CN103864189B - Device and method for improving removal rate of offshore algae bloom by utilizing modified clay powder - Google Patents
Device and method for improving removal rate of offshore algae bloom by utilizing modified clay powder Download PDFInfo
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- CN103864189B CN103864189B CN201410112649.2A CN201410112649A CN103864189B CN 103864189 B CN103864189 B CN 103864189B CN 201410112649 A CN201410112649 A CN 201410112649A CN 103864189 B CN103864189 B CN 103864189B
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Abstract
The invention belongs to the technical field of control and government of harmful algae bloom in seawater, and specifically relates to a device and a method for improving a removal rate of offshore algae bloom by utilizing modified clay powder. The device comprises a feeding part, a material mixing part, a pipeline part and a stirrer, wherein the material mixing part and the stirrer are arranged on a boat body; the material mixing part comprises a mixing cavity and a suspending device, wherein a feeding hole and a discharging hole are respectively formed at the upper end and the lower end of the mixing cavity; a feeding part is arranged on the feeding hole; the discharging hole is connected with the stirrer by the pipeline part; the clay or modified clay solid powder enters the mixing cavity from the feeding part, is floated under action of the suspending device; the floated clay or modified clay solid powder is carried by gas flow and enters the stirrer by the pipeline, is mixed with the seawater by virtue of stirring of the stirrer, and finally exhausted into the sea by the stirrer to generate flocculation with the harmful algae bloom, so that the harmful algae bloom organisms in seawater are removed. The device and the method disclosed by the invention can improve removal efficiency of seawater-prepared modified clay during site application, are not high in cost and are simple to operate.
Description
Technical field
The invention belongs to the technical field of the Control and treatment of harmful algal bloom in seawater, specifically a kind of device and method utilizing clay or modified clay powder to improve coastal waters algal tufa clearance.
Background technology
Harmful algal bloom refers under certain environmental conditions, planktonic microalgae in ocean, protozoon or bacterium etc. are sudden chain type propagation and gathering at short notice, and the disastrous marine ecology unusual phenomenon of the Marine ecosystems havoc caused, water colour change.In recent years, frequency and the intensity of harmful algal bloom outburst constantly increase, and the harm that harmful algal bloom brings Marine ecosystems health, aquaculture and tourism is also increasing.And the emergency disposal of harmful algal bloom can alleviate these losses effectively, particularly to some culture zones, nursery garden, view and functional water body, the control of research harmful algal bloom just seems particularly necessary.
At present, the method of harmful algal bloom control mainly contains chemical method, Physical, biological process and flocculence, wherein utilizing modified clay to administer harmful algal bloom is a kind of effective means, also may be the method being uniquely able to large-scale application at present, it be subject to the favor of people because cost is low, source wide, efficiency is high, it is little to pollute.The cardinal principle of this method effect utilizes the throwing out of clay particle and harmful algal bloom biology by biological for harmful algal bloom from water body surface settlement to bottom.
At present, in the process that harmful algal bloom is eliminated, toward large marine sprinkling is the aqeous suspension of clay.This needs to configure a large amount of clay suspensions, is most economical selection seemingly from large marine direct use seawater.Use fresh water is prepared, and fresh water dosage is large, travels to and fro between the control progress that breakout of red tide district and harbour not only affect harmful algal bloom, also significantly increases cost.But seawater easily causes self flocculation of modified clay suspension, affects removal effect.The process using seawater preparation modified clay suspension to remove harmful algal bloom can divide two stages of work to study: one is use seawater preparation modified clay suspension, in this process easily there is the flocculation of self in modified clay, and this is because ionic strength high in seawater, ionic species and the factor such as concentration, pH cause; Another process be modified clay spraying suspension to red tide region, the flco that first process is formed again with interations among algae, diauxic growth forms new flco.First process clay self flocculation is larger on the removal impact of modified clay on harmful algal bloom.In research in the past, or seawater is not processed, directly use seawater, or be conceived to how to process seawater, himself flocculating degree when using seawater preparation modified clay to reduce.But during application, the requirement of seawater is large at the scene, process seawater cost is higher.The ionic strength of seawater feature that is high, that easily cause modified clay to flocculate can be used for improving modified clay to the removal efficiency of harmful algal bloom.
Summary of the invention
To achieve these goals, the object of the present invention is to provide a kind of device and method utilizing clay or modified clay powder to improve coastal waters algal tufa clearance.When this device and method can improve rig-site utilization, modified clay is to the removal efficiency of algal tufa biology, and cost is not high, simple to operate.
To achieve these goals, the present invention is by the following technical solutions:
A kind of device utilizing clay or modified clay powder to improve coastal waters algal tufa clearance, comprise feeding part, batch mixing part, pipe section and agitator, wherein batch mixing part and agitator are all installed on hull, described batch mixing part comprises mixing chamber and is arranged at the levitation device in mixing chamber, the top and bottom of described mixing chamber are respectively equipped with opening for feed and discharge port, described opening for feed is provided with feeding part, described discharge port is connected with agitator by pipe section, clay or modified clay pressed powder enter in mixing chamber by feeding part, and by floating under the effect of described levitation device, floating clay or modified clay pressed powder are carried by air-flow and enter in agitator by pipe section, and pass through stirring and the sea water mixing of agitator, arrange into flocculating with harmful algal bloom with the clay of sea water mixing or modified clay particle in the sea by agitator, thus the harmful algal bloom biology in removal seawater.
The bottom of described mixing chamber is provided with slag-drip opening, and corresponding with described slag-drip opening is provided with examination and repair system, is provided with first tightness system that can open or close slag-drip opening between described slag-drip opening and examination and repair system.Described examination and repair system comprises the first groove and is arranged at the first worm conveyor in groove, and described first tightness system is the first steel plate.
Described levitation device comprises runner, rotating shaft, fan sheet and the first drive unit, its shaft is horizontally placed in mixing chamber and two ends are rotatably installed on mixing chamber, one end of described rotating shaft passes mixing chamber and is connected with the first drive unit, described rotaring wheeling sleeve is loaded in rotating shaft, the excircle of runner is circumferentially provided with multiple fan sheet.
Described feeding part comprises feeder top and feeder bottom, and wherein feeder top is inverted truncated cone-shaped, and be provided with sieve plate in described feeder bottom, the below of described sieve plate is provided with the dividing plate preventing pressed powder from spraying in mixing chamber.
Described sieve plate comprises the upper sieve plate of upper and lower setting and lower sieve plate, and the sieve aperture on described upper sieve plate and lower sieve plate is crisscross arranged, and described dividing plate is two and is arranged at the inwall both sides of feeder bottom respectively to having a down dip.
Described agitator comprises agitator outer wall, the second drive unit, internal screw rotor and external spiral rotor, wherein internal screw rotor and external spiral rotor coaxial are arranged at the inside of agitator outer wall and are all connected with the second drive unit, described second drive unit drives internal screw rotor and external spiral rotor coaxial to rotate, and the upper end of described agitator outer wall is provided with the agitator opening for feed that is communicated with pipe section and sidewall and bottom are equipped with multiple water hole.
Described internal screw rotor comprises live spindle, water screw and pre-dispersing device, wherein live spindle one end is rotatably installed in the upper end of agitator outer wall and is connected with the second drive unit, the other end to be inserted in agitator outer wall and to be provided with pre-dispersing device vertically, and described water screw is arranged at the end of the live spindle the other end; Described external spiral rotor comprises metal frame and multiple flight, described metal frame is connected on live spindle, metal frame is distributed with multiple flight, described water screw and pre-dispersing device lay respectively at outside and the inside of metal frame, and described second drive unit drives metal frame to rotate together in company with live spindle.
Described pipe section comprises pipeline, joint flange, gas blower and the second tightness system, wherein be provided with the second tightness system for adjusting described discharge port size between pipeline and the discharge port of mixing chamber, the corner of described pipeline is connected by joint flange and arranges the gas blower for preventing clay or the sedimentation in pipeline of modified clay particle in corner.
A kind of method utilizing described device to remove harmful algal bloom in seawater: utilize described device directly to spray clay or modified clay pressed powder below the water surface in seawater, by means of the bidirectional adverse current effect that the strength of air-flow and the mechanical stirring of end agitator of carrying pressed powder are formed, clay or modified clay pressed powder is made fully to disperse in the seawater and mix, under the condition of high ionic strength in the seawater, dispersion and in mixed clay particle and seawater harmful algal bloom biology flocculate, thus remove the harmful algal bloom biology in seawater.
Advantage of the present invention and beneficial effect are:
1. the present invention can to overcome when using seawater preparation modified clay suspension its self flocculation, and the impact on the removal efficiency of harmful algal bloom biology when reducing large-scale application in seawater, improves removal efficiency.The method can increase depth of interaction by stirring action, does not especially assemble on top layer some but is distributed in the algal tufa biology of whole coastal waters, as brown damp algae, can improve removal efficiency, improve regulation effect.
2. these unfavorable factors such as ionic strength high in seawater in traditional method and kind are changed into the favorable factor promoting flocculation by the present invention, improve removal efficiency.
3. small volume shared by device of the present invention, can place multiple stage aboard ship, can save space limited on ship, reduces the quantity using ship.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the connection schematic diagram of pipeline corner in the present invention;
Fig. 5 is the structural representation of agitator in the present invention;
Fig. 6 utilizes modified clay pressed powder and conventional wet to the removal efficiency comparison diagram of Prorocentrum donghaiense algal tufa;
Fig. 7 utilizes modified clay pressed powder and conventional wet to the removal efficiency comparison diagram of phaeocystis globosa algal tufa.
Wherein: 1 is feeder upper part, 2 is feeder lower part, 301 is upper sieve plate, 302 is lower sieve plate, 4 is mixing chamber, 5 is runner, 6 is baffle plate, 7 is the first steel plate, 8 is anchor, 901 is the first worm conveyor, 902 is the second worm conveyor, 10 is the second steel plate, 11 is pipeline, 12 is the 3rd steel plate, 13 is pipeline transitional zone, 14 is switch, 15 is fan sheet, 16 is joint flange, 17 is gas blower, 18 is the first groove, 19 is agitator opening for feed, 20 is agitator outer wall, 21 is water hole, 22 is the second drive unit, 23 is water screw, 24 is pre-dispersing device, 25 is metal frame, 26 is live spindle, M is the direction of air-flow, N is the direction of current.
Embodiment
As Figure 1-3, a kind of device utilizing clay or modified clay powder to improve coastal waters algal tufa clearance in the present invention, it comprises feeding part, batch mixing part, pipe section and agitator, wherein batch mixing part and agitator are all installed on hull, the levitation device that described batch mixing part comprises mixing chamber 4 and is arranged in mixing chamber 4, the top and bottom of described mixing chamber 4 are respectively equipped with opening for feed and discharge port, described opening for feed is provided with feeding part, described discharge port is connected with agitator by pipe section, clay or modified clay pressed powder enter in mixing chamber 4 by feeding part, and by the effect low suspension of described levitation device, the clay that suspension is got up or modified clay pressed powder are carried by air-flow and enter in agitator by pipe section, and pass through stirring and the sea water mixing of agitator, arrange into flocculating with harmful algal bloom with the clay of sea water mixing or modified clay particle in the sea by agitator, thus the harmful algal bloom biology in removal seawater.
The bottom of described mixing chamber 4 is provided with slag-drip opening, and corresponding with described slag-drip opening is provided with examination and repair system, is provided with first tightness system that can open or close slag-drip opening between described slag-drip opening and examination and repair system, and described first tightness system is the first steel plate 7.The first worm conveyor 901 that described examination and repair system comprises the first groove 18 and is arranged in groove, accumulates in the macrobead modified clay of mixing chamber 4 bottom, is discharged by examination and repair system for not suspending in batch mixing mixing chamber 4.Pulled open by first steel plate 7, this part residue, by the first groove 18 of being entered by mixing chamber 4 below first steel plate 7, outputs to marine greatly by the first worm conveyor 901 in the first groove 18 by residue.In order to the residue exposing to the first groove 18 outside is got rid of clean, near examination and repair system, auxiliary repair system is set, described auxiliary repair system comprises the second groove, the second worm conveyor 902 and the second steel plate 10, wherein the second worm conveyor 902 is arranged in the second groove, the top of described second groove is provided with the second steel plate 10, opens the second groove by lifting the second steel plate 10.
Described batch mixing part is installed with on hull by fixed part, the plane steel plate that described fixed part is connected with foot-supporting frame by four metal foot-supporting frames 8 forms, the top of metal foot-supporting frame 8 is linked together by the mixing chamber 4 of screw and batch mixing part, and below is linked together by screw or electric welding and hull.
Described levitation device comprises runner 5, rotating shaft, fan sheet 15 and the first drive unit, and its shaft is horizontally placed in mixing chamber 4 that shape is sub-circular and two ends are rotatably installed on mixing chamber 4, and the diameter of mixing chamber 4 is 1.5m-2m.One end of described rotating shaft is passed mixing chamber 4 and is connected with the first drive unit by wire belt, and described first drive unit adopts electric motor.Described runner 5 is set in rotating shaft, and the excircle of runner 5 is circumferentially provided with 6-10 sheet fan sheet 15, the length of each fan sheet 15 is between 30-40cm.The rotation of electric motor drives the rotation of runner 5, and driven by rotating wheel fan blades 15 is rotated, thus causes modified clay powder to suspend in the air of mixing chamber 4.
Described feeding part comprises feeder top 1 and feeder bottom 2, and wherein feeder top 1 is inverted truncated cone-shaped (namely up big and down small), and the upper limb diameter of round platform is 60cm-100cm, and lower rim diameter is 30cm-45cm.Be provided with the upper sieve plate 301 of upper and lower layout and lower sieve plate 302 in described feeder bottom 2, the distance between upper sieve plate 301 and lower sieve plate 302 is 15-20cm.Described upper sieve plate 301 and lower sieve plate 302 have the circular hole of different pore size and quantity, the aperture of upper sieve plate 301 is 2-3cm, and the aperture of lower sieve plate 302 is 1-2cm, by adjusting different upper sieve plates 301 and lower sieve plate 302, just can control the speed of feeding in raw material.Sieve aperture on described upper sieve plate 301 and lower sieve plate 302 is crisscross arranged, and the circular hole on namely two-layer is up and down not overlapping in vertical direction, solid clay dust can be prevented from the spilling mixing chamber 4 time reinforced like this.The below of described sieve plate is provided with the dividing plate 6 preventing pressed powder from ejection in mixing chamber 4, and described dividing plate 6 is two and is arranged at the inwall both sides of feeder bottom 2 respectively to having a down dip.
As shown in Figure 4, described pipe section comprises pipeline 11, joint flange 16, gas blower 17 and the second tightness system, wherein pipeline 11 to be fixed on hull and inner wall smooth, the end of pipeline 11 is tangent with the discharge port of mixing chamber 4 by pipeline transitional zone 13, and pipeline 11 is 10-15cm heavy caliber steel-wire carcass flexible pipe.The discharge port of mixing chamber 4 is provided with the second tightness system for adjusting described discharge port size, and described second tightness system is that the 3rd steel plate the 12, three steel plate 12 is of a size of 30cm × 50cm.Mixing chamber 4 is provided with the slot fixing the 3rd steel plate 12 specially, and the 3rd steel plate 12 can stretching back and forth in slot, can be adjusted the size of the discharge port of mixing chamber 4 by the 3rd steel plate 12 that stretches.Each pipeline 11 is connected by the joint flange 16 that transition is mild in corner.Install powerful gas blower 17 additional in each pipeline 11 corner, gas blower 17 can prevent clay or the sedimentation of modified clay particle in pipeline 11, also can promote the mixing of seawater and modified clay powder after entering seawater.
As shown in Figure 5, described agitator is output section, comprise agitator outer wall 20, second drive unit 22, internal screw rotor and external spiral rotor, wherein internal screw rotor and external spiral rotor coaxial are arranged at the inside of agitator outer wall 20 and are all connected with the second drive unit 22 (electric motor or diesel engine etc.), described second drive unit 22 drives internal screw rotor and external spiral rotor coaxial to rotate, and the upper end of described agitator outer wall 20 is provided with the agitator opening for feed 19 that is communicated with pipe section and sidewall and bottom are equipped with multiple water hole 21.Described internal screw rotor comprises live spindle 26, water screw 23 and pre-dispersing device 24, wherein live spindle 26 one end is rotatably installed in the upper end of agitator outer wall 20 and is connected with the second drive unit, the other end to be inserted in agitator outer wall 20 and to be provided with pre-dispersing device 24 vertically, and described pre-dispersing device 24 is multiple water screw or reinforcing bar.Described water screw 23 is arranged at the end of live spindle 26 the other end, and water screw 23 can adopt reinforcing bar; Described external spiral rotor comprises metal frame 25 and multiple flight, and described metal frame 25 adopts reinforcing bar material.Described metal frame 25 is connected on live spindle 26, metal frame 25 is distributed with multiple flight, described water screw 23 and pre-dispersing device 24 lay respectively at outside and the inside of metal frame 25, and described second drive unit drives metal frame 25 to rotate together in company with live spindle 26.Air-flow with clay or modified clay powder is entered in metal frame 25 by agitator opening for feed 19, and is imported on the pre-dispersing device 24 that is connected with rotating spindle 26, carries out pre-mixing.Liquid after pre-mixing is fully stirred by the external spiral rotor in agitator when leaving metal frame 25, is then discharged in agitator by water hole 21 and enters breakout of red tide region.The direction N of the current produced when helical rotor rotates is contrary with the direction M of air-flow, and whole agitator inside is bidirectional adverse current device, is conducive to mixing.
Working process of the present invention is:
During use, respectively this apparatus main body, pipe section and agitator are fixed on hull, by switch 14, the 3rd steel plate 12 will be inserted into the end, the discharge port of mixing chamber 4 is closed.Clay or modified clay pressed powder are added in feed system, clay or modified clay enter in the mixing chamber 4 of batch mixing part by upper sieve plate 301 and lower sieve plate 302, under the effect of the fan sheet 15 of batch mixing part, solid powder suspension is in the air of mixing chamber 4.When concentration is higher, open the discharge port of mixing chamber 4 by lifting the 3rd steel plate 12, simultaneously the gas blower 17 of opening conduits corner.The clay that suspension is got up or modified clay pressed powder are carried by air-flow and enter pipeline 11, the clay or the modified clay powder that enter pipeline 11 enter seawater under the booster action of pipeline corner gas blower 17, mix through bilateral flow effect in agitator, modified clay is distributed to comparatively large regions by the current produced after mixing, and throwing out occurs.
Described device is utilized to remove the method for harmful algal bloom in seawater:
The device in the present invention is utilized directly below the water surface in seawater, to spray clay or modified clay pressed powder, by means of the bidirectional adverse current effect that the strength of air-flow and the mechanical stirring of end agitator of carrying pressed powder are formed, clay or modified clay pressed powder is made fully to disperse in the seawater and mix, under the condition of high ionic strength etc. in the seawater, in clay particle and seawater, harmful algal bloom biology flocculates, thus removes the harmful algal bloom biology in seawater.
During general algal tufa eruption point of biology, be mostly gathered in the top layer of water body, but also have some algal tufas,
As brown damp algae, algal tufa biology is not concentrate on top layer, but is distributed in whole coastal waters, and the method, when practical application, can increase depth of interaction, improves algal tufa biological, as the removal efficiency of brown damp algae.
Embodiment
In laboratory conditions, modified clay pressed powder is utilized to remove Prorocentrum donghaiense (Prorocentrumdonghaiense) and phaeocystis globosa (Phaeoecystis globosa), compared with wet method, the flco utilizing modified clay pressed powder removal harmful algal bloom biochron clay-frustule to be formed is larger, the settling velocity of flco is faster, and after removing, the transparency of water body is higher.Bring up to 32% (0.5g/L) to the removal efficiency of Prorocentrum donghaiense by 18% of wet method, 25% brings up to 41% (1g/L), and 61% brings up to 82% (5g/L), as shown in Figure 6.By 8%, 30% (0.25g/L) is brought up to the removal efficiency of phaeocystis globosa, brings up to 51% (0.5g/L) by 18%, bring up to 78% (1g/L) by 38%, as shown in Figure 7.
To the ratio not requirement of clay or modified clay and air when the present invention uses, but suitably can improve the ratio of air.All can arrange this device at the front and rear of hull, the mixture of the pressed powder that fore-body discharge port is discharged and seawater, the device after hull is through out-of-date, also can spray again, play stirring action, there is twice sprinkling and married operation at same position, can removal efficiency be improved.The present invention can use clay or modified clay, the clay of use or modified clay require that chiltern will be lacked, and particle diameter is little as much as possible close to the diameter of algal tufa biomass cells, to strengthen suspending power and the flocculation ability of clay or modified clay.Therefore, should be noted that when selecting the kind of clay or modified clay and concentration.
Claims (9)
1. the device utilizing clay or modified clay powder to improve coastal waters algal tufa clearance, it is characterized in that: comprise feeding part, batch mixing part, pipe section and agitator, wherein batch mixing part and agitator are all installed on hull, the levitation device that described batch mixing part comprises mixing chamber (4) and is arranged in mixing chamber (4), the top and bottom of described mixing chamber (4) are respectively equipped with opening for feed and discharge port, described opening for feed is provided with feeding part, described discharge port is connected with agitator by pipe section, clay or modified clay pressed powder enter in mixing chamber (4) by feeding part, and it is floating under the effect of described levitation device, floating clay or modified clay pressed powder are carried by air-flow and enter in agitator by pipe section, and pass through stirring and the sea water mixing of agitator, arrange into flocculating with harmful algal bloom with the clay of sea water mixing or modified clay particle in the sea by agitator, thus the harmful algal bloom biology in removal seawater.
2. by the device utilizing clay or modified clay powder to improve coastal waters algal tufa clearance according to claim 1, it is characterized in that: the bottom of described mixing chamber (4) is provided with slag-drip opening, corresponding with described slag-drip opening is provided with examination and repair system, is provided with first tightness system that can open or close slag-drip opening between described slag-drip opening and examination and repair system.
3. by the device utilizing clay or modified clay powder to improve coastal waters algal tufa clearance according to claim 2, it is characterized in that: described examination and repair system comprises the first groove (18) and is arranged at the first worm conveyor (901) in groove, and described first tightness system is the first steel plate (7).
4. by the device utilizing clay or modified clay powder to improve coastal waters algal tufa clearance according to claim 1, it is characterized in that: described levitation device comprises runner (5), rotating shaft, fan sheet (15) and the first drive unit, its shaft is horizontally placed in mixing chamber (4) and two ends are rotatably installed on mixing chamber (4), one end of described rotating shaft passes mixing chamber (4) and is connected with the first drive unit, described runner (5) is set in rotating shaft, the excircle of runner (5) is circumferentially provided with multiple fan sheet (15).
5. by the device utilizing clay or modified clay powder to improve coastal waters algal tufa clearance according to claim 1, it is characterized in that: described feeding part comprises feeder top (1) and feeder bottom (2), wherein feeder top (1) is inverted truncated cone-shaped, be provided with sieve plate in described feeder bottom (2), the below of described sieve plate is provided with the dividing plate (6) preventing pressed powder ejection in mixing chamber (4).
6. by the device utilizing clay or modified clay powder to improve coastal waters algal tufa clearance according to claim 5, it is characterized in that: described sieve plate comprises upper sieve plate (301) and the lower sieve plate (302) of upper and lower setting, sieve aperture on described upper sieve plate (301) and lower sieve plate (302) is crisscross arranged, and described dividing plate (6) is two and is arranged at the inwall both sides of feeder bottom (2) respectively to having a down dip.
7. by the device utilizing clay or modified clay powder to improve coastal waters algal tufa clearance according to claim 1, it is characterized in that: described agitator comprises agitator outer wall (20), second drive unit, internal screw rotor and external spiral rotor, wherein internal screw rotor and external spiral rotor coaxial are arranged at the inside of agitator outer wall (20), and be all connected with the second drive unit, described second drive unit drives internal screw rotor and external spiral rotor coaxial to rotate, the upper end of described agitator outer wall (20) is provided with the agitator opening for feed (19) be communicated with pipe section, and the sidewall of agitator outer wall (20) and bottom are equipped with multiple water hole (21),
Described internal screw rotor comprises live spindle (26), water screw (23) and pre-dispersing device (24), wherein live spindle (26) one end is rotatably installed in the upper end of agitator outer wall (20) and is connected with the second drive unit, the other end to be inserted in agitator outer wall (20) and to be provided with pre-dispersing device (24) vertically, and described water screw (23) is arranged at the end of live spindle (26) the other end; Described external spiral rotor comprises metal frame (25) and multiple flight, described metal frame (25) is connected on live spindle (26), (25) are distributed with multiple flight to metal frame, described water screw (23) and pre-dispersing device (24) lay respectively at outside and the inside of metal frame (25), and described second drive unit drives metal frame (25) to rotate together in company with live spindle (26).
8. by the device utilizing clay or modified clay powder to improve coastal waters algal tufa clearance according to claim 1, it is characterized in that: described pipe section comprises pipeline (11), joint flange (16), gas blower (17) and the second tightness system, the second tightness system for adjusting described discharge port size is provided with between the discharge port of wherein pipeline (11) and mixing chamber (4), the corner of described pipeline (11) is connected by joint flange (16), and the gas blower (17) arranged in corner for preventing clay or the sedimentation in pipeline of modified clay particle.
9. the method utilizing device described in any one of claim 1-8 to remove harmful algal bloom in seawater, it is characterized in that: utilize described device directly below the water surface in seawater, to spray clay or modified clay pressed powder, the bidirectional adverse current effect jointly formed by the strength of air-flow and the mechanical stirring of end agitator of carrying pressed powder, clay or modified clay pressed powder is made fully to disperse in the seawater and mix, under the condition of high ionic strength in the seawater, dispersion and in mixed clay particle and seawater harmful algal bloom biology flocculate, thus the harmful algal bloom biology in removal seawater.
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| CN104211151B (en) * | 2014-09-02 | 2017-09-22 | 青岛科技大学 | A kind of red tide control is modified the flusher and spray method of clay |
| CN105000648B (en) * | 2015-08-07 | 2017-03-08 | 青岛科技大学 | A kind of integral type clay flusher for administering red tide |
| CN106745381B (en) * | 2016-12-15 | 2020-06-05 | 中国科学院海洋研究所 | Device and method for treating red tide by using modified clay |
| WO2022193279A1 (en) * | 2021-03-19 | 2022-09-22 | 唐山哈船科技有限公司 | Cleaning device for treating marine red tide biological waste |
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| CN102874934A (en) * | 2012-10-29 | 2013-01-16 | 武汉昌宝环保工程有限公司 | Technology for direct in-situ treatment and ecological restoration of polluted water body |
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