CN109680012A - A method of enhancing excess sludge anaerobic fermentation generates hydrogen - Google Patents
A method of enhancing excess sludge anaerobic fermentation generates hydrogen Download PDFInfo
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- CN109680012A CN109680012A CN201910003793.5A CN201910003793A CN109680012A CN 109680012 A CN109680012 A CN 109680012A CN 201910003793 A CN201910003793 A CN 201910003793A CN 109680012 A CN109680012 A CN 109680012A
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P3/00—Preparation of elements or inorganic compounds except carbon dioxide
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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Abstract
The present invention relates to one kind so that the method that a kind of fermentation of potassium permanganate (typical oxidant) Lai Tigao sludge anaerobic generates hydrogen is added.The primary sludge and excess sludge that specific method, which includes: (1), generates municipal sewage plant are handled through natural subsidence, and removal supernatant is concentrated, and fermentation raw material is obtained；(2) potassium permanganate is added in fermentation raw material obtained above, is handled under anaerobic, generate hydrogen.Sludge not only promotes the broken born of the same parents of sludge, dissolves out the organic matters such as protein, sugar largely, and serious limit the activity of the microorganisms such as thermophilic producing hydrogen and methane after potassium permanganate processing, it is thus possible to greatly facilitate the amount that sludge generates hydrogen.It by simple, cheap efficient operation, realizes sludge reduction and a step promotes the resource utilization of sludge, have great importance to the processing disposition of sludge.
Description
Technical field
The invention belongs to environmental protection and Treatment of Sludge resource technology fields, and in particular to one kind is to be added permanganic acid
The method that a kind of fermentation of potassium (typical oxidant) Lai Tigao sludge anaerobic generates hydrogen.
Technical background
Currently, the quantity rapid growth of China's urban wastewater treatment firm, along with a large amount of primary sludges and excess sludge
It generates.Due to containing various pollutants in the sewage of town dweller's life discharge, dirt is entered by city planting ductwork
Water treatment plant, these pollutants can not be largely attached in the sludge of concentration by the microbial degradation in sludge.If dirty
Mud processing and disposition are inappropriate, it will cause sludge and underground water, surface water etc. to contact, contain in excess sludge wadding body a large amount of
Other poisonous and hazardous substances such as virus, heavy metal, the difficult substance being degraded by microorganisms will enter underground water and surface water
In, serious polluted underground water and surface water, and then significant damage is brought to human health.Further, since processing and the place of sludge
The expense of setting accounts for 60% or more of entire sewage treatment plant's totle drilling cost, and the activated sludge of rapid growth has become sewage treatment plant
One of important challenge.
The organic matters such as a large amount of protein, sugar are enriched in excess sludge.It is recycling sludge that anaerobic fermentation, which handles sludge,
A kind of common methods utilized, but anaerobic fermentation before this, digestion are concentrated mainly on the generation of methane, short chain fatty acids, and it is right
Rarely have in production hydrogen and is related to.And due to current global warming aggravation and energy shortage, force people to find a kind of clean energy
Source.Hydrogen worldwide earns widespread respect as a kind of non-polluting renewable and with the ideal fuels of high heating value.
It is fermented using sludge anaerobic and generates hydrogen, reaction condition is mild, has and taps a new source of energy, saves energy consumption and environment purification
Significance not only solves the processing problem of sludge, and generates a large amount of valuable clean energy resource-hydrogen.
Sludge anaerobic fermentation is divided into six stages, i.e. dissolution, hydrolysis, acidification, acetoxylation, homoacetogenesis and methanation
Stage.Hydrogen is one of anaerobic digestion mesostate, is mainly produced during the acidification of anaerobic fermentation, acetoxylation
It is raw, by the consumption hydrogen bacteria consumption such as thermophilic hydrogen methane backeria, sulfate reducing bacteria in homoacetogenesis and methanation.Therefore, increase
Sludge is added to dissolve out, providing more substrates for hydrogen-producing bacteria and inhibiting the activity of consumption hydrogen bacteria is to improve Effecting Hydrogen Production from Anaerobic Fermentation of Excess Sewage Sludge
Key.The study found that the dissolution of sludge can be significantly improved by pretreatments such as ultrasound, heating, microwaves, the production of hydrogen is improved
Amount, but these preprocessing means are complicated for operation, energy consumption is big and be easy to cause secondary pollution, make its application by very big
Limitation, therefore, a kind of method for finding cheap and efficient Effecting Hydrogen Production from Anaerobic Fermentation of Excess Sewage Sludge easy to operate, safe become the heat of research
Door.
Potassium permanganate is a kind of strong oxidizer, is widely used in disinfection, deodorization, the growth for inhibiting algae of water etc..Together
When in fields such as medicine, chemical industry also have use, particularly, potassium permanganate can effectively promote sludge as a kind of oxidant
Being crushed for cell, increases the release of organic matter, in addition, potassium permanganate can significantly inhibit to consume hydrogen bacteria, thus significantly
It improves sludge anaerobic fermentation and generates hydrogen, however, up to the present, improving grinding for Effecting Hydrogen Production from Anaerobic Fermentation of Excess Sewage Sludge using potassium permanganate
Study carefully and is reported not yet.
Summary of the invention
The purpose of the present invention is to provide a kind of methods that the fermentation of raising sludge anaerobic generates hydrogen, that is, add potassium permanganate
Promote Effecting Hydrogen Production from Anaerobic Fermentation of Excess Sewage Sludge.
In order to achieve the above object, the solution of the present invention are as follows:
A method of using potassium permanganate reinforcement sludge hydrogen production through anaerobic fermentation, include the following steps:
(1) primary sludge to municipal sewage plant and excess sludge carry out natural subsidence, and the rear supernatant that removes carries out
Concentration, obtains fermentation raw material
(2) above-mentioned sludge and potassium permanganate mixed processing are fermented under anaerobic environment and generates hydrogen.
The sludge settling time is that for 24 hours, temperature is 4 DEG C in above-mentioned steps (1).
In above-mentioned steps (2), the dosage of potassium permanganate is 0.025~0.2g/g TSS, preferably 0.05~0.1g/g
TSS。
In above-mentioned steps (2), yeasting is anaerobic environment, i.e., nitrogen is passed through into the sludge added with potassium permanganate
Reactor is put into 35 DEG C after sealing, concussion speed is 120rpm/ until not having the presence of oxygen in reactor by 5min
In the shaking table of min.
In above-mentioned steps (2), the time of sludge anaerobic fermentation is 10-14d.
In a preferred case study on implementation, potassium permanganate dosage is 0.05~0.1g/g TSS.Although potassium permanganate
Dosage can promote sludge anaerobic fermentation to generate hydrogen in a certain range, and in a certain range, as potassium permanganate is used
The increase of amount is more obvious the facilitation effect of Effecting Hydrogen Production from Anaerobic Fermentation of Excess Sewage Sludge.It is contemplated that the pass of cost of material and hydrogen output
System, the amount ranges for the comparatively ideal potassium permanganate that the present invention uses are in 0.025~0.1g/g TSS.
Due to the technical solution more than using, the present invention has following achievement:
1. the present invention promotes Effecting Hydrogen Production from Anaerobic Fermentation of Excess Sewage Sludge using potassium permanganate, it can significantly be crushed sludge cell,
The organic substances such as the protein in sludge, sugar are released, to provide more sufficient substrate to produce hydrogen microorganism, improves and produces
The rate of hydrogen reduces the loss of hydrogen, increases the accumulation of hydrogen, to realization in addition, potassium permanganate is able to suppress consumption hydrogen microorganism
The minimizing of sludge and recycling have great importance.
2. the hydrogen that the present invention generates be it is a kind of cleaning, the sustainable energy with high heating value, can effectively alleviate energy
The situation of source shortage and global warming generates the product of this high added value of hydrogen using this waste of sludge, both effectively
Reduce environmental pollution, and therefrom recycles the clean energy.
Detailed description of the invention
Fig. 1 is process flow chart of the invention
Specific embodiment
Below in conjunction with specific real case, the present invention will be further described, but is not intended to limit protection model of the invention
It encloses.
Case study on implementation 1
(1) in the plexiglass box that working volume is 4L, the sludge that municipal sewage plant generates is placed at 4 DEG C
Natural subsidence 1d removes the raw material to be fermented after supernatant.
(2) sludge obtained in 500mL (1) is added in reactor, and adds the potassium permanganate of 0.05g/g TSS, stirred
It mixes uniformly.It is filled with nitrogen into reactor, continues 5min to remove oxygen, sealing reactor is put into shaking table and carries out anaerobic fermentation,
Wherein, shaker fermentation temperature is 35 ± 1 DEG C, and concussion speed is 120rpm/min, fermentation time (i.e. sludge stopping in the reactor
Stay the time) it is 6d, the yield of hydrogen is 3.34mL/g VSS.
Case study on implementation 2
(1) in the plexiglass box that working volume is 4L, the sludge that municipal sewage plant generates is placed at 4 DEG C
Natural subsidence 1d removes the raw material to be fermented after supernatant.
(2) sludge obtained in 500mL (1) is added in reactor, and adds the potassium permanganate of 0.05g/g TSS, stirred
It mixes uniformly,.It is filled with nitrogen into reactor, continues 5min to remove oxygen, sealing reactor is put into shaking table and carries out anaerobic fermentation,
Wherein, shaker fermentation temperature is 35 ± 1 DEG C, and concussion speed is 120rpm/min, fermentation time (i.e. sludge stopping in the reactor
Stay the time) it is 10d, the yield of hydrogen is 4.35mL/g VSS.
Case study on implementation 3
(1) in the plexiglass box that working volume is 4L, the sludge that municipal sewage plant generates is placed at 4 DEG C
Natural subsidence 1d removes the raw material to be fermented after supernatant.
(2) sludge obtained in 500mL (1) is added in reactor, and adds the potassium permanganate of 0.1g/g TSS, stirred
Uniformly,.It is filled with nitrogen into reactor, continues 5min to remove oxygen, sealing reactor is put into shaking table and carries out anaerobic fermentation,
In, shaker fermentation temperature is 35 ± 1 DEG C, and concussion speed is 120rpm/min, fermentation time (the i.e. stop of sludge in the reactor
Time) it is 6d, the yield of hydrogen is 4.06mL/g VSS.
Case study on implementation 4
(1) in the plexiglass box that working volume is 4L, the sludge that municipal sewage plant generates is placed at 4 DEG C
Natural subsidence 1d removes the raw material to be fermented after supernatant.
(2) sludge obtained in 500mL (1) is added in reactor, and adds the potassium permanganate of 0.1g/g TSS, stirred
Uniformly.It is filled with nitrogen into reactor, continues 5min to remove oxygen, sealing reactor is put into shaking table and carries out anaerobic fermentation,
In, shaker fermentation temperature is 35 ± 1 DEG C, and concussion speed is 120rpm/min, fermentation time (the i.e. stop of sludge in the reactor
Time) it is 10d, the yield of hydrogen is 5.01mL/g VSS.
Comparative example 1
(1) sludge that municipal sewage plant generates is placed on 4 in the plexiglass box that working volume is 4L by (1)
Natural subsidence 1d at DEG C removes the raw material to be fermented after supernatant.
(2) sludge obtained in 500mL (1) is added in reactor, does not add potassium permanganate, stirs evenly.Toward reaction
It is filled with nitrogen in device, continues 5min to remove oxygen, sealing reactor is put into shaking table and carries out anaerobic fermentation, wherein shaker fermentation
Temperature is 35 ± 1 DEG C, and concussion speed is 120rpm/min, and fermentation time (i.e. the residence time of sludge in the reactor) is 10d,
The yield of hydrogen is 0.64mL/g VSS.
Case study on implementation and the hydrogen output of comparative example are as shown in table 1:
The fermentation comparison sheet of 1 embodiment of table and comparative example
As can be seen from the table, the hydrogen output of embodiment 1 to embodiment 4 has very big than the hydrogen output of comparative example 1
Raising, especially, the hydrogen output of the embodiment 4 under optimal conditions improves maximum than the hydrogen output of comparative example 1.
The above-mentioned description to embodiment is that this hair can be understood and used for the ease of those skilled in the art
It is bright.Although the present invention is disclosed as above with preferred embodiment, however, it is not intended to limit the invention.It is of the invention not departing from
In the case where Spirit Essence and technical solution, person skilled in the art can make many to technical solution of the present invention can
The modification or equivalent example modified to equivalent change of energy.Therefore, it is all do not depart from scope do it is any simple
Improvement and modification all should be within protection scope of the present invention.
Claims (7)
1. a kind of method that enhancing excess sludge anaerobic fermentation generates hydrogen, which is characterized in that mainly comprise the steps of:
The activated sludge for taking municipal sewage plant to generate carries out concentration and is detested after natural subsidence removes supernatant
Obtained sludge is mixed with potassium permanganate, is fermented under anaerobic environment by aerobe fermentation raw material, generates hydrogen.
2. a kind of method that enhancing excess sludge anaerobic fermentation generates hydrogen according to claim 1, it is characterised in that: institute
Stating sludge is the activated sludge that municipal wastewater treatment plant generates, and dwell temperature is 4 DEG C, and the sedimentation time is 1 day.
3. a kind of method that enhancing excess sludge anaerobic fermentation generates hydrogen according to claim 1, it is characterised in that: institute
The dosage that adds of the SDBS stated is 0.025~0.2g/g TSS, preferably 0.05~0.1g/g TSS.
4. a kind of method that enhancing excess sludge anaerobic fermentation generates hydrogen according to claim 1, it is characterised in that: to
Exist by being passed through nitrogen 5min no oxygen into reactor in pretreated sludge, entire yeasting remains anaerobism.
5. a kind of method that enhancing excess sludge anaerobic fermentation generates hydrogen according to claim 1, it is characterised in that: institute
The anaerobic fermentation temperature stated is 35 ± 1 DEG C.
6. a kind of method that enhancing excess sludge anaerobic fermentation generates hydrogen according to claim 1, it is characterised in that: institute
The concussion speed stated is 120rpm/min.
7. a kind of method that enhancing excess sludge anaerobic fermentation generates hydrogen according to claim 1, it is characterised in that: institute
The time for stating sludge fermentation is 10~14d.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110204161A (en) * | 2019-05-30 | 2019-09-06 | 湖南大学 | A method of sludge, which is improved, using neopelex (SDBS) generates hydrogen |
| CN110204159A (en) * | 2019-05-30 | 2019-09-06 | 湖南大学 | A kind of method of refractory organics substance in removal sludge |
| CN110204160A (en) * | 2019-05-30 | 2019-09-06 | 湖南大学 | A method of inhibit sludge anaerobic fermentation to generate hydrogen sulfide |
| CN111518843A (en) * | 2020-04-30 | 2020-08-11 | 同济大学 | Anaerobic fermentation hydrogen production method and additive using excess sludge as raw material |
| CN113697949A (en) * | 2021-08-20 | 2021-11-26 | 中钢集团鞍山热能研究院有限公司 | Short-flow anaerobic reactor device and high-concentration organic wastewater pretreatment method |
| CN115385534A (en) * | 2022-09-05 | 2022-11-25 | 同济大学 | Method for enhancing hydrogen production by anaerobic fermentation of excess sludge by using cation exchange resin |
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| CN105399291A (en) * | 2015-12-11 | 2016-03-16 | 清华大学 | Disintegration method for excess sludge and application of disintegrated sludge in hydrogen production through fermentation |
| CN108624623A (en) * | 2018-06-13 | 2018-10-09 | 湖南大学 | A method of strengthening residual active sludge hydrogen production through anaerobic fermentation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110204161A (en) * | 2019-05-30 | 2019-09-06 | 湖南大学 | A method of sludge, which is improved, using neopelex (SDBS) generates hydrogen |
| CN110204159A (en) * | 2019-05-30 | 2019-09-06 | 湖南大学 | A kind of method of refractory organics substance in removal sludge |
| CN110204160A (en) * | 2019-05-30 | 2019-09-06 | 湖南大学 | A method of inhibit sludge anaerobic fermentation to generate hydrogen sulfide |
| CN111518843A (en) * | 2020-04-30 | 2020-08-11 | 同济大学 | Anaerobic fermentation hydrogen production method and additive using excess sludge as raw material |
| CN113697949A (en) * | 2021-08-20 | 2021-11-26 | 中钢集团鞍山热能研究院有限公司 | Short-flow anaerobic reactor device and high-concentration organic wastewater pretreatment method |
| CN113697949B (en) * | 2021-08-20 | 2023-03-10 | 中钢集团鞍山热能研究院有限公司 | Short-process anaerobic reactor device and high-concentration organic wastewater pretreatment method |
| CN115385534A (en) * | 2022-09-05 | 2022-11-25 | 同济大学 | Method for enhancing hydrogen production by anaerobic fermentation of excess sludge by using cation exchange resin |
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Application publication date: 20190426 |