CN101773744B - Back-flushing structure of seawater culture sedimentation pond - Google Patents
Back-flushing structure of seawater culture sedimentation pond Download PDFInfo
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- CN101773744B CN101773744B CN2009103127183A CN200910312718A CN101773744B CN 101773744 B CN101773744 B CN 101773744B CN 2009103127183 A CN2009103127183 A CN 2009103127183A CN 200910312718 A CN200910312718 A CN 200910312718A CN 101773744 B CN101773744 B CN 101773744B
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Abstract
The invention relates to aquiculture, in particular to a back-flushing structure of a seawater culture sedimentation pond, wherein the sedimentation pond is positioned at the inner side of a sea bank dam and comprises a plurality of unit filtering ponds which are separated by partitions but mutually communicated, the partitions adopt porous bricks, a wall foundation is built into a hollow structure through the porous bricks to form a water stream channel, the filter bed structure of each unit filtering pond comprises a quartz sand filter layer, a polythene net slice layer and a pebble filter layer from top to bottom, an air inlet pipe is extended between the polythene net slice layer and the pebble filter layer, a vent hole arranged along the longitudinal direction of the pipe body of the air inlet pipe is used for exhaust, flushing water enters from the pebble filter layer and is discharged from the top of the sedimentation pond, a variable-resistance layer is arranged on the upper surface of the quartz sand filter layer of each unit filtering pond, a top-down water stream presents a larger water blocking area through the variable-resistance layer, and the bottom-up water stream presents a smaller water blocking area, therefore, the cleaning effect of a filter material is good, the efficiency is high, the flushing time can be shortened, and the back-flushing water consumption can be saved.
Description
Technical field
The present invention relates to aquaculture, specifically is a kind of back-flushing structure that is used for seawater aquaculture sedimentation basin.
Background technology
The turbidity of China's coastal seawater in the East Sea is higher, and the normal growth that influences aquatic livestock is grown, so breeding water must carry out precipitation process earlier.The more employing of existing sedimentation basin be gravity immersion filter tank, water advances the people from the top, via the downward seepage flow of filter bed, water purification effluent at the bottom of the pond goes out by the gravity effect.The filter bed structure in the filter tank filter course that generally haves three layers, the superiors are quartz sand, and thickness is 50-90cm, and the 2nd layer is double-deck PEF net sheet, and the 3rd layer is cobblestone, thickness is 20-50cm.Sedimentation basin usually by at interval but the filter tank, a plurality of unit that is interconnected forms, partition wall adopts porous brick, the wall base is built into hollow structure by porous brick, the formation water stream channel.In operation a period of time, when the amount of filtrate impurity trapped has arrived certain degree, promptly reached after the saturation capacity that filtrate holds back, filtering layer is stopped up by impurity such as mud easily, just need clean filtrate by backwash, be typically the employing combined water and air backwash, make media regeneration can be applied to again filter, recover the seepage of water of filter bed.Because the mud content of seawater is higher, thicker mud will be precipitated in quartz sand top layer, upper strata in the not long time, influences the dirt backwash effect in the filter material layer on the one hand, has also increased the flushing water consumption in filter tank on the other hand.So need usually earlier to choose away mud with manually rooting out, with the saving backwash water, but also can consume some quartz sands simultaneously, need in time to replenish, and will consume more hand labor power.
Summary of the invention
The objective of the invention is to solve the defective that existing filter tank exists, a kind of back-flushing structure of seawater culture sedimentation pond is provided, the filter effect is improved, the backwashing water consumption is low, reduces manual labor.
For achieving the above object, the back-flushing structure of a kind of seawater culture sedimentation pond of the present invention's design, sedimentation basin is positioned at inboard, dam, seawall, separate but the filter tank, a plurality of unit that is interconnected is formed by partition wall, partition wall adopts porous brick, the wall base is built into hollow structure by porous brick and constitutes water stream channel, the filter bed structure in each filter tank, unit comprises the quartz sand filtration layer from top to bottom, PEF net lamella, the cobble filter course, air inlet pipe stretches between PEF net lamella and the cobble filter course, by the venthole exhaust of vertically arranging along pipe shaft, flushing water enters from the cobble filter course, discharge from the sedimentation basin top, it is characterized in that quartz sand filtration layer upper surface in each filter tank, unit is provided with current are up and down had the change resistance layer of different resistances, promptly this change resistance layer presents bigger current obstruction area to top-down current, and from bottom to top current are presented less current obstruction area.
Described change resistance layer becomes the baffle-wall amalgamation by a plurality of unit and forms.
Described unit becomes baffle-wall and makes shutter, and when being in the precipitation state, the shutter trend is closed, and when being in the backwash state, the shutter trend is opened.
Every gate page or leaf of described shutter is connected with the window frame hinge, but makes every each autorotation of gate page or leaf.
Described unit becomes baffle-wall and has framework, and grid is set in the framework, and each of grid crossover node in length and breadth is shaped on post, the top of post and flexible membrane center fixation.
Described flexible membrane is made of plastic film or piece of cloth.
The described water stream channel that is built into hollow structure by porous brick is made up of main channel and the subchannel that is communicated with the main channel, and the main channel is communicated with water inlet.
Described air inlet pipe is made up of main tracheae and the bronchus that is communicated with main tracheae, and main tracheae is connected with pump device.
The pool wall height that is positioned at the sedimentation basin of inboard, dam, seawall is designed to: be lower than the high flood sea level of seawater, be higher than the minimum ebb of seawater sea level; The dam, seawall is provided with and can makes the inside and outside gate that connects.
Compared with prior art, the present invention has following beneficial effect:
1, because seawater to be filtered is to intake from the top, filter tank, the mud impurity of precipitation mainly is positioned at the filter material layer top, the present invention becomes the setting of resistance layer, treat the filter seawater and present bigger resistance, flow velocity is slower, mud impurity is deposited in easily and becomes the resistance layer upper surface, and present less resistance for backwashing water, flow velocity is very fast, and backwash gas moves from bottom to top in addition, bubble and flushing water unite filtrate risen upwards promote, relexation, the cleaning effect of filtrate is better, efficient is higher, can shorten washing time, and can save the flushing water consumption.
2, because mainly being deposited in, mud impurity becomes the resistance layer upper surface, when mud impurity reaches certain thickness, can be earlier take out of sedimentation basin and outwell mud impurity, wash down by manually successively the unit being become baffle-wall, labor strength reduces, and need not to replenish sand grains, carry out combined water and air backwash again, washing time can obviously shorten.
3, because the pool wall height of sedimentation basin is lower than the high flood sea level of seawater, be higher than the minimum ebb of seawater sea level, the moisturizing selection of time opened the sluices in the high tide phase, and seawater pours into sedimentation basin automatically; Backwashing time is chosen in the seawater ebb phase, opens the sluices, and the sewage that sedimentation basin overflows enters the sea automatically, all need not power.
Description of drawings
Fig. 1 is the top plan view of embodiment of the invention sedimentation basin;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the C-C cutaway view of Fig. 1;
Fig. 4 is a B place partial enlarged drawing among Fig. 2;
Fig. 5 is a filter tank partition wall shape partial enlarged drawing among Fig. 2;
Fig. 6 becomes the shape figure of baffle-wall embodiment for unit of the present invention;
Fig. 7 is the D place cutaway view when being in the backwash state among Fig. 6;
Fig. 8 becomes the shape figure of another embodiment of baffle-wall for unit of the present invention;
Fig. 9 is the E place cutaway view when being in the backwash state among Fig. 8;
Figure 10 is the capital construction design diagram that is positioned at dam, seawall sedimentation basin.
The specific embodiment
The present invention is further described below in conjunction with accompanying drawing.
With reference to Fig. 1-Fig. 3, sedimentation basin 1 is separated by partition wall 2 but the filter tank, a plurality of unit 4 that is interconnected is formed, the air inlet 21 that is connected with pump device is installed in the top in pond, the air inlet 21 that is provided with air valve is communicated with a transverse tube 22, the a plurality of three-way connections 23 of serial connection in the transverse tube 22, each three-way connection connects an air inlet pipe 24, this air inlet pipe bending downwards enters between PEF net lamella and the cobble filter course, each filter tank, unit 4 is laid and be distributed in a zigzag to level then, every air inlet pipe 24 is vertically arranged the little passage that gathers that has along pipe shaft, to produce more bubble.Partition wall 2 adopts porous brick to be built into, each filter tank, unit 4 is interconnected, the wall base also is built into hollow structure by porous brick and constitutes current subchannel 51 (in conjunction with Fig. 5), the current main channel 5 that is built into hollow structure by porous brick is communicated with each current subchannel 51, the backwash water inlet 6 that is provided with water valve is located at the cobble filter course pool wall of sedimentation basin bottom, and be communicated with current main channel 5, this water inlet 6 when running status also as the delivery port that filtered water is provided to each fish pond.
In conjunction with Fig. 4, the back-flushing structure of a kind of seawater culture sedimentation pond of the present invention, sedimentation basin is positioned at inboard, dam, seawall, the filter bed structure in each filter tank, unit 4 in the pond is change resistance layer 8, quartz sand filtration layer 7, the PEF net lamella 31 that is provided with from top to bottom, activated carbon filter layer 3, PEF net lamella 31, cobble filter course 9, air inlet pipe 24 stretches between PEF net lamella 31 and the cobble filter course 9, and wherein PEF net lamella 31 is used for clamping activated carbon filter layer 3.
Above-mentioned change resistance layer 8 can become the baffle-wall amalgamation by a plurality of unit be formed, each unit become baffle-wall to about current have different resistances, promptly this change resistance layer presents bigger current obstruction area to top-down current, and from bottom to top current are presented less current obstruction area.
The unit becomes baffle-wall and can be made into multiple structure, such as Fig. 6, shutter shown in Figure 7, the unit becomes baffle-wall and has framework 83, every gate page or leaf 81 of shutter is connected with window frame 83 hinges 82, but make every each autorotation of gate page or leaf, the lower surface of window page or leaf 81 is shaped on fin 84, so that leave the gap of downward infiltration between per two gate pages or leaves.When being in the precipitation state, be subjected to the effect of hydraulic pressure and mud gravity, the shutter trend is closed, and current obstruction area increases, and forces flow velocity to reduce, so that silt deposit is at window page or leaf upper surface; When being in the backwash state, be subjected to the gentle bubble buoyancy function of backwash hydraulic pressure, shutter trend is opened, and current obstruction area dwindles, and flow velocity strengthens, and impurity in each filter course of its below is moved upward with the gentle bubble of backwash hydraulic pressure and is discharged from outside the pond.
The unit becomes baffle-wall and also can be made into other structure, as Fig. 8, shown in Figure 9, the unit becomes baffle-wall and has framework, and grid 86 is set in the framework, each of grid crossover node in length and breadth is shaped on post, the top of post and flexible membrane 85 center fixation that are made of plastic film or piece of cloth.When being in the precipitation state, be subjected to the effect of hydraulic pressure and mud gravity, flexible membrane 85 trends are spread out and are supported on the grid 86, and current obstruction area increases, and forces flow velocity to reduce, and silt deposit is at the flexible membrane upper surface; When being in the backwash state, be subjected to the gentle bubble buoyancy function of backwash hydraulic pressure, the flexible membrane trend folds, the similar umbrella that folds, current obstruction area dwindles, and flow velocity strengthens, and impurity in each filter course of its below is moved upward with the gentle bubble of backwash hydraulic pressure and is discharged from outside the pond.
As shown in figure 10, when capital construction designed, the height that is positioned at sedimentation basin 1 pool wall of 101 inboards, dam, seawall should be lower than the high flood sea level H1 of seawater, is higher than the minimum ebb of seawater sea level H2; Duct in the dam, seawall is provided with the gate 102 that seawater and sedimentation basin are connected, and like this, the seawater that flood tide during moisturizing can pour into sedimentation basin automatically; The sewage that sedimentation basin overflows during backwash can enter the sea automatically, need not to dispose power set.
Claims (10)
1. the back-flushing structure of a seawater culture sedimentation pond, sedimentation basin (1) is positioned at inboard, dam, seawall (101), separate but the filter tank, a plurality of unit (4) that is interconnected is formed by partition wall (2), partition wall adopts porous brick, the wall base is built into hollow structure by porous brick and constitutes water stream channel, the filter bed structure in each filter tank, unit comprises quartz sand filtration layer (7) from top to bottom, PEF net lamella (31), cobble filter course (9), air inlet pipe (24) stretches between PEF net lamella (31) and the cobble filter course (9), by the passage exhaust of air inlet pipe (24) along the vertical arrangement of pipe shaft, flushing water enters from the cobble filter course, discharge from sedimentation basin (1) top, it is characterized in that quartz sand filtration layer (7) upper surface in each filter tank, unit (4) is provided with current are up and down had the change resistance layer (8) of different resistances, promptly this change resistance layer presents bigger current obstruction area to top-down current, and from bottom to top current are presented less current obstruction area.
2. the back-flushing structure of seawater culture sedimentation pond according to claim 1 is characterized in that described change resistance layer (8) becomes the baffle-wall amalgamation by a plurality of unit and forms.
3. the back-flushing structure of seawater culture sedimentation pond according to claim 2 is characterized in that described unit becomes baffle-wall and makes shutter, and when being in the precipitation state, the shutter trend is closed, and when being in the backwash state, the shutter trend is opened.
4. the back-flushing structure of seawater culture sedimentation pond according to claim 3 is characterized in that every gate page or leaf (81) of shutter is connected with window frame hinge (82), but makes every each autorotation of gate page or leaf.
5. the back-flushing structure of seawater culture sedimentation pond according to claim 2, it is characterized in that described unit becomes baffle-wall and has framework (87), grid (86) is set in the framework, and each of grid crossover node in length and breadth is shaped on post, the top of post and flexible membrane (85) center fixation.
6. the back-flushing structure of seawater culture sedimentation pond according to claim 5 is characterized in that described flexible membrane (85) is made of plastic film or piece of cloth.
7. the back-flushing structure of seawater culture sedimentation pond according to claim 1 is characterized in that PEF net lamella (31) for two-layer, two-layer between clamping activated carbon filter layer (3).
8. the back-flushing structure of seawater culture sedimentation pond according to claim 1, the water stream channel that it is characterized in that being built into hollow structure by porous brick is made up of main channel (5) and the subchannel (51) that is communicated with the main channel, and main channel (5) are communicated with backwash water inlet (6).
9. the back-flushing structure of seawater culture sedimentation pond according to claim 1 is characterized in that air inlet pipe (24) is made up of main tracheae and the bronchus that is communicated with main tracheae, and main tracheae is connected with pump device.
10. the back-flushing structure of seawater culture sedimentation pond according to claim 1, the pool wall height that it is characterized in that being positioned at the inboard sedimentation basin (1) in dam, seawall (101) is designed to: be lower than the high flood sea level (H1) of seawater, be higher than the minimum ebb of seawater sea level (H2); The dam, seawall is provided with and can makes the inside and outside gate (102) that connects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103127183A CN101773744B (en) | 2009-12-30 | 2009-12-30 | Back-flushing structure of seawater culture sedimentation pond |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103127183A CN101773744B (en) | 2009-12-30 | 2009-12-30 | Back-flushing structure of seawater culture sedimentation pond |
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| CN101773744A CN101773744A (en) | 2010-07-14 |
| CN101773744B true CN101773744B (en) | 2011-11-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102247718B (en) * | 2011-04-26 | 2013-05-29 | 南京奥特净化工程有限公司 | Quartz sand filter and air-water backwashing method thereof |
| CN107456806B (en) * | 2017-09-11 | 2022-03-11 | 中国农业大学 | Combined filter and combined filtering system |
| CN110344488B (en) * | 2018-04-02 | 2024-02-02 | 玖龙纸业（太仓）有限公司 | Novel pipeline blowdown device |
| CN112121479A (en) * | 2019-06-24 | 2020-12-25 | 吉林嘉德蓝天环境技术有限公司 | High-efficiency supporting layer structure for prolonging service life of filter material |
| CN110339626A (en) * | 2019-07-31 | 2019-10-18 | 江苏百海环保科技有限公司 | A kind of purification of sewage filtrate precipitating pool structure and its application method |
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