CN101810357B - Method and device for removing residual pesticides from fruit juice - Google Patents
Method and device for removing residual pesticides from fruit juice Download PDFInfo
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- CN101810357B CN101810357B CN2010101629366A CN201010162936A CN101810357B CN 101810357 B CN101810357 B CN 101810357B CN 2010101629366 A CN2010101629366 A CN 2010101629366A CN 201010162936 A CN201010162936 A CN 201010162936A CN 101810357 B CN101810357 B CN 101810357B
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- 235000015203 fruit juice Nutrition 0.000 title claims abstract description 144
- 239000000575 pesticide Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000001179 sorption measurement Methods 0.000 claims abstract description 107
- 229920005989 resin Polymers 0.000 claims description 119
- 239000011347 resin Substances 0.000 claims description 119
- 239000003795 chemical substances by application Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 27
- 230000001172 regenerating effect Effects 0.000 claims description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 238000010521 absorption reaction Methods 0.000 claims description 19
- 229920006395 saturated elastomer Polymers 0.000 claims description 10
- 230000003139 buffering effect Effects 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 9
- 238000004132 cross linking Methods 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000003463 adsorbent Substances 0.000 claims description 7
- CHRJZRDFSQHIFI-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;styrene Chemical compound C=CC1=CC=CC=C1.C=CC1=CC=CC=C1C=C CHRJZRDFSQHIFI-UHFFFAOYSA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229920006026 co-polymeric resin Polymers 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 238000005727 Friedel-Crafts reaction Methods 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 14
- 238000011084 recovery Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 239000003905 agrochemical Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229960001952 metrifonate Drugs 0.000 description 4
- NFACJZMKEDPNKN-UHFFFAOYSA-N trichlorfon Chemical compound COP(=O)(OC)C(O)C(Cl)(Cl)Cl NFACJZMKEDPNKN-UHFFFAOYSA-N 0.000 description 4
- TWFZGCMQGLPBSX-UHFFFAOYSA-N Carbendazim Natural products C1=CC=C2NC(NC(=O)OC)=NC2=C1 TWFZGCMQGLPBSX-UHFFFAOYSA-N 0.000 description 3
- 239000006013 carbendazim Substances 0.000 description 3
- JNPZQRQPIHJYNM-UHFFFAOYSA-N carbendazim Chemical compound C1=C[CH]C2=NC(NC(=O)OC)=NC2=C1 JNPZQRQPIHJYNM-UHFFFAOYSA-N 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 235000021393 food security Nutrition 0.000 description 2
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- VQXSOUPNOZTNAI-UHFFFAOYSA-N Pyrethrin I Natural products CC(=CC1CC1C(=O)OC2CC(=O)C(=C2C)CC=C/C=C)C VQXSOUPNOZTNAI-UHFFFAOYSA-N 0.000 description 1
- 241000220324 Pyrus Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- NNKVPIKMPCQWCG-UHFFFAOYSA-N methamidophos Chemical compound COP(N)(=O)SC NNKVPIKMPCQWCG-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 235000021017 pears Nutrition 0.000 description 1
- HYJYGLGUBUDSLJ-UHFFFAOYSA-N pyrethrin Natural products CCC(=O)OC1CC(=C)C2CC3OC3(C)C2C2OC(=O)C(=C)C12 HYJYGLGUBUDSLJ-UHFFFAOYSA-N 0.000 description 1
- VJFUPGQZSXIULQ-XIGJTORUSA-N pyrethrin II Chemical compound CC1(C)[C@H](/C=C(\C)C(=O)OC)[C@H]1C(=O)O[C@@H]1C(C)=C(C\C=C/C=C)C(=O)C1 VJFUPGQZSXIULQ-XIGJTORUSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a method and a device for removing residual pesticides from fruit juice. The method comprises the steps of preliminary adsorption treatment, buffer treatment, temperature reduction treatment, and secondary adsorption treatment, wherein the temperature reduction treatment is to reduce the temperature of the low-concentrate fruit juice to between 15 and 45 DEG C. The device comprises a preliminary adsorption column, a buffer tank, a heat exchanger and a small adsorption column which are connected through a pipeline, wherein the downstream of the preliminary adsorption column is connected with the buffer tank; the downstream of the buffer tank is connected with the heat exchanger; and the downstream of the heat exchanger is connected with the small adsorption column. The method and the device effectively and completely remove various residual pesticides from the fruit juice, and reduce the cost of processing the fruit juice.
Description
Technical field
The present invention relates to a kind of method and device of removing remains of pesticide in the fruit juice, specifically, relate to a kind of method and device of removing remains of pesticide in the fruit juice with resin.
Background technology
Along with food-safety problem emerges in an endless stream, food-safety problem is also paid close attention to more and more widely.Because a large amount of uses of agricultural chemicals in planting process, cause that the raw fruit that is used for fruit juice processing such as apple, pears etc. are all residual to have a harmful agricultural chemicals, like organophosphors such as acephatemet, metrifonate, organochlorine and pyrethrin pesticide.Therefore, in the fruit juice process, need to remove these residual agricultural chemicals,, bring and big hidden danger for the healthy of consumers in general if in the fruit juice process, can not remove remains of pesticide effectively.
Because the agricultural chemicals that the confusion of agricultural chemicals use, particularly some countries are prohibited in the continuation use, causes also happening occasionally as the remains of pesticide incident that exceeds standard of the inspissated juice of final products; And along with the raising of coherent detection standard, this type of incident will be more.As processing enterprise, owing to can't control, therefore can only set about from processing technology from the source, the innovation through technology prevents the harm of remains of pesticide to human body.
The juice processing technique key step comprises: the cleaning of raw fruit, choose fruit, squeezing, coarse filtration, pasteurize, enzymolysis, ultrafiltration, absorption, concentrate, pasteurize and can.For the removal of remains of pesticide in the fruit juice, mainly realize now through use adsorption step in above-mentioned technical process.
At present, adsorbing this step mainly is to carry out through the mode of macroporous absorbent resin absorption and charcoal absorption.
Charcoal absorption is through in fruit juice, adding a certain amount of active carbon, after stirring and placing a period of time, activated carbon filtration is fallen.Because active carbon non-selectivity suction-operated; Can better not adsorb most agricultural chemicals, therefore this process of active carbon that in fruit juice, adds can't reach the purpose of removing remains of pesticide in the fruit juice fully; And because the adding of active carbon; Can form certain damage to filter plant such as milipore filter, the active carbon of finishing using also is difficult to handle, and environment is polluted.
Macroporous resin adsorption is to adopt fixed-bed process, and through polymeric adsorbent, the remains of pesticide in the fruit juice can be by resin adsorption, to reach the purpose of removing remains of pesticide with fruit juice.
The whole process of macroporous resin adsorption technology comprises: replace (fruit juice replacing water), adsorb, replace (water displacement fruit juice) and regeneration several steps.
Remove remains of pesticide through macroporous absorbent resin,, obtained application more and more widely as a kind of important means.Polymeric adsorbent is to have highly cross-linked netted, porous, no ion-exchange group, molten insoluble organic polymer bulk material; Polymeric adsorbent has special selected property to organic matter, particularly organic non-electrolyte; It is to carry out through intermolecular force in adsorption process fully; No exchange interaction, chemistry and phase transformation reaction can not exert an influence to the physical and chemical index of fruit juice.
The resin adsorption effect receives the influence of factors such as material liquid pH, temperature, and according to the basic principle of absorption, under the situation that feed liquid character is confirmed, low temperature helps the carrying out of adsorption process.
In fruit juice processing, the temperature of fruit juice all remains between 48-53 ℃, and the main cause of keeping this temperature has three: 1. enzymatic activity is higher, helps the thorough of enzymolysis; 2. help the maintenance of ultrafiltration flux; 3. preceding crust kills back fruit juice does not need too much cooling, and the fruit juice temperature was higher before fruit juice advanced evaporimeter, energy savings consumption.Therefore resin adsorption also is under this temperature, to carry out as middle operation.
In the present resin absorption technique, adopt the pattern of fixed bed, the remains of pesticide in the fruit juice is adsorbed removal; Its whole process comprises as stated: replace (fruit juice replacing water), absorption, replace (water displacement fruit juice) and four processes of regeneration again, at first fruit juice advances resin, with the moisture content top wash clean in the resin column; After fruit juice comes out, collect evaporimeter and concentrate, after resin adsorption is saturated, stop into fruit juice; Need water that fruit juice in the resin column is cemented out; Do not have recovery value up to resin column outlet pol, stop, resin being regenerated with regenerative agent.
In the whole service process, have two replacement process, this moment resin column in except fruit juice is arranged; The existence of water, so its actual feed liquid operating mode in addition is different with fruit juice, owing to contacting of fruit juice and water; Can cause the fruit juice dilution; The remains of pesticide actual concentrations reduces, and material liquid pH raises, and this all is unfavorable for the absorption of resin to remains of pesticide.Particularly replacement process has for the second time adsorbed a large amount of remainss of pesticide on the resin, and the adsorption capacity of resin can reduce greatly; Resin and fruit juice have formed adsorption equilibrium, when water with resin column in fruit juice when displacement because medium changes; Not only cause in the fruit juice remains of pesticide can not be, but also may the remains of pesticide water that has adsorbed on the resin resolved, get into the evaporation and concentration operation and sneak in the finished product fruit juice by thorough absorption; Bring food security hidden danger; If but not to this part fruit juice displacement, then loss is huge again, brings the rising and the waste of cost.
Therefore, macroporous resin adsorption is because its alternative is adsorbed, and adsorption effect is better.But; Owing to get into the remains of pesticide of fruit juice in the fruit juice processing, all be water-soluble agricultural chemicals preferably, its at high temperature (the fruit juice temperature is generally at 48-52 degree centigrade) since molecular activity increase; Be more prone to soluble in water; And along with the rising of resin adsorption remains of pesticide amount, the adsorption equilibrium of all the other feed liquids is easy to broken, therefore very easily the displacement stage along with water gets into finished product fruit juice (this moment, water was equivalent to a kind of weak parsing agent); It is not thorough to cause remains of pesticide to be removed, and brings more serious food security hidden danger
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the defective of prior art, provide a kind of and remove that the method for remains of pesticide has device in the fruit juice, and it has been realized to all kinds of remainss of pesticide in the fruit juice effectively, remove completely, and has reduced the fruit juice cost of processing.
For addressing the above problem, the present invention adopts following technical scheme:
A kind of method of removing remains of pesticide in the fruit juice of the present invention, said method comprises the following steps:
1), preceding adsorption treatment: at first fruit juice is imported into resin column, the moisture content top wash clean with in the resin column after resin adsorption is saturated, stops into fruit juice, and water cements out fruit juice in the resin column again;
2), buffered: the fruit juice input buffering jar that preceding adsorption treatment is cemented out carries out buffered and obtains low concentration fruit juice;
3), cooling handles: with the processing of lowering the temperature of low concentration fruit juice, temperature is reduced to 15-45 ℃;
4), adsorption treatment again: will carry out resin column absorption through the low concentration fruit juice that cooling is handled, and remove remains of pesticide wherein.
A preferred version of the present invention is that the resin column in the said step of adsorption treatment again is than the little resin column of preceding adsorption treatment volume.
Further preferred, said resin is a macroporous absorbent resin.
Further preferred, said resin is the synthetic superhigh cross-linking degree styrene-divinylbenzene copolymer resins of suspension polymerisation, or the polymeric adsorbent that cross-linking reaction generates behind the Friedel-Crafts.
Another preferred version of the present invention is, preceding adsorption treatment and again in the adsorption treatment step, and the resin column after the adsorption treatment is regenerated to resin with regenerative agent.
Further preferred said cooling step is lowered the temperature for adopting heat exchanger.
Perhaps, said heat exchanger is panel radiator or tubular type hygiene-type heat exchanger.
The present invention's preferred version of handling of lowering the temperature is that said cooling treatment step temperature is reduced to 15-30 ℃.
Further preferred, said cooling treatment step temperature is reduced to 15-25 ℃.
Further preferred, said cooling treatment step temperature is reduced to 20 ℃.The low concentration fruit juice pol that obtains in the buffered step is the 2-10 Baume degrees; Before the resin column volume that uses of adsorption treatment be 6-9 cube, the resin column volume that uses of adsorption treatment is 1-2 cube again; Regenerative agent is that weight concentration is food-grade sodium hydroxide solution or the ethanol of 2-6%.
The present invention also provides a kind of device of removing remains of pesticide in the fruit juice, and it has realized all kinds of remainss of pesticide in the fruit juice are removed effectively, completely, and has reduced the fruit juice cost of processing.
The inventive system comprises the preceding adsorption column, surge tank, heat exchanger and the little adsorption column that connect through pipeline, said preceding adsorption column downstream connect surge tank, and said surge tank downstream connect heat exchanger, and said heat exchanger downstream connect little adsorption column.
On the said pipeline control valve is installed.
Said little adsorption column downstream connect evaporimeter.
Said heat exchanger is preferably panel radiator or tubular type hygiene-type heat exchanger.
Said little adsorption column is preferably little than preceding adsorption column volume.
The adsorption column volume is preferably 6-9 cube before said, and little adsorption column volume is preferably 1-2 cube.
The course of work of said device is:
1), preceding adsorption treatment: at first fruit juice is imported into preceding adsorption column; Preceding adsorption column is big resin column, with the moisture content top wash clean in the big resin column, after big resin adsorption is saturated; Stop into fruit juice; Water cements out fruit juice in the big resin column again, does not have recovery value up to big resin column outlet pol, stops into water; With regenerative agent resin is regenerated.
2), buffered: the fruit juice input buffering jar that preceding adsorption treatment is cemented out carries out buffered and obtains low concentration fruit juice;
3), cooling handles: with the processing of lowering the temperature of low concentration fruit juice, temperature is reduced to 15 ℃ with heat exchanger;
4), adsorption treatment again: will import into little adsorption column through the low concentration fruit juice that cooling is handled and carry out little resin column absorption, and remove remains of pesticide wherein.With regenerative agent resin is regenerated.
Under the principle that the present invention utilizes low temperature to help adsorbing,, pH value condition with higher lower, the fruit juice that displaces is cooled, make it be easy to absorption more, carry out adsorption treatment more then, reach the purpose of removing remains of pesticide fully at fruit juice concn.
The present invention has following advantage: on few basis of dropping into; Solved in the prior art problem that can not remove fully all kinds of remainss of pesticide in the fruit juice; The present invention has realized all kinds of remainss of pesticide in the fruit juice are removed effectively, completely, and has reduced the fruit juice cost of processing.Make consumers in general can safety drink.
Figure of description
Fig. 1 is apparatus of the present invention structural representation.
Among the figure: 1 is preceding adsorption column; 2 is surge tank; 3 is heat exchanger; 4 is little adsorption column; 5 is control valve; 6 is evaporimeter; 7 is pipeline.
The specific embodiment
As shown in Figure 1, apparatus of the present invention comprise preceding adsorption column 1, surge tank 2, heat exchanger 3 and the little adsorption column 4 that connects through pipeline 7, and said preceding adsorption column downstream connect surge tank, and said surge tank downstream connect heat exchanger, and said heat exchanger downstream connect little adsorption column.
Control valve 5 is installed on the said pipeline.
Said little adsorption column downstream connect evaporimeter 6.
The course of work of said device is:
1), preceding adsorption treatment: at first fruit juice is imported into preceding adsorption column; Preceding adsorption column is big resin column, with the moisture content top wash clean in the big resin column, after big resin adsorption is saturated; Stop into fruit juice; Water cements out fruit juice in the big resin column again, does not have recovery value up to big resin column outlet pol, stops into water; With regenerative agent resin is regenerated.
2), buffered: the fruit juice input buffering jar that preceding adsorption treatment is cemented out carries out buffered and obtains low concentration fruit juice;
3), cooling is handled: with heat exchanger with the processing of lowering the temperature of low concentration fruit juice;
4), adsorption treatment again: will import into little adsorption column through the low concentration fruit juice that cooling is handled and carry out little resin column absorption, and remove remains of pesticide wherein.With regenerative agent resin is regenerated.
Embodiment 1
1), preceding adsorption treatment: at first fruit juice is imported into big resin column, with the moisture content top wash clean in the big resin column, after big resin adsorption is saturated; Stop into fruit juice; Water cements out fruit juice in the big resin column again, does not have recovery value up to big resin column outlet pol, stops into water; The resin column volume that preceding adsorption treatment is used is 6 cubes, with regenerative agent resin is regenerated.Regenerative agent is that weight concentration is 2% food-grade sodium hydroxide solution.
2), buffered: the fruit juice input buffering jar that preceding adsorption treatment is cemented out carries out buffered and obtains low concentration fruit juice; The fruit juice pol is 10 Baume degrees.
3), cooling handles: with the processing of lowering the temperature of low concentration fruit juice, temperature is reduced to 20 ℃ with panel radiator;
4), adsorption treatment again: will carry out little resin column absorption through the low concentration fruit juice that cooling is handled, and remove remains of pesticide wherein.The resin column volume of adsorption treatment use is 2 cubes again; With regenerative agent resin is regenerated.Regenerative agent is that weight concentration is 2% food-grade sodium hydroxide solution.
Said resin is the synthetic superhigh cross-linking degree styrene-divinylbenzene copolymer resins of suspension polymerisation.
Embodiment 2
1), preceding adsorption treatment: at first fruit juice is imported into big resin column; The resin column volume that preceding adsorption treatment is used is 9 cubes, with the moisture content top wash clean in the big resin column, after big resin adsorption is saturated; Stop into fruit juice; Water cements out fruit juice in the big resin column again, does not have recovery value up to big resin column outlet pol, stops into water; With regenerative agent resin is regenerated.Regenerative agent is that weight concentration is 6% food-grade sodium hydroxide solution.
2), buffered: the fruit juice input buffering jar that preceding adsorption treatment is cemented out carries out buffered and obtains low concentration fruit juice; The fruit juice pol is 2 Baume degrees.
3), cooling handles: with the processing of lowering the temperature of low concentration fruit juice, temperature is reduced to 15 ℃ with panel radiator;
4), adsorption treatment again: will carry out little resin column absorption through the low concentration fruit juice that cooling is handled, and remove remains of pesticide wherein.The resin column volume of adsorption treatment use is 1 cube again; With regenerative agent resin is regenerated.Regenerative agent is that weight concentration is 6% food-grade sodium hydroxide solution.
Said resin is the synthetic superhigh cross-linking degree styrene-divinylbenzene copolymer resins of suspension polymerisation.
Embodiment 3
1), preceding adsorption treatment: at first fruit juice is imported into big resin column, with the moisture content top wash clean in the big resin column, after big resin adsorption is saturated; Stop into fruit juice; Water cements out fruit juice in the big resin column again, does not have recovery value up to big resin column outlet pol, stops into water; The resin column volume that preceding adsorption treatment is used is 7 cubes, with regenerative agent resin is regenerated.Regenerative agent is that weight concentration is 4% food-grade sodium hydroxide solution.
2), buffered: the fruit juice input buffering jar that preceding adsorption treatment is cemented out carries out buffered and obtains low concentration fruit juice; The fruit juice pol is 5 Baume degrees.
3), cooling handles: with the processing of lowering the temperature of low concentration fruit juice, temperature is reduced to 45 ℃ with tubular type hygiene-type heat exchanger;
4), adsorption treatment again: will carry out little resin column absorption through the low concentration fruit juice that cooling is handled, and remove remains of pesticide wherein.The resin column volume of adsorption treatment use is 1.5 cubes again; With regenerative agent resin is regenerated.Regenerative agent is that weight concentration is 4% food-grade sodium hydroxide solution.
Said resin is the polymeric adsorbent that cross-linking reaction generates behind the Friedel-Crafts.
Embodiment 4
1), preceding adsorption treatment: at first fruit juice is imported into big resin column, with the moisture content top wash clean in the big resin column, after big resin adsorption is saturated; Stop into fruit juice; Water cements out fruit juice in the big resin column again, does not have recovery value up to big resin column outlet pol, stops into water; The resin column volume that preceding adsorption treatment is used is 8 cubes, with regenerative agent resin is regenerated.Regenerative agent is an ethanol.
2), buffered: the fruit juice input buffering jar that preceding adsorption treatment is cemented out carries out buffered and obtains low concentration fruit juice; The fruit juice pol is 8 Baume degrees.
3), cooling handles: with the processing of lowering the temperature of low concentration fruit juice, temperature is reduced to 30 ℃ with tubular type hygiene-type heat exchanger;
4), adsorption treatment again: will carry out little resin column absorption through the low concentration fruit juice that cooling is handled, and remove remains of pesticide wherein.The resin column volume of adsorption treatment use is 2 cubes again; With regenerative agent resin is regenerated.Regenerative agent is an ethanol.
Said resin is the polymeric adsorbent that cross-linking reaction generates behind the Friedel-Crafts.
Embodiment 5
1), preceding adsorption treatment: at first fruit juice is imported into big resin column, with the moisture content top wash clean in the big resin column, after big resin adsorption is saturated; Stop into fruit juice; Water cements out fruit juice in the big resin column again, does not have recovery value up to big resin column outlet pol, stops into water; With regenerative agent resin is regenerated.
2), buffered: the fruit juice input buffering jar that preceding adsorption treatment is cemented out carries out buffered and obtains low concentration fruit juice;
3), cooling handles: with the processing of lowering the temperature of low concentration fruit juice, temperature is reduced to 25 ℃ with panel radiator;
4), adsorption treatment again: will carry out little resin column absorption through the low concentration fruit juice that cooling is handled, and remove remains of pesticide wherein.With regenerative agent resin is regenerated.
Said resin is the synthetic superhigh cross-linking degree styrene-divinylbenzene copolymer resins of suspension polymerisation.
Embodiment 6 test effects of the present invention
Table 1 is the test effect data that embodiment 1-5 mainly removes remains of pesticide carbendazim in the fruit juice, and before operation, the carbendazim of its finished product fruit juice is higher than 7ppb, and after the method for the invention was handled, carbendazim did not detect in fruit juice, and data are following:
Table 1
| The embodiment sequence number | Testing result mg/L |
| 1 | Do not detect |
| 2 | Do not detect |
| 3 | Do not detect |
| 4 | Do not detect |
| 5 | Do not detect |
Table 2 is the test effect data that embodiment 1-5 mainly removes remains of pesticide metrifonate in the fruit juice, and before operation, the metrifonate of its finished product fruit juice is higher than 23ppb, and after the method for the invention was handled, metrifonate did not detect in fruit juice, and data are following:
Table 2
| The embodiment sequence number | Testing result mg/L |
| 1 | Do not detect |
| 2 | Do not detect |
| 3 | Do not detect |
| 4 | Do not detect |
| 5 | Do not detect |
What should explain at last is: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has carried out detailed explanation to the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, all should be encompassed in the claim scope of the present invention.
Claims (12)
1. a method of removing remains of pesticide in the fruit juice is characterized in that said method comprises the following steps:
1), preceding adsorption treatment: at first fruit juice is imported into resin column, the moisture content top wash clean with in the resin column after resin adsorption is saturated, stops into fruit juice, and water cements out fruit juice in the resin column again;
2), buffered: the fruit juice input buffering jar that preceding adsorption treatment is cemented out carries out buffered and obtains low concentration fruit juice;
3), cooling handles: with the processing of lowering the temperature of low concentration fruit juice, temperature is reduced to 15-45 ℃;
4), adsorption treatment again: will carry out resin column absorption through the low concentration fruit juice that cooling is handled, and remove remains of pesticide wherein;
Wherein, the low concentration fruit juice pol that obtains in the said buffered step is the 2-10 Baume degrees; Resin column in the said step of adsorption treatment again is than the little resin column of preceding adsorption treatment volume; Said resin is a macroporous absorbent resin.
2. the method for remains of pesticide in the removal fruit juice as claimed in claim 1 is characterized in that: said resin is the synthetic superhigh cross-linking degree styrene-divinylbenzene copolymer resins of suspension polymerisation, or the polymeric adsorbent that cross-linking reaction generates behind the Friedel-Crafts.
3. the method for remains of pesticide in the removal fruit juice as claimed in claim 2; It is characterized in that: preceding adsorption treatment and again in the adsorption treatment step; Resin column after the adsorption treatment is regenerated to resin with regenerative agent, and regenerative agent is that weight concentration is food-grade sodium hydroxide solution or the ethanol of 2-6%.
4. the method for remains of pesticide in the removal fruit juice as claimed in claim 3 is characterized in that: said cooling step is lowered the temperature for adopting heat exchanger.
5. the method for remains of pesticide in the removal fruit juice as claimed in claim 4 is characterized in that: said heat exchanger is panel radiator or tubular type hygiene-type heat exchanger.
6. like the method for remains of pesticide in the arbitrary described removal fruit juice of claim 1-5, it is characterized in that: said cooling treatment step temperature is reduced to 15-30 ℃.
7. like the method for remains of pesticide in the arbitrary described removal fruit juice of claim 1-5, it is characterized in that: said cooling treatment step temperature is reduced to 15-25 ℃.
8. like the method for remains of pesticide in the arbitrary described removal fruit juice of claim 1-5, it is characterized in that: said cooling treatment step temperature is reduced to 20 ℃.
9. device of removing remains of pesticide in the fruit juice; It is characterized in that: said device comprises preceding adsorption column, surge tank, heat exchanger and the little adsorption column that connects through pipeline; The adsorption column downstream connect surge tank before said; Said surge tank downstream connect heat exchanger, and said heat exchanger downstream connect little adsorption column; Wherein, said little adsorption column is littler than preceding adsorption column volume.
10. the device of remains of pesticide in the removal fruit juice as claimed in claim 9 is characterized in that: on the said pipeline control valve is installed.
11. the device like remains of pesticide in claim 9 or the 10 described removal fruit juice is characterized in that: said little adsorption column downstream connect evaporimeter.
12. the device of remains of pesticide in the removal fruit juice as claimed in claim 11 is characterized in that: said heat exchanger is panel radiator or tubular type hygiene-type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101629366A CN101810357B (en) | 2010-05-05 | 2010-05-05 | Method and device for removing residual pesticides from fruit juice |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101629366A CN101810357B (en) | 2010-05-05 | 2010-05-05 | Method and device for removing residual pesticides from fruit juice |
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| Publication Number | Publication Date |
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| CN101810357A CN101810357A (en) | 2010-08-25 |
| CN101810357B true CN101810357B (en) | 2012-10-31 |
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| CN2010101629366A Active CN101810357B (en) | 2010-05-05 | 2010-05-05 | Method and device for removing residual pesticides from fruit juice |
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| CN102038266B (en) * | 2010-12-31 | 2013-11-20 | 西安蓝晓科技新材料股份有限公司 | Method and device for improving processing capacity of resin for fruit juice |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1919080A (en) * | 2005-08-27 | 2007-02-28 | 烟台北方安德利果汁股份有限公司 | Processing method for fruit juice with lowered methylamine phosphate content |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1919080A (en) * | 2005-08-27 | 2007-02-28 | 烟台北方安德利果汁股份有限公司 | Processing method for fruit juice with lowered methylamine phosphate content |
Non-Patent Citations (2)
| Title |
|---|
| 耿建暖等.果汁中农药残留和棒曲霉素及其去除方法的研究进展.《饮料工业》.2004,第7卷(第1期), * |
| 高振鹏等.苹果汁中溴氰菊酯残留的大孔树脂吸附分离.《农业机械学报》.2009,第40卷(第6期), * |
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