CN103922471B - Efficient anaerobic reactor used for fuel ethanol waste water secondary anaerobic treatment - Google Patents

Efficient anaerobic reactor used for fuel ethanol waste water secondary anaerobic treatment Download PDF

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Publication number
CN103922471B
CN103922471B CN201410196037.6A CN201410196037A CN103922471B CN 103922471 B CN103922471 B CN 103922471B CN 201410196037 A CN201410196037 A CN 201410196037A CN 103922471 B CN103922471 B CN 103922471B
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reactor
cylindrical shell
tip
taper cone
plate
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CN103922471A (en
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杨蕴毅
王宏杰
秦岭
吴凯
盛爱红
王超林
吴孔伟
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SHANGHAI TIANZHIGUAN RENEWABLE ENERGY CO Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention discloses an efficient anaerobic reactor used for fuel ethanol waste water secondary anaerobic treatment. The efficient anaerobic reactor is divided into a perfect mixing region, a first internal circulation region, a second internal circulation region and a solid-liquid separation region from bottom to top. An inlet water distribution pipe, a first sludge guide plate and a first gas guide plate are arranged in the perfect mixing region from bottom to top. A first internal circulation sleeve, a second gas guide plate and a first reflection cone are arranged in the first internal circulation region from bottom to top. A second internal circulation sleeve, a second sludge guide plate, a second reflecting cone, an gas collecting chamber and a marsh gas lead-out pipe which is communicated to the top of the gas collecting chamber are arranged in the second internal circulation region from bottom to top. A gas-solid separation ring plate and an overflow weir are arranged in the solid-liquid separation region from bottom to top, wherein the overflow weir is externally connected with a water draining pipe, and the lateral wall, below the gas-solid separation ring plate, of the reactor is externally connected with a gas discharging pipe. Reaction and solid-liquid separation are realized after waste water flows through the four regions from bottom to top, and a good treatment effect can be achieved.

Description

A kind of high efficiency anaerobic reactor for the process of fuel ethanol wastewater secondary anaerobic
Technical field
The present invention relates to fuel ethanol wastewater treating apparatus, particularly a kind of high efficiency anaerobic reactor for the process of fuel ethanol wastewater secondary anaerobic.
Background technology
Alcohol fuel has the features such as clean, renewable, the discharge of carbon monoxide and hydrocarbon in vehicle exhaust can be reduced, it is the important component part of regenerative resource, at alternative energy source, environmental protect, promote agriculture industrialization, realize the aspect such as growth of agricultural efficiency, increasing peasant income and there is important function.At present, the strategical planning of national development alcohol fuel requires " do not strive grain with people, do not strive ground with grain ", and the non-grain alcohol fuel of positive scientific development, adheres to based on non-grain, encourages raw material diversification, becomes Fuel Ethanol development trend.Potato starch matter alcohol fuel mainly comprises the root such as cassava and Ipomoea batatas uncooked amylum raw material, because it has processing characteristics good, be applied to the desirable alternative materials of extensive fuel ethanol production, a large amount of acidic high-temperature high concentrated organic wastewater is produced in potato class non-grain starchiness fuel ethanol production process, often produce 1t alcohol fuel and can produce 11 ~ 15t technique waste water, wastewater temperature is more than 60 DEG C, pH is 4 ~ 5, COD (COD) is 40000 ~ 80000mg/L, viscosity is large, high and the not easily Separation of Solid and Liquid of suspension content, but also facing to great number of issues in the processing procedure of the waste water produced in non-grain starchy material production alcohol fuel process at qualified discharge: as suspension content is high, intractability is large, processing cost is high, be difficult to be applied to extensive industrialized development etc.Anaerobic-aerobic group technology is the classical technique of fuel ethanol wastewater process.Traditional fuel ethanol wastewater is generally after Separation of Solid and Liquid, adopt " one-level anaerobism+aerobic " PROCESS FOR TREATMENT, but there is pre-treatment costly in traditional handicraft, investment is large, unstable, thus follow-up Anaerobic Treatment is made troubles, easily system is impacted, suspended solids content in addition due to such waste water is higher, application high efficiency anaerobic reactor UASB, there is unfavorable factor in EGSB, and there is the residues such as cassava and enter the blockage problem that treatment system causes, large-scale complete mixed anaerobic fermentation not easily stirs, sludge loss problem (digested sludge not easily precipitates recovery) etc., one-level anaerobic effluent viscosity is large simultaneously, solid-liquor separation difficulty, full lees wastewater anaerobic operation volumetric loading is usually at 2.5KgCOD/m 3about d, affects fuel ethanol production and economic benefit, and conventional method is back to one-level high temperature anaerobic tank after thermophilic digestion liquid need being carried out mud separation, causes energy consumption and investment greatly to increase, is not suitable for larger processing system.Before entering secondary anaerobic, suspension can not effectively be removed simultaneously, and SS content is still up to 6000 ~ 12000mg/, and the continuous high-efficient having a strong impact on the anaerobic reactors such as follow-up UASB runs.Can not extract the energy (biogas) in waste water to greatest extent, can not effectively be removed by ammonia nitrogen, total nitrogen after traditional aerobic process process, the clearance of nitrogen phosphorus is difficult to reach stable effect simultaneously.Patent " potato class non-grain starchiness alcohol fuel grain liquid processing method " discloses a kind of method of fuel ethanol wastewater process, but secondary anaerobic reactor adopts UASB in the method, Gas Stirring intensity is more weak, hydrodynamics is poor, add water quality viscosity large, cause mass transfer effect not good, COD clearance is only about 50%.Follow-up aerobic biochemical technique, owing to lacking high-quality carbon source, causes nitric efficiency to decline.
Summary of the invention
Goal of the invention: technical problem to be solved by this invention is for the deficiencies in the prior art, provides a kind of high efficiency anaerobic reactor for the process of fuel ethanol wastewater secondary anaerobic, in order to promote Anaerobic Treatment efficiency, takes into account and promotes follow-up denitrification effect.
The invention discloses a kind of high efficiency anaerobic reactor for the process of fuel ethanol wastewater secondary anaerobic, comprise cylindrical shell, in cylindrical shell by lower from be divided into four regions, be complete mixed zone, the first inner circulation zone, the second inner circulation zone and solid-liquid displacement zone respectively; Water inlet water distributor, the first mud guiding plate are set in described complete mixed zone from the bottom to top, and the first aeroscopic plate; Described first inner circulation zone arranges the first Inner eycle sleeve, the second aeroscopic plate from the bottom to top, and the first reflection cone, material declines in the first Inner eycle sleeve, and the formation that rises outside the first Inner eycle sleeve circulates; Described second inner circulation zone arranges the second Inner eycle sleeve, the second mud guiding plate, the second reflection cone, collection chamber from the bottom to top, and the biogas fairlead at connected set air chamber top, material is at the second Inner eycle sleeve) in rise, the formation that declines outside the second Inner eycle sleeve circulates; In described solid-liquid displacement zone, gas solid separation ring flat-plate and downflow weir are set from the bottom to top, wherein downflow weir external connection row water pipe, externally connected exhaust pipe on the cylinder lateral wall below gas solid separation ring flat-plate.
In the present invention, described cylindrical shell cross section is circular or rectangle.
In the present invention, described first mud guiding plate is circular cone tubular, and upward, taper cone barrel sidewall and horizontal plane inclination angle scope are 20 degree ~ 70 degree in taper cone barrel tip.
In the present invention, described first aeroscopic plate is circular cone tubular, and taper cone barrel tip down, tip is provided with through hole, via area is 1% ~ 10% of cylindrical shell cross-sectional area, and the inclination angle of taper cone barrel sidewall and horizontal plane is 20 ~ 70 °, and the maximum outside diameter of the first aeroscopic plate is less than the internal diameter of cylindrical shell correspondence position.
In the present invention, described first Inner eycle sleeve pipe is tubulose, and bore is 60% ~ 90% of cylinder internal diameter.
In the present invention, described second aeroscopic plate is circular cone tubular, and taper cone barrel tip upward, and tip is provided with through hole, and via area is 0.1 ~ 5% of cylindrical shell cross-sectional area, and the inclination angle of taper cone barrel sidewall and horizontal plane is 20 ~ 70 °.
In the present invention, described first reflection cone and the second reflection cone are circular cone tubular, and down, taper cone barrel sidewall and horizontal plane inclination angle scope are positive and negative 20 degree ~ 70 degree in taper cone barrel tip.
In the present invention, described second Inner eycle sleeve is tubulose, and bore is 10% ~ 50% of cylinder internal diameter.
In the present invention, second mud guiding plate is circular cone tubular, and taper cone barrel tip upward, tip is provided with through hole, via area is 0.1% ~ 5% of cylindrical shell cross-sectional area, the inclination angle of taper cone barrel sidewall and horizontal plane is 20 ~ 70 °, and taper cone barrel sidewall is overlapping with collection chamber sidewall sections, and the maximum outside diameter of the second mud guiding plate is less than the internal diameter of cylindrical shell correspondence position.
In the present invention, described collection chamber bottom is taper gas bucket, and upward and be provided with through hole and be communicated with biogas fairlead, collection chamber top is cylindrical, square, conical or polygonal pyramid shape in tip.
In the present invention, described gas solid separation ring flat-plate is circular cone tubular, and taper cone barrel tip down, and tip is provided with through hole, and via area is 1% ~ 10% of pond cross-sectional area, and the inclination angle of taper cone barrel sidewall and horizontal plane is 20 ~ 70 °.
In the present invention, described chemical feed pipe is used for adding medicament, regulates pH value and basicity in reactor.Outside, chemical feed pipe pond is arranged with inlet valve.
Backflow water inlet pipe described in the present invention, what produce for the follow-up aerobic treatment technique that refluxes contains nitrate wastewater.Backflow outside, water inlet pipe pond is arranged with inlet valve.
Advantage of the present invention is:
1, make full use of biogas rising kinetic energy, drive the liquid of three reaction zones to flow.Particularly two inner circulation zone, form air lift Inner eycle stream, add the turbulent fluctuation of waste water, reduce viscosity to the impact of waste water mass transfer, improve biochemical reaction efficiency.
2, hydrolysis acidification, being separated of methane phase and anoxic denitrogenation is vertically more easily being defined, can inject pH regulating agent by chemical feed pipe, when acidifying occurs in complete mixed zone, still can control the first inner circulation zone is that pH is neutral, form vertical diphasic anaerobic environment, improve reaction efficiency.The return duct follow-up aerobic biochemical reaction of injecting containing nitrate produce containing nitrate wastewater, carry out denitrification in the second inner circulation zone, the effect of denitrogenation can be played.
The solid-liquid that 3, can improve reactor retains efficiency.Because reactor is vertically divided into four parts, can promote that heavy granule sludge rests on reactor lower part.And biogas is due to after multistage collection, the possibility excessive by gap reduces greatly, avoids the turbulent fluctuation of solid-liquid displacement zone liquid, improves solid-liquid separation effect.
Detailed description of the invention
According to following embodiment, the present invention may be better understood.But those skilled in the art will readily understand, the content described by embodiment only for illustration of the present invention, and should can not limit the present invention described in detail in claims yet.
As shown in Figure 1, the invention discloses a kind of high efficiency anaerobic reactor for the process of fuel ethanol wastewater secondary anaerobic, comprise cylindrical shell 1, in cylindrical shell by lower from be divided into four regions, be complete mixed zone A, the first inner circulation zone B, the second inner circulation zone C and solid-liquid displacement zone D respectively; Water inlet water distributor 16, first mud guiding plate 2 is set in described complete mixed zone from the bottom to top, and the first aeroscopic plate 3; Described first inner circulation zone arranges the first Inner eycle sleeve 4, second aeroscopic plate 5 from the bottom to top, and the first reflection cone 6; Described second inner circulation zone arranges the second Inner eycle sleeve 7, second mud guiding plate 8, second reflection cone 9, collection chamber 10 from the bottom to top, and the biogas fairlead 13 at connected set air chamber 10 top; Gas solid separation ring flat-plate 11 and downflow weir 12 are set from the bottom to top, wherein downflow weir 12 external connection row water pipe 14, externally connected exhaust pipe 15 on the cylinder lateral wall below gas solid separation ring flat-plate 11 in described solid-liquid displacement zone.Described cylindrical shell cross section is circular or rectangle.Described first mud guiding plate is circular cone tubular, and upward, taper cone barrel sidewall and horizontal plane inclination angle scope are 20 degree ~ 70 degree in taper cone barrel tip.Described first aeroscopic plate is circular cone tubular, and taper cone barrel tip down, and tip is provided with through hole, and the inclination angle of taper cone barrel sidewall and horizontal plane is 20 ~ 70 °, and the maximum outside diameter of the first aeroscopic plate is less than the internal diameter of cylindrical shell correspondence position.Described first Inner eycle sleeve pipe is tubulose, and bore is 60% ~ 90% of cylinder internal diameter.Described second aeroscopic plate is circular cone tubular, and taper cone barrel tip upward, and tip is provided with through hole, and via area is 0.1 ~ 5% of cylindrical shell cross-sectional area, and the inclination angle of taper cone barrel sidewall and horizontal plane is 20 ~ 70 °.Described first reflection cone and the second reflection cone are circular cone tubular, and down, taper cone barrel sidewall and horizontal plane inclination angle scope are 20 degree ~ 70 degree in taper cone barrel tip.Described second Inner eycle sleeve is tubulose, and bore is 10% ~ 50% of cylinder internal diameter.Second mud guiding plate is circular cone tubular, and taper cone barrel tip upward, tip is provided with through hole, and the inclination angle of taper cone barrel sidewall and horizontal plane is 20 ~ 70 °, taper cone barrel sidewall is overlapping with collection chamber sidewall sections, and the maximum outside diameter of the second mud guiding plate is less than the internal diameter of cylindrical shell correspondence position.Described collection chamber bottom is taper gas bucket, and upward and be provided with through hole and be communicated with biogas fairlead, collection chamber top is cylindrical, square, conical or polygonal pyramid shape in tip.First inner circulation zone and the second inner circulation zone are respectively equipped with chemical feed pipe and backflow water inlet pipe.
Embodiment
As shown in Figure 1, the present invention proposes a kind of novel high efficiency anaerobic reactor, comprises cylindrical shell 1, in cylindrical shell by lower from be divided into 4 sections, be respectively complete mixed zone, Inner eycle 1 district, Inner eycle 2 district and solid-liquid displacement zone.Waste water enters complete mixed zone through bottom water inlet pipe 16.There is granule sludge and floc sludge in the mud in complete mixed zone, mixes completely under being incorporated in the effect of anaerobic bacteria and produce biogas in a large number in this region.Biogas produce after by the first mud guiding plate 2 and the first aeroscopic plate 3 guide, enter the first aeroscopic plate 3 with the annular crack of cylindrical shell 1, rise along cylindrical shell and enter the annulus of the first Inner eycle sleeve 4 in Inner eycle 1 district and cylindrical shell 1, along with the gas stripping of biogas-lift, as shown by arrows in FIG., region outside the first Inner eycle sleeve 4 in Inner eycle 1 district forms ascending current, after upwelling contacts with the first reflection cone 6 with the first aeroscopic plate 5, flow to change enter the first Inner eycle sleeve 4 in the middle of formed under to stream.The lower outside again entering the first Inner eycle sleeve 4 to stream chance first aeroscopic plate 3 generation reflection.Under the promotion that the biogas continued produces, Inner eycle 1 district forms the Inner eycle of sinking in the outer upwelling of sleeve and sleeve.Good Inner eycle can strengthen the intensity of liquid turbulent flow, reduces stickiness to the impact of mass transfer.Biogas in Inner eycle 1 district by the first reflection cone 6 and the first aeroscopic plate 5 guide, as shown by arrows in FIG., in the second Inner eycle sleeve 7 entering Inner eycle 2 district, form air lift upwelling.Guide by the second mud guiding plate 8, second reflection cone 9, outside the second Inner eycle sleeve 7, form sinking, form Inner eycle.Biogas then enters collection chamber 10 through the outer row of biogas fairlead 13.Have a small amount of remaining biogas by gas solid separation ring flat-plate 11 in Inner eycle 2 district retain, through the outer row of blast pipe 15.Meanwhile, part current direction enters solid-liquid displacement zone, through downflow weir 12, the outer row of drainpipe 14.Inner eycle 1 district, Inner eycle 2 district are respectively equipped with chemical feed pipe 17 and backflow water inlet pipe 18.
Crude fuel alcohol wastewater one-level anaerobic fermentation water outlet COD8000mg/L, enter UASB reactor and this reactor respectively, after entering UASB reactor for treatment, water outlet COD is 4000mg/L, SS is 2000mg/L, this reactor water outlet COD is 2000mg/L, SS is 600mg/L.
The invention provides a kind of high efficiency anaerobic reactor for the process of fuel ethanol wastewater secondary anaerobic; the method and access of this technical scheme of specific implementation is a lot; the above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.The all available prior art of each part not clear and definite in the present embodiment is realized.

Claims (8)

1. the high efficiency anaerobic reactor for the process of fuel ethanol wastewater secondary anaerobic, it is characterized in that, comprise cylindrical shell (1), in cylindrical shell by lower from be divided into four regions, be complete mixed zone, the first inner circulation zone, the second inner circulation zone and solid-liquid displacement zone respectively;
Water inlet water distributor (16), the first mud guiding plate (2) are set in described complete mixed zone from the bottom to top, and the first aeroscopic plate (3);
Described first inner circulation zone arranges the first Inner eycle sleeve (4), the second aeroscopic plate (5) from the bottom to top, and first reflection cone (6), material declines in the first Inner eycle sleeve (4), rises in the first Inner eycle sleeve (4) outside; Chemical feed pipe (17) is provided with in first inner circulation zone;
Described second inner circulation zone arranges the second Inner eycle sleeve (7), the second mud guiding plate (8), the second reflection cone (9), collection chamber (10) from the bottom to top, and the biogas fairlead (13) at connected set air chamber (10) top, material rises in the second Inner eycle sleeve (7), declines in the second Inner eycle sleeve (7) outside; Backflow water inlet pipe (18) is provided with in second inner circulation zone;
Gas solid separation ring flat-plate (11) and downflow weir (12) are set in described solid-liquid displacement zone from the bottom to top, wherein downflow weir (12) external connection row water pipe (14), externally connected exhaust pipe (15) on the cylinder lateral wall of gas solid separation ring flat-plate (11) below;
The cross section of described cylindrical shell is circular or rectangle;
Described first mud guiding plate is circular cone tubular, and upward, taper cone barrel sidewall and horizontal plane inclination angle scope are 20 degree ~ 70 degree in taper cone barrel tip.
2. reactor according to claim 1, it is characterized in that, described first aeroscopic plate is circular cone tubular, and taper cone barrel tip down, tip is provided with through hole, via area is 1% ~ 10% of cylindrical shell cross-sectional area, and the inclination angle of taper cone barrel sidewall and horizontal plane is 20 ~ 70 °, and the maximum outside diameter of the first aeroscopic plate is less than the internal diameter of cylindrical shell correspondence position.
3. reactor according to claim 1, is characterized in that, described first Inner eycle sleeve is tubulose, and bore is 60% ~ 90% of cylindrical shell correspondence position internal diameter.
4. reactor according to claim 1, is characterized in that, described second aeroscopic plate is circular cone tubular, and taper cone barrel tip upward, tip is provided with through hole, and via area is 0.1 ~ 5% of cylindrical shell correspondence position cross-sectional area, and the inclination angle of taper cone barrel sidewall and horizontal plane is 20 ~ 70 °.
5. reactor according to claim 1, is characterized in that, described first reflection cone and the second reflection cone are circular cone tubular, and down, taper cone barrel sidewall and horizontal plane inclination angle scope are positive and negative 20 degree ~ 70 degree in taper cone barrel tip.
6. reactor according to claim 1, is characterized in that, described second Inner eycle sleeve is tubulose, and bore is 10% ~ 50% of cylindrical shell correspondence position internal diameter.
7. reactor according to claim 1, it is characterized in that, second mud guiding plate is circular cone tubular, and taper cone barrel tip upward, tip is provided with through hole, and via area is 0.1% ~ 5% of cylindrical shell cross-sectional area, and the inclination angle of taper cone barrel sidewall and horizontal plane is 20 ~ 70 °, taper cone barrel sidewall is overlapping with collection chamber sidewall sections, and the maximum outside diameter of the second mud guiding plate is less than the internal diameter of cylindrical shell correspondence position.
8. reactor according to claim 1, is characterized in that, described collection chamber is taper gas bucket, and tip upward and be provided with through hole and be communicated with biogas fairlead.
CN201410196037.6A 2014-05-09 2014-05-09 Efficient anaerobic reactor used for fuel ethanol waste water secondary anaerobic treatment Expired - Fee Related CN103922471B (en)

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CN104817231B (en) * 2015-04-17 2017-06-30 南京元凯生物能源环保工程有限公司 Aerobe waste water preliminary treatment system
CN104787878B (en) * 2015-04-17 2017-05-10 南京元凯生物能源环保工程有限公司 biological fluidized bed reactor
CN105036448A (en) * 2015-04-17 2015-11-11 南京元凯生物能源环保工程有限公司 Biological waste water treatment system
CN104986855B (en) * 2015-07-24 2018-05-18 哈尔滨工业大学 A kind of cellulose fuel ethanol waste water processing method

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