CN106430629A - High-effect bio-compound flocculating agent and use method thereof - Google Patents
High-effect bio-compound flocculating agent and use method thereof Download PDFInfo
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- CN106430629A CN106430629A CN201611057335.2A CN201611057335A CN106430629A CN 106430629 A CN106430629 A CN 106430629A CN 201611057335 A CN201611057335 A CN 201611057335A CN 106430629 A CN106430629 A CN 106430629A
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- aspergillus niger
- flocculation agent
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- nocardia rubra
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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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- 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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical 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
- C02F1/52—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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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a high-effect bio-compound flocculating agent and a use method thereof, belongs to the field of wastewater treatment, and aims to overcome the shortcomings of an inorganic flocculating agent and an organic flocculating agent in the prior art. The bio-compound flocculating agent is prepared from the following raw materials in parts by weight: 30 to 40 parts of aspergillus niger and nocardia rubra cell co-ferment, 50 to 95 parts of sodium carboxymethyl starch with the substituted ratio of 0.1 to 1 and 3 to 6 parts of polyacrylamide, wherein the aspergillus niger and nocardia rubra cell co-ferment is a two-stage fermented product; after being combined with the sodium carboxymethyl starch with the substituted ratio of 0.1 to 1 and the polyacrylamide, the aspergillus niger and nocardia rubra cell co-ferment is outstanding in synergistic effect in the aspect of flocculation; therefore, the high-effect bio-compound flocculating agent is high in flocculation activity, safe, nontoxic, secondary pollution-free and suitable for popularization and application.
Description
Technical field
The present invention relates to a kind of high-effect biology composite flocculation agent and its using method, belong to field of waste water treatment.
Background technology
Flocculant also known as sedimentation agent, as a class can make not free settling in liquid solid suspended particle (particle diameter be-3~
10-7Cm) the material of coagulative precipitation, should in fields such as fermentation industry post processing, food processing, building ship dredging construction, wastewater treatments
With extensive.Flocculant can be divided into inorganic system, biology department and synthesize macromolecular three major types, synthetic polymeric flocculant, and such as poly- third
Acrylamide (PAM), due to high flocculation activity and low cost and obtain wide application, but its residue be difficult biological
Degraded, and monomer has strong neurotoxicity and three and causes effects (teratogenesis, mutagenesis, carcinogenic), causes secondary pollution to make which
Application is restricted greatly.Many fields are especially prohibitted the use of in food industry now, and current people are research sight steering
The research and development of microbial flocculant and application come up.
Microbial flocculant is the biomacromolecule material for being produced by microorganism, with the property for making other coagulation of materials precipitations
Can, while it is in extensive range to have a flocculation, and efficiently, nontoxic, the features such as pollution-free. it overcomes conventional inorganic flocculating agent and organic
Flocculant shortcoming that is harmful and being also easy to produce secondary pollution, and bionic means can be taken to realize industrialization, because
This exploitation microbial flocculant, to improving production technology, health to the mankind and environmental conservation and the production of pollution-free food are all
There is important meaning, and have broad application prospects.
The factor of impact microbial flocculant generation mainly includes the species of bacterium for producing flocculant, medium component, culture
Condition etc..The species difference of microorganism, the ability which produces flocculant is also different.All shadows such as the carbon-nitrogen ratio of culture medium, somatomedin
Ring the generation to flocculant.The general generation for being conducive to flocculant containing monosaccharide, nutritious culture medium.Different microorganisms produce wadding
Needed for solidifying agent, the pH of fermentation liquid is also different, and generally growth Optimal pH is also inconsistent with the Optimal pH of product flocculant.General producing is flocculated
The optimum temperature of agent is between 25-35 DEG C, and temperature is too low to affect thalli growth, and temperature is too high, can make produced by flocculant
Activity reduction.The excessive or how little yield that can all affect thalli growth and flocculant of ventilation, and different in microorganism
Trophophase ventilation requires also different.
Current water environment pollution is serious, and sanitary sewage, industrial wastewater and micro-polluted source water water quality are increasingly complicated, to flocculation
The needs of agent are also increasingly various, and in water treatment procedure, variety classes flocculant compounding use becomes having for enhanced flocculation (coagulation)
One of effect means.Biological flocculant can improve wadding with compounding uses such as inorganic flocculating agent iron chloride, aluminum chloride, aluminum sulfate
While solidifying outlet effect, can not only effectively reduce the dosage of medicament, moreover it is possible to so that the residual aluminum of water outlet or the content of residual ferrum is significantly dropped
Low.On the one hand, the use cost of biological flocculant can be reduced consumption less；On the other hand, the reduction of inorganic medicament residual quantity
Improve the biological safety of water outlet.
Content of the invention
The present invention is for the shortcoming of inorganic flocculating agent and organic flocculant in prior art, there is provided a kind of biological compound wadding
Solidifying agent, the biological composite flocculation agent includes the flocculating agent composition being made up of biofermentation thing and natural macromolecule flocculating agent.
Biology composite flocculation agent flocculation activity height of the present invention, safety non-toxic, the feature of non-secondary pollution.
The present invention solves above-mentioned technical problem by following technical proposals：
A kind of high-effect biology composite flocculation agent, including the raw material of following weight portion：Aspergillus niger and nocardia rubra
Common fermentation thing 30-40 part, substitution value are 0.1～1 carboxymethyl starch sodium 50-95 part, polyacrylamide 3-6 part.It is furthermore preferred that
35 parts of the common fermentation thing of aspergillus niger and nocardia rubra, substitution value are 0.1～1 75 parts of carboxymethyl starch sodium, polyacrylamide
5 parts of amine.
The preparation method of the wherein common fermentation thing of aspergillus niger and nocardia rubra is two-stage nitration fermentation method, specifically includes as follows
Step：Fermentation medium sterilizing after, access 10% nocardia rubra seed fermentation liquid, control fermentation temperature be 30-32 DEG C,
Ventilation is 1.5-1.7m340-44h is cultivated under/h, now accesses 10% aspergillus niger seed fermentation liquid, control fermentation temperature
It is 1.8-2.2m to spend for 26-29 DEG C, ventilation326-30h is cultivated under/h, obtain final product.
Fermentation medium (g/L) used in the sweat of the common fermentation thing of above-mentioned aspergillus niger and nocardia rubra
For：Glucose 10g, K2HPO42g, KH2PO42g, MgSO4·7H2O 0.2g, CaCl20.1g, carbamide 0.5g, yeast extract
0.5g, pH7.2-7.5,120 DEG C of sterilizing 30min.
In sweat of the present invention, it is right that described nocardia rubra and aspergillus niger are in when fermentation medium is accessed
Number trophophase.The formula of the seed culture medium of wherein described nocardia rubra is：Glucose 1%, yeast powder 1%,
PH7.0-7.2, its condition of culture is 26-28 DEG C, shaking speed 150-180r/min for cultivation temperature.The kind of described aspergillus niger
Sub- culture medium is composition (g/L)：Peptone 10.0g, glucose 40.0g, pH7.0-7.2, its condition of culture for cultivation temperature is
27-29 DEG C, shaking speed 120-140r/min.
The present invention also provides a kind of preparation method of above-mentioned high-effect biology composite flocculation agent, and which comprises the steps：Will
Substitution value is the common fermentation thing that 0.1～1 carboxymethyl starch sodium and polyacrylamide are added to aspergillus niger and nocardia rubra
In obtain final product.
The present invention also provides a kind of using method of above-mentioned high-effect biology composite flocculation agent, described biological composite flocculation
It is 180-210mL/L that agent is used for the input amount of flocculant during wastewater treatment, it is preferred that input amount is 200mL/L.
High-effect biology composite flocculation agent of the present invention has following compared with prior art when being used for wastewater treatment
Technical advantage：
1) biology composite flocculation agent of the present invention is the natural native biopolymer that belongs to, and structure is more complicated.From
See the various polysaccharides that produce mainly in microbial metabolism, protein or there is saccharide and albumen in chemical composition
The macromolecular compound that matter is formed, it is that not only flocculating effect is good which is used for flocculation process, and environmental protection, application value
High.
2) flocculating effect that present invention biology composite flocculation agent is produced shows than one of which flocculant effect is used alone
Write, aspergillus niger in described Composite fully deproteinised bone and the common fermentation thing of nocardia rubra in flocculation process with fibre
The plain xanthic acid of dimension and polyacrylamide generate significant synergism, and flocculating effect is more preferably excellent.
Specific embodiment
Further describe the present invention with reference to specific embodiment, advantages of the present invention and feature will be with description and
Apparent.But embodiment is only exemplary, does not constitute any restriction to the scope of the present invention.Those skilled in the art should
It should be appreciated that, the details of technical solution of the present invention and form can be repaiied lower without departing from the spirit and scope of the present invention
Change or replace, but these modifications and replacement are each fallen within protection scope of the present invention.
The high-effect biology composite flocculation agent of the present invention of embodiment 1 and its using method
A kind of high-effect biology composite flocculation agent, including the raw material of following weight portion：Aspergillus niger and nocardia rubra
30 parts of common fermentation thing, substitution value are 0.1～1 50 parts of carboxymethyl starch sodium, 3 parts of polyacrylamide.
The preparation method of the wherein common fermentation thing of aspergillus niger and nocardia rubra is two-stage nitration fermentation method, specifically includes as follows
Step：After fermentation medium sterilizing, 10% nocardia rubra seed fermentation liquid is accessed, control fermentation temperature is 30 DEG C, leads to
Tolerance is 1.5m3Under/h cultivate 40h, now access 10% aspergillus niger seed fermentation liquid, control fermentation temperature be 26 DEG C,
Ventilation is 1.8m326h is cultivated under/h, obtain final product.
The fermentation medium (g/L) for being used is：Glucose 10g, K2HPO42g, KH2PO42g, MgSO4·7H2O
0.2g, CaCl20.1g, carbamide 0.5g, yeast extract 0.5g, pH7.2-7.5,120 DEG C of sterilizing 30min.Described red promise Ka Shi
The formula of the seed culture medium of bacterium is：Glucose 1%, yeast powder 1%, pH7.0, its condition of culture is 26 DEG C for cultivation temperature,
Shaking speed 150r/min.The seed culture medium of described aspergillus niger is composition (g/L)：Peptone 10.0g, glucose 40.0g,
PH7.0, its condition of culture is 27 DEG C, shaking speed 120r/min for cultivation temperature.
The preparation method of high-effect biology composite flocculation agent, which comprises the steps：By the carboxylic first that substitution value is 0.1～1
Base Starch Sodium and polyacrylamide are added in the common fermentation thing of aspergillus niger and nocardia rubra and obtain final product, during for wastewater treatment
The input amount of flocculant is 180mL/L.
The high-effect biology composite flocculation agent of the present invention of embodiment 2 and its using method
A kind of high-effect biology composite flocculation agent, including the raw material of following weight portion：Aspergillus niger and nocardia rubra
40 parts of common fermentation thing, substitution value are 0.1～1 95 parts of carboxymethyl starch sodium, 6 parts of polyacrylamide.
The preparation method of the wherein common fermentation thing of aspergillus niger and nocardia rubra is two-stage nitration fermentation method, specifically includes as follows
Step：After fermentation medium sterilizing, 10% nocardia rubra seed fermentation liquid is accessed, control fermentation temperature is 32 DEG C, leads to
Tolerance is 1.7m3Under/h cultivate 44h, now access 10% aspergillus niger seed fermentation liquid, control fermentation temperature be 29 DEG C,
Ventilation is 2.2m330h is cultivated under/h, obtain final product.
The seed of the fermentative medium formula, the formula of the seed culture medium of nocardia rubra and aspergillus niger that are used
Culture medium prescription and condition of culture are with embodiment 1.
The preparation method of high-effect biology composite flocculation agent, which comprises the steps：By the carboxylic first that substitution value is 0.1～1
Base Starch Sodium and polyacrylamide are added in the common fermentation thing of aspergillus niger and nocardia rubra and obtain final product, during for wastewater treatment
The input amount of flocculant is 210mL/L.
The high-effect biology composite flocculation agent of the present invention of embodiment 3 and its using method
A kind of high-effect biology composite flocculation agent, including the raw material of following weight portion：Aspergillus niger and nocardia rubra
35 parts of common fermentation thing, substitution value are 0.1～1 75 parts of carboxymethyl starch sodium, 5 parts of polyacrylamide.
The preparation method of the wherein common fermentation thing of aspergillus niger and nocardia rubra is two-stage nitration fermentation method, specifically includes as follows
Step：After fermentation medium sterilizing, 10% nocardia rubra seed fermentation liquid is accessed, control fermentation temperature is 32 DEG C, leads to
Tolerance is 1.6m3Under/h cultivate 42h, now access 10% aspergillus niger seed fermentation liquid, control fermentation temperature be 28 DEG C,
Ventilation is 2.0m326-30h is cultivated under/h, obtain final product.
The seed of the fermentative medium formula, the formula of the seed culture medium of nocardia rubra and aspergillus niger that are used
Culture medium prescription is with embodiment 1.Described nocardia rubra condition of culture is 27 DEG C, shaking speed 170r/ for cultivation temperature
min.The condition of culture of described aspergillus niger is 28 DEG C, shaking speed 130r/min for cultivation temperature.
The preparation method of high-effect biology composite flocculation agent, which comprises the steps：By the carboxylic first that substitution value is 0.1～1
Base Starch Sodium and polyacrylamide are added in the common fermentation thing of aspergillus niger and nocardia rubra and obtain final product, during for wastewater treatment
The input amount of flocculant is 190mL/L.
The high-effect biology composite flocculation agent of the present invention of embodiment 4 and its using method
A kind of high-effect biology composite flocculation agent, including the raw material of following weight portion：Aspergillus niger and nocardia rubra
34 parts of common fermentation thing, substitution value are 0.1～1 85 parts of carboxymethyl starch sodium, 5 parts of polyacrylamide.
The preparation method of the wherein common fermentation thing of aspergillus niger and nocardia rubra is two-stage nitration fermentation method, specifically includes as follows
Step：After fermentation medium sterilizing, 10% nocardia rubra seed fermentation liquid is accessed, control fermentation temperature is 32 DEG C, leads to
Tolerance is 1.7m3Under/h cultivate 44h, now access 10% aspergillus niger seed fermentation liquid, control fermentation temperature be 29 DEG C,
Ventilation is 2.2m326h is cultivated under/h, obtain final product.
The seed of the fermentative medium formula, the formula of the seed culture medium of nocardia rubra and aspergillus niger that are used
Culture medium prescription is with embodiment 1.Described nocardia rubra condition of culture is 27 DEG C, shaking speed 170r/ for cultivation temperature
min.The condition of culture of described aspergillus niger is 28 DEG C, shaking speed 130r/min for cultivation temperature.
The preparation method of high-effect biology composite flocculation agent, which comprises the steps：By the carboxylic first that substitution value is 0.1～1
Base Starch Sodium and polyacrylamide are added in the common fermentation thing of aspergillus niger and nocardia rubra and obtain final product, during for wastewater treatment
The input amount of flocculant is 195mL/L.
The high-effect biology composite flocculation agent of the present invention of embodiment 5 and its using method
A kind of high-effect biology composite flocculation agent, including the raw material of following weight portion：Aspergillus niger and nocardia rubra
38 parts of common fermentation thing, substitution value are 0.1～1 68 parts of carboxymethyl starch sodium, 4 parts of polyacrylamide.
The preparation method of the wherein common fermentation thing of aspergillus niger and nocardia rubra is two-stage nitration fermentation method, specifically includes as follows
Step：Fermentation medium sterilizing after, access 10% nocardia rubra seed fermentation liquid, control fermentation temperature be 30-32 DEG C,
Ventilation is 1.5-1.7m340-44h is cultivated under/h, now accesses 10% aspergillus niger seed fermentation liquid, control fermentation temperature
It is 1.8-2.2m to spend for 26-29 DEG C, ventilation326-30h is cultivated under/h, obtain final product.
The seed of the fermentative medium formula, the formula of the seed culture medium of nocardia rubra and aspergillus niger that are used
Culture medium prescription is with embodiment 1.Described nocardia rubra condition of culture is 28 DEG C, shaking speed 180r/ for cultivation temperature
min.The condition of culture of described aspergillus niger is 26 DEG C, shaking speed 140r/min for cultivation temperature.
The preparation method of high-effect biology composite flocculation agent, which comprises the steps：By the carboxylic first that substitution value is 0.1～1
Base Starch Sodium and polyacrylamide are added in the common fermentation thing of aspergillus niger and nocardia rubra and obtain final product, during for wastewater treatment
The input amount of flocculant is 205mL/L.
The flocculating experiment of 6 present invention of embodiment biology composite flocculation agent is determined
10mg dry weight saccharomyces cerevisiae is added in standard colorimetric tube, 1mL culture fluid is added, adjusted with 0.01mo l/L HCl
Section pH to 3.5, plus deionized water is to 5mL, 30 DEG C, gently vibrates 5min, then stands 10min, in 721 type spectrophotometers
Determine at 540nm.Supernatant turbidity B, with the upper phase liquid turbidity A that is not added with culture fluid as control, is come by the minimizing of turbidity true
Determine flocculating degree, with flocculating rate quantificational expression flocculation activity.
In formula:The OD value of supernatant is compareed at A-540nm；
Sample supernatant OD value at B-540nm
The flocculating rate of embodiment 1-5 is determined using said method, and matched group 1, matched group 2 and matched group 3 are set, wherein
Matched group 1 is that (inputs concentration is that 200mL/L, matched group 2 is for the common fermentation thing of aspergillus niger and nocardia rubra in embodiment 3
Substitution value is 0.1～1 carboxymethyl starch sodium (input concentration be 50g/L), and matched group 3 is that (input amount is polyacrylamide
100g/L), its flocculating rate measurement result is as shown in table 1.
The flocculating experiment of 1 present invention of table biology composite flocculation agent is determined
| Flocculant | Addition | Flocculating rate |
| Embodiment 1 | 200mL/L | 91.2% |
| Embodiment 2 | 200mL/L | 93.4% |
| Embodiment 3 | 200mL/L | 96.1% |
| Embodiment 4 | 200mL/L | 93.8% |
| Embodiment 5 | 200mL/L | 92.3% |
| Matched group 1 | 200mL/L | 32.6% |
| Matched group 2 | 50g/L | 15.3% |
| Matched group 3 | 100g/L | 11.4% |
As can be seen from Table 1, the common fermentation thing of aspergillus niger and nocardia rubra has certain flocculating effect, but flocculates
Effect is undesirable, and after which is combined with the carboxymethyl starch sodium that substitution value is 0.1～1 and polyacrylamide, flocculating effect is significantly carried
Height, point out three kinds of active components in terms of flocculation with significant synergism, the wherein flocculating effect of the embodiment of the present invention 3 most
Good.
Claims (10)
1. a kind of high-effect biology composite flocculation agent, including the raw material of following weight portion：Being total to of aspergillus niger and nocardia rubra
Fermented product 30-40 part, substitution value are 0.1～1 carboxymethyl starch sodium 50-95 part, polyacrylamide 3-6 part.
2. as claimed in claim 1 high-effect biology composite flocculation agent, it is characterised in which includes the original of following weight portion
Material：35 parts of the common fermentation thing of aspergillus niger and nocardia rubra, substitution value are 0.1～1 75 parts of carboxymethyl starch sodium, polypropylene
5 parts of amide.
3. as claimed in claim 1 or 2 high-effect biology composite flocculation agent, it is characterised in that described aspergillus niger and redness
The preparation method of nocardial common fermentation thing is two-stage nitration fermentation method, specifically includes following steps：After fermentation medium sterilizing, connect
Enter 10% nocardia rubra seed fermentation liquid, control fermentation temperature is 30-32 DEG C, ventilation is 1.5-1.7m3/h condition
Lower culture 40-44h, now accesses 10% aspergillus niger seed fermentation liquid, and control fermentation temperature is 26-29 DEG C, ventilation is
1.8-2.2m3/h under the conditions of cultivate 26-30h, obtain final product.
4. high-effect biology composite flocculation agent as claimed in claim 3, it is characterised in that described aspergillus niger and red promise card
In the preparation method of the common fermentation thing of Salmonella, the group of 1L fermentation medium is divided into glucose 10g, K2HPO42g, KH2PO42g,
MgSO4·7H2O 0.2g, CaCl20.1g, carbamide 0.5g, yeast extract 0.5g, pH7.2-7.5,120 DEG C of sterilizing 30min.
5. high-effect biology composite flocculation agent as claimed in claim 3, it is characterised in that described nocardia rubra and black
Aspergillosis are in exponential phase when fermentation medium is accessed.
6. as claimed in claim 3 high-effect biology composite flocculation agent, it is characterised in that the kind of described nocardia rubra
The formula of sub- culture medium is：Glucose 1%, yeast powder 1%, pH7.0-7.2, its condition of culture is 26-28 DEG C for cultivation temperature,
Shaking speed 150-180r/min.
7. as claimed in claim 3 high-effect biology composite flocculation agent, it is characterised in that described aspergillus niger 1L seed training
Foster based component is：Peptone 10.0g, glucose 40.0g, pH7.0-7.2, its condition of culture is 27-29 DEG C, to shake for cultivation temperature
Bed rotating speed 120-140r/min.
8. one kind prepares high-effect biology composite flocculation agent described in claim 1 or 2, and which is included carboxylic that substitution value is 0.1～1
Methyl starch sodium and polyacrylamide are added in the common fermentation thing of aspergillus niger and nocardia rubra and obtain final product.
9. described in a kind of claim 1 or 2 high-effect biology composite flocculation agent using method, it is characterised in that described life
It is 180-210mL/L that thing composite flocculation agent is used for the input amount of flocculant during wastewater treatment.
10. the using method of biology composite flocculation agent as claimed in claim 1, it is characterised in that the compound wadding of described biology
It is 200mL/L that solidifying agent is used for the input amount of flocculant during wastewater treatment.
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| CN201610134730X | 2016-03-09 | ||
| CN201610134730.XA CN105540875A (en) | 2016-03-09 | 2016-03-09 | High-effect biological composite flocculant and use method thereof |
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| CN108793426A (en) * | 2018-06-19 | 2018-11-13 | 深圳文科园林股份有限公司 | A kind of microbial flocculant compound preparation method and its application in water treatment field |
| CN114380459A (en) * | 2021-12-15 | 2022-04-22 | 南京农业大学 | Method for treating farm wastewater through biological flocculation-electrodialysis and application thereof |
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- 2016-11-26 CN CN201611057335.2A patent/CN106430629A/en not_active Withdrawn
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| CN103525870A (en) * | 2013-10-23 | 2014-01-22 | 嘉兴学院 | Microbial flocculant as well as preparation method and application thereof |
| CN104628149A (en) * | 2014-12-23 | 2015-05-20 | 张琰 | Composite flocculant for treating slaughter wastewater |
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