CN101885564B - Liquid circulation aerobic reactor propelled by rotary aerator and method for treating leachate in destructor plants - Google Patents
Liquid circulation aerobic reactor propelled by rotary aerator and method for treating leachate in destructor plants Download PDFInfo
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- 239000007788 liquid Substances 0.000 title claims abstract description 28
- 238000005276 aerator Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000010802 sludge Substances 0.000 claims abstract description 29
- 238000005273 aeration Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims description 25
- 239000010813 municipal solid waste Substances 0.000 claims description 15
- 238000011081 inoculation Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 238000009987 spinning Methods 0.000 claims description 4
- 241000223782 Ciliophora Species 0.000 claims description 3
- 241000700141 Rotifera Species 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 230000009182 swimming Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000011161 development Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000010865 sewage Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000001147 anti-toxic effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000005442 atmospheric precipitation Substances 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- 230000001932 seasonal effect Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention relates to a liquid circulation aerobic reactor propelled by a rotary aerator and a method for treating leachate in destructor plants, and belongs to the technical field of environmental protection purification treatment. In the invention, the lower part of the liquid circulation aerobic reactor is provided with a first aerobic reaction zone (3), the upper part is provided with a second aerobic reaction zone (4), a circulation partition (2) is arranged between the first aerobic reaction zone and the second aerobic reaction zone, the wall of the reactor on the side of the first aerobic reaction zone is provided with a water inlet (1), the wall of the reactor on the other side of the second aerobic reaction zone is provided with a water outlet (6), the surface of the upper part of the second aerobic reaction zone is provided with a rotary aerator (5), and the height of the reactor is 2-12 m. The compound cycle mode, in which the upper and lower layers are aerated at the same time and the rotary aeration on the surface propels the water body to flow, is adopted; and the average flow velocity of the water body in the reactor reaches 0.3-1 m/s. The liquid circulation aerobic treatment technique is going to increasingly substitute activated sludge process, bio-membrane process and other traditional processes, and has wide development prospects in waste leachate treatment in destructor plants.
Description
Technical field
Liquid circulation aerobic reactor that the band rotary aerator promotes and the method that is used for the processing of garbage burning factory percolate belong to the environmental purification processing technology field.
Background technology
The garbage burning factory percolate mainly contains 3 sources: 1. external moisture, the moisture that comprises Atmospheric precipitation and get into rubbish with various approach: the 2. rubbish release of rear section initial aqueous that is squeezed; 3. the rubbish moisture that includes of under anaerobism and aerobic-anaerobic microbe effect, degrading and producing.Its leachate quality characteristics are: (1) complicated component, contain multiple pollutent.Percolate is a kind of high concentrated organic wastewater of complicated component, contains the HS environomental pollution source waste water of a large amount of ammonia nitrogens, suspended substance, organism, heavy metal and pathogenic bacterium etc.(2) Pollutant levels are high. and intractability is big.Nutritive element is lacked of proper care, is lacked carbon source, particularly later stage BOD/COD value less than 0.1, thereby intractability is big.(3) composition of sewage and quantity are in time, seasonal variation is obvious; The polytropy and the difficult predictability of the water yield have been determined; Water quality also changes because of the variation of the water yield and along with the variation of pilling up time, the composition of percolate and the concentration of pollutent are also all corresponding to change.
Aerobic treatment is the important method of wastewater treatment, and to the processing of percolate, aerobic method mainly contains activated sludge process and biomembrance process, and activated sludge process comprises oxidation ditch, sequencing batch active sludge (SBR) etc.; Biomembrance process comprises biological filter, blodisc and membrane bioreactor (MBR) etc.Advantage reliable, that treatment effect is good that Wastewater Treated by Activated Sludge Process waste water has, if but nitrogen and phosphorus content is low in the waste water, and carbon-nitrogen ratio imbalance in servicely is easy to generate sludge bulking, the operation of destruction system.In addition, activated sludge process is relatively poor to the flexibility that percolate waste water quality, the water yield change, and anti impulsion load not, also needs a large amount of oxygenations, has increased the capital construction working cost.The major advantage of biomembrance process is that processing power is big, and the anti impulsion load ability is strong, and floor space is few, and the mud growing amount is few, no sludge bulking, and operational management is convenient etc.But if Pollutant levels are higher or the pre-treatment effect is undesirable in the waste water, it is higher that biomembrance process is handled the organic loading of front end, makes the oxygen supply relative deficiency, and this moment, biological contact oxidation pond was not given play to due effect, and treatment effect is undesirable.
To the problem that aerobic treatment exists in percolate at present; Research and develop a kind of anti-high COD and anti-toxic substances, the portative power that is hit is strong, processing efficiency is high, construction costs and the little aerobic treatment technology of floor space have important in theory meaning and practical value.
Summary of the invention
The purpose of this invention is to provide a kind of aerobic treatment technology of handling to the garbage burning factory percolate, the liquid circulation aerobic reactor of advantages such as providing a kind of and have that the aeration efficiency is high, the anti impulsion load ability is strong, system stability, investment and working cost are low.
Technical scheme of the present invention: a kind of liquid circulation aerobic reactor with the rotary aerator promotion; The bottom of this liquid circulation aerobic reactor is first aerobic reactor zone (3); Top is second aerobic reactor zone (4); Between first aerobic reactor zone and second aerobic reactor zone, be provided with circulation dividing plate (2); Be provided with water-in (1) in the first aerobic reactor zone wall, one side, be provided with water outlet (6), be provided with rotary aerator (5) at the upper face of second aerobic reactor zone at the second aerobic reactor zone wall opposite side.
The form that adopts rotary aerator (rotating disk or commentaries on classics brush) to promote circulates, and reactor drum water body mean flow rate can reach 0.3m/s～1m/s.
Lower leaf while aeration in the employing, surface aeration promotes water body mobile compound cycle aeration mode.
The liquid circulation aerobic reactor that described band rotary aerator promotes, it highly is 2～12m.
The liquid circulation aerobic reactor that described band rotary aerator promotes is used for the method that the garbage burning factory percolate is handled; Percolate passes through the mode of gravity flow or water pump extraction by water-in (1) influent circulation aerobic reactor; At first carry out the one-level aerobic treatment at first aerobic reactor zone (3); Percolate after treatment is guided to second aerobic reactor zone (4) through circulation dividing plate (2); Carry out secondary aerobic through rotary aerator (5) plate-spinning or brush aeration and handle, water volume flow rate is 0.3m/s～1m/s, and final outflow water is flowed out by water outlet (6);
The startup of reactor drum and operation are divided into and are three phases; Fs is the commissioning test stage of reactor drum, is 10～20 days, inoculation aerobic sludge (like the mud in the aerobic reaction pond of municipal sewage plant); The dried 2-5g/L that counts of sludge concentration in the inoculation post-reactor carries out sludge acclimatization;
Subordinate phase is a cultivation stage; Be 30～50 days, progressively improve flooding quantity, improve sludge loading 10%～30% at every turn according to the situation of mud and the removal effect of reactor drum; Guarantee that the mixed solution sludge concentration is more than 3000mg/L; The ratio of mixed liquor volatile suspended solid, MLVSS MLVSS and mixed liquor suspended solid, MLSS MLSS is 0.7～0.8, and reactor drum COD removal effect reaches more than 80%, and sludge volume index SV% is greater than 30%;
Phase III is a stable operation stage; The COD removal effect is stable; The COD clearance is stabilized in more than 80%, and dissolved oxygen content is greater than 2mg/L in the reactive system, and the water surface flow velocity forms circulation under rotary aerator promotes; Reactor drum water body mean flow rate reaches 0.3m/s～1m/s, finds to have a large amount of campanularians, wheel animalcule in the mud, reach swimming type ciliate mikrobe through the microscopic examination meeting.
Beneficial effect of the present invention:
1) system is high to the Treatment Stability of high density and deleterious organic pollutant, and the anti impulsion load ability is strong.
2) band rotation (plate-spinning or change brush) aerator promotes, and can effectively promote the thing mass transfer that contacts to substitute with phase interface, has strengthened aerobic resistance ability, the raising sewage treating efficiency.
3) in reactive system, promote through rotation (plate-spinning or commentaries on classics brush) aerator, improved oxygen utilization rate, mikrobe metabolism is fast, the sludge activity height, hydraulic detention time is short.
4) system forms liquid circulation at inside reactor, under the condition of efficient removal organic substance, has the function of denitrogenation dephosphorizing concurrently.
5) simple in structure, easy for installation, be easy to management, strengthened the waterpower operational conditions, obvious processing effect.
6) ability of processing is compared with original aerobic treatment method; Hardly degraded organic substance matter had stronger treatment effect; The processing rate of processing efficiency and contamination index all is greatly improved; The device processes efficient of unit volume is original 2-4 times, and the clearance of pollutent index improves 30%～50%.
7) aspect investment cost, handle the conversion unit and the floor space volume of same amount waste water and want little by 40%～60%, the expense of reducing investment outlay.
Southern Yangtze University utilizes this liquid circulation aerobic reactor that the percolate that the Wuxi favour joins rubbish heat power plant is handled; To the high COD of garbage burning factory percolate; The characteristics that water quality is complicated; In aerobic treatment, adopted band rotation (the changeing brush) aerobic treatment technology that aerator promotes, the water body after the anaerobic treatment has been obtained good treatment effect.Water inlet COD is about 2000mg/L～10000mg/L, and the residence time is 2 days～10 days, and water outlet COD is 300mg/L～1000mg/L, and the COD clearance is stablized more than 80% during system stable operation.This circulation aerobic treatment technology is applied to have vast potential for future development in the wastewater treatment of garbage burning factory percolate, with the application of conventional process techniques such as increasing substitute activated sludge and biomembrance process in percolate is handled.
Description of drawings
The liquid circulation aerobic reactor synoptic diagram that Fig. 1 band rotary aerator promotes, 1, water-in, 2, the circulation dividing plate, 3, first aerobic reactor zone, 4, second aerobic reactor zone, 5, rotary aerator, 6, water outlet.
Fig. 2 liquid circulation aerobic reactor is to the removal effect of percolate COD.
Fig. 3 liquid circulation aerobic reactor is to the removal effect of ammonia nitrogen in the percolate.
Embodiment
The liquid circulation aerobic reactor that the band rotary aerator promotes
The bottom of this liquid circulation aerobic reactor is first aerobic reactor zone (3); Top is second aerobic reactor zone (4); Between first aerobic reactor zone and second aerobic reactor zone, be provided with circulation dividing plate (2); Be provided with water-in (1) in the first aerobic reactor zone wall, one side, be provided with water outlet (6), be provided with rotary aerator (5) at the upper face of second aerobic reactor zone at the second aerobic reactor zone wall opposite side.
The liquid circulation aerobic reactor that described band rotary aerator promotes, it highly is 2～12m.
The liquid circulation aerobic reactor that the band rotary aerator promotes is used for the garbage burning factory leachate processing method
The startup of reactor drum and operation are divided into and are three phases; Fs is the commissioning test stage of reactor drum; Be about 10～20 days; Inoculation aerobic sludge (like the mud in the aerobic reaction pond of municipal sewage plant), the sludge concentration in the inoculation post-reactor is carried out sludge acclimatization greater than 2g/L (dewatered sludge concentration).
Subordinate phase is a cultivation stage; Be about 30～50 days, improve constantly flooding quantity, each load 10%～30% that improves according to the situation of mud and the COD removal effect of reactor drum; Guarantee that the mixed solution sludge concentration is more than 3000mg/L; The ratio of mixed liquor volatile suspended solid, MLVSS (MLVSS) and mixed liquor suspended solid, MLSS (MLSS) is 0.7～0.8, and reactor drum COD removal effect is more than 80%, and sludge volume index (SV%) is greater than 30%.
Phase III is a stable operation stage, when flooding quantity reaches designed water, forms the sludge reaction system with certain intensity in the reactor drum; The COD removal effect is stable; Be stabilized in more than 80%, dissolved oxygen content is greater than 2mg/L in the reactive system, and the water surface flow velocity promotes to form circulation at rotation (changeing brush) aerator; Reactor drum water body mean flow rate reaches 0.3m/s～1m/s, can find to exist in the mud mikrobes such as a large amount of campanularians, wheel animalcule, swimming type ciliate through microscopic examination.
Liquid circulation aerobic reactor is to the removal effect of organic substance
Southern Yangtze University utilizes this liquid circulation aerobic reactor that the percolate that the Wuxi favour joins rubbish heat power plant is handled, and the water body after the anaerobic treatment has been obtained good treatment effect.Water inlet COD is about 2000mg/L～10000mg/L, and the residence time is 2 days～10 days, and water outlet COD is 300mg/L～1000mg/L, and the COD clearance is stablized more than 80% during system stable operation.Liquid circulation aerobic reactor is as shown in Figure 2 to the removal effect of percolate COD.
Liquid circulation aerobic reactor is to the removal effect of ammonia nitrogen
This liquid circulation aerobic reactor has been obtained good treatment effect to treatment of ammonia nitrogen in the water body during the percolate of Wuxi favour couplet rubbish heat power plant is handled.Influent ammonia nitrogen is about 800mg/L～1000mg/L, and the water outlet ammonia nitrogen is 100mg/L～400mg/L, and ammonia nitrogen removal frank is stablized more than 70% during system stable operation.Liquid circulation aerobic reactor is as shown in Figure 3 to the removal effect of ammonia nitrogen in the percolate.
Claims (1)
1. the liquid circulation aerobic reactor of band rotary aerator promotion is used for the method that the garbage burning factory percolate is handled; It is characterized in that percolate through flow automatically or mode that water pump extracts by water-in (1) influent circulation aerobic reactor; At first carry out the one-level aerobic treatment at first aerobic reactor zone (3); Percolate through after the one-level aerobic treatment is guided to second aerobic reactor zone (4) through circulation dividing plate (2); Carry out secondary aerobic through rotary aerator (5) plate-spinning or brush aeration and handle, water volume flow rate is 0.3m/s～1m/s, and final outflow water is flowed out by water outlet (6);
The startup of reactor drum and operation are divided into and are that three phases, fs are the commissioning test stage of reactor drum, are 10-20 days, the inoculation aerobic sludge, and the dried 2-5g/L that counts of sludge concentration in the inoculation post-reactor carries out sludge acclimatization;
Subordinate phase is a cultivation stage; Be 30-50 days, progressively improve flooding quantity, improve sludge loading 10%-30% at every turn; Guarantee that the mixed solution sludge concentration is more than 3000mg/L; The ratio of mixed liquor volatile suspended solid, MLVSS MLVSS and mixed liquor suspended solid, MLSS MLSS is at 0.7-0.8, and reactor drum COD removal effect is more than 80%, and sludge volume index SV% is greater than 30%;
Phase III is a stable operation stage; The COD removal effect is stable; Reach the COD clearance and be stabilized in more than 80%, dissolved oxygen content is greater than 2mg/L in the reactive system, and the water surface flow velocity forms circulation under rotary aerator promotes; Reactor drum water body mean flow rate reaches 0.3m/s-1m/s, finds to have a large amount of campanularians, wheel animalcule in the mud, reach swimming type ciliate mikrobe through the microscopic examination meeting;
The bottom of the liquid circulation aerobic reactor that said band rotary aerator promotes is first aerobic reactor zone (3); Top is second aerobic reactor zone (4); Between first aerobic reactor zone and second aerobic reactor zone, be provided with circulation dividing plate (2); Be provided with water-in (1) in the first aerobic reactor zone wall, one side, be provided with water outlet (6), be provided with rotary aerator (5) at the upper face of second aerobic reactor zone at the second aerobic reactor zone wall opposite side.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2368839Y (en) * | 1998-05-27 | 2000-03-15 | 中国市政工程西南设计研究院 | Rotary aeration sewage treating apparatus |
| CN101302057A (en) * | 2008-04-29 | 2008-11-12 | 上海师范大学 | Biological film reactor for denitrification and phosphorus removal and use method thereof |
| CN101585648A (en) * | 2009-06-17 | 2009-11-25 | 江南大学 | Multi-level circulation aerobic treatment technology |
| CN201722203U (en) * | 2010-07-01 | 2011-01-26 | 江南大学 | Liquid circulation aerobic reactor driven by rotary aerator for treating percolate of garbage incineration plant |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2368839Y (en) * | 1998-05-27 | 2000-03-15 | 中国市政工程西南设计研究院 | Rotary aeration sewage treating apparatus |
| CN101302057A (en) * | 2008-04-29 | 2008-11-12 | 上海师范大学 | Biological film reactor for denitrification and phosphorus removal and use method thereof |
| CN101585648A (en) * | 2009-06-17 | 2009-11-25 | 江南大学 | Multi-level circulation aerobic treatment technology |
| CN201722203U (en) * | 2010-07-01 | 2011-01-26 | 江南大学 | Liquid circulation aerobic reactor driven by rotary aerator for treating percolate of garbage incineration plant |
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