottom surface of the culture pond, the sliding block can rotate around the spiral pipeline, the axis of the shaft rod is vertical to the sliding direction of the sliding block, the number of the supporting rollers is two, the two supporting rollers are symmetrically distributed on two sides of the sliding block, the supporting rollers are supported on the bottom surface of the culture pond, the number of the rolling brush cylinders is also two, the two rolling brush cylinders are symmetrically distributed on two sides of the sliding block, and each rolling, and the brush hair is propped against the bottom surface of the culture pond.
2. The device for treating the tail water of the greenhouse intensive cultivation of the litopenaeus vannamei according to claim 1, wherein a plurality of steel cables which are distributed side by side are arranged above the water surface of the microbial adsorption treatment tank, a plurality of biological elastic fillers are hung on the steel cables, and the lower parts of the biological elastic fillers are immersed in the water of the microbial adsorption treatment tank.
3. The device for treating the tail water of the greenhouse intensive culture of the litopenaeus vannamei according to claim 2, wherein the distance between the lower end of the biological elastic filler and the bottom surface of the microbial adsorption treatment tank is more than 1 meter.
4. The device for treating the tail water of the greenhouse intensive breeding of the litopenaeus vannamei according to the claim 1, the litopenaeus vannamei or the claim 2 or the claim 3, wherein a plurality of cement brick partition walls are arranged in the microbial adsorption treatment tank to form a tortuous flow passage in the microbial adsorption treatment tank.
5. The device for treating the tail water of the greenhouse intensive culture of the litopenaeus vannamei according to the claim 1, the claim 2 or the claim 3, wherein a plurality of tank bottom aeration pipes are arranged on the bottom surface of the aeration treatment tank, and a plurality of tank bottom aeration heads are arranged on the tank bottom aeration pipes.
6. The device for treating the tail water of the greenhouse intensive culture of the litopenaeus vannamei according to the claim 1, the claim 2 or the claim 3, wherein a gate is further arranged at the tail end of the water collecting channel.
7. The device for treating the tail water of the greenhouse intensive culture of the litopenaeus vannamei according to the claim 1, the litopenaeus vannamei or the claim 2 or the litopenaeus vannamei or the claim 3, wherein the biological wetland treatment tank is a muddy bottom pond, the side surfaces of the biological wetland treatment tank are surrounded by four side surfaces, three side surfaces are cement slopes, the other side surface is a backer surface, large-sized emergent aquatic organisms are distributed on one side of the backer surface, and intertidal zone organisms on one side of the cement slopes.
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| CN112159038A (en) * | 2020-09-28 | 2021-01-01 | 广东海洋大学 | System and method for treating and recycling tail water of aquaculture pond |
| CN112624506A (en) * | 2020-12-17 | 2021-04-09 | 王卫平 | Aquaculture tail water comprehensive treatment system and method |
| CN115072818A (en) * | 2022-08-02 | 2022-09-20 | 江阴四方游泳康复产业股份有限公司 | Breeding pond tail water treatment system |
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| CN106857363A (en) * | 2017-01-22 | 2017-06-20 | 秦皇岛粮丰海洋生态科技开发股份有限公司 | A kind of light-transmission type bio-decontamination cycle water fish farming system |
| CN107667956A (en) * | 2017-10-27 | 2018-02-09 | 潍坊市爱嘉水产养殖有限公司 | The intensive high density circulating water culture system of Penaeus Vannmei |
| CN207411238U (en) * | 2017-10-27 | 2018-05-29 | 潍坊市爱嘉水产养殖有限公司 | The intensive high density circulating water culture system of Penaeus Vannmei |
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| CN108178447A (en) * | 2018-01-11 | 2018-06-19 | 浙江省淡水水产研究所 | A kind of shrimp culture tail water treatment system |
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