CN105800781B - A kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water - Google Patents
A kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water Download PDFInfo
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- CN105800781B CN105800781B CN201610377586.2A CN201610377586A CN105800781B CN 105800781 B CN105800781 B CN 105800781B CN 201610377586 A CN201610377586 A CN 201610377586A CN 105800781 B CN105800781 B CN 105800781B
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- cassava alcohol
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- 239000002351 wastewater Substances 0.000 title claims abstract description 55
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000010439 graphite Substances 0.000 title claims abstract description 50
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 50
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 title claims abstract description 25
- 238000011049 filling Methods 0.000 title claims abstract description 15
- 241000658379 Manihot esculenta subsp. esculenta Species 0.000 title 1
- 240000003183 Manihot esculenta Species 0.000 claims abstract description 43
- 239000010802 sludge Substances 0.000 claims abstract description 43
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 230000006641 stabilisation Effects 0.000 claims description 7
- 238000011105 stabilization Methods 0.000 claims description 7
- 238000011068 loading method Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 5
- 239000008103 glucose Substances 0.000 claims description 5
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 4
- 239000012895 dilution Substances 0.000 claims description 4
- 229930195729 fatty acid Natural products 0.000 claims description 4
- 239000000194 fatty acid Substances 0.000 claims description 4
- 150000004665 fatty acids Chemical class 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims description 3
- 239000001632 sodium acetate Substances 0.000 claims description 3
- 235000017281 sodium acetate Nutrition 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 3
- MFBOGIVSZKQAPD-UHFFFAOYSA-M sodium butyrate Chemical compound [Na+].CCCC([O-])=O MFBOGIVSZKQAPD-UHFFFAOYSA-M 0.000 claims description 3
- 239000002054 inoculum Substances 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 235000019260 propionic acid Nutrition 0.000 claims 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 230000008569 process Effects 0.000 description 11
- 239000010865 sewage Substances 0.000 description 10
- 230000002572 peristaltic effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002921 fermentation waste Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 235000013379 molasses Nutrition 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000027756 respiratory electron transport chain Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 235000010413 sodium alginate Nutrition 0.000 description 2
- 239000000661 sodium alginate Substances 0.000 description 2
- 229940005550 sodium alginate Drugs 0.000 description 2
- JXKPEJDQGNYQSM-UHFFFAOYSA-M sodium propionate Chemical compound [Na+].CCC([O-])=O JXKPEJDQGNYQSM-UHFFFAOYSA-M 0.000 description 2
- 239000004324 sodium propionate Substances 0.000 description 2
- 235000010334 sodium propionate Nutrition 0.000 description 2
- 229960003212 sodium propionate Drugs 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- KIPLYOUQVMMOHB-MXWBXKMOSA-L [Ca++].CN(C)[C@H]1[C@@H]2[C@@H](O)[C@H]3C(=C([O-])[C@]2(O)C(=O)C(C(N)=O)=C1O)C(=O)c1c(O)cccc1[C@@]3(C)O.CN(C)[C@H]1[C@@H]2[C@@H](O)[C@H]3C(=C([O-])[C@]2(O)C(=O)C(C(N)=O)=C1O)C(=O)c1c(O)cccc1[C@@]3(C)O Chemical compound [Ca++].CN(C)[C@H]1[C@@H]2[C@@H](O)[C@H]3C(=C([O-])[C@]2(O)C(=O)C(C(N)=O)=C1O)C(=O)c1c(O)cccc1[C@@]3(C)O.CN(C)[C@H]1[C@@H]2[C@@H](O)[C@H]3C(=C([O-])[C@]2(O)C(=O)C(C(N)=O)=C1O)C(=O)c1c(O)cccc1[C@@]3(C)O KIPLYOUQVMMOHB-MXWBXKMOSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229940063650 terramycin Drugs 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
- C02F2103/325—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters from processes relating to the production of wine products
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses the methods that a kind of graphite felt materials filling anaerobic reactor handles cassava alcohol waste water, and graphite felt materials are filled in anaerobic reactor and are used as sludge carrier, the volume of graphite felt materials accounts for the 30 ~ 45% of reactor working volume；Anaerobic sludge is seeded on graphite felt carrier, stationary culture, anaerobic sludge is made to be adsorbed on graphite felt carrier；Load is carried out to anaerobic sludge and improves domestication culture, diluted cassava alcohol waste water is introduced into reactor and flows back step by step for use, and the sludge of immobilization is made to be come into full contact with cassava alcohol waste water, is stablized with COD removal rates, methane production and is considered as domestication and terminates；Pending cassava alcohol waste water is entered in anaerobic reactor and is handled, hydraulic detention time is 0.3 ~ 0.5 h, and this method COD removal rates can be up to 95% or more, and the cycle of operation is shorter and occupies little space and can save economic cost.
Description
Technical field
The present invention relates to a kind of cassava alcohol wastewater treatment method, more particularly to a kind of graphite felt materials fill anaerobic reaction
The method that device handles cassava alcohol waste water.
Background technology
Cassava has the characteristics that yield is big, content of starch is high and drought-enduring, impoverishment tolerant, plantation saving of labor, small investment.It is with cassava
Raw material production alcohol has more wide market in China, and the 1/3 of China's alcohol output is using cassava as raw material.Conventional production
1t cassava alcohols are often produced in technique and about generate 7~15t waste water, and such waste water contains a large amount of organic compound and suspension
Object belongs to high-concentration acid organic wastewater.In recent years, country is increasingly heavier to the improvement for seriously polluting the alcohol waste lees solution of environment
It regards, it is specified that alcohol industry waste liquid allows the secondary standard of the COD of discharge as≤300 mg/L, primary standard is≤100 mg/L.
Mainly there are physical-chemical process and biological treatment two major classes for the processing method of this kind of high concentrated organic wastewater.Object
Physicochemical facture mainly has photochemistry Coagulation Method, oxidation-absorption method, burning method etc., but this method only by organic matter from
It is shifted in waste water, it is also necessary to consider subsequent processing, cannot achieve the effect that treating both manifestation and root cause of disease.Biological treatment is because of its economy
Numerous technique for treating industrial wastewater are favored, and common biological treatment can be divided into aerobic method, anaerobic process and fall between
Hydrolysis acidification method three categories.
For aerobe method since its is easy to operate, the features such as outlet effect is good, is generally used for processing low-concentration organic waste water,
But there are energy consumption issues, this problems to be the largest drawback, increasingly be valued by people for Aerobic Process for Treatment.
Anaerobic biotreatment method is using facultative anaerobic bacteria and obligate anaerobe come a kind of life of organic matter in water body of degrading
Object facture.Compared with Aerobic Process for Treatment, anaerobic process usually has the following advantages in terms of handling high concentrated organic wastewater：(1) it remains
Remaining sludge yield is few；(2) biological sludge generated is easy to be dehydrated；(3) need nutrition few；(4) it is not required to be aerated required energy；
(5) methane is a kind of useful final product as product；(6) it can run at higher loads；(7) active anaerobic sludge energy
Preserve some months.
Currently, graphite felt materials are widely used as the cathode material of electrode, using cathode indirect oxidation ability, O is restored2It generates
H2O2Or, H2O2Or HO2It further decomposes and generates OH, H2O2、HO2All it is strong oxidizer with OH, to make cathode can be with
Organic pollution in indirect oxidation degradation water receives the favor of Many researchers.The graphite felt catalysis electricity of Li Guixia reports
Pole electro-chemical systems handle terramycin wastewater, and COD removal rates, which only reach, is unfavorable for cathode to organic under 50% or so and acid condition
The degradation of object is unfavorable for degradation of the anode to organic matter under alkaline condition, and application conditions range is restricted.It just must prosperous report
Benzoic acid in graphite felt cathode Electro-Fenton process degradation water, COD removal rates reach 89. 7% but the more complex need of experimental provision are continuous
It is passed through air to aeration opening, is affected by pH.
However graphite felt is less as fixed bed carrier, the present invention is using graphite felt as fixed bed carrier adsorption flora
Reactor is filled, the activated carbon fibre that COD removal rates grow pine report compared with woods makees fixed bed anaerobic reactor processing high concentration molasses
Waste water is high by about 10%, high by about 15% compared with the composite materials filling anaerobic reactor such as sodium alginate of Nie Qian reports, compared with item Yun report
UASB reactor for treatment high concentration food fermentation waste water is high by about 30%.
Invention content
The object of the present invention is to provide a kind of graphite felt materials to fill the method that anaerobic reactor handles cassava alcohol waste water,
Make the treatment of Organic Wastewater of high concentration more efficiently thoroughly, and this reactor volume is small, the period it is short can effectively reduce it is economical at
This.
To achieve the goals above, the technical solution adopted by the present invention is：
A kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water, includes the following steps：
1）Graphite felt materials are filled in anaerobic reactor and are used as sludge carrier, the volume of graphite felt materials accounts for reactor
The 30 ~ 45% of working volume；
2）Anaerobic sludge is seeded on graphite felt carrier, stationary culture, anaerobic sludge is made to be adsorbed on graphite felt carrier；
3）Domestication culture carried out to anaerobic sludge, diluted cassava alcohol waste water is introduced into reactor and flows back step by step for use,
The sludge and cassava alcohol waste water for making immobilization come into full contact with, and are considered as domestication with COD removal rates, methane production stabilization and are terminated；
4）Pending cassava alcohol waste water is entered in anaerobic reactor and is handled, COD removal rates reach 95% with
On, water outlet.
Processing procedure organic loading rate（OLR）It is 12.00 ~ 16.00kg COD/ (m3D), hydraulic detention time（HRT）
It is 0.3 ~ 0.5 h, COD removal rates reach 95% or more, and water outlet VFA is 6.17mM hereinafter, pH is 7.00 ~ 7.50, and methane production is
1680~1725 ml/d.Usual stable operation stage, at 4 ~ 6 days, detection water outlet COD's contained process cycle from inlet water to outlet water
Amount, COD removal rates reach 95% or more.Process cycle is short.
Step 1）The volume of middle graphite felt materials preferably accounts for the 35 ~ 40% of reactor working volume.
Using artificial wastewater carry out sludge stationary culture, formula be 0.25 g/L of sodium acetate, 0.25 g/L of sodium propionate,
0.25 g/L of sodium butyrate, 0.5 g/L of urea, 0.25 g/L of glucose, 0.1 g/L of dipotassium hydrogen phosphate use NaHCO3Adjust water inlet
PH is 7.2, wherein in order in subsequent experimental sludge can adapt to higher COD, concentration of glucose increases to 3.5 by 0.25 g/L
g/L。
The inoculum concentration of anaerobic sludge is account for reactor volume 25% ~ 33%, the sludge volatile suspended matter（VSS）
It is 5.00 ~ 40.00 g/L, total suspended matter（TSS）It is 5.00 ~ 50.00 g/L, VSS/TSS is 0.00 ~ 88.89%.
The sludge loading raising stage, which is introduced into using diluted cassava alcohol waste water step by step in reactor, flows back, reflux ratio 1:
3~1:2, so that the sludge of itself and immobilization is come into full contact with, mass exchange, dilution ratio 1:5~1:1, COD removal rate, methane production
Amount stabilization is considered as domestication and terminates.
The cassava alcohol waste water contains a large amount of organic compound and suspended matter, belongs to high-concentration acid organic wastewater,
Wherein pH value 3.00 ~ 6.00, COD are the mg/L of 20000 mg/L ~ 30000, and total nitrogen is the mg/L of 60 mg/L ~ 80, total volatility
Aliphatic acid（VFAs）It is the mM of 15 mM ~ 30.
Heretofore described anaerobic reactor can be the anaerobic reactor of disposable type, and graphite felt materials are filled in
Sludge carrier is used as in anaerobic reactor.
In order to study conveniently, anaerobic biological reactor of the present invention is designed, designed and by the big member of Nanjing work
Triumphant bioenergy Environmental Protection Technology Co., Ltd manufacture, structure are shown in that Fig. 1, reactor assembly include：Into water storage tank, water inlet peristaltic pump,
Flow back peristaltic pump, anaerobic reactor, chuck, sample tap, holder, three phase separator, sedimentation basin and gas collecting apparatus；Water inlet peristaltic pump
Both ends are separately connected into water storage tank and anaerobic reactor, and folder is set on the outside of anaerobic reactor, and reaction is maintained for water cycle
The temperature of device is equipped with holder inside anaerobic reactor, and holder is preferably contacted with graphite felt carrier by microorganism species, sewage
It flows back in the reactor by the peristaltic pump that flows back and obtains the contact of larger area, handles, pass through the system that sample tap measures sewage
Row index, three phase separator enable gas-liquid-solid to detach, and gas collecting apparatus is entered at the top of digestion gas autoreactor and calculates methane production
With detection methane concentration；Mud granule slides the fixed bed for being settled down to reactor bottom automatically；It is heavy that digestive juice enters after processing
Shallow lake pond, sludge can be reused by precipitation.
Graphite felt carrier is placed in holder, and the volume that graphite felt carrier is added accounts for the 35 ~ 40% of reactor working volume.It will
Anaerobic sludge is inoculated on graphite felt carrier, about 20 days periods of stationary culture 2 ~ 3, and sludge carries out physics suction with graphite felt carrier
Attached, using the good surface charged characteristic of graphite felt, flora can be rapidly completed sludge attachment by Electron Transfer and consolidate
Surely change process；The stage is improved subsequently into load, domestication culture is carried out, by cassava alcohol waste water according to dilution ratio 1:5~1:1
It is diluted into water, 1 is controlled with reflux pump:3~1:2 reflux ratio flows back in reactor, makes the sludge and wood of immobilization
Potato alcohol waste water comes into full contact with, and is considered as domestication with COD removal rates, methane production stabilization and is terminated, enters stable operation stage later,
Using cassava alcohol waste water raw water sample introduction, organic loading rate（OLR）It is 12.00 ~ 16.00kg COD/ (m3D), hydraulic retention
Time（HRT）It is 0.3 ~ 0.5 h, is discharged after processing.Reactor for treatment sewage ability is stablized, and COD removal rates reach 95% or more,
Water outlet VFA is 6.17mM hereinafter, pH is 7.0 ~ 7.5, and methane production is 1680 ~ 1725 ml/d.
Anaerobic sludge employed in the present invention is provided by Zhenjiang Changxing Alcohol Plant, by anaerobic sludge according to accounting for reactor body
Long-pending 25% ~ 33% is inoculated on graphite felt carrier.
Sludge is improved by culture domestication, load, 3 stages of stable operation reach COD removal rates stabilization, makes anaerobic reaction
Device reaches stable, and anaerobic reactor treated cassava alcohol waste water COD and volatile fatty acid are reduced, the pH value of water outlet
7.2 or so are maintained, while the methanogen floras being adsorbed in the sludge of graphite felt carrier is accelerated by the charged characteristic of graphite felt
Inter-species direct electron transfer process is more easily accepted by the electronics of other bacterial strains offer, accelerates the process for generating biogas, increases
Produce methane quantity.
Advantageous effect：Compared with prior art, graphite felt is filled as fixed bed carrier adsorption flora and is reacted by the present invention
Device handles high concentration cassava alcohol sewage, and the period of operation is short compared with other reactors, reactor volume small occupied space
It is smaller can continuous processing cassava alcohol waste water, can be simple for process, save economic cost, run reactor after anaerobic reaction system
Methanogen and acetogen reach balance in system, are discharged pH value maintenance 7.2 or so so as to obtain more methane, and
COD of sewage removal rate is higher, and treated, and sewage reaches discharge standard and conducive to recycling.
The activated carbon fibre that COD removal rates grow pine report compared with woods makees fixed bed anaerobic reactor processing high concentration molasses containing waste water
It is high by about 10%, it is high by about 15% compared with the composite materials filling anaerobic reactor such as sodium alginate of Nie Qian reports, compared with the UASB of item Yun report
Reactor for treatment high concentration food fermentation waste water is high by about 30%.
Description of the drawings：
Fig. 1 is reactor assembly figure；Wherein：1- into water storage tank, intake peristaltic pump by 2-, and 3- flows back peristaltic pump, and 4- anaerobism is anti-
Answer device, 5- chucks, 6- sample taps, 7- holders, 8- three phase separators, 9- sedimentation basins, 10- gas collecting apparatus；
Fig. 2 is anaerobic biological reactor at any time to the COD removal rate variation diagrams of cassava alcohol；
Fig. 3 is that anaerobic biological reactor is discharged VFA variation diagrams at any time；
Fig. 4 is that anaerobic biological reactor is discharged pH variation diagrams at any time；
Fig. 5 is that anaerobic biological reactor produces biogas total amount variation diagram at any time；
Fig. 6 anaerobic biological reactors methane phase concentration variation diagram at any time.
Specific implementation mode
Anaerobic sludge employed in following embodiment comes from Zhenjiang Changxing Alcohol Plant,
Used anaerobic biological reactor is designed, designed and by the big member of Nanjing work triumphant bioenergy environmental protection science and technology
Co., Ltd manufactures, and total volume is 3460 cm3, graphite felt carrier dimensions L × D × H is 20 × 20 × 5mm.
Cassava alcohol waste water come from Zhenjiang Changxing Alcohol Plant, pH value be 3.00 ~ 6.00, COD be 20000 mg/L ~
30000 mg/L, total nitrogen are the mg/L of 60 mg/L ~ 80, total volatile fatty acid（VFAs）It is the mM of 15 mM ~ 30, belongs to highly concentrated
Spend acidic organic wastewater.
Embodiment 1
It weighs 195g graphite felts and it is cut into fritter carrier according to the size that L × D × H is 20 × 20 × 5mm and be placed in branch
In frame.It measures 1000mL anaerobic sludges to be inoculated on the graphite felt carrier in reactor, stage user is tamed in the culture of sludge
Work waste water is cultivated, and formula is 0.25 g/L of sodium acetate, 0.25 g/L of sodium propionate, 0.25 g/L of sodium butyrate, urea 0.5
G/L, 0.25 g/L of glucose, 0.1 g/L of dipotassium hydrogen phosphate use NaHCO3It is 7.2 to adjust inlet flow-patterm.Wherein for subsequent experimental
Middle sludge can adapt to higher COD, and concentration of glucose increases to 3.5 g/L by 0.25 g/L, and the artificial wastewater COD of configuration is
1024 mg/L of mg/ L ~ 4596, organic loading rate（OLR）It is 1.46 kg COD/ (m3 d)~10.58 kg COD/(m3
D), cultivation temperature is 35 DEG C, this stage enables sludge to be preferably immobilized on graphite felt carrier using stationary culture.By scheming
After 2 ~ Fig. 6 can be seen that 3 periods of operation, terminate wherein reaching stabilization with COD removal rates and being considered as a cycle, a cycle
About 5 ~ 7 days, the artificial wastewater that each period more renews, COD removal rates reached 80% or more, and water outlet VFA is 2 ~ 2.5mM, and pH is
7.5 ~ 8.0, biogas output is 320 ~ 330 ml/d.
Enter load later and improve the stage, by cassava alcohol waste water according to dilution ratio 1:5~1:1 is diluted into water, into
Water COD is the mg/L of 5000mg/ L ~ 21160, organic loading rate（OLR）It is 1.46 kg COD/ (m3 d) ~ 10.58 kg
COD/(m3D), this stage reflux peristaltic pump control 1:3~1:2 reflux ratio flows back in reactor, makes immobilization
Sludge comes into full contact with cassava alcohol waste water, and cultivation temperature is 35 DEG C, is considered as domestication knot with COD removal rates, methane production stabilization
Beam, 13 about 65 days periods post-reactor COD removal rates reach stable, stablize 85% ~ 90%, water outlet VFA is 1 ~ 3.5mM, pH
It is 7.0 ~ 7.5, biogas output is stablized in 1000 ~ 1200ml/d.
Enter stable operation stage later, this stage uses cassava alcohol waste water raw water sample introduction, will using water inlet peristaltic pump
Water is pumped into reactor, sewage indices is measured by sampling by sample tap daily, wherein raw water pH value is 3.00 ~ 6.00, COD
It is the mg/L of 20000 mg/L ~ 30000, total nitrogen is the mg/L of 60 mg/L ~ 80, total volatile fatty acid（VFAs）Be 15 mM ~
30 mM.It is considered as end cycle when COD removal rates reach highest and stablize and is passed through new raw water and is handled.It can be with by Fig. 4
Find out that 7 about 30 days periods post-reactor treated sewage abilities reach stable, pH maintains 7.0 ~ 7.5, be suitble to methanogen and
The growth of anaerobe promotes the generation of biogas.Gradually stablize in this stage COD removal rates as seen from Figure 2
95%, illustrate that the sludge flora in this stage has slowly adapted to the cassava alcohol waste water and can preferably handle.It can be seen by Fig. 3
Go out water outlet VFA after stable operation it is overall in 6.17mM hereinafter, stablize relatively, illustrate that the acetogen growth in reactor is preferable
Organic matter more in sewage is utilized.Continuous service 200 days after system is stablized, COD removal rates maintain 95%, illustrate that this is
System has preferable operation stability, long operational time.From figs. 5 and 6, it can be seen that the operation production biogas with reactor is total
Amount and methane concentration all increased, and illustrate the organic matter that this reactor can preferably degrade in sewage, while in flora
Methanogen activity is higher, and final methane production is 1680 ~ 1725 ml/d.
Claims (9)
1. a kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water, which is characterized in that including as follows
Step：
1）Graphite felt materials are filled in anaerobic reactor and are used as sludge carrier, the volume of graphite felt materials accounts for reactor work
The 30 ~ 45% of volume；
2）Anaerobic sludge is seeded on graphite felt carrier, stationary culture, anaerobic sludge is made to be adsorbed on graphite felt carrier；
3）Load is carried out to anaerobic sludge and improves domestication culture, diluted cassava alcohol waste water is introduced into reactor time step by step for use
Stream, makes the sludge of immobilization be come into full contact with cassava alcohol waste water, is considered as domestication with COD removal rates, methane production stabilization and is terminated；
4）Pending cassava alcohol waste water is entered in anaerobic reactor and is handled, detection COD removal rates reach 95% with
On, water outlet.
2. a kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water according to claim 1,
It is characterized in that, step 1）The volume of middle graphite felt materials accounts for the 35% ~ 40% of reactor working volume.
3. a kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water according to claim 1,
It is characterized in that, step 2）The inoculum concentration of middle anaerobic sludge is account for reactor volume 25% ~ 33%, is inoculated into graphite felt carrier
On.
4. a kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water according to claim 1,
It is characterized in that, step 2）Described in the volatile suspended matter VSS of anaerobic sludge be 5.00 ~ 40.00 g/L, total suspended matter
TSS is 5.00 ~ 50.00 g/L.
5. a kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water according to claim 1,
It is characterized in that, step 2）The middle stationary culture that sludge is carried out using artificial wastewater, formula are 0.25 g/L of sodium acetate, propionic acid
0.25 g/L of sodium, 0.25 g/L of sodium butyrate, 0.5 g/L of urea, 0.25 ~ 3.5 g/L of glucose, 0.1 g/L of dipotassium hydrogen phosphate are used
NaHCO3It is 7.2 to adjust inlet flow-patterm.
6. a kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water according to claim 1,
It is characterized in that, step 3）Middle reflux ratio is 1:3~1:2.
7. a kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water according to claim 1,
It is characterized in that, step 3）Described in step by step diluted cassava alcohol waste water dilution ratio be 1:5~1:1.
8. a kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water according to claim 1,
It is characterized in that, step 4）In pending cassava alcohol waste water pH value be 3.00 ~ 6.00, COD be 20000 mg/L ~
30000 mg/L, total nitrogen are the mg/L of 60 mg/L ~ 80, and total volatile fatty acid is the mM of 15 mM ~ 30.
9. a kind of method of graphite felt materials filling anaerobic reactor processing cassava alcohol waste water according to claim 1,
It is characterized in that, step 4）Organic loading rate is 12.00 ~ 16.00 kg COD/ (m in middle processing procedure3D), hydraulic retention
0.3 ~ 0.5 h of time, COD removal rates reach 95% or more, and water outlet VFA is 6.17mM hereinafter, pH is 7.00 ~ 7.50, methane production
For 1680 ~ 1725 mL/d.
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