CN106674374A - Process technology for extracting algin by utilizing sargassum thunbergii - Google Patents
Process technology for extracting algin by utilizing sargassum thunbergii Download PDFInfo
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- CN106674374A CN106674374A CN201611215301.1A CN201611215301A CN106674374A CN 106674374 A CN106674374 A CN 106674374A CN 201611215301 A CN201611215301 A CN 201611215301A CN 106674374 A CN106674374 A CN 106674374A
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- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/006—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
- C08B37/0063—Glycosaminoglycans or mucopolysaccharides, e.g. keratan sulfate; Derivatives thereof, e.g. fucoidan
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Abstract
The invention relates to a process technology for extracting algin by utilizing sargassum thunbergii. The process technology comprises the following steps: immersing, carrying out enzymolysis, digesting, diluting, foaming and floating, finely filtering, calcifying, decalcifying, dehydrating, neutralizing, granulating, drying, packaging, treating wastewater and the like. The process technology provided by the invention takes the sargassum thunbergii as a raw material and the problems of lacked raw materials and high cost are solved; the yield of products is high; compared with a traditional process, formaledhyde and free chlorine are not utilized in a production process; the safety production of foods is guaranteed and the produced wastewater can be recycled and cyclically utilized so that energy is saved and consumption is reduced; energy saving and emission reduction, and environment protection are realized.
Description
Technical field
The present invention relates to the comprehensive processing and utilization field of Sargassum, specifically, is related to one kind with sargassum thunbergii as raw material, utilizes
Enzymolysis process extracts the technology of Algin.
Background technology
Algin is the class polysaccharide material being widely present in various Brown algaes, and it is the system of alignic hydrophilic derivant
Claim, including alginate and ester.At present, the production of Algin is a typical ion exchange process.Brown algae is in alkali and heating
In the presence of, make the water-insoluble alginate in frond be converted into water miscible alkali metal salt, under the effect of inorganic acid calcium salt,
Separate with aqueous solution, form water-insoluble alginic acid and calcium alginate precipitation.By rough calcium alginate precipitation hydrochloric acid decalcification,
Which can be made to be converted into alginic acid.Alginic acid is mixed with sodium, potassium and ammonium salt, and different types of Algin can be obtained.Processing technique is such as
Under：Brown algae → immersion → washing → formaldehyde, acid, alkali process → digestion extraction → filtration → condensation → bleaching → dehydration → neutralization →
It is dried → crushes → packaging.
The raw material of production Algin is mainly derived from the Macrocystis pyrifera (L.) Ag. of import or the Thallus Laminariae (Thallus Eckloniae) of domestic cultivation at present.The former receives import price
The dynamic impact of lattice wave, the production cost build-up of pressure to Sargassum processing enterprise.It is instant that the latter is increasingly being used for production now
Food, only small part are used for commercial production.Starving significantly limit the development of domestic Sargassum processing enterprise.Jing
Research finds, also containing quite abundant Algin in sargassum thunbergii, can be used as the raw material of glue industry, and but its tissue fibers structure
It is more hard, it is difficult to extract.
The content of the invention
For the deficiencies in the prior art, the present invention provides the Technology that a kind of utilization sargassum thunbergii extracts Algin, the skill
Art solves the problems, such as that raw material is in short supply, high cost, and product yield is high with sargassum thunbergii as raw material, production process and traditional work
Skill is compared, and eliminates the use of formaldehyde and free chlorine, has ensured food safety production, and the waste water of generation is capable of achieving to reclaim circulation profit
With, it is energy-saving, realize energy-saving and emission-reduction and environmental conservation.
Utilization sargassum thunbergii of the present invention extracts the Technology of Algin and comprises the steps：
(1) soak
Water and sweller are added in dry sargassum thunbergii, after immersion is swelling, is crushed；
(2) digest
Sargassum thunbergii after crushing is sent in enzymatic vessel, alkalescence compound cellulase, the enzyme at a temperature of 45-50 DEG C is added
Solution 35-42h, is warming up to 88-93 DEG C, inactivates enzyme after enzymolysis；
(3) digest
Sargassum thunbergii after enzymolysis is sent in digestion pot, stirring, stewing pot, defibrination after alkali liquor is added, it is uniformly sticky to glue；
(4) dilution, foaming floating, fine straining
Water dilution is added in sticky glue obtained by step (3), being then fed into foaming machine carries out foaming, floats, will floating
Clear glue solution afterwards is filtered；
(5) calcification, decalcification
Stir while calcium chloride water and aqueous sodium hypochlorite solution, calcification are added in filtrate obtained by step (4)
After the completion of reaction, stirring is filtered, and then the dilute hydrochloric acid pickling for adding mass percentage content to be 1-2% adds water washing；
(6) dehydration, neutralization, pelletize, drying and packaging
By the alginic acid after decalcification be dehydrated to water content up in 60-74%, plus alkali and after, pelletize, drying, pack into
Product,
(7) wastewater treatment
The waste water produced in aforementioned process first passes around settling pit and removes float and impurity, subsequently into regulating reservoir, adjusts
After water saving matter is uniform, medicament air supporting is added, remove BOD, COD, SS, entering back into biochemistry pool is carried out at anaerobic and aerobic biochemistry successively
Reason, finally filters and removes organic solid content, the Water Sproading after process is done other industrial waters,
Wherein step (1) sweller be sodium hydrate aqueous solution, step (2) the alkalescence compound cellulase by
Cellulase, hemicellulase, pectase, protease composition, step (7) medicament is polyacrylamide and polymerization oxidation
Aluminum.
Preferably, step (1) sweller is that the sodium hydroxide that mass percent concentration is 0.4%-0.6% is water-soluble
Liquid.
Preferably, in terms of dry sargassum thunbergii, the addition of sweller is the 15%-20% of dry sargassum thunbergii weight.
Preferably, in terms of the quality of dry sargassum thunbergii, the consumption of alkalescence compound cellulase is 100-120 μ/g.
Preferably, step (7) the pneumatically supported process is：After regulating water quality is uniform, waste water is pumped into into cavitation aeration type gas
Floating machine, is added the polymeric aluminum chlorides solution that mass percent concentration is 5% in air floatation machine by pipeline, then will by pipeline
Mass percent concentration is that, during 2 ‰ polyacrylamide solution adds air floatation machine, polymeric aluminum chlorides solution and polyacrylamide are molten
The flow of liquid is respectively 150-200L/h and 50L/h.
Preferably, step (7) anaerobic biochemical treatment is under anaerobic by anaerobic bacteria and the generation of simultaneous oxygen bacterium
Thank, then Organic substance is decomposed by the metabolism of aerobic bacteria under aerobic conditions.
Beneficial effects of the present invention：
(1) swelling sargassum thunbergii cell wall, makes frond be easy to convert completely
In immersion, as sargassum thunbergii cell wall is fine and close, immersion adds sodium hydrate aqueous solution as sweller, makes swelling
Sargassum thunbergii afterwards is easier to digestion, and digestion reaction is more rapid, complete；
(2) sargassum thunbergii cell wall is digested, improves the quality and extraction ratio of Algin
Alkalescence compound cellulase is constituted by sargassum thunbergii using by cellulase, hemicellulase, pectase, protease
Part cell wall cellulose enzymolysis be glucose small molecule, and then reach the effect of destruction frond cell wall, improve Algin
Extraction rate reached 0.8%-1.2%, and the quality of the enzyme-added Algin on producing do not affect；
(3) energy-saving and emission-reduction and environmental conservation are realized
Sargassum thunbergii cell wall is digested using compound cellulase, the use of formaldehyde and free chlorine is eliminated, food peace is ensured
It is complete to produce, the usage amount of sodium carbonate when can save digestion operation, while saving the usage amount of steam and dilution tap water；In dehydration
Operation adopts two grades of continuous dehydrations, reduces blob of viscose moisture, reduces the usage amount of ethanol in dehydration of alcohol, so as to reduce ethanol
The consumption of steam in distillation；Enzymolysis can improve the purity of Algin product with two grades of continuous dehydrations, improve the color of alginate jelly product
Pool, improves alginate jelly product quality；According to Sargassum processing waste water characteristic, using the new skill of the wastewater treatments such as air supporting, biochemistry, physics and chemistry
Art, wastewater reuse rate is up to 36%.
Description of the drawings
Fig. 1 is the schematic flow sheet of the Technology that utilization sargassum thunbergii of the present invention extracts Algin.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail.
Embodiment 1
By dry sargassum thunbergii input digestion pot, the tap water of 8 times of quality of sargassum thunbergii is added, mass percent concentration is added
For 0.3% sodium hydrate aqueous solution as sweller, the addition of sodium hydrate aqueous solution is the 15% of dry sargassum thunbergii weight,
Soak swelling 36 hours, then will be immersion swelling after sargassum thunbergii crush；
(2) digest
Sargassum thunbergii pump after crushing is squeezed in enzymatic vessel, weakly alkaline compound cellulase, the alkalescence is added
Compound cellulase is made up of cellulase, hemicellulase, pectase, protease, and enzyme dosage is 100 μ/g, in 50 DEG C of temperature
Lower enzymolysis 35 hours, is warming up to 88 DEG C, inactivates enzyme after enzymolysis.
(3) digest
Sargassum thunbergii after enzymolysis is squeezed into and is digested in digestion pot, in digestion pot, add dry sargassum thunbergii to weigh 10 times, quality
Percent concentration is 2% alkali liquor, and alkali liquid temperature according to seasonal adjustment at 68~85 DEG C, when alkali liquor adds to 2/3, stir by unlatching
Device, adds stopping stirring to alkali liquor, vexed pot 80~120 minutes, can open stirring during vexed pot, and vexed pot temperature controls 65~
Between 75 DEG C, then restart stirring 30~60 minutes, next stage is entered through defibrination and digest pot, continue digestion 60 minutes to Mus
Algae converts tail completely, glue it is uniform it is sticky till；
(4) dilution, foaming floating, fine straining
Glue Jing is put a pot stirring cage coarse filtration and enters diluting tank, and filtering residue is recovered in recovery digestion pot, while adding 40 mesh mistakes of Jing
Net water or tap water dilution are rushed in filter, and amount of dilution is 80-180 times of dry sargassum thunbergii quality, diluent flow velocity 80~120 seconds it
Between, glue is pumped into into foaming machine then and is foamed, in the glue injection floating pool after foaming, stood 2.5-5 hours, release clear
Then recovered liquid is put into recovery pond by liquid again, and recovered liquid dilutes again, centrifugation foaming, and floating, clear liquid are put into glue reservoir, connect
, open flat-panel filter, screen filtration of the clear glue solution after floating by -260 mesh of 160 mesh, filtrate are entered basin, rush net water
Reclaim；
(5) calcification, decalcification
Calcification process is：
1. calcification jar agitator is opened, while implantation quality percentage composition is the calcium chloride solution of 12% Jing precipitations, is opened
Dynamic glue solution pump, according to glue solution flow suitable control calcium discharge, and adjusts the addition of sodium hypochlorite according to calcification glue color and luster situation
Amount, then glassware is taken off in startup successively, the calcium alginate for having converted is put into decalcification operation by pulverizer；
2. it is according to calcification degree, appropriate to adjust calcium chloride solution addition and foam maker pressure, requirement is made up to, give up calcium
Water calcic 0.5-0.8 ‰, gel content below 0.5 ‰, pH value 6.5-7.5；
Decalcification process is：
Start one, two, three, four decalcification stirring cage (80 mesh) and one, two, three, four decalcification agitator successively, will convert
Calcium alginate be put into one-level decalcification tank, add two grades of decalcification waste acid waters, two grades of decalcifications entered Jing after one-level decalcification stirring cage dewatering
Tank, adds three-level decalcification waste acid water, and three-level decalcification tank is entered Jing after two grades of decalcification stirring cage dewaterings, and adding weight/mass percentage composition is
1% dilute hydrochloric acid, enters level Four decalcification tank Jing after three-level decalcification stirring cage dewatering, and add water washing, uses stirring cage dewatering；
(6) dehydration, neutralization, pelletize, drying and packaging
By in the alginic acid injection one-level pressafiner material-storing box after decalcification, when material is to material-storing box 1/2, start spiral
Squeezer, the alginic acid block after one-level screw press is sent into deuterostrophies squeezer carries out second dehydration, second dehydration acid block
Require water content 60-74%, the packaged bag of the alginic acid that wind is sent is weighed, every bag of charge weight 20kg, then by alginic acid and
Through the soda input averager for sieving, soda consumption is the 8% of fresh sour block weight, stirs blowing after neutralizing 5 minutes, was neutralizing
Cheng Zhong, carries out colour developing inspection with indicator, adjusts caustic dosage, makes material in uniform grass green or light green, after neutralization
Algin sends into dehydrator after granulator granulation, pelletizing machine granulate, dries at 100 ± 20 DEG C, and after drying, moisture must not
More than 15%；
(7) wastewater treatment
Wash sargassum thunbergii waste water and first pass around settling pit, remove big float and impurity, enter water-filling subsequently into regulating reservoir
Matter runoff investigation, it is ensured that waste water mix homogeneously, after water stabilization, with the cavitation aeration type air supporting with very hyperoxia transport
Machine, adds polyacrylamide, aluminium polychlorid to carry out aoxidizing, flocculates, air supporting, removes major part BOD, COD, SS, then successively stream
Entering No. 1 biochemistry pool, No. 2 biochemistry pools successively carries out anaerobic biological and aerobic biochemical, i.e., successively borrow anaerobic bacteria under anaerobic
Organic substance is decomposed by the metabolism with simultaneous oxygen bacterium and by means of aerobic bacteria under aerobic conditions；Finally do not gone by Adsorption air supporting again
The solid content for removing, it is ensured that water clarification degree after process, the water section after process is reclaimed and does other industrial waters, and waste water repeats profit
With rate up to 36%, the leftover bits and pieces in the filtering residue and the course of processing after filtration are processed into into alga fertilizer and Sargassum using certain technique
Feedstuff.
As a result show, compared with prior art, the extraction ratio of this technical process Algin can improve 0.8%, and add
Enzyme is not affected on the viscosity of Algin produced and transparency.
Embodiment 2
By dry sargassum thunbergii input digestion pot, the tap water of 16 times of quality of sargassum thunbergii is added, mass percent is added dense
Spend for 0.6% sodium hydrate aqueous solution as sweller, the addition of sodium hydrate aqueous solution is dry sargassum thunbergii weight
20%, soak it is swelling 48 hours, then will immersion it is swelling after sargassum thunbergii crush；
(2) digest
Sargassum thunbergii pump after crushing is squeezed in enzymatic vessel, weakly alkaline compound cellulase, the alkalescence is added
Compound cellulase is made up of cellulase, hemicellulase, pectase, protease, and enzyme dosage is 110 μ/g, in 45 DEG C of temperature
Lower enzymolysis 42 hours, is warming up to 93 DEG C, inactivates enzyme after enzymolysis.
(3) digest
Sargassum thunbergii after enzymolysis is squeezed into and is digested in digestion pot, in digestion pot, add dry sargassum thunbergii to weigh 12 times, quality
Percent concentration is 1.4% alkali liquor, and alkali liquid temperature according to seasonal adjustment at 68~85 DEG C, when alkali liquor adds to 2/3, stir by unlatching
Device, adds stopping stirring to alkali liquor, vexed pot 80~120 minutes, can open stirring during vexed pot, and vexed pot temperature controls 65~
Between 75 DEG C, then restart stirring 30~60 minutes, next stage is entered through defibrination and digest pot, continue digestion 50 minutes to Mus
Algae converts tail completely, glue it is uniform it is sticky till；
(4) dilution, foaming floating, fine straining
Glue Jing is put a pot stirring cage coarse filtration and enters diluting tank, and filtering residue is recovered in recovery digestion pot, while adding 40 mesh mistakes of Jing
Net water or tap water dilution are rushed in filter, and amount of dilution is 80-180 times of dry sargassum thunbergii quality, diluent flow velocity 80~120 seconds it
Between, glue is pumped into into foaming machine then and is foamed, in the glue injection floating pool after foaming, stood 2.5-5 hours, release clear
Then recovered liquid is put into recovery pond by liquid again, and recovered liquid dilutes again, centrifugation foaming, and floating, clear liquid are put into glue reservoir, connect
, open flat-panel filter, screen filtration of the clear glue solution after floating by -260 mesh of 160 mesh, filtrate are entered basin, rush net water
Reclaim；
(5) calcification, decalcification
Calcification process is：
1. calcification jar agitator is opened, while implantation quality percentage composition is the calcium chloride solution of 8% Jing precipitations, is started
Glue solution pump, according to glue solution flow suitable control calcium discharge, and according to the addition of calcification glue color and luster situation regulation sodium hypochlorite,
Start successively again and take off glassware, the calcium alginate for having converted is put into decalcification operation by pulverizer；
2. it is according to calcification degree, appropriate to adjust calcium chloride solution addition and foam maker pressure, requirement is made up to, give up calcium
Water calcic 0.5-0.8 ‰, gel content below 0.5 ‰, pH value 6.5-7.5；
Decalcification process is：
Start one, two, three, four decalcification stirring cage (80 mesh) and one, two, three, four decalcification agitator successively, will convert
Calcium alginate be put into one-level decalcification tank, add two grades of decalcification waste acid waters, two grades of decalcifications entered Jing after one-level decalcification stirring cage dewatering
Tank, adds three-level decalcification waste acid water, and three-level decalcification tank is entered Jing after two grades of decalcification stirring cage dewaterings, and adding weight/mass percentage composition is
2% dilute hydrochloric acid, enters level Four decalcification tank Jing after three-level decalcification stirring cage dewatering, and add water washing, uses stirring cage dewatering；
(6) dehydration, neutralization, pelletize, drying and packaging
By in the alginic acid injection one-level pressafiner material-storing box after decalcification, when material is to material-storing box 2/3, start spiral
Squeezer, the alginic acid block after one-level screw press is sent into deuterostrophies squeezer carries out second dehydration, second dehydration acid block
Require water content 60-74%, the packaged bag of the alginic acid that wind is sent is weighed, every bag of charge weight 20kg, then by alginic acid and
Through the soda input averager for sieving, soda consumption is the 10% of fresh sour block weight, stirs blowing after neutralizing 5 minutes, in neutralization
During, colour developing inspection is carried out with indicator, caustic dosage is adjusted, makes material in uniform grass green or light green, after neutralization
Algin send into dehydrator after granulator granulation, pelletizing machine granulate, dry at 100 ± 20 DEG C, after drying, moisture is not
Must be more than 15%；
(7) wastewater treatment
Wash sargassum thunbergii waste water and first pass around settling pit, remove big float and impurity, enter water-filling subsequently into regulating reservoir
Matter runoff investigation, it is ensured that waste water mix homogeneously, after water stabilization, with the cavitation aeration type air supporting with very hyperoxia transport
Machine, adds polyacrylamide, aluminium polychlorid to carry out aoxidizing, flocculates, air supporting, removes major part BOD, COD, SS, then successively stream
Entering No. 1 biochemistry pool, No. 2 biochemistry pools, successively to carry out anaerobic and aerobic biochemical, i.e., successively borrow under anaerobic anaerobic bacteria and and
Organic substance is decomposed by the metabolism under oxygen bacterium and aerobic conditions by means of aerobic bacteria；Finally do not removed by Adsorption air supporting again
Solid content, it is ensured that water clarification degree after process, the water section after process is recovered into and does other industrial waters, waste water repeat profit
With rate up to 36%, the leftover bits and pieces in the filtering residue and the course of processing after filtration are processed into into alga fertilizer and Sargassum using certain technique
Feedstuff.
As a result show, compared with prior art, the extraction ratio of this technical process Algin can improve 1.2%, and add
Enzyme is not affected on the viscosity of Algin produced and transparency.
Embodiment 3
By dry sargassum thunbergii input digestion pot, the tap water of 9 times of quality of sargassum thunbergii is added, mass percent concentration is added
For 0.5% sodium hydrate aqueous solution as sweller, the addition of sodium hydrate aqueous solution is the 18% of dry sargassum thunbergii weight,
Soak swelling 45 hours, then will be immersion swelling after sargassum thunbergii crush；
(2) digest
Sargassum thunbergii pump after crushing is squeezed in enzymatic vessel, weakly alkaline compound cellulase, the alkalescence is added
Compound cellulase is made up of cellulase, hemicellulase, pectase, protease, and enzyme dosage is 100 μ/g, in 48 DEG C of temperature
Lower enzymolysis 40 hours, is warming up to 90 DEG C, inactivates enzyme after enzymolysis.
(3) digest
Sargassum thunbergii after enzymolysis is squeezed into and is digested in digestion pot, in digestion pot, add dry sargassum thunbergii to weigh 10 times, quality
Percent concentration is 2% alkali liquor, and alkali liquid temperature according to seasonal adjustment at 68~85 DEG C, when alkali liquor adds to 2/3, stir by unlatching
Device, adds stopping stirring to alkali liquor, vexed pot 80~120 minutes, can open stirring during vexed pot, and vexed pot temperature controls 65~
Between 75 DEG C, then restart stirring 30~60 minutes, next stage is entered through defibrination and digest pot, continue digestion 60 minutes to Mus
Algae converts tail completely, glue it is uniform it is sticky till；
(4) dilution, foaming floating, fine straining
Glue Jing is put a pot stirring cage coarse filtration and enters diluting tank, and filtering residue is recovered in recovery digestion pot, while adding 40 mesh mistakes of Jing
Net water or tap water dilution are rushed in filter, and amount of dilution is 80-180 times of dry sargassum thunbergii quality, diluent flow velocity 80~120 seconds it
Between, glue is pumped into into foaming machine then and is foamed, in the glue injection floating pool after foaming, stood 2.5-5 hours, release clear
Then recovered liquid is put into recovery pond by liquid again, and recovered liquid dilutes again, centrifugation foaming, and floating, clear liquid are put into glue reservoir, connect
, open flat-panel filter, screen filtration of the clear glue solution after floating by -260 mesh of 160 mesh, filtrate are entered basin, rush net water
Reclaim；
(5) calcification, decalcification
Calcification process is：
1. calcification jar agitator is opened, while implantation quality percentage composition is the calcium chloride solution of 12% Jing precipitations, is opened
Dynamic glue solution pump, according to glue solution flow suitable control calcium discharge, and adjusts the addition of sodium hypochlorite according to calcification glue color and luster situation
Amount, then glassware is taken off in startup successively, the calcium alginate for having converted is put into decalcification operation by pulverizer；
2. it is according to calcification degree, appropriate to adjust calcium chloride solution addition and foam maker pressure, requirement is made up to, give up calcium
Water calcic 0.5-0.8 ‰, gel content below 0.5 ‰, pH value 6.5-7.5；
Decalcification process is：
Start one, two, three, four decalcification stirring cage (80 mesh) and one, two, three, four decalcification agitator successively, will convert
Calcium alginate be put into one-level decalcification tank, add two grades of decalcification waste acid waters, two grades of decalcifications entered Jing after one-level decalcification stirring cage dewatering
Tank, adds three-level decalcification waste acid water, and three-level decalcification tank is entered Jing after two grades of decalcification stirring cage dewaterings, and adding weight/mass percentage composition is
1.5% dilute hydrochloric acid, enters level Four decalcification tank Jing after three-level decalcification stirring cage dewatering, and add water washing, uses stirring cage dewatering；
(6) dehydration, neutralization, pelletize, drying and packaging
By in the alginic acid injection one-level pressafiner material-storing box after decalcification, when material is to material-storing box 2/3, start spiral
Squeezer, the alginic acid block after one-level screw press is sent into deuterostrophies squeezer carries out second dehydration, second dehydration acid block
Require water content 60-74%, the packaged bag of the alginic acid that wind is sent is weighed, every bag of charge weight 20kg, then by alginic acid and
Through the soda input averager for sieving, soda consumption is the 8% of fresh sour block weight, stirs blowing after neutralizing 5 minutes, was neutralizing
Cheng Zhong, carries out colour developing inspection with indicator, adjusts caustic dosage, makes material in uniform grass green or light green, after neutralization
Algin sends into dehydrator after granulator granulation, pelletizing machine granulate, dries at 100 ± 20 DEG C, and after drying, moisture must not
More than 15%；
(7) wastewater treatment
Wash sargassum thunbergii waste water and first pass around settling pit, remove big float and impurity, enter water-filling subsequently into regulating reservoir
Matter runoff investigation, it is ensured that waste water mix homogeneously, after water stabilization, with the cavitation aeration type air supporting with very hyperoxia transport
Machine, adds polyacrylamide, aluminium polychlorid to carry out aoxidizing, flocculates, air supporting, removes major part BOD, COD, SS, then successively stream
Entering No. 1 biochemistry pool, No. 2 biochemistry pools, successively to carry out anaerobic and aerobic biochemical, i.e., successively borrow under anaerobic anaerobic bacteria and and
Organic substance is decomposed by the metabolism under oxygen bacterium and aerobic conditions by means of aerobic bacteria；Finally do not removed by Adsorption air supporting again
Solid content, it is ensured that water clarification degree after process, by after process water section reclaim do other industrial waters, wastewater reuse
Leftover bits and pieces in filtering residue and the course of processing after filtration are processed into alga fertilizer using certain technique and Sargassum are raised up to 36% by rate
Material.
As a result show, compared with prior art, the extraction ratio of this technical process Algin can improve 0.98%, and add
Enzyme is not affected on the viscosity of Algin produced and transparency.
Claims (6)
1. a kind of utilization sargassum thunbergii extracts the Technology of Algin, comprises the steps：
(1) soak
Water and sweller are added in dry sargassum thunbergii, after immersion is swelling, is crushed；
(2) digest
Sargassum thunbergii after crushing is sent in enzymatic vessel, adds alkalescence compound cellulase, 35- is digested at 45-50 DEG C
42h, is warming up to 88-93 DEG C after enzymolysis, inactivate enzyme；
(3) digest
Sargassum thunbergii after enzymolysis is sent in digestion pot, stirring, stewing pot, defibrination after alkali liquor is added, it is uniformly sticky to glue；
(4) dilution, foaming floating, fine straining
Water dilution is added in sticky glue obtained by step (3), being then fed into foaming machine carries out foaming, floats, after floating
Clear glue solution is filtered；
(5) calcification, decalcification
Stir while add calcium chloride water and aqueous sodium hypochlorite solution, calcification to react in filtrate obtained by step (4)
After the completion of, stirring is filtered, and then the dilute hydrochloric acid pickling for adding mass percentage content to be 1-2% adds water washing；
(6) dehydration, neutralization, pelletize, drying and packaging
During alginic acid after decalcification is dehydrated to water content up to 60-74%, plus alkali with after, finished product is packed to obtain in pelletize, drying；
(7) wastewater treatment
The waste water produced in aforementioned process first passes around settling pit and removes float and impurity, subsequently into regulating reservoir, adjusts water
After matter is uniform, medicament air supporting is added, remove BOD, COD, SS, entering back into biochemistry pool carries out anaerobism facultative anaerobic biochemical and aerobic life successively
Change is processed, and is finally filtered and is removed organic solid content, the Water Sproading after process is done other industrial waters,
Characterized in that, step (1) sweller is sodium hydrate aqueous solution, step (2) the alkalescence compound cellulose
Enzyme is made up of cellulase, hemicellulase, pectase, protease, and step (7) medicament is polyacrylamide and polymeric oxygen
Change aluminum.
2. a kind of utilization sargassum thunbergii according to claim 1 extracts the Technology of Algin, it is characterised in that step
(1) sweller is the sodium hydrate aqueous solution that mass percent concentration is 0.4%-0.6%.
3. a kind of utilization sargassum thunbergii according to claim 1 extracts the Technology of Algin, it is characterised in that with dry Mus
Tail algae meter, the addition of sweller are the 15%-20% of dry sargassum thunbergii weight.
4. a kind of utilization sargassum thunbergii according to claim 1 extracts the Technology of Algin, it is characterised in that with dry Mus
The quality meter of tail algae, the consumption of alkalescence compound cellulase is 100-120 μ/g.
5. a kind of utilization sargassum thunbergii according to claim 1 extracts the Technology of Algin, it is characterised in that step
(7) the pneumatically supported process is：After regulating water quality is uniform, waste water is pumped into into cavitation aeration type air floatation machine, by pipeline by quality
Percent concentration be 5% polymeric aluminum chlorides solution add air floatation machine in, then by pipeline by mass percent concentration be 2 ‰
Polyacrylamide solution add air floatation machine in, the flow of polymeric aluminum chlorides solution and polyacrylamide solution is respectively 150-
200L/h and 50L/h.
6. a kind of utilization sargassum thunbergii according to claim 1 extracts the Technology of Algin, it is characterised in that step
(7) anaerobic biochemical treatment is metabolism under anaerobic by anaerobic bacteria and simultaneous oxygen bacterium, then under aerobic conditions
By the metabolism of aerobic bacteria, Organic substance is decomposed.
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