CN105084532B - A kind of anaerobic biological treatment method of high concentrated organic wastewater - Google Patents

A kind of anaerobic biological treatment method of high concentrated organic wastewater Download PDF

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CN105084532B
CN105084532B CN201510506269.1A CN201510506269A CN105084532B CN 105084532 B CN105084532 B CN 105084532B CN 201510506269 A CN201510506269 A CN 201510506269A CN 105084532 B CN105084532 B CN 105084532B
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mud
sewage
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CN105084532A (en
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吕锡元
吕飞龙
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JiangSu SanQiang Environment Engineering Co Ltd
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Abstract

The invention provides a kind of anaerobic biological treatment method of high concentrated organic wastewater.The method achieve anaerobion to divide and be separated, have that granulating is effective, microbial biomass is high and active strong, reactor load is high and start the advantages such as fast.High reactivity mud can be retained to greatest extent, form best biological community structure, enhanced biodegradation ability, reach the object of decomposing organic matter and mud simultaneously.

Description

A kind of anaerobic biological treatment method of high concentrated organic wastewater
Technical field
The present invention relates to a kind of anaerobic biological treatment method of high concentrated organic wastewater, belong to treatment of Organic Wastewater field.
Background technology
Present stage, in high concentration hard-degraded organic waste water, technical field of sewage, because high concentration hard-degraded organic waste water has the characteristics such as Pollutant levels are high, complicated component, toxicity are large, salt is high, wastewater biodegradability difference difficulty is decomposed by the microorganisms effect.Therefore conventional method of wastewater treatment is adopted to be difficult to purify the technology and economic requirement that maybe cannot meet this kind of purification of waste water process.Along with the development of modern environment-friendly sewage treatment technology; the improvement of high concentrated organic wastewater is a Current Domestic external environment resist technology field difficult problem urgently to be resolved hurrily; how effectively, economically to solve high concentration hard-degraded organic waste water, become the problem that current field of environment engineering is the most urgent, need most solution.Anaerobic Microbiological Treatment Technology is one of important technology in treatment of Organic Wastewater.And anaerobic reactor is the core of Anaerobic Microbiological Treatment Technology.Particularly attend by the appearance of the new technologies such as UASB, EGSB, SMPA, ABR, ASBR, LARAN, novel process; anaerobism sewage disposal technology is made again to receive the concern of people, particularly along with energy dilemma, increasingly sophisticated, energy-conservation, the efficient Anaerobic Methods in Treating of water pollution become again the study hotspot of a people's new round.
Traditional anaerobic reactor comprises UASB, anaerobism filter bed, anaerobic fluidized bed etc.At present, these anaerobic reactors are widely used in wastewater treatment industry, but it is low often to occur bearing organic loading, the shortcomings such as can not bear larger impact load, operation stability is poor, and filter bed easily blocks up, and mud easily runs off, and reactor volume is large, difficult in maintenance.The IC anaerobic reactor of development in recent years, EGSB anaerobic reactor, UASB obtains some and breaks through and solve some problems.But; still there are some problems in this kind of modified version anaerobic reactor; comprise: (1) process, containing granule sludge easy fouling during the waste water such as suspended substance, calcium, magnesium, causes reactor plugs and processing efficiency sharply to decline, again adds active sludge after need shutting down cleaning time serious.(2) form internal recycle difficulty when starting, start time is long, and easily assembles a large amount of mud scum under pneumatic trough, blocking pneumatic trough, is difficult to maintain stable efficient lifting.(3) when processing containing the organic waste water of toxic substance, in traditional homogenous anaerobic reactor, methanogen floras directly contacts toxic substance, and its multiplication rate, usually lower than decline speed, causes anaerobic treatment process can not keep long-term efficient.(4) triphase separator effectively can not realize three phase separation under high flow velocities at present, and anaerobic reactor easily occurs that mud seriously runs off.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned defect, provides a kind of anaerobic biological treatment method of high concentrated organic wastewater.The method achieve anaerobion to divide and be separated, have that granulating is effective, microbial biomass is high and active strong, reactor load is high and start the advantages such as fast.High reactivity mud can be retained to greatest extent, form best biological community structure, enhanced biodegradation ability, reach the object of decomposing organic matter and mud simultaneously.
The technical scheme that the present invention solves the employing of its technical problem is as follows: a kind of anaerobic biological treatment method of high concentrated organic wastewater, comprises the following steps:
1) a part of waste water enters in conical shell by intake pump from bottom first liquid distributor of two-phase internal-circulation anaerobic reactor, another part is upwards entered in conical shell from bottom vertical through bottom liquid inlet arm by the second liquid distributor, two portions waste water spiral up-flow under the effect of lifter enters the acidification reaction room of anaerobic reactor, in 1/4th of the total height of acidification reaction indoor, a whipping appts is respectively installed at 1/2nd and 3/4ths places, three whipping appts orthogonal settings between any two, three whipping appts alternate runs, after separate unit whipping appts runs 5 ~ 6h, idle 2h, then continue operation 3 ~ 4h again, so repeatedly, to ensure fully contacting of sewage and mud,
2) the acidified substrate water outlet formed after the degraded of acidification reaction room mixes in retort mutually with the phegma of the buffered soln in anaerobic reactor, and adds pipeline by steam and throw acid/alkali pipeline and add steam and mode that is sour, alkali medicament and make its water outlet meet the requirement of anaerobic reactor for inflow temperature and pH value;
3) under retort water outlet promotes the effect of water pump two one-levels, after cyclone-flow water distribution uniform water distribution, enter the main reaction region of anaerobic reactor, in main reaction region, sewage fully contacts with anaerobic grain sludge, the methanogen be gathered on anaerobic grain sludge utilize biological metabolism decompose and transformation step 2) in generation acidified substrate be converted into methane thus the organic contamination in water removed from aqueous phase; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in retort along reflux pipeline; Another part sewage and mud continue to rise, and arrive the one-level triphase separator be arranged at above reflux pipeline, realize sewage, mud, being separated of biogas under the water suction effect of gas skirt impact effect with mud receiving tank; Sewage continues to rise, and is pooled to the effluent weir being arranged in one-level triphase separator top and discharges main reaction region; Biogas is entered in follow-up methane recovery device by filter pore and processes further after being collected by the gas skirt in one-level triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
4) water outlet of main reaction region is under the effect of two two-stage hoisting water pumps, enters second reaction zone by after cyclone-flow water distribution uniform water distribution; In second reaction zone, sewage contacts fully with anaerobic grain sludge, and the organic pollution materials in water, by anaerobion metabolic breakdown, is finally separated from aqueous phase with the form of biogas; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in the suction line of two-stage hoisting water pump along reflux pipeline; Another part sewage and mud continue to rise, and realize the separation of sewage, mud, biogas under the effect being arranged at the secondary triphase separator above reflux pipeline; Sewage continues to rise, and is pooled to the effluent weir being arranged in secondary triphase separator top and discharges second reaction zone; Biogas enters in follow-up methane recovery device and processes further after being collected by the gas skirt in secondary triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
5) water outlet of second reaction zone enters water shoot by after the rectification of zig-zag overflow weir, and a part enters liquid distributor by return line, again enters acidification reaction room, and another part is discharged by anaerobic reactor top and entered next processing unit.
Preferably, the cylindrical shell of the two-phase internal-circulation anaerobic reactor used in the method is that the steel cut by polylith are welded to each other and form, then within it outside surface carries out rotproofing, then each accessory in two-phase internal-circulation anaerobic reactor is assembled, assemble and rear service check and debugging have been carried out to this two-phase internal-circulation anaerobic reactor, finally come into operation.
In above-mentioned either a program preferably, step 1) in the first liquid distributor be made up of each three water shoots of upper and lower two-layer equidistant arrangement; Two water shoots that second liquid distributor is equidistantly arranged by individual layer form.
In above-mentioned either a program preferably, step 1) in acidification reaction room hydraulic detention time control at 1.8 ~ 2.5h, pH value controls 5.2 ~ 5.6, and water temperature controls at 31 ~ 33 DEG C, and volumetric loading controls at 3.0 ~ 3.5kgCOD/ (m 3d).
In above-mentioned either a program preferably, in step 1) acidification reaction room in, complicated organism is under the effect of anerobe extracellular enzyme, first simple organism is broken down into, then these simple organism become based on acetic acid with oxidation conversion through anaerobically fermenting under the effect of acid-producing bacteria, be auxiliary voltaile fatty acid (VFA) and alcohols with propionic acid, butyric acid etc., participate in hydrolysed ferment bacterium mainly anerobe and the facultative anaerobe in this stage; Then, hydrogen-producing acetogens changes into acetic acid, H the intermediate product that the first stage except acetic acid, formic acid, methyl alcohol produces 2and CO 2.
In above-mentioned either a program preferably, described simple organic is simple carbohydrate, amino acid, lipid acid and glycerine; Described intermediate product is propionic acid, butyric acid and alcohols.
In above-mentioned either a program preferably, in step 3) main reaction region in water temperature be strict controlled in 33 ~ 34 DEG C; PH value controls 7.1 ~ 7.3; Its control of reflux ratio is 800% ~ 850%; Up-flow speed control is built in 10.5 ~ 11.5m/h on the surface; Volumetric loading controls at 22 ~ 24kgCOD/ (m 3d), COD clearance wherein reaches 78% ~ 88%.
In above-mentioned either a program preferably, in step 4) second reaction zone in water temperature control at 30 ~ 32 DEG C; PH value controls 7.0 ~ 7.2; Its control of reflux ratio is 410% ~ 460%; Up-flow speed control is built in 6.5 ~ 6.8m/h on the surface; Volumetric loading controls at 4.5 ~ 5.5kgCOD (m 3d).
In addition, also aerobic treatment device can be connected in the present invention, sewage after anaerobic reactor process imports to aerobic double settling tank by water inlet pipe under the effect of lift pump, aerating apparatus is provided with in aerobic double settling tank, aerating apparatus is circumscribed with blower fan, air enters aerating apparatus by blower fan, sewage carries out intermittent aeration in aeration reaction zone, except the nitrogen in decontaminated water in aeration process, phosphorus and BOD, at the quiescent phase of intermittent aeration, mud in sewage precipitates downwards along following current layer under the effect of self gravitation, enter the effluent stream of aerobic double settling tank to surrounding settling region, to be deposited under the effect of self gravitation at the bottom of following current layer and sloping plate deposition to pond, can overflow from effluent weir after sewage after process reaches effluent weir height, finally discharge from rising pipe.The mud part be precipitated at the bottom of aerobic double settling tank pond is back in anaerobic reactor by sludge-discharge pipe, thus maintains active mud content in anaerobic reactor under sludge reflux pumping action, and another part is discharged to the external world.
Beneficial effect of the present invention:
1. the mode stirred by internal recycle makes to obtain good mixed effect in reactor, improve mass-transfer efficiency, by controlling the control of reactor stirring velocity and inner active sludge laminar flow regime, sewage is made to present speed change up-flow state at loose floating activated sludge layer;
2. the present invention can retain high reactivity mud to greatest extent, biological degradation efficiency is high, be used in conjunction with aerobic treatment device, can using aerobic sludge as supplementing timely, the SA anaerobic sludge of continuous eliminating, form best biological community structure, enhanced biodegradation ability, reach the object of decomposing organic matter and mud simultaneously;
3. method of the present invention is for B/C than the waste water being greater than 0.2, has good degradation capability and capacity of resisting impact load; Anaerobic hydrolysis does not need to add medicament mutually, and power consumption is few, significantly can reduce working cost, also for rear end biochemistry provides favourable condition;
4. present invention achieves anaerobion to divide and be separated, have that granulating is effective, microbial biomass is high and active strong, reactor load is high and start the advantages such as fast;
5. the present invention has the advantages such as facility investment is few, processing efficiency is high, working cost is low, convenient management.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment 1
An anaerobic biological treatment method for high concentrated organic wastewater, comprises the following steps:
1) a part of waste water enters in conical shell by intake pump from bottom first liquid distributor of two-phase internal-circulation anaerobic reactor, another part is upwards entered in conical shell from bottom vertical through bottom liquid inlet arm by the second liquid distributor, two portions waste water spiral up-flow under the effect of lifter enters the acidification reaction room of anaerobic reactor, in 1/4th of the total height of acidification reaction indoor, a whipping appts is respectively installed at 1/2nd and 3/4ths places, three whipping appts orthogonal settings between any two, three whipping appts alternate runs, after separate unit whipping appts runs 5h, idle 2h, then continue again to run 4h, so repeatedly, to ensure fully contacting of sewage and mud,
2) the acidified substrate water outlet formed after the degraded of acidification reaction room mixes in retort mutually with the phegma of the buffered soln in anaerobic reactor, and adds pipeline by steam and throw acid/alkali pipeline and add steam and mode that is sour, alkali medicament and make its water outlet meet the requirement of anaerobic reactor for inflow temperature and pH value;
3) under retort water outlet promotes the effect of water pump two one-levels, after cyclone-flow water distribution uniform water distribution, enter the main reaction region of anaerobic reactor, in main reaction region, sewage fully contacts with anaerobic grain sludge, the methanogen be gathered on anaerobic grain sludge utilize biological metabolism decompose and transformation step 2) in generation acidified substrate be converted into methane thus the organic contamination in water removed from aqueous phase; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in retort along reflux pipeline; Another part sewage and mud continue to rise, and arrive the one-level triphase separator be arranged at above reflux pipeline, realize sewage, mud, being separated of biogas under the water suction effect of gas skirt impact effect with mud receiving tank; Sewage continues to rise, and is pooled to the effluent weir being arranged in one-level triphase separator top and discharges main reaction region; Biogas is entered in follow-up methane recovery device by filter pore and processes further after being collected by the gas skirt in one-level triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
4) water outlet of main reaction region is under the effect of two two-stage hoisting water pumps, enters second reaction zone by after cyclone-flow water distribution uniform water distribution; In second reaction zone, sewage contacts fully with anaerobic grain sludge, and the organic pollution materials in water, by anaerobion metabolic breakdown, is finally separated from aqueous phase with the form of biogas; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in the suction line of two-stage hoisting water pump along reflux pipeline; Another part sewage and mud continue to rise, and realize the separation of sewage, mud, biogas under the effect being arranged at the secondary triphase separator above reflux pipeline; Sewage continues to rise, and is pooled to the effluent weir being arranged in secondary triphase separator top and discharges second reaction zone; Biogas enters in follow-up methane recovery device and processes further after being collected by the gas skirt in secondary triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
5) water outlet of second reaction zone enters water shoot by after the rectification of zig-zag overflow weir, and a part enters liquid distributor by return line, again enters acidification reaction room, and another part is discharged by anaerobic reactor top and entered next processing unit.
Preferably, the cylindrical shell of the two-phase internal-circulation anaerobic reactor used in the method is that the steel cut by polylith are welded to each other and form, then within it outside surface carries out rotproofing, then each accessory in two-phase internal-circulation anaerobic reactor is assembled, assemble and rear service check and debugging have been carried out to this two-phase internal-circulation anaerobic reactor, finally come into operation.
Step 1) in the first liquid distributor be made up of each three water shoots of upper and lower two-layer equidistant arrangement; Two water shoots that second liquid distributor is equidistantly arranged by individual layer form.
Step 1) in acidification reaction room hydraulic detention time control at 1.8h, pH value controls 5.6, and water temperature controls at 31 DEG C, and volumetric loading controls at 3.5kgCOD/ (m 3d).
In step 1) acidification reaction room in, complicated organism is under the effect of anerobe extracellular enzyme, first simple organism is broken down into, then these simple organism become based on acetic acid with oxidation conversion through anaerobically fermenting under the effect of acid-producing bacteria, be auxiliary voltaile fatty acid (VFA) and alcohols with propionic acid, butyric acid etc., participate in hydrolysed ferment bacterium mainly anerobe and the facultative anaerobe in this stage; Then, hydrogen-producing acetogens changes into acetic acid, H the intermediate product that the first stage except acetic acid, formic acid, methyl alcohol produces 2and CO 2.
Described simple organic is simple carbohydrate, amino acid, lipid acid and glycerine; Described intermediate product is propionic acid, butyric acid and alcohols.
In step 3) main reaction region in water temperature be strict controlled in 33 DEG C; PH value controls 7.3; Its control of reflux ratio is 800%; Up-flow speed control is built in 11.5m/h on the surface; Volumetric loading controls at 22kgCOD/ (m 3d), COD clearance wherein reaches 88%.
In step 4) second reaction zone in water temperature control at 30 DEG C; PH value controls 7.2; Its control of reflux ratio is 410%; Up-flow speed control is built in 6.8m/h on the surface; Volumetric loading controls at 4.5kgCOD (m 3d).
Embodiment 2
An anaerobic biological treatment method for high concentrated organic wastewater, comprises the following steps:
1) a part of waste water enters in conical shell by intake pump from bottom first liquid distributor of two-phase internal-circulation anaerobic reactor, another part is upwards entered in conical shell from bottom vertical through bottom liquid inlet arm by the second liquid distributor, two portions waste water spiral up-flow under the effect of lifter enters the acidification reaction room of anaerobic reactor, in 1/4th of the total height of acidification reaction indoor, a whipping appts is respectively installed at 1/2nd and 3/4ths places, three whipping appts orthogonal settings between any two, three whipping appts alternate runs, after separate unit whipping appts runs 6h, idle 2h, then continue again to run 3h, so repeatedly, to ensure fully contacting of sewage and mud,
2) the acidified substrate water outlet formed after the degraded of acidification reaction room mixes in retort mutually with the phegma of the buffered soln in anaerobic reactor, and adds pipeline by steam and throw acid/alkali pipeline and add steam and mode that is sour, alkali medicament and make its water outlet meet the requirement of anaerobic reactor for inflow temperature and pH value;
3) under retort water outlet promotes the effect of water pump two one-levels, after cyclone-flow water distribution uniform water distribution, enter the main reaction region of anaerobic reactor, in main reaction region, sewage fully contacts with anaerobic grain sludge, the methanogen be gathered on anaerobic grain sludge utilize biological metabolism decompose and transformation step 2) in generation acidified substrate be converted into methane thus the organic contamination in water removed from aqueous phase; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in retort along reflux pipeline; Another part sewage and mud continue to rise, and arrive the one-level triphase separator be arranged at above reflux pipeline, realize sewage, mud, being separated of biogas under the water suction effect of gas skirt impact effect with mud receiving tank; Sewage continues to rise, and is pooled to the effluent weir being arranged in one-level triphase separator top and discharges main reaction region; Biogas is entered in follow-up methane recovery device by filter pore and processes further after being collected by the gas skirt in one-level triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
4) water outlet of main reaction region is under the effect of two two-stage hoisting water pumps, enters second reaction zone by after cyclone-flow water distribution uniform water distribution; In second reaction zone, sewage contacts fully with anaerobic grain sludge, and the organic pollution materials in water, by anaerobion metabolic breakdown, is finally separated from aqueous phase with the form of biogas; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in the suction line of two-stage hoisting water pump along reflux pipeline; Another part sewage and mud continue to rise, and realize the separation of sewage, mud, biogas under the effect being arranged at the secondary triphase separator above reflux pipeline; Sewage continues to rise, and is pooled to the effluent weir being arranged in secondary triphase separator top and discharges second reaction zone; Biogas enters in follow-up methane recovery device and processes further after being collected by the gas skirt in secondary triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
5) water outlet of second reaction zone enters water shoot by after the rectification of zig-zag overflow weir, and a part enters liquid distributor by return line, again enters acidification reaction room, and another part is discharged by anaerobic reactor top and entered next processing unit.
Preferably, the cylindrical shell of the two-phase internal-circulation anaerobic reactor used in the method is that the steel cut by polylith are welded to each other and form, then within it outside surface carries out rotproofing, then each accessory in two-phase internal-circulation anaerobic reactor is assembled, assemble and rear service check and debugging have been carried out to this two-phase internal-circulation anaerobic reactor, finally come into operation.
Step 1) in the first liquid distributor be made up of each three water shoots of upper and lower two-layer equidistant arrangement; Two water shoots that second liquid distributor is equidistantly arranged by individual layer form.
Step 1) in acidification reaction room hydraulic detention time control at 2.5h, pH value controls 5.2, and water temperature controls at 33 DEG C, and volumetric loading controls at 3.0kgCOD/ (m 3d).
In step 1) acidification reaction room in, complicated organism is under the effect of anerobe extracellular enzyme, first simple organism is broken down into, then these simple organism become based on acetic acid with oxidation conversion through anaerobically fermenting under the effect of acid-producing bacteria, be auxiliary voltaile fatty acid (VFA) and alcohols with propionic acid, butyric acid etc., participate in hydrolysed ferment bacterium mainly anerobe and the facultative anaerobe in this stage; Then, hydrogen-producing acetogens changes into acetic acid, H the intermediate product that the first stage except acetic acid, formic acid, methyl alcohol produces 2and CO 2.
Described simple organic is simple carbohydrate, amino acid, lipid acid and glycerine; Described intermediate product is propionic acid, butyric acid and alcohols.
In step 3) main reaction region in water temperature be strict controlled in 34 DEG C; PH value controls 7.1; Its control of reflux ratio is 850%; Up-flow speed control is built in 10.5m/h on the surface; Volumetric loading controls at 24kgCOD/ (m 3d), COD clearance wherein reaches 78%.
In step 4) second reaction zone in water temperature control at 32 DEG C; PH value controls 7.0; Its control of reflux ratio is 460%; Up-flow speed control is built in 6.5m/h on the surface; Volumetric loading controls at 5.5kgCOD (m 3d).
Embodiment 3
An anaerobic biological treatment method for high concentrated organic wastewater, comprises the following steps:
1) a part of waste water enters in conical shell by intake pump from bottom first liquid distributor of two-phase internal-circulation anaerobic reactor, another part is upwards entered in conical shell from bottom vertical through bottom liquid inlet arm by the second liquid distributor, two portions waste water spiral up-flow under the effect of lifter enters the acidification reaction room of anaerobic reactor, in 1/4th of the total height of acidification reaction indoor, a whipping appts is respectively installed at 1/2nd and 3/4ths places, three whipping appts orthogonal settings between any two, three whipping appts alternate runs, after separate unit whipping appts runs 5.5h, idle 2h, then continue again to run 3.5h, so repeatedly, to ensure fully contacting of sewage and mud,
2) the acidified substrate water outlet formed after the degraded of acidification reaction room mixes in retort mutually with the phegma of the buffered soln in anaerobic reactor, and adds pipeline by steam and throw acid/alkali pipeline and add steam and mode that is sour, alkali medicament and make its water outlet meet the requirement of anaerobic reactor for inflow temperature and pH value;
3) under retort water outlet promotes the effect of water pump two one-levels, after cyclone-flow water distribution uniform water distribution, enter the main reaction region of anaerobic reactor, in main reaction region, sewage fully contacts with anaerobic grain sludge, the methanogen be gathered on anaerobic grain sludge utilize biological metabolism decompose and transformation step 2) in generation acidified substrate be converted into methane thus the organic contamination in water removed from aqueous phase; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in retort along reflux pipeline; Another part sewage and mud continue to rise, and arrive the one-level triphase separator be arranged at above reflux pipeline, realize sewage, mud, being separated of biogas under the water suction effect of gas skirt impact effect with mud receiving tank; Sewage continues to rise, and is pooled to the effluent weir being arranged in one-level triphase separator top and discharges main reaction region; Biogas is entered in follow-up methane recovery device by filter pore and processes further after being collected by the gas skirt in one-level triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
4) water outlet of main reaction region is under the effect of two two-stage hoisting water pumps, enters second reaction zone by after cyclone-flow water distribution uniform water distribution; In second reaction zone, sewage contacts fully with anaerobic grain sludge, and the organic pollution materials in water, by anaerobion metabolic breakdown, is finally separated from aqueous phase with the form of biogas; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in the suction line of two-stage hoisting water pump along reflux pipeline; Another part sewage and mud continue to rise, and realize the separation of sewage, mud, biogas under the effect being arranged at the secondary triphase separator above reflux pipeline; Sewage continues to rise, and is pooled to the effluent weir being arranged in secondary triphase separator top and discharges second reaction zone; Biogas enters in follow-up methane recovery device and processes further after being collected by the gas skirt in secondary triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
5) water outlet of second reaction zone enters water shoot by after the rectification of zig-zag overflow weir, and a part enters liquid distributor by return line, again enters acidification reaction room, and another part is discharged by anaerobic reactor top and entered next processing unit.
The cylindrical shell of the two-phase internal-circulation anaerobic reactor used in the method is that the steel cut by polylith are welded to each other and form, then within it outside surface carries out rotproofing, then each accessory in two-phase internal-circulation anaerobic reactor is assembled, assemble and rear service check and debugging have been carried out to this two-phase internal-circulation anaerobic reactor, finally come into operation.
Step 1) in the first liquid distributor be made up of each three water shoots of upper and lower two-layer equidistant arrangement; Two water shoots that second liquid distributor is equidistantly arranged by individual layer form.
Step 1) in acidification reaction room hydraulic detention time control at 2.2h, pH value controls 5.4, and water temperature controls at 32 DEG C, and volumetric loading controls at 3.3kgCOD/ (m 3d).
In step 1) acidification reaction room in, complicated organism is under the effect of anerobe extracellular enzyme, first simple organism is broken down into, then these simple organism become based on acetic acid with oxidation conversion through anaerobically fermenting under the effect of acid-producing bacteria, be auxiliary voltaile fatty acid (VFA) and alcohols with propionic acid, butyric acid etc., participate in hydrolysed ferment bacterium mainly anerobe and the facultative anaerobe in this stage; Then, hydrogen-producing acetogens changes into acetic acid, H the intermediate product that the first stage except acetic acid, formic acid, methyl alcohol produces 2and CO 2.
Described simple organic is simple carbohydrate, amino acid, lipid acid and glycerine; Described intermediate product is propionic acid, butyric acid and alcohols.
In step 3) main reaction region in water temperature be strict controlled in 33.5 DEG C; PH value controls 7.2; Its control of reflux ratio is 820%; Up-flow speed control is built in 11m/h on the surface; Volumetric loading controls at 23kgCOD/ (m 3d), COD clearance wherein reaches 83%.
In step 4) second reaction zone in water temperature control at 31 DEG C; PH value controls 7.1; Its control of reflux ratio is 440%; Up-flow speed control is built in 6.7m/h on the surface; Volumetric loading controls at 5kgCOD (m 3d).
In addition, also can connect aerobic treatment device in the present invention, the sewage after anaerobic reactor process enters film processing system and processes under the effect of lift pump, and wherein membrane pore size is 0.3 ~ 0.4 μm, and membrane flux is 85 ~ 90L/ (m 3d), cross-flow velocity is 3.8 ~ 4.2m/s, and circular flow is 22 ~ 25: 1, and working pressure is 0.2 ~ 0.3MPa; Import to aerobic double settling tank by water inlet pipe afterwards, be provided with aerating apparatus in aerobic double settling tank, it comprises aeration pump, and is connected with threeway escape valve with a flexible pipe; Aerating apparatus is circumscribed with blower fan, air enters aerating apparatus by blower fan, sewage carries out intermittent aeration in aeration reaction zone, except nitrogen, phosphorus and the BOD in decontaminated water in aeration process, at the quiescent phase of intermittent aeration, mud in sewage precipitates downwards along following current layer under the effect of self gravitation, enter the effluent stream of aerobic double settling tank to surrounding settling region, to be deposited under the effect of self gravitation at the bottom of following current layer and sloping plate deposition to pond, can overflow from effluent weir after sewage after process reaches effluent weir height, finally discharge from rising pipe.The mud part be precipitated at the bottom of aerobic double settling tank pond is back in anaerobic reactor by sludge-discharge pipe, thus maintains active mud content in anaerobic reactor under sludge reflux pumping action, and another part is discharged to the external world.
The present invention makes to obtain good mixed effect in reactor by the mode that internal recycle stirs, improve mass-transfer efficiency, by controlling the control of reactor stirring velocity and inner active sludge laminar flow regime, sewage is made to present speed change up-flow state at loose floating activated sludge layer.The present invention can retain high reactivity mud to greatest extent, biological degradation efficiency is high, be used in conjunction with aerobic treatment device, can using aerobic sludge as supplementing timely, the SA anaerobic sludge of continuous eliminating, form best biological community structure, enhanced biodegradation ability, reach the object of decomposing organic matter and mud simultaneously.Method of the present invention than the waste water being greater than 0.2, has good degradation capability and capacity of resisting impact load for B/C; Anaerobic hydrolysis does not need to add medicament mutually, and power consumption is few, significantly can reduce working cost, also for rear end biochemistry provides favourable condition.Present invention achieves anaerobion to divide and be separated, have that granulating is effective, microbial biomass is high and the advantages such as active strong, reactor load is high and it is fast to start, facility investment is few, processing efficiency is high, working cost is low, convenient management.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention, every according in technical spirit of the present invention to any simple modification, equivalent variations that above embodiment is done, all fall within protection scope of the present invention.

Claims (6)

1. an anaerobic biological treatment method for high concentrated organic wastewater, comprises the following steps:
1) a part of waste water enters in conical shell by intake pump from bottom first liquid distributor of two-phase internal-circulation anaerobic reactor, another part is upwards entered in conical shell from bottom vertical through bottom liquid inlet arm by the second liquid distributor, two portions waste water spiral up-flow under the effect of lifter enters the acidification reaction room of anaerobic reactor, in 1/4th of the total height of acidification reaction indoor, a whipping appts is respectively installed at 1/2nd and 3/4ths places, three whipping appts orthogonal settings between any two, three whipping appts alternate runs, after separate unit whipping appts runs 5 ~ 6h, idle 2h, then continue operation 3 ~ 4h again, so repeatedly, to ensure fully contacting of sewage and mud,
2) the acidified substrate water outlet formed after the degraded of acidification reaction room mixes in retort mutually with the phegma of the buffered soln in anaerobic reactor, and adds pipeline by steam and throw acid/alkali pipeline and add steam and mode that is sour, alkali medicament and make its water outlet meet the requirement of anaerobic reactor for inflow temperature and pH value;
3) under retort water outlet promotes the effect of water pump two one-levels, after cyclone-flow water distribution uniform water distribution, enter the main reaction region of anaerobic reactor, in main reaction region, sewage fully contacts with anaerobic grain sludge, the methanogen be gathered on anaerobic grain sludge utilize biological metabolism decompose and transformation step 2) in generation acidified substrate be converted into methane thus the organic contamination in water removed from aqueous phase; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in retort along reflux pipeline; Another part sewage and mud continue to rise, and arrive the one-level triphase separator be arranged at above reflux pipeline, realize sewage, mud, being separated of biogas under the water suction effect of gas skirt impact effect with mud receiving tank; Sewage continues to rise, and is pooled to the effluent weir being arranged in one-level triphase separator top and discharges main reaction region; Biogas is entered in follow-up methane recovery device by filter pore and processes further after being collected by the gas skirt in one-level triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
4) water outlet of main reaction region is under the effect of two two-stage hoisting water pumps, enters second reaction zone by after cyclone-flow water distribution uniform water distribution; In second reaction zone, sewage contacts fully with anaerobic grain sludge, and the organic pollution materials in water, by anaerobion metabolic breakdown, is finally separated from aqueous phase with the form of biogas; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in the suction line of two-stage hoisting water pump along reflux pipeline; Another part sewage and mud continue to rise, and realize the separation of sewage, mud, biogas under the effect being arranged at the secondary triphase separator above reflux pipeline; Sewage continues to rise, and is pooled to the effluent weir being arranged in secondary triphase separator top and discharges second reaction zone; Biogas enters in follow-up methane recovery device and processes further after being collected by the gas skirt in secondary triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
5) water outlet of second reaction zone enters water shoot by after the rectification of zig-zag overflow weir, and a part enters liquid distributor by return line, again enters acidification reaction room, and another part is discharged by anaerobic reactor top and entered next processing unit.
2. the anaerobic biological treatment method of high concentrated organic wastewater according to claim 1, it is characterized in that the cylindrical shell of the two-phase internal-circulation anaerobic reactor used in the method is that the steel cut by polylith are welded to each other and form, then within it outside surface carries out rotproofing, then each accessory in two-phase internal-circulation anaerobic reactor is assembled, assemble and rear service check and debugging have been carried out to this two-phase internal-circulation anaerobic reactor, finally come into operation.
3. the anaerobic biological treatment method of high concentrated organic wastewater according to claim 1 and 2, is characterized in that step 1) in the first liquid distributor be made up of each three water shoots of upper and lower two-layer equidistant arrangement; Two water shoots that second liquid distributor is equidistantly arranged by individual layer form.
4. the anaerobic biological treatment method of high concentrated organic wastewater according to claim 3, it is characterized in that step 1) in acidification reaction room hydraulic detention time control at 1.8 ~ 2.5h, pH value controls 5.2 ~ 5.6, water temperature controls at 31 ~ 33 DEG C, and volumetric loading controls at 3.0 ~ 3.5kgCOD/ (m 3d).
5. the anaerobic biological treatment method of high concentrated organic wastewater according to claim 1, is characterized in that in step 3) main reaction region in water temperature be strict controlled in 33 ~ 34 DEG C; PH value controls 7.1 ~ 7.3; Its control of reflux ratio is 800% ~ 850%; Up-flow speed control is built in 10.5 ~ 11.5m/h on the surface; Volumetric loading controls at 22 ~ 24kgCOD/ (m 3d), COD clearance wherein reaches 78% ~ 88%.
6. the anaerobic biological treatment method of high concentrated organic wastewater according to claim 5, is characterized in that in step 4) second reaction zone in water temperature control at 30 ~ 32 DEG C; PH value controls 7.0 ~ 7.2; Its control of reflux ratio is 410% ~ 460%; Up-flow speed control is built in 6.5 ~ 6.8m/h on the surface; Volumetric loading controls at 4.5 ~ 5.5kgCOD (m 3d).
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Denomination of invention: Anaerobic biological treatment method of high-concentration organic wastewater

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