CN101219850A - Technique for processing blue algae slurry with intracapsular dehydration technique - Google Patents
Technique for processing blue algae slurry with intracapsular dehydration technique Download PDFInfo
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- CN101219850A CN101219850A CNA200710066251XA CN200710066251A CN101219850A CN 101219850 A CN101219850 A CN 101219850A CN A200710066251X A CNA200710066251X A CN A200710066251XA CN 200710066251 A CN200710066251 A CN 200710066251A CN 101219850 A CN101219850 A CN 101219850A
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Abstract
The invention relates to a method in which water is separated from cyanobacteria pulp by using high speed shearing, homogeneous crushing and a spiral settlement centrifugal process so that the liquid phase cyanobacteria pulp is transformed to the solid cyanobacteria mud and at the same time the volume is greatly reduced. The invention belongs to the environmental protection device field. The invention, whihc is characterized in that: the cyanobacteria pulp to be processed by a water pump is absorbed into a homogeneous tank; after being processed by a homogenizer with high-speed shearing, the cyanobacteria pulp in the homogeneous tank is constantly cycled through a reflux pipe; the cyanobacteria capsule mass is broken and scattered as single cell suspension to form a homogeneous cyanobacteria pulp, which is discharged through a discharge valve in the lower part of the tank and flows into a separating pond; at the same time, the flocculant is added and after the homogeneous cyanobacteria pulp is mixed with the flocculant uniformly, the mixture is transferred to a spiral centrifugal separator through a feeding pump; the cyanobacteria residue is separated from the water and the solid phase cyanobacteria residue is discharged through a discharge outlet; the separated liquid water is reused through the pipe. The invention provides practical and matching comprehensive treatment method for lacking cyanobacteria water bloom treatment project and, solving the problem of hard transportation and treatment of the cyanobacteria pulp and improves the practicality of the comprehensive utilization of the cyanobacteria.
Description
Technical field: the present invention relates to a kind of high speed shear of utilizing, the homogeneous fragmentation, thus the moisture content that the screw settling centrifuging process is deviate from the blue algae slurry makes the liquid phase algae starch the algae mud that is transformed into solid phase, the method that the while volume significantly reduces.Belong to the environmental protection equipment field.
Technical background: nearly two during the last ten years, along with industrial or agricultural develops rapidly, population increase, urbanization is quickened, a large amount of unprocessed or enter rivers,lakes and seas without sanitary sewage and the industrial and agricultural production waste water effectively handled, make water surrounding be subjected to severe contamination, the eutrophication degree aggravation of many water bodys, cause that planktonic algae particularly produces a large amount of propagation of malicious Microcystis aeruginosa, forms a large amount of wawter blooms.The a large amount of bloom blue algaes that take place in lake are serious environment pollution, harm drinking-water water source on the one hand, has also brought great influence to view on the other hand.Pollution and eutrophication for the control lake are necessary the blue-green alga bloom of bulk deposition is effectively removed.Removing blue-green alga bloom has many kinds of methods, comprises physics, chemistry, biological, but can directly sweep off the lake surface blue-green alga bloom at present, and still physics method such as machinery salvaging of the method for not having an obvious negative effect.As adopting mechanical Refloatation method will produce a large amount of algae slurries, these algae slurries contain rich nutritive materials such as abundant water, nitrogen, phosphorus, and are very easily corrupt, distribute stench, and secondary pollution danger is arranged; And it is big to store occupation of land, the inconvenience transportation.No matter blue algae slurry handle to adopt press filtration, dewatering such as centrifugal in the past, its gained algae mud water ratio is between 80-90%, and the about 70-80% of algae slurry dehydration rate, and the press filtration method treatment time is long can only batch production.
Summary of the invention: the objective of the invention is to utilize dehydration technique processing in the capsule, the intercellular moisture of parcel in the blue-green algae blastophore is separated out; With flocculation agent solid phase particle is reunited again, then through the centrifugal moisture of sloughing of gravity settling, algae slurry dehydration rate is 95-90% (a untreated algae slurry water ratio about 97%), separating obtained algae mud water ratio is 60-75%, outward appearance is the mud cake shape, there is not flowability, thus the processing blue algae slurry with intracapsular dehydration technique that makes things convenient for the transportation of algae mud and utilize
For achieving the above object, the invention provides following technical scheme: a kind of technology of processing blue algae slurry with intracapsular dehydration technique, it is characterized in that the blue algae slurry that water pump (1) will need to handle sucks in the homogeneous jar (2), handle through high-shear homogenizing machine (3), the interior algae slurry of homogeneous jar (2) is through constantly circulation of return line (4), blue-green algae capsule group is broken, and makes blue-green algae group be dispersed into single cell suspension, and forms the homogeneous blue algae slurry; The homogeneous blue algae slurry by jar at the bottom of baiting valve (5) emit, flow into separate tank (6), add flocculation agent simultaneously, after homogeneous blue algae slurry and flocculation agent mix, be delivered to spiral centrifuge (8) through take away pump (7), blue-green algae slag and water sepn, solid phase blue-green algae slag is discharged through discharge opening, isolates liquid phase water by the pipeline reuse.
The major parts of high-shear homogenizing machine (3) is made of the rotor and the outer immobilized stator of internal layer high speed rotating, and the gap chamber is formed in the slit between rotor and stator, and the top of each rotor and stator all is made up of the strong projection of plurality of teeth, is and encircles strong the arrangement; Rotary speed of rotator is at 1000-10000rpm, the powerful kinetic energy that high tangential speed that the rotor high-speed rotation is produced and high frequency machinery effect belt come, make suspension fixed, being subjected to intensive machinery and fluid power in the narrow gap of rotor shears, centrifugal extruding, the liquid layer friction, bump is torn and comprehensive action such as turbulent flow, through moving in circles of high frequency, the dispersion that constantly is broken of blue-green algae blastophore, final particle dia is less than 10 microns, the blue-green algae cell free, the moisture of parcel disengages in the blastophore, simultaneously capsule is waited the macromolecular polysaccharide material through powerful shearing action, loses or weakens viscosity.
Flocculation agent is polyacrylamide (PAM).
Screw settling centrifuge (8) major parts is rotary drum and spiral propeller; Spiral propeller is driven with rotary drum by planetary differential and does to rotate in the same way, but rotating speed is different, utilize liquid different with solid proportion, separate the principle of two phase components under high speed rotating, suspension is sent in the machine continuously by the centre charging pipe, under action of centrifugal force, the heavy phase solids are deposited to the rotary drum internal surface and form sediment, push to the rotary drum small end by screw-blade, send liquid level and throw away from discharge opening, liquid phase is discharged by the overflow port of the big end of rotary drum.
The principle of work of processing blue algae slurry with intracapsular dehydration technique technology of the present invention is: a large amount of blue algae slurries that salvaging is obtained, pump in the high-shear homogenizing machine, blue algae slurry is subjected to intensive machinery in the narrow gap of stator and rotor and fluid power is sheared, centrifugal extruding, liquid layer friction, bump tear with comprehensive action such as turbulent flow under, allow the blue-green algae blastophore be broken, to disperse, the blue-green algae cell free, the moisture of parcel disengages in the blastophore, capsule is waited the macromolecular polysaccharide material through powerful shearing action simultaneously, lose or weaken viscosity, increase the pulp water velocity of separation.After flocculation agent is reunited, separate the method for pulp water with screw settling centrifuge again.
Screw settling is centrifugal to be meant that to utilize liquid different with solid proportion, the principle of under high speed rotating, separating two phase components, the algae slurry enters in the screw settling centrifuge, under action of centrifugal force, the heavy phase solids are deposited to the rotary drum internal surface and form sediment, push to the rotary drum small end by screw-blade, send liquid level and throw away from discharge opening, liquid phase is discharged by overflow weir by the big end of rotary drum.
Flocculation agent is reunited and is meant employing efficient organic floculant polyacrylamide (PAM), makes the blue-green algae cell that suspends in water, and impurity etc. are enriched in together through absorption, bonding, are easy to separate with water body.
The present invention handles by dewatering process in the employing capsule, removes the part moisture in the algae slurry, and not only alleviate the weight that algae is starched, but also reduce volume, and then the feasibility that improves algae mud joint disposal and utilize again.Its advantage mainly is: a, broken blue-green algae blastophore, discharge iuntercellular parcel moisture, and b, blue algae slurry moisture content removal effect are obvious, c, can administer engineering in conjunction with blue-green algae and carry out the mass-producing operation.D, selected device all are ripe standardized product, invest lower, reliable.
The present invention administers engineering for the lake blue algae wawter bloom practical, supporting integrated conduct method is provided, and solves the difficult transportation of algae slurry, and unmanageable problem improves the feasibility of blue-green algae comprehensive utilization.
Description of drawings: below in conjunction with the accompanying drawing illustrated embodiment, structure is described further, but protection domain is not limited to embodiment.
Fig. 1 processing blue algae slurry with intracapsular dehydration technique process schematic representation of the present invention.
Fig. 2 processing blue algae slurry with intracapsular dehydration technique technological process block-diagram of the present invention.
Among the figure: the 1-water pump; 2-homogeneous jar; The 3-high-shear homogenizing machine; The 4-return line; The 5-baiting valve; The 6-separate tank; The 7-take away pump; The 8-spiral centrifuge.
Embodiment: embodiment 1 (Dian Chi blue-green algae)
With water pump 1 with 5.0 tons of Dian Chi blue algae slurries, send in the homogeneous jar 2 with each 0.5 ton of amount lifting, handled 30 minutes through high-shear homogenizing machine 3, the powerful kinetic energy that high tangential speed that high-shear homogenizing machine rotor high speed rotating is produced and high frequency machinery effect belt come, make suspension fixed, being subjected to intensive machinery and fluid power in the narrow gap of rotor shears, centrifugal extruding, the liquid layer friction, bump is torn and comprehensive action such as turbulent flow, thereby make immiscible solid phase, liquid phase, moment uniform, fine homogeneous dispersion, through the moving in circles of high frequency, the solid phase particles dispersion that constantly is broken.The algae slurry constantly circulates through return line 4 in the homogeneous jar 2, and blue-green algae capsule group is broken, and makes blue-green algae group be dispersed into single cell suspension, the moisture of parcel disengages in the blue-green algae cell free, blastophore, and capsule is waited the macromolecular polysaccharide material through powerful shearing action simultaneously, lose or weaken viscosity, and form homogeneous algae slurry; 0.5 ton of algae slurry after emulsification is emitted by 2 end of homogeneous jar baiting valve 5, flows into 6.5m
3 Separate tank 6, above step repeats 10 times, gets 5.0 tons in homogeneous algae slurry.Add 10.0 kilograms of flocculation agent polyacrylamides (PAM) (addition is 0.2%) then; After emulsified algae slurry mixes with flocculation agent, being delivered to spiral centrifuge 8 through take away pump 7, to carry out sedimentation centrifugal, under action of centrifugal force, the heavy phase solids are deposited to the rotary drum internal surface and form sediment, push to the rotary drum small end by screw-blade, send liquid level and throw away from discharge opening, water is discharged by the overflow port of the big end of rotary drum, and pulp water separates, and algae-residue is discharged through discharge opening, get 450 kilograms in algae mud (water ratio 75%), algae water is by the pipeline reuse.
High speed dispersion mulser 3 is a pipeline high speed dispersion mulser, this machine working chamber wall, rotor and stator are made by stainless steel, one group of stator and rotor is housed in the working chamber, the working chamber intermediate solid drive shaft adopts cantilevered, transmission shaft and motor are taked direct connection, be sealed into mechanical seal, power of motor is 5.5Kw, and treatment capacity (maximum) is 5m
3/ h.
Claims (4)
1. the technology of a processing blue algae slurry with intracapsular dehydration technique, it is characterized in that the blue algae slurry that water pump (1) will need to handle sucks in the homogeneous jar (2), handle through high-shear homogenizing machine (3), the interior algae slurry of homogeneous jar (2) is through constantly circulation of return line (4), blue-green algae capsule group is broken, make blue-green algae group be dispersed into single cell suspension, and form the homogeneous blue algae slurry; The homogeneous blue algae slurry by jar at the bottom of baiting valve (5) emit, flow into separate tank (6), add flocculation agent simultaneously, after homogeneous blue algae slurry and flocculation agent mix, be delivered to spiral centrifuge (8) through take away pump (7), blue-green algae slag and water sepn, solid phase blue-green algae slag is discharged through discharge opening, isolates liquid phase water by the pipeline reuse.
2. the technology of processing blue algae slurry with intracapsular dehydration technique according to claim 1, the major parts that it is characterized in that high-shear homogenizing machine (3) is made of the rotor and the outer immobilized stator of internal layer high speed rotating, the gap chamber is formed in slit between rotor and stator, the top of each rotor and stator all is made up of the strong projection of plurality of teeth, is the strong arrangement of ring; Rotary speed of rotator is at 1000-10000rpm, the powerful kinetic energy that high tangential speed that the rotor high-speed rotation is produced and high frequency machinery effect belt come, make suspension fixed, being subjected to intensive machinery and fluid power in the narrow gap of rotor shears, centrifugal extruding, the liquid layer friction, bump is torn and comprehensive action such as turbulent flow, through moving in circles of high frequency, the dispersion that constantly is broken of blue-green algae blastophore, final particle dia is less than 10 microns, the blue-green algae cell free, the moisture of parcel disengages in the blastophore, simultaneously capsule is waited the macromolecular polysaccharide material through powerful shearing action, loses or weakens viscosity.
3. the technology of processing blue algae slurry with intracapsular dehydration technique according to claim 1 is characterized in that flocculation agent is polyacrylamide (PAM).
4. the technology of processing blue algae slurry with intracapsular dehydration technique according to claim 1 is characterized in that screw settling centrifuge (8) major parts is rotary drum and spiral propeller; Spiral propeller is driven with rotary drum by planetary differential and does to rotate in the same way, but rotating speed is different, utilize liquid different with solid proportion, separate the principle of two phase components under high speed rotating, suspension is sent in the machine continuously by the centre charging pipe, under action of centrifugal force, the heavy phase solids are deposited to the rotary drum internal surface and form sediment, push to the rotary drum small end by screw-blade, send liquid level and throw away from discharge opening, liquid phase is discharged by the overflow port of the big end of rotary drum.
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| CNA200710066251XA CN101219850A (en) | 2007-09-30 | 2007-09-30 | Technique for processing blue algae slurry with intracapsular dehydration technique |
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| CNA200710066251XA CN101219850A (en) | 2007-09-30 | 2007-09-30 | Technique for processing blue algae slurry with intracapsular dehydration technique |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663887A (en) * | 2012-09-06 | 2014-03-26 | 郑百祥 | Sludge treatment method and treatment system |
| CN104403928A (en) * | 2014-11-12 | 2015-03-11 | 中国科学院水生生物研究所 | Cascade, efficient and energy-saving device for harvesting microalgae biomass and method thereof |
| CN105039160A (en) * | 2015-07-01 | 2015-11-11 | 无锡德林海藻水分离技术发展有限公司 | Preparation method of blue algae powder |
| CN105169758A (en) * | 2015-10-16 | 2015-12-23 | 无锡德林海藻水分离技术发展有限公司 | Blue-green algae blastophore wall breaking method |
| CN109231634A (en) * | 2018-11-06 | 2019-01-18 | 江苏澳洋生态园林股份有限公司 | A kind of water body restoration device with algae water separation function |
| CN109231633A (en) * | 2018-11-06 | 2019-01-18 | 江苏澳洋生态园林股份有限公司 | A kind of red tide lash-up recovering method |
| CN110240378A (en) * | 2018-03-04 | 2019-09-17 | 无锡蓝湾资源再生科技有限公司 | The separation of algae water and tail water treatment system |
| CN110407363A (en) * | 2019-08-15 | 2019-11-05 | 江苏聚慧科技有限公司 | Cyanobacteria desiccation integral processing method and processing device |
| WO2020151656A1 (en) * | 2019-01-23 | 2020-07-30 | 香港理工大学 | Movable algae removal device for fresh water and marine environments |
-
2007
- 2007-09-30 CN CNA200710066251XA patent/CN101219850A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663887B (en) * | 2012-09-06 | 2015-07-22 | 郑百祥 | Sludge treatment method and treatment system |
| CN103663887A (en) * | 2012-09-06 | 2014-03-26 | 郑百祥 | Sludge treatment method and treatment system |
| CN104403928A (en) * | 2014-11-12 | 2015-03-11 | 中国科学院水生生物研究所 | Cascade, efficient and energy-saving device for harvesting microalgae biomass and method thereof |
| CN105039160A (en) * | 2015-07-01 | 2015-11-11 | 无锡德林海藻水分离技术发展有限公司 | Preparation method of blue algae powder |
| CN105169758A (en) * | 2015-10-16 | 2015-12-23 | 无锡德林海藻水分离技术发展有限公司 | Blue-green algae blastophore wall breaking method |
| CN105169758B (en) * | 2015-10-16 | 2017-03-22 | 无锡德林海环保科技股份有限公司 | Blue-green algae blastophore wall breaking method |
| CN110240378A (en) * | 2018-03-04 | 2019-09-17 | 无锡蓝湾资源再生科技有限公司 | The separation of algae water and tail water treatment system |
| CN109231634A (en) * | 2018-11-06 | 2019-01-18 | 江苏澳洋生态园林股份有限公司 | A kind of water body restoration device with algae water separation function |
| CN109231633A (en) * | 2018-11-06 | 2019-01-18 | 江苏澳洋生态园林股份有限公司 | A kind of red tide lash-up recovering method |
| CN109231633B (en) * | 2018-11-06 | 2021-07-16 | 江苏澳洋生态园林股份有限公司 | Red tide emergency restoration method |
| CN109231634B (en) * | 2018-11-06 | 2021-09-21 | 江苏澳洋生态园林股份有限公司 | Water body restoration device with algae-laden water separating function |
| WO2020151656A1 (en) * | 2019-01-23 | 2020-07-30 | 香港理工大学 | Movable algae removal device for fresh water and marine environments |
| CN110407363A (en) * | 2019-08-15 | 2019-11-05 | 江苏聚慧科技有限公司 | Cyanobacteria desiccation integral processing method and processing device |
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