CN1492037A - Preparation method for harvesting lake bloom cyanobacteria - Google Patents
Preparation method for harvesting lake bloom cyanobacteria Download PDFInfo
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- CN1492037A CN1492037A CNA031253636A CN03125363A CN1492037A CN 1492037 A CN1492037 A CN 1492037A CN A031253636 A CNA031253636 A CN A031253636A CN 03125363 A CN03125363 A CN 03125363A CN 1492037 A CN1492037 A CN 1492037A
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- 238000003306 harvesting Methods 0.000 title claims abstract description 4
- 241000192700 Cyanobacteria Species 0.000 title claims description 10
- 238000002360 preparation method Methods 0.000 title claims description 7
- 241000195493 Cryptophyta Species 0.000 claims abstract description 125
- 238000001035 drying Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 230000005484 gravity Effects 0.000 claims description 25
- 230000018044 dehydration Effects 0.000 claims description 20
- 238000006297 dehydration reaction Methods 0.000 claims description 20
- 239000004744 fabric Substances 0.000 claims description 19
- 239000004033 plastic Substances 0.000 claims description 13
- 229920003023 plastic Polymers 0.000 claims description 12
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- 239000004743 Polypropylene Substances 0.000 claims description 2
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- 239000007789 gas Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
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Abstract
The water bloom blue-green algae harvesting and preparing process includes the steps of forming enclosure; pumping the water bloom blue-green algae inside the enclosure and filtering with gravitational inclined sieve; dewatering the algae via centrifugating, rotation vibrating or deposition to obtain algae mud; drying in drying machine and green house to form algae sheet or block and crushing with crusher the algae sheet or block into algae powder. The algae powder is used as feed or fertilizer and as chemical material.
Description
Technical field
The present invention relates to lake blue algae wawter bloom results, more specifically relate to the preparation method of a kind of lake bloom blue algae results.
Background technology
In recent years, because industrial boom, population increase, urbanization increases the weight of, severe environmental pollution, the eutrophication degree aggravation of the many water bodys of China, cause a large amount of breedings of algae, particularly blue-green algae, some water body even serious blue-green alga bloom takes place, but the quality and the availability of water body directly influenced, and endangering livestock and human beings'health.Middle and lower reach of Yangtze River area lake blue algae wawter bloom occur in the 4-10 month in a large number, especially in the generation maximum of the high temperature season blue-green alga bloom of the 7-9 month.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 brought great influence to tourism on the other hand.For alleviating the pollution in lake, eliminate the blue-green algae peculiar smell, be necessary the blue-green alga bloom of bulk deposition is removed effectively.Removing blue-green algae has methods such as chemistry, biology and physics, and the sampling chemical process is thrown in pharmaceutical chemicals or reagent in the lake, must bring in various degree harm to water quality; Biological method is removed blue-green alga bloom and is not had the chemical pollution problem, but throw in filter-feeding fish and weed eater and microorganism etc. in a large number in the lake, though can remove a large amount of blue-green alga blooms, but at the peak season that blue-green algae breaks out in a large number, these methods are difficult to the blue-green alga bloom of bulk deposition is effectively eaten.Physics method has several different methods such as mechanical removal, biological explosion gas, and the sampling mechanical means is removed blue-green alga bloom, has not both had the such influence of chemistry and biology method, and can directly sweep off the lake surface blue-green alga bloom.Therefore, take place season in a large number at blue-green alga bloom, the method for employing machinery is removed effectively the blue-green alga bloom of bulk deposition and is used, to prevent to worsen propagation and secondary pollution, and reduce the water nutrition level thus, be very necessary thereby can reach the purpose of improving environment.Domestic have Jiangsu in Taihu Lake, Anhui in Chaohu, Kunming all attempts in the Dian Chi bloom blue algae is gathered in the crops, they have dropped into very big fund and manpower and have gathered in the crops, effect is not very good.External also few about the reported in literature of results lake algae, have only Japan in an academic discussion, to deliver one piece of paper about the blue-green alga bloom results, its main technique route is that to utilize ship that algae is extracted in the whizzer on the ship with water pump centrifugal, then with fuel with the algae burn processing.This method complicated operation, the cost height, consumes energy is quite big, and incendiary smog has caused pollution again to atmosphere, thereby also not very good.
Summary of the invention
The purpose of this invention is to provide the preparation method of a kind of lake bloom blue algae (little algae) results, easy to implement the method, easy and simple to handle, save the energy, cost is low, has solved blue-green alga bloom results, dehydration, the exsiccant problem of lake bulk deposition.
In order to achieve the above object, the present invention adopts following technical measures:
1 results
1.1 results platform setting:
Can be provided with fixing and mobile according to the geographical situation results of blue-green alga bloom heap (richness) collection situation or lake platform
1.1.1 stationary platform collection
Because be subjected to the influence of wind-force, algal bloom mainly concentrates on a certain bank in lake.Fixedly the gather place of platform is provided with somewhere around here.Build a stationary platform on ground, area 20m
2, can place 2 covers and filter slanted screen.Platform is near the limit, lake, and table top is done a tank a little more than lake surface at the filtered liquid water outlet of platform, is convenient to filtered liquid and runs into a lake.
1.1.2 mobile platform (collecting ship) is gathered
Because the littoral band distance in some lakes is longer, it is not enough gathering by stationary platform; Sometimes owing to the wind direction reason, the lake surface blue-green alga bloom can be floated to fixedly beyond the bleeding point with the wind, at this moment must adopt mobile platform (ship) to gather in the crops.To receive algae platform (ship) reaches the maximum place of algal bloom and gathers in the crops.At the platform front end hydraucone formula fence is set, hydraucone bottom is placed one and is inhaled the algae groove, utilizes the Non-blinding pump inhaled in the algae groove that blue-green alga bloom is drawn in the filtration unit on the ship and filters.
1.2 fence:
Fence is formed and made: fence porous plastics and waterproof, sun-proof cloth are formed.Its making method is that porous plastics is processed into round shape (diameter 20-25cm), utilizes waterproof, sun-proof cloth to wrap in the outside, and the lower end stays the cloth of 40-50cm as holding court from behind a screen.Fence is located at the following air port of lake surface near the bank, and layout is a toroidal; It mainly acts on is to make the lake surface blue-green alga bloom blow to hydraucone fence bottom by natural wind, wawter bloom is concentrated be deposited in the hydraucone bottom.
The size of fence is determined according to following factors: 1. pump energy collecting power; 2. algal layer thickness (usually in 5-10cm) is shown in the lake; 3. wind direction; 4. support fixation position; 5. the area of gathering of above-mentioned factor decision.
1.3 inhale the algae groove:
Inhale the algae groove and be arranged on hydraucone fence bottom, place a Non-blinding pump (power 2.2KW in the groove; Flow 10-15m
3Lift 10-15m), collection algae groove half is heavy partly bubbles through the water column (master unit bubble through the water column 5-8cm), is convenient to the top layer blue-green alga bloom is pumped in the filtration unit by pump.
Collection algae groove has two kinds of shapes:
A. disc: diameter 1140mm, high 640mm; 3 circular floating drums are set bubbles through the water column whole suction algae groove.Place the Non-blinding pump tube of inhaling algae in the middle of the disk, in put Non-blinding pump, the blue-green alga bloom around when starting water pump can flow in the tube automatically, is drawn in the filtration unit with pump.
B. trapezoidal: front end 1200mm, rear end 600mm, high 200mm; The rear end is provided with the Non-blinding pump tube of a high 400mm, in put Non-blinding pump, the blue-green alga bloom of front end can flow in the tube automatically when starting water pump, is drawn in the filtration unit with pump.
2 algae laden water separation process:
The algae water sepn divides sieving and centrifugal two step process to carry out:
2.1 sieving (filtration of vibration and gravity slanted screen):
2.1.1 the vibration and gravity slanted screen filters
The vibration and gravity slanted screen is installed on the fixed or movable platform of gathering, and the long 2.5-5.0m of slanted screen, wide 0.8-1.0m slanted screen setting angle are advisable about 15 degree.Sieve end place mat filter cloth, filter cloth adopts nylon gauze.Specification can be according to collecting season, the amount that wawter bloom takes place, and the screen cloth of employing different size is generally between the 0.125-0.035mm of aperture.To inhale the algae of algae groove periphery and be drawn onto and carry out vibration filtering on the vibration and gravity slanted screen by inhaling Non-blinding pump in the algae groove.
2.1.2 clean
The purpose of cleaning has two, one, and removal of contamination improves the efficient that harvests drying; The 2nd, improve the purity of material, the intermediate product after the dehydration and even the quality of dried cutting are improved.The mode of cleaning adopts lake water or tap water drip washing respectively according to the character of wawter bloom.The algae slurry that obtains is placed in the algae slurry storage pool, and centrifuge dehydration and deposition dehydrating use altogether.
2.2 centrifuge dehydration:
The algae stock pump that the sampling Non-blinding pump is starched algae in the storage pool carries out centrifuge dehydration in supporting whizzer.If whizzer per hour treatment capacity is 10m
3, so water pump should be supporting be 10m
3/ h.Centrifuge speed is controlled at 3200-3400r/h.The algae mud water content that obtains by centrifuge dewatering is approximately 90-92%.
2.3 deposition dehydrating
Since whizzer acquisition price height, if under the situation economic in short supply, the deposition dehydrating of can sampling.Algae slurry through gravity slanted screen results obtain places in the algae basket that is lined with filter cloth and carries out deposition dehydrating.Collection algae basket size is that 400 * 300 * 250mm is advisable, and the aperture of filter cloth is 0.071-0.154mm, about general sedimentation 2h, can obtain the algae mud about the about 91-93% of water content.
3 dryings and powder process
3.1 oven dry
Can utilize baking room to dry by centrifuge dehydration or the resulting algae mud of deposition dehydrating.Select SRC-1 individual layer belt cross-flow drying machine at home.Principal feature is the guipure good permeability, and warm air is easy to the material contact.The residence time can be regulated arbitrarily.Principle of work: material (algae mud) is layered on the guipure equably, and guipure moves in drying machine under the transmission mechanism effect equably.After the heating of air-flow heater via, inlet temperature is controlled at 70-75 ℃, advances hot-air distributor by recirculation blower, when become spraying the material that blows on the guipure and the material contact mass transfer, most of gas circulation, the gas that the water capacity that a part of temperature is low is bigger is discharged by wet-emitting blower as waste gas.Moisture content of material is under the condition of 90-92%, and output can reach 10-15kg/h, drying, product water content 7-8%.
3.2 solarization or air-dry
Adopt plastic woven cloth or nylon cloth to be growth 1m, wide 2m wooden frame, above the blue-green algae algae mud of results was tiled in, thickness 1-2cm was advisable, and directly dried naturally under sunlight or air-dry.
3.3 plastic greenhouse airing
Utilize plastic greenhouse, use the iron wire backguy in booth, spacing 50-100cm is coated in algae mud on woven cloth or the nylon cloth uniformly, and thickness is advisable with 1-2cm, hangs over the iron wire airing then.In case of necessity, a vacuum fan can be set in booth, be convenient to faster drying.State inner drying algae (mainly being meant the drying of spirulina) majority is to utilize spraying drying at present, and minority adopts and dries.Utilizing plastic greenhouse to hang to dry algae also was out of use at home, this method can solve and give the difficulty that is tiled in airing under the sun under long-term rainy day in summer or the shower weather condition, reduced floor space simultaneously, and exsiccant algae powder mass ratio flat dry good on the ground, lower than the dried algae cost of oven dry.
4 powder process
The algae sheet (piece, grain) that drying is good is ground into powder with pulverizer, and granularity 60-80 order is packed with the woven bag that is with the polyacrylic film liner then.Preserve at dry, shady and cool, the local light that covers of airy.
The present invention compared with prior art, have the following advantages and effect: suitability is strong, and is easy and simple to handle, saves the energy, treatment effect is good.Resulting algae mud water content can reach 90-92% after the algae water sepn, is convenient to drying like this.The blue-green algae dry powder of preparation can be used as feed and fertilizer, also can be used as the raw material that extracts the product that becomes more meticulous.
Description of drawings
Fig. 1 is preparation method's schematic flow sheet of a kind of lake bloom blue algae results.
Embodiment
The invention will be further described describes below in conjunction with accompanying drawing, the steps include:
At first be with lake surface bloom blue algae 1 fence 2, locate to be provided with a toroidal fence 2 at lake surface near the following air port on bank, it mainly acts on is by natural wind the lake surface blue-green alga bloom to be blown in the hydraucone bottom to pile up.Fence length can be divided two at 500m, every 250m, the about 3000m of area
2, put and be the hydraucone formula.Place a collection algae groove 3 in fence 2 bottoms, place a 15m in the collection algae groove 3
3/ h Non-blinding pump, with the algae pump around the collection algae groove 3 to algae water separation device with carrying out filter dehydration on the vibration and gravity slanted screen 4, clean 5 blue-green algaes, vibration and gravity slanted screen 4 enters in the lake 6 with clear water; Next is the algae water sepn: the algae water sepn is dewatered the long 2m of each gravity slanted screen, wide 0.9m with vibration and gravity slanted screen 4; Two one group, be arranged above and below in echelon angle 12 degree, 15m
3The configurable 3 groups of slanted screens of/h Non-blinding pump are sucked on the vibration and gravity slanted screen 4 algae with horizontal screw centrifuge 7 algae water sepn by the Non-blinding pump in the collection algae groove 3.Vibration and gravity slanted screen 4 upper berth filter cloths, the filter cloth aperture is generally at 0.154mm.Clear water after algae filters by vibration and gravity slanted screen 4 in the lake, obtains water content and is about 98% algae slurry 20m by discharge of pipes
3That/h, algae slurry further adopt is centrifugal, revolve shake, method such as sedimentation carries out secondary algae water sepn; The 3rd is secondary algae water sepn: the algae stock pump that 4 dehydrations of vibration and gravity slanted screen obtain is gone in the horizontal screw centrifuge 7, and centrifuge speed is 3200-3500r/mim, obtains water content and is about 90-92% algae mud 800-1200kg/h.If utilize algae extracting effective components development and use, can be directly with this algae mud as raw material; Can carry out next step dry 10 operations as not utilizing; The 4th is with revolving sieve 8 dehydrations of shaking: the algae slurry that vibration and gravity slanted screen 4 dehydration is obtained changes over to revolving in the sieve 8 that shakes and dewaters, and the algae mud water content that obtains is about 90-92%, and revolving sieve 8 treatment capacities of shaking is 200kg/h/ platform algae mud.If utilize algae extracting effective components development and use, can be directly with this algae mud as raw material; Can carry out next step dry 10 operations as not utilizing; The 5th is deposition dehydrating, with algae basket 9 deposition dehydratings: the algae slurry that 4 dehydrations of vibration and gravity slanted screen are obtained is put into the plastic crate (450 * 300 * 250) that is lined with bolting silk and is carried out the nature dehydration, filter cloth hole internal diameter is 0.071-0.154mm, be dehydrated into algae mud (this moment, water content was 90-92%) behind the 2-3h, general treatment capacity is the 30kg/ basket.If utilize algae extracting effective components development and use, can be directly with this algae mud as raw material; Can carry out next step dry 10 operations as not utilizing; The 6th is dry: the one, and with drying machine drying 10: if algae mud wouldn't utilize, can adopt SRC-1 individual layer belt cross-flow drying machine drying 10, this equipment principal feature is the guipure good permeability, and warm air is easy to material and contacts.The residence time can be regulated arbitrarily.Principle of work: material (algae mud) is layered on the guipure equably, and algae mud lay thickness 1cm, guipure move in drying machine under the transmission mechanism effect equably.After the heating of air-flow heater via, inlet temperature is controlled at 70-75 ℃, advances hot-air distributor by recirculation blower, when become spraying the material that blows on the guipure and the material contact mass transfer, most of gas circulation, the gas that the water capacity that a part of temperature is low is bigger is discharged by wet-emitting blower as waste gas.SRC-1 individual layer belt cross-flow drying machine can dry algae piece 20kg/h; The 2nd, use the plastic greenhouse drying: if algae mud wouldn't utilize, algae mud can be coated on the airing cloth, thickness 1-1.5cm is advisable, and the algae piece is dried in hanging in plastic greenhouse, a 300m
2Plastic greenhouse, hang to dry, area is for can reach 540m
2, can hang to dry bright algae 2000kg, fine one day can be dry, can gather in the crops dried algae 100kg; But airing in general 2 days is done, and by circulation in 3 days, can hang to dry bright algae 700kg average every day, gathers in the crops dried algae 35kg; The 3rd, dry or air-dry: if algae mud wouldn't utilize, algae mud can be coated on the airing cloth of tiling, thickness is generally 1-1.5cm and is advisable, and places it under the sun or dry or air-dry shady and cool ventilation; The 7th is to pulverize: pulverize with pulverizer 11, after algae mud drying is algae sheet or algae piece, adopt pulverizer 11 that it is pulverized algae powder.The product 60-80 order that sieves is with the woven bag packaging final prod 12 that contains the polypropylene liner.The algae powder can be used as feed and fertilizer, also can be used as the raw material that extracts fine chemistry (worker) product and uses.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03125363 CN1215166C (en) | 2003-09-02 | 2003-09-02 | Process for preparing water bloom blue-green algae harvest on lake |
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|---|---|---|---|
| CN 03125363 CN1215166C (en) | 2003-09-02 | 2003-09-02 | Process for preparing water bloom blue-green algae harvest on lake |
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| CN1492037A true CN1492037A (en) | 2004-04-28 |
| CN1215166C CN1215166C (en) | 2005-08-17 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411998C (en) * | 2005-11-01 | 2008-08-20 | 云南师范大学 | A kind of blue-green algae removal method |
| CN101886379A (en) * | 2010-07-16 | 2010-11-17 | 江南大学 | A method for collecting and salvaging microalgae in water bodies |
| CN102242078A (en) * | 2011-02-25 | 2011-11-16 | 上海交通大学 | Induction technology of anabaena flosaquae chlamydospore and preparation method of dry algae powder thereof |
| CN104357311A (en) * | 2014-10-16 | 2015-02-18 | 深圳职业技术学院 | System, method and boat for collecting and drying microalgae |
| CN106677144A (en) * | 2016-12-19 | 2017-05-17 | 无锡德林海环保科技股份有限公司 | Emergency treating method for eutrophic water blue algae eruption |
| 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 |
| CN110563300A (en) * | 2019-08-30 | 2019-12-13 | 黄河水利委员会黄河机械厂 | Vehicle-mounted algae-laden water separation and tail water treatment device and working method thereof |
| CN110563299A (en) * | 2019-08-30 | 2019-12-13 | 黄河水利委员会黄河机械厂 | ship-mounted algae-laden water separation and tail water treatment device and working method thereof |
| CN110589909A (en) * | 2019-09-30 | 2019-12-20 | 浙江海洋大学 | A method for collecting and processing nearshore cyanobacteria blooms |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100506341C (en) * | 2007-08-06 | 2009-07-01 | 江苏省农业科学院 | How to Dehydrate Bloom Spirulina |
| CN100504263C (en) * | 2007-08-14 | 2009-06-24 | 江苏鼎泽环境工程有限公司 | Blue algae volume reduction technique |
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2003
- 2003-09-02 CN CN 03125363 patent/CN1215166C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411998C (en) * | 2005-11-01 | 2008-08-20 | 云南师范大学 | A kind of blue-green algae removal method |
| CN101886379A (en) * | 2010-07-16 | 2010-11-17 | 江南大学 | A method for collecting and salvaging microalgae in water bodies |
| CN102242078A (en) * | 2011-02-25 | 2011-11-16 | 上海交通大学 | Induction technology of anabaena flosaquae chlamydospore and preparation method of dry algae powder thereof |
| CN102242078B (en) * | 2011-02-25 | 2013-01-09 | 上海交通大学 | Induction technology of anabaena flosaquae chlamydospore and preparation method of dry algae powder thereof |
| CN104357311A (en) * | 2014-10-16 | 2015-02-18 | 深圳职业技术学院 | System, method and boat for collecting and drying microalgae |
| CN106677144A (en) * | 2016-12-19 | 2017-05-17 | 无锡德林海环保科技股份有限公司 | Emergency treating method for eutrophic water blue algae eruption |
| 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 |
| CN110563300A (en) * | 2019-08-30 | 2019-12-13 | 黄河水利委员会黄河机械厂 | Vehicle-mounted algae-laden water separation and tail water treatment device and working method thereof |
| CN110563299A (en) * | 2019-08-30 | 2019-12-13 | 黄河水利委员会黄河机械厂 | ship-mounted algae-laden water separation and tail water treatment device and working method thereof |
| CN110563299B (en) * | 2019-08-30 | 2023-12-08 | 黄河机械有限责任公司 | Shipborne algae-laden water separation and tail water treatment device and working method thereof |
| CN110563300B (en) * | 2019-08-30 | 2023-12-15 | 黄河机械有限责任公司 | Vehicle-mounted algae-laden water separation and tail water treatment device and working method thereof |
| CN110589909A (en) * | 2019-09-30 | 2019-12-20 | 浙江海洋大学 | A method for collecting and processing nearshore cyanobacteria blooms |
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| Publication number | Publication date |
|---|---|
| CN1215166C (en) | 2005-08-17 |
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