CN104386875B - A kind for the treatment of process of Sodium Glutamate fermented waste fluid - Google Patents

A kind for the treatment of process of Sodium Glutamate fermented waste fluid Download PDF

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CN104386875B
CN104386875B CN201410501831.7A CN201410501831A CN104386875B CN 104386875 B CN104386875 B CN 104386875B CN 201410501831 A CN201410501831 A CN 201410501831A CN 104386875 B CN104386875 B CN 104386875B
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CN104386875A (en
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董力青
丁兆堂
郭永波
莫密言
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Hulunbuir Northeast Fufeng Biotechnology Co Ltd
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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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C227/14—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing already amino and carboxyl groups or derivatives thereof
    • C07C227/18—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing already amino and carboxyl groups or derivatives thereof by reactions involving amino or carboxyl groups, e.g. hydrolysis of esters or amides, by formation of halides, salts or esters
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C227/38—Separation; Purification; Stabilisation; Use of additives
    • C07C227/40—Separation; Purification
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • 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
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F2001/5218—Crystallization
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

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  • Chemical & Material Sciences (AREA)
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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
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  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
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  • Preparation Of Compounds By Using Micro-Organisms (AREA)
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Abstract

The invention belongs to biological fermentation industry Sodium Glutamate field of waste liquid treatment, disclose a kind for the treatment of process of Sodium Glutamate fermented waste fluid, it comprises the steps: the fermented liquid of step (1) preparation containing Sodium Glutamate, step (2) is filtered, step (3) decolouring, concentrated and primary crystallization, step (4) secondary crystal, step (5) sewage disposal and the preparation of step (6) feed.Treatment process of the present invention significantly reduces into product cost, and production process is easy and simple to handle, alleviates sewage disposal burden, and brings good economic benefit and environmental benefit.

Description

A kind for the treatment of process of Sodium Glutamate fermented waste fluid
Technical field
The present invention relates to biological fermentation industry Sodium Glutamate field of waste liquid treatment, a kind for the treatment of process of Sodium Glutamate fermented waste fluid is specifically provided.
Background technology
Sodium Glutamate chemical name alpha-amino group pentanedioic acid one sodium, be a kind of salt formed by sodium ion and glutamate ion, its Glutamic Acid is a seed amino acid, and sodium is a kind of metallic element.The main component of food flavouring monosodium glutamate conventional in life is exactly Sodium Glutamate.Monosodium glutamate is seasonings conventional in daily life, can increase the delicate flavour of food, is conducive to improving human body to the digestibility of food.In addition, Sodium Glutamate has again very important function, is widely used in food, medicine, industry and the field such as agriculture.
Along with Economic development and technical progress, China has become glutamate production and demand big country, and in glutamate production process fermentation liquor etc. electricity, from friendship extract after can produce a large amount of high-concentration waste liquid, and be rich in solid matter suspended substance, plurality of inorganic salt, organic acid, vitamin H and the reducing sugars etc. such as amino acid, thalline, protein in this waste liquid, there is the feature of " five high low ", i.e. COD, BOD, COD, Cl+SO 4, NH 3-N, thalline content are high, and pH is low, and intractability is large, are one of greatest contamination source in L-glutamic acid production.At present, glutamate production enterprise generally adopts polyacrylamide to flocculate, filter press fox extracting thallus protein, and clear liquid is because of containing a large amount of ammonium sulfate, and after concentrated, spray granulating produces fertilizer (fermentation producing ammonium sulfate byproduct).
But along with chemical fertilizer industry production capacity is expanded rapidly, agricultural needs amount declines, and the ammonium sulphate content produced is low, sales difficulty, result in product and overstocks in a large number, has a strong impact on stability and the persistence of production in addition.Meanwhile, the flue gas produced in spray granulating process, discharges and forms a large amount of white " smog ", containing pollutents such as flue dust, and with unhappy smell, cause very large impact to environment.Universities and colleges, scientific research institutions, L-glutamic acid manufacturing enterprise have made large quantity research around this problem, are still difficult to solve the waste water that produces and smoke gas treatment problem, seriously constrain the development of monosodium glutamate industry.Therefore, how to process glutamic acid-fermented waste liquid, reduce waste water and smoke pollution, become the technical problem that this area needs solution badly.
Summary of the invention
The object of the invention is the deficiency for traditional technology, provide a kind for the treatment of process of Sodium Glutamate fermented waste fluid, it significantly reduces into product cost, production process is easy and simple to handle, stable and reliable product quality, meets the requirement of comprehensive utilization of resources, energy-saving and emission-reduction, decreases discharging of waste liquid simultaneously, alleviate sewage disposal burden, bring huge economic benefit and environmental benefit.
In order to realize the object of the invention, adopt following technical scheme:
A kind for the treatment of process of Sodium Glutamate fermented waste fluid, comprise the steps: the fermented liquid of step (1) preparation containing Sodium Glutamate, step (2) is filtered, step (3) decolouring, concentrated and primary crystallization, step (4) secondary crystal, step (5) sewage disposal and the preparation of step (6) feed;
Skill comprises the steps: particularly
Step (1) preparation is containing the fermented liquid of Sodium Glutamate: in glutami acid fermentation liquor, add liquefied ammonia and sodium hydroxide reacts simultaneously, and the mol ratio of liquefied ammonia and sodium hydroxide is 2:1, obtains the fermented liquid containing Sodium Glutamate; Step (2) is filtered: the fermentation liquor micro-filtrate membrane filtration after step (1) process is degerming, collects trapped substance and filtered solution respectively; Then filtered solution is proceeded ultrafiltration membrance filter, collect concentrated solution and penetrating fluid; Above-mentioned trapped substance and concentrated solution are merged into mixed liquor for subsequent use; Wherein, microfiltration membrane is inorganic ceramic film, and molecular weight cut-off is 2000MW, and micro-filtration temperature is 40 DEG C; Ultra-filtration membrane molecular weight cut-off is 300MW, and ultrafiltrate temperature is 40 DEG C;
Step (3) decolouring, concentrated and primary crystallization: step (2) gained penetrating fluid pumps into bleacher and carries out desolventing technology, the gac of penetrating fluid quality 0.5% is added in bleacher, the temperature controlled in bleacher is 45-50 DEG C, decolour after 30 points and concentrate, then primary crystallization, centrifugal acquisition Sodium Glutamate coarse crystal and a mother liquor;
Step (4) secondary crystal: Sodium Glutamate coarse crystal is dissolved, secondary crystal, centrifugally obtain refining Sodium Glutamate and secondary mother liquid;
Step (5) sewage disposal: by a mother liquor and secondary mother liquid mixing, natural subsidence solid-liquid separation, obtains sediment and supernatant liquor, discharge after adding composite fungus agent process in supernatant liquor;
Prepared by step (6) feed: step (2) gained mixed liquor and step (5) gained throw out are merged and obtain liquid A, then in liquid A, wheat stalk powder, dregs of beans, peanut hull meal and wheat bran is added, 1000-1200 turns/and min stirs 4-5min, pass into steam subsequently and be warming up to 100 DEG C, distill 30 minutes; Then dried by distillment, pulverizer is pulverized and be get final product; Wherein, wheat stalk powder, dregs of beans, peanut hull meal and wheat bran account for the 8-10% of liquid A quality respectively, 5-6%, 3-4% and 1-2%.
Wherein, in described step (1), the total addition level of liquefied ammonia and sodium hydroxide and the mol ratio of glutami acid fermentation liquor Glutamic Acid are 1:1;
In described step (3), concentrated parameter is: temperature 60-70 DEG C, and vacuum tightness is-0.1kpa;
In described step (5), described in be treated to: add composite fungus agent 30 grams by every cubic metre of liquid at every turn, add 1 every day, add one week continuously, finally leave standstill 3 days, by liquid discharge.
The raw material bacterium comprising following weight part of described composite fungus agent:
Rhodococcus 7 parts, bacillus megaterium 10 parts, Paracoccus denitrificans 6 parts, Phanerochaete chrysosporium 8 parts; Aspergillus niger 3 parts, nitrococcus 1 part, Acidithiobacillus ferrooxidans strain GF 3 parts.
The beneficial effect that the present invention obtains mainly comprises:
1. the invention provides a kind of composite fungus agent, it is specially for the waste water of monosodium glutamate preparation process, by the various bacterial classification that can form dominant microflora, be mixed with high-efficiency microorganism preparation, be added in Waste Water Treatment by a certain amount of, accelerate the degraded of microbe, to improve the biological treatment efficiency of system, ensure system stable operation.It contains multiple microorganism Recalcitrant chemicals being had to excellent degradation capability, reasonable compatibility between each bacterial classification, and symbiosis is coordinated, mutual not antagonism, active high, biomass is large, breeding is fast, adds in Waste Water Treatment, has good degradation effect to macromole, hard-degraded substance and COD.Be suitable for the application and prepare the process of monosodium glutamate method generation discharge of wastewater, the process water yield and water quality treatment can be improved, reduce working cost, promote qualified discharge.
2. Sodium Glutamate zymotechnique of the present invention, its main points are to add liquefied ammonia and sodium hydroxide solution in fermented liquid simultaneously, according to the product acid process determination liquefied ammonia of fermented liquid and the add-on of sodium hydroxide, replace part ammonia with sodium hydroxide solution during the fermentation, no longer participate in the pH value regulating fermented liquid.And sodium hydroxide is for ensureing the environment being suitable for growth, with the pH value of this stable fermented liquid, ensure that the pH value of fermented liquid is 6.9-7.1.Produced glutamic acid rotating is changed into Sodium Glutamate by sodium hydroxide, obtains final object product.
3. present invention process had both avoided the waste of raw material, and saved cost, whole process does not all use sulfuric acid, had produced again Sodium Glutamate and high protein feed product, had brought rich profit to enterprise, had reversed the loss present situation of amino acid glutamate production enterprise.
Embodiment
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the application's specific embodiment, carry out clearly, intactly describing to the present invention, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Embodiment 1
A treatment process for Sodium Glutamate fermented waste fluid, it comprises the steps:
(1) in glutami acid fermentation liquor, add liquefied ammonia and sodium hydroxide reacts, the mol ratio of liquefied ammonia and sodium hydroxide is 2:1, obtains the fermented liquid containing Sodium Glutamate simultaneously; Wherein, the total addition level of liquefied ammonia+sodium hydroxide and the mol ratio of glutami acid fermentation liquor Glutamic Acid are 1:1;
(2) the fermentation liquor micro-filtrate membrane filtration after step (1) process is degerming, collects trapped substance and filtered solution respectively; Then filtered solution is proceeded supermembrane to filter, collect concentrated solution and penetrating fluid; Above-mentioned trapped substance and concentrated solution are merged into mixed liquor for subsequent use; Wherein, microfiltration membrane is inorganic ceramic film, and molecular weight cut-off is 2000MW, and micro-filtration temperature is 40 DEG C; Ultra-filtration membrane molecular weight cut-off is 300MW, and ultrafiltrate temperature is 40 DEG C;
(3) step (2) gained penetrating fluid pumps into bleacher and carries out desolventing technology, add the gac of penetrating fluid quality 0.5% in bleacher, the temperature controlled in bleacher is 45 DEG C, decolours after 30 points and concentrates, then primary crystallization, centrifugal acquisition Sodium Glutamate coarse crystal and a mother liquor; Described concentrated parameter is: temperature 60 C, and vacuum tightness is-0.1kpa;
(4) Sodium Glutamate coarse crystal is dissolved, secondary crystal, centrifugally obtain refining Sodium Glutamate and secondary mother liquid;
(5) by a mother liquor and secondary mother liquid mixing, natural subsidence solid-liquid separation, obtains sediment and supernatant liquor, is entered by supernatant liquor and enter Sewage treatment systems, discharges after adding composite fungus agent process; Describedly to be treated to: add composite fungus agent 30 grams by every cubic metre of liquid at every turn, add 1 every day, add one week continuously, finally to leave standstill 3 days, by liquid discharge;
(6) step (2) gained mixed liquor and the merging of step (5) gained throw out are obtained liquid A, then in liquid A, wheat stalk powder, dregs of beans, peanut hull meal and wheat bran is added, 1000-1200 turns/and min stirs 4min, passes into steam subsequently and be warming up to 100 DEG C, distills 30 minutes; Then dried by distillment, pulverizer is pulverized and is obtained feed; Wherein, wheat stalk powder, dregs of beans, peanut hull meal and wheat bran account for the 8-10% of liquid A quality respectively, 5-6%, 3-4% and 1-2%.After testing, this feedstuff protein content 39.2%, inorganic mineral content 4.7%, amino acid composition content 5.9%, all the other are starch, glucide and other materials on a small quantity.
The raw material bacterium comprising following weight part of above-mentioned composite fungus agent:
Rhodococcus 7 parts, bacillus megaterium 10 parts, Paracoccus denitrificans 6 parts, Phanerochaete chrysosporium 8 parts; Aspergillus niger 3 parts, nitrococcus 1 part, Acidithiobacillus ferrooxidans strain GF 3 parts;
Described rhodococcus is specially rhodococcus (Rhodococcusrhodochrous) ATCC15906; (see document CloningandCharacterizationofBenzoateCatabolicGenesintheG ram-PositivePolychlorinatedBiphenylDegraderRhodococcussp .StrainRHA1, J.Bacteriol.November2001);
Described bacillus megaterium specifically can be bacillus megaterium (Bacillusmegatherium) CGMCCNo:2267 (CN101215532);
Described Paracoccus denitrificans is specially Paracoccus denitrificans (Paracoccusdenitrificans) ATCC13543(see document Genescodingforrespiratorycomplexesmaponallthreechromosom esoftheParacoccusdenitrificansgenome, ArchivesofMicrobiology, 1998);
Described Phanerochaete chrysosporium be Phanerochaete chrysosporium (Phanerochaetechrysosporium) ATCC24725(see document APPLIEDANDENVIRONMENTALMICROBIOLOGY, Feb1994, p709-714)
Described aspergillus niger is specially aspergillus niger (Aspergillusnige) CCTCCNo:M206034; (CN1924000)
Described nitrococcus is specially nitrococcus (Nitrosomonaseuropaea) ATCC19718(see document CompleteGenomeSequenceoftheAmmonia-OxidizingBacteriumand ObligateChemolithoautotrophNitrosomonaseuropaea, and 2003);
Described Acidithiobacillus ferrooxidans strain GF is Acidithiobacillus ferrooxidans strain GF (Acidithiobacillusferrooxidans) ATCC53993(visible document AgenomicislandprovidesAcidithiobacillusferrooxidansATCC5 3993additionalcopperresistance:apossiblecompetitiveadvan tage.ApplMicrobiolBiotechnol.2011);
Above each raw material bacterium is all conveniently cultured to concentration 1 × 10 8individual/gram, the bacterium liquid cultivated is mixed to get mixed bacteria liquid according to weight part; By mixed bacteria liquid and the diatomite weight ratio mixing and stirring according to 1:2,25 DEG C are drying to obtain, and after dry, water content is 15%.
Embodiment 2
A treatment process for Sodium Glutamate fermented waste fluid, it comprises the steps:
(1) in glutami acid fermentation liquor, add liquefied ammonia and sodium hydroxide reacts, the mol ratio of liquefied ammonia and sodium hydroxide is 2:1, obtains the fermented liquid containing Sodium Glutamate simultaneously; Wherein, the total addition level of liquefied ammonia+sodium hydroxide and the mol ratio of glutami acid fermentation liquor Glutamic Acid are 1:1;
(2) the fermentation liquor micro-filtrate membrane filtration after step (1) process is degerming, collects trapped substance and filtered solution respectively; Then filtered solution is proceeded supermembrane to filter, collect concentrated solution and penetrating fluid; Above-mentioned trapped substance and concentrated solution are merged into mixed liquor for subsequent use; Wherein, microfiltration membrane is inorganic ceramic film, and molecular weight cut-off is 2000MW, and micro-filtration temperature is 40 DEG C; Ultra-filtration membrane molecular weight cut-off is 300MW, and ultrafiltrate temperature is 40 DEG C;
(3) step (2) gained penetrating fluid pumps into bleacher and carries out desolventing technology, add the gac of penetrating fluid quality 0.5% in bleacher, the temperature controlled in bleacher is 50 DEG C, decolours after 30 points and concentrates, then primary crystallization, centrifugal acquisition Sodium Glutamate coarse crystal and a mother liquor; Described concentrated parameter is: temperature 70 C, and vacuum tightness is-0.1kpa;
(4) Sodium Glutamate coarse crystal is dissolved, secondary crystal, centrifugally obtain refining Sodium Glutamate and secondary mother liquid;
(5) by a mother liquor and secondary mother liquid mixing, natural subsidence solid-liquid separation, obtains sediment and supernatant liquor, is entered by supernatant liquor and enter Sewage treatment systems, discharges after adding composite fungus agent process; Describedly to be treated to: add composite fungus agent 30 grams by every cubic metre of liquid at every turn, add 1 every day, add one week continuously, finally to leave standstill 3 days, by liquid discharge;
(6) step (2) gained mixed liquor and the merging of step (5) gained throw out are obtained liquid A, then in liquid A, wheat stalk powder, dregs of beans, peanut hull meal and wheat bran is added, 1200 turns/min stirs 5min, passes into steam subsequently and is warming up to 100 DEG C, distills 30 minutes; Then dried by distillment, pulverizer is pulverized and be get final product; Wherein, wheat stalk powder, dregs of beans, peanut hull meal and wheat bran account for 10%, 5%, 4% and 2% of liquid A quality respectively.After testing, this feedstuff protein content 35.1%, inorganic mineral content 5.6%, lysine component content 6.1%, all the other are starch, glucide and other amino acid on a small quantity.
The raw material bacterium comprising following weight part of above-mentioned composite fungus agent:
Rhodococcus 7 parts, bacillus megaterium 10 parts, Paracoccus denitrificans 6 parts, Phanerochaete chrysosporium 8 parts; Aspergillus niger 3 parts, nitrococcus 1 part, Acidithiobacillus ferrooxidans strain GF 3 parts;
Above each raw material bacterium is all conveniently cultured to concentration 1 × 10 8individual/gram, the bacterium liquid cultivated is mixed to get mixed bacteria liquid according to weight part; By liquid bacteria liquid and the diatomite weight ratio mixing and stirring according to 1:2,25 DEG C are drying to obtain, and after dry, water content is 20%.
Embodiment 3
Get glutamate production fermentation plant waste water, process according to the technique of embodiment 1, get 100L water sample, detect the numerical value of each pollutent; Then add composite fungus agent 30 grams by every cubic metre of waste water at every turn, add 1 every day, add one week continuously, leave standstill three days, detect the numerical value of each pollutent, find that waste water after treatment reaches emission standard completely.Numerical value before and after process is in table 1:
Table 1
COD mg/L Ammonia nitrogen mg/L
Before process 3846 297
After process 87 7.3
What more than enumerate is only best specific embodiment of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.

Claims (1)

1. a treatment process for Sodium Glutamate fermented waste fluid, is characterized in that, described technique comprises the steps:
Step (1) preparation is containing the fermented liquid of Sodium Glutamate: in glutami acid fermentation liquor, add liquefied ammonia and sodium hydroxide reacts simultaneously, and the mol ratio of liquefied ammonia and sodium hydroxide is 2:1, obtains the fermented liquid containing Sodium Glutamate;
Step (2) is filtered: the fermentation liquor micro-filtrate membrane filtration that step (1) gained contains Sodium Glutamate is degerming, collects trapped substance and filtered solution respectively; Then filtered solution is proceeded ultrafiltration membrance filter, collect concentrated solution and penetrating fluid; Above-mentioned trapped substance and concentrated solution are merged into mixed liquor for subsequent use; Wherein, microfiltration membrane is inorganic ceramic film, and molecular weight cut-off is 2000MW, and micro-filtration temperature is 40 DEG C; Ultra-filtration membrane molecular weight cut-off is 300MW, and ultrafiltrate temperature is 40 DEG C;
Step (3) decolouring, concentrated and primary crystallization: step (2) gained penetrating fluid pumps into bleacher and carries out desolventing technology, the gac accounting for penetrating fluid quality 0.5% is added in bleacher, the temperature controlled in bleacher is 45-50 DEG C, decolour after 30 points and concentrate, then primary crystallization, centrifugal acquisition Sodium Glutamate coarse crystal and a mother liquor;
Step (4) secondary crystal: Sodium Glutamate coarse crystal is dissolved, secondary crystal, centrifugally obtain refining Sodium Glutamate and secondary mother liquid;
Step (5) sewage disposal: by a mother liquor and secondary mother liquid mixing, solid-liquid separation, obtains sediment and supernatant liquor, discharge after adding composite fungus agent process in supernatant liquor;
Prepared by step (6) feed: step (2) gained mixed liquor and step (5) gained sediment are merged and obtain liquid A, then in liquid A, wheat stalk powder, dregs of beans, peanut hull meal and wheat bran is added, 1000-1200 turns/and min stirs 4-5min, pass into steam subsequently and be warming up to 100 DEG C, distill 30 minutes; Then dried by distillment, pulverizer is pulverized and be get final product; Wherein, wheat stalk powder, dregs of beans, peanut hull meal and wheat bran account for the 8-10% of liquid A quality respectively, 5-6%, 3-4% and 1-2%;
In described step (1), the total addition level of liquefied ammonia and sodium hydroxide and the mol ratio of glutami acid fermentation liquor Glutamic Acid are 1:1;
In described step (3), concentrated parameter is: temperature 60-70 DEG C, and vacuum tightness is-0.1kpa;
In described step (5), described in be treated to: add composite fungus agent 30 grams by every cubic metre of liquid at every turn, add 1 every day, add one week continuously, finally leave standstill 3 days, by liquid discharge;
The raw material bacterium comprising following weight part of described composite fungus agent:
Rhodococcus 7 parts, bacillus megaterium 10 parts, Paracoccus denitrificans 6 parts, Phanerochaete chrysosporium 8 parts; Aspergillus niger 3 parts, nitrococcus 1 part, Acidithiobacillus ferrooxidans strain GF 3 parts.
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CN105063160A (en) * 2015-09-19 2015-11-18 内蒙古阜丰生物科技有限公司 Environment-friendly process for preparing monosodium glutamate through concentration-isoelectric process
CN105039488A (en) * 2015-09-20 2015-11-11 呼伦贝尔东北阜丰生物科技有限公司 Method for extracting gourmet powder through concentration isoelectric point technology
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