CN106336081A - Method for treating wastewater in cellulose fuel ethanol production - Google Patents
Method for treating wastewater in cellulose fuel ethanol production Download PDFInfo
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- CN106336081A CN106336081A CN201610881151.1A CN201610881151A CN106336081A CN 106336081 A CN106336081 A CN 106336081A CN 201610881151 A CN201610881151 A CN 201610881151A CN 106336081 A CN106336081 A CN 106336081A
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- waste water
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- wastewater
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- anaerobism
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
- C02F3/30—Aerobic and anaerobic processes
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
The invention relates to a method for treating wastewater in cellulose fuel ethanol production. The problems of high chemical oxygen demand, large chromaticity and biotoxicity and difficulty in treatment of wastewater generated in the current cellulose fuel ethanol production process are solved. The method comprises high pressure hydrothermal method pretreatment and anaerobic UASB reactor and SBR reactor treatment. Through the high pressure hydrothermal method pretreatment, refractory organics in the wastewater become easily-degraded substances, the wastewater biodegradability is improved, an anaerobic UASB reactor can degrade most of organic matter in the wastewater, and an SBR reactor can further degrade organic matter in the wastewater and improve wastewater quality. By adoption of the method for treating the wastewater in cellulose fuel ethanol production, the chemical oxygen demand removal rate in the wastewater reaches 95% or above, the chroma removing rate of the wastewater is 50% or above, the biological toxicity is reduced by 85% or above, and effluent conforms to the national discharge standard.
Description
Technical field
The invention belongs to technical field of waste water processing, it is related to a kind of efficient cellulosic ethanol production waste water treatment process.
Background technology
With the increasing being continuously increased with various countries' process of industrialization of world population quantity, the consumption of the energy is gradually increased,
Energy crisis becomes one of significant problem that the world today faces.The fossil fuels such as oil, natural gas and coal remain current
Solve the main source of growing energy demand.The world consumes 3,000,000,000 barrels of oil every year at present, and colin estimated in 21 century
The year fifties, petroleum reserves will be close to exhausted.Increasingly rise with oil price and global warming, reduce and fossil are fired
The dependence of material is more and more important, and oil is a kind of non-renewable energy resources, finds a kind of reproducible alternative energy source and seems very
Urgent.
Bio-fuel is the very promising substitute fossil fuels of one kind, it have can supplement fossil fuel resource, reduce stone
The feature of oily resource external dependence degree, minimizing greenhouse gases and pollutant emission, is subject to the extensive concern of countries in the world in recent years.Combustion
Material ethanol, as a kind of important bio-fuel, has higher octane number and relatively low CO2 emission compared with gasoline
Amount, therefore widely being thought can be used as the substitute of gasoline or additive.Alcohol fuel refers to using corn, sugarcane, cassava
It is raw material with living beings class materials such as celluloses, produce ethanol as the energy through steps such as pretreatment, saccharification, fermentation, distillations.
But corn and sucrose to produce alcohol fuel as cereal crops and to there is higher Fuel Ethanol Production Cost and reduce people
The problem of class grain usage amount, pessimistic with the development prospect that grain produces alcohol fuel for raw material.With lignocellulosic material
(maize straw, bagasse, wheat stalk, switchgrass, city waste paper etc.) produces alcohol fuel for alleviation energy supply pressure
And maintain economic sustainable development all to have to be of great significance.
With the continuous development of cellulosic ethanol industry, the waste water handling problem of generation is more and more prominent.Cellulosic ethanol
The continuous enlarged meeting of industry produces substantial amounts of high concentrated organic wastewater, and this waste water has high chemical oxygen demand, high chroma, is in acid
Property, containing poisonous and harmful substances such as multiple benzene series, ring systems, it is a kind of high concentrated organic wastewater difficult to deal with, if cellulose
Alcohol wastewater can not obtain effective place to be comprehended environment is caused with severe contamination, therefore, explores a cost-effective cellulose
Alcohol wastewater processes road, and the popularization for cellulosic ethanol production technology and environmental protection have extremely important reality meaning
Justice.In view of cellulosic ethanol production waste water quality complicated component, difficult the problems such as, be badly in need of at present developing a kind of cellulosic ethanol
Production wastewater treatment technique.
Content of the invention
For organic matter difficult degradation in cellulosic ethanol waste water, colourity is high, bio-toxicity is big, intractable problem, this
Bright process using physical chemistry treatment technology and biologic treating technique is combined it is proposed that a kind of give birth to for cellulose fuel ethanol
The processing method of waste water in product.
In order to solve above-mentioned technical problem, the place of waste water in a kind of production for cellulose fuel ethanol proposed by the present invention
Reason method, waste water passes sequentially through high pressure hydrothermal reactor, anaerobism uasb reactor and sbr reactor for treatment, and step is as follows:
Step one, the waste water producing in cellulose fuel ethanol production process is passed through high pressure hydrothermal reactor, and adjusts
The ph of section waste water is 3.0～4.0；Then, hydrogen peroxide and ferrous sulfate, wherein, hydrogen peroxide are added in high pressure hydrothermal reactor
Volume ratio with waste water is 20ml/l, and ferrous sulfate is 1g/l with the mass volume ratio of waste water, is stirred during adding；Useless
Water residence time in high pressure hydrothermal reactor is 1～2h, sets high pressure hydrothermal reactor interior temperature degree as 150～200 DEG C, pressure
Power is 1.5～2.0mpa；
Step 2, reacted for step one waste water is passed through anaerobism uasb reactor, contains in described anaerobism uasb reactor
Anaerobic sludge through domestication, wherein, anaerobic sludge is 10g/l with the mass volume ratio of waste water, and waste water is in anaerobism uasb reactor
Interior residence time is 40～60h, sets temperature in anaerobism uasb reactor as 36 DEG C；
Step 3, reacted for step 2 waste water is passed through sbr reactor, the dissolved oxygen concentration in described sbr reactor
In 2～6mg/l, waste water discharges after stopping reaction 16～24h in sbr reactor, so far completes the process of waste water.
The processing method that the present invention is used for waste water in cellulose fuel ethanol production adopts physical chemistry treatment technology and life
Thing treatment technology processes cellulose fuel ethanol waste water, through " water and effluent monitoring analysis method " fourth edition, the acute poison of water quality
Property mensure Luminous bacteria (gb/t15441-1995) and Related literature analysis method detection waste water in COD remove
Rate reaches more than 95%, and in waste water, chroma removal rate reaches more than 50%, and bio-toxicity reduces more than 85%, and water outlet meets country row
Put standard (fermentation alcohol and Liquor-making industry pollution discharge standard (gb 27631-2011)).
Brief description
Fig. 1 is the process chart that the present invention is used for the processing method of waste water during cellulose fuel ethanol produces.
Specific embodiment
Tell about the detailed process of the present invention by the following examples, provide the convenience that embodiment is to understand, definitely not
Limit the present invention.
Embodiment 1:
Provided by the present invention for cellulose fuel ethanol produce in waste water processing method, device therefor as shown in figure 1,
Waste water passes sequentially through qualified discharge after high pressure hydrothermal reactor 1, anaerobism uasb reactor 2 and sbr reactor 3 are processed, concrete step
Suddenly as follows:
Step one: by COD under original state be 12400mg/l, biochemical oxygen demand (BOD) on the 5th be 2880mg/l, colourity
For 1000 times, bio-toxicity is 1.707mg zn2+The waste water producing in the cellulose fuel ethanol production process of/l is passed through high pressure
Hydrothermal reactor 1, and adjust ph to 3.0, then hydrogen peroxide is added for 20ml/l with the volume ratio of hydrogen peroxide and waste water, with sulfuric acid
The ferrous mass volume ratio with waste water adds ferrous sulfate for 1g/l, is stirred during adding, and meanwhile, sets water under high pressure
Temperature in thermal reactor 1 is 150 DEG C, and pressure is 1.5mpa, makes waste water stop 1h in high pressure hydrothermal reactor 1.
Step 2, reacted for step one waste water is passed through anaerobism uasb reactor 2, in anaerobism uasb reactor 2, contains warp
The anaerobic sludge of domestication, wherein, anaerobic sludge is 10g/l with the mass volume ratio of waste water, the temperature in anaerobism uasb reactor 2
It is maintained at 36 DEG C, make waste water stop 40h in anaerobism uasb reactor 2, produced biogas drains into biogas in this course of reaction
Storage tank.
Step 3, reacted for step 2 waste water is passed through sbr reactor 3, by being passed through sky to described sbr reactor 3
Gas makes wherein Dissolved Oxygen concentration Control in 3mg/l, meanwhile, be passed through the effect that air also acts as stirring, sets waste water and reacts in sbr
The time stopping reaction in device is 16h, reacts discharge after terminating, so far completes the process of waste water.
Waste water, high pressure hydrothermal reactor water outlet, the reactor water outlet of anaerobism uasb and sbr reactor water outlet in the present embodiment 1
COD (cod), biochemical oxygen demand (BOD) (bod on the 5th5), the situation of change of colourity and bio-toxicity as shown in table 1.
Table 1
Embodiment 2: the waste water producing in cellulose fuel ethanol production process is processed, step and embodiment 1 base
This is identical, is different only in that: in step one, the ph value of high pressure hydrothermal reactor 1 waste water is changed to 3.5 by 3.0, sets high pressure hydro-thermal
Temperature in reactor 1 is changed to 180 DEG C by 150 DEG C, and pressure is changed to 1.8mpa by 1.5mpa, and waste water is in high pressure hydrothermal reactor 1
The interior time of staying increases to 1.5h by 1.h；In step 2, waste water anaerobism uasb reactor 2 the stop reaction time by 40h
Increase to 50h；In step 3, waste water stops the reaction time in sbr reactor and increases to 20h by 16h.
Waste water, high pressure hydrothermal reactor water outlet, the reactor water outlet of anaerobism uasb and sbr reactor water outlet in the present embodiment 2
COD (cod), biochemical oxygen demand (BOD) (bod on the 5th5), the situation of change of colourity and bio-toxicity as shown in table 2.
Table 2
Embodiment 3: the waste water producing in cellulose fuel ethanol production process is processed, step and embodiment 1 base
This is identical, is different only in that: in step one, the ph value of high pressure hydrothermal reactor 1 waste water is changed to 4.0 by 3.0, sets high pressure hydro-thermal
Temperature in reactor 1 is changed to 200 DEG C by 150 DEG C, and pressure is changed to 2.0mpa by 1.5mpa, and waste water is in high pressure hydrothermal reactor 1
The interior time of staying increases to 2h by 1.h；In step 2, waste water was increased by 40h in the stop reaction time of anaerobism uasb reactor 2
Add to 60h；In step 3, waste water stops the reaction time in sbr reactor and increases to 24h by 16h.
Waste water, high pressure hydrothermal reactor water outlet, the reactor water outlet of anaerobism uasb and sbr reactor water outlet in the present embodiment 3
COD (cod), biochemical oxygen demand (BOD) (bod on the 5th5), the situation of change of colourity and bio-toxicity as shown in table 3.
Table 3
Be can be seen that when waste water is in high pressure hydrothermal reactor, anaerobism uasb reactor and sbr reactor by above-mentioned data
Time of staying when increasing, the clearance of the COD of waste water, biochemical oxygen demand (BOD) on the 5th, colourity and bio-toxicity is all
Increase, but the COD clearance of waste water be all more than 95%, biochemical oxygen demand (BOD) clearance on the 5th all more than 97%, color
, all more than 50%, the clearance of bio-toxicity is all more than 85% for degree clearance.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement
Example, all technical schemes belonging under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvement without departing from the principles of the present invention and equivalent, these improve and wait
Also should be regarded as protection scope of the present invention with replacement.
Claims (1)
1. in a kind of production for cellulose fuel ethanol waste water processing method, waste water pass sequentially through high pressure hydrothermal reactor,
Anaerobism uasb reactor and sbr reactor for treatment are it is characterised in that step is as follows:
Step one, the waste water producing in cellulose fuel ethanol production process is passed through high pressure hydrothermal reactor, and adjusts useless
The ph of water is 3.0～4.0；Then, add hydrogen peroxide and ferrous sulfate in high pressure hydrothermal reactor, wherein, hydrogen peroxide with useless
The volume ratio of water is 20ml/l, and ferrous sulfate is 1g/l with the mass volume ratio of waste water, is stirred during adding；Waste water exists
In high pressure hydrothermal reactor, residence time is 1～2h, sets high pressure hydrothermal reactor interior temperature degree as 150～200 DEG C, pressure is
1.5～2.0mpa；
Step 2, reacted for step one waste water is passed through anaerobism uasb reactor, contains through taming and dociling in described anaerobism uasb reactor
The anaerobic sludge changed, wherein, anaerobic sludge is 10g/l with the mass volume ratio of waste water, and waste water stops in anaerobism uasb reactor
The time stayed is 40～60h, sets temperature in anaerobism uasb reactor as 36 DEG C；
Step 3, reacted for step 2 waste water is passed through sbr reactor, the dissolved oxygen concentration in described sbr reactor 2～
6mg/l, waste water discharges after stopping reaction 16～24h in sbr reactor, so far completes the process of waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610881151.1A CN106336081A (en) | 2016-10-09 | 2016-10-09 | Method for treating wastewater in cellulose fuel ethanol production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610881151.1A CN106336081A (en) | 2016-10-09 | 2016-10-09 | Method for treating wastewater in cellulose fuel ethanol production |
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| CN201610881151.1A Pending CN106336081A (en) | 2016-10-09 | 2016-10-09 | Method for treating wastewater in cellulose fuel ethanol production |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020016674A (en) * | 2000-08-26 | 2002-03-06 | 박호군 | Advanced Piggery Wastewater Treatment System |
| CN203319823U (en) * | 2013-05-20 | 2013-12-04 | 山东国瑞环保产业有限公司 | Cellulose ether wastewater treatment equipment |
| CN103570184A (en) * | 2012-07-31 | 2014-02-12 | 青岛嘉能节能环保技术有限公司 | Treatment method of cellulose fuel ethanol waste water |
| CN103771655A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Cellulose ethanol fermentation waste liquor treatment method |
-
2016
- 2016-10-09 CN CN201610881151.1A patent/CN106336081A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020016674A (en) * | 2000-08-26 | 2002-03-06 | 박호군 | Advanced Piggery Wastewater Treatment System |
| CN103570184A (en) * | 2012-07-31 | 2014-02-12 | 青岛嘉能节能环保技术有限公司 | Treatment method of cellulose fuel ethanol waste water |
| CN103771655A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Cellulose ethanol fermentation waste liquor treatment method |
| CN203319823U (en) * | 2013-05-20 | 2013-12-04 | 山东国瑞环保产业有限公司 | Cellulose ether wastewater treatment equipment |
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Application publication date: 20170118 |
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