CN105062912A - Phenolic wastewater treatment microbial inoculum as well as preparation method and application thereof - Google Patents
Phenolic wastewater treatment microbial inoculum as well as preparation method and application thereof Download PDFInfo
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- CN105062912A CN105062912A CN201510424557.2A CN201510424557A CN105062912A CN 105062912 A CN105062912 A CN 105062912A CN 201510424557 A CN201510424557 A CN 201510424557A CN 105062912 A CN105062912 A CN 105062912A
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Abstract
The invention discloses a phenolic wastewater treatment microbial inoculum as well as a preparation method and application thereof. The microbial inoculum is prepared from the following components in parts by weight: 8-13 parts of silicon dioxide, 10-15 parts of polyacrylamide, 3-5 parts of persulfate, 2-3 parts of sodium carbonate and 16-20 parts of compound microorganism; and the compound microorganism consists of trichococcus flocculiformis, bacillus licheniformis, candida lipolytica and paracoccus denitrificans at the volume ratio of 5: 3: 4: 3. The phenolic wastewater treatment microbial inoculum is applicable to phenolic wastewater treatment. The microbial inoculum disclosed by the invention can be used for solving a problem in treatment of toxic phenol by virtue of a microbiological method; and the treatment method has the advantages of being safe and reliable, economic and energy-saving, etc. The microbial inoculum disclosed by the invention, which is used for treating the phenolic wastewater, is prepared from trichococcus flocculiformis, without technical transformation in a large scale; and the microbial inoculum is relatively high in operability, conducive to the economic operation of water treatment and relatively high in practicability.
Description
Technical field
The present invention relates to a kind of microbial inoculum and preparation method thereof and application, be specifically related to a kind of phenolic waste water process microbial inoculum and preparation method thereof and utilize its Pyrogentisinic Acid to carry out the method processed.
Background technology
The waste water of discharging from factories such as coal gas, coking, petrochemical complex, oil refining, synthetic resins, synthon contains phenol pollutent mostly, phenol extensively exists in the industrial production, and along with improving constantly of China's industrialized level, the content of phenol in pollutent and ratio are all growing with each passing day.Phenol is as a kind of protoplasma poisonous substance, there is volatility and high bio-toxicity, can protein coagulating be made, eye, skin, respiratory tract are corrosive, Long Term Contact produces serious injury by central nervous system, liver, kidney, causes the various diseases such as dizziness, anaemia.Time in water containing phenol 0.002 ~ 0.015mg/l, chlorination can cause chlorophenol stench.After entering water body, serious harm HUMAN HEALTH and ecotope, even if the phenol of low levels is also enough to cause biological chronic poisoning, even interacting to produce with other pollutents acts synergistically.In addition, because phenol perviousness is strong, the pollution in wide area of underground water is often caused.
Current process phenol in wastewater mainly contains physico-chemical process and biological process, and physico-chemical process has By Electrocatalytic Oxidation, absorption method, photocatalytic oxidation and membrane processing method etc.These methods exist that floor space is large, operational condition is harsh and the problem such as treatment effect is undesirable.Biological degradation method have non-secondary pollution, cost low, run the advantages such as relatively simple, dominate always in the process of pollutent, but bacterial growth is slow, and it is easily outer with water outflow reactor and run off in a large number; In addition, phenol has serious toxic action to microorganism, and the degradation process of phenol is suppressed, and the approach be difficult to by controlling mud age is resolved, and seriously reduces treatment effect.
In research EGSB reactor process, in its anaerobic environment, find that one has Pyrogentisinic Acid insensitive, and there is the comparatively strong microorganism-cotton-shaped Shu Maoqiu bacterium adapted to, can be used for processing phenol.
Summary of the invention
The object of the invention is to apply the cotton-shaped Shu Maoqiu bacterium process phenol found, solve the reluctant problem of phenol, and then a kind of phenolic waste water process microbial inoculum and preparation method thereof and application are provided.The present invention is a kind of method that biological degradation method provides process phenol newly, and the process that can be industrial phenolic waste water provides effective support.
The object of the invention is to be achieved through the following technical solutions:
A kind of phenolic waste water process microbial inoculum, by weight, comprises following composition: silicon-dioxide 8-13 part, polyacrylamide 10-15 part, persulphate 3-5 part, sodium carbonate 2-3 part, complex microorganism 16-20 part.Wherein, described complex microorganism comprises cotton-shaped Shu Maoqiu bacterium, Bacillus licheniformis, Candida lipolytica, Paracoccus denitrificans, and its volume ratio is: cotton-shaped Shu Maoqiu bacterium: Bacillus licheniformis: Candida lipolytica: Paracoccus denitrificans=5:3:4:3.
A preparation method for above-mentioned phenolic waste water process microbial inoculum, comprises the steps:
One, the domestication of cotton-shaped Shu Maoqiu bacterium and cultivation
(1) should control water temperature in advance before the water inlet of EGSB reactor is 35 ± 0.2 DEG C, and adjust ph is 6.8 ~ 7.2;
(2) in EGSB reactor, inoculate the granule sludge in the anaerobic reactor of planting containing cotton-shaped Shu Maoqiu bacterium (TTrichococcusflocculiformis), require that seed sludge concentration is not less than 45g/L, the volume after it is standing accounts for more than 1/3 of reactor volume;
(3) intake based on the reactor water quality running this mud at first, domestication influent concentration is advisable with 1500 ~ 3000mg/L, then according to water outlet COD and aerogenesis situation, volume ratio by 3 ~ 8% after per stage is stable progressively increases phenolic waste water amount, require that COD processing rate is at least stabilized in more than 50%, gas production rate increases or at least requires not reduce, by this operation until enter phenolic waste water completely;
(4) the bacterium liquid that to extract with cotton-shaped Shu Maoqiu bacterium from the mud that above-mentioned reactor is tamed be dominant bacteria.
Two, Bacillus licheniformis, Candida lipolytica and Paracoccus denitrificans carry out respectively in the medium activating, enlarged culturing;
Three, the strain inoculation after enlarged culturing is in mixed strains substratum, and mixed culture temperature 25-30 DEG C, 36 ~ 42 hours time, obtains composite bacteria liquid;
Four, composite bacteria liquid obtains complex microorganism by centrifugation drying;
Five, complex microorganism is mixed with silicon-dioxide, polyacrylamide, persulphate, sodium carbonate, obtain cotton-shaped Shu Maoqiu bacteria agent.
In step 2, described substratum is: peptone 1.5%, yeast extract paste 1%, glucose 0.5%, NH
4cl
20.5%, K
2hPO
40.5%, surplus is water, and substratum was through 121 DEG C, 20 minutes high-temperature sterilizations.
In step 3, mixed strains substratum is: peptone 1.5%, yeast extract paste 1%, glucose 0.5%, NH
4cl
20.5%, surplus is water, and substratum was through 121 DEG C, 20 minutes high-temperature sterilizations.
Above-mentioned phenolic waste water process microbial inoculum can be used for processing phenolic waste water, and concrete steps are as follows:
35 ± 2 DEG C, pH value is 6.8 ~ 7.2, under the condition of volumetric loading 3.0 ~ 5.0kg/ (m3d), being put into by cotton-shaped Shu Maoqiu bacteria agent into water phenol concentration is in the EGSB reactor of 100 ~ 140mg/L, and every 40 ~ 50kg water throws in the cotton-shaped Shu Maoqiu bacteria agent of 1 ~ 1.2kg.
The present invention's microbial inoculum used is with cotton-shaped Shu Maoqiu bacterium (Trichococcusflocculiformis) for dominant bacteria, and its characteristic is: Shu Maoqiu Pseudomonas; A kind of thread fungus; Cell is spherical to oval, 1.0 ~ 1.5 μm × 1.0 ~ 2.5 μm; The long-chain of 50 ~ 200 cells; Many joint knots are often demonstrated in liquid medium within; Gram-positive, does not move, spore of not sprouting; Formed cotton-shaped in liquid medium within; Solid culture has bending chain; Amphimicrobian; Chemoheterotrophy, fermented type, poor growth; Produce acid from various carbohydrate, catalase is positive, oxidase negative, and indoles is negative, does not reduce nitrate, and MR is positive, optimum temperuture 25 ~ 30 DEG C.
The present invention has following beneficial effect:
1, the invention solves the problem be difficult to because phenol is toxic with microbial method process phenol, this treatment process has the advantages such as safe and reliable, economical and energy saving.
2, the present invention proposes method that is feasible, effective microbial inoculum process phenolic waste water, the research and apply for microbiobacterial agent provides important reference frame and scientific guidance.
3, the present invention processes phenolic waste water by cotton-shaped Shu Maoqiu bacterium is made microbial inoculum, does not need to carry out large-scale technological transformation, has higher operability, be conducive to the economical operation of water treatment, have higher practicality.
Embodiment
Below technical scheme of the present invention is further described, but is not limited thereto, everyly technical solution of the present invention is modified or equivalent to replace, and do not depart from the spirit and scope of technical solution of the present invention, all should be encompassed in protection scope of the present invention.
Embodiment one: the preparation method that present embodiments provide for a kind of phenolic waste water process microbial inoculum, concrete steps are as follows:
One, the choosing of granule sludge
Seed sludge adopts the granule sludge processed under 35 ± 2 DEG C of conditions in the anaerobic reactor of planting containing cotton-shaped Shu Maoqiu bacterium (TTrichococcusflocculiformis) of alcohol waste water etc., require that this reactor is stable, the integrity factor of granule sludge average mechanical strength reaches more than 30%, average sinking rate is greater than 30mm/s, and particle diameter is selected between 1.0 ~ 2.5mm.
Two, the domestication of dominant bacteria and cultivation
In EGSB reactor, inoculation has the granule sludge of above-mentioned sex character, requires that seed sludge concentration is not less than 45g/L, and the volume after it is standing accounts for more than 1/3 of reactor volume; Should control water temperature in advance before reactor water inlet is 35 ± 0.2 DEG C, and adjust ph is 6.8 ~ 7.2.
For the toxicity preventing anaerobic grain sludge microorganism to be not suitable with wastewater containing phenol, initial water inlet should to run the reactor water quality of this mud, and domestication influent concentration is advisable with 1500 ~ 3000mg/L, and the volume ratio by 5% progressively increases phenolic waste water amount.According to water outlet COD and aerogenesis situation, per stage stablize after consider again to increase the amount of phenolic wastewater, require that COD processing rate is at least stabilized in more than 50%, gas production rate increases or at least requires not reduce, by this operation until enter phenolic waste water completely.
The flooding velocity of domestication initial reaction device is unsuitable excessive, ensures that COD volumetric loading is at 4.5kg/ (m
3d) left and right, upflow velocity is about 2.0m/h; Later stage, namely COD clearance was stabilized in more than 50% along with the improvement of mud state, under the state that gas production rate increases, progressively could improve volumetric loading, but also not should exceed 7kg/ (m
3d).
Three, the making of microbial inoculum
To extract with cotton-shaped Shu Maoqiu bacterium from the mud that above-mentioned reactor is tamed be dominant bacteria, and bacterium liquid makes phenolic waste water process microbial inoculum, by weight being prepared from by following composition: silicon-dioxide 8 parts, polyacrylamide 10 parts, persulphate 4 parts, 2 parts, sodium carbonate, complex microorganism 20 parts.Wherein, complex microorganism comprises cotton-shaped Shu Maoqiu bacterium, Bacillus licheniformis, Candida lipolytica, Paracoccus denitrificans.
Making method is as follows:
(1) Bacillus licheniformis, Candida lipolytica and Paracoccus denitrificans carry out respectively activating, enlarged culturing;
Substratum is: peptone 1.5%, yeast extract paste 1%, glucose 0.5%, NH
4cl
20.5%, K
2hPO
40.5%, surplus is water, and substratum was through 121 DEG C, 20 minutes high-temperature sterilizations.
(2) bacterial classification after enlarged culturing is inoculated in mixed strains substratum with following percent by volume: cotton-shaped Shu Maoqiu bacterium 5%, Bacillus licheniformis 3%, Candida lipolytica 4%, Paracoccus denitrificans 3%.Mixed culture temperature 28 DEG C, 36 hours time, obtains composite bacteria liquid; Mixed strains substratum is: peptone 1.5%, yeast extract paste 1%, glucose 0.5%, NH
4cl
20.5%, surplus is water, and substratum was through 121 DEG C, 20 minutes high-temperature sterilizations.
(3) composite bacteria liquid obtains complex microorganism by centrifugation drying.
(4) complex microorganism mixes with silicon-dioxide, polyacrylamide, obtains phenolic waste water treatment agent.
Embodiment two: present embodiments provide for a kind of method utilizing phenolic waste water process microbial inoculum process phenolic waste water, concrete steps are as follows:
35 ± 2 DEG C, pH value is 6.8 ~ 7.2, under the condition of volumetric loading 3.0 ~ 5.0kg/ (m3d), it is in the EGSB reactor of 120mg/L that cotton-shaped Shu Maoqiu bacteria agent embodiment one prepared is put into into water phenol concentration, and every 40kg water throws in the cotton-shaped Shu Maoqiu bacteria agent of 1kg.After debugging, outlet phenol concentration is down to 25 ~ 30mg/L, and processing rate reaches more than 75%.
Embodiment three: present embodiment and embodiment one unlike, described phenolic waste water process microbial inoculum, by weight, following composition is comprised: silica 10 part, polyacrylamide 13 parts, persulphate 3 parts, 3 parts, sodium carbonate, complex microorganism 18 parts.
Claims (7)
1. a phenolic waste water process microbial inoculum, it is characterized in that described microbial inoculum by weight, be made up of following composition: silicon-dioxide 8-13 part, polyacrylamide 10-15 part, persulphate 3-5 part, sodium carbonate 2-3 part, complex microorganism 16-20 part, described complex microorganism comprises cotton-shaped Shu Maoqiu bacterium, Bacillus licheniformis, Candida lipolytica, Paracoccus denitrificans, and its volume ratio is: cotton-shaped Shu Maoqiu bacterium: Bacillus licheniformis: Candida lipolytica: Paracoccus denitrificans=5:3:4:3.
2. a preparation method for phenolic waste water process microbial inoculum according to claim 1, is characterized in that described method steps is as follows:
One, the domestication of cotton-shaped Shu Maoqiu bacterium and cultivation
(1) before the water inlet of EGSB reactor, controlling water temperature in advance is 35 ± 0.2 DEG C, and adjust ph is 6.8 ~ 7.2;
(2) in EGSB reactor, inoculation contains the granule sludge in the anaerobic reactor of cotton-shaped Shu Maoqiu bacterial classification;
(3) intake based on the reactor water quality running this mud at first, domestication influent concentration is advisable with 1500 ~ 3000mg/L, then according to water outlet COD and aerogenesis situation, volume ratio by 3 ~ 8% after per stage is stable progressively increases phenolic waste water amount, require that COD processing rate is at least stabilized in more than 50%, gas production rate increases or at least requires not reduce, by this operation until enter phenolic waste water completely;
(4) the bacterium liquid that to extract with cotton-shaped Shu Maoqiu bacterium from the mud that above-mentioned reactor is tamed be dominant bacteria;
Two, Bacillus licheniformis, Candida lipolytica and Paracoccus denitrificans carry out respectively in the medium activating, enlarged culturing;
Three, the strain inoculation after cultivating is in mixed strains substratum, and mixed culture temperature 25-30 DEG C, 36 ~ 42 hours time, obtains composite bacteria liquid;
Four, composite bacteria liquid obtains complex microorganism by centrifugation drying;
Five, complex microorganism is mixed with silicon-dioxide, polyacrylamide, persulphate, sodium carbonate, obtain cotton-shaped Shu Maoqiu bacteria agent.
3. the preparation method of phenolic waste water process microbial inoculum according to claim 2, is characterized in that, in described step one, seed sludge concentration is not less than 45g/L, and the volume after it is standing accounts for more than 1/3 of reactor volume.
4. the preparation method of phenolic waste water process microbial inoculum according to claim 2, is characterized in that, in described step 2, substratum is: peptone 1.5%, yeast extract paste 1%, glucose 0.5%, NH
4cl
20.5%, K
2hPO
40.5%, surplus is water, and substratum was through 121 DEG C, 20 minutes high-temperature sterilizations.
5. the preparation method of phenolic waste water process microbial inoculum according to claim 2, is characterized in that, in described step 3, mixed strains substratum is: peptone 1.5%, yeast extract paste 1%, glucose 0.5%, NH
4cl
20.5%, surplus is water, and substratum was through 121 DEG C, 20 minutes high-temperature sterilizations.
6. the application of phenolic waste water process microbial inoculum according to claim 1 in process phenolic waste water.
7. the application of phenolic waste water process microbial inoculum according to claim 6 in process phenolic waste water, is characterized in that described treatment step is as follows:
35 ± 2 DEG C, pH value is 6.8 ~ 7.2, under the condition of volumetric loading 3.0 ~ 5.0kg/ (m3d), being put into by cotton-shaped Shu Maoqiu bacteria agent into water phenol concentration is in the EGSB reactor of 100 ~ 140mg/L, and every 40 ~ 50kg water throws in the cotton-shaped Shu Maoqiu bacteria agent of 1 ~ 1.2kg.
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| CN106630419A (en) * | 2016-12-20 | 2017-05-10 | 江苏绿尚环保科技有限公司 | Urban comprehensive sewage treatment process |
| CN109626601A (en) * | 2019-02-20 | 2019-04-16 | 何美英 | A kind of complex microorganism water purification agent and its preparation method and application |
| CN111925969A (en) * | 2020-09-07 | 2020-11-13 | 福泉环保城发展有限公司 | Water treatment microbial inoculum |
| CN114084965A (en) * | 2020-08-24 | 2022-02-25 | 中国石油化工股份有限公司 | Oil refining wastewater biological treatment agent and use method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105540869A (en) * | 2015-12-17 | 2016-05-04 | 苏州大学 | Paracoccus-denitrificans-loaded modified graphene oxide composite material and preparation method and use thereof |
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| CN109626601A (en) * | 2019-02-20 | 2019-04-16 | 何美英 | A kind of complex microorganism water purification agent and its preparation method and application |
| CN114084965A (en) * | 2020-08-24 | 2022-02-25 | 中国石油化工股份有限公司 | Oil refining wastewater biological treatment agent and use method thereof |
| CN114084965B (en) * | 2020-08-24 | 2023-01-03 | 中国石油化工股份有限公司 | Oil refining wastewater biological treatment agent and use method thereof |
| CN111925969A (en) * | 2020-09-07 | 2020-11-13 | 福泉环保城发展有限公司 | Water treatment microbial inoculum |
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Application publication date: 20151118 |