CN116508711A - Concentrated continuous cultivation tail water multi-circulation treatment system - Google Patents

Abstract

The invention discloses a concentrated continuous cultivation tail water multi-circulation treatment system which comprises a cultivation pond area, a drainage main canal, a drainage branch canal, a drainage canal and an ecological purification pond, wherein the drainage main canal is arranged in the cultivation pond area; wherein, the quantity in breed aquatics pond district is a plurality of, a plurality of breed aquatics pond district distributes along the extending direction of drainage canal, drainage canal both sides distribute respectively and have a plurality of breed aquatics pond district, all be provided with the drainage canal between the adjacent breed aquatics pond district in each side of drainage canal, each drainage canal communicate respectively in with the drainage canal, the drainage canal communicates in ecological purification pond, the both sides of drainage canal are provided with the escape canal respectively, every escape canal extends along the edge of drainage canal, the escape canal is used for the breed aquatics pond district drainage and can overflow in drainage canal or the drainage canal, the escape canal still communicates with ecological purification pond, ecological purification pond is used for pouring into the purified water into the escape canal. The invention improves the purification efficiency and the utilization rate of the water body.

Description

Concentrated continuous cultivation tail water multi-circulation treatment system

Technical Field

The application relates to the technical field of water treatment, in particular to a concentrated continuous cultivation tail water multi-cycle treatment system.

Background

In the field of purification treatment of the aquaculture tail water, the freshwater aquaculture scale is stable to grow, and mainly comprises pond aquaculture, reservoir aquaculture, lake aquaculture and the like, wherein the pond aquaculture accounts for more than 50%, and the pond aquaculture scale is grown year by year. Along with the deep environmental protection treatment, various tail water treatment technologies are also rapidly developed, such as a three-pond two-dam technology mode, an artificial wetland tail water treatment mode, a one-pond one-channel simple tail water treatment mode and the like. The main process of the three-pond two-dam technology mode is an ecological ditch-sedimentation tank-filtering dam-aeration tank-filtering dam-ecological purification tank, the technology mode carries out scientific planning on a cultivation water area, on the basis of pond upgrading and transformation (water inflow and water drainage are separated), ecological treatment is carried out on cultivation tail water by using a physical and biological ecological method, recycling or standard discharge is realized, and the three-pond two-dam technology mode is a main running water treatment mode and is suitable for a fresh water concentrated continuous pond. However, the tail water treatment area of the three-pond two-dam technology mode is required to occupy 5% -10% of the total area, and the land occupation is relatively large; the technical mode adopts a single circulation mode, the circulation times are limited, and the treatment and purification efficiency is low; after long-time sedimentation in the sedimentation tank, the bottom of the tank is silted, and when the silting amount is large, water is required to be discharged for cleaning the bottom of the tank; the aeration tank requires continuous maintenance of electric power, and requires continuous investment of electric power consumption.

Disclosure of Invention

Based on the above, it is necessary to provide a concentrated continuous cultivation tail water multi-circulation treatment system. The concentrated continuous cultivation tail water multi-circulation treatment system provided by the invention has the advantages that the proportion of the occupied area of the concentrated continuous cultivation tail water multi-circulation treatment system to the total cultivation area is reduced, the circulation path is increased in the limited occupied area, and the treatment efficiency of the cultivation tail water is improved.

An embodiment of the application provides a concentrated continuous cultivation tail water multi-cycle treatment system.

A concentrated continuous cultivation tail water multi-circulation treatment system comprises a cultivation pond area, a drainage main canal, a drainage branch canal, a drainage canal and an ecological purification pond; the quantity of the culture pond areas is multiple, the culture pond areas are distributed along the extending direction of the drainage main canal, the multiple culture pond areas are distributed on two sides of the drainage main canal respectively, drainage branch canals are arranged between the adjacent culture pond areas on each side of the drainage main canal, the drainage branch canals are respectively communicated with the drainage main canal, the drainage main canal is communicated with the ecological purifying pond to be used for collecting and purifying water to be purified discharged by the drainage main canal, the two sides of the drainage main canal are respectively provided with the drainage canals, each drainage canal extends along the edge of the drainage main canal, the drainage canals are used for draining water in the culture pond areas and overflowing into the drainage main canal or the drainage branch canals, the ecological purifying pond is also communicated with the ecological purifying pond, and the ecological purifying pond is used for injecting purified water into the drainage canal.

In some embodiments, the drainage ditch comprises a first overflow groove and a second overflow groove, wherein the first overflow groove can overflow into the second overflow groove, the first overflow groove is close to the culture pond area, the second overflow groove is close to the drainage main ditch or the drainage branch ditch, and the upper part of a retaining wall of one side of the second overflow groove close to the drainage main ditch or the drainage branch ditch is a permeable filtering component.

In some embodiments, the drain is provided with a plurality of water outlets which can be closed and opened.

In some embodiments, the concentrated continuous-sheet cultivation tail water multi-circulation treatment system further comprises a submerged slope protection, the submerged slope protection is respectively arranged on the bottom wall of the drainage main canal, which is close to the shore, at two sides of the drainage branch canal, the submerged slope protection is respectively arranged on the bottom wall of the drainage branch canal, which is close to the shore, at two sides of the drainage branch canal, and the drainage canal can overflow to the submerged slope protection.

In some embodiments, the subsurface flow slope protection comprises a gravel layer, a baffle structure and herbaceous plants, wherein the gravel layer is respectively laid on the canal bottom wall of the main drainage canal and the canal bottom wall of the branch drainage canal, a plurality of spaced baffle structures are embedded in the gravel layer, and the herbaceous plants are planted in the gravel layer.

In some embodiments, the concentrated continuous cultivation tail water multi-cycle treatment system further comprises an ecological interception dam, at least one ecological interception dam is arranged in the drainage main canal, and the ecological interception dam is arranged in the drainage branch canal.

In some embodiments, one of the ecological interception dams is disposed in the drainage canal, the ecological interception dam in the drainage canal is close to the drainage canal, and a plurality of ecological interception dams are disposed in the drainage canal.

In some embodiments, the concentrated continuous cultivation tail water multi-cycle treatment system further comprises a photovoltaic cultivation area, and the photovoltaic cultivation area is arranged in at least one cultivation pond area.

In some of these embodiments, the concentrated continuous sheet aquaculture tail water multi-cycle treatment system further comprises submerged plants planted at the bottom of the main drain and at the bottom of the branch drain.

In some embodiments, the concentrated continuous sheet aquaculture tail water multi-cycle treatment system further comprises an aeration device, wherein the aeration device is arranged in the drainage main canal and/or the drainage branch canal and is used for aerating the drainage main canal and/or the drainage branch canal to provide oxygen.

In some embodiments, the concentrated continuous-sheet cultivation tail water multi-cycle treatment system further comprises an ecological floating bed, wherein the ecological floating bed is arranged in the drainage main canal and/or the drainage branch canal.

In some embodiments, the ecological purifying tank comprises a purifying tank body, and a shore area emergent aquatic plant, a submerged plant, a floating plant, non-herbivorous fishes and benthic animals which are positioned in the tank body, wherein an aeration device and a plurality of ecological floating beds are also arranged in the ecological purifying tank.

The proportion of the occupied area of the concentrated continuous cultivation tail water multi-cycle treatment system to the total cultivation area is reduced, a plurality of purification and cycle treatment paths are increased in the limited occupied area, dissolved oxygen of water can be promoted in each path, the treatment efficiency of cultivation tail water is improved, meanwhile, sediment of the cultivation tail water is easier to clean, and the occupied area is not increased.

The concentrated continuous cultivation tail water multi-circulation treatment system has the following beneficial effects:

(1) The drainage ditch replaces the function of the sedimentation tank, so that the occupation area of the traditional sedimentation tank is reduced. Through the multiple groups of circulation modes, the purification efficiency and the utilization rate of the water body are improved. Specifically, the circulation mode comprises drainage ditch, undercurrent slope protection, drainage branch ditch and drainage ditch; drainage ditch- & gt subsurface flow slope protection- & gt drainage main ditch- & gt drainage ditch; drainage ditch, subsurface flow slope protection, drainage branch ditch, drainage main ditch and drainage ditch; the method comprises the steps of tail water in the culture pond area, drainage ditch, undercurrent slope protection, drainage branch ditches, drainage main ditches, ecological purification tanks, drainage ditches and water purification in the culture pond area, so that a plurality of groups of circulation modes are realized, and the treatment efficiency and the treatment effect of the culture tail water are improved.

(2) The water flows in the drainage ditch, the water flows downwards from the first overflow groove into the second overflow groove and the water flows into the subsurface flow slope protection from the second overflow groove, the water can be fully contacted with air to increase the dissolved oxygen of the water body, and the aeration devices are arranged in the drainage main canal and/or the drainage branch canal and the ecological purification tank to replace the action of the aeration tank, so that the occupied area of the treatment system is reduced.

(3) The drainage ditch is provided with a plurality of spaced water outlets which can be closed and opened, so that sediment and drainage in the drainage ditch are cleaned, and maintenance cost is reduced.

(4) The photovoltaic cultivation area is added, the energy consumption problem in the pond cultivation process is solved by combining pond cultivation with photovoltaic cultivation, the photovoltaic cultivation can provide power for the aeration device and the water suction pump, the energy is clean, the self-sufficiency of power is realized, and the maintenance cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort to a person skilled in the art.

For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts throughout the following description.

FIG. 1 is a schematic front view of a centralized continuous cultivation tail water multi-cycle treatment system according to an embodiment of the invention;

FIG. 2 is a schematic cross-sectional view of a drainage ditch and a submerged slope protection of a concentrated continuous-sheet cultivation tail water multi-cycle treatment system according to an embodiment of the invention;

FIG. 3 is a schematic cross-sectional view of a main drain of a concentrated continuous cultivation tail water multi-cycle treatment system according to an embodiment of the invention.

Description of the reference numerals

10. A concentrated continuous cultivation tail water multi-cycle treatment system; 100. an aquaculture pond area; 200. a drain main channel; 300. a drainage branch canal; 400. a drainage ditch; 410. a first overflow trough; 420. a second overflow trough; 500. an ecological purifying pool; 600. undercurrent slope protection; 610. a gravel layer; 620. a baffle structure; 630. a herb plant; 700. an ecological interception dam; 800. a photovoltaic cultivation area; 900. an aeration device; 1000. an ecological floating bed; 1100. submerged plants.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present invention, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The embodiment of the application provides a concentrated continuous cultivation tail water multi-circulation treatment system, which aims to solve the problems that in a three-pond two-dam technical mode in the prior art, the tail water treatment area is required to occupy 5% -10% of the total area, and the land occupation is relatively large; the technical mode adopts a single circulation mode, the circulation times are limited, and the problem of low purification efficiency is solved; after long-time sedimentation in the sedimentation tank, the bottom of the tank is silted, and when the silting amount is large, water is required to be discharged for cleaning the bottom of the tank; and at least one of the problems that the aeration tank needs to maintain continuous electric power and the cost of continuously inputting electric power consumption is required. The following describes the concentrated continuous cultivation tail water multi-cycle treatment system with reference to the attached drawings.

Referring to fig. 1, for an exemplary illustration, fig. 1 is a schematic front view of a centralized continuous cultivation tail water multi-cycle treatment system 10 according to an embodiment of the present application. The concentrated continuous sheet aquaculture tail water multi-cycle treatment system 10 of the present application can be used for aquaculture tail water treatment applications.

For a more clear description of the structure of the centralized continuous cultivation tail water multi-cycle treatment system 10, the centralized continuous cultivation tail water multi-cycle treatment system 10 will be described below with reference to the accompanying drawings.

Referring to FIG. 1, an exemplary multi-cycle system 10 for concentrated continuous sheet culture tail water includes a culture pond area 100, a main drain 200, a branch drain 300, a drain 400, and an ecological purification tank 500.

The number of the culture pond areas 100 is plural. The plurality of culture pond areas 100 are distributed along the extension direction of the main drain 200. A plurality of culture pond areas 100 are respectively distributed at two sides of the main drainage canal 200. Drainage branch channels 300 are arranged between the adjacent culture pond areas 100 on each side of the drainage main channel 200, and each drainage branch channel 300 is respectively communicated with the drainage main channel 200. The main drain 200 communicates with the ecological purifying tank 500 for collecting and purifying water to be purified discharged from the main drain 200. Drainage ditches 400 are provided on both sides of the drainage main ditch 200, respectively. Each drain 400 extends along the edge of the main drain 200, the edge of the branch drain 300. The drainage ditch 400 is used to drain the aquaculture pond area 100 and can overflow into the main drainage ditch 200 or the branch drainage ditches 300. The drain 400 is also in communication with the ecological purifying tank 500. The ecological purifying tank 500 is used to inject purified water into the drain 400.

The proportion of the occupied area of the concentrated continuous cultivation tail water multi-cycle treatment system 10 to the total cultivation area is reduced, a plurality of purification cycle treatment paths are added in the limited occupied area, dissolved oxygen of a water body can be lifted in each path, the treatment efficiency of the cultivation tail water is improved, meanwhile, sediment of the cultivation tail water is easier to clean, and the occupied area is not increased.

In some of these embodiments, as shown in FIG. 1, the drain 400 extends along the edge of the main drain 200 and the edge of the branch drain 300 such that the portion of the drain 400 within the branch drain 300 forms a "figure" shape.

In some of these embodiments, referring to FIG. 1, FIG. 1 shows six pond areas 100. Wherein three pond areas 100 are disposed on one side of the main drain 200 and three pond areas 100 are disposed on the other side of the main drain 200. The three culture pond areas 100 on both sides of the main drainage canal 200 are equally spaced apart, and one drainage canal 300 is provided between adjacent culture pond areas 100. It will be appreciated that the number of the culture pond areas 100 is not limited to the above, and the number of the culture pond areas 100 may be set according to actual needs.

In some embodiments, referring to fig. 2, fig. 2 is a schematic cross-sectional view of a drainage ditch 400 and a submerged slope protection 600 of a concentrated continuous sheet type cultivation tail water multi-cycle treatment system 10 according to an embodiment of the invention, wherein the drainage ditch 400 comprises a first overflow trough 410 and a second overflow trough 420. The first overflow trough 410 can overflow into the second overflow trough 420. Wherein the first overflow trough 410 is adjacent to the pond area 100. The second overflow trough 420 is adjacent to either the main drain 200 or the branch drain 300.

The drainage ditch 400 is arranged as a two-step ladder formed by the first overflow groove 410 and the second overflow groove 420, one is higher and the other is lower, the second overflow groove 420 is close to one side of the submerged flow slope protection 600, and tail water in the first overflow groove 410 overflows to the second overflow groove 420 and then overflows to the submerged flow slope protection 600. The drainage ditch 400 adopts a high-low two-stage mode, and the arrangement of the first overflow groove 410 and the second overflow groove 420 can enable suspended matters in tail water to be better deposited at the bottom of the second overflow groove 420, and the tail water can be fully contacted with air in the flowing and overflowing process, so that the dissolved oxygen of water is increased, the activity of microorganisms with oxygen respiration is improved, and the efficiency of decomposing organic matters by the microorganisms is increased. The culture tail water (more suspended matters in water) is directly discharged into the second overflow groove 420, the water overflows after overflowing to the permeable part, suspended matters are remained in the second overflow groove 420, the water pumped in by the water suction pump from the drainage main channel 200, the drainage branch channel 300 or the ecological purifying pond 500 (at the moment, few suspended matters in water) is discharged into the first overflow groove 410, and overflows to the second overflow groove 420 after the first overflow groove 410 is full of water, at the moment, the water quality in the first overflow groove 410 is relatively good, and the water can be pumped back to the culture pond area 100 for recycling.

In some embodiments, the upper portion of the retaining wall of the second overflow groove 420 near the side of the main drainage canal or the branch drainage canal is a water permeable filtering component, and the water permeable filtering component adopts a water permeable material such as a gabion retaining wall, which acts as an interception net, water overflows and flows away, and suspended matters in water are blocked by the water permeable filtering component.

In some of these embodiments, the drain 400 is provided with a plurality of closable and openable drain openings. The drain 400 is provided with a plurality of spaced closable and openable drain openings to clean sediment and drain water in the drain 400 and reduce maintenance costs. The drain opening is not shown in the drawings.

In some of these embodiments, the drain 400 has a slope that can facilitate overflow of tail water within the drain 400.

In some of these embodiments, referring to FIG. 2, the concentrated continuous sheet aquaculture tail water multi-cycle treatment system 10 further includes a submerged slope protection 600. The bottom walls of the channels on both sides of the drainage main channel 200, which are close to the shoreside, are respectively provided with a subsurface flow protection slope 600. The bottom walls of the drainage branch channels 300, which are close to the sides, are respectively provided with a subsurface flow slope protection 600. Drain 400 is capable of overflowing into subsurface flow slope 600. Referring to fig. 1, the length of the submerged slope 600 is the same as the length of the drain 400, and extends in synchronization with the extending direction of the drain 400.

In some of these embodiments, the subsurface flow revetment 600 comprises a gravel layer 610, baffle structures 620, and herbs 630. Gravel layers 610 are respectively laid on the bottom walls of the main drain 200 and the side drain 300. The gravel layer 610 is embedded with a plurality of baffle structures 620 spaced apart, and herbs 630 are planted in the gravel layer 610. The baffle structure 620 is formed by weaving thick bamboo sticks and bamboo strips for increasing the stability of the gravel layer 610, and grass 630 seeds with developed root systems and good water resistance are sowed in the gravel layer 610 to finally form grass 630, wherein the grass 630 has ornamental value, and the grass 630 can be one or more selected from festuca arundinacea, ryegrass and bermuda grass. The subsurface flow revetment 600 provides an adhesion space for purifying microorganisms by utilizing the surface of the gravel layer 610, and combines the root systems of the herbaceous plants 630 to absorb and digest pollutants in water under the combined action of the two, and then overflows into the drainage branch channel 300 and the drainage main channel 200.

In some of these embodiments, the centralized continuous cultivation tail water multi-cycle treatment system 10 further includes an ecological intercept dam 700. At least one ecological interception dam 700 is provided in the main drain 200. An ecological interception dam 700 is provided in the drainage canal 300.

In some of these embodiments, an ecological intercept dam 700 is disposed within the drainage canal 300. The ecological block dam 700 in the main drain 300 is adjacent to the main drain 200, and a plurality of ecological block dams 700 are provided in the main drain 200.

In some embodiments, the ecological interception dam 700 is formed by stacking large-particle-size stones, and the ecological interception dam 700 can also serve as an adhesion bed for microorganisms and can also play a role in filtering and interception. Referring to fig. 1, a plurality of ecological interception dams 700 are provided in the main drain 200, wherein one ecological interception dam 700 is provided between two corresponding culture pond areas 100 at both sides of the main drain 200, respectively.

In some of these embodiments, a suction pump is provided at the ecological intercept dam 700. The suction pump is used to pump water in the drain branch channel 300 into the corresponding drain 400, or the suction pump is used to pump water in the drain main channel 200 into the drain 400. The suction pump is not shown in the drawings.

In some of these embodiments, a water pump is installed in the ecological purifying tank 500, and the ecological purifying tank 500 injects purified water into the drain 400 through the water pump.

In some of these embodiments, the centralized continuous sheet aquaculture tail water multi-cycle treatment system 10 further includes a photovoltaic aquaculture area 800. At least one of the pond areas 100 has a photovoltaic pond area 800 disposed therein.

In some of these embodiments, the photovoltaic farm 800 is configured with solar panels, attached power distribution rooms, wiring systems, control systems, and the like. The control system is electrically connected with the water suction pump. The solar power generation panel can supply power to the water pump to realize resource utilization.

In some of these embodiments, the centralized continuous cultivation tail water multi-cycle treatment system 10 further comprises a submerged plant 1100. Submerged plants 1100 are planted at the bottom of the main drain 200 and at the bottom of the branch drain 300. Preferably, submerged plant 1100 includes one or more of picrasma quassioides, foxtail algae, and malaytea scurfpea.

In some of these embodiments, the centralized continuous sheet aquaculture tail water multi-cycle treatment system 10 further includes an aeration device 900. Aeration devices 900 are disposed within the main drain 200 and/or the branch drain 300. Aeration device 900 is used to aerate the interior of main drain 200 and/or branch drain 300 to provide oxygen.

In some of these embodiments, the centralized continuous cultivation tail water multi-cycle treatment system 10 further includes an ecological floating bed 1000. An ecological floating bed 1000 is disposed within the main drain 200 and/or the branch drain 300. The ecological floating bed 1000 plays a role in absorbing nutrient salts in water, and brings out the nutrient salts in the water body through the growth of plants. The ecological floating bed comprises a floating bed part and emergent aquatic plants planted on the floating bed part, wherein the emergent aquatic plants comprise one or more of canna, sedge, typha and Lythrum. The stem and leaf of emergent aquatic plant is on water surface, and the root system grows in water to absorb nutrients.

In some of these embodiments, ecological purification tank 500 includes a purification tank body, a riparian emergent aquatic plant, a submerged aquatic plant 1100, a floating plant, a non-herbivorous fish, and benthic animals positioned within the tank body. An aeration device and a plurality of ecological floating beds are also arranged in the ecological purifying tank 500, and the aeration device and the plurality of ecological floating beds in the ecological purifying tank 500 are not shown.

The concentrated continuous cultivation tail water multi-cycle treatment system 10 comprises the following multiple cycles when in use:

(1) The culture tail water in the culture pond area 100 is discharged into the drainage ditch 400, the tail water flows to other areas through the gradient of the drainage ditch 400, is precipitated in the ditch, flows into the subsurface flow slope protection 600 in an overflow mode, flows into the drainage branch ditch 300 and the drainage main ditch 200, enters the ecological purification pond 500 after passing through the ecological interception dam 700, and the purified water purified by the ecological purification pond 500 is pumped into the drainage ditch 400 through the water suction pump, flows into each culture pond area 100 through the drainage ditch 400, and completes the large circulation.

(2) The culture tail water in the culture pond area 100 overflows from the drainage ditch 400 to the subsurface flow slope protection 600, flows into the drainage branch canal 300, and is pumped into the drainage ditch 400 by the water suction pump at the ecological interception dam 700 in the drainage branch canal 300 for circulation.

(3) The culture tail water in the culture pond area 100 overflows from the drainage ditch 400 to the subsurface flow slope protection 600, flows into the drainage main ditch 200, and is pumped into the drainage ditch 400 by the water suction pump at the ecological interception dam 700 in the drainage main ditch 200 for circulation.

(4) After the culture tail water in the culture pond area 100 overflows from the drainage ditch 400 to the subsurface flow slope protection 600 and flows into the drainage branch ditch 300, the tail water overflows to the drainage main ditch 200 through the ecological interception dam 700 in the drainage branch ditch 300, and then the water is pumped into the drainage ditch 400 by the water suction pump at the ecological interception dam 700 in the drainage main ditch 200 for circulation.

In summary, the concentrated continuous cultivation tail water multi-cycle treatment system 10 has the following beneficial effects:

(1) The drainage ditch 400 replaces the function of the sedimentation tank, so that the occupation area of the traditional sedimentation tank is reduced. Through the multiple groups of circulation modes, the purification efficiency and the utilization rate of the water body are improved. Specifically, the circulation mode includes drain 400→undercurrent slope protection 600→drain branch channel 300→drain 400; drain 400- & gt subsurface flow slope protection 600- & gt drain main channel 200- & gt drain 400; drain 400- & gt subsurface flow slope protection 600- & gt drain branch channel 300- & gt drain main channel 200- & gt drain 400; the method comprises the steps of tail water of the culture pond area 100, drainage ditch 400, undercurrent slope protection 600, drainage branch ditch 300, drainage main ditch 200, ecological purification tank 500, drainage ditch 400 and water purification of the culture pond area 100, so that a plurality of groups of circulation modes are realized, and the treatment efficiency and the treatment effect of the culture tail water are improved.

(2) The water flows in the drainage ditch 400, the water flows downwards from the first overflow groove 410 into the second overflow groove 420 and the second overflow groove 420 flows into the subsurface flow slope protection 600, the water can be fully contacted with air to increase the dissolved oxygen of the water body, and the aeration devices are arranged in the drainage main channel 200 and/or the drainage branch channel 300 and the ecological purifying tank 500 to replace the action of the aeration tank, so that the occupied area of the treatment system is reduced.

(3) The drain 400 is provided with a plurality of spaced closeable and openable drain openings to clean sediment and drain water in the drain 400 and reduce maintenance costs.

(4) The photovoltaic cultivation area 800 is added, the energy consumption problem in the pond cultivation process is solved by combining pond cultivation with photovoltaic cultivation, the photovoltaic cultivation can provide power for the aeration device 900 and the water suction pump, the energy is clean, the self-sufficiency of power is realized, and the maintenance cost is reduced.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (12)

1. The concentrated continuous cultivation tail water multi-circulation treatment system is characterized by comprising a cultivation pond area, a drainage main canal, a drainage branch canal, a drainage canal and an ecological purification pond; the quantity of the culture pond areas is multiple, the culture pond areas are distributed along the extending direction of the drainage main canal, the multiple culture pond areas are distributed on two sides of the drainage main canal respectively, drainage branch canals are arranged between the adjacent culture pond areas on each side of the drainage main canal, the drainage branch canals are respectively communicated with the drainage main canal, the drainage main canal is communicated with the ecological purifying pond to be used for collecting and purifying water to be purified discharged by the drainage main canal, the two sides of the drainage main canal are respectively provided with the drainage canals, each drainage canal extends along the edge of the drainage main canal, the drainage canals are used for draining water in the culture pond areas and overflowing into the drainage main canal or the drainage branch canals, the ecological purifying pond is also communicated with the ecological purifying pond, and the ecological purifying pond is used for injecting purified water into the drainage canal.

2. The concentrated continuous sheet aquaculture tail water multi-cycle treatment system of claim 1, wherein the drainage ditch comprises a first overflow tank and a second overflow tank, the first overflow tank can overflow into the second overflow tank, wherein the first overflow tank is close to the aquaculture pond area, the second overflow tank is close to the drainage main ditch or the drainage branch ditch, and a water permeable filtering part is arranged at the upper part of a retaining wall at one side of the second overflow tank close to the drainage main ditch or the drainage branch ditch.

3. The concentrated continuous cultivation tail water multi-cycle treatment system according to claim 1, wherein a plurality of water discharge openings capable of being closed and opened are arranged on the water discharge ditch.

4. The concentrated continuous cultivation tail water multi-circulation treatment system according to claim 1, further comprising a submerged slope protection, wherein the submerged slope protection is respectively arranged on the bottom wall of the canal near the bank at two sides of the main drainage canal, the submerged slope protection is respectively arranged on the bottom wall of the canal near the bank at two sides of the branch drainage canal, and the drainage canal can overflow to the submerged slope protection.

5. The concentrated continuous sheet aquaculture tail water multicycle treatment system of claim 4 wherein said subsurface flow revetment comprises a gravel layer, baffle structures and herbs, said gravel layer being laid on the bottom wall of said main drain and on the bottom wall of said branch drain, said baffle structures being embedded in said gravel layer at a plurality of intervals, said herbs being planted in said gravel layer.

6. The concentrated continuous cultivation tail water multi-cycle treatment system according to any one of claims 1 to 5, further comprising an ecological interception dam, wherein at least one ecological interception dam is arranged in the main drainage canal, and the ecological interception dam is arranged in the branch drainage canal.

7. The concentrated continuous sheet aquaculture tail water multi-cycle treatment system according to claim 6, wherein one of said ecological interception dams is disposed in said drain branch canal, said ecological interception dam in said drain branch canal being adjacent to said drain main canal, and a plurality of said ecological interception dams are disposed in said drain main canal.

8. The concentrated continuous cultivation tail water multi-cycle treatment system according to any one of claims 1-5 and 7, further comprising a photovoltaic cultivation area, wherein the photovoltaic cultivation area is arranged in at least one cultivation pond area.

9. The concentrated continuous-sheet cultivation tail water multi-cycle treatment system according to any one of claims 1 to 5 and 7, further comprising submerged plants planted at the canal bottom of the main drainage canal and at the canal bottom of the branch drainage canal.

10. The concentrated continuous sheet aquaculture tail water multi-cycle treatment system according to any one of claims 1 to 5 and 7, further comprising an aeration device provided in said main drain and/or said branch drain for aerating said main drain and/or said branch drain to provide oxygen.

11. The concentrated continuous cultivation tail water multi-cycle treatment system according to any one of claims 1 to 5 and 7, further comprising an ecological floating bed, wherein the ecological floating bed is arranged in the drainage main canal and/or the drainage branch canal.

12. The concentrated continuous cultivation tail water multi-cycle treatment system according to any one of claims 1-5 and 7, wherein the ecological purification tank comprises a purification tank body, and a shore area emergent aquatic plant, a submerged plant, a floating plant, non-herbivorous fishes and benthic animals which are positioned in the tank body, and an aeration device and a plurality of ecological floating beds are also arranged in the ecological purification tank.