CN105080939A - Emergency rapid reduction method of ashore green tide algae - Google Patents
Emergency rapid reduction method of ashore green tide algae Download PDFInfo
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- CN105080939A CN105080939A CN201510562320.0A CN201510562320A CN105080939A CN 105080939 A CN105080939 A CN 105080939A CN 201510562320 A CN201510562320 A CN 201510562320A CN 105080939 A CN105080939 A CN 105080939A
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Abstract
The invention relates to the technical field of environmental protection, in particular to an emergency rapid reduction method of ashore green tide algae. Obtained fresh green tide algae is hydrothermally reacted at a temperature 178-198 DEG C by 70-120 minutes, so that the green tide algae is reduced. After the hydrothermal reaction is finished, black solids remained at the bottom of a reaction kettle are collected for subsequent treatment to improve the yield of several soil plants.
Description
Technical field
The present invention relates to environmental technology field, specifically a kind of green damp algae that debarks is met an urgent need the method for quick minimizing.
Background technology
Green tide is that the algal tufa phenomenon formed is assembled in ocean large-scale algae burst growth.It is the Large Marine Ecosystem ecocatas-trophe perplexing coastal cities in recent years that green tide frequently breaks out.Green damp algae drifts to nearshore waters or is deposited on sandy beach, if process will be rotted not in time very soon.Green damp frond corruption produces foul gas, contaminated environment, affects the appearance of the city and local tour industry, destroys coast landscape, also may cause infringement to intertidal zone system.But for the green tide of extensive floating gathering, its processing cost is huge.Therefore, the emergency disposal about the green damp algae of disembarkation is the difficult problem perplexing coastal region.
The method of disposal of the green damp algae of current disembarkation has mainly used for reference the method for disposal of urban life solid waste, mainly comprise bury, ferment methane phase or drying and dewatering.All there is some technology in these three kinds of methods.Method of burying is simple to operate, but needs to select suitable to bury place.Bury place election bad, will secondary pollution be caused.The landfill yard for subsequent use tying up municipal refuse can be grabbed again in landfill site while burying green damp algae simultaneously, directly affects the sustainable development in city.Again, bury place many from green damp algae aheap away from, transport green damp algae and go the process of refuse landfill can consume a large amount of manpower and materials again.The technical bottleneck of fermentation methane phase method of disposal be the green damp algal biomass for fermenting cannot continue supply.Because it is only a probabilistic event occurred in annual specific month that green damp algae disembarkation is piled up.And this method of disposal capital cost is high, anaerobic reactor starts slow, easily be absorbed in when disposing for green damp algae and drop into substantial contribution in advance, and disposal plant operation gets up can only lean on green tide " to have a meal ", annual most of the time reactor is in stoppage phase, and once there be the disembarkation of green damp algae to pile up, reactor needs again the longer startup stabilization sub stage can formally for the treatment of green damp algae.The technical barrier of drying and dewatering facture is that new bud green damp algae water content is large, and the drying course time is grown and consumes mass energy.Secondly, the disposal of the green damp algae after oven dry is also a difficult problem.Will through long-distance transportation to special drying and processing factory after green damp algae salvages disembarkation in addition, this process has consumption mass energy.Therefore, development of new is needed to debark efficiently the fast emergent minimizing disposal technology of green damp algae.
Through finding the retrieval of prior art document, Zhou etc. are published in EnergyFuel, 2010, in " HydrothermalliquefactionofmacroalgaeEnteromorphaprolifer atobio-oil " literary composition that 24:4054 – 406 delivers, adopt hydrothermal liquefaction technique, under the hydrothermal condition of 220-320 DEG C, Enteromorpha is converted into bio oil.Xu etc. are published in FuelProcessingTechnology, 2015, in " Hydrothermalprocessingofmacroalgaeforproducingcrudebio-o il " literary composition that 130:268 – 274 delivers, mention under the hydrothermal condition of 250-390 DEG C, Enteromorpha is converted into bio oil.Huang Fubin etc. are at " Chinese Marine University's journal ", 2013, in " research of the Enteromorpha hydrothermal liquefaction decomposable process " literary composition delivered on 43 (4): 67-72, mention the hydrothermal condition adopting 200-300 DEG C, through 10-60min, Enteromorpha is converted into bio oil.But up to the present, Enteromorpha hydro-thermal reaction heat is mainly for the production of bio oil, and quick minimizing disposal hydro-thermal reaction being used for green damp algae Enteromorpha has no report.These report that the hydrothermal temperature adopted is higher, but not react lower than the low-temperature hydrothermal of 200 DEG C, and energy consumption is bigger than normal, and processing safety is not high.Further, before hydro-thermal reaction, green damp algae Enteromorpha all have passed through the pretreatment process of drying and dewatering drying, and the fresh sample of the Enteromorpha of non-immediate to high-moisture percentage is disposed.At present, not yet have and directly apply the report of the fresh sample of Enteromorpha as hydro-thermal reaction material.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, the method for the emergent quick minimizing of a kind of green damp algae that debarks is provided.
For achieving the above object, the present invention adopts technical scheme to be:
To debark the method for emergent quick minimizing of green damp algae, by the green damp algae of the fresh sample hydro-thermal reaction 70-120min at 178-198 DEG C obtained, make green damp algae be able to minimizing.
After described hydro-thermal reaction, minimizing product carries out follow-up disposal.Specifically, hydro-thermal reaction terminates, and collecting the minimizing product remained in bottom reactor, carrying out follow-up disposal, for improving the output of soil crop.The hydro-thermal reaction product obtained is mixed in soil, the output of some soil crop can be improved.As can about 10% be improved to the biomass of turfgrass (annual bluegrass and Manila).
The green damp algae of described fresh sample is the green green damp algae that green damp algae is directly salvaged in tide outburst marine site, disembarkation is piled up or the green damp algae through squeezer squeezing.Wherein, by fresh Enteromorpha frond in advance through the process that simply absorbs water (filter paper adsorption surface moisture), to reduce moisture, last hydro-thermal reaction product end-product content can be improved.
Described green damp algae is green damp algae Enteromorpha and/or U. pertusa.
The present invention has advantage:
The present invention is by gentle hydro-thermal reaction, new bud green damp algae in salvaging is made to reduce 50-60 doubly from after salvaging to the black solid weight preparing stable in properties after treatment, volume reduces about 30 times, realizes the emergent quick minimizing that green damp algae is piled up in disembarkation fast, thus is beneficial to follow-up disposal; Concrete:
1) effectively overcome the multiple technologies difficult problem that the emergency disposal that debarks green damp algae faces, initial investment capital cost be cheap, can according to the accumulation place of green damp algae and time, emergent erection reactor, starts minimizing reaction fast;
2) volume and weight of the green damp algae that debarks significantly can be reduced on the spot by decrement method of the present invention, significantly reduce the emergency disposal workload of the green damp algae that debarks, and gained minimizing product characteristics is stablized, belong to multiduty environment friendly material, be beneficial to follow-up disposal.
3) decrement method of the present invention adopts the fresh sample of hydro-thermal reaction process living beings, the fresh sample of the green damp algae of direct application is as hydro-thermal reaction material, eliminate the step that green damp algae is in the past dried in advance as needed before the hydro-thermal reaction process of Enteromorpha, hydro-thermal reaction system temperature is lower than 200 DEG C simultaneously, belong to low-temperature hydrothermal reaction, thus decrease energy consumption, ensure that application hydro-thermal reaction is to the operability of green damp algae minimizing disposal and security simultaneously.
Detailed description of the invention
Below by embodiment, the present invention is further described, but the present invention is not limited to following examples.
Embodiment 1
Green damp Enteromorpha is salvaged in Qingdao No.One Bathing Beach scene, the Enteromorpha salvaged (moisture content is up to more than 95%) is directly put into hydrothermal reaction kettle, 178 DEG C of rapid water thermal response 120min, Enteromorpha is made to reduce 59 times from the products weight prepared after reaction after salvaging, volume reduces about 30 times, thus is beneficial to follow-up disposal.Hydro-thermal reaction terminates, and the productive rate of black solid is only 1.7%, and to contrast black solid productive rate 1.6% suitable with the long-time hydro-thermal reaction of 16h.The method that the green damp algae of fresh sample is disposed in visible short time minimizing of the present invention has reliability.
Embodiment 2
Green damp U. pertusa is salvaged in scene, outdoor bathing place, Golden Beach, Yantai, the U. pertusa salvaged (moisture content is up to more than 95%) is directly put into hydrothermal reaction kettle, 183 DEG C of rapid water thermal response 100min, make green damp U. pertusa reduce 50 times from after salvaging to weight after minimizing.
Embodiment 3
The green damp Enteromorpha piled up in collection bank, No.One Bathing Beach sandy beach, Qingdao, these Enteromorpha living beings have passed through airing moisture content at the scene about 80%, the fresh sample of this green damp Enteromorpha is directly put into water and enters reactor, 188 DEG C of rapid water thermal response 100min, hydro-thermal reaction terminates, the productive rate of black solid is only salvages 1.9% of Enteromorpha fresh weight, and in visible the inventive method short time, the reliability of the green damp algae of salvaging disembarkation through natural drying is disposed in the minimizing of rapid water thermal response.
Embodiment 4
Green damp Enteromorpha is gathered in Qingdao Tuan Dao, these Enteromorpha living beings are applied squeezer at the scene and the moisture salvaging Enteromorpha are reduced to 50-60%, the fresh sample of this green damp Enteromorpha is directly put into hydrothermal reaction kettle, 198 DEG C of rapid water thermal response 70min, hydro-thermal reaction terminates, the productive rate of black solid is only salvages 2.0% of Enteromorpha fresh weight, thus proves that in this technological invention short time, the reliability through the green damp algae of press dewatering process is disposed in the minimizing of rapid water thermal response.
The various embodiments described above hydro-thermal reaction product is mixed in soil according to the addition of 10 (wt) %, the output of some soil crop (turfgrass) can be improved.As: as compared to the turfgrass control group (annual bluegrass and Manila) not adding hydro-thermal reaction product, add the experimental group of this kind of hydro-thermal reaction product, the biomass in annual bluegrass and Manila improves 10.4% and 11.1% respectively.
Claims (4)
1. a method for the emergent quick minimizing of the green damp algae of disembarkation, is characterized in that: by the green damp algae of the fresh sample hydro-thermal reaction 70-120min at 178-198 DEG C obtained, make green damp algae be able to minimizing.
2., by the method for the emergent quick minimizing of the green damp algae of disembarkation according to claim 1, it is characterized in that: after described hydro-thermal reaction, minimizing product carries out follow-up disposal.
3. by the method for the emergent quick minimizing of the green damp algae of disembarkation according to claim 1, it is characterized in that: the green damp algae of described fresh sample is the green green damp algae that green damp algae is directly salvaged in tide outburst marine site, disembarkation is piled up or the green damp algae through squeezer squeezing.
4., by the method for the emergent quick minimizing of the green damp algae of disembarkation according to claim 1, it is characterized in that: described green damp algae is green damp algae Enteromorpha and/or U. pertusa.
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Citations (7)
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| CN101591573A (en) * | 2009-07-02 | 2009-12-02 | 复旦大学 | A kind of method with the algae preparing liquid fuel by hydrothermal liquification |
| CN103710158A (en) * | 2014-01-02 | 2014-04-09 | 华南农业大学 | Method for producing biodiesel by using kitchen wastes |
| US20140275299A1 (en) * | 2013-03-14 | 2014-09-18 | Algae Systems, LLC | Systems and Methods for Hydrothermal Conversion of Biomass |
| CN104093746A (en) * | 2011-10-24 | 2014-10-08 | 华盛顿州立大学研究基金会 | Sequential hydrothermal liquifaction (seqhtl) for extraction of superior bio-oil and other organic compounds from oleaginous biomass |
| CN104293473A (en) * | 2013-07-19 | 2015-01-21 | 中国石油化工股份有限公司 | Method for extracting oil from oil production microbes |
| CN104293474A (en) * | 2013-07-19 | 2015-01-21 | 中国石油化工股份有限公司 | Method for extracting oil from oil production microbes |
| CN104449788A (en) * | 2013-09-13 | 2015-03-25 | 中国科学院上海高等研究院 | Method for preparing micro-algal oil by microalgae hydro-thermal liquefaction |
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2015
- 2015-09-07 CN CN201510562320.0A patent/CN105080939A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101591573A (en) * | 2009-07-02 | 2009-12-02 | 复旦大学 | A kind of method with the algae preparing liquid fuel by hydrothermal liquification |
| CN104093746A (en) * | 2011-10-24 | 2014-10-08 | 华盛顿州立大学研究基金会 | Sequential hydrothermal liquifaction (seqhtl) for extraction of superior bio-oil and other organic compounds from oleaginous biomass |
| US20140275299A1 (en) * | 2013-03-14 | 2014-09-18 | Algae Systems, LLC | Systems and Methods for Hydrothermal Conversion of Biomass |
| WO2014150248A1 (en) * | 2013-03-14 | 2014-09-25 | Algae Systems, LLC | Systems and methods for hydrothermal conversion of biomass |
| CN104293473A (en) * | 2013-07-19 | 2015-01-21 | 中国石油化工股份有限公司 | Method for extracting oil from oil production microbes |
| CN104293474A (en) * | 2013-07-19 | 2015-01-21 | 中国石油化工股份有限公司 | Method for extracting oil from oil production microbes |
| CN104449788A (en) * | 2013-09-13 | 2015-03-25 | 中国科学院上海高等研究院 | Method for preparing micro-algal oil by microalgae hydro-thermal liquefaction |
| CN103710158A (en) * | 2014-01-02 | 2014-04-09 | 华南农业大学 | Method for producing biodiesel by using kitchen wastes |
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Inventor after: Lv Jian Inventor after: Zhang Cui Inventor after: Wu Jun Inventor before: Lv Jian Inventor before: Liu Qing Inventor before: Ding Yiqiang |
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Application publication date: 20151125 |