CN102942236B - Method for treating and reusing waste fluid from citric acid chromatography extraction - Google Patents
Method for treating and reusing waste fluid from citric acid chromatography extraction Download PDFInfo
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- CN102942236B CN102942236B CN2012103817496A CN201210381749A CN102942236B CN 102942236 B CN102942236 B CN 102942236B CN 2012103817496 A CN2012103817496 A CN 2012103817496A CN 201210381749 A CN201210381749 A CN 201210381749A CN 102942236 B CN102942236 B CN 102942236B
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Abstract
The invention discloses a method for treating and reusing waste fluid from citric acid chromatography extraction. The treatment method is as follows: a composite adsorbent comprising attapulgite, acid modified attapulgite, zeolite powder, bentonite, sodium ion modified zeolite powder and organically modified zeolite powder is used as an adsorption medium to conduct adsorption treatment on the waste fluid; and a first adsorption and a second adsorption are included. The reuse method is as follows: a second adsorption clear liquid from the second adsorption is directly used in a raw material pulping process in a citric acid fermentation production method, and is processed into a raw material slurry; and addition amount of the second adsorption clear liquid is subject to that the concentration of the raw material in the raw material slurry for citric acid fermentation production reaches 200-320 g / L. The invention provides an efficient, low-cost and recyclable method for treating and reusing waste fluid from citric acid chromatography extraction, and accomplishes the purposes of preventing pollution and increasing economic efficiency.
Description
Technical field
The invention belongs to Industrial Wastewater Treatment recovery technology field, be specifically related to processing and the recycling method of citric acid chromatogram waste liquid that extraction method produces.
Background technology
Traditional method for extracting citric acid is mainly calcium salt precipitation method, adopts this extraction process to produce citric acid and can produce a large amount of trade effluents and waste residue, the havoc ecotope.In recent years, the cleaner production that occurs in long-term industrial pollution control process, turned out to be environmental friendliness by the practice of many countries in the world and be conducive to the effective means of Sustainable development.
Citric acid chromatogram extraction method is as a kind of clean production method, low with its sulfuric acid consumption, produce waste gas few, do not produce the advantage such as calcium sulfate waste residues, more and more be subject to the favor of citric acid manufacturing.Yet, can produce a large amount of waste liquids in the production process of chromatography extraction citric acid, contain citric acid, protein, glucose and other carbohydrate, fat, ammonia nitrogen, organic acid, fermentation thalline Secretases, fermentation residue etc. in waste liquid, its organic concentration is high, complicated component, acid strong, intractability is large.
At present, domestic citric acid chromatogram extraction method waste liquid mainly carries out traditional decontaminated water to be processed, and comprises biological treatment, as anaerobic biological process, activated sludge process, biomembrance process etc.Although the method treatment effect is better, investment is large, and cost is high, and final treatment solution can not reclaim and cycling and reutilization; In addition, the treatment process of reported citric acid chromatogram extraction method waste liquid also has Photosynthetic Bacteria, emulsion liquid membrane etc., but all can't large-scale promotion application because processing efficiency is low, cost is high, operating procedure is loaded down with trivial details.
Therefore, develop the treatment process of a kind of high-level efficiency, low cost, citric acid chromatogram extraction method waste liquid capable of circulation,, to reaching dual purpose pre-anti-pollution and that increase economic efficiency, have very important meaning.
Summary of the invention
Above-mentioned defect for the treatment process existence that has citric acid chromatogram extraction method waste liquid now, the applicant is through Improvement, processing and the recycling method of a kind of high-level efficiency, low cost, citric acid industry chromatogram waste liquid capable of circulation are provided, have reached the pre-anti-pollution and dual purpose of increasing economic efficiency.
Technical scheme of the present invention is as follows:
A kind for the treatment of process of citric acid chromatogram extraction method waste liquid comprises the following steps:
(1) one-level absorption: the compound adsorbent that adds, zeolite powder attapulgite modified by attapulgite, acid, wilkinite, sodium ion modified zeolite powder and organic modified zeolite powder to form in described waste liquid, in 60～65 ℃ of whip attachment 0.5～2.5h, mixing speed is 50～180rpm, last standing sedimentation 0.5～10h, sedimentation is complete, the supernatant liquor that obtains is one-level absorption clear liquid, wherein:
The mass concentration of attapulgite is 30～100g/L,
The attapulgite modified mass concentration of acid is 10～50g/L,
The mass concentration of zeolite powder is 30～100g/L,
Bentonitic mass concentration is 10～50g/L,
The mass concentration of sodium ion modified zeolite powder is 5～20g/L,
The mass concentration of organic modified zeolite powder is 5～20g/L;
(2) secondary absorption: again add above-mentioned compound adsorbent in step (1) gained one-level absorption clear liquid, again carry out whip attachment and sedimentation processing according to the described method of step (1), the supernatant liquor that obtains is the secondary absorption clear liquid, is the final treatment solution of described waste liquid.
Its further technical scheme is:
The described compound adsorbent recycling of step (1) and step (2) 2～5 times.
The present invention also provides a kind of recycling method of citric acid chromatogram extraction method waste liquid, gained secondary absorption clear liquid is directly used in raw slurry modulating process in the fermentative Production citric acid, its raw material with the fermentative Production citric acid is mixed and stirs, make raw slurry.
Its further technical scheme is:
The raw material of described fermentative Production citric acid is selected from a kind of in Semen Maydis powder, Tapioca Starch, wheat starch, sweet potato powder.
The add-on of described secondary absorption clear liquid reaches 200～320 g/L with the mass concentration of raw material in described raw slurry of described fermentative Production citric acid and is as the criterion.
The present invention has following useful technique effect:
The present invention is directed to the waste liquid that citric acid chromatogram extraction method produces, with attapulgite, attapulgite modified, the zeolite powder of acid, wilkinite, sodium ion modified zeolite powder and organic modified zeolite powder by a certain percentage proportioning make compound adsorbent, and as adsorption medium, directly feed intake and carry out adsorption treatment in above-mentioned waste liquid; Attapulgite, zeolite powder, wilkinite are the silicate non-metallic mineralss of a class frame columnar structure, its basic structure is to be connected the special pore canal system that forms by oxo bridge by many silicon-oxy tetrahedrons, has superior adsorption bleaching ability, wherein, attapulgite and the attapulgite modified main Adsorption organic acid of acid, zeolite powder, sodium ion modification and organic modified zeolite powder and wilkinite mainly adsorb ammonia nitrogen and protein, and the three all has certain adsorption to carbohydrate.On the one hand, the above-mentioned sorbent material of compound use, can effectively remove sugar in above-mentioned waste liquid, organic acid, ammonia nitrogen etc., after testing, treatment process of the present invention can reach respectively 95%, 28%, 42% to the clearance of organic acid, total reducing sugar, total nitrogen, with process before compare, the absorption clear liquid transmittance after processing significantly increases, acidity descends, and the method operating procedure is simple, investment is little, efficiency is high, sorbent material can reuse, and is conducive to save energy, reduces cost of water treatment; On the other hand, also contain appropriate total reducing sugar and total nitrogen in the absorption clear liquid that the inventive method is processed, can be used as the Carbon and nitrogen sources that mould in Citric Acid Fermentation (as black-koji mould) mycelial growth is used, thereby be applied to raw material in the fermentative Production citric acid industry operation of sizing mixing, the recovery and reuse of citric acid industry chromatogram waste liquid have been realized, save water resources, greatly reduced production cost.In sum, the invention provides a kind of processing and the recycling method of high-level efficiency, low cost, citric acid chromatogram extraction method waste liquid capable of circulation, reached the pre-anti-pollution and dual purpose of increasing economic efficiency.
Description of drawings
Fig. 1 is the schematic diagram of the treatment facility of waste liquid described in the present invention.
Fig. 2 is the processing schematic diagram that the chromatogram extraction method is produced chromatogram waste liquid in the process of citric acid and prior art.
Fig. 3 is that the chromatogram extraction method is produced the process of citric acid and processing and the recycling schematic diagram of chromatogram waste liquid of the present invention.
Embodiment
Below in conjunction with accompanying drawing, and by embodiment, the present invention is specifically described.
As shown in Figure 1, from the pending chromatogram waste liquid in citric acid production workshop, enter waste liquid dashpot 1,
After short stay therein and buffering, pass in the one-level adsorption tank 2 that agitator 7 is housed, under the condition that constantly stirs with add one-level adsorption tank 2 in compound adsorbent carry out absorption reaction; Absorption finishes, and the suspension of the chromatogram waste liquid of process absorption reaction in one-level adsorption tank 2 and compound adsorbent is passed in first grade subsides groove 3 and carries out standing sedimentation; Sedimentation finishes, the absorption of the one-level in first grade subsides groove 3 clear liquid is passed in the secondary absorption groove 4 that agitator 7 is housed, under the condition that constantly stirs with add secondary absorption groove 4 in compound adsorbent carry out absorption reaction; Absorption finishes, and the suspension of the one-level absorption clear liquid of process absorption reaction in secondary absorption groove 4 and compound adsorbent is passed in secondary subsider 5 and carries out standing sedimentation; Sedimentation finishes, and the secondary absorption clear liquid in secondary subsider 5 is passed in absorption clear liquid groove 6 and preserves, and obtains the final treatment solution of described waste liquid.Gained secondary absorption clear liquid is directly used in raw slurry modulating process in the fermentative Production citric acid, simultaneously, the secondary absorption agent mud of sedimentation in secondary subsider 5 is passed in one-level adsorption tank 2 and recycles.In above-mentioned waste liquor treatment equipment, the mobile of liquid is to realize in the mode that pump aspirates.
As Fig. 2 and shown in Figure 3, the chromatogram waste liquid that in prior art, citric acid chromatogram extraction method produces directly carries out traditional decontaminated water and processes (as anaerobic biological process, activated sludge process, biomembrance process, Photosynthetic Bacteria etc.), and the waste liquid after processing can not recovery and reuse; The present invention utilizes compound adsorbent to carry out adsorption treatment to citric acid chromatography extraction waste liquid, waste liquid after processing can be directly used in raw material in the fermentative Production citric acid operation of sizing mixing, realize the reuse of citric acid industry chromatogram waste liquid, saved water resources, reduced production cost.
Embodiment 1
The treatment process of citric acid industry chromatogram waste liquid:
(1) pre-treatment: the pending waste liquid from citric acid chromatography production plant enters waste liquid dashpot 1, after short stay therein and buffering, passes in the one-level adsorption tank 2 that agitator 7 is housed;
(2) one-level absorption: add by attapulgite in the above-mentioned waste liquid in one-level adsorption tank 2, acid is attapulgite modified, zeolite powder, wilkinite, the compound adsorbent that ion modification zeolite powder and organic modified zeolite powder form, carry out whip attachment 0.5 h in 60 ℃, mixing speed is 50rpm, wherein, the mass concentration of attapulgite is 30 g/L, the attapulgite modified mass concentration of acid is 50 g/L, the mass concentration of zeolite powder is 30 g/L, bentonitic mass concentration is 50 g/L, the mass concentration of sodium ion modified zeolite powder is 5 g/L, the mass concentration of organic modified zeolite powder is 20 g/L, absorption finishes, and the suspension of the waste liquid of the above-mentioned absorption reaction of process in one-level adsorption tank 2 and compound adsorbent is passed in first grade subsides groove 3 and carries out standing sedimentation, and the settling time is 10h, and sedimentation is complete, and the supernatant liquor that obtains is one-level absorption clear liquid,
(3) secondary absorption: one-level is adsorbed clear liquid pass in the secondary absorption groove 4 that agitator 7 is housed, add above-mentioned compound adsorbent again in one-level absorption clear liquid, carry out whip attachment 0.5 h in 60 ℃, mixing speed is 50 rpm; Absorption finishes, the suspension of the one-level absorption clear liquid of the above-mentioned absorption reaction of process in secondary absorption groove 4 and compound adsorbent is passed in secondary subsider 5 and carries out standing sedimentation, settling time is 0.5 h, sedimentation is complete, the supernatant liquor that obtains is the secondary absorption clear liquid, be the final treatment solution of described waste liquid, secondary absorption clear liquid in secondary subsider 5 is passed in absorption clear liquid groove 6 and preserves, simultaneously, the compound adsorbent mud of sedimentation in secondary subsider 5 is passed in one-level adsorption tank 2 and recycles.
In above-mentioned waste liquor treatment equipment, the mobile of liquid is to realize in the mode that pump aspirates.
Embodiment 2
The treatment process of citric acid industry chromatogram waste liquid:
(1) pre-treatment: the pending chromatogram waste liquid from the citric acid production workshop enters waste liquid dashpot 1, after short stay therein and buffering, passes in the one-level adsorption tank 2 that agitator 7 is housed;
(2) one-level absorption: add by attapulgite in the above-mentioned waste liquid in 1 grade of adsorption tank 2, acid is attapulgite modified, zeolite powder, wilkinite, the compound adsorbent that ion modification zeolite powder and organic modified zeolite powder form, carry out whip attachment 1.5 h in 63 ℃, mixing speed is 120rpm, wherein, the mass concentration of attapulgite is 65 g/L, the attapulgite modified mass concentration of acid is 30 g/L, the mass concentration of zeolite powder is 65 g/L, bentonitic quality is 30 g/L, the mass concentration of ion modification zeolite powder is 12 g/L, the mass concentration of organic modified zeolite powder is 12 g/L, absorption finishes, and the suspension of the waste liquid of the above-mentioned absorption reaction of process in one-level adsorption tank 2 and compound adsorbent is passed in first grade subsides groove 3 and carries out standing sedimentation, and the settling time is 5.5 h, and sedimentation is complete, and the supernatant liquor that obtains is one-level absorption clear liquid,
(3) secondary absorption: one-level is adsorbed clear liquid pass in the secondary absorption groove 4 that agitator 7 is housed, again add above-mentioned compound adsorbent in one-level absorption clear liquid, carry out whip attachment 1.5 h in 63 ℃, mixing speed is 120rpm; Absorption finishes, the suspension of the one-level absorption clear liquid of the above-mentioned absorption reaction of process in secondary absorption groove 4 and compound adsorbent is passed in secondary subsider 5 and carries out standing sedimentation, settling time is 5.5 h, sedimentation is complete, the supernatant liquor that obtains is the secondary absorption clear liquid, is the final treatment solution of described waste liquid; Secondary absorption clear liquid in secondary subsider 5 is passed in absorption clear liquid groove 6 and preserves, simultaneously, the compound adsorbent mud of sedimentation in secondary subsider 5 is passed in one-level adsorption tank 2 and recycles.
In above-mentioned waste liquor treatment equipment, the mobile of liquid is to realize in the mode that pump aspirates.
Embodiment 3
(1) pre-treatment: the pending chromatogram waste liquid from the citric acid production workshop enters waste liquid dashpot 1, after short stay therein and buffering, passes in the one-level adsorption tank 2 that agitator 7 is housed;
(2) one-level absorption: add by attapulgite in the above-mentioned waste liquid in one-level adsorption tank 2, acid is attapulgite modified, zeolite powder, wilkinite, the compound adsorbent that ion modification zeolite powder and organic modified zeolite powder form, carry out whip attachment 2.5h in 65 ℃, mixing speed is 180rpm, wherein, the mass concentration of attapulgite is 100 g/L, the attapulgite modified mass concentration of acid is 10 g/L, the mass concentration of zeolite powder is 100 g/L, bentonitic quality is 10 g/L, the mass concentration of sodium ion modified zeolite powder is 20 g/L, the mass concentration of organic modified zeolite powder is 5 g/L, absorption finishes, and the suspension of the waste liquid of the above-mentioned absorption reaction of process in one-level adsorption tank 2 and compound adsorbent is passed in first grade subsides groove 3 and carries out standing sedimentation, and the settling time is 0.5h, and sedimentation is complete, and the supernatant liquor that obtains is one-level absorption clear liquid,
(3) secondary absorption: one-level is adsorbed clear liquid pass in the secondary absorption groove 4 that agitator 7 is housed, again add above-mentioned compound adsorbent in one-level absorption clear liquid, and carry out whip attachment 2.5h, mixing speed is 180rpm; Absorption finishes, the suspension of the one-level absorption clear liquid of the above-mentioned absorption reaction of process in secondary absorption groove 4 and compound adsorbent is passed in secondary subsider 5 and carries out standing sedimentation, settling time is 0.5h, sedimentation is complete, the supernatant liquor that obtains is the secondary absorption clear liquid, is the final treatment solution of described waste liquid; Secondary absorption clear liquid in secondary subsider 5 is passed in absorption clear liquid groove and preserves, simultaneously, the compound adsorbent mud of sedimentation in secondary subsider 5 is passed in one-level adsorption tank 2 and recycles.
In above-mentioned waste liquor treatment equipment, the mobile of liquid is to realize in the mode that pump aspirates.
Before and after embodiment 1～embodiment 3 citric acid chromatogram extraction method liquid waste disposal, the indices measurement result is referring to table 1.
Table 1
By table 1 data as can be known, embodiment 3 treatment processs are the highest to the clearance of organic acid, total reducing sugar, total nitrogen, reach respectively 95%, 28%, 42%.After measured, before processing, the pH value of chromatogram waste liquid is 2.5, transmittance is 1%, after adsorption treatment of the present invention, the pH value of secondary absorption clear liquid reaches more than 6.0, transmittance reaches 10%, organic acid and pigment content obviously reduce, simultaneously, in the secondary absorption clear liquid, total reducing sugar and total nitrogen have obtained suitable reservation, can be used as the required Carbon and nitrogen sources of mycelial growth in fermenting process, and then are applied to raw material in the fermentative Production citric acid operation of sizing mixing, therefore, the present invention has realized the recovery and reuse of citric acid chromatogram extraction method waste liquid.
Embodiment 4
The recycling method of citric acid industry chromatogram waste liquid: the secondary absorption clear liquid in absorption clear liquid groove in embodiment 1 is directly used in raw slurry modulating process in the fermentative Production citric acid.
Take corn 200g, with shredder, it being ground to fineness is 40 purpose Semen Maydis powder, to this Semen Maydis powder, adds the secondary absorption clear liquid that embodiment 1 adsorbs in the clear liquid groove, after mixing and stirring, make the Semen Maydis powder slurry, wherein, in described Semen Maydis powder slurry, the mass concentration of Semen Maydis powder is 200g/L.
Embodiment 5
The recycling method of citric acid industry chromatogram waste liquid: the secondary in absorption clear liquid groove in embodiment 2 is directly used in raw material in the fermentative Production citric acid industry operation of sizing mixing.
Take cassava 250g, with shredder, it being ground to fineness is 50 purpose Tapioca Starchs, to this Tapioca Starch, adds the secondary absorption clear liquid that embodiment 2 adsorbs in the clear liquid grooves, after mixing and stirring, make the Tapioca Starch slurry, wherein, in described Tapioca Starch slurry, the mass concentration of Tapioca Starch is 250g/L.
The recycling method of citric acid industry chromatogram waste liquid: the secondary absorption clear liquid in absorption clear liquid groove in embodiment 3 is directly used in raw material in the fermentative Production citric acid industry operation of sizing mixing.
Take wheat starch 260g, with shredder, it is ground to fineness 60 orders, to this wheat starch, add the secondary absorption clear liquid that embodiment 3 adsorbs in the clear liquid grooves, after mixing and stirring, make wheat starch pulp, wherein, in described corn starch liquid, the mass concentration of W-Gum is 260g/L.
Embodiment 7
The recycling method of citric acid industry chromatogram waste liquid: the secondary absorption clear liquid in absorption clear liquid groove in embodiment 3 is directly used in raw material in the fermentative Production citric acid industry operation of sizing mixing.
Take Ipomoea batatas 320g, with shredder, it being ground to fineness is 60 purpose sweet potato powder, to this sweet potato powder, adds the secondary absorption clear liquid that embodiment 3 adsorbs in the clear liquid grooves, after mixing and stirring, make the sweet potato powder slurry, wherein, in described sweet potato powder slurry, the mass concentration of sweet potato powder is 320g/L.
The related raw material of above embodiment and Application Example and reagent (comprising attapulgite, zeolite powder, wilkinite, sodium ion modified zeolite powder, organic modified zeolite powder) are commercially available prod, and institute's use industrial equipments is this area conventional equipment.
The above is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive without departing from the spirit and concept in the present invention or associate, within all should thinking and being included in protection scope of the present invention.
Claims (5)
1. the treatment process of a citric acid chromatogram extraction method waste liquid is characterized in that comprising the following steps:
(1) one-level absorption: the compound adsorbent that adds, zeolite powder attapulgite modified by attapulgite, acid, wilkinite, sodium ion modified zeolite powder and organic modified zeolite powder to form in described waste liquid, in 60～65 ℃ of whip attachment 0.5～2.5h, mixing speed is 50～180rpm, last standing sedimentation 0.5～10h, sedimentation is complete, the supernatant liquor that obtains is one-level absorption clear liquid, wherein:
The mass concentration of attapulgite is 30～100g/L,
The attapulgite modified mass concentration of acid is 10～50g/L,
The mass concentration of zeolite powder is 30～100g/L,
Bentonitic mass concentration is 10～50g/L,
The mass concentration of sodium ion modified zeolite powder is 5～20g/L,
The mass concentration of organic modified zeolite powder is 5～20g/L;
(2) secondary absorption: again add above-mentioned compound adsorbent in step (1) gained one-level absorption clear liquid, again carry out whip attachment and sedimentation processing according to the described method of step (1), the supernatant liquor that obtains is the secondary absorption clear liquid, is the final treatment solution of described waste liquid.
2. the treatment process of citric acid chromatogram extraction method waste liquid according to claim 1, is characterized in that: the described compound adsorbent recycling of step (1) and step (2) 2～5 times.
3. the recycling method of a citric acid chromatogram extraction method waste liquid, it is characterized in that: claim 1 gained secondary absorption clear liquid is directly used in raw slurry modulating process in the fermentative Production citric acid, its raw material with the fermentative Production citric acid is mixed and stirs, make raw slurry.
4. the recycling method of citric acid chromatogram extraction method waste liquid according to claim 3 is characterized in that: the raw material of described fermentative Production citric acid is selected from a kind of in Semen Maydis powder, Tapioca Starch, wheat starch, sweet potato powder.
5. the recycling method of citric acid chromatogram extraction method waste liquid according to claim 3 is characterized in that: the add-on of described secondary absorption clear liquid reaches 200～320 g/L with the mass concentration of raw material in described raw slurry of described fermentative Production citric acid and is as the criterion.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4720579A (en) * | 1986-12-18 | 1988-01-19 | Uop Inc. | Separation of citric acid from fermentation broth with a neutral polymeric adsorbent |
| CN1034392A (en) * | 1986-12-18 | 1989-08-02 | 环球油品公司 | With means of nonzeolitic polymeric adsorbant separation of citric acid from fermented liquid |
| CN1853770A (en) * | 2005-04-27 | 2006-11-01 | 李兆辉 | Modified adsorbent for oil component in water, its production and adsorber |
-
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4720579A (en) * | 1986-12-18 | 1988-01-19 | Uop Inc. | Separation of citric acid from fermentation broth with a neutral polymeric adsorbent |
| CN1034392A (en) * | 1986-12-18 | 1989-08-02 | 环球油品公司 | With means of nonzeolitic polymeric adsorbant separation of citric acid from fermented liquid |
| CN1853770A (en) * | 2005-04-27 | 2006-11-01 | 李兆辉 | Modified adsorbent for oil component in water, its production and adsorber |
Non-Patent Citations (2)
| Title |
|---|
| 胡志杰等.色谱法在柠檬酸母液提纯柠檬酸工艺上的应用.《江苏冶金》.2008,第36卷(第S期),第114-115页. |
| 色谱法在柠檬酸母液提纯柠檬酸工艺上的应用;胡志杰等;《江苏冶金》;20080228;第36卷(第S期);第114-115页 * |
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