CN109851133A - A method of preventing starch hydrolyzate desalination processes microbial contamination - Google Patents
A method of preventing starch hydrolyzate desalination processes microbial contamination Download PDFInfo
- Publication number
- CN109851133A CN109851133A CN201910251702.XA CN201910251702A CN109851133A CN 109851133 A CN109851133 A CN 109851133A CN 201910251702 A CN201910251702 A CN 201910251702A CN 109851133 A CN109851133 A CN 109851133A
- Authority
- CN
- China
- Prior art keywords
- starch hydrolyzate
- desalination
- microbial contamination
- electrolemma
- liquid storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention provides a kind of method for preventing starch hydrolyzate desalination processes microbial contamination, the starch hydrolyzate desalination equipment therefor includes liquid storage unit, electrolemma desalination unit and its connecting line；The described method includes: the starch hydrolyzate after liquid storage unit, connecting line and the charging before charging in liquid storage unit is carried out steam sterilizing；Starch hydrolyzate after steam sterilizing is subjected to film filtering；Electrolemma desalination is carried out after the filtered starch hydrolyzate of film is carried out ultraviolet sterilization；The electrolemma desalination unit is subjected to cyclic chemical cleaning；Starch hydrolyzate after desalination is evaporated concentration, obtains starch sugar product.The present invention carries out degerming using the methods of steam, UF membrane, ultraviolet, chemical cleaning starch hydrolyzate or related device to different phase, makes full use of the synergistic effect between different sterilization technologies, effectively prevent microbial contamination；Meanwhile the method is easy to operate, has that wide adaptation range, stability be strong, low power consumption and other advantages.
Description
Technical field
The invention belongs to carbohydrate desalting technology field, it is related to a kind of starch hydrolyzate desalination processes microbial contamination that prevents
Method.
Background technique
With the fast development of glucose industry, the scale and production capacity of starch sugar enterprise constantly expand, and have become agricultural
One of industrialization and the important channel of further processing of grains.Currently, starch sugar desalinating process be using traditional male-female multistage from
Purified starch syrup is made through ion exchange resin desalination in sub- exchange method.Traditional starch sugar desalinating process not only needs
The a large amount of acid of consumption, alkali and water, while a large amount of high concentrated organic wastewaters are generated, it is unfavorable for the clean manufacturing of starch sugar industry.Phase
Than the traditional starch sugar ion exchange desalinating process, resin can be used for again to avoid a large amount of soda acids are consumed using electrodialysis desalination
It is raw, therefore can significantly reduce wastewater discharge.
It is a kind of new desalination process using the salinity in electroosmose process removing liquid glucose, has some research reports.
CN 202803120U discloses a kind of electrodialysis plant system for syrup desalination, and described device system includes pre-treatment dress
Set system, electrodialysis plant system and cleaning device system, the desalting refinement for syrup feed liquid.CN 102492782A is disclosed
It is a kind of using method electrodialysis removing syrup salinity and produce glucose syrup, its main feature is that will divide in proportion to desalination syrup
At two parts, the two sides of the amberplex of electrodialysis plant are respectively enterd, the ion under electric field action in the syrup of side turns
The other side is moved on to, which obtains desalination syrup, but does not handle the salt heavy syrup of the other side, causes the very big of sugar
Loss.CN105771663A discloses a kind of electrodialysis plant and method for starch sugar hydrolyzate desalination, its main feature is that logical
The filling ion-exchanger into light room is crossed to carry out enhancing ion migration and improve desalting efficiency.
However, being reported at present about the research of starch hydrolyzate electrodialysis desalination, electrodialytic technique is only focused on mostly and is used for
The effect of starch hydrolyzate desalination studies the feasibility of its practical application there is still a need for further.Due to starch hydrolyzate electrolemma
It is carried out at normal temperature in desalination processes, and is easy to cause electrolemma rich in organic matters such as sugar, organic acid and water-solubility proteins in feed liquid
Desalination system occurs microbial contamination and causes starch hydrolyzate putrid and deteriorated.Cause starch hydrolyzate desalination system microorganism dirty
The approach of dye is more, microorganism that the microorganism brought into such as starch hydrolyzate itself, film unit are bred in the process of running, liquid storage
Microorganism that the residual impurities such as slot and pipeline are brought into, contacted with air caused by microbial contamination etc., at present frequently with it is single
Method is difficult to effectively solve the problems, such as microbial contamination.The electrodialysis of starch sugar hydrolyzate desalination disclosed in CN 105771663A
In device and method, it is only provided with the cleaning unit cleaned to electrodialysis cell, microbial contamination may cause to other
Approach do not prevented.
In conclusion being badly in need of developing a kind of side that can effectively prevent microbial contamination in starch hydrolyzate desalination processes at present
Method, meanwhile, this method needs to meet the normal operation and product quality for not influencing starch hydrolyzate desalination processes.
Summary of the invention
In view of the problems of the existing technology, the purpose of the present invention is to provide one kind to prevent starch hydrolyzate desalination processes
The method of microbial contamination, the method carry out steam sterilizing, film point to starch hydrolyzate in starch hydrolyzate desalination processes
From, ultraviolet sterilization, steam sterilizing, chemical cleaning etc. are carried out to corresponding starch hydrolyzate desalter, utilize different process
Synergistic effect prevents microbial contamination from the overall process of starch hydrolyzate desalination, to improve the quality of desalination starch hydrolyzate, keeps away
It is putrid and deteriorated to exempt from its.
To achieve this purpose, the present invention adopts the following technical scheme:
The present invention provides a kind of method for preventing starch hydrolyzate desalination processes microbial contamination, the starch hydrolyzates
Desalination equipment therefor includes liquid storage unit, electrolemma desalination unit and its connecting line；
The method for preventing starch hydrolyzate desalination processes microbial contamination the following steps are included:
(1) starch hydrolyzate after liquid storage unit, connecting line and the charging before charging in liquid storage unit is steamed
Vapour sterilizing；
(2) starch hydrolyzate after step (1) steam sterilizing is subjected to film filtering；
(3) electrolemma desalination is carried out after the filtered starch hydrolyzate of step (2) film being carried out ultraviolet sterilization；
(4) the electrolemma desalination unit is subjected to cyclic chemical cleaning；
(5) starch hydrolyzate after desalination is evaporated concentration, obtains starch sugar product.
In the present invention, to prevent the microbial contamination in starch hydrolyzate desalination processes, filtered using steam, film, is ultraviolet,
The methods of chemical cleaning carries out degerming to the starch hydrolyzate or related device of different phase, makes full use of between different sterilization technologies
Synergistic effect, realize the removal of each stage microorganism after microbial contamination source, desalination processes, desalination, can effectively prevent
The only microbial contamination of starch hydrolyzate；Meanwhile the method does not influence the normal operation of starch hydrolyzate desalination processes, stablizes
Property is strong, and the desalination range suitable for separate sources liquid glucose is wide, and required low energy consumption.
It is used as currently preferred technical solution below, but not as the limitation of technical solution provided by the invention, passes through
Following technical scheme can preferably reach and realize technical purpose and beneficial effect of the invention.
As currently preferred technical solution, step (1) liquid storage unit and connecting line first use when vacant
High steam is purged, is sterilized.
In the present invention, every time before liquid storage unit charging, i.e. liquid storage unit and when vacant connecting line is first steamed using high pressure
Vapour is purged, remaining starch hydrolyzate or ejected wash water before the purpose of purging is to remove.
Preferably, the temperature range of the high steam is 110~135 DEG C, such as 110 DEG C, 115 DEG C, 120 DEG C, 125
DEG C, 130 DEG C or 135 DEG C etc., it is not limited to cited numerical value, other unlisted numerical value are equally suitable in the numberical range
With.
Preferably, the pressure limit of the high steam is 1.5~2.5kg/cm2, such as 1.5kg/cm2、1.6kg/cm2、
1.8kg/cm2、2.0kg/cm2、2.2kg/cm2、2.4kg/cm2Or 2.5kg/cm2Deng, it is not limited to cited numerical value,
Other unlisted numerical value are equally applicable in the numberical range.
Preferably, the time of the steam sterilizing is 5~50min, such as 5min, 10min, 20min, 30min, 40min
Or 50min etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
As currently preferred technical solution, the starch hydrolyzate after step (1) described charging in liquid storage unit is used
High steam sterilizes.
Preferably, the starch hydrolyzate steam sterilizing carries out in liquid storage unit.
In the present invention, the steam sterilizing of starch hydrolyzate carries out in pressure-resistant stainless steel reservoir, i.e., first to it is vacant when
Reservoir and after pipeline carries out steam sterilizing, then be passed through starch hydrolyzate and sterilize to hydrolyzate.
Preferably, the temperature range of the high steam is 110~135 DEG C, such as 110 DEG C, 115 DEG C, 120 DEG C, 125
DEG C, 130 DEG C or 135 DEG C etc., it is not limited to cited numerical value, other unlisted numerical value are equally suitable in the numberical range
With.
Preferably, the pressure limit of the high steam is 1.5~2.5kg/cm2, such as 1.5kg/cm2、1.6kg/cm2、
1.8kg/cm2、2.0kg/cm2、2.2kg/cm2、2.4kg/cm2Or 2.5kg/cm2Deng, it is not limited to cited numerical value,
Other unlisted numerical value are equally applicable in the numberical range.
Preferably, the time of the steam sterilizing is 5~50min, such as 5min, 10min, 20min, 30min, 40min
Or 50min etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
As currently preferred technical solution, the starch hydrolyzate after step (2) described steam sterilizing after cooling down again
Carry out film filtration sterilization.
Preferably, the starch hydrolyzate temperature is reduced to 10~40 DEG C, for example, 10 DEG C, 15 DEG C, 20 DEG C, 25 DEG C, 30 DEG C,
35 DEG C or 40 DEG C etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, the film filtering successively includes secondary filter and ultrafiltration.
As currently preferred technical solution, the dope obtained after the film filtering returns to liquid storage list after filtering again
Member.
In the present invention, film filtering is mainly used for the microorganism for killing starch hydrolyzate during steam sterilizing removing,
And the dope generated after film filtering removes thallus and suspended matter therein by the way of secondary filter again, then returns to reservoir
It reuses.
Preferably, the mode filtered again is bag type filtering.
As currently preferred technical solution, the starch hydrolyzate carries out ultraviolet sterilization after film filters.
Preferably, the ultraviolet sterilization carries out in ultraviolet sterilization device.
Preferably, the ultraviolet sterilization device is the external circulating device of electrolemma desalination unit.
Preferably, the starch hydrolyzate circulation enters back into electrolemma desalination unit after ultraviolet sterilization.
In the present invention, ultraviolet sterilization device is for further sterilizing to the starch hydrolyzate after steam sterilizing, Starch Hydrolysis
Liquid is introduced into ultraviolet sterilization device before entering electrolemma desalination unit, and ultraviolet sterilization device is the outer circulation of electrolemma desalination unit
Device, multiple ultraviolet sterilization devices pass through feed well, concentrated water slot and the pole water of pipeline and circulating pump and electrolemma desalination unit respectively
Slot connects and constitutes cycling element independent, and ultraviolet sterilization can carry out simultaneously with desalination processes.
As currently preferred technical solution, the liquid storage unit in device used in the starch hydrolyzate desalination is close
Unit is closed, the liquid storage unit top configures breather valve.
In the present invention, breather valve is configured on the top of reservoir, is not contacted with starch hydrolyzate, the purpose is to keep starch
The balance of hydrolyzate reservoir external and internal pressure.
As currently preferred technical solution, step (4) the electrolemma desalination unit includes electrodialysis plant.
Preferably, the electrolemma de-salting operation interval carries out periodically onlineization to electrodialysis plant using chemical agent
Learn cleaning.
In the present invention, starch hydrolyzate desalination processes interval is carried out, and is especially seeped to electrodialysis plant at regular intervals
Permeable membrane is cleaned, and organic matter, microorganism of enrichment etc. are removed, after avoiding fouling membrane and influencing desalting efficiency and desalination
The quality of starch hydrolyzate.
As currently preferred technical solution, the period of the in-site chemical cleaning is 8~for 24 hours, such as 8h, 12h,
16h, 20h or for 24 hours etc., it is not limited to cited numerical value, other unlisted numerical value are equally applicable in the numberical range.
Preferably, the time of the in-site chemical cleaning be 2~8h/ times, such as 2h/ times, 3h/ times, 4h/ times, 5h/ times,
6h/ times, 7h/ times or 8h/ inferior, it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are same
Sample is applicable in.
As currently preferred technical solution, the chemical agent includes acid, alkali and non oxidizing bactericide.
Preferably, the in-site chemical cleaning mode includes any one during pickling, alkali cleaning or fungicide are washed or at least two
The combination of kind, the combination is typical but non-limiting example has: the combination that the combination of pickling and alkali cleaning, alkali cleaning and fungicide are washed,
The combination etc. that pickling, alkali cleaning and fungicide are washed.
Preferably, the sequence of the in-site chemical cleaning is that pickling, alkali cleaning, fungicide are washed.
Preferably, increase the step of washing between any two in-site chemical cleaning modes and later.
In the present invention, to avoid the influence between cleaning agent used in different cleaning ways, in any two above-mentioned cleaning ways
Between increase washing, a kind of remaining cleaning agent is washed off, is finally once washed again.
As currently preferred technical solution, the starch hydrolyzate after step (5) described desalination enters evaporation element, into
Row obtains starch sugar product after being concentrated by evaporation.
Compared with prior art, the invention has the following advantages:
(1) the method for the invention is using steam, UF membrane, ultraviolet, chemical cleaning method to the starch of different phase
Hydrolyzate or related device carry out degerming and it is complete to effectively prevent starch hydrolyzate desalination by the synergistic effect between different process
Microbial contamination in the process improves the quality of desalination starch hydrolyzate；
(2) the method for the invention is easy to operate, suitable for the microorganism during the desalting processing of separate sources liquid glucose
Prevention and cure of pollution, have that wide adaptation range, stability be strong, low power consumption and other advantages.
Detailed description of the invention
Fig. 1 is the technique stream for preventing starch hydrolyzate desalination processes microbial contamination method that the embodiment of the present invention 1 provides
Cheng Tu；
Fig. 2 is the SEM figure of permeable membrane after starch hydrolyzate desalination system long-play in the embodiment of the present invention 1；
Fig. 3 is the SEM figure of permeable membrane after starch hydrolyzate desalination system long-play in comparative example 4 of the present invention.
Specific embodiment
In order to better illustrate the present invention, be easy to understand technical solution, below the present invention is described in more detail.But it is following
Embodiment be only simple example of the invention, represent or limit the scope of the present invention, the present invention protect model
It encloses and is subject to claims.
Specific embodiment of the invention part provides a kind of side for preventing starch hydrolyzate desalination processes microbial contamination
Method, the starch hydrolyzate desalination equipment therefor include liquid storage unit, electrolemma desalination unit and its connecting line；
The method for preventing starch hydrolyzate desalination processes microbial contamination the following steps are included:
(1) starch hydrolyzate after liquid storage unit, connecting line and the charging before charging in liquid storage unit is steamed
Vapour sterilizing；
(2) starch hydrolyzate after step (1) steam sterilizing is subjected to film filtering；
(3) electrolemma desalination is carried out after the filtered starch hydrolyzate of step (2) film being carried out ultraviolet sterilization；
(4) the electrolemma desalination unit is subjected to cyclic chemical cleaning；
(5) starch hydrolyzate after desalination is evaporated concentration, obtains starch sugar product.
The following are typical but non-limiting embodiments of the invention:
Embodiment 1:
Present embodiments provide a kind of method for preventing starch hydrolyzate desalination processes microbial contamination, the work of the method
Skill flow chart is as shown in Figure 1, comprising the following steps:
(1) vacant reservoir and connecting line are purged, sterilized using high steam, the temperature of the high steam
Degree is 120 DEG C, pressure 2.0kg/cm2, the processing time is 15min；
(2) starch hydrolyzate to be processed is added in reservoir, is sterilized using high steam, the high steam
Temperature be 120 DEG C, pressure 2.0kg/cm2, the processing time is 25min；Wherein the reservoir top configures breather valve, with
Maintain reservoir internal and external pressure balance；
(3) starch hydrolyzate after high pressure steam sterilization after cooling down successively is subjected to secondary filter, ultrafiltration, filtering gained
Dope returns to reservoir after secondary filter again；
(4) by step (3), treated that starch hydrolyzate sterilizes in ultraviolet sterilization device, and ultraviolet sterilization device is as electricity
The external circulating device of film desalination unit, multiple ultraviolet sterilization devices pass through respectively pipeline and circulating pump and electrolemma desalination unit into
Hopper, concentrated water slot connect with pole sink and constitute cycling element independent；
(5) electrolemma de-salting operation interval carries out in-site chemical cleaning, the chemistry to electrodialysis plant using chemical agent
Medicament includes acid, alkali and non oxidizing bactericide, successively carry out washing-pickling-washing-alkali cleaning-washing-fungicide is washed-washes；
(6) starch hydrolyzate after desalination enters evaporation element, obtains starch sugar product after being evaporated concentration.
Embodiment 2:
A kind of method for preventing starch hydrolyzate desalination processes microbial contamination is present embodiments provided, the method includes
Following steps:
(1) vacant reservoir and connecting line are purged, sterilized using high steam, the temperature of the high steam
Degree is 110 DEG C, pressure 1.5kg/cm2, the processing time is 40min；
(2) starch hydrolyzate to be processed is added in reservoir, is sterilized using high steam, the high steam
Temperature be 130 DEG C, pressure 2.5kg/cm2, the processing time is 10min；Wherein the reservoir top configures breather valve, with
Maintain reservoir internal and external pressure balance；
(3) starch hydrolyzate after high pressure steam sterilization after cooling down successively is subjected to secondary filter, ultrafiltration, filtering gained
Dope returns to reservoir after secondary filter again；
(4) by step (3), treated that starch hydrolyzate sterilizes in ultraviolet sterilization device, and ultraviolet sterilization device is as electricity
The external circulating device of film desalination unit, multiple ultraviolet sterilization devices pass through respectively pipeline and circulating pump and electrolemma desalination unit into
Hopper, concentrated water slot connect with pole sink and constitute cycling element independent；
(5) electrolemma de-salting operation interval carries out in-site chemical cleaning, the chemistry to electrodialysis plant using chemical agent
Medicament includes acid and non oxidizing bactericide, successively carry out washing-pickling-washing-fungicide is washed-washes；
(6) starch hydrolyzate after desalination enters evaporation element, obtains starch sugar product after being evaporated concentration.
Embodiment 3:
A kind of method for preventing starch hydrolyzate desalination processes microbial contamination is present embodiments provided, the method includes
Following steps:
(1) vacant reservoir and connecting line are purged, sterilized using high steam, the temperature of the high steam
Degree is 130 DEG C, pressure 2.5kg/cm2, the processing time is 5min；
(2) starch hydrolyzate to be processed is added in reservoir, is sterilized using high steam, the high steam
Temperature be 110 DEG C, pressure 1.5kg/cm2, the processing time is 50min；Wherein the reservoir top configures breather valve, with
Maintain reservoir internal and external pressure balance；
(3) starch hydrolyzate after high pressure steam sterilization after cooling down successively is subjected to secondary filter, ultrafiltration, filtering gained
Dope returns to reservoir after secondary filter again；
(4) by step (3), treated that starch hydrolyzate sterilizes in ultraviolet sterilization device, and ultraviolet sterilization device is as electricity
The external circulating device of film desalination unit, multiple ultraviolet sterilization devices pass through respectively pipeline and circulating pump and electrolemma desalination unit into
Hopper, concentrated water slot connect with pole sink and constitute cycling element independent；
(5) electrolemma de-salting operation interval carries out in-site chemical cleaning, the chemistry to electrodialysis plant using chemical agent
Medicament includes bronsted lowry acids and bases bronsted lowry, successively carries out washing-pickling-washing-alkali cleaning-washing；
(6) starch hydrolyzate after desalination enters evaporation element, obtains starch sugar product after being evaporated concentration.
Embodiment 4:
Present embodiments provide a kind of method for preventing starch hydrolyzate desalination processes microbial contamination, the method reference
Method in embodiment 1, difference are only that: not set breather valve on the reservoir.
In 1-3 of the embodiment of the present invention, prevent occurring microorganism dirt in starch hydrolyzate desalination processes using the above method
Phenomenon is contaminated, after starch hydrolyzate desalination system long-play 12-24h, observes the surface of cavity block, anode membrane in electrodialysis plant,
Electron microscope (SEM) observation is scanned to permeable membrane, the result of embodiment 1 as shown in Fig. 2, it can be found that film surface not
Mycelium is occurred, microbial contamination is not present, does not also find that putrid and deteriorated phenomenon occurs in starch hydrolyzate；
It is not used breather valve in embodiment 4, fluid reservoir fails sufficiently closed, and the presence of starch hydrolyzate and air contacts, but
The contact area of the two is smaller, it is possible to create a small amount of microorganism easily got rid of in other sterilization treatments, to whole desalination
Journey influences smaller.
Comparative example 1:
This comparative example provides a kind of method for preventing starch hydrolyzate desalination processes microbial contamination, the method reference
Method in embodiment 1, difference are only that: not including step (1) and step (2).
Comparative example 2:
This comparative example provides a kind of method for preventing starch hydrolyzate desalination processes microbial contamination, the method reference
Method in embodiment 1, difference are only that: not including step (3).
Comparative example 3:
This comparative example provides a kind of method for preventing starch hydrolyzate desalination processes microbial contamination, the method reference
Method in embodiment 1, difference are only that: not including step (4).
Comparative example 4:
This comparative example provides a kind of method for preventing starch hydrolyzate desalination processes microbial contamination, the method reference
Method in embodiment 1, difference are only that: not including step (5).
In above-mentioned comparative example 1-4, when lacking any one degerming technological operation in starch hydrolyzate desalination processes, at this
The microorganism that stage breeds can not remove, hence into entire desalination system, after long-play 12-24h, to electrodialysis plant
Permeable membrane be scanned electron microscope (SEM) observation, in comparative example 4 permeable membrane SEM figure as shown in figure 3, it can be found that
There is mycelium in infiltration film surface, and microbial contamination is serious, in turn results in starch hydrolyzate and occurs changing colour and putrid and deteriorated.
The present invention be can be seen that with comparative example based on the above embodiments using steam, UF membrane, ultraviolet, chemical cleaning etc.
Method carries out degerming to the starch hydrolyzate or related device of different phase, and the collaboration between different sterilization technologies is made full use of to make
With, the removal of each stage microorganism of desalination starch hydrolyzate is realized, the microbial contamination of starch hydrolyzate is effectively prevent, raising
The quality of desalination starch hydrolyzate；Meanwhile the method is easy to operate, during the desalting processing suitable for separate sources liquid glucose
Microbial contamination prevention and treatment, have that wide adaptation range, stability be strong, low power consumption and other advantages.
The Applicant declares that the present invention is explained by the above embodiments method detailed of the invention, but the present invention not office
Be limited to above-mentioned method detailed, that is, do not mean that the invention must rely on the above detailed methods to implement.Technical field
Technical staff it will be clearly understood that any improvement in the present invention, equivalence replacement and auxiliary operation to each step of the method for the present invention
Addition, selection of concrete mode etc., all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of method for preventing starch hydrolyzate desalination processes microbial contamination, which is characterized in that the starch hydrolyzate is de-
Salt equipment therefor includes liquid storage unit, electrolemma desalination unit and its connecting line；
The method for preventing starch hydrolyzate desalination processes microbial contamination the following steps are included:
(1) starch hydrolyzate after liquid storage unit, connecting line and the charging before charging in liquid storage unit steam is carried out to go out
Bacterium；
(2) starch hydrolyzate after step (1) steam sterilizing is subjected to film filtering；
(3) electrolemma desalination is carried out after the filtered starch hydrolyzate of step (2) film being carried out ultraviolet sterilization；
(4) the electrolemma desalination unit is subjected to cyclic chemical cleaning；
(5) starch hydrolyzate after desalination is evaporated concentration, obtains starch sugar product.
2. the method according to claim 1 for preventing starch hydrolyzate desalination processes microbial contamination, which is characterized in that step
Suddenly (1) described liquid storage unit and connecting line first use high steam to be purged, sterilized when vacant；
Preferably, the temperature range of the high steam is 110~135 DEG C；
Preferably, the pressure limit of the high steam is 1.5~2.5kg/cm2；
Preferably, the time of the steam sterilizing is 5~50min.
3. the method according to claim 1 or 2 for preventing starch hydrolyzate desalination processes microbial contamination, feature exist
In being sterilized before step (1) described starch hydrolyzate enters electrolemma desalination unit using high steam；
Preferably, the starch hydrolyzate steam sterilizing carries out in liquid storage unit；
Preferably, the temperature range of the high steam is 110~135 DEG C；
Preferably, the pressure limit of the high steam is 1.5~2.5kg/cm2；
Preferably, the time of the steam sterilizing is 5~50min.
4. the method according to claim 1-3 for preventing starch hydrolyzate desalination processes microbial contamination, special
Sign is that the starch hydrolyzate after step (2) described steam sterilizing carries out film filtering again after cooling down；
Preferably, the starch hydrolyzate temperature is reduced to 10~40 DEG C；
Preferably, the film filtering successively includes secondary filter and ultrafiltration.
5. the method according to claim 4 for preventing starch hydrolyzate desalination processes microbial contamination, which is characterized in that institute
It states the dope obtained after film filtering and returns to liquid storage unit after secondary filter again；
Preferably, the mode of the secondary filter again is bag type filtering.
6. the method according to claim 1-5 for preventing starch hydrolyzate desalination processes microbial contamination, special
Sign is that the starch hydrolyzate carries out ultraviolet sterilization after film filters；
Preferably, the ultraviolet sterilization carries out in ultraviolet sterilization device；
Preferably, the ultraviolet sterilization device is the external circulating device of electrolemma desalination unit；
Preferably, the starch hydrolyzate circulation enters back into electrolemma desalination unit after ultraviolet sterilization.
7. the method according to claim 1-6 for preventing starch hydrolyzate desalination processes microbial contamination, special
Sign is that the liquid storage unit in the starch hydrolyzate desalination equipment therefor is closed cells, the liquid storage unit top configuration
Breather valve.
8. the method according to claim 1-7 for preventing starch hydrolyzate desalination processes microbial contamination, special
Sign is that step (4) the electrolemma desalination unit includes electrodialysis plant；
Preferably, it is clear to carry out periodically online chemistry to electrodialysis plant using chemical agent for the electrolemma de-salting operation interval
It washes；
Preferably, the period of the in-site chemical cleaning be 8~for 24 hours；
Preferably, the time of the in-site chemical cleaning is 2~8h/ times.
9. the method according to claim 8 for preventing starch hydrolyzate desalination processes microbial contamination, which is characterized in that institute
Stating chemical agent includes acid, alkali and non oxidizing bactericide；
Preferably, the in-site chemical cleaning mode includes any one during pickling, alkali cleaning or fungicide are washed or at least two
Combination；
Preferably, the sequence of the in-site chemical cleaning is that pickling, alkali cleaning, fungicide are washed；
Preferably, increase the step of washing between any two in-site chemical cleaning modes and later.
10. -9 described in any item methods for preventing starch hydrolyzate desalination processes microbial contamination according to claim 1, special
Sign is that the starch hydrolyzate after step (5) described desalination enters evaporation element, obtains starch sugar production after being evaporated concentration
Product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251702.XA CN109851133A (en) | 2019-03-29 | 2019-03-29 | A method of preventing starch hydrolyzate desalination processes microbial contamination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251702.XA CN109851133A (en) | 2019-03-29 | 2019-03-29 | A method of preventing starch hydrolyzate desalination processes microbial contamination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109851133A true CN109851133A (en) | 2019-06-07 |
Family
ID=66902597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910251702.XA Pending CN109851133A (en) | 2019-03-29 | 2019-03-29 | A method of preventing starch hydrolyzate desalination processes microbial contamination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109851133A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113617227A (en) * | 2021-08-24 | 2021-11-09 | 郑州中科新兴产业技术研究院 | Intelligent pollution prevention and control method used in starch sugar desalting process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56118702A (en) * | 1980-02-25 | 1981-09-17 | Mitsubishi Petrochem Co Ltd | Treatment of ion exchange membrane |
| CN1364763A (en) * | 2001-01-19 | 2002-08-21 | 北京中联捷思科技发展有限公司 | Method for extracting soy bean oligosaccharide from soy bean whey water |
| CN105771663A (en) * | 2015-12-30 | 2016-07-20 | 中国科学院过程工程研究所 | Electrodialysis device and method for desalination of starch sugar hydrolysate |
-
2019
- 2019-03-29 CN CN201910251702.XA patent/CN109851133A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56118702A (en) * | 1980-02-25 | 1981-09-17 | Mitsubishi Petrochem Co Ltd | Treatment of ion exchange membrane |
| CN1364763A (en) * | 2001-01-19 | 2002-08-21 | 北京中联捷思科技发展有限公司 | Method for extracting soy bean oligosaccharide from soy bean whey water |
| CN105771663A (en) * | 2015-12-30 | 2016-07-20 | 中国科学院过程工程研究所 | Electrodialysis device and method for desalination of starch sugar hydrolysate |
Non-Patent Citations (2)
| Title |
|---|
| 张娟: "《能源科学知识》", 31 October 2008, 大众文艺出版社 * |
| 王晓利: "《生物化学技术》", 30 September 2014, 中国轻工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113617227A (en) * | 2021-08-24 | 2021-11-09 | 郑州中科新兴产业技术研究院 | Intelligent pollution prevention and control method used in starch sugar desalting process |
| CN113617227B (en) * | 2021-08-24 | 2024-02-13 | 郑州中科新兴产业技术研究院 | Intelligent pollution prevention and control method for starch sugar desalination process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105771663B (en) | A kind of electrodialysis plant and method for starch sugar hydrolyzate desalination | |
| CN106186458B (en) | A kind of Zero discharge treatment method and dedicated processes system for reverse osmosis concentrated water difficult to degrade | |
| KR101589763B1 (en) | Method for cleaning Filtering Membrane | |
| CN203741163U (en) | Bottle washing water cyclic purification device | |
| CN109224869A (en) | A kind of cleaning method of NF film, RO film | |
| CN108187501A (en) | A kind of cleaning method of reverse osmosis membrane system organic pollution | |
| CN206692490U (en) | A kind of ultrapure water system | |
| CN109851133A (en) | A method of preventing starch hydrolyzate desalination processes microbial contamination | |
| CN111072193A (en) | Ultrafiltration mineral water production system | |
| CN105152497A (en) | Circulation direct drinking water deep purification system using ozone biological activated carbon | |
| CN205170610U (en) | Circulation of adopting ozone biological activity charcoal deep purification system of directly drinking water | |
| JP2001029752A (en) | Manufacture of high-purity water and device therefor | |
| CN107096388B (en) | A kind of forward osmosis membrane cleaning method | |
| CN202829785U (en) | Treatment system for nanofiltration and reverse-osmosis concentrated solution | |
| JP2001170630A (en) | Pure water production device | |
| WO2003042110A1 (en) | Method of reusing food factory process water | |
| CN202080970U (en) | Reverse osmosis treatment system with high recovery rate | |
| CN215327474U (en) | Reverse osmosis filter device | |
| CN109289538A (en) | A kind of method of in-site chemical cleaning reverse osmosis membrane | |
| CN210796018U (en) | Phosphorus-containing cleaning wastewater treatment system for electrode foil | |
| CN106830451A (en) | The deionization integral treatment method and device of a kind of desalination water | |
| CN111321530A (en) | Cleaning method and cleaning system for medical dust-free cloth | |
| CN208898642U (en) | A kind of water-treatment system device | |
| JPS63141694A (en) | Production of ultra-pure water | |
| CN218491594U (en) | Biochemical sewage recycling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190607 |
|
| RJ01 | Rejection of invention patent application after publication |