CN109607821A - A kind of shelf-stable microorganism dephosphorization agent and preparation method thereof - Google Patents
A kind of shelf-stable microorganism dephosphorization agent and preparation method thereof Download PDFInfo
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- CN109607821A CN109607821A CN201811585768.4A CN201811585768A CN109607821A CN 109607821 A CN109607821 A CN 109607821A CN 201811585768 A CN201811585768 A CN 201811585768A CN 109607821 A CN109607821 A CN 109607821A
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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 discloses a kind of shelf-stable microorganism dephosphorization agents and preparation method thereof, are related to sewage purification dephosphorization technique field.It include: that polyP bacteria fermentation is added in fermentation liquid；After having fermented, the solids in current fermentation liquid is filtered out, and low temperature concentration is carried out to fermentation liquid；Be added in fermentation liquid after concentration with the xanthan gum of weight ratio 2 ‰ ~ 5 ‰ of fermentation liquid, the starch of weight ratio 4.5 ‰ ~ 6.5 ‰, the casein-sodium of weight ratio 1.5 ‰ ~ 2.5 ‰, the poloxamer of weight ratio 0.5 ‰ ~ 1.5 ‰, the sodium alginate of weight ratio 0.2 ‰ ~ 0.4 ‰, weight ratio 1 ‰ ~ 2 ‰ Tween 80, stirring and dissolving uniformly shears dispersion and emulsion afterwards, then is spray-dried and microcapsule microbial agent is made.The present invention can open dephosphorization microorganism and external environment isolation, to extend the storage time of microorganism dephosphorization agent and keep it easy to be evenly dispersed in water, improve purification efficiency.
Description
Technical field
The present invention relates to sewage purification dephosphorization technique fields, and in particular to a kind of shelf-stable microorganism dephosphorization agent and its preparation
Method.
Background technique
In recent years, with the sharply expansion of the development of social economy, the construction in city and urban population, rivers and lakes are littoral
Industrial wastewater, sanitary sewage, atmospheric falling dust and the municipal refuse of factory and cities and towns discharge are significantly increased.And the ring of most cities
Border infrastructure construction seriously lags, and sewage is often unprocessed to be just discharged into urban district river and lake, causes through the river in cities and towns
It flows lake water quality to become to deteriorating, seriously affects The Surroundings in Cities quality, so that the urban water-body in 80% or more China is contaminated,
Wherein even there is seasonality and perennially black and odorous water phenomenon.
Excessive P elements are the major reasons for leading to water pollution in water, and traditional sewage dephosphorization method mainly has electrolysis
Method, chemical precipitation method, absorption method, ion-exchange etc., universal complex process have that energy consumption is big, processing cost is high, be easy to cause
Secondary pollution problems.In recent years, microorganism dephosphorization method is increasingly taken seriously, and this method uses polyP bacteria micro- as dephosphorization
Biology, polyP bacteria in oxygen-depleted environment can from water excessive consumption phosphorus, phosphorus can be discharged in water if in the environment of anaerobism.
Microorganism dephosphorization method relies on the characteristic of polyP bacteria, inhales and puts repeatedly to phosphorus, to make phosphor in sewage with Poly-β-hydroxybutyric acid
Form is present in the bacterium of proliferation, and remaining sludge is separated and discharged under aerobic environment, finally plays the purpose of dephosphorization.
This method has the features such as low in cost, construction is simple, quick.
But microorganism dephosphorization agent currently on the market is mostly the addition adsorbent, excipient, battalion in polyP bacteria fermentation liquid
Agent etc. is supported, solid is then dried to and forms.It is found in long-term actual use, when existing microorganism dephosphorization agent has storage
Between short, microorganism be difficult in water evenly dispersed and the defects of play a role, and then affect water body purification efficiency.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of shelf-stable microorganism dephosphorization agent and
Microcapsule microbial agent is made with encapsulation polyP bacteria in preparation method, and microorganism and external environment isolation are opened, thus
Extend storage time and keep it easy to be evenly dispersed in water, improves purification efficiency.
To achieve the above objectives, the technical solution adopted by the present invention is that: provide a kind of shelf-stable microorganism dephosphorization agent and its
Preparation method, comprising the following steps:
S1: being added polyP bacteria in fermentation liquid, ferments, and goes to S2；
S2: after fermentation, the solids in current fermentation liquid is filtered out；Low temperature concentration is carried out to fermentation liquid, goes to S3；
S3: in fermentation liquid after concentration, the xanthan gum for being 2 ‰~5 ‰ with the weight ratio of fermentation liquid, the weight with fermentation liquid is added
Amount is than the casein-sodium and fermentation liquid that the weight ratio of starch and fermentation liquid for 4.5 ‰~6.5 ‰ is 1.5 ‰~2.5 ‰
The sodium alginate and hair that the weight ratio of poloxamer and fermentation liquid that weight ratio is 0.5 ‰~1.5 ‰ is 0.2 ‰~0.4 ‰
The Tween 80 that the weight ratio of zymotic fluid is 1 ‰~2 ‰, carries out shearing dispersion and emulsion after stirring and dissolving is uniform, then be spray-dried and be made
Microcapsule microbial agent.
Based on the above technical solution, the specific steps of S1 include: to be separately added into 50g in the fermentation liquid of 100kg
~1kg polyP bacteria strain, ferments, goes to S2.
Based on the above technical solution, the temperature for carrying out low temperature concentration to fermentation liquid described in S2 is 25~35 DEG C.
Based on the above technical solution, the specific steps of S3 include: the weight ratio of addition and fermentation liquid be 2 ‰~
5 ‰ xanthan gum, the starch for being 4.5 ‰~6.5 ‰ with the weight ratio of fermentation liquid, be 1.5 ‰ with the weight ratio of fermentation liquid~
2.5 ‰ casein-sodium, the poloxamer for being 0.5 ‰~1.5 ‰ with the weight ratio of fermentation liquid are with the weight ratio of fermentation liquid
The Tween 80 that the weight ratio of 0.2 ‰~0.4 ‰ sodium alginate and fermentation liquid is 1 ‰~2 ‰, stirring and dissolving uniformly carry out afterwards
Dispersion and emulsion is sheared, then is spray-dried and microcapsule microbial agent is made.
Based on the above technical solution, the weight of xanthan gum described in S3 is the 3 ‰ of fermentation liquid weight；The starch
Weight be fermentation liquid weight 5.5 ‰；The weight of the casein-sodium is the 2 ‰ of fermentation liquid weight；The poloxamer
Weight is the 1 ‰ of fermentation liquid weight；The weight of the sodium alginate is the 0.3 ‰ of fermentation liquid weight；The weight of the Tween 80
For fermentation liquid weight 1.5 ‰.
The present invention also provides a kind of shelf-stable microorganism dephosphorization agents, are made of the preparation method.
Compared with the prior art, the advantages of the present invention are as follows:
(1) the microorganism dephosphorization agent that the present invention uses is with microcapsule microbial agent made of encapsulation polyP bacteria.With it is existing
Solid fungicide in technology is compared, and the microcapsules of this microbial inoculum can effectively wrap up thallus, and be formed on its surface layer protecting film, will
Thallus is separated with external environment, to extend microbial inoculum storage time；In addition to this, microcapsule microbial agent in launch process with water body
Contact area greatly increase so that the cenobium in microbial inoculum be easy be uniformly dispersed in water, function and effect are good.
(2) microcapsules of the invention are by being added to xanthan gum, starch, casein-sodium, poloxamer, the alginic acid of fermentation liquid
Sodium, Tween 80 carry out shearing dispersion and emulsion after stirring and dissolving is uniform, then are spray-dried.Wherein, the 2 ‰ of addition~5 ‰ are yellow
Virgin rubber has good water-soluble, emulsibility and suspension, to the stability of heat, acid, alkali and salt, inoxidizability and resistance to enzymolysis energy
Power is strong；4.5 ‰~6.5 ‰ starch being added have good filming function, and chance water energy, which quickly dissolves, releases what it was wrapped up
Microorganism can constitute microcapsules cyst membrane together with xanthan gum；1.5 ‰~2.5 ‰ casein-sodiums being added are as emulsifier, favorably
It is evenly dispersed in the fermentation liquid of xanthan gum and starch after concentration, and xanthan gum and starch is promoted to wrap up thallus, so that each
Phage surface can uniform fold have xanthan gum and starch；0.5 ‰~1.5 ‰ poloxamers and 0.2 ‰~0.4 ‰ being added
Xanthan gum and starch structure institute can be improved into microcapsules capsule film strength and toughness in sodium alginate, and it is damaged to reduce cyst membrane；1 ‰ be added
~2 ‰ Tween 80s can make xanthan gum and starch stablize package cenobium, avoid the occurrence of xanthan gum and starch is big as stabilizer
The case where amount aggregation.The encapsulation thallus of formation can substantially reduce the extraneous factors such as air, illumination to by package thallus
Influence improve microbial inoculum function and effect to extend microbial inoculum storage time.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below.
A kind of shelf-stable microorganism dephosphorization agent and preparation method thereof, comprising the following steps:
S1: being added polyP bacteria in fermentation liquid, ferments, and goes to S2.
When practical operation, the specific steps of S1 include: that 50g~1kg polyP bacteria bacterium is separately added into the fermentation liquid of 100kg
Kind, it ferments, goes to S2.
S2: after fermentation, the solids in current fermentation liquid is filtered out；Low temperature concentration is carried out to fermentation liquid, is gone to
S3；.
When specific operation, the temperature for carrying out low temperature concentration to fermentation liquid in S2 is 25~35 DEG C.
S3: be added the xanthan gum for being 2 ‰~5 ‰ with the weight ratio of fermentation liquid, be 4.5 ‰ with the weight ratio of fermentation liquid~
The weight ratio of casein-sodium and fermentation liquid that the weight ratio of 6.5 ‰ starch and fermentation liquid is 1.5 ‰~2.5 ‰ is 0.5 ‰
~1.5 ‰ poloxamer, the sodium alginate for being 0.2 ‰~0.4 ‰ with the weight ratio of fermentation liquid are with the weight ratio of fermentation liquid
1 ‰~2 ‰ Tween 80 carries out shearing dispersion and emulsion after stirring and dissolving is uniform, then is spray-dried and microcapsule microbial agent is made.
When practical operation, in fermentation liquid generally after concentration, the Huang for being 3 ‰~5 ‰ with the weight ratio of fermentation liquid is added
The junket egg that the weight ratio of starch and fermentation liquid that the weight ratio of virgin rubber and fermentation liquid is 5.5 ‰~6.5 ‰ is 1.5 ‰~2 ‰
The weight ratio of poloxamer and fermentation liquid that the weight ratio of white sodium and fermentation liquid is 1 ‰~1.5 ‰ is 0.3 ‰~0.4 ‰
The Tween 80 that the weight ratio of sodium alginate and fermentation liquid is 1 ‰~1.5 ‰, carries out shearing dispersion and emulsion after stirring and dissolving is uniform,
It is spray-dried again and microcapsule microbial agent is made.It is further preferred that xanthan gum is 3 ‰, starch is 5.5 ‰, casein-sodium is 2 ‰,
Poloxamer is 1 ‰, sodium alginate is 0.3 ‰, Tween 80 is 1.5 ‰.
Microcapsules of the invention are formed by the way of spray drying, and casein-sodium is emulsifier, is conducive to xanthan
It is evenly dispersed in the fermentation liquid of glue and starch after concentration, and xanthan gum and starch is promoted to wrap up thallus, so that each thallus table
Face can uniform fold have xanthan gum and starch；Poloxamer and sodium alginate are microcapsules cyst membrane hardening agents, and xanthan can be improved
It is damaged to reduce cyst membrane at microcapsules capsule film strength and toughness for glue and starch structure institute；Tween 80 is stabilizer, can make xanthan gum
Stablize package cenobium with starch, avoids the occurrence of xanthan gum and the case where starch is largely assembled.It is added in fermentation liquid after concentration
Xanthan gum and starch be encapsulation material, form microcapsules cyst membrane, hair can be wrapped in during shearing dispersion and emulsion
Phage surface after ferment, it is i.e. feasible after moisture is evaporated to be wrapped in the phage surface at one layer of cyst membrane by spray drying, most
End form is at microcapsule microbial agent.
Above-mentioned preparation method is described in further detail below by 5 specific embodiments.
Embodiment 1
Embodiment 1 provides a kind of shelf-stable microorganism dephosphorization agent and preparation method thereof, comprising the following steps:
It is separately added into 1kg polyP bacteria strain in the fermentation liquid of 100kg, ferments；After fermentation, it filters out and works as primary fermentation
Solids in liquid, and 35 DEG C at a temperature of to fermentation liquid carry out low temperature concentration；In fermentation liquid after concentration, it is added and sends out
Xanthan gum that the weight ratio of zymotic fluid is 2 ‰, the starch for being 4.5 ‰ with the weight ratio of fermentation liquid are with the weight ratio of fermentation liquid
The sea that the weight ratio of poloxamer and fermentation liquid that the weight ratio of 1.5 ‰ casein-sodium and fermentation liquid is 0.5 ‰ is 0.2 ‰
The Tween 80 that the weight ratio of mosanom and fermentation liquid is 1 ‰, carries out shearing dispersion and emulsion, then do by spraying after stirring and dissolving is uniform
It is dry that microcapsule microbial agent is made.
Embodiment 2
Embodiment 2 provides a kind of shelf-stable microorganism dephosphorization agent and preparation method thereof, comprising the following steps:
It is separately added into 0.15kg polyP bacteria strain in the fermentation liquid of 100kg, ferments；After fermentation, it filters out current
Solids in fermentation liquid, and 25 DEG C at a temperature of to fermentation liquid carry out low temperature concentration；In fermentation liquid after concentration, it is added
Xanthan gum that weight ratio with fermentation liquid is 3 ‰, the starch for being 5 ‰ with the weight ratio of fermentation liquid are with the weight ratio of fermentation liquid
The sea that the weight ratio of poloxamer and fermentation liquid that the weight ratio of 1.7 ‰ casein-sodium and fermentation liquid is 0.6 ‰ is 0.4 ‰
The Tween 80 that the weight ratio of mosanom and fermentation liquid is 1.5 ‰ carries out shearing dispersion and emulsion after stirring and dissolving is uniform, then spraying
Microcapsule microbial agent is made in drying.
Embodiment 3
Embodiment 3 provides a kind of shelf-stable microorganism dephosphorization agent and preparation method thereof, comprising the following steps:
It is separately added into 0.8kg polyP bacteria strain in the fermentation liquid of 100kg, ferments；After fermentation, current hair is filtered out
Solids in zymotic fluid, and 28 DEG C at a temperature of to fermentation liquid carry out low temperature concentration；In fermentation liquid after concentration, be added with
The weight ratio of starch and fermentation liquid that the weight ratio of xanthan gum and fermentation liquid that the weight ratio of fermentation liquid is 2.5 ‰ is 5.5 ‰
For 2 ‰ casein-sodium, with the weight ratio of fermentation liquid be 1 ‰ poloxamer, with the weight ratio of fermentation liquid be 0.3 ‰ seaweed
The Tween 80 that the weight ratio of sour sodium and fermentation liquid is 2 ‰, carries out shearing dispersion and emulsion after stirring and dissolving is uniform, then be spray-dried
Microcapsule microbial agent is made.
Embodiment 4
Embodiment 4 provides a kind of shelf-stable microorganism dephosphorization agent and preparation method thereof, comprising the following steps:
It is separately added into 0.75kg polyP bacteria strain in the fermentation liquid of 100kg, ferments；After fermentation, it filters out current
Solids in fermentation liquid, and 30 DEG C at a temperature of to fermentation liquid carry out low temperature concentration；In fermentation liquid after concentration, it is added
Xanthan gum that weight ratio with fermentation liquid is 4 ‰, the starch for being 6 ‰ with the weight ratio of fermentation liquid are with the weight ratio of fermentation liquid
The weight ratio of poloxamer and fermentation liquid that the weight ratio of 2.5 ‰ casein-sodium and fermentation liquid is 1.5 ‰ is 0.35 ‰
The Tween 80 that the weight ratio of sodium alginate and fermentation liquid is 1.8 ‰, carries out shearing dispersion and emulsion after stirring and dissolving is uniform, then spray
Microcapsule microbial agent is made in mist drying.
Embodiment 5
Embodiment 5 provides a kind of shelf-stable microorganism dephosphorization agent and preparation method thereof, comprising the following steps:
It is separately added into 0.3kg polyP bacteria strain in the fermentation liquid of 100kg, ferments；After fermentation, current hair is filtered out
Solids in zymotic fluid, and 33 DEG C at a temperature of to fermentation liquid carry out low temperature concentration；In fermentation liquid after concentration, be added with
Xanthan gum that the weight ratio of fermentation liquid is 5 ‰, the starch for being 6.5 ‰ with the weight ratio of fermentation liquid are with the weight ratio of fermentation liquid
The weight ratio of poloxamer and fermentation liquid that the weight ratio of 2.2 ‰ casein-sodium and fermentation liquid is 1.3 ‰ is 0.25 ‰
The Tween 80 that the weight ratio of sodium alginate and fermentation liquid is 1.9 ‰, carries out shearing dispersion and emulsion after stirring and dissolving is uniform, then spray
Microcapsule microbial agent is made in mist drying.
The present invention also provides a kind of shelf-stable microorganism dephosphorization agents, are made of above-mentioned preparation method, and storage time is long,
It is uniformly dispersed in water, purification efficiency is high.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (6)
1. a kind of shelf-stable microorganism dephosphorization agent and preparation method thereof, comprising the following steps:
S1: being added polyP bacteria in fermentation liquid, ferments, and goes to S2；
S2: after fermentation, the solids in current fermentation liquid is filtered out；Low temperature concentration is carried out to fermentation liquid, goes to S3；
S3: in fermentation liquid after concentration, the xanthan gum for being 2 ‰ ~ 5 ‰ with the weight ratio of fermentation liquid, the weight with fermentation liquid is added
Weight of the amount than casein-sodium and fermentation liquid that the weight ratio of the starch and fermentation liquid that are 4.5 ‰ ~ 6.5 ‰ is 1.5 ‰ ~ 2.5 ‰
Amount is than the sodium alginate and fermentation liquid that the weight ratio of the poloxamer and fermentation liquid that are 0.5 ‰ ~ 1.5 ‰ is 0.2 ‰ ~ 0.4 ‰
Weight ratio be 1 ‰ ~ 2 ‰ Tween 80, carry out shearing dispersion and emulsion after stirring and dissolving is uniform, then be spray-dried and microcapsules are made
Microbial inoculum.
2. shelf-stable microorganism dephosphorization agent as described in claim 1 and preparation method thereof, which is characterized in that the specific steps of S1
Include: to be separately added into 50g ~ 1kg polyP bacteria strain in the fermentation liquid of 100kg, ferments, go to S2.
3. shelf-stable microorganism dephosphorization agent as described in claim 1 and preparation method thereof, it is characterised in that: to hair described in S2
The temperature that zymotic fluid carries out low temperature concentration is 25 ~ 35 DEG C.
4. shelf-stable microorganism dephosphorization agent as described in claim 1 and preparation method thereof, which is characterized in that the specific steps of S3
It include: that the xanthan gum for being 2 ‰ ~ 5 ‰ with the weight ratio of fermentation liquid, the weight with fermentation liquid is added in fermentation liquid after concentration
The weight of casein-sodium and fermentation liquid that weight ratio than starch and fermentation liquid for 4.5 ‰ ~ 6.5 ‰ is 1.5 ‰ ~ 2.5 ‰
Than for 0.5 ‰ ~ 1.5 ‰ poloxamer, with the weight ratio of fermentation liquid be 0.2 ‰ ~ 0.4 ‰ sodium alginate, with fermentation liquid
The Tween 80 that weight ratio is 1 ‰ ~ 2 ‰, carries out shearing dispersion and emulsion after stirring and dissolving is uniform, then be spray-dried and microcapsule bacterial is made
Agent.
5. shelf-stable microorganism dephosphorization agent as claimed in claim 4 and preparation method thereof, it is characterised in that: xanthan described in S3
The weight of glue is the 3 ‰ of fermentation liquid weight；The weight of the starch is the 5.5 ‰ of fermentation liquid weight；The weight of the casein-sodium
Amount is the 2 ‰ of fermentation liquid weight；The weight of the poloxamer is the 1 ‰ of fermentation liquid weight；The weight of the sodium alginate is
The 0.3 ‰ of fermentation liquid weight；The weight of the Tween 80 is fermentation liquid weight 1.5 ‰.
6. a kind of shelf-stable microorganism dephosphorization agent and preparation method thereof, it is characterised in that: use any one of claims 1 to 5
The preparation method is made.
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Cited By (1)
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| CN111908619A (en) * | 2020-07-08 | 2020-11-10 | 陕西怡维欣环保科技有限公司 | Efficient biochemical combined composite phosphorus removal agent and preparation method thereof |
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Application publication date: 20190412 |