CN109694164A - A kind of recovery and treatment method of span amino acid mother liquor - Google Patents
A kind of recovery and treatment method of span amino acid mother liquor Download PDFInfo
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- CN109694164A CN109694164A CN201910134843.3A CN201910134843A CN109694164A CN 109694164 A CN109694164 A CN 109694164A CN 201910134843 A CN201910134843 A CN 201910134843A CN 109694164 A CN109694164 A CN 109694164A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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Abstract
The invention belongs to amino acids production field of waste water treatment, and in particular to a kind of recovery and treatment method of span amino acid mother liquor.This method reduces COD value and ammonia nitrogen in amino acid waste liquid by processes such as concentration, precipitating, filtering, saccharomycete cultures while recycling span amino acid mother liquor, is a kind of green technique.
Description
Technical field
The invention belongs to field of waste water treatment, and in particular to a kind of recovery and treatment method of span amino acid mother liquor.
Background technique
Amino acid is the related most basic substance of same vital movement, is the basic unit for constituting organism protein, with
The vital movement of biology has close relationship.It has special physiological function in vivo, is indispensable in organism
One of few nutritional ingredient.Amino acid chemical industry, medicine and in terms of have extremely extensive purposes.Amino acid passes through life
Object fermentation, chemical method etc. are synthesized by artificial mass production.During amino acids production, often a large amount of production of discharge is useless
Water, brings many serious problem of environmental pollutions, and amino acids production industry waste water treatment increasingly obtains the attention of people.Amino acid
Product can generally generate two groups of waste water of mother liquor and wash water in process of production, and two kinds of waste water composition ingredients are essentially identical.Amino acid
Mother liquor waste water salinity and COD value are very high, and salinity is mainly ammonium sulfate or ammonium chloride, ammonia nitrogen concentration can achieve every liter it is thousands of to several
Ten thousand milligrams or more, the formation of COD is mainly the residue of amino acid products and side reaction etc. in production process, and COD concentration also exists
Every liter it is thousands of in addition arrive tens of thousands of milligrams.Mother liquor waste water water body is relatively fewer.Wash water predominantly cleans amino acid products reaction vessel
Process is formed, and salinity and polluter are relatively low in waste water, and ammonia nitrogen and COD content are generally all several hundred to thousands of milligrams at every liter
Concentration.Wash water water body is relatively large, about 3-5 times of mother liquor water.According to amino acid wastewater compositing characteristic, the waste water composition is total
Divide concentrated water and washing lotion two parts, major pollutants are ammonia nitrogen and COD in waste water.In line with the original of energy-saving and emission-reduction resource recycling
Then, it according to the compositing characteristic of two kinds of waste water of mother liquor and wash water, is summarized by the practical experience of engineering, collection respectively can be taken to handle
Then the measure of comprehensive treatment again.Span amino acid mother liquor water is relatively small, ammonium salt (generally ammonium sulfate or ammonium chloride) in waste water
It is the by-product and minute quantity heavy metal or other poisonous and harmful substances that amino acids production technical process synthesizes.Ammonium salt in mother liquor
Concentration generally can achieve more than ten percent, and ammonium salt concentration is higher, be worth with certain recycling, the ammonium sulfate of recycling or
Ammonium chloride generally can be used as industrial chemicals or ammonium fertilizer recycles.The processing of span amino acid mother liquor needs to take reasonable recovery processing
Technique.Ammonia nitrogen and COD are relatively low in amino acid jean-washing wastewater, and water is several times of mother liquor, and water is relatively large, ammonium in waste water
Salinity is lower, and ammonia nitrogen in waste water and COD are influenced by reasons such as production process and operating systems, water quality and quantity variation compared with
Greatly, waste water is using technique is directly recycled, and general cost recovery is higher, and equipment investment is huge, the valuable components in waste water
It is unfavorable for recycling and reusing, the water treatment technologies such as materialization or bioanalysis is generally taken to remove.By to amino acids production waste water group
It analyzes, the ammonia nitrogen and COD in waste water are primary abatement object.Ammonia nitrogen in the waste water is the priority and difficulty of wastewater treatment.Ammonia
The alternative processing method of nitrogen waste water usually has physical method, chemical method, physical-chemical process and biochemical method etc..Physical method has reverse osmosis
Thoroughly, soil irrigation etc.；Chemical method have ion exchange, break point chlorination, byproduct production containing ammonia, burning, catalytic pyrolysis, at electrochemistry
Reason etc.；Physical-chemical process has the way of distillation (i.e. steam stripping), blow-off method etc.；Bioanalysis has algal culture, biological nitration etc..Although
Many methods can be effectively removed ammonia nitrogen, but at present only there is several methods that the place of nitrogen-containing wastewater can be really used in engineering
Reason.The selection of processing technique depend primarily on waste water at being grouped as, require the treatment effect reached and economy.
Common embrane method concentration technology, at present also in the explorative research trial stage, very big by water quality impact, film is easy quilt
Contamination and plugging, backwash frequency of maintenance is high, concentrating degree is limited, and concentrate processing is also relatively cumbersome.And trade effluent is given birth to
Production. art and the horizontal influence of operation, water quality also has larger difference, therefore membrane technology is in the application of trade effluent, it is necessary first to water
Matter is analyzed, and can just be applied after then can be used by lab scale or pilot scale confirmation.
It is general no more than 200mg/L since the concentration that biological bacteria can bear ammonia nitrogen is lower, when ammonia nitrogen is higher than 200-
When 300mg/L, bacterial growth can be inhibited to breed.Therefore biochemical processing process is suitable for ammonia-nitrogen content lower than 200mg/L or so tool
The Low Concentration Ammonia Containing Wastewater of standby biodegradability processing.
Ion-exchange the disadvantage is that be only applicable to ammonia-nitrogen content in 50mg/L waste water below, and exchanger dosage is big need to be again
Raw, regeneration is frequent, and regenerated liquid needs ammonia nitrogen removal again.The technique is used also to require to pre-process waste water to remove and suspend
Object, therefore the higher cost of the method, under comparable sodium, processing cost is 1.5-2 times of other techniques.The break point chlorination technique party
The shortcomings that method is that chlorine dosage is big, costly, operational safety is poor, equipment seriously corroded, is easy to happen danger, every in technical process
The ammonia nitrogen of the oxygen L basicity to be disappeared, so that the ammonia nitrogen of increasing 1mg/L will consume the basicity of 14.3mg/L, to increase total
The content of dissolved solid is relatively suitble to place's amount of Low Concentration Ammonia Containing Wastewater.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of recovery and treatment method of amino mother liquor, this method can
Waste liquid is made full use of, removes COD to the maximum extent, realizes resource reutilization, and be convenient for industrial application.
In order to achieve the above object, the present invention the following technical schemes are provided:
A kind of recovery and treatment method of span amino acid mother liquor, comprising the following steps:
(1) amino acid waste liquid is collected, is concentrated；
(2) vulcanized sodium, flocculant is added, adjusts pH value, precipitating, separation obtain precipitating and supernatant；
(3) micro-filtrate membrane filtration supernatant is used, filtrate is obtained；
(4) quick lime is added, stirs, be passed through air progress stripping；
(5) pH value is adjusted, temperature is controlled, saccharomycete is added, shaking table culture removes COD；
(6) it is stirred for, is passed through air progress stripping；
(7) draining observation pond, adjusts pH value.
Preferably, in step (1), the cycles of concentration is 10-20 times；
Preferably, in step (2), the dosage of the vulcanized sodium is 10-30mg/L；
Preferably, in step (2), the flocculant is at least one of chitosan or gelatin；
Preferably, the dosage of the flocculant is 1000-2000ppm；
Preferably, in step (2), the pH value is 1-5；
Preferably, in step (3), the microfiltration membranes are cellulose acetate microfiltration membranes, and aperture is 0.1-0.2 μm；
Preferably, in step (4), the additional amount of the quick lime with whether generated in adition process be precipitated as judging according to
According to when no longer generating precipitating, stopping is added, and is otherwise continued.
Preferably, in step (5), the pH value is 1-5, and temperature is 20-35 DEG C；
Preferably, in step (5), the revolving speed of the shaking table culture is 50-100rpm；
Preferably, in step (5), the saccharomycete is brewer's yeast, saccharomyces cidri, any bacterium in Candida
Kind；
Preferably, in step (5), the additional amount of the saccharomycete is 0.5-1g/L；
Preferably, in step (7), the pH value is 6-7.
Preferably, the recovery and treatment method of the span amino acid mother liquor, comprising the following steps:
(1) amino acid waste liquid collects, is concentrated 15 times；
(2) vulcanized sodium of 20mg/L, the chitosan or gelatin flocculant of 1500ppm is added, adjusts pH value 1-3, precipitating is divided
From obtaining precipitating and supernatant；
(3) it uses aperture for 0.1-0.2 μm of cellulose acetate micro-filtrate membrane filtration supernatant, obtains filtrate；
(4) quick lime is added, stirs, be passed through air progress stripping；
(5) pH value 2-5 is adjusted, temperature is controlled to 20-35 DEG C, the brewer's yeast, saccharomyces cidri, vacation of 0.5-1g/L is added
Any strain in silk yeast, shaking table culture remove COD；
(6) it is stirred for, is passed through air progress stripping；
(7) draining observation pond adjusts pH value to 6-7.
Containing largely using substance in span amino acid mother liquor, as reduced sugar, organic acid, amino acid, gland he cry of certain animals and inorganic
Salt etc. can carry out mycoprotein production, biological organic complex fertilizer, the production for detesting feeding biogas etc., realize its resource utilization, this hair
Bright is that span amino acid mother liquor is used for culture yeasts bacterium under the premise of comprehensively considering the characteristic of span amino acid mother liquor and bacterial growth, one
Aspect saccharomycete consumes each utility in amino acid waste liquid during the growth process, while removing amino acid to the greatest extent
COD in mother liquor；On the other hand, using yeast mother solution as the nutriment of Yeast Growth, to reach resource reutilization
Purpose.
Two steps are passed through air and carry out stripping in treatment process, for the first time in order to by the removal in filtrate, in order to avoid influence yeast
The incubation of bacterium is further to remove generation or remaining ammonia nitrogen in aforementioned process, to reach discharge standard for the second time.
Quick lime, vulcanized sodium, microfiltration membranes application can be by the sulfate ion and heavy metal precipitation in amino acid waste liquid
Fall, while other microorganisms, the organic pollutant etc. in filtrate being removed, eliminates sulfate ion and heavy metal to saccharomycete
It generates and inhibits and poison, while also avoiding other microorganisms, organic pollutant etc. to the shadow of the growth and breeding of later period saccharomycete
It rings.
Compared with the prior art, present invention has an advantage that
(1) various impurity can be preferably removed, and can be improved ammonia nitrogen and the removal rate of COD；
(2) this method can be adapted for the processing of ammonia-nitrogen content and the biggish span amino acid mother liquor of sulfate radical content；
(3) preferably amino acid waste liquid is recycled, plays the role of economizing on resources, the saccharomycete being trained can be with
For producing other products, production cost is reduced, is a kind of environmentally friendly processing method.
Specific embodiment
Embodiment 1
A kind of recovery and treatment method of span amino acid mother liquor, comprising the following steps:
(1) amino acid waste liquid collects, is concentrated 15 times；
(2) chitosan of the vulcanized sodium of 20mg/L, 1500ppm is added, adjusts pH value 3, precipitating, separation, must precipitate and on
Clear liquid；
(3) it uses aperture for 0.1 μm of cellulose acetate micro-filtrate membrane filtration supernatant, obtains filtrate；
(4) quick lime is added, stirs, be passed through air progress stripping；When no longer generate precipitating when, stop be added, otherwise after
It is continuous；
(5) pH value 2 is adjusted, controls temperature to 30 DEG C, the brewer's yeast strain of 0.6g/L is added, shaking table culture removes
COD；
(6) it is stirred for, is passed through air progress stripping；
(7) draining observation pond adjusts pH value to 7.
Embodiment 2
A kind of recovery and treatment method of span amino acid mother liquor, comprising the following steps:
(1) amino acid waste liquid collects, is concentrated 10 times；
(2) vulcanized sodium of 10mg/L, the gelatin of 1000ppm is added, adjusts pH value 1, precipitating, separation obtain precipitating and supernatant
Liquid；
(3) it uses aperture for 0.2 μm of cellulose acetate micro-filtrate membrane filtration supernatant, obtains filtrate；
(4) quick lime is added, stirs, be passed through air progress stripping；When no longer generate precipitating when, stop be added, otherwise after
It is continuous；
(5) pH value 5 is adjusted, temperature is controlled to 20 DEG C, the saccharomyces cidri strain of 0.5g/L is added, is shaken under 50-100rpm
Bed culture, removes COD；
(6) it is stirred for, is passed through air progress stripping；
(7) draining observation pond adjusts pH value to 6.
Embodiment 3
A kind of recovery and treatment method of span amino acid mother liquor, comprising the following steps:
(1) amino acid waste liquid collects, is concentrated 20 times；
(2) chitosan of the vulcanized sodium of 20mg/L, 2000ppm is added, adjusts pH value 5, precipitating, separation, must precipitate and on
Clear liquid；
(3) it uses aperture for 0.2 μm of cellulose acetate micro-filtrate membrane filtration supernatant, obtains filtrate；
(4) quick lime is added, stirs, be passed through air progress stripping；When no longer generate precipitating when, stop be added, otherwise after
It is continuous；
(5) pH value 1 is adjusted, controls temperature to 35 DEG C, the candida strain of 1g/L is added, shaking table culture removes COD；
(6) it is stirred for, is passed through air progress stripping；
(7) draining observation pond adjusts pH value to 6.5.
Comparative example 1 (compared with Example 1, is free of quick lime)
A kind of recovery and treatment method of span amino acid mother liquor, comprising the following steps:
(1) amino acid waste liquid collects, is concentrated 15 times；
(2) chitosan of the vulcanized sodium of 20mg/L, 1500ppm is added, adjusts pH value 2, precipitating, separation, must precipitate and on
Clear liquid；
(3) it uses aperture for 0.1 μm of cellulose acetate micro-filtrate membrane filtration supernatant, obtains filtrate；
(4) pH value 2 is adjusted, controls temperature to 30 DEG C, the brewer's yeast strain of 0.6g/L is added, shaking table culture removes
COD；
(5) it is stirred for, is passed through air progress stripping；
(6) draining observation pond adjusts pH value to 7.
Comparative example 2 (compared with Example 1, is free of vulcanized sodium)
A kind of recovery and treatment method of span amino acid mother liquor, comprising the following steps:
(1) amino acid waste liquid collects, is concentrated 15 times；
(2) chitosan of 1500ppm is added, adjusts pH value 2, precipitating, separation obtain precipitating and supernatant；
(3) it uses aperture for 0.1 μm of cellulose acetate micro-filtrate membrane filtration supernatant, obtains filtrate；
(4) quick lime is added, stirs, be passed through air progress stripping；When no longer generate precipitating when, stop be added, otherwise after
It is continuous；
(5) pH value 2 is adjusted, controls temperature to 30 DEG C, the brewer's yeast strain of 0.6g/L is added, shaking table culture removes
COD；
(6) it is stirred for, is passed through air progress stripping；
(7) draining observation pond adjusts pH value to 7.
Comparative example 3 (compared with Example 1, no mocromembrane filtering)
A kind of recovery and treatment method of span amino acid mother liquor, comprising the following steps:
(1) amino acid waste liquid collects, is concentrated 15 times；
(2) chitosan of the vulcanized sodium of 20mg/L, 1500ppm is added, adjusts pH value 2, precipitating, separation, must precipitate and on
Clear liquid；
(3) quick lime is added in supernatant, stirs, is passed through air progress stripping；When no longer generating precipitating, stop adding
Enter, otherwise continues；
(4) pH value 2 is adjusted, controls temperature to 30 DEG C, the brewer's yeast strain of 0.6g/L is added, shaking table culture removes
COD；
(5) it is stirred for, is passed through air progress stripping；
(6) draining observation pond adjusts pH value to 7.
Effect example
Span amino acid mother liquor waste water system before and after the processing is detected referring to national standard GB/T 11914-89 " measurement of COD "
Middle COD measures ammonia-nitrogen content referring to GB/T 7479-87 " the measurement reagent colorimetric method of water quality ammonium ", and according to before and after the processing
Content calculates the removal rate of the two.
| Test group | COD removal rate (%) | Ammonia nitrogen removal frank (%) |
| Embodiment 1 | 79 | 88 |
| Embodiment 2 | 81 | 83 |
| Embodiment 3 | 83 | 84 |
| Comparative example 1 | 72 | 61 |
| Comparative example 2 | 65 | 75 |
| Comparative example 3 | 62 | 69 |
It follows that treatment process through the invention, COD and ammonia-nitrogen content in span amino acid mother liquor can largely be gone
It removes, technical solution provided by the invention plays the effect of preferable span amino acid mother liquor recovery processing.
Above-mentioned detailed description is illustrating for one of them possible embodiments of the present invention, the embodiment not to
The scope of the patents of the invention is limited, all equivalence enforcements or change without departing from carried out by the present invention are intended to be limited solely by the technology of the present invention
In the range of scheme.
Claims (10)
1. a kind of recovery and treatment method of span amino acid mother liquor, comprising the following steps:
(1) amino acid waste liquid is collected, is concentrated；
(2) vulcanized sodium, flocculant is added, adjusts pH value, precipitating, separation obtain precipitating and supernatant；
(3) micro-filtrate membrane filtration supernatant is used, filtrate is obtained；
(4) quick lime is added, stirs, be passed through air progress stripping；
(5) pH value is adjusted, temperature is controlled, saccharomycete is added, shaking table culture removes COD；
(6) it is stirred for, is passed through air progress stripping；
(7) it is discharged into water outlet observation pond, adjusts pH value.
2. the recovery and treatment method of span amino acid mother liquor as described in claim 1, which is characterized in that in step (1), the concentration
Multiple is 10-20 times.
3. the recovery and treatment method of span amino acid mother liquor as described in claim 1, which is characterized in that in step (2), the vulcanization
The dosage of sodium is 10-30mg/L.
4. the recovery and treatment method of span amino acid mother liquor as described in claim 1, which is characterized in that in step (2), the flocculation
Agent is at least one of chitosan or gelatin.
5. the recovery and treatment method of span amino acid mother liquor as described in claim 1, which is characterized in that in step (2), the pH value
For 1-5.
6. the recovery and treatment method of span amino acid mother liquor as described in claim 1, which is characterized in that in step (3), the micro-filtration
Film is cellulose acetate microfiltration membranes, and aperture is 0.1-0.2 μm.
7. the recovery and treatment method of span amino acid mother liquor as described in claim 1, which is characterized in that in step (5), the shaking table
The revolving speed of culture is 50-100rpm.
8. the recovery and treatment method of span amino acid mother liquor as described in claim 1, which is characterized in that in step (5), the pH value
For 1-5, temperature is 20-35 DEG C.
9. the recovery and treatment method of span amino acid mother liquor as described in claim 1, which is characterized in that in step (5), the yeast
Bacterium is brewer's yeast, saccharomyces cidri, Candida.
10. the recovery and treatment method of span amino acid mother liquor as described in claim 1, which is characterized in that in step (7), the pH
Value is 6-7.
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| CN110916012A (en) * | 2019-09-14 | 2020-03-27 | 赵兰坤 | Process for preparing poultry feed by treating amino acid mother liquor with microorganisms |
| CN111892240A (en) * | 2020-07-22 | 2020-11-06 | 宜昌三峡普诺丁生物制药有限公司 | Method for treating amino acid extraction wastewater by using hydrated lime to replace neutralizer and flocculant |
| CN113998832A (en) * | 2020-11-02 | 2022-02-01 | 呼伦贝尔东北阜丰生物科技有限公司 | Method for advanced treatment of total nitrogen in amino acid wastewater |
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| CN109694164B (en) | 2019-12-13 |
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