CN103864189A - 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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- CN103864189A CN103864189A CN201410112649.2A CN201410112649A CN103864189A CN 103864189 A CN103864189 A CN 103864189A CN 201410112649 A CN201410112649 A CN 201410112649A CN 103864189 A CN103864189 A CN 103864189A
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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 control of harmful algal bloom and the technical field of improvement in seawater, specifically a kind of device and method that utilizes modified clay powder to improve coastal waters algal tufa clearance.
Background technology
Harmful algal bloom refers under certain envrionment conditions, planktonic microalgae, protozoon or bacteriums etc. in ocean are sudden chain type propagation and gathering at short notice, and the disastrous marine ecology unusual phenomenon of the Marine ecosystems havoc causing, water colour variation.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, it is particularly necessary that the control of research harmful algal bloom just seems.
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 current unique method that is able to large-scale application, it be because of the favor that cost is low, source wide, efficiency is high, pollute the little people of being subject to.The cardinal principle of this method effect be utilize clay particle and harmful algal bloom biology throwing out by harmful algal bloom biology from water body surface settlement to bottom.
At present, in the process of eliminating at harmful algal bloom, toward large marine sprinkling is the aqeous suspension of clay.This need to configure a large amount of clay suspensions, is most economical selection seemingly from large marine direct use seawater.The preparation of use fresh water, fresh water dosage is large, and travelling to and fro between breakout of red tide district and harbour not only affects the control progress of harmful algal bloom, has also increased greatly cost.But seawater easily causes self flocculating of modified clay suspension, affects removal effect.Removing the process of harmful algal bloom with seawater preparation modified clay suspension can divide two stages of work to study: one is to use seawater preparation modified clay suspension, in this process easily there is the flocculation of self in modified clay, and this is because the factors such as ionic strength high in seawater, ionic species and concentration, pH cause; Another process is that modified clay suspension is sprayed onto red tide region, the flco that first process forms again with interations among algae, diauxic growth forms new flco.First process clay self flocculation is larger on the removal impact of harmful algal bloom on modified clay.In research in the past, or seawater is not processed, directly used seawater, or be conceived to how to process seawater, the flocculating degree of himself while using seawater preparation modified clay to reduce.But the requirement of seawater is large while application at the scene, process seawater cost higher.The ionic strength of seawater is high, easily cause that the feature of modified clay flocculation can be used for improving the removal efficiency of modified clay to 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 that utilizes modified clay powder to improve coastal waters algal tufa clearance.The removal efficiency of modified clay to algal tufa biology when this device and method can improve rig-site utilization, cost is not high, simple to operate.
To achieve these goals, the present invention is by the following technical solutions:
A kind of device that utilizes 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 are entered in mixing chamber by feeding part, and floating under effect by described levitation device, floating clay or modified clay pressed powder are carried by pipe section and are entered in agitator by air-flow, and by stirring and the sea water mixing of agitator, arranged into flocculating with harmful algal bloom in the sea by agitator with clay or the modified clay particle of sea water mixing, thereby the harmful algal bloom biology in removal seawater.
The bottom of described mixing chamber is provided with slag-drip opening, and corresponding with the described slag-drip opening examination and repair system that is provided with, 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 be arranged at the first worm conveyor in groove, and described the first enclosed appts 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, and on the excircle of runner, edge is circumferentially with multiple fan sheets.
Described feeding part comprises feeder top and feeder bottom, and wherein feeder top is inverted truncated cone-shaped, and described feeder is provided with sieve plate in bottom, and the below of described sieve plate is provided with and prevents the dividing plate of pressed powder from spraying in mixing chamber.
Described sieve plate comprises upper sieve plate and the lower sieve plate of upper and lower setting, and the sieve aperture on described upper sieve plate and lower sieve plate is crisscross arranged, and described dividing plate is two, and downward-sloping inwall both sides that are arranged at feeder bottom respectively.
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 be arranged at agitator outer wall inside, and be all connected with the second drive unit, described the 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 sidewall and bottom and is equipped with multiple water holes.
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 is inserted in agitator outer wall, is also provided with vertically pre-dispersing device, and described propeller 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, on metal frame, be distributed with multiple flights, described propeller and pre-dispersing device lay respectively at the outside and inner of metal frame, and described the 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 between pipeline and the discharge port of mixing chamber, be provided with the second tightness system for adjusting described discharge port size, the corner of described pipeline connects and is provided in corner preventing the gas blower of clay or the sedimentation in pipeline of modified clay particle by joint flange.
A kind of method of utilizing described device to remove harmful algal bloom in seawater: utilize described device directly to spray below clay or modified clay pressed powder toward the water surface in seawater, by means of carrying the strength of air-flow of pressed powder and the bidirectional adverse current effect that the mechanical stirring of end agitator forms, make clay or modified clay pressed powder fully disperse and mix in seawater, in seawater under the condition of high ionic strength, in dispersion mixed clay particle and seawater, harmful algal bloom is biological flocculates, thereby removes the harmful algal bloom biology in seawater.
Advantage of the present invention and beneficial effect are:
1. the present invention can overcome while using seawater preparation modified clay suspension its self flocculation, and the impact of the removal efficiency on harmful algal bloom biology while reducing large-scale application in seawater, improves removal efficiency.The method can increase depth of interaction by stirring action, especially some is not assembled on top layer but is distributed in the algal tufa biology of whole coastal waters, as brown damp algae, can improve removal efficiency, improves regulation effect.
2. the present invention changes into these unfavorable factors such as ionic strength and kind etc. high in seawater in traditional method the favorable factor that promotes flocculation, has improved removal efficiency.
3. the shared small volume of device of the present invention, can place many aboard ship, can save space limited on ship, reduces the quantity that uses 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 the removal efficiency comparison diagram of conventional wet to Prorocentrum donghaiense algal tufa;
Fig. 7 utilizes modified clay pressed powder and the removal efficiency comparison diagram of conventional wet to phaeocystis globosa algal tufa.
Wherein: 1 is part on feeder, 2 is part under feeder, 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 propeller, 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 that utilizes 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, described batch mixing part comprises mixing chamber 4 and is arranged at the levitation device 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 are entered in mixing chamber 4 by feeding part, and by the effect low suspension of described levitation device, clay or the modified clay pressed powder getting up that suspend carried by pipe section and entered in agitator by air-flow, and by stirring and the sea water mixing of agitator, arranged into flocculating with harmful algal bloom in the sea by agitator with clay or the modified clay particle of sea water mixing, thereby the harmful algal bloom biology in removal seawater.
The bottom of described mixing chamber 4 is provided with slag-drip opening, and corresponding with the described slag-drip opening examination and repair system that is provided with, 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 the first enclosed appts is the first steel plate 7.Described examination and repair system comprises the first groove 18 and is arranged at the first worm conveyor 901 in groove, accumulates in the macrobead modified clay of mixing chamber 4 bottoms for not suspending in batch mixing mixing chamber 4, is discharged by examination and repair system.The first steel plate 7 is pulled open, and residue, by being entered by mixing chamber 4 in the first groove 18 of the first steel plate 7 belows, outputs to this part residue marine greatly by the first worm conveyor 901 in the first groove 18.For the residue that exposes to the first groove 18 outsides 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 the 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 by fixed part install with hull on, 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 links together by the mixing chamber 4 of screw and batch mixing part, and below links 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 the mixing chamber 4 that is shaped as 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 passes mixing chamber 4 and is connected with the first drive unit by wire belt, and described the first drive unit adopts electric motor.Described runner 5 is set in rotating shaft, and on the excircle of runner 5, along being circumferentially 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 sheet 15 rotates, thereby causes that modified clay powder suspends 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 (up big and down small), and the upper limb diameter of round platform is 60cm-100cm, and lower rim diameter is 30cm-45cm.The upper sieve plate 301 and the lower sieve plate 302 that in described feeder bottom 2, are provided with upper and lower layout, the distance between upper sieve plate 301 and lower sieve plate 302 is 15-20cm.The circular hole on described upper sieve plate 301 and lower sieve plate 302 with different pore size and quantity, the aperture of upper sieve plate 301 is 2-3cm, the aperture of lower sieve plate 302 is 1-2cm, by adjusting different upper sieve plate 301 and lower sieve plate 302, just can control reinforced speed.Sieve aperture on described upper sieve plate 301 and lower sieve plate 302 is crisscross arranged, and upper and lower circular hole on two-layer is not overlapping in vertical direction, when reinforced like this, can prevent solid clay dust overflowing from mixing chamber 4.The below of described sieve plate is provided with and prevents that the dividing plate 6 of pressed powder from mixing chamber 4 interior ejections, described dividing plate 6 from being two, and downward-sloping inwall both sides that are arranged at feeder bottom 2 respectively.
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 is 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 skeleton flexible pipe.The discharge port of mixing chamber 4 is provided with the second tightness system for adjusting described discharge port size, and described the second tightness system is that the 3rd steel plate 12, the three steel plates 12 are of a size of 30cm × 50cm.On mixing chamber 4, be provided with the slot of fixing specially the 3rd steel plate 12, the 3rd steel plate 12 can be in slot stretching back and forth, can adjust by the 3rd steel plate 12 that stretches the size of the discharge port of mixing chamber 4.Each pipeline 11 is connected by the mild joint flange 16 of transition in corner.Install powerful gas blower 17 additional in each pipeline 11 corners, gas blower 17 can prevent clay or the sedimentation of modified clay particle in pipeline 11, enters the mixing that also can promote seawater and modified clay powder after seawater.
As shown in Figure 5, described agitator is output section, comprise agitator outer wall 20, the second drive unit 22, internal screw rotor and external spiral rotor, wherein internal screw rotor and external spiral rotor coaxial be arranged at agitator outer wall 20 inside, and be all connected with the second drive unit 22 (electric motor or diesel engine etc.), described the second drive unit 22 drives the rotation of internal screw rotor and external spiral rotor coaxial, 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 sidewall and bottom and is equipped with multiple water holes 21.Described internal screw rotor comprises live spindle 26, water screw 23 and pre-dispersing device 24, wherein live spindle 26 one end are rotatably installed in the upper end of agitator outer wall 20 and are connected with the second drive unit, the other end is inserted in agitator outer wall 20, is also provided with vertically pre-dispersing device 24, and described pre-dispersing device 24 is multiple propeller or reinforcing bar.Described propeller 23 is arranged at the end of live spindle 26 the other ends, and propeller 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, on metal frame 25, be distributed with multiple flights, described propeller 23 and pre-dispersing device 24 lay respectively at the outside and inner of metal frame 25, and described the 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 being connected with rotating spindle 26, carries out pre-mixing.Liquid after pre-mixing is fully stirred by the external spiral rotor in agitator in the time leaving metal frame 25, then in agitator, discharges and enter breakout of red tide region by water hole 21.The direction N of current producing 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 mix.
Working process of the present invention is:
When use, respectively this apparatus main body, pipe section and agitator are fixed on hull, will the 3rd steel plate 12 be inserted into the end of to by switch 14, 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.Clay or the modified clay pressed powder getting up that suspend carried and entered pipeline 11 by air-flow, the clay or the modified clay powder that enter pipeline 11 enter seawater under the booster action of pipeline corner gas blower 17, in agitator, mix through bilateral flow effect, modified clay is distributed to larger region by the current that produce after mixing, and throwing out occurs.
Utilize described device to remove the method for harmful algal bloom in seawater:
Utilize device in the present invention directly to spray below clay or modified clay pressed powder toward the water surface in seawater, by means of carrying the strength of air-flow of pressed powder and the bidirectional adverse current effect that the mechanical stirring of end agitator forms, make clay or modified clay pressed powder fully disperse and mix in seawater, in seawater under the condition of high ionic strength etc., in clay particle and seawater, harmful algal bloom is biological flocculates, thereby removes the harmful algal bloom biology in seawater.
When general algal tufa eruption point of biology, mostly be gathered in the top layer of water body, but also there are some algal tufas, as brown damp algae, algal tufa biology is not to concentrate on top layer, but is distributed in whole coastal waters, the method is in the time of practical application, can increase depth of interaction, improve to algal tufa biology, as the removal efficiency of brown damp algae.
Embodiment
Under laboratory condition, utilize modified clay pressed powder to remove Prorocentrum donghaiense (Prorocentrum donghaiense) and phaeocystis globosa (Phaeoecystis globosa), compared with wet method, the flco that utilizes modified clay pressed powder removal harmful algal bloom biochron clay-frustule to form is larger, the settling velocity of flco is faster, and after removing, the transparency of water body is higher.The removal efficiency of Prorocentrum donghaiense is brought up to 32% (0.5g/L) by 18% of wet method, and 25% brings up to 41% (1g/L), and 61% brings up to 82% (5g/L), as shown in Figure 6.The removal efficiency of phaeocystis globosa is brought up to 30% (0.25g/L) by 8%, bring up to 51% (0.5g/L) by 18%, bring up to 78% (1g/L) by 38%, as shown in Figure 7.
Not requirement of ratio to clay or modified clay and air when the present invention uses, but can suitably improve the ratio of air.Front and rear at hull all can arrange this device, the pressed powder that fore-body discharge port is discharged and the mixture of seawater, and the device after hull is through out-of-date, also can spray again, play stirring action, have twice sprinkling and married operation at same position, can improve removal efficiency.The present invention can use clay or modified clay, and the clay of use or modified clay require chiltern to lack, and particle diameter will approach the diameter of algal tufa biomass cells and as much as possible little, to strengthen suspending power and the flocculation ability of clay or modified clay.Therefore, in the time selecting the kind of clay or modified clay and concentration, should be noted that.
Claims (10)
1. a device that utilizes 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, described batch mixing part comprises mixing chamber (4) and is arranged at the levitation device 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 are entered in mixing chamber (4) by feeding part, and floating under effect by described levitation device, floating clay or modified clay pressed powder are carried by pipe section and are entered in agitator by air-flow, and by stirring and the sea water mixing of agitator, arranged into flocculating with harmful algal bloom in the sea by agitator with clay or the modified clay particle of sea water mixing, thereby the harmful algal bloom biology in removal seawater.
2. by the device that utilizes modified clay powder to improve coastal waters algal tufa clearance claimed in claim 1, it is characterized in that: the bottom of described mixing chamber (4) is provided with slag-drip opening, corresponding with the described slag-drip opening examination and repair system that is provided with, 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 that utilizes modified clay powder to improve coastal waters algal tufa clearance claimed in claim 2, it is characterized in that: described examination and repair system comprises the first groove (18) and be arranged at the first worm conveyor (901) in groove, described the first enclosed appts is the first steel plate (7).
4. by the device that utilizes modified clay powder to improve coastal waters algal tufa clearance claimed in 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, and on the excircle of runner (5), edge is circumferentially with multiple fan sheets (15).
5. by the device that utilizes modified clay powder to improve coastal waters algal tufa clearance claimed in 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, in described feeder bottom (2), be provided with sieve plate, the below of described sieve plate is provided with and prevents the dividing plate (6) of pressed powder from the interior ejection of mixing chamber (4).
6. by the device that utilizes modified clay powder to improve coastal waters algal tufa clearance claimed in 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 downward-sloping inwall both sides that are arranged at feeder bottom (2) respectively.
7. by the device that utilizes modified clay powder to improve coastal waters algal tufa clearance claimed in claim 1, it is characterized in that: described agitator comprises agitator outer wall (20), 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 (20), and be all connected with the second drive unit, described the second drive unit drives internal screw rotor and the rotation of external spiral rotor coaxial, the upper end of described agitator outer wall (20) is provided with the agitator opening for feed (19) being communicated with pipe section, and sidewall and bottom are equipped with multiple water holes (21).
8. by the device that utilizes modified clay powder to improve coastal waters algal tufa clearance claimed in claim 7, it is characterized in that: 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 is inserted in agitator outer wall (20), is also provided with vertically pre-dispersing device (24), and described propeller (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), metal frame is distributed with multiple flights on (25), described propeller (23) and pre-dispersing device (24) lay respectively at the outside and inner of metal frame (25), and described the second drive unit drives metal frame (25) to rotate together in company with live spindle (26).
9. by the device that utilizes modified clay powder to improve coastal waters algal tufa clearance claimed in claim 1, it is characterized in that: described pipe section comprises pipeline (11), joint flange (16), gas blower (17) and the second tightness system, wherein between pipeline (11) and the discharge port of mixing chamber (4), be provided with the second tightness system for adjusting described discharge port size, the corner of described pipeline (11) connects by joint flange (16), and be provided for preventing the gas blower (17) of clay or the sedimentation in pipeline of modified clay particle in corner.
10. a method of utilizing device described in claim 1-9 any one to remove harmful algal bloom in seawater, it is characterized in that: utilize described device directly to spray below clay or modified clay pressed powder toward the water surface in seawater, by means of carrying the strength of air-flow of pressed powder and the bidirectional adverse current effect that the mechanical stirring of end agitator forms, make clay or modified clay pressed powder fully disperse and mix in seawater, in seawater under the condition of high ionic strength, in dispersion mixed clay particle and seawater, harmful algal bloom is biological flocculates, thereby the harmful algal bloom biology in removal seawater.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104211151A (en) * | 2014-09-02 | 2014-12-17 | 青岛科技大学 | Spraying device of modified clay for control of red tide and spraying method |
| CN105000648A (en) * | 2015-08-07 | 2015-10-28 | 青岛科技大学 | Integrated clay spraying device for red tide treatment |
| EP3556733A4 (en) * | 2016-12-15 | 2020-07-08 | Institute of Oceanology Chinese Academy of Sciences | Device and method for controlling red tide by using modified clay |
| CN113195834A (en) * | 2021-03-19 | 2021-07-30 | 唐山哈船科技有限公司 | Cleaning device for treating marine red tide biological excrement |
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| 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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