CN105217780A - A kind of self-stip fluidized bed bio filtration unit for sea farming - Google Patents
A kind of self-stip fluidized bed bio filtration unit for sea farming Download PDFInfo
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- CN105217780A CN105217780A CN201510746273.5A CN201510746273A CN105217780A CN 105217780 A CN105217780 A CN 105217780A CN 201510746273 A CN201510746273 A CN 201510746273A CN 105217780 A CN105217780 A CN 105217780A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a kind of self-stip fluidized bed bio filtration unit for sea farming, comprise cylindrical shell, be provided with bed expansion district and suspended substance settling region in the inside of described cylindrical shell; Be filled with filtrate in described bed expansion district, the top in bed expansion district is provided with self-stip assembly and automatic detection components, and self-stip assembly is used for cleaning the suspended substance of filter material surface, and the filtrate after cleaning reenters bed expansion district; Described automatic detection components is for controlling self-stip assembly.Suspended substance settling region is positioned at the top of self-stip assembly, and self-stip components apart suspended substance out reaches suspended substance settling region behind bed expansion district, discharges after precipitation.
Description
Technical field
The present invention relates to field of marine aquaculture, specifically, be related specifically to a kind of self-stip fluidized bed bio filtration unit for sea farming.
Background technology
Along with the fast development of modern agriculture, growing just gradually of the marine fish culture industries such as flounder flounder class, because this industry is subject to region, water source, the restriction of temperature, never forms industry size.Circulating water cultivation pattern because of its have efficient, controlled, water saving economizes ground, not by the advantage such as geographical environment restriction, being promoted in culture fishery all over the world just gradually and applying, is one of Main way of following culture fishery Sustainable development.In circulating water culture system, biological filter is the unit for treating water of core, the microorganism of filling surface in filter is utilized to come nutritive salt or the organism such as ammonia nitrogen in degrading cultivation water, nitrite nitrogen, chemical oxygen demand (COD) by nitration reaction, and then reach the object purified water, to guarantee the normal growth of fish.
Domesticly at present mainly contain fixed bed biological filter and moving bed biological filter for the biological filter in circulating water culture system, the filler adopted has stereo-elastic fiber, biochemistry felt, modified suspending filler and activated carbon etc., normal employing natural membrane method and inoculation spawn culture method carry out bio-film colonization cultivation, the start time of its biological filter is general longer, particularly under worst cold case, it is long that general biological filter ubiquity starts the cycle, the problems such as treatment effect is undesirable.And conventional fluidization bed biological filter because of its structure reasonable not, in operational process, there is bed expansion too fast, the filtrate in filter is volatile, the uneven first-class problem of internal flow state, and then have impact on high efficiency and the stability of device.
In sum, existing same device Problems existing is as follows:
1. at present conventional fluidization bed biological filter operationally more easily forms dead angle area in inside, cause fluidised form heterogeneity, reduce the mass transfer effect of water mesostroma and filler, and then have impact on the efficiency of device water treatment.
2. conventional fluidization bed biological filter is operationally due to without self-stripping unit, top layer filtrate easily adheres to increasing suspended substance, and therefore the weight of filtrate lighten, thus bed expansion height becomes more and more higher, cause occurring filterins media run-off phenomenon, and then have impact on the processing efficiency of device.
3. the packing specific area in traditional biological filter is general not high, the filling surface of unit volume cannot adhere to abundant coenosis, and then have impact on the water treatment efficiency of device.
4. traditional biological filter often adopts natural membrane mode to carry out the startup of filter, it is long to there is start time in the method, not easily inoculates the problem such as successfully, causes filter processing efficiency low, the problems such as operating performance is unstable, and then have impact on the efficiency of circulating water culture system operation.
Summary of the invention
The object of the invention is to for deficiency of the prior art, provide a kind of self-stip fluidized bed bio filtration unit for sea farming, to solve the problem.
Technical problem solved by the invention can realize by the following technical solutions:
For a self-stip fluidized bed bio filtration unit for sea farming, comprise cylindrical shell, be provided with bed expansion district and suspended substance settling region in the inside of described cylindrical shell;
The bottom in described bed expansion district is provided with the annular cloth water cavity for intaking, the annular water distribution gap be communicated with bed expansion district is provided with in the bottom of described annular cloth water cavity, filtrate is filled with in bed expansion district, the top in described bed expansion district is provided with self-stip assembly, described self-stip assembly comprises material sucking pipes, transfer lime, water pump and mixing device, described material sucking pipes is for sucking filtrate, material sucking pipes is communicated with water pump by transfer lime, after the suspended substance of impeller to filter material surface of described water pump inside is removed for the first time, again described filtrate is imported in mixing device, spiral blade is provided with in described mixing device, it is for carrying out secondary removal to the suspended substance of filter material surface, the outlet of described mixing device is communicated with annular cloth water cavity,
Also install automatic detection components in described bed expansion district, described automatic detection components comprises data acquisition module, radio-frequency guide-admission object-position switch and water pump control modules; Radio-frequency guide-admission object-position switch is installed on the below of material sucking pipes, the signal output part of radio-frequency guide-admission object-position switch is connected with water pump control modules, radio-frequency guide-admission object-position switch detects filtrate height in bed expansion district in real time by data acquisition module and sends to water pump control modules, filtrate setting height is stored in described water pump control modules, after water pump control modules receives the filtrate height of radio-frequency guide-admission object-position switch transmission, itself and filtrate setting height are compared, if filtrate height is greater than filtrate setting height, then water pump control modules starts water pump;
Described suspended substance settling region is positioned at the top of self-stip assembly, self-stip components apart suspended substance out reaches suspended substance settling region behind bed expansion district, described suspended substance settling region comprises precipitation cavity, ring baffle is provided with in precipitation cavity, described ring baffle is positioned at exit, bed expansion district, the outer wall in ring baffle and bed expansion district forms downward runner, annular settling region is provided with in the exit of described downward runner, annular settling region has the sewage draining exit for discharging suspended substance, described annular settling region and flow passage upwards, water outlet is provided with in the end of runner upwards.
Further, in the outer side wall bottom described bed expansion district, be provided with annular cloth water cavity,
Be provided with annular cloth water cavity in outer side wall bottom described bed expansion district, the water inlet direction of described water-in is identical with the tangential direction of annular cloth water cavity; The annular water distribution gap of current bottom annular cloth water cavity enters bed expansion district, produces strong rotation upwelling under the effect of taper water distribution board, and then drives the upwards expansion of filtrate.
Further, described material sucking pipes comprises the acrylic cylinder that is positioned at mid-way and radially distributes and the some acrylic pipes be communicated with described acrylic cylinder, leave gap in the bottom of described some acrylic pipes, described gap is for sucking filtrate.
Further, described filtrate adopts diameter range to be the spherical glass beads of 0.2-0.3mm.
Further, described water pump adopts timing mode, water pump is after water pump control modules provides signal enabling, computing time, when after arrival setting-up time, water pump control modules controls water pump and quits work, if now filtrate height is still higher than setting height, then continue the water pump action of next time period, if filtrate height is lower than setting height, then wait for that control signal starts again next time.
Further, the outlet of described mixing device arrives taper water distribution board through annular cloth water cavity, and the outlet of described mixing device and the outlet of fluidized bed bio filtration unit water-in lay respectively at the both sides of annular cloth water cavity, and both line angles are 180 °.
Compared with prior art, beneficial effect of the present invention is as follows:
1, this device adopts glass microballon as the filler of filter, and particle diameter is 0.2-0.3mm, and its specific surface area is up to 10000m
2/ m
3, can be the specific surface area that microorganism growth provides enough large, be beneficial to attachment and the breeding of microorganism.The more traditional filtrate quartz sand of this filtrate has more wear resistance and intensity, and homogeneity is better, is beneficial to the high turbulent extent forming solid liquid phase, to promote the mass transfer between water body mesostroma and microorganism, and then promotes the working efficiency of filter.
2, this device controls the irregular unlatching of water pump by radio-frequency guide-admission object-position switch, and level switch is by the signal measured by data collecting module collected, and when the height of filtrate meets or exceeds set(ting)value, system exports control signal, starts water pump.Which can realize the stable of bed expansion height.
3, suction strainer materials device is positioned over bed setting height place, and top layer filtrate sucks by water pump bottom each radial steel pipe, then enters in a mixing device.The filtrate on most top layer can suck by this kind of suction strainer materials device equably, by the rubbing effect with blade in mixing device, not removing only the suspended substance that filter material surface is blocked up, also achieves the recycling of filtrate.
4, the filtrate sucked on top layer by water pump enters annular cloth water cavity in a tangential manner, its water inlet angle becomes 180 degree with device water inlet angle, which can promote the original rotary water current of filter, avoids unidirectional water inflow and occurs the problems such as dead angle area, and then optimizes the fluidised form of filter inside.
5, precipitation zone is arranged at device top, due to this Domain Volume comparatively lower region become suddenly large, can by self-stripping unit remove suspended substance precipitate, by sewage draining exit by outside its discharge strainer.
6, this apparatus structure is reasonable, and highly effective, floor space is few, and NH_3-N treating load is high, and can be designed to enough large filter when envrionment conditions allows to meet the needs of system bearing amount.
7, under seawater oligotrophic operating mode, this device can realize quick bio biofilm under cryogenic by the mode of the former filtrate of inoculation, and efficiently can remove the nutritive salt such as the ammonia nitrogen in sea farming system.
Accompanying drawing explanation
Fig. 1 is the structural representation of self-stip fluidized bed bio filtration unit of the present invention.
Fig. 2 is the schematic diagram of self-stip fluidized bed bio filtration unit of the present invention.
Fig. 3 is the schematic diagram of material sucking pipes of the present invention.
Fig. 4 is the control flow chart from washing down assembly of the present invention.
Fig. 5 is the structural representation of annular cloth water cavity of the present invention.
Number in the figure illustrates: the outlet 19 of cylindrical shell 1, bed expansion district 2, suspended substance settling region 3, taper water distribution board 4, annular cloth water cavity 5, water-in 6, filtrate 7, material sucking pipes 8, transfer lime 9, water pump 10, mixing device 11, acrylic cylinder 12, acrylic pipe 13, gap 14, ring baffle 15, annular settling region 16, sewage draining exit 17, water outlet 18, water-in, the outlet 20 of mixing device, annular water distribution gap 21.
Embodiment
The technique means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
See Fig. 1 and Fig. 2, a kind of self-stip fluidized bed bio filtration unit for sea farming, comprises cylindrical shell 1, is provided with bed expansion district 2 and suspended substance settling region 3 in the inside of described cylindrical shell 1.
The bottom in described bed expansion district 2 is provided with the taper water distribution board 4 for intaking, annular cloth water cavity 5 is provided with in outer side wall bottom described bed expansion district 2, the bottom of described annular cloth water cavity 5 is communicated with bed expansion district 2 through the annular water distribution gap 21 of bottom, the other end of annular cloth water cavity 5 is set to water-in 6, the water inlet direction of described water-in 6 is identical with the tangential direction of annular cloth water cavity 5, for generation of strong rotary water current.
The annular water distribution gap be communicated with bed expansion district 2 is provided with bottom described annular cloth water cavity 5, filtrate 7 is filled with in bed expansion district 2, the top in described bed expansion district 2 is provided with self-stip assembly, and described self-stip assembly comprises material sucking pipes 8, transfer lime 9, water pump 10 and mixing device 11.See Fig. 3, described material sucking pipes 8 comprises the acrylic cylinder 12 that is positioned at mid-way and radially distributes and the some acrylic pipes 13 be communicated with described acrylic cylinder 12, leave gap 14 in the bottom of described some acrylic pipes 13, described gap 14 is for sucking filtrate 7.Material sucking pipes 8 is communicated with water pump 10 by transfer lime 9, after the suspended substance of impeller to filtrate 7 surface of described water pump 10 inside is removed for the first time, again described filtrate 7 is imported in mixing device 11, in described mixing device 11, be provided with spiral blade, it is for carrying out secondary removal to the suspended substance on filtrate 7 surface.
See Fig. 5, the outlet 20 of described mixing device arrives bed expansion district 2 through annular cloth water cavity 5, the outlet 19 of water-in arrives bed expansion district through annular cloth water cavity, the outlet 20 of described mixing device and the outlet 19 of water-in lay respectively at the both sides of annular cloth water cavity, and both line angles are 180 °.
See Fig. 4, also install automatic detection components in described bed expansion district 2, described automatic detection components comprises data acquisition module, radio-frequency guide-admission object-position switch and water pump 10 control module, radio-frequency guide-admission object-position switch is installed on the below of material sucking pipes 8, the signal output part of radio-frequency guide-admission object-position switch is connected with water pump 10 control module, radio-frequency guide-admission object-position switch detects filtrate 7 height in bed expansion district 2 in real time by data acquisition module and sends to water pump 10 control module, filtrate 7 setting height is stored in described water pump 10 control module, after water pump 10 control module receives filtrate 7 height of radio-frequency guide-admission object-position switch transmission, itself and filtrate 7 setting height are compared, if filtrate 7 is highly greater than filtrate 7 setting height, then water pump 10 control module starts water pump 10.
Described suspended substance settling region 3 is positioned at the top of self-stip assembly, self-stip components apart suspended substance out reaches suspended substance settling region 3 behind bed expansion district 2, described suspended substance settling region 3 comprises precipitation cavity, ring baffle 15 is provided with in precipitation cavity, described ring baffle 15 is positioned at exit, bed expansion district 2, ring baffle 15 forms downward runner with the outer wall in bed expansion district 2, annular settling region 16 is provided with in the exit of described downward runner, annular settling region 16 has the sewage draining exit 17 for discharging suspended substance, described annular settling region 16 and flow passage upwards, water outlet 18 is provided with in the end of runner upwards.
Device height overall 1.4m of the present invention, the high 0.5m in upper part suspended substance settling region 3, diameter is 0.65m, and the high 0.9m in lower part bed expansion district 2, diameter is 0.4m.Put in a device diameter be the granulated glass sphere of 0.3mm as filtrate 7, design bed expansion rate 50%.Add the granulated glass sphere of the maturation of biofilm of former filtrate 10% volume, now bed elemental height is 0.55m, and when the apparatus is operative, bed expansion height is to about 0.8m.Suction strainer material 7 equipment is placed in filtrate 7 top of expansion, is namely highly 0.8m place.One radio-frequency guide-admission object-position switch is housed in its lower section.
The flooding velocity of device of the present invention is 5m
3/ h, tangentially enters annular cloth water cavity 5 by water-in 6, and the annular water distribution gap annularly bottom cloth water cavity enters this device, and current through bed expansion district 2 and annular settling region 16, finally flow out this device by water outlet 18 successively.Because territory, annular settling region 16 volume becomes suddenly large, therefore flow velocity slows down, and due to the effect of ring baffle 15, the particulate matter in waste water can be precipitated.Now the expansion height of bed is about 0.8m, in fluidized bioreactor biofilm process, water pump 10 is regularly opened automatically, design and opened 5 minutes every 1 hour, constantly mixed with the filtrate 7 of bottom by the filtrate 7 that top layer is inoculated, in the mutual collision of filtrate 7, mature microorganism can be attached to new filtrate 7 surface, and then accelerate breeding and the growth of microorganism, significantly can shorten the start time of biological filter.After biological filter biofilm maturation, start module control system, when bed expansion high level expansion is to 0.8m place, automatic startup water pump 10, the filtrate 7 on top layer is pumped into and first pumps into mixing tank, in annular cloth water cavity 5 again bottom access to plant, and then control the expansion height of bed, efficient and stable during to maintain this plant running.
For the cultivating wastewater purification of turbot circulating water culture system, cultivation water water temperature is 18 DEG C, ammonia nitrogen 0.65mg/L, nitrite 0.14mg/L, COD15mg/L, dissolved oxygen 6.95mg/L.Using this device as the Biofiltration apparatus of system, take flow as 5m
3/ h enters this device, and run this device after 15 days, its filter material surface color obviously deepens, and sweeps electron microscopic observation by retouching, and filter material surface has abundant microorganic adhesion, and now water outlet nitrite nitrogen concentration is significantly lower than water inlet, and the success of device biofilm is described.After this device successfully starts, the monitoring test of 2 months shows continuously, and bed height is stable at 0.8m place always, and internal flow state is good, and filtrate expands evenly.By scanning electron microscopic observation, the average organism film thickness of filtrate is 0.05mm, and the matrix mass transfer effect in the microorganism of this thickness filter material surface and water is better, and microorganism growth is good.The average ammonia nitrogen concentration 0.22mg/L of water outlet, average removal rate 66.2%; Average nitrite concentration 0.007mg/L, average removal rate 95%; Average COD concentration 7mg/L, average removal rate 53.3%.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (6)
1. for a self-stip fluidized bed bio filtration unit for sea farming, comprise cylindrical shell, it is characterized in that: be provided with bed expansion district and suspended substance settling region in the inside of described cylindrical shell;
The bottom in described bed expansion district is provided with the annular cloth water cavity for intaking, the annular water distribution gap be communicated with bed expansion district is provided with in the bottom of described annular cloth water cavity, filtrate is filled with in bed expansion district, the top in described bed expansion district is provided with self-stip assembly, described self-stip assembly comprises material sucking pipes, transfer lime, water pump and mixing device, described material sucking pipes is for sucking filtrate, material sucking pipes is communicated with water pump by transfer lime, after the suspended substance of impeller to filter material surface of described water pump inside is removed for the first time, again described filtrate is imported in mixing device, spiral blade is provided with in described mixing device, it is for carrying out secondary removal to the suspended substance of filter material surface, the outlet of described mixing device is communicated with annular cloth water cavity, filtrate after cleaning reenters bed expansion district,
Also install automatic detection components in described bed expansion district, described automatic detection components comprises data acquisition module, radio-frequency guide-admission object-position switch and water pump control modules; Radio-frequency guide-admission object-position switch is installed on the below of material sucking pipes, the signal output part of radio-frequency guide-admission object-position switch is connected with water pump control modules, radio-frequency guide-admission object-position switch detects filtrate height in bed expansion district in real time by data acquisition module and sends to water pump control modules, filtrate setting height is stored in described water pump control modules, after water pump control modules receives the filtrate height of radio-frequency guide-admission object-position switch transmission, itself and filtrate setting height are compared, if filtrate height is greater than filtrate setting height, then water pump control modules starts water pump;
Described suspended substance settling region is positioned at the top of self-stip assembly, self-stip components apart suspended substance out reaches suspended substance settling region behind bed expansion district, described suspended substance settling region comprises precipitation cavity, ring baffle is provided with in precipitation cavity, described ring baffle is positioned at exit, bed expansion district, the outer wall in ring baffle and bed expansion district forms downward runner, annular settling region is provided with in the exit of described downward runner, annular settling region has the sewage draining exit for discharging suspended substance, described annular settling region and flow passage upwards, water outlet is provided with in the end of runner upwards.
2. the self-stip fluidized bed bio filtration unit for sea farming according to claim 1, it is characterized in that: be provided with annular cloth water cavity in the outer side wall bottom described bed expansion district, the water inlet direction of described water-in is identical with the tangential direction of annular cloth water cavity; The annular water distribution gap of current bottom annular cloth water cavity enters bed expansion district, produces strong rotation upwelling under the effect of taper water distribution board, and then drives the upwards expansion of filtrate.
3. the self-stip fluidized bed bio filtration unit for sea farming according to claim 1, it is characterized in that: described material sucking pipes comprises the acrylic cylinder that is positioned at mid-way and radially distributes and the some acrylic pipes be communicated with described acrylic cylinder, leave gap in the bottom of described some acrylic pipes, described gap is for sucking filtrate.
4. the self-stip fluidized bed bio filtration unit for sea farming according to claim 1, is characterized in that: described filtrate adopts diameter range to be the spherical glass beads of 0.2-0.3mm.
5. the self-stip fluidized bed bio filtration unit for sea farming according to claim 1, it is characterized in that: described water pump adopts timing mode, water pump is after water pump control modules provides signal enabling, computing time, when after arrival setting-up time, water pump control modules controls water pump and quits work, if now filtrate height is still higher than setting height, then continue the water pump action of next time period, if filtrate height is lower than setting height, then wait for that control signal starts again next time.
6. the self-stip fluidized bed bio filtration unit for sea farming according to claim 2, is characterized in that: the outlet of described mixing device arrives taper water distribution board through annular cloth water cavity.The outlet of described mixing device and the outlet of fluidized bed bio filtration unit water-in lay respectively at the both sides of annular cloth water cavity, and both line angles are 180 °.
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| CN106219738A (en) * | 2016-09-18 | 2016-12-14 | 中国水产科学研究院渔业机械仪器研究所 | Filler and biomembrane cultural method thereof for fluidized bioreactor |
| CN106587333A (en) * | 2017-01-04 | 2017-04-26 | 张家港纽艾农业科技有限公司 | Expanded bed bioreactor |
| CN106746344A (en) * | 2017-01-04 | 2017-05-31 | 张家港纽艾农业科技有限公司 | Fish and vegetable symbiotic system |
| CN108117233A (en) * | 2017-12-15 | 2018-06-05 | 中国水产科学研究院渔业机械仪器研究所 | A kind of integrated water treatment equipment for sturgeon cultivation |
| CN108164081A (en) * | 2016-12-07 | 2018-06-15 | 北京有色金属研究总院 | A kind of lead-zinc smelting waste acid purifying treatment method |
| CN113666524A (en) * | 2021-09-03 | 2021-11-19 | 天津市政工程设计研究总院有限公司 | Two-phase adsorption tank for activated coke adsorption process |
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| CN113666524B (en) * | 2021-09-03 | 2022-12-09 | 天津市政工程设计研究总院有限公司 | Two-phase adsorption tank for activated coke adsorption process |
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