CN105693031B - The method and equipment of alginates are synthesized in a kind of sewage disposal process - Google Patents
The method and equipment of alginates are synthesized in a kind of sewage disposal process Download PDFInfo
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- CN105693031B CN105693031B CN201610201849.4A CN201610201849A CN105693031B CN 105693031 B CN105693031 B CN 105693031B CN 201610201849 A CN201610201849 A CN 201610201849A CN 105693031 B CN105693031 B CN 105693031B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08B37/0084—Guluromannuronans, e.g. alginic acid, i.e. D-mannuronic acid and D-guluronic acid units linked with alternating alpha- and beta-1,4-glycosidic bonds; Derivatives thereof, e.g. alginates
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The present invention relates to the methods and apparatus that alginates are synthesized in a kind of sewage disposal process, wherein：Method includes the following steps：S1：By in sewage discharge to microorganism reactor, under suitable environmental condition, the metabolism through microorganism, organic pollution is degraded, and microorganism secretion alginates；S2：Muddy water in microorganism reactor containing a large amount of alginates flows into alkali cleaning dissolution reactor；S3：Muddy water in alkali cleaning dissolution reactor containing soluble alginate, flows into hyperfiltration membrane assembly, and dissolubility alginate soln is after hyperfiltration membrane assembly detaches, and water recycles during water outlet is used as, and alginate soln is concentrated, into follow-up alginates extraction process.The beneficial effects of the present invention are, the method and apparatus that alginates are synthesized in a kind of sewage disposal process is provided, while realizing sewage purification, water resource in not only recycling, but also production alginates.
Description
Technical field
The present invention relates to the method and apparatus that alginates are synthesized in a kind of sewage disposal process
Background technology
Alginates (Alginate) also known as alginate, seaweed gel, algin, alginate, generally originate from large-scale Hai Sheng
Brown alga plant；Natural polysaccharide carbohydrate, e.g., alginic acid can therefrom be extracted：(C6H7O6H) n and its esters.In recent years one
A bit the study found that alginates have two major classes bacterium i.e. pseudomonad in addition to being naturally originated from the brown algas such as kelp, bulk kelp in nature
The bacterium for belonging to (Pseudomonas) and azotobacter (Azotobacter) also being capable of biosynthesis alginates.Even, some are light
Water microalgae is also possible to biosynthesis alginates.
Alginates as a kind of biopolymer of high value, food, medical and health, household chemicals, weaving and
Biotechnology field has a wide range of applications and high economic value.For the sewage treatment field involved by this patent,
Alginates are also widely used.Containing a large amount of carboxylic acid groups, hydroxyl isopolarity group in its molecular structure, they can be with heavy metal
Ions binding, to efficiently separate heavy metal from sewage/wastewater.Good water treatment flocculant and cell can also be used as solid
Surely change carrier material.Because it is nontoxic to human body and skin, non-stimulated, easily biological-degradable can be referred to as a kind of green, sustainable
High molecular material.
Currently, the production of alginates is mainly extracted from the marine browns such as kelp, bulk kelp, but its production cost is high, alginic acid
Salt composition can not regulate and control, easily by seasonal effect, and it produces waste water and is easy to pollute the environment.Moreover, utilizing pseudomonad
Belong to and azotobacter bacterium living beings synthesize alginates, this two classes bacterium of purebred culture needs to consume a large amount of organic nutrition production
Raw material, this makes production cost increase substantially.According to statistics, often the production products such as 1 ton of phycocolloid and iodine need more than 1200 tons of fresh water
With a large amount of coals, acid, alkali etc., generated waste water is difficult to recycle, most of all direct emissions.
In the technique of production mosanom, by a large amount of production waste water of discharge, wherein containing carbohydrate gum, pigment, cellulose etc.
Organic matter, and a large amount of foreign ion (such as Na+、Ca2+、CI-Deng).It, can be right if not using any process before discharge
Marine environment causes damages, and seawater quality is caused to deteriorate.These factors lead to the further genralrlization of traditional alginic acid technology of threonates
Using facing bottleneck problem.Have between this, R＆D Professional is attempted to close using pseudomonas and azotobacter bacterium living beings
At alginates.In a manner of continuous batch fermentation and continuous culture production technology, bacterium is regulated and controled by biotechnology and produces alginates
Characteristic, optimum culture condition, stablize production glue ability；To the various alginates with specific structure performance of biosynthesis.So
And purebred culture this two classes bacterium, it needs to consume a large amount of organic nutrition raw materials for production, this makes production cost significantly carry
It is high.
Invention content
In view of the above-mentioned problems in the prior art, it is a primary object of the present invention to solve the defect of the prior art,
The present invention provides the method and apparatus that alginates are synthesized in a kind of sewage disposal process, while realizing sewage purification, not only
Water resource in recycling, and produce alginates.
The present invention provides a kind of methods that alginates are synthesized in sewage disposal process, include the following steps：
S1：By in sewage discharge to microorganism reactor, under suitable environmental condition, the metabolism through microorganism is made
With organic pollution is degraded, and microorganism secretion alginates；
S2：Muddy water in microorganism reactor containing a large amount of alginates flows into alkali cleaning dissolution reactor；
S3：Muddy water in alkali cleaning dissolution reactor containing soluble alginate, flows into hyperfiltration membrane assembly, dissolubility
Alginate soln is after hyperfiltration membrane assembly detaches, and water recycles during water outlet is used as, and alginate soln is concentrated, into follow-up
In alginates extraction process.
Optionally, the muddy water in the alkali cleaning dissolution reactor containing soluble alginate is first flowed into separated type micro-filtration
It in membrane module, flows into hyperfiltration membrane assembly again later, separated type micro-filtration membrane module is for retaining from alkali cleaning dissolution reactor stream
Go out body containing microbial cell in muddy water and its fragment and inorganic particle.
Optionally, it is provided with integral type micro-filtration membrane module in the alkali cleaning dissolution reactor, it is anti-for retaining alkali cleaning dissolving
Answer microbial cell body and its fragment and inorganic particle in device.
Optionally, the separated type micro-filtration membrane module and the isolated microbial cell body of integral type micro-filtration membrane module and
The high-concentration turbid liquor of its fragment and inorganic particle is discharged as residue.
Optionally, in the step S1 further include addition NaOH, KOH or Na into alkali cleaning dissolution reactor2CO3Highly basic, with
PH value in reactor is adjusted, makes in alkali cleaning dissolution reactor to be transformed into alginic acid with alginates existing for non-solubilised state soluble
Alginates.
Optionally, it in the alkali cleaning dissolution reactor in the step S2, is acted on through gravitational settling, it is heavy containing microbial bacterial
Starch, a part are back in microorganism reactor, to adjust microbial biomass therein；A part is discharged as residue.
Optionally, the sewage in the step S1 include city planting ductwork discharge sewage or industrial production discharge containing can
The waste water of biodegradable organic matter.
A kind of equipment the present invention also provides alginates are synthesized in sewage disposal process, including microorganism reactor, alkali cleaning
Dissolution reactor and hyperfiltration membrane assembly, the alkali cleaning dissolution reactor respectively with the microorganism reactor and the ultrafiltration membrane
Component is connected.
Optionally, further include separated type micro-filtration membrane module, the separated type micro-filtration membrane module is reacted with alkali cleaning dissolving respectively
Device is connected with the hyperfiltration membrane assembly.
Optionally, further include integral type micro-filtration membrane module, the integral type micro-filtration membrane module setting is dissolved in the alkali cleaning
In reactor, the integral type micro-filtration membrane module is connected with the hyperfiltration membrane assembly.
The present invention has the following advantages and beneficial effect：
1, the organic nutrient substance that the present invention uses derives from sewage, turns waste into wealth, and saves raw materials for production cost；
2, it does not generate production waste water not only, but also organic contamination in sewage is converted to the alginates of high recovery value, together
When sewage handled, realize environmental protection；
3, it is advantage in pseudomonas and azotobacter bacterium by microorganism mixed bacteria culture biotechnology
In the environment of bacterium, the alginates of orientation regulation and control synthesis specified molecular weight and structure are not influenced by natural environmental conditions such as seasons.
Description of the drawings
Fig. 1 is the process flow chart of the method for synthesis alginates in the sewage disposal process that the embodiment of the present invention 1 provides；
Fig. 2 is the process flow chart of the method for synthesis alginates in the sewage disposal process that the embodiment of the present invention 2 provides；
Fig. 3 is the structural schematic diagram of the equipment of synthesis alginates in the sewage disposal process that the embodiment of the present invention 3 provides；
Fig. 4 is the structural schematic diagram of the equipment of synthesis alginates in the sewage disposal process that the embodiment of the present invention 4 provides.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, below to the reality of the present invention provided in the accompanying drawings
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, it can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
The present invention is further illustrated with specific embodiment below with reference to accompanying drawings.
Embodiment 1
As shown in Figure 1, the method for synthesizing alginates in a kind of sewage disposal process provided for the embodiment of the present invention 1, packet
Include following steps：
The first step：In sewage discharge to microorganism reactor 1, under suitable environmental condition, the new old generation through microorganism
The effect of thanking, organic pollution are degraded, and microorganism secretion alginates；Above-mentioned microorganism reactor 1 is led with sewage disposal
Domain aeration tank is similar, but the mixture system of the compositions such as microorganism, organic pollution materials, water is not limited to common activity dirt
Mud can also be flocculation sludge and granule sludge, even be added to the biomembrane of filler.It can by the source of aforementioned alginates
Know, crucial technology point is that must contain pseudomonas or the azotobacter that can secrete alginates in the microbial reaction system
Bacterium.And the culture environment condition that two kinds of Pseudomonas exist and largely the condition of secretion alginates depends on reactor, such as dissolve
Oxygen amount, pH value, micronutrient levels, nutritional ingredient etc..It is worth noting that sewage of the present invention is not limited to city planting ductwork
The sewage of discharge, or the waste water containing biodegradable organic of industrial production discharge.Therefore, the microorganism reactor
Effect be, using dirty organic pollutants as nutrients, culture can secrete a large amount of alginates with pseudomonas with
Azotobacter bacterium is the microorganism species of dominant microflora；
Second step：Muddy water in microorganism reactor 1 containing a large amount of alginates, wherein the alginates contained are predominantly non-
Solubilised state, such as flocculation sludge, granule sludge, flow into alkali cleaning dissolution reactor 2.The biosynthesis in microorganism reactor 1
A part of alginates, it is possible to the salt of non-solubility exist such as calcium salt, magnesium salts, molysite, or be adsorbed in cell body and
Its fragment and inorganic particle surfaces；If microorganism reactor 1 may be converted to and not dissolve in acidity, some alginates
The alginic acid of water.In order to improve the rate of recovery of follow-up membrane module separating-purifying alginates, it is added into alkali cleaning dissolution reactor 2
NaOH, KOH or Na2CO3Equal highly basic make the alginates of non-solubilised state be transformed into alginic acid solvable to adjust pH value in reactor
Alginates, such as mosanom, potassium alginate.In alkali cleaning dissolution reactor 2, acted on through gravitational settling, it is heavy containing microbial bacterial
Starch, a part are back in microorganism reactor 2, to adjust microbial biomass therein；A part is discharged as residue；
Third walks：Muddy water in alkali cleaning dissolution reactor 2 containing soluble alginate, wherein the alginates contained are dissolving
State flows into separated type micro-filtration membrane module 3.Not only contain alginates to be recycled in muddy water in alkali cleaning dissolution reactor 2, also
Containing microbial cell body and its fragment and inorganic particle, the size of these suspended materials is generally higher than 1.0 μm, so using micro-
Filter membrane (it retains aperture and is generally 0.1~1.0 μm) can almost retain removal completely, and alginates and water can then pass through micro-filtration
Film.Micro-filtration membrane aperture is depending on concrete engineering in practice suspended material size；
4th step：Eliminate microbial cell body and its fragment and inorganic particle, the separated type of the alginates containing dissolubility
3 filter liquor of micro-filtration membrane module, flows into hyperfiltration membrane assembly 4.Alginate soln is after the separation of hyperfiltration membrane assembly 4, during water outlet is used as
Water recycles；And alginate soln is concentrated, and into follow-up alginates extraction process, calcium such as may be used and coagulate-acidization point
From purification alginates.For example, commercially available mosanom molecular weight is generally 1.2~190,000 dalton, corresponding macro-size is about
0.005~0.05 μm, and ultrafiltration membrane aperture is generally 0.001~0.02 μm；Therefore, the ultrafiltration membrane aperture of selection should be according to specific
Depending on the Alginate molecules amount size that engineering is concentrated and separated in practice.
Embodiment 2
Shown in Fig. 2, the method that alginates are provided in a kind of sewage disposal process provided for the embodiment of the present invention 2, including
Following steps：
The first step：In sewage discharge to microorganism reactor 1, under suitable environmental condition, the new old generation through microorganism
The effect of thanking, organic pollution are degraded, and microorganism secretion alginates；Above-mentioned microorganism reactor 1 is led with sewage disposal
Domain aeration tank is similar, but the mixture system of the compositions such as microorganism, organic pollution materials, water is not limited to common activity dirt
Mud can also be flocculation sludge and granule sludge, even be added to the biomembrane of filler.It can by the source of aforementioned alginates
Know, crucial technology point is that must contain pseudomonas or the azotobacter that can secrete alginates in the microbial reaction system
Bacterium.And the culture environment condition that two kinds of Pseudomonas exist and largely the condition of secretion alginates depends on reactor, such as dissolve
Oxygen amount, pH value, micronutrient levels, nutritional ingredient etc..It is worth noting that sewage of the present invention is not limited to city planting ductwork
The sewage of discharge, or the waste water containing biodegradable organic of industrial production discharge.Therefore, the microorganism reactor
Effect be, using dirty organic pollutants as nutrients, culture can secrete a large amount of alginates with pseudomonas with
Azotobacter bacterium is the microorganism species of dominant microflora；
Second step：Muddy water in microorganism reactor 1 containing a large amount of alginates, wherein the alginates contained are predominantly non-
Solubilised state, such as flocculation sludge, granule sludge, flow into alkali cleaning dissolution reactor 2.The biosynthesis in microorganism reactor 1
A part of alginates, it is possible to the salt of non-solubility exist such as calcium salt, magnesium salts, molysite, or be adsorbed in cell body and
Its fragment and inorganic particle surfaces；If microorganism reactor 1 may be converted to and not dissolve in acidity, some alginates
The alginic acid of water.In order to improve the rate of recovery of follow-up membrane module separating-purifying alginates, it is added into alkali cleaning dissolution reactor 2
NaOH, KOH or Na2CO3Equal highly basic, to adjust pH value in reactor, so that the alginates of non-solubilised state is transformed into alginic acid can
Molten alginates, such as mosanom, potassium alginate.It in alkali cleaning dissolution reactor 2, is acted on through gravitational settling, containing microbial bacterial
Sediment, a part are back in microorganism reactor 2, to adjust microbial biomass therein；A part is arranged as residue
Go out；
Third walks：Muddy water in alkali cleaning dissolution reactor 2 containing soluble alginate, wherein the alginates contained are dissolving
State, in this embodiment, micro-filtration membrane module is immersed in alkali cleaning dissolution reactor 2, as shown in Fig. 2, as integral type microfiltration membranes group
Part 5；To save the floor space of production technology；Embodiment 2 compared with Example 1, in addition to the type of attachment of micro-filtration membrane module
Difference, other are consistent；The isolated body containing microbial cell of integral type micro-filtration membrane module 5 and its fragment and inorganic particle are high
Concentration suspension is discharged as residue；
4th step：Eliminate microbial cell body and its fragment and inorganic particle, the integral type of the alginates containing dissolubility
5 filter liquor of micro-filtration membrane module, flows into hyperfiltration membrane assembly 4.Dissolubility alginate soln is after the separation of hyperfiltration membrane assembly 4, water outlet
It is recycled as middle water；And alginate soln is concentrated, and into follow-up alginates extraction process, it is solidifying-sour that calcium such as may be used
Change method separating-purifying alginates.For example, commercially available mosanom molecular weight is generally 1.2~190,000 dalton, corresponding macro-size
About 0.005~0.05 μm, and ultrafiltration membrane aperture is generally 0.001~0.02 μm；Therefore, the ultrafiltration membrane aperture of selection answers root
Depending on the Alginate molecules amount size being concentrated and separated in practice according to concrete engineering.
It should be noted that present invention process is not limited to the recycling of biosynthesis alginates in sewage disposal process；Due to
Alginates are a kind of polysaccharide extracellular polymeric (Extracellular Polymeric Substances, EPS), therefore other
The large biological molecules substance such as polysaccharide, protein, nucleic acid, lipid, be also suitable for the technological process of the present invention；Unlike, micro- life
Microorganism species and culture environment condition, the reaction condition of alkali cleaning dissolution reactor 2, separated type microfiltration membranes in object reactor 1
Ultrafiltration membrane aperture in micro-filtration membrane aperture and hyperfiltration membrane assembly 4 in component 3 and integral type micro-filtration membrane module 5.In addition, of the invention
It is further adapted to, using sewage as organic nutrient substance, cultivate marine brown or freshwater microalgae biosynthesis alginates.
Embodiment 3
As shown in figure 3, the equipment for synthesizing alginates in a kind of sewage disposal process provided for the embodiment of the present invention 3, packet
Include microorganism reactor 1, alkali cleaning dissolution reactor 2 and hyperfiltration membrane assembly 4, alkali cleaning dissolution reactor respectively with microbial reaction
Device is connected with hyperfiltration membrane assembly；Further include separated type micro-filtration membrane module 3, separated type micro-filtration membrane module is anti-with alkali cleaning dissolving respectively
Device is answered to be connected with hyperfiltration membrane assembly.
Embodiment 4
As shown in figure 4, the equipment for synthesizing alginates in a kind of sewage disposal process provided for the embodiment of the present invention 4, packet
Include microorganism reactor 1, alkali cleaning dissolution reactor 2 and hyperfiltration membrane assembly 4, alkali cleaning dissolution reactor respectively with microbial reaction
Device is connected with hyperfiltration membrane assembly；Further include integral type micro-filtration membrane module 5, the setting of integral type micro-filtration membrane module is anti-in alkali cleaning dissolving
It answers in device, integral type micro-filtration membrane module is connected with hyperfiltration membrane assembly.
This patent outstanding advantages are as follows：
1, raw materials for production cost is saved.Different from the purebred culture production alginates of microorganism, what patent of the present invention used has
Machine nutrient source is in sewage, during sewage disposal, culture can largely secrete alginates with pseudomonas with it is solid
Nitrogen campylobacter bacteria is the mixed microorganism system of dominant bacteria.It therefore, there is no need to the addition of external nutrient raw material.
2, realize that environmental protection and water resource are recycled.Traditional extracts alginates life from the marine browns such as kelp, bulk kelp
Production. art will generate a large amount of production waste water, however, patent of the present invention is using dirty organic pollutants as nutrient source, in algae
During hydrochlorate produces, the alginates of high value, but also the water outlet through hyperfiltration membrane assembly are not only recycled, water returns in being used as
It receives and utilizes.
3, the alginates of orientation regulation and control synthesis specified molecular weight and structure.It is traditional from the marine browns such as kelp, bulk kelp
It extracts in alginic acid technology of threonates, brown alga growth is easy to be influenced by natural environmental conditions such as seasons, however patent of the present invention is adopted
With microorganism mixed bacteria culture biotechnology, by adjusting suitable environmental condition, culture can secrete specific alginates
Using pseudomonas and azotobacter bacterium as the mixed microorganism system of dominant bacteria.
4, microorganism existing forms in microorganism reactor, activated sludge, the biology being not limited in sewage treatment field
It is any in film, aerobic particle mud and anaerobic grain sludge, but with can biosynthesis alginates pseudomonas with
Azotobacter bacterium is the mixed microorganism reaction system of flora.
5, it in alkali cleaning dissolution reactor provided in an embodiment of the present invention, is not limited to add highly basic in the reactor, as long as energy
It converts the non-solubility mucilage secretion in reactor to solubilised state and does not destroy the substance of the molecular structure of mucilage secretion
It all can serve as additive.
6, micro-filtration membrane aperture in the separated type micro-filtration membrane module and integral type micro-filtration membrane module that are used in the embodiment of the present invention
Size, it is selected according to the size of cell body and its fragment and inorganic particle to be removed in Practical Project.
7, in the hyperfiltration membrane assembly used in the embodiment of the present invention ultrafiltration membrane aperture size, it is dense according to being waited in Practical Project
Contract purification Extracellular polymers molecular weight and select.
The method and equipment that alginates are synthesized in sewage disposal process provided in an embodiment of the present invention, are applicable not only to algae
Hydrochlorate, and can be used in other EPS recycling, such as the biology of polysaccharide, polysaccharide, protein, nucleic acid, lipid exocytosis is big
Molecular substance；Using sewage as organic nutrition source, the microorganism of culture and algae be not limited to pseudomonas of the present invention with
Azotobacter bacterium, huge ocean brown algae, freshwater microalgae, as long as other sides that alginates are produced using sewage as nutrient source
Method belongs to the scope of the present invention with technique；Microorganism existing forms in microorganism reactor, are not limited to sewage treatment field
In activated sludge, biomembrane, any in aerobic particle mud and anaerobic grain sludge, but with can biosynthesis alginic acid
The pseudomonas of salt and the mixed microorganism reaction system that nitrogen-fixing bacteria are flora.
Finally it should be noted that：Above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation；Although the present invention is described in detail referring to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It can still modify to the technical solution recorded in previous embodiment, or to which part or all technical features into
Row equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (6)
1. a kind of method for synthesizing alginates in sewage disposal process, it is characterised in that：Include the following steps：
S1：By in sewage discharge to microorganism reactor, under suitable environmental condition, the metabolism through microorganism,
Organic pollution is degraded, and microorganism secretion alginates；
S2：Muddy water in microorganism reactor containing a large amount of alginates flows into alkali cleaning dissolution reactor；Further include to alkali
Wash addition NaOH, KOH or Na in dissolution reactor2CO3Highly basic, to adjust pH value in reactor, make in alkali cleaning dissolution reactor with
Alginates existing for non-solubilised state are transformed into soluble alginates with alginic acid；
S3：Muddy water in alkali cleaning dissolution reactor containing resolvability alginates, flows into hyperfiltration membrane assembly, dissolubility algae
Acid salt solution is after hyperfiltration membrane assembly detaches, and water recycles during water outlet is used as, and alginate soln is concentrated, into follow-up algae
In hydrochlorate extraction process；Wherein：Muddy water in the alkali cleaning dissolution reactor containing resolvability alginates first flow into point
It sets in declining filter membrane component, flows into hyperfiltration membrane assembly again later, separated type micro-filtration membrane module is dissolved for retaining from alkali cleaning
Body containing microbial cell and its fragment in reactor outflow muddy water and inorganic particle；It is provided in the alkali cleaning dissolution reactor
Integral type micro-filtration membrane module, for retaining microbial cell body and its fragment and inorganic particle in alkali cleaning dissolution reactor.
2. the method for synthesizing alginates in sewage disposal process according to claim 1, which is characterized in that the separated type
Micro-filtration membrane module and the isolated body containing microbial cell of integral type micro-filtration membrane module and its fragment and inorganic particle it is highly concentrated
Suspension is spent to be discharged as residue.
3. the method for synthesizing alginates in sewage disposal process according to claim 1, which is characterized in that the step S2
In alkali cleaning dissolution reactor in, acted on through gravitational settling, the sediment containing microbial bacterial, it is anti-that a part is back to microorganism
It answers in device, to adjust microbial biomass therein；A part is discharged as residue.
4. the method for synthesizing alginates in sewage disposal process according to claim 1, which is characterized in that the step S1
In sewage include city planting ductwork discharge sewage or industrial production discharge the waste water containing biodegradable organic.
5. the equipment for synthesizing alginates in a kind of sewage disposal process, which is characterized in that dissolved including microorganism reactor, alkali cleaning
Reactor and hyperfiltration membrane assembly, the alkali cleaning dissolution reactor respectively with the microorganism reactor and the hyperfiltration membrane assembly
It is connected；Further include separated type micro-filtration membrane module, the separated type micro-filtration membrane module respectively with alkali cleaning dissolution reactor and described
Hyperfiltration membrane assembly is connected.
6. the equipment for synthesizing alginates in sewage disposal process according to claim 5, which is characterized in that further include integral type
Micro-filtration membrane module, the integral type micro-filtration membrane module are arranged in the alkali cleaning dissolution reactor, the integral type microfiltration membranes group
Part is connected with the hyperfiltration membrane assembly.
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Citations (5)
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|---|---|---|---|---|
| JPH07155795A (en) * | 1993-11-30 | 1995-06-20 | Tsurumi Mfg Co Ltd | Sludge granulating system |
| CN101186655A (en) * | 2007-11-26 | 2008-05-28 | 中国海洋大学 | Method for extracting bacteria alginate |
| CN103827288A (en) * | 2011-09-09 | 2014-05-28 | 株式会社钟化 | Method for cultivating seaweed and method for producing alginic acid-containing composition |
| CN104311698A (en) * | 2014-11-03 | 2015-01-28 | 青岛海百合生物技术有限公司 | Kelp deep processing method |
| CN104774827A (en) * | 2015-03-23 | 2015-07-15 | 集美大学 | Method for preparing alginate lyase from abalone internal organs |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07155795A (en) * | 1993-11-30 | 1995-06-20 | Tsurumi Mfg Co Ltd | Sludge granulating system |
| CN101186655A (en) * | 2007-11-26 | 2008-05-28 | 中国海洋大学 | Method for extracting bacteria alginate |
| CN103827288A (en) * | 2011-09-09 | 2014-05-28 | 株式会社钟化 | Method for cultivating seaweed and method for producing alginic acid-containing composition |
| CN104311698A (en) * | 2014-11-03 | 2015-01-28 | 青岛海百合生物技术有限公司 | Kelp deep processing method |
| CN104774827A (en) * | 2015-03-23 | 2015-07-15 | 集美大学 | Method for preparing alginate lyase from abalone internal organs |
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