CN105060621B - A kind of method for strengthening biochemical treatment cellulose fuel ethanol waste water - Google Patents
A kind of method for strengthening biochemical treatment cellulose fuel ethanol waste water Download PDFInfo
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- CN105060621B CN105060621B CN201510442615.4A CN201510442615A CN105060621B CN 105060621 B CN105060621 B CN 105060621B CN 201510442615 A CN201510442615 A CN 201510442615A CN 105060621 B CN105060621 B CN 105060621B
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Abstract
A kind of method for strengthening biochemical treatment cellulose fuel ethanol waste water, it is related to a kind of fuel ethanol wastewater processing method.The inventive method can cut down organic concentration in waste water, improve the biodegradability of waste water.Processing method：First, anaerobism CSTR reactors carry out anaerobic reduction reaction；2nd, anaerobism IC reactors carry out anaerobic methane production reaction；3rd, part carries out ozone processing backflow, and remaining waste water carries out sbr reactor device processing.Cellulose fuel ethanol waste water is handled using the inventive method, influent COD is about 50000~60000mg/L, COD value can be down to 1000~1500mg/L after being handled through system, COD clearances are up to more than 95%.
Description
Technical field
The present invention relates to a kind of fuel ethanol wastewater processing method.
Background technology
In order to mitigate the environmental pollution triggered for a long time using fossil fuel and energy crisis, bio-fuel ethanol quilt
It is widely popularized, and gradually realizes industrialization.The raw materials for production of early stage bio-fuel are the cereal crops such as soybean and corn, in order to keep away
Exempt from the crisis for " strive grain with people, strive ground with grain " occur, bio-fuel production uses the celluloses such as stalk, straw instead for raw material.
With the expansion of cellulose fuel ethanol industry size, the waste water total amount produced in its production process also constantly increases
Plus；According to the literature, 1 ton of cellulose fuel ethanol is often produced, about 25~35t industrial wastewaters will be produced.Cellulose fuel ethanol
Produce organic concentration in waste water high；And would generally use ammonia fiber in the pretreatment of raw material rank that cellulose fuel ethanol is produced
Contain the difficult biological drop such as portion of cellulose, lignin, hemicellulose in blasting procedure, the waste water that continuous steam blasting gear is discharged
Material is solved, so the biodegradability of cellulose fuel ethanol production waste water is poor.
The content of the invention
The invention provides a kind of method for strengthening biochemical treatment cellulose fuel ethanol waste water, this method can cut down useless
Organic substance in water concentration, improves the biodegradability of waste water.
The method of present invention reinforcing biochemical treatment cellulose fuel ethanol waste water is carried out according to the following steps：
First, cellulose fuel ethanol waste water is passed through progress anaerobic reduction reaction, anaerobism CSTR in anaerobism CSTR reactors
Containing the anaerobic sludge through domestication in reactor；
2nd, step one anaerobism CSTR reactor water outlets are passed through anaerobism IC reactors and carry out anaerobic methane production reaction, anaerobism IC
Containing the anaerobic grain sludge through domestication in reactor；
3rd, step 2 anaerobism IC reactor water outlets it is a part of it is treated by ozone after be back to anaerobism CSTR reactors, ozone
The hydraulic detention time of tank is 140min, and ozone dosage is 0.04g/Lh, and another part anaerobism IC reactor water outlets are then led to
Enter after the processing of sbr reactor device, complete cellulose fuel ethanol waste water reinforcing biochemical treatment；
Hydraulic detention time is 54h in anaerobism CSTR reactors in step one；
Hydraulic detention time is 24h in anaerobism IC reactors in step 2；
Reflux ratio is 6 in step 3:1；
Step 3 hydraulic detention time in sbr reactor device is 18h；Intermittent aerating, aeration mode are used in sbr reactor device
For aeration 4h, stop aeration agitation 1~2h of denitrification, circulation is carried out.
Processing method of the present invention has technically reliable, manage that simple, easy to maintenance, flow is succinct, small investment, operating cost
The small advantage of low, floor space.The inventive method anti impulsion load ability is strong, it is possible to ensure that stable water outlet is up to standard.
Step one anaerobism CSTR reactors of the present invention are closed tank body, and being inside provided with agitating device makes at waste water and microorganism
In being thoroughly mixed state, it is to avoid layering, add the chance that material contact with microorganism, and uniform passed beneficial to what is reacted
Heat.The anaerobic waste water fermentation process carried out in anaerobism CSTR reactors is favorably improved the biodegradability of waste water.What is newly entered is useless
Water is thoroughly mixed with the sludge in fermentor quickly under stirring, waste strength is remained relatively low state, tool
There is the ability of higher anti-shock loading.
The B/C of cellulose fuel ethanol waste water is 0.43, through step one anaerobism CSTR reactor for treatment, anaerobism CSTR reactions
The B/C ratios of device water outlet are down to 0.20, and most of biodegradable material is by the microbial degradation in CSTR reactors；Fiber
Plain fuel ethanol wastewater B/C values of water outlet after step 2 anaerobism IC reactor for treatment are down to 0.15.Under ozonidation
The cyclic structure open loop of lignin in cellulose fuel ethanol waste water, now the B/C values of water outlet are significantly improved after ozone oxidation, are opened
Small molecule organic material after ring is more easy to be utilized by microorganism；Waste water water body is back to anaerobism CSTR reactors after ozone processing
In, by 6：1 is mixed with raw water, and the B/C values rise of water body is 0.47, and biodegradability is greatly improved.Therefore, the present invention is through smelly
Effluent recycling after oxygen processing, mixes with cellulose fuel ethanol waste water, dilutes, significantly improve the biodegradability of water body,
So as to improve the anaerobic bio-treated efficiency of cellulose fuel ethanol waste water.
The water outlet of sbr reactor device (i.e. complete cellulose fuel ethanol waste water strengthen biochemical treatment water body) B/C values be only
0.08, illustrate to have carried out sufficient biodegradation to the organic pollution in water body by the inventive method.
Use the ammonia nitrogen average removal rate of the inventive method cellulose fuel ethanol waste water flat for 80%, COD total removal rates
Reach more than 95%.The processing of cellulose fuel ethanol waste water later stage advanced oxidation can be reduced after the inventive method is handled
Input.
Brief description of the drawings
Fig. 1 is the change curve of water body pH in course of reaction in the step 3 sbr reactor device of embodiment one.
Fig. 2 is the cellulose fuel ethanol waste water COD concentration of embodiment 1, the COD concentration of anaerobism IC reactor water outlets, water outlet
COD concentration and water body COD clearance curve maps.
Embodiment
Technical solution of the present invention is not limited to act embodiment set forth below, in addition between each embodiment
Any combination.
Embodiment one：The method of present embodiment reinforcing biochemical treatment cellulose fuel ethanol waste water presses following step
It is rapid to carry out：
First, cellulose fuel ethanol waste water is passed through progress anaerobic reduction reaction, anaerobism CSTR in anaerobism CSTR reactors
Containing the anaerobic sludge through domestication in reactor；
2nd, step one anaerobism CSTR reactor water outlets are passed through anaerobism IC reactors and carry out anaerobic methane production reaction, anaerobism IC
Containing the anaerobic grain sludge through domestication in reactor；
3rd, step 2 anaerobism IC reactor water outlets it is a part of it is treated by ozone after be back to anaerobism CSTR reactors, ozone
The hydraulic detention time of tank is 140min, and ozone dosage is 0.04g/Lh, and another part anaerobism IC reactor water outlets are then led to
Enter after the processing of sbr reactor device, complete cellulose fuel ethanol waste water reinforcing biochemical treatment；
Hydraulic detention time is 54h in anaerobism CSTR reactors in step one；
Hydraulic detention time is 24h in anaerobism IC reactors in step 2；
Reflux ratio is 6 in step 3:1；
Step 3 hydraulic detention time in sbr reactor device is 18h；Intermittent aerating, aeration mode are used in sbr reactor device
For aeration 4h, stop aeration agitation 1~2h of denitrification, circulation is carried out.
The volumetric loading rate of present embodiment step one anaerobism CSTR reactors has reached 6.5kg/ (m3D), step 2
The volumetric loading of anaerobism IC reactors has reached 5.0kg/ (m3D), step 3 sbr reactor device volumetric loading rate reaches 0.6kg/
(m3D), system operation is relatively stablized.
The cyclic structure open loop of lignin in cellulose fuel ethanol waste water under ozonidation, small point after open loop
Sub- organic substance is more easy to be utilized by microorganism；Therefore, water body is back in anaerobism CSTR reactors again after ozone Oxidation Treatment
Secondary carry out Anaerobic Treatment, substantially increases COD biological removal rate.Meanwhile, the ozone Oxidation Treatment water outlet of backflow and cellulose
Fuel ethanol wastewater is mixed, and is reduced the throwing alkali number of water body, is improved the ability of water body anti-shock loading, reduces processing difficult
Degree, is more favorable to the survival of microorganism.
In present embodiment, production acid and production alkali (methane phase) two stages are experienced in CSTR, in production acid phase water body
In basicity can reduce, when can then raise into methane phase stage water body basicity.With step one and two anaerobic reaction, waste water
The reduction of middle sulfate radical (often reduces 0.5mol SO4 2-1mol basicity will be produced), the fermentation of amino acid and protein, contain
Degraded (the equal NH of product of nitrogen organic3, free NH3It is alkaline material) it can all produce basicity.Step one of the present invention and two anaerobism
Reaction make use of cellulose fuel ethanol waste water to produce a large amount of basicity, and abundance is provided for follow-up SBR short distance nitrations reaction
Basicity.
Anaerobism IC reactors capacity of resisting impact load is strong in step 2, and substantial amounts of recirculated water and water inlet are sufficiently mixed, and make water
Harmful substance in body is fully diluted, and greatly reduces influence of the poisonous substance to anaerobic digestion process.Anaerobism IC reactors resist
Low temperature ability is strong；Ability with buffered pH value；Internal automatic cycle, it is not necessary to additionaling power, it is not necessary to set pump forced circulation, is saved
Power consumption；Stable water outlet is good, and reactor classification can reduce water outlet VFA concentration, the extension biological residence time, make reaction steady
Fixed operation.
It is separately added into using anaerobic grain sludge as kind of mud in anaerobism CSTR reactors and anaerobism IC reactors, utilizes fibre
The plain fuel ethanol wastewater of dimension carries out domestication culture.
Embodiment two：The difference of present embodiment and embodiment one is：In step 3 sbr reactor device
Denitrifying carbon source is added into water body after each aeration.Other steps and parameter are identical with embodiment one.
Embodiment three：The difference of present embodiment and embodiment two is：In step 3 sbr reactor device
The denitrifying carbon source added is sodium acetate.Other steps and parameter are identical with embodiment two.
Embodiment four：The difference of present embodiment and embodiment two is：According to water body in step 3
Nitrite adds sodium acetate, and the mass values of sodium acetate amount and Nitrite are 1.0~1.2:1.It is other
Step and parameter are identical with embodiment two.
Embodiment five：The difference of present embodiment and one of embodiment one to four is：In anaerobism
Regulating reservoir before CSTR reactors front end is set.Other steps and parameter are identical with embodiment one to four.
Cellulose fuel ethanol waste water and it is passed through anaerobism CSTR after the waste water that ozone is handled is mixed in preceding regulating reservoir
Reactor.Water pH value is adjusted to 7.0 or so, by water temperature control at 30 DEG C or so in preceding regulating reservoir.
Embodiment six：The difference of present embodiment and one of embodiment one to five is：In anaerobism IC
Regulating reservoir after reactor rear end is set, anaerobism IC reactor output water temperatures are adjusted to 35 ± 1 DEG C.Other steps and parameter and reality
Apply mode one to five identical.
Anaerobism IC reactor output water temperatures are adjusted to 35 ± 1 DEG C of breedings for being conducive to microorganism in sbr reactor device.
Embodiment 1
The method of reinforcing biochemical treatment cellulose fuel ethanol waste water is carried out according to the following steps：
First, cellulose fuel ethanol waste water is passed through progress anaerobic reduction reaction, anaerobism CSTR in anaerobism CSTR reactors
Containing the anaerobic sludge through domestication in reactor；
2nd, step one anaerobism CSTR reactor water outlets are passed through anaerobism IC reactors and carry out anaerobic methane production reaction, anaerobism IC
Containing the anaerobic grain sludge through domestication in reactor；
3rd, step 2 anaerobism IC reactor water outlets it is a part of it is treated by ozone after be back to anaerobism CSTR reactors, ozone
The hydraulic detention time of tank is 140min, and ozone dosage is 0.04g/Lh, and another part anaerobism IC reactor water outlets are then led to
Enter after the processing of sbr reactor device, complete cellulose fuel ethanol waste water reinforcing biochemical treatment；
Hydraulic detention time is 54h in anaerobism CSTR reactors in step one；
Hydraulic detention time is 24h in anaerobism IC reactors in step 2；
Reflux ratio is 6 in step 3:1；
Step 3 hydraulic detention time in sbr reactor device is 18h；Intermittent aerating, aeration mode are used in sbr reactor device
For aeration 4h, stop aeration agitation 1~2h of denitrification, circulation is carried out；
Sodium acetate is added into water body as denitrifying carbon source, sodium acetate after each aeration in step 3 sbr reactor device
The mass values of amount and Nitrite are 1.0~1.2:1.
Cellulose fuel ethanol waste water water quality is as shown in table 1.
(the unit of table 1：mg/L)
Effluent quality is as shown in table 2 after the present embodiment processing.
(the unit of table 2：mg/L)
| Water quality parameter | CODCr | Ammonia nitrogen | Sulfate radical | TP | SS | pH |
| Numerical value | 1000~1500 | 40±5 | 220 | 1 | 100 | 6~9 |
It is 80% with the ammonia nitrogen average removal rate of the inventive method cellulose fuel ethanol waste water, water outlet ammonia nitrogen concentration is stable
In 40mg/L or so, nitrite accumulation rate is stable 97%.
(cellulose fuel ethanol waste water is dilute through ozone oxidation water outlet for the present embodiment anaerobism CSTR reactors inlet COD concentration
Release inlet COD concentration and be reduced to 10000mg/L~12000mg/L), the COD concentration of anaerobism IC reactor water outlets, water outlet COD it is dense
Degree and water body COD clearances are as shown in Figure 2.The inventive method strengthens giving birth to for water body by the way of ozone oxidation and backflow
The property changed, final outflow water COD concentration is calculated total clearance by water body concentration after dilution about in the range of 1000~1500mg/L
It is average also to have reached more than 85%.The inventive method is strong to the anti impulsion load ability of cellulose fuel ethanol waste water, it is possible to
Ensure stable effluent quality.
Claims (6)
1. a kind of method for strengthening biochemical treatment cellulose fuel ethanol waste water, it is characterised in that reinforcing biochemical treatment cellulose combustion
The method of material alcohol wastewater is carried out according to the following steps：
First, cellulose fuel ethanol waste water is passed through progress anaerobic reduction reaction in anaerobism CSTR reactors, anaerobism CSTR reactions
Containing the anaerobic sludge through domestication in device；
2nd, step one anaerobism CSTR reactor water outlets are passed through anaerobism IC reactors and carry out anaerobic methane production reaction, anaerobism IC reactions
Containing the anaerobic grain sludge through domestication in device；
3rd, step 2 anaerobism IC reactor water outlets it is a part of it is treated by ozone after be back to anaerobism CSTR reactors, ozone tank
Hydraulic detention time is 140min, and ozone dosage is 0.04g/Lh, and another part anaerobism IC reactor water outlets are then passed through SBR
After reactor for treatment, cellulose fuel ethanol waste water reinforcing biochemical treatment is completed；
Hydraulic detention time is 54h in anaerobism CSTR reactors in step one；
Hydraulic detention time is 24h in anaerobism IC reactors in step 2；
Reflux ratio is 6 in step 3:1；
Step 3 hydraulic detention time in sbr reactor device is 18h；Intermittent aerating is used in sbr reactor device, aeration mode is exposure
Gas 4h, stopping aeration agitation 1~2h of denitrification, circulation are carried out.
2. a kind of method for strengthening biochemical treatment cellulose fuel ethanol waste water according to claim 1, it is characterised in that
Denitrifying carbon source is added into water body after each aeration in step 3 sbr reactor device.
3. a kind of method for strengthening biochemical treatment cellulose fuel ethanol waste water according to claim 2, it is characterised in that
The denitrifying carbon source added in step 3 sbr reactor device is sodium acetate.
4. a kind of method for strengthening biochemical treatment cellulose fuel ethanol waste water according to claim 3, it is characterised in that
Sodium acetate is added according to Nitrite content in step 3, the mass values of sodium acetate amount and Nitrite are
1.0~1.2:1.
5. a kind of method for strengthening biochemical treatment cellulose fuel ethanol waste water according to claim 1, it is characterised in that
Regulating reservoir before being set in anaerobism CSTR reactors front end.
6. a kind of method for strengthening biochemical treatment cellulose fuel ethanol waste water according to claim 1, it is characterised in that
Regulating reservoir after being set in anaerobism IC reactors rear end, anaerobism IC reactor output water temperatures are adjusted to 35 ± 1 DEG C.
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| JP2005161135A (en) * | 2003-11-28 | 2005-06-23 | Best Tech:Kk | Apparatus and method for advanced treatment of wastewater |
| KR101047030B1 (en) * | 2009-02-16 | 2011-07-06 | 동아대학교 산학협력단 | Dyeing Wastewater Treatment Apparatus and Method Using Anaerobic-Aerobic Biofilter and Ozone Post-treatment Process |
| CN102452770A (en) * | 2010-11-04 | 2012-05-16 | 美舒环保科技（北京）有限公司 | Biochemical treatment/advanced oxidation treatment coupled sewage treatment technique |
| CN102701541A (en) * | 2012-06-28 | 2012-10-03 | 哈尔滨工业大学 | Treatment method of cellulosic ethanol wastewater |
| CN103771655B (en) * | 2012-10-25 | 2015-08-12 | 中国石油化工股份有限公司 | A kind for the treatment of process of cellulose alcoholic fermentation waste liquid |
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Effective date of registration: 20210803 Address after: 100001 No. 1, Zhanzhan Road, Xicheng District, Beijing Patentee after: Beijing University of Civil Engineering and Architecture Address before: 150001 No. 92 West straight street, Nangang District, Heilongjiang, Harbin Patentee before: HARBIN INSTITUTE OF TECHNOLOGY |
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