CN1792862A - Integreted tech., or treating yellow ginger processing and waste water - Google Patents
Integreted tech., or treating yellow ginger processing and waste water Download PDFInfo
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- CN1792862A CN1792862A CNA2006100001620A CN200610000162A CN1792862A CN 1792862 A CN1792862 A CN 1792862A CN A2006100001620 A CNA2006100001620 A CN A2006100001620A CN 200610000162 A CN200610000162 A CN 200610000162A CN 1792862 A CN1792862 A CN 1792862A
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Abstract
An integrated process for preparing the products from yam and treating its sewage includes such steps as physical separation to obtain cellulose and starch paste, liquefying and saccharifying the starch paste to obtain sugar dreg, fermenting and acidolyzing to obtain saponin, transferring sugar liquid to obtain glocose, using the hydrolyzed sewage to prepare Bacillus thuringienis insecticide, and treating sewage.
Description
Technical field
The invention belongs to mass treatment technology, specifically be worked into the integral process of wastewater treatment from yellow ginger.To enter the pollutent of sewage in the traditional processing technology---yellow ginger Mierocrystalline cellulose, starch slurry make full use of, and accomplish that the utilization of resources is abundant, cleaner production is pollution-free.This technology also obtains byproduct Mierocrystalline cellulose, glucose, bacillus thuringiensis microbial pesticide except obtaining the major product saponin; Carry out the processing of yellow ginger waste water, solved not only that this industry is seriously polluted, the difficult problem of the wasting of resources, also increased the industry added value.
Background technology
Yellow ginger is the peculiar kind of China, the formal name used at school Rhizome of Peltate Yam, and medicinal plant, main economic worth is to utilize its root stock to extract the diosgenin of being described as " gold in the medicine " by the world, is used to produce the steroid hormone of kind more than 300 medicine.By 2003, China was except that Tibet, and other each province, the equal artificial growth yellow ginger in city estimate that whole nation plantation yellow ginger area surpasses 1,600,000 mu, and turmeric saponin manufacturing enterprise surpasses 200 families, mainly concentrates on the Shaanxi Province and the Hubei Province of Hanjiang River.
China mainly is extensive production utilization to the processing and utilization of yellow ginger at present, mainly extracts content and only accounts for 2% saponin; And account for that materials such as 98% starch, Mierocrystalline cellulose, pigment, Weibull are dropped or run off with factory effluent, this has not only caused the great wasting of resources and financial loss, the more important thing is to have caused serious water to pollute, and has restricted local Economic development.The production of China saponin, the basic at present acid system production technique that adopts, 1 ton of saponin of this explained hereafter needs 130～150 tons of fresh gingers, consumes 50～60 tons in 15～20 tons of consumption marks of 35% technical hydrochloric acid coal, 500 tons of waste discharges; Pollutent acidity is big in the waste discharge, concentration is high, pH1.0～1.5, and more than the COD concentration 30000mg/L, NH
3The about 300mg/L of-N, pollution level is only second to papermaking enterprise, and sewage discharge exerts heavy pressures on for local water protection, and ecology has been caused great destruction.Acid is high because yellow ginger acidolysis waste liquid contains, colloid is heavy, pigment is dense, foam is many, adopts existing contamination governing method extremely difficult up to standard; The height of pollution treatment working cost in addition, saponin manufacturer is difficult to bear, and causes manufacturer will float full white foam, and give out the direct discharging of waste water of acid smell, cause near the water port 1 kilometer with in the interior waters, aquatic organism is close to disappearance, and the polluted river people and animals can't drink.
In addition, in order to guarantee the high and stable yields of yellow ginger plantation, people mainly adopt chemical pesticide control disease pest and weed always for a long time.Chemical pesticide has has also killed and wounded natural enemy and other beneficial organism in kill pests, destroyed the eubiosis, causes that insect is rampant more.Simultaneously, the use of chemical pesticide not only makes pesticide residue increase in the yellow ginger product, has influenced the quality of product, and has caused soil, water body and atmospheric pollution.
The area, Shiyan that the yellow ginger industry is flourish, the present contradiction that just is faced with industry development and environment protection, and owing to the water quality safety to the south water to north produces serious influence, it is urgent further that the solution of contradiction seems.But in order to guarantee this source that mainly increases income of the peasant of this area, country still can reach waste water treatment enterprise's Close All of emission standard at present.Trade effluent and agricultural residual problem that the yellow ginger processing industry produces have become the instant key subjects that south water to north work centerline watershed needs to be resolved hurrily so far.
Because the singularity of China aspect the yellow ginger processing industry, abroad the modern technique that can directly use for reference in this respect is actually rare.In recent years, Chinese scholar has been carried out useful exploration around the yellow ginger processing technology, has also accumulated a large amount of experiences.
Context of detection is extracted in laboratory at yellow ginger, has proposed the test technology of improved sulfuric acid-chloroform extraction saponin, has set up the test method of spectrophotometry detection saponin.Aspect the process modification of yellow ginger processing, proposed fermentation-acid-hydrolysis method and extracted the method for saponin.This method with fermented product with in the alkaline matter and substituted in the conventional acid hydrolysis method and to adopt massive laundering to neutral, saved water resources, simultaneously to starch hydrolysate---glucose reclaims, reached the comprehensive utilization of resource, and the extraction yield of comparing sapogenin with the conventional acid hydrolysis method also improves greatly, is the at present industrial method that generally adopts.Yet, the ionic concn of solution is bigger in the leaching process of glucose, the extraction of affecting glucose, so also have in the acid hydrolysis process adopt sulfuric acid replace hydrochloric acid, in and the time adopt in the liming and technology, can reduce the saltiness of liquid glucose like this, improve liquid glucose purified economy.On the other hand, because filter cake increases, reduced the extraction yield of sapogenin.In addition, also relevant for the exploration of enzymolysis-acid-hydrolysis method etc.Enzymolysis-acid-hydrolysis method is to utilize biological method and chemical process to combine to extract sapogenin, studies show that first enzymolysis after acid hydrolysis reach about 28.80% than direct acid-hydrolyzed saponin rate of recovery increase rate.Fermentation-acid-hydrolysis method and enzymolysis-acid-hydrolysis method all are the comprehensive utilizations of carrying out under the situation that as far as possible improves the diosgenin extraction yield resource, when obtaining diosgenin to yellow ginger in starch transform.Yet the extraction of sapogenin still adopts organic solvent to carry out, and when environment is polluted, also exists hidden danger aspect food safety.
In the development and use of yellow ginger and clean aspect the production, organic solvent extractionprocess is adopted in some research, has obtained the natural yellow pigment except that saponin.Adopt the research of the direct separating technology of turmeric saponin (promptly adopting physical method for separation saponin, starch and Mierocrystalline cellulose) also to make progress, this technology can make yellow ginger production reduce blowdown 90%.The patent of related resource comprehensive utilization aspect, cleaning technology method (publication number: 1535973) as coproduction diosgenin, glucose, isolate Mierocrystalline cellulose, starch (publication number: 1587274) etc. earlier by physical partition method, these methods have had the end of looking askance of cleaner production, but only being confined to of having utilized starch, then the separating of concern and Mierocrystalline cellulose, starch just that has, do not hold production technique on the whole.And the past extraction means of using organic solvent as saponin, inabundant excavation material reduce more and the new extraction process of resource reutilization.In addition, adopt supercritical CO
2The saponin that abstraction technique extracts in the yellow ginger is a promising extractive technique that cleans, but still has some technical problems to solve and perfect.
Aspect the pollution control relevant with yellow ginger processing, proposed by the saponin in the organic extraction yellow ginger waste liquid, improve saponin output to reduce the imagination of pollution level.According to the thought of cleaner production, to the waste water that yellow ginger is produced, can take to extract demineralizing acid/fermented distilled alcohol, the aerobic method that combines of ABR-anaerobism and SBR reduces the concentration of pollutent in the waste liquid; Handle for the yellow ginger processing waste water, the achievements in research such as process combination that diphasic anaerobic-aerobic-artificial swamp method is handled have been arranged.Alcohol (publication number: 1124776) is extracted in having of appearing in the newspapers in relevant patent aspect from waste liquid, utilize the yellow ginger residue to produce agricultural fertilizer (publication number: 1392120), from the yellow ginger waste hydrolyzed liquid, extract glucose (publication number: 1316523), produce residue with turmeric saponin and prepare gac (publication number: 1613758) etc.
From existing technology, the saponin extraction yield is usually less than 20%, in the acid hydrolysis process, have only the saponin about 2% to be utilized, remaining starch, pigment, Weibull are converted into organic pollutants such as carbohydrate and run off with factory effluent, lignocellulose then is not utilized fully, become the waste residue air storage at last, the overwhelming majority is discarded rots, and a spot ofly is taken as fuel combustion, because its calorific value is low, comparing its potential economic worth also is a kind of waste.In addition, resource consumption is big, seriously polluted in the existing method production process, the energy consumption height.Though the introducing of emerging technologies such as supercritical extraction is arranged, because of pretreatment condition harshness, technology are loaded down with trivial details, and do not obtain reliable and stable processing condition as yet, extraction yield is lower, and correlative study is also not mature enough.
In a word, the process modification that the past is continuous about yellow ginger Study on Processing Technology and application or before biasing toward perhaps lays particular emphasis on follow-up sewage disposal.In fact, theory from recycling economy, really the innovative technology that can tackle the problem at its root be that yellow ginger cleans and produces and the integrated technique of comprehensive utilization of resources, and research and development of this one side at present as yet not system carry out, have urgent science and social demand.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, provide a kind of and not only cleaned but also reasonably yellow ginger processing and wastewater treatment integral process thereof.The utilization circular economy concept, introduce exploitation of high value and comprehensive utilization of resources degree that new technology improves the yellow ginger resource, change existing yellow ginger complete processing present situation, solve industrial wastewater pollution, novel biopesticide is used in development, when guaranteeing increasing peasant income, solve local economy and environment conspicuous contradiction day by day, remove south water to north work centerline watershed water quality safety hidden danger, guarantee the smooth implementation of south water to north work centerline.
At seriously polluted, the wasting of resources problem that the yellow ginger processing industry exists at present, the present invention proposes a cover cleaner production integral process.The present invention can reduce acid, the water consumption of acid hydrolysis step, thereby reduces more than 90% of wastewater discharge, through follow-up trade effluent high-effective microorganism treatment process qualified discharge easily; In addition, the present invention has utilized 75% Mierocrystalline cellulose, 66% starch, and the solid waste amount also significantly reduces, really realized cleaning of production technique.The present invention is from the maximized angle of the yellow ginger utilization of resources, totally hold utilizing form and utilizing method of each resource from technology, except that extracting the major product saponin, also develop byproduct glucose, Mierocrystalline cellulose, bacillus thuringiensis microbial pesticide, all Products Development flow process compactnesses, continuous, integrated characteristic is obvious.
The object of the invention can realize in the following way: be worked into the integral process of wastewater treatment from yellow ginger, this technology is separated and is obtained Mierocrystalline cellulose, starch slurry, and further obtains saponin, glucose and bacillus thuringiensis microbial pesticide product; Wherein:
Adopt the physical partition method pre-treatment, get Mierocrystalline cellulose and starch slurry;
Sugared slag after the starch slurry liquefaction saccharification after the fermentation acid hydrolysis, extracts saponin;
Liquid glucose after the starch slurry liquefaction saccharification, the treated glucose that is converted into;
The yellow ginger waste hydrolyzed liquid is prepared the bacillus thuringiensis microbial pesticide;
Meanwhile, carry out the processing of yellow ginger waste water.
The technical process order is specific as follows:
1, pre-treatment
Physical method for separation is that the yellow ginger immersion was ground after 24 hours, and with 60 mesh sieve wet screenings, the screening water is 1: 2.5 with the ratio of soaking back yellow ginger quality, screen overflow mainly is a Mierocrystalline cellulose, recycle dry back, and screen underflow is a starch slurry, and starch slurry enters next step technology.
2, starch slurry bio-transformation
2.1 biological enzyme is converted into glucose with the starch slurry saccharification of liquefying
Biological enzyme is with yellow ginger starch slurry transforming glucose method, and the starch slurry with obtaining after the pre-treatment boils dissolving, and it is 6.3-6.7 that pH is regulated in cooling, and the α-Dian Fenmei consumption of every g starch slurry is 20U, 68-72 ℃ of water-bath vibration 1h; Cooling once more, the pH of saccharification link is 3.8-4.2, the saccharifying enzyme consumption of every g starch is 300U, 60 ℃ of water-bath vibration 8h, mixture centrifugation, h saccharification.After saccharification finishes, with the mixture centrifugation, obtain solids sugar slag, step process is handled and is extracted saponin after remaining, and obtains supernatant liquor-liquid glucose.
2.2 glucose preparation
Liquid glucose is heated to 80 ℃, keeps the 20min enzyme that goes out; Add Powdered Activated Carbon with the consumption of 1% (solid substance) then, under 80 ℃, pH=4.0 condition, stir decolouring 30min, filter; Filter the back with 2 times of column volume h
-1(BV) flow velocity at room temperature carries out 732 type positively charged ions respectively and 711 type anionresin desalinations remove common zwitterion, and respectively at any time with chrome black ton indicator and Silver Nitrate check removal effect; By lyophilize liquid glucose simmer down to 70% is taken out then, add small amount of deionized water, high-temperature digestion drops into 0.5% glucose crystal seed recrystallization, and final drying is to constant weight.
3, fermentation acid hydrolysis system is to the acid hydrolysis slag
Sugar slag fermentation acid hydrolysis process is to add composite bacterium powder in sugared slag, and bacterium powder consumption is every g sugar slag 0.02mg., fermentation is 48 hours in 33-37 ℃ of incubator; Regulate the pH value then to 0.4-0.6, place under 121～126 ℃ of conditions of high-pressure sterilizing pot and carry out acid hydrolysis 5h, regulate the pH value to neutrality, the centrifugal acid hydrolysis sugar slag that obtains, fermentation acid hydrolysis system is to the acid hydrolysis slag, and drying, and is standby.
4, supercritical extraction saponin
Supercritical extraction saponin technology places extraction kettle with the acid hydrolysis slag, and extraction solvent is CO
2, extracting pressure 19-21MPa, extraction temperature 59-61 ℃ is entrainment agent with 95% ethanol, behind quiet extraction 1h, the moving extraction 4h, product and solvent C O in 50 ℃ of separating stills
2Separate, obtain saponin.
5, the yellow ginger waste hydrolyzed liquid is produced the bacillus thuringiensis microbial pesticide
Adopt deep liquid fermentation process, to adding the nitrogenous source of 10-30g/L, the mineral salt of 0.2-1.5g/L, the defoamer of 1-5g/L through pretreated yellow ginger waste hydrolyzed liquid, in seeding tank or fermentor tank, sterilized 30-60 minute after stirring through 15 pounds of pressure and 121 ℃ of temperature, be cooled to 30-35 ℃ standby, used nitrogenous source is meant dregs of beans, peanut meal, rapeseed meal, fish meal, corn steep liquor, yeast powder and peptone etc.Then, to the fermentation of culture medium inoculated Bacillus thuringiensis, inoculum size 1-3%, fermented liquid carries out spraying drying again after high speed centrifugation concentrates, make the water ratio of product bacillus thuringiensis microbial pesticide be lower than 5%, helps prolonging the shelf time of product.
6, the high-effective microorganism treatment technology of trade effluent
Adopt " neutralization/precipitation-acidication-materialization desulfurization-methane fermentation-immobilized microorganism-BAF (G-BAF) " combination process, yellow ginger waste water is through neutralization and the precipitating action of CaO, and adjust pH is to approaching neutral.After adding phosphoric acid salt, waste water enters reactor for hydrolysis and acidification, after intermediary materialization processing removal hydrogen sulfide and sulfide, regulates pH to 6.8～7.2, enters methane-producing reactor again.Adopt this acidication and produce the technology that methane splits, make that the organic macromolecule acidication is the easy degradation material of small molecules in the former water of waste water, improved the biodegradability of waste water, the pH value that also can fully avoid the accumulation because of voltaile fatty acid to cause descends and redox potential rises to the restraining effect of anaerobion, and the while can prevent effectively that hydrogen sulfide is to the murder by poisoning of methanogen in same anaerobic reactor.Make every index of water outlet satisfy emission standard.
Industrial Wastewater Treatment of the present invention in application patent of the present invention, has also been applied for another patent of invention, and the patent of invention name is called " method of a kind of efficient processing yellow ginger processing waste water and uses thereof ".
The present invention has following advantage compared to existing technology:
1, the present invention utilizes physical sepn, bio-enzyme degradation method, reduces the resistance of the package action of Mierocrystalline cellulose and starch to the saponin extraction, reduces 85% of acid, water consumption, and then reduces quantity of wastewater effluent and intractability;
2, the acid hydrolysis slag that produced of the wet yellow ginger of the every 1000g of the present invention only has 52.5g, it is remarkable that each link is handled load reduction gradient, target extract-saponin progressively is enriched to 13.9% from 2.5%, and it is poor to have reduced the cost that supercritical extraction method and conventional organic solvents extract;
3, the present invention makes full use of the yellow ginger resource, under the prerequisite that guarantees major product diosgenin yield and quality, turns waste into wealth, and has utilized 66% yellow ginger starch, has reclaimed 75.3% yellow ginger Mierocrystalline cellulose;
4, the present invention produces waste residue and only accounts for 4.64% of raw material gross weight, has significantly reduced the processing costs that turmeric saponin extracts the back waste residue;
5, the present invention utilizes yellow ginger starch and sugared slag to produce biotic pesticide, not only realizes the high value comprehensive utilization of resource, and helps the pesticide residue problem that solves;
6, the present invention utilizes high-effective microorganism technical finesse trade effluent, yellow ginger effluent quality master control index CODcr≤100mg/L, and NH3-N≤5mg/L, the final outflow water pollutants removal rate reaches COD99%, NH
3-N99%; Running cost is lower than 5.0 yuan/m
3
Yellow ginger cleaner production integral process has not only been considered the comprehensive utilization of resource comprehensively, and produces waste water, waste residue seldom, really realizes cleaning of production technique.
Description of drawings
Fig. 1: process flow sheet of the present invention
Embodiment
Below in conjunction with processing parameter and working method, enumerate 3 embodiment the present invention is further specified, but the present invention is not only limited to these embodiment.
Detailed process of the invention process comprises: yellow ginger is carried out pre-treatment and isolates Mierocrystalline cellulose, with biological enzyme the yellow ginger starch slurry is converted into glucose then, with sugared slag through the fermentation acid hydrolysis after, extract saponin with overcritical equipment, waste hydrolyzed liquid with recyclable utilization prepares the bacillus thuringiensis microbial pesticide at last, and the waste liquid that can not recycle is handled qualified discharge by the high-effective microorganism of trade effluent.
Embodiment 1
Yellow ginger after the 1.2kg immersion is carried out pre-treatment, 74% of the plain total amount of recycled fiber, 75% of starch slurry total amount, transform through biological enzyme, 64% starch is converted into glucose product, inversion rate of glucose is 85%, and the yield of process for super-critical extracting saponin reaches 82% after the acid hydrolysis, and saponin purity is 94% after testing.
The utilized waste hydrolyzed liquid that produces in the process makes 62g bacillus thuringiensis microbial pesticide through pre-treatment, strain domestication, culture medium supplemented, seeding tank fermentation, ferment tank and fermented liquid post-processing step.
The technical process common property is given birth to waste water 500ml, and COD concentration is 46000mg/L, SO
4 2-Concentration is 24600mg/L, NH
4 +-N concentration is 900mg/L, and after the high-effective microorganism of trade effluent was handled, final outflow water COD concentration was 92.5mg/L, sulfide concentration 0.6mg/L, NH
4 +-N concentration is 1.7mg/L, and TN (total nitrogen) concentration is 2.5mg/L.
Embodiment 2
Yellow ginger after the 1.4kg immersion is carried out pre-treatment, 75% of the plain total amount of recycled fiber, 70% of starch slurry total amount, transform through biological enzyme, 66% starch slurry is converted into glucose product, inversion rate of glucose is 80%, and the yield of process for super-critical extracting saponin reaches 82% after the acid hydrolysis, and saponin purity is 95% after testing.
The utilized waste hydrolyzed liquid that produces in the process makes 71g bacillus thuringiensis microbial pesticide through pre-treatment, strain domestication, culture medium supplemented, seeding tank fermentation, ferment tank and fermented liquid post-processing step.
The technical process common property is given birth to waste water 578ml, and COD concentration is 45000mg/L, SO
4 2-Concentration is 24400mg/L, NH
4 +-N concentration is 890mg/L, and after the high-effective microorganism of trade effluent was handled, final outflow water COD concentration was 92mg/L, sulfide concentration 0.6mg/L, NH
4 +-N concentration is 1.6mg/L, and TN (total nitrogen) concentration is 2.4mg/L.
Embodiment 3
Yellow ginger after the 1.3kg immersion is carried out pre-treatment, 75% of the plain total amount of recycled fiber, 72% of starch slurry total amount, transform through biological enzyme, 67% starch slurry is converted into glucose product, inversion rate of glucose is 81%, and the yield of process for super-critical extracting saponin reaches 80% after the acid hydrolysis, and saponin purity is 95% after testing.
The utilized waste hydrolyzed liquid that produces in the process makes 64g bacillus thuringiensis microbial pesticide through pre-treatment, strain domestication, culture medium supplemented, seeding tank fermentation, ferment tank and fermented liquid post-processing step.
The technical process common property is given birth to waste water 550ml, and COD concentration is 46000mg/L, SO
4 2-Concentration is 24700mg/L, NH
4 +-N concentration is 900mg/L, and after the high-effective microorganism of trade effluent was handled, final outflow water COD concentration was 92.3mg/L, sulfide concentration 0.6mg/L, NH
4 +-N concentration is 1.8mg/L, and TN (total nitrogen) concentration is 2.5mg/L.
Claims (6)
1, be worked into the integral process of wastewater treatment from yellow ginger, it is characterized in that: this technology separation obtains Mierocrystalline cellulose, starch slurry, and further obtains saponin, glucose and bacillus thuringiensis microbial pesticide product;
Wherein, the technical process order is specific as follows:
Adopt the physical partition method pre-treatment, get Mierocrystalline cellulose and starch slurry;
Sugared slag after the starch slurry liquefaction saccharification after the fermentation acid hydrolysis, extracts saponin;
Liquid glucose after the starch slurry liquefaction saccharification, the treated glucose that is converted into;
The yellow ginger waste hydrolyzed liquid is prepared the bacillus thuringiensis microbial pesticide;
Meanwhile, carry out the processing of yellow ginger waste water.
2, according to the described integral process that is worked into wastewater treatment from yellow ginger of claim 1, it is characterized in that: physical method for separation is that the yellow ginger immersion was ground after 24 hours, with 60 mesh sieve wet screenings, the screening water is 1: 2.5 with the ratio of soaking back yellow ginger quality, screen overflow mainly is a Mierocrystalline cellulose, recycle dry back, and screen underflow is a starch slurry.
3, according to the described integral process that is worked into wastewater treatment from yellow ginger of claim 1, it is characterized in that: starch slurry liquefaction saccharification is the starch slurry that will obtain after the pre-treatment, boil dissolving, it is 6.3-6.7 that pH is regulated in cooling, the α-Dian Fenmei consumption of every g starch slurry is 20U, 68-72 ℃ of water-bath vibration 1h; Cooling once more, the pH of saccharification link is 3.8-4.2, the saccharifying enzyme consumption of every g starch is 300U, 60 ℃ of water-bath vibration 8h, mixture centrifugation, h saccharification.After saccharification finishes, with the mixture centrifugation, getting solids sugar slag above, is liquid glucose below;
Then, with sugared slag fermentation acid hydrolysis process, be in sugared slag, to add composite bacterium powder, bacterium powder consumption is every g sugar slag 0.02mg., fermentation is 48 hours in 33-37 ℃ of incubator; Regulate the pH value then to 0.4-0.6, place under 121～126 ℃ of conditions of high-pressure sterilizing pot and carry out acid hydrolysis 5h, regulate the pH value to neutrality, the centrifugal acid hydrolysis sugar slag that obtains, fermentation acid hydrolysis system is to hydrolysis residue, drying; Then, the acid hydrolysis slag is placed extraction kettle, extraction solvent is CO
2, extracting pressure 19-21MPa, extraction temperature 59-61 ℃ is entrainment agent with 95% ethanol, behind quiet extraction 1h, the moving extraction 4h, product and solvent C O in 50 ℃ of separating stills
2Separate, obtain saponin.
4, be worked into the integral process of wastewater treatment according to claim 1 is described from yellow ginger, it is characterized in that: the method for the treated transforming glucose of liquid glucose after the starch slurry liquefaction saccharification, liquid glucose is through decolouring, desalination, recrystallization, and drying is a glucose product.
5, be worked into the integral process of wastewater treatment according to claim 1 is described from yellow ginger, it is characterized in that: the yellow ginger waste hydrolyzed liquid prepares bacillus thuringiensis microbial pesticide sterilant, adopts deep liquid fermentation process to make.
6, according to the described integral process that is worked into wastewater treatment from yellow ginger of claim 1, it is characterized in that: yellow ginger waste water adopts " neutralization/precipitation-acidication-materialization desulfurization-methane fermentation-G-BAF " combination process, realization makes it standard discharge to the efficient removal of COD, ammonia nitrogen pollutant in the yellow ginger waste water.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030630A (en) * | 2010-11-16 | 2011-04-27 | 湖北丹江口丹澳医药化工有限公司 | Method for producing industrial grade sodium gluconate or calcium gluconate from yellow ginger starch |
| CN103450363A (en) * | 2013-08-12 | 2013-12-18 | 山东理工大学 | Method for combined extraction of ginger starch and cellulose |
-
2006
- 2006-01-06 CN CNB2006100001620A patent/CN100558650C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030630A (en) * | 2010-11-16 | 2011-04-27 | 湖北丹江口丹澳医药化工有限公司 | Method for producing industrial grade sodium gluconate or calcium gluconate from yellow ginger starch |
| CN103450363A (en) * | 2013-08-12 | 2013-12-18 | 山东理工大学 | Method for combined extraction of ginger starch and cellulose |
| CN103450363B (en) * | 2013-08-12 | 2016-01-27 | 山东理工大学 | A kind of combined extracting ginger starch, cellulosic method |
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| CN100558650C (en) | 2009-11-11 |
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