CN103601296A - D-A2/O sewage treatment reactor with two-phase anaerobic-anoxic alternate operation - Google Patents
D-A2/O sewage treatment reactor with two-phase anaerobic-anoxic alternate operation Download PDFInfo
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- 239000010865 sewage Substances 0.000 title claims abstract description 13
- 230000020477 pH reduction Effects 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 claims abstract description 24
- 239000010802 sludge Substances 0.000 claims abstract description 23
- 238000010992 reflux Methods 0.000 claims description 17
- 230000007062 hydrolysis Effects 0.000 claims description 16
- 238000006460 hydrolysis reaction Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 25
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 25
- 239000011574 phosphorus Substances 0.000 abstract description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 11
- 241000894006 Bacteria Species 0.000 description 10
- 229920000388 Polyphosphate Polymers 0.000 description 8
- 229920000037 Polyproline Polymers 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 239000001205 polyphosphate Substances 0.000 description 8
- 235000011176 polyphosphates Nutrition 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 241000252229 Carassius auratus Species 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000005446 dissolved organic matter Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004912 1,5-cyclooctadiene Substances 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
-
- 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
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
-
- 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
- C02F3/308—Biological phosphorus removal
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to a D-A2/O sewage treatment reactor with two-phase anaerobic-anoxic alternate operation. The is characterized by comprising a water tank (1), an acidification tank (2), an anaerobic tank (4), an anoxic tank (5), an aerobic tank (7) and a secondary sedimentation tank (9). The D-A2/O reactor provided by the invention has the technical advantages of high nitrogen and phosphorus removal effect, stable effluent quality, small excess sludge yield and the like.
Description
Technical field
Patent of the present invention relates to a kind of sewage-treating reactor.
Background technology
A
2/ O and SBR are the common technologies with higher denitrogenation dephosphorization effect.Comparatively speaking, SBR is restricted the development of this technique because of it compared with problems such as high automatization control and intermittent water outlets.Tradition A
2/ O technique denitrogenation dephosphorizing principle is also uncomplicated, and this technique of the anaerobism forming through traditional active sludge improvement, anoxic, aerobic three-stage process can not only effectively be removed organism, also can synchronous denitrification dephosphorizing.But existing A
2/ O also exists denitrogenation dephosphorizing efficiency to be difficult to the problem further significantly promoting, and traces it to its cause two: (1) exists the carbon source race problem of denitrogenation and dephosphorization; (2) exist microorganism to release phosphorus and inhale the lower problem of phosphorus ability.Make a concrete analysis of as follows:
Achievement in research in the past shows, A
2in/O technique, the denitrification of anoxic section is the main path of denitrogenating, and its key is in anoxic section, whether there is sufficient carbon source; Meanwhile, polyP bacteria also needs to absorb easily biodegradable organics in anaerobism section and releases phosphorus reaction, can be in aerobic section excessive suction phosphorus and reach the object of dephosphorization.Carbon source in water inlet lacks, i.e. water inlet is for low C/N is when low, A
2/ O technique denitrogenation dephosphorizing carbon source race problem is particularly evident.From technical process, polyP bacteria almost consumes into the easy organism of degraded of the overwhelming majority in water in the phosphorus effect of releasing of anaerobism section, thus anoxic section only surplus a small amount of at a slow speed or the organism of difficult degradation is difficult to meet denitrification denitrogenation effect and cause denitrification effect poor.From same anaerobism (anoxic) section, denitrifying bacteria has precedence over polyP bacteria and utilizes organic carbon source to carry out denitrogenation, thereby cause polyP bacteria to release phosphorus effect, reduces, and its result must cause the suction phosphorus effect of aerobic section not remarkable.Therefore, existing A
2the carbon source race problem of/O technique becomes the restrictive factor of this technique denitrogenation dephosphorizing.
Existing A
2/ O technique denitrogenation dephosphorizing and reflux ratio are closely related.Too low reflux ratio difficulty has desirable denitrogenation dephosphorizing effect, but too high reflux ratio is also detested because causing, (lacking) oxygen section DO excessive concentration is difficult to be had higher denitrification effect and release phosphorus ability.Therefore, existing A
2/ O technique is all controlled mud, muddy water mixed solution reflux ratio in lower value, and it releases phosphorus and suction phosphorus ability is less.
If can take measures to solve A
2the competition of carbon source in/O process operation process, and significantly promote it and release phosphorus and inhale phosphorus ability, the denitrogenation dephosphorizing effect of this technique can greatly be improved.Based on this kind of viewpoint, this research and design D-A
2/ O reactor, its feature is as follows:
(1) from the constructional feature of reactor, D-A
2the constructional feature of/O is to have designed independent two-phase sludge reflux system and nitrification liquid return-flow system, the mode of two-phase alternate run has solved the effect that the DO bringing in nitrification liquid in anoxic pond affects denitrification denitrogenation to a great extent, thereby in assurance system, the reflux ratio R of the larger flow of efficient denitrification usefulness is key factor.Its result must guarantee that system wherein one when normally intake and keeping releasing phosphorus and denitrogenation mutually, carries out the phosphorus effect of releasing and the sufficient denitrogenation of excess in the quiet excessive anoxic of a phase factor of having a rest.The phosphorus effect of releasing of anaerobism section polyP bacteria excess must cause polyP bacteria to inhale phosphorus in the excess of aerobic section, finally the more significant dephosphorization effect of the system that realizes with the form of discharge excess sludge.This should be D-A
2the most critical factor of/O reactor high-efficient denitrification and dephosphorization.
(2) from the process features of reactor, the present invention is in A
2integrated hydrolysis acidification pool before/O.Most of insoluble organism in Hydrolysis Acidification in sewage and larger molecular organics can be degraded to dissolved organic matter and small organic molecule under acidication effect, can effectively avoid follow-up A
2the problem of/O carbon source deficiency.This is D-A
2the another key factor of/O reactor high-efficient denitrification and dephosphorization.
(3) from the operation characteristic of reactor, D-A
2/ O reactor is integrated A
2the principle of/O technique and SBR technique.As a whole, D-A
2/ O reactor has significant A
2/ O sludge reflux system and nitrification liquid backflow feature; From local, say D-A
2/ O anaerobism, anoxic pond alternate run mode have the stages such as the SBR of being similar to technique water inlet phase, reaction period, precipitation phase and draining spoil disposal phase.This is D-A
2the possibility factor of/O reactor high-efficient denitrification and dephosphorization, need further probe into.
Test run result by 12 wheat harvesting periods shows, D-A
2/ O reactor is stable and have higher wastewater treatment efficiency, and the removal effect of its COD, nitrogen and phosphorus is far above existing A
2/ O and SBR technique.
D-A of the present invention
2/ O reactor has efficient Nitrogen/Phosphorus Removal, stable effluent quality, minimum technical superioritys such as excess sludge yield, this is cannot replace other sewage disposal technologies short durations, and this also has the promotion and application that make this technology long-term market and ensures.D-A
2the research of/O reactor has not yet to see report, real in pioneering.
Summary of the invention
The object of patent of the present invention is to provide a kind of D-A of diphasic anaerobic anoxic alternate run
2o sewage-treating reactor, is characterized in that comprising water tank (1), acidification pool (2), anaerobic pond (4), anoxic pond (5), Aerobic Pond (7) and second pond (9).Sanitary sewage in described water tank (1) is acidified pond (2) successively, anaerobic pond (4), anoxic pond (5), Aerobic Pond (7) and second pond (9) obtain water purification from water outlet (15), and mud is got rid of by the mud discharging mouth (14) of second pond (9).
In described acidification pool (2), have suspension biofilm filler (3), anaerobic pond (4) and anoxic pond (5) all have agitator (6), have aeration head (8) in described Aerobic Pond (7).
Between described Aerobic Pond (7) and anoxic pond (5), there is mixed-liquor return pump (11), muddy water mixed solution is back to anoxic pond (5); Between second pond (9) and anaerobic pond (4), there is sludge reflux pump (13), by sludge reflux to anaerobic pond (4).
Described Aerobic Pond (7) has vacuum pump (12).
Described acidification pool (2), anaerobic pond (4), anoxic pond (5) and Aerobic Pond (7) all there is mud discharging mouth (10).
Described acidification pool (2), anaerobic pond (4), anoxic pond (5) all has two-phase.
The volume ratio V of described hydrolysis acidification pool, anaerobic pond, anoxic pond and each chamber of Aerobic Pond
hydrolysis acidification pool: V
anaerobic pond: V
anoxic pond: V
aerobic Pond=(1-2): (1-2): (1-2): (2-4).Wherein the concrete size of hydrolysis acidification pool is respectively: length * wide * height=250 * 320 * 800 (mm of unit); Anaerobic pond length * wide * height=250 * 250 * 800 (mm of unit); Anoxic pond: length * wide * height=250 * 320 * 800 (mm of unit); Aerobic Pond: length * wide * height=450 * 500 * 800 (mm of unit); Described second pond (9) has a trunk portion (9-1) and centrum portion (9-2), the trunk portion diameter D=300mm of its second pond, high h=600mm, cone portion outside diameter D
1=300mm end diameter D
2=150mm, the indoor active sludge of having tamed that all drops into of every lattice.
Its technological principle is: water inlet is through constant flow pump to the hydrolysis acidification pool that elastic solid filler is set, and acidication bacterium is small organic molecule and easily biodegradable organics by the larger molecular organics in sewage and insoluble organic matter degradation; Then flow in A phase anaerobic pond and anoxic pond, the nitrification liquid refluxing with Aerobic Pond, settling tank, mud connect to stir at stirrer makes active sludge microorganism fully contact and organic matter degradation, denitrogenation occur and release phosphorus reaction with the pollutent matrix in sewage; The muddy water mixed solution of anoxic pond flow to Aerobic Pond and inhales phosphorus reaction.Described acidification pool (2), anaerobic pond (4), anoxic pond (5) and all there is two-phase, when wherein one during in running status, another is in the quiet state of having a rest.During next alternate run state, contrary.Whole process of the test, two-phase successively alternate run has realized dirty water purification.
D-A described in this patent
2o represents diphasic anaerobic anoxic alternate-operation A
2/ O.
Beneficial effect:
1. integrated acidication section to be to meet the carbon source of denitrogenation dephosphorizing, and the reactor that makes design is saved working cost not needing additionally to add carbon source; 2. designed independent two-phase sludge reflux system and nitrification liquid return-flow system, adopted independent diphasic anaerobic/anaerobism alternate run mode and improve denitrogenation dephosphorizing effect.When applying, be easier to realize the technical transform of this achievement in research.Only need be at existing A
2on the basis of/O technique, increase a phase hydrolysis acidification pool, anaerobic pond and anoxic pond, can realize D-A
2the establishment of/O reactor, the significantly improving of its denitrogenation dephosphorizing effect.
From the constructional feature of reactor, D-A
2the constructional feature of/O is to have designed independent two-phase sludge reflux system and nitrification liquid return-flow system, the mode of two-phase alternate run has solved the effect that the DO bringing in nitrification liquid in anoxic pond affects denitrification denitrogenation to a great extent, thereby in assurance system, the reflux ratio R of the larger flow of efficient denitrification usefulness is key factor.Its result must guarantee that system wherein one when normally intake and keeping releasing phosphorus and denitrogenation mutually, carries out the phosphorus effect of releasing and the sufficient denitrogenation of excess in the quiet excessive anoxic of a phase factor of having a rest.The phosphorus effect of releasing of anaerobism section polyP bacteria excess must cause polyP bacteria to inhale phosphorus in the excess of aerobic section, finally the more significant dephosphorization effect of the system that realizes with the form of discharge excess sludge.This should be D-A
2the most critical factor of/O reactor high-efficient denitrification and dephosphorization.
From the process features of reactor, the present invention is in A
2integrated hydrolysis acidification pool before/O.Most of insoluble organism in Hydrolysis Acidification in sewage and larger molecular organics can be degraded to dissolved organic matter and small organic molecule under acidication effect, can effectively avoid follow-up A
2the problem of/O carbon source deficiency.This is D-A
2a key factor of/O reactor high-efficient denitrification and dephosphorization.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is reaction unit system schematic of the present invention;
Fig. 2 is process flow sheet of the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.
A kind of D-A of diphasic anaerobic anoxic alternate run
2o sewage-treating reactor, it is characterized in that comprising water tank (1), acidification pool (2), anaerobic pond (4), anoxic pond (5), Aerobic Pond (7) and second pond (9), sanitary sewage in described water tank (1) passes through pump acidified pond (2) successively, anaerobic pond (4), anoxic pond (5), Aerobic Pond (7) and second pond (9) obtain water purification from water outlet (15), and mud is got rid of by the mud discharging mouth (14) of second pond (9).
In described acidification pool (2), have suspension biofilm filler (3), anaerobic pond (4) and anoxic pond (5) all have agitator (6), have aeration head (8) in described Aerobic Pond (7).
Between described Aerobic Pond (7) and anoxic pond (5), there is mixed-liquor return pump (11), phegma is back to anoxic pond (5); Between second pond (9) and anaerobic pond (4), there is sludge reflux pump (13), by sludge reflux to anaerobic pond (4).
Described Aerobic Pond (7) has vacuum pump (12)
Described acidification pool (2), anaerobic pond (4), the homonymy of anoxic pond (5) and Aerobic Pond (7) all has mud discharging mouth (10).
Described acidification pool (2), anaerobic pond (4), anoxic pond (5) and second pond (in Fig. 2, A is a phase, and B is a phase).
The volume ratio V of described hydrolysis acidification pool, anaerobic pond, anoxic pond and each chamber of Aerobic Pond
hydrolysis acidification pool: V
anaerobic pond: V
anoxic pond: V
aerobic Pond=1.3:1:1:3.72.Wherein the concrete size of hydrolysis acidification pool is respectively: length * wide * height=250 * 320 * 800 (mm of unit); Anaerobic pond length * wide * height=250 * 250 * 800 (mm of unit); Anoxic pond: length * wide * height=250 * 320 * 800 (mm of unit); Aerobic Pond: length * wide * height=450 * 500 * 800 (mm of unit); Described second pond (9) has a trunk portion (9-1) and centrum portion (9-2), the trunk portion diameter D=300mm of its second pond, high h=600mm, cone portion outside diameter D
1=300mm end diameter D
2=150mm, the indoor active sludge of having tamed that all drops into of every lattice.
Sewage running condition in reactor is: sewage enters anaerobic pond lattice chamber together with the returned sluge from second pond after the acidication of hydrolysis acidification pool lattice chamber, goes out to flow sewage and can enter anoxic pond lattice chamber with the mixed solution from Aerobic Pond again; Through anaerobic/anoxic pond, stir fully and mix after biochemical reaction, muddy water mixed solution flow to Aerobic Pond; Aerobic Pond part mixed-liquor return is to anoxic pond, and another part is gone out to flow in second pond by overflow weir and carries out mud-water separation, and supernatant liquor is flowed out by effluent weir, and sludge part is back to anaerobic pond, outside excess sludge discharge system.When system one is moved with above-mentioned running status, another is mutually in the quiet state of having a rest.Whole process of the test, two-phase alternate run has been realized processing and the dirty water purification of pollutent.
Within 12 months, lab scale test-results refers to table 1.
Table 1 test-results
As shown in Table 1, D-A of the present invention
2/ O reactor stable effluent quality is marked between surface water environment quality V class at one-level A.Ecological box cultivation of ornamental goldfish is set in reactor water side in process of the test, whether stable further to verify effluent quality by the surviving rate of observation goldfish.The observed result of 2 months shows, views and admires goldfish surviving rate up to more than 90%.
Test conditions: water temperature=15-24 ℃; Hydraulic detention time HRT=6-10h; Return current ratio of the mixed liquid R=200%-400% (Aerobic Pond sludge concentration MLSS=2500-3500mg/L); Return sludge ratio r=110%-150% (returned sluge concentration MLSS=4000-6800mg/L); Two-phase alternate run time T=0.5h-3h.
Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (6)
1. the D-A of a diphasic anaerobic anoxic alternate run
2/ O sewage-treating reactor, it is characterized in that comprising water tank (1), acidification pool (2), anaerobic pond (4), anoxic pond (5), Aerobic Pond (7) and second pond (9), sanitary sewage in described water tank (1) passes through pump acidified pond (2) successively, anaerobic pond (4), anoxic pond (5), Aerobic Pond (7) and second pond (9) obtain water purification from water outlet (15), and mud is got rid of by the mud discharging mouth (14) of second pond (9);
In described acidification pool (2), have suspension biofilm filler (3), anaerobic pond (4) and anoxic pond (5) all have agitator (6), have aeration head (8) in described Aerobic Pond (7).
2. the D-A of a kind of diphasic anaerobic anoxic alternate run as claimed in claim 1
2/ O sewage-treating reactor, is characterized in that having mixed-liquor return pump (11) between described Aerobic Pond (7) and anoxic pond (5), and muddy water mixed solution is back to anoxic pond (5); Between second pond (9) and anaerobic pond (4), there is sludge reflux pump (13), by activity sludge reflux to anaerobic pond (4).
3. the D-A of a kind of diphasic anaerobic anoxic alternate run as claimed in claim 1
2/ O sewage-treating reactor, is characterized in that described Aerobic Pond (7) has vacuum pump (12).
4. the D-A of a kind of diphasic anaerobic anoxic alternate run as claimed in claim 1
2/ O sewage-treating reactor, is characterized in that described acidification pool (2), anaerobic pond (4), and anoxic pond (5) and Aerobic Pond (7) all have mud discharging mouth (10).
5. the D-A of a kind of diphasic anaerobic anoxic alternate run as claimed in claim 4
2/ O sewage-treating reactor, is characterized in that described acidification pool (2), anaerobic pond (4), and anoxic pond (5) all has two-phase.
6. the D-A of a kind of diphasic anaerobic anoxic alternate run as claimed in claim 5
2/ O sewage-treating reactor, is characterized in that the volume ratio V of described hydrolysis acidification pool, anaerobic pond, anoxic pond and each chamber of Aerobic Pond
hydrolysis acid change pond: V
anaerobic pond: V
anoxic pond: V
aerobic Pond=(1-2): (1-2): (1-2): (2-4).Wherein the concrete size of hydrolysis acidification pool is respectively: length * wide * height=250 * 320 * 800 (mm of unit); Anaerobic pond length * wide * height=250 * 250 * 800 (mm of unit); Anoxic pond: length * wide * height=250 * 320 * 800 (mm of unit); Aerobic Pond: length * wide * height=450 * 500 * 800 (mm of unit); Described second pond (9) has a trunk portion (9-1) and centrum portion (9-2), the trunk portion diameter D=300mm of its second pond, high h=600mm, cone portion outside diameter D
1=300mm end diameter D
2=150mm, the indoor active sludge of having tamed that all drops into of every lattice.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310566833.XA CN103601296B (en) | 2013-11-15 | 2013-11-15 | A kind of D-A of diphasic anaerobic anoxic alternate run 2/ O sewage-treating reactor |
| PCT/CN2014/000764 WO2015070512A1 (en) | 2013-11-15 | 2014-08-13 | D-a2/o sewage treatment reactor with two series of anaerobic-anoxic alternate operations |
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| CN201310566833.XA CN103601296B (en) | 2013-11-15 | 2013-11-15 | A kind of D-A of diphasic anaerobic anoxic alternate run 2/ O sewage-treating reactor |
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| WO2015070512A1 (en) * | 2013-11-15 | 2015-05-21 | 玉溪师范学院 | D-a2/o sewage treatment reactor with two series of anaerobic-anoxic alternate operations |
| CN104761054A (en) * | 2015-03-19 | 2015-07-08 | 叶长兵 | Improvement and upgrading method of AO sewage treatment technology |
| CN105254014A (en) * | 2015-11-20 | 2016-01-20 | 江苏合一水业有限公司 | Multifunctional sewage treatment pond |
| CN105502824A (en) * | 2015-12-25 | 2016-04-20 | 中铁城市规划设计研究院有限公司 | Intensive integration type small sewage treatment station |
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| CN110759592A (en) * | 2019-11-05 | 2020-02-07 | 天津中冀源环保科技有限公司 | Hydrolytic acidification + A without external carbon source2/O2In a sewage treatment method |
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| CN105502824A (en) * | 2015-12-25 | 2016-04-20 | 中铁城市规划设计研究院有限公司 | Intensive integration type small sewage treatment station |
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| Publication number | Publication date |
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| CN103601296B (en) | 2015-11-25 |
| WO2015070512A1 (en) | 2015-05-21 |
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