CN108128990A - Garbage percolation liquid treating system and method - Google Patents
Garbage percolation liquid treating system and method Download PDFInfo
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- CN108128990A CN108128990A CN201810153589.7A CN201810153589A CN108128990A CN 108128990 A CN108128990 A CN 108128990A CN 201810153589 A CN201810153589 A CN 201810153589A CN 108128990 A CN108128990 A CN 108128990A
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- 239000007788 liquid Substances 0.000 title claims abstract description 60
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 57
- 238000005325 percolation Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000010802 sludge Substances 0.000 claims abstract description 70
- 239000000149 chemical water pollutant Substances 0.000 claims abstract description 67
- 239000000872 buffer Substances 0.000 claims abstract description 53
- 238000001556 precipitation Methods 0.000 claims abstract description 43
- 238000004062 sedimentation Methods 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 36
- 238000005273 aeration Methods 0.000 claims description 50
- 238000002156 mixing Methods 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 16
- 239000006228 supernatant Substances 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 2
- 238000005276 aerator Methods 0.000 claims 1
- 238000011282 treatment Methods 0.000 abstract description 29
- 238000005265 energy consumption Methods 0.000 abstract description 16
- 239000010865 sewage Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 14
- 238000012545 processing Methods 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000010992 reflux Methods 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 230000008901 benefit Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 238000006396 nitration reaction Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 244000005700 microbiome Species 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000013019 agitation Methods 0.000 description 4
- 230000001546 nitrifying effect Effects 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 230000000703 anti-shock Effects 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000011081 inoculation Methods 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000011284 combination treatment Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 241000233866 Fungi Species 0.000 description 1
- 241000708794 Legionella impletisoli Species 0.000 description 1
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- -1 Times Substances 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005706 microflora Species 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
Abstract
The invention discloses garbage percolation liquid treating system and methods, are related to sewage treatment field.Garbage percolation liquid treating system provided by the invention includes pre- anoxic selection pond, level-one denitrification pond, level-one nitrification tank, intermediate sedimentation concentration basin, pre- anoxic buffer pool, two level denitrification pond, two level nitrification tank, two-stage precipitation concentration basin, intermediate clear water reserviors, ultrafiltration apparatus, level-one Catalyzed by Ultrasonic Wave device and two level Catalyzed by Ultrasonic Wave device.Method for treating garbage percolation liquid provided by the invention includes landfill leachate passing sequentially through above-mentioned garbage percolation liquid treating system.The second thickened sludge in two-stage precipitation concentration basin is back to pre- anoxic buffer pool, and the third thickened sludge in ultrafiltration apparatus is back to pre- anoxic buffer pool.Garbage percolation liquid treating system provided by the invention and method have the characteristics that simple, floor space is small, low energy consumption, operating cost is low, stability is good and investment-saving.
Description
Technical field
The present invention relates to sewage treatment field, in particular to garbage percolation liquid treating system and method.
Background technology
This part intends to provides background for the embodiments of the present invention stated in claims and specific embodiment
Or context.Description herein recognizes it is the prior art not because not being included in this part.
With the fast development of China's economy, China's Municipal Domestic Garbage Output also rapidly increases, waste incineration and generating electricity
Treating capacity it is growing day by day, waste incineration and generating electricity use incineration when, need to by new refuse garbage storing hole in store up
It deposits 3~5 days and carries out fermentation curing, to achieve the purpose that leach moisture, improve calorific value, just can guarantee the normal fortune of follow-up incinerator
Row.The moisture leached in above-mentioned rubbish fermentation maturing process is generally known as landfill leachate.The characteristics of percolate is：It is organic
Pollutant COD, BOD5 are dense, and wherein BOD5/COD is about 0.5, and biodegradability is good, wherein, COD concentration about 30000~
90000mg/L, BOD5 about 15000~50000mg/L, secondly NH4-N, TN are dense, wherein, NH4-N concentration about 1500
~3000mg/L, TN concentration about 2500~4000mg/L, but the ratio of C/N is larger, is suitble to biochemical treatment.In addition, percolate
The water quality and quantity of generation fluctuates huge, complicated component, and with strong foul odour, yellowish-brown or black is presented.Garbage filter
The pollution effect of liquid be much larger than common sanitary sewage, so must by landfill leachate treatment it is up to standard after can just discharge or
Reuse.The treatment technology of landfill leachate is at home and abroad widely paid close attention at present, the processing running or in research
Technology mainly has biologic treating technique and membrane technology.
It is that the organic nitrogen of total nitrogen in landfill leachate, ammonia nitrogen are first passed through into nitrifier aerobic in bio-denitrification technology
Under the conditions of be oxidized to nitrite nitrogen, followed by nitrate nitrogen is oxidized to, then nitrate nitrogen by denitrifying bacterium under anoxic conditions
Nitrogen is reduced to, completes biological denitrificaion.The reaction condition difference of nitrifying process and denitrification process is larger, and nitrifying process is suitable
Occur under the relatively low aerobic environment of organic concentration, denitrification process is suitable to be sent out in the environment of anoxic and there are organic matter
It is raw, therefore bio-denitrification technology generally requires sewage first passing through nitration reaction, after by anti-nitration reaction can be only achieved biology
The effect of denitrogenation.The combination treatment method of preceding denitrification process and nitrifying process as disclosed in patent No. CN1562508A, can be with
There is Nitrogen removal effect to landfill leachate, but the removal rate of its total nitrogen is only 80%, the removal rate of organic matter is 90%, ammonia nitrogen
Removal rate for 99%, total nitrogen is difficult to meet processing requirement.As disclosed in patent No. CN101244880A preceding denitrification process, in
Between nitrifying process and rear-mounted denitrification process combination treatment method, preceding denitrification process lack effective nitrate nitrogen, Wu Fagao
The completion Nitrogen removal effect of effect.
In landfill leachate biologic treating technique, sludge concentration in biological reaction pool generally in 10~20mg/L, due to
Higher sludge concentration so that the enhancing of microorganism is mutual in biological reaction pool antagonism, list during compared to low concentration
The activity of position microorganism is relatively low, and MLVSS/MLSS ratios are relatively low, and the effective rate of utilization of activated sludge is relatively low in biological reaction pool,
So that whole biological treatment is relatively low to the removal effect of pollutant.
Invention content
The purpose of the present invention is to provide a kind of garbage percolation liquid treating system, have that simple, floor space is small, energy consumption
It is low, operating cost is low, stability is good and the characteristics of investment-saving.
Another object of the present invention is to provide a kind of method for treating garbage percolation liquid, have simple, floor space is small,
Low energy consumption, operating cost is low, stability is good and the characteristics of investment-saving.
The present invention provides a kind of technical solution：
A kind of garbage percolation liquid treating system, including pre- anoxic selection pond, level-one denitrification pond, level-one nitrification tank, centre
Precipitation concentration pond, two level denitrification pond, two level nitrification tank, two-stage precipitation concentration basin, intermediate clear water reserviors, surpasses pre- anoxic buffer pool
Filter equipment, level-one Catalyzed by Ultrasonic Wave device and two level Catalyzed by Ultrasonic Wave device.Pre- anoxic selection pond is connect with level-one denitrification pond, level-one
Denitrification pond is connect with level-one nitrification tank, and level-one nitrification tank is connect with intermediate sedimentation concentration basin, and intermediate sedimentation concentration basin is lacked with pre-
Oxygen buffer pool connects, and pre- anoxic buffer pool is connect with two level nitrification tank, and two level nitrification tank is connect with two level denitrification pond, and two level is anti-
Nitrification tank is connect with two-stage precipitation concentration basin, and two-stage precipitation concentration basin is connect with intermediate clear water reserviors, and intermediate clear water reserviors are set with ultrafiltration
Standby connection.Intermediate sedimentation concentration basin selects pond to connect by level-one Catalyzed by Ultrasonic Wave device with pre- anoxic, and two-stage precipitation concentration basin leads to
It crosses two level Catalyzed by Ultrasonic Wave device to connect with pre- anoxic buffer pool, ultrafiltration apparatus is buffered by two level Catalyzed by Ultrasonic Wave device and pre- anoxic
Pond connects.
Further, above-mentioned garbage percolation liquid treating system further includes mixing aeration device, mixing aeration device and level-one
The madial wall connection of nitrification tank or mixing aeration device are connect with the madial wall of two level nitrification tank.
Further, above-mentioned mixing aeration device includes agitating shaft and stirrer paddle, and one end and the level-one of agitating shaft nitrify
Pond is rotatablely connected, and stirrer paddle is set on agitating shaft and can be rotated with agitating shaft, and agitating shaft is provided with gas port along axis
And agitating shaft has radially been positioned apart from multiple solarization air caps, multiple solarization air caps are connected with gas port.
Further, above-mentioned stirrer paddle includes the first blade and the second blade, and the first blade and the second blade are with stirring
Mix axis connection, and the first blade and the interlaced setting of the second blade.
Further, the quantity of above-mentioned mixing aeration device is multiple, multiple mixing aeration devices with level-one nitrification tank
Connection or which part mixing aeration device are connect with level-one nitrification tank, and another part mixing aeration device is nitrified with two level
Pond connect with.
A kind of method for treating garbage percolation liquid, method for treating garbage percolation liquid use garbage percolation liquid treating system.Rubbish
Percolation liquid treating system includes pre- anoxic selection pond, level-one denitrification pond, level-one nitrification tank, intermediate sedimentation concentration basin, pre- anoxic
Buffer pool, two level denitrification pond, two level nitrification tank, two-stage precipitation concentration basin, intermediate clear water reserviors, ultrafiltration apparatus, level-one ultrasonic wave
Catalyst converter and two level Catalyzed by Ultrasonic Wave device.Pre- anoxic selection pond is connect with level-one denitrification pond, level-one denitrification pond and level-one nitre
Change pond connection, level-one nitrification tank is connect with intermediate sedimentation concentration basin, and intermediate sedimentation concentration basin is connect with pre- anoxic buffer pool, pre- to lack
Oxygen buffer pool is connect with two level nitrification tank, and two level nitrification tank is connect with two level denitrification pond, two level denitrification pond and two-stage precipitation
Concentration basin connects, and two-stage precipitation concentration basin is connect with intermediate clear water reserviors, and intermediate clear water reserviors are connect with ultrafiltration apparatus.Intermediate sedimentation is dense
Contracting pond selects pond to connect by level-one Catalyzed by Ultrasonic Wave device with pre- anoxic, and two-stage precipitation concentration basin passes through two level Catalyzed by Ultrasonic Wave device
It is connect with pre- anoxic buffer pool, ultrafiltration apparatus is connect by two level Catalyzed by Ultrasonic Wave device with pre- anoxic buffer pool.Landfill leachate
Processing method includes：Landfill leachate is passed sequentially through pre- anoxic selects pond, level-one denitrification pond, level-one nitrification tank, centre heavy
Shallow lake concentration basin, pre- anoxic buffer pool, two level denitrification pond, two level nitrification tank, two-stage precipitation concentration basin, intermediate clear water reserviors and ultrafiltration
Equipment.The first thickened sludge generated in intermediate sedimentation concentration basin is back to pre- anoxic selection pond.By two-stage precipitation concentration basin
The second interior thickened sludge is back to pre- anoxic buffer pool, and the third thickened sludge in ultrafiltration apparatus is back to pre- anoxic and is delayed
Rush pond.
Further, landfill leachate is imported into pre- anoxic selection pond and is stirred plug-flow, and landfill leachate is pre-
It is 6-10 hours that anoxic, which selects residence time in pond,.The landfill leachate in pond is selected to be directed into level-one denitrification pre- anoxic
Pond is simultaneously stirred plug-flow, and landfill leachate residence time in level-one denitrification pond is 10~14 hours.By the anti-nitre of level-one
The landfill leachate changed in pond is directed into level-one nitrification tank and carries out blast aeration, and landfill leachate stops in level-one nitrification tank
Time be 120~144 hours.Landfill leachate in level-one nitrification tank is directed into intermediate sedimentation concentration basin and is precipitated, and
Obtained supernatant is flow to pre- anoxic buffer pool, the first thickened sludge will be obtained and be back to pre- anoxic selection pond.Centre is heavy
Landfill leachate in the concentration basin of shallow lake is directed into two level denitrification pond and stirs plug-flow, and landfill leachate is in intermediate sedimentation concentration basin
Interior residence time is 10-14 hours.Landfill leachate in two level denitrification pond is directed into two level nitrification tank simultaneously air blast
Aeration, landfill leachate residence time in two level nitrification tank is 10-14 hours.By the landfill leachate in two level nitrification tank
It is directed into two-stage precipitation concentration basin and precipitates, and the supernatant obtained after being precipitated flow to intermediate clear water reserviors, by what is obtained
Second thickened sludge is back to pre- anoxic buffer pool.
Further, the first thickened sludge generated in intermediate sedimentation concentration basin is flowed back by level-one Catalyzed by Ultrasonic Wave device
Pond is selected to pre- anoxic.
Further, the second thickened sludge in two-stage precipitation concentration basin and ultrafiltration are set by two level Catalyzed by Ultrasonic Wave device
Standby interior third thickened sludge is back to pre- anoxic buffer pool.
Further, the liquid that convection current enters in ultrafiltration apparatus carries out separation of solid and liquid, and the clear water isolated is carried out depth
Processing, pre- anoxic buffer pool is back to by obtained third thickened sludge.
Compared with prior art, the advantageous effect of garbage percolation liquid treating system provided by the invention and method is：
Garbage percolation liquid treating system provided by the invention and the treatment effeciency of method are high：COD removal rates can to 95%,
BOD5 removal rates can can be to 98.5% to 99.5%, TN removal rates to 98%, NH4-N removal rates.To landfill leachate treatment
Afterwards, TN concentration can reach in clear water《Household refuse landfill sites contamination control standard》2 limit value mark of (GB 16889-2008) table
Standard, when needing to reach the discharge standard without increasing reverse osmosis treatment system when controlling TN concentration of emissions.By being segmented back
Flow Technique has carried out activated sludge the obligate bacterium hot housing of advantage and using the activity dirt of low-intensity ultrasonic radiation intensification
Mud treatment effeciency so that floor space reduces 10%~30%.Oxygen in activated sludge is enhanced using low intensity ultrasound wave radiation
Microcosmic mass-transfer efficiency, reduce required aeration quantity in nitrification tank, reduce the energy consumption of Aeration fan 10%~25%.Energy consumption
It is low.Using efficient processing method, reduce the residence time of biological treatment tank, the specification of equipment for reducing Aeration fan is big
It is small, save investment.And the energy consumption of Aeration fan is also reduced, saves operation power charge.Meanwhile it is also provided with pre- anoxic choosing
It selects pond and employs activated sludge technique of backflow, the inoculation and selection of obligate microorganism have been carried out to landfill leachate, after being
Continuous processing unit provides optimum condition, has the advantages that anti-shock loading is strong and stability is good.Rubbish provided by the invention
Rubbish percolation liquid treating system and method have that simple, floor space is small, low energy consumption, operating cost is low, stability is good and investment-saving
The characteristics of.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described.It should be appreciated that the following drawings illustrates only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of range.It for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structure diagram of garbage percolation liquid treating system that the embodiment of the present invention provides；
Fig. 2 is the structure diagram of mixing aeration device that the embodiment of the present invention provides；
Fig. 3 is the schematic cross-sectional view of mixing aeration device that the embodiment of the present invention provides；
Fig. 4 is the enlarged structure schematic diagram at IV in Fig. 2.
Icon：10- garbage percolation liquid treating systems；The pre- anoxic selection ponds of 101-；102- level-one denitrifications pond；103- level-ones
Nitrification tank；104- intermediate sedimentation concentration basins；The pre- anoxic buffer pools of 105-；106- two level denitrifications pond；107- two level nitrification tanks；
108- two-stage precipitation concentration basins；Clear water reserviors among 109-；110- ultrafiltration apparatus；111- level-one Catalyzed by Ultrasonic Wave devices；112- two levels
Catalyzed by Ultrasonic Wave device；200- mixing aeration devices；210- agitating shafts；211- gas ports；212- solarization air caps；220- stirrer paddles；
The first blades of 221-；2211- first row stomatas；2212- first stirs protrusion；The second blades of 222-；2221- second row stomatas；
2223- second stirs protrusion.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be configured to arrange and design with a variety of different.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained without creative efforts belong to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it is to be understood that the instructions such as term " on ", " under ", " interior ", " outer ", "left", "right"
Orientation or position relationship be based on orientation shown in the drawings or position relationship or the invention product using when usually put
Orientation or the orientation that usually understands of position relationship or those skilled in the art or position relationship, be for only for ease of and retouch
It states the present invention and simplifies description rather than instruction or imply that signified equipment or element must have specific orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relatively important
Property.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, " setting ", " even
Connect " etc. terms should be interpreted broadly, for example, " connection " can be fixedly connected or be detachably connected or integrally connect
It connects；Can be mechanical connection or electrical connection；Can be directly connected to, can also be indirectly connected with by intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail.
First embodiment
Referring to Fig. 1, present embodiments providing a kind of garbage percolation liquid treating system 10, there is simple, floor space
It is small, low energy consumption, operating cost is low, stability is good and the characteristics of investment-saving.
Garbage percolation liquid treating system 10 provided in this embodiment includes pre- anoxic selection pond 101, level-one denitrification pond
102nd, level-one nitrification tank 103, intermediate sedimentation concentration basin 104, pre- anoxic buffer pool 105, two level denitrification pond 106, two level nitrification
Pond 107, two-stage precipitation concentration basin 108, intermediate clear water reserviors 109, ultrafiltration pond ultrafiltration apparatus 110, level-one Catalyzed by Ultrasonic Wave device 111 and
Two level Catalyzed by Ultrasonic Wave device 112.Pre- anoxic selection pond 101 is connect with level-one denitrification pond 102, level-one denitrification pond 102 and one
Grade nitrification tank 103 connects, and level-one nitrification tank 103 is connect with intermediate sedimentation concentration basin 104, and intermediate sedimentation concentration basin 104 is lacked with pre-
Oxygen buffer pool 105 connects, and pre- anoxic buffer pool 105 is connect with two level nitrification tank 107, two level nitrification tank 107 and two level denitrification
Pond 106 connects, and two level denitrification pond 106 is connect with two-stage precipitation concentration basin 108, two-stage precipitation concentration basin 108 and intermediate clear water
Pond 109 connects, and intermediate clear water reserviors 109 are connect with ultrafiltration pond ultrafiltration apparatus 110.Intermediate sedimentation concentration basin 104 passes through level-one ultrasound
Wave catalyst converter 111 is connect with pre- anoxic selection pond 101, and two-stage precipitation concentration basin 108 is by two level Catalyzed by Ultrasonic Wave device 112 and in advance
Anoxic buffer pool 105 connects, and ultrafiltration pond ultrafiltration apparatus 110 is connected by two level Catalyzed by Ultrasonic Wave device 112 and pre- anoxic buffer pool 105
It connects.
The processing procedure of landfill leachate is illustrated individually below：
Pre- anoxic selects pond 101：Landfill leachate is placed in pre- anoxic selection pond 101, while level-one ultrasonic wave is urged
Change the activated sludge that device 111 flows back to be placed in together in pre- anoxic selection pond 101, plug-flow is continuously stirred in pre- anoxic selection pond 101.
Activated sludge and landfill leachate are sufficiently mixed contact, are conducive to the ecological environment in pre- anoxic selection pond 101 selective
Develop cotton-shaped bacterium, inhibit undue growth and the breeding of der Pilz with biological competition mechanism, pre- anoxic selection pond 101 not only can be with
Sludge bulking is controlled, the environment of anoxic is suitble to denitrifying bacteria to grow, plays certain denitrification, next with selecting
The effect of the dominant microflora of processing unit.Simultaneously reflux activated sludge have very high absorption property, with landfill leachate
After mixing, organic matter can be largely adsorbed, and mass transfer improves the removal efficiency of polluter into the cell.Pre- anoxic selects pond
101 residence times were 6~10 hours.
Level-one denitrification pond 102：Landfill leachate in pre- anoxic selection pond 101 is flowed in level-one denitrification pond 102, together
When the level-one nitrification liquid of level-one nitrification tank 103 is flowed back into level-one denitrification pond 102, continuously stirred in level-one denitrification pond 102
Mix plug-flow, additional carbon, the concentration ratio of carbon source and nitrate nitrogen is 2:1~5:1, preferably 3:1~4:1, to landfill leachate into
Row anti-nitration reaction.Since pre- anoxic selects pond 101 to act on, while adsorbed a large amount of organic the Superior selection of denitrifying bacteria
Object in the cell, mixes with the level-one denitrification liquid of reflux, forms good anti-nitration reaction condition, carry out efficient denitrification
Denitrification reaction.102 residence time of level-one denitrification pond is 10~14 hours.
Level-one nitrification tank 103：Landfill leachate in level-one denitrification pond 102 is flowed in level-one nitrification tank 103, nitrification tank
Interior continuous blast aeration, DO controls are in 2~5mg/L, and pH is 7~8, and sludge concentration is in 15~20g/L.Landfill leachate is carried out
Nitration reaction and carburizing reagent, largely remove removal organic polluter and ammonia nitrogen, and level-one nitrification tank 103 is discharged a part and flows to intermediate sink
Shallow lake concentration basin 104, a part flow back into level-one denitrification pond 102.103 residence time of level-one nitrification tank is 120~144 hours.
Intermediate sedimentation concentration basin 104：Landfill leachate in level-one nitrification tank 103 is flowed in intermediate sedimentation concentration basin 104,
The supernatant obtained after being precipitated flow to pre- anoxic buffer pool 105, and the sludge after precipitation concentration flow to level-one Catalyzed by Ultrasonic Wave
Device 111.The flocculation that intermediate sedimentation concentration basin 104 will be assembled using the effect that mechanical agitation is promoted in intermediate sedimentation concentration basin 104
Body has just taken off steady microscopic particles and has contacted with each other, adsorbs in the landfill leachate with entering intermediate sedimentation concentration basin 104, make suspended matter
It is comparatively fast detached with supernatant.Simultaneously as the effect that mechanical agitation is promoted, has very high sludge condensation rate, makes intermediate sedimentation
Higher sludge concentration can be kept in concentration basin 104, while makes the thickened sludge concentration of reflux higher.Intermediate sedimentation concentration basin
104 residence times were 1.5~2.5 hours, and it is handle water 3~5 times that mechanical agitation, which promotes water, and supernatant upflow velocity is
0.7~1.3mm/s.
Level-one Catalyzed by Ultrasonic Wave device 111：Thickened sludge in intermediate sedimentation concentration basin 104 flows back into level-one Catalyzed by Ultrasonic Wave
Device 111, level-one Catalyzed by Ultrasonic Wave device 111 generate low-intensity ultrasonic, thickened sludge are catalyzed, and catalysis post activation sludge returns
Flow to pre- anoxic selection pond 101.Low intensity ultrasound wave radiation is carried out to activated sludge has raising sludge absorption performance, enhancing dirt
Mud activity, the work for improving MLVSS/MLSS ratios, enhancing microbial cell synthesis capability and reducing the average grain diameter of sludge flco
With, therefore the treatment effeciency of activated sludge is improved, enhance the microcosmic mass-transfer efficiency of oxygen in activated sludge.Level-one ultrasonic wave is urged
Change device 111 and use frequency as 20~22kHz, power density is 18~22W/L and radiated time is 4.5~5.5min.
Pre- anoxic buffer pool 105：Landfill leachate in intermediate sedimentation concentration basin 104 flows to pre- anoxic buffer pool 105, together
When the activated sludge that two level Catalyzed by Ultrasonic Wave device 112 flows back is placed in together in pre- anoxic buffer pool 105, pre- anoxic buffer pool
Plug-flow is continuously stirred in 105.Since level-one biological treatment tank and pollutant concentration difference in two stage biological processing are larger, this rubbish
The high-efficient treatment method of rubbish percolate separates level-one biological treatment tank and the sludge in two stage biological processing pond, is level-one
Mutual indepedent and metastable environment is formed in biological treatment tank and two stage biological processing pond, in every grade of biological treatment tank
Activated sludge carries out obligate bacterium hot housing, to reach the highest treatment effeciency of activated sludge in every grade of biological treatment tank.It is logical
The activated sludge of 112 reflux of reflux two level Catalyzed by Ultrasonic Wave device is crossed, water quality and quantity is carried out to the water of level-one biological treatment tank
It buffers and adjusts and obligate selection is carried out to microorganism, ensure the obligate culture of activated sludge in two stage biological processing pond.In advance
105 residence time of anoxic buffer pool is 6~9 hours.
Two level denitrification pond 106：Landfill leachate in pre- anoxic buffer pool 105 is flowed in two level denitrification pond 106, and two
Continuously stir plug-flow in grade denitrification pond 106, additional carbon, the concentration ratio of carbon source and nitrate nitrogen is 5:1~8:1, preferably 6:1
~7:1, anti-nitration reaction is carried out to landfill leachate.106 residence time of two level denitrification pond is 10~14 hours.
Two level nitrification tank 107：Landfill leachate in two level denitrification pond 106 is flowed in two level nitrification tank 107, nitrification tank
Interior continuous blast aeration, DO are controlled in 2~4mg/L, and nitration reaction and carburizing reagent are carried out to landfill leachate, and removal two level is anti-
The carbon source excessive in being discharged of nitrification tank 106.107 residence time of two level nitrification tank is 10~14 hours.
Two-stage precipitation concentration basin 108：Landfill leachate in two level nitrification tank 107 is flowed in two-stage precipitation concentration basin 108,
The supernatant obtained after being precipitated flow to intermediate clear water reserviors 109, and the sludge after precipitation concentration flow to two level Catalyzed by Ultrasonic Wave device
112.108 residence time of two-stage precipitation concentration basin is 1.0~1.5 hours, and it is handle water 3~5 that mechanical agitation, which promotes water,
Times, supernatant upflow velocity is 1.0~1.5mm/s.
Intermediate clear water reserviors 109：Supernatant in two-stage precipitation concentration basin 108 is flowed in intermediate clear water reserviors 109, be ultrafiltration into
Water provides advantage.Intermediate 109 residence time of clear water reserviors is 3~5 hours.
Ultrafiltration pond ultrafiltration apparatus 110：Supernatant in intermediate clear water reserviors 109 is flowed in ultrafilter, passes through the film of ultrafilter
Component is to supernatant progress separation of solid and liquid, reuse after the clear water qualified discharge isolated or progress advanced treating, thickened sludge stream
To two level Catalyzed by Ultrasonic Wave device 112.The membrane aperture of ultrafilter membrane module is less than or equal to 30 nanometers, in pipe operating pressure for 0.3~
0.5MPa。
Two level Catalyzed by Ultrasonic Wave device 112：Thickened sludge one in thickened sludge and ultrafiltration in two-stage precipitation concentration basin 108
And flow back into two level Catalyzed by Ultrasonic Wave device 112, two level Catalyzed by Ultrasonic Wave device 112 generate low-intensity ultrasonic, to thickened sludge into
Row catalysis, catalysis post activation sludge reflux to pre- anoxic buffer pool 105.Two level Catalyzed by Ultrasonic Wave device 112 use frequency for 19~
21kHz, power density is 16~18W/L and radiated time is 4~5min.
It should be noted that the treatment effeciency of garbage percolation liquid treating system 10 provided in this embodiment is high：COD removal rates
It can can can be to 98.5% to 99.5%, TN removal rates to 98%, NH4-N removal rates to 95%, BOD5 removal rates.Rubbish is oozed
After filtrate processing, TN concentration can reach in clear water《Household refuse landfill sites contamination control standard》(GB 16889-2008) table 2
Standard limit, when needing to reach the discharge standard without increasing reverse osmosis treatment system when controlling TN concentration of emissions.Pass through
Segment reflux technology has carried out activated sludge the obligate bacterium hot housing of advantage and has used low-intensity ultrasonic radiation intensification
Active sludge treatment efficiency so that floor space reduces 10%~30%.Active dirt is enhanced using low intensity ultrasound wave radiation
The microcosmic mass-transfer efficiency of oxygen in mud reduces required aeration quantity in nitrification tank, reduces the energy consumption of Aeration fan 10%~25%.
Low energy consumption.Using efficient processing method, reduce the residence time of biological treatment tank, reduce the specification of equipment of Aeration fan
Size saves investment.And the energy consumption of Aeration fan is also reduced, saves operation power charge.Meanwhile it is also provided with pre- anoxic
It selects pond 101 and employs activated sludge technique of backflow, the inoculation and selection of obligate microorganism have been carried out to landfill leachate,
Optimum condition is provided for subsequent processing units, has the advantages that anti-shock loading is strong and stability is good.The present embodiment carries
The garbage percolation liquid treating system 10 of confession has that simple, floor space is small, low energy consumption, operating cost is low, stability is good and saves throwing
The characteristics of money.
Fig. 2 to Fig. 4 is please referred to, in the present embodiment, garbage percolation liquid treating system 10 further includes mixing aeration device
200, mixing aeration device 200 is connect with the madial wall of level-one nitrification tank 103 or mixing aeration device 200 is nitrified with two level
The madial wall connection in pond 107.
In the present embodiment, mixing aeration device 200 include agitating shaft 210 and stirrer paddle 220, the one of agitating shaft 210
End is rotatablely connected with level-one nitrification tank 103, and stirrer paddle 220 is set on agitating shaft 210 and can be rotated with agitating shaft 210,
Axis is provided with gas port 211 to agitating shaft 210 and agitating shaft 210 has radially been positioned apart from multiple solarization air caps 212, more
A solarization air cap 212 is connected with gas port 211.
In the present embodiment, stirrer paddle 220 includes the first blade 221 and the second blade 222, the first blade 221 and the
Two blades 222 are connect with agitating shaft 210, and the first blade 221 and the second blade 222 mutually say a be staggered.
In the present embodiment, the first blade 221 is provided with first row stomata 2211, first row stomata 2211 and gas port
211 connections.Second blade 222 is provided with second row stomata 2221, and second row stomata 2221 is connected with gas port 211.
It is understood that the setting of first row stomata 2211 and second row stomata 2221 helps to introduce gas into liquid
In vivo, and then promote to react.
In the present embodiment, the first blade 221 is additionally provided with multiple spaced first stirring protrusions 2212, the second paddle
Leaf 222 is additionally provided with multiple spaced second stirring protrusions 2223.
It is understood that can promote to stir by the first stirring protrusion 2212 and the second stirring protrusion 2223, and then
Promote reaction.
In the present embodiment, the quantity of mixing aeration device 200 is two, in two mixing aeration devices 200 wherein
One mixing aeration device 200 is connect with the madial wall of level-one nitrification tank 103, another in two mixing aeration devices 200
The madial wall connection of 200 two level nitrification tank 107 of mixing aeration device.
In the present embodiment, the quantity of mixing aeration device 200 is multiple, and multiple mixing aeration devices 200 are and level-one
Nitrification tank 103 connects or which part mixing aeration device 200 is connect with level-one nitrification tank 103, another part stirring aeration
Device 200 is connect with two level nitrification tank 107.Garbage percolation liquid treating system 10 selects 101 level-one denitrification pond of pond with pre- anoxic
102 level-one nitrification tank, 103 intermediate sedimentation concentration basin, 104 pre- 105 two level denitrification pond of anoxic buffer pool, 106 two level nitrification tank 107
108 intermediate clear water reserviors 109 of two-stage precipitation concentration basin.
With pre- scarce with 103 intermediate sedimentation concentration basin 104 of pre- anoxic selection 101 102 level-one nitrification tank of level-one denitrification pond of pond
105 106 two level nitrification tank of two level denitrification pond of oxygen buffer pool, 107 two-stage precipitation concentration basin, 108 intermediate clear water reserviors 109 with with this
The advantageous effect for the garbage percolation liquid treating system 10 that embodiment provides：Garbage percolation liquid treating system 10 provided in this embodiment
Treatment effeciency it is high：COD removal rates can can be gone to 95%, BOD5 removal rates to 98%, NH4-N removal rates to 99.5%, TN
Except rate can be to 98.5%.After landfill leachate treatment, TN concentration can reach in clear water《Household refuse landfill sites contamination control
Standard》(GB16889-2008) 2 standard limit of table, when needing to reach the discharge standard without increasing when controlling TN concentration of emissions
Add reverse osmosis treatment system.By segment reflux technology, the obligate bacterium hot housing of advantage is carried out to activated sludge and has been used
Low-intensity ultrasonic radiation intensification active sludge treatment efficiency so that floor space reduces 10%~30%.Surpassed using low-intensity
Acoustic irradiation enhances the microcosmic mass-transfer efficiency of oxygen in activated sludge, reduces required aeration quantity in nitrification tank, reduces aeration
The energy consumption of wind turbine 10%~25%.Low energy consumption.Using efficient processing method, reduce the residence time of biological treatment tank, drop
The low specification of equipment size of Aeration fan, saves investment.And the energy consumption of Aeration fan is also reduced, saves operation electricity
Take.Meanwhile be also provided with pre- anoxic selection pond 101 and employ activated sludge technique of backflow, landfill leachate is carried out
The inoculation and selection of obligate microorganism provide optimum condition for subsequent processing units, by force and steady with anti-shock loading
The advantages of qualitative good.Garbage percolation liquid treating system 10 provided in this embodiment has that simple, floor space is small, low energy consumption, fortune
Row expense is low, stability is good and the characteristics of investment-saving.
Second embodiment
Referring to Fig. 1, present embodiments providing a kind of method for treating garbage percolation liquid, method for treating garbage percolation liquid uses
The garbage percolation liquid treating system 10 provided such as first embodiment.
Method for treating garbage percolation liquid provided in this embodiment includes：Landfill leachate is passed sequentially through into pre- anoxic selection pond
101st, level-one denitrification pond 102, level-one nitrification tank 103, intermediate sedimentation concentration basin 104, pre- anoxic buffer pool 105, the anti-nitre of two level
Change pond 106, two level nitrification tank 107, two-stage precipitation concentration basin 108, intermediate clear water reserviors 109 and ultrafiltration pond ultrafiltration apparatus 110.By in
Between the first thickened sludge for generating in precipitation concentration pond 104 be back to pre- anoxic selection pond 101.By two-stage precipitation concentration basin 108
The second interior thickened sludge is back to pre- anoxic buffer pool 105, and the third thickened sludge in ultrafiltration pond ultrafiltration apparatus 110 is returned
It flow to pre- anoxic buffer pool 105.
Further, landfill leachate is imported into pre- anoxic selection pond 101 and is stirred plug-flow, and landfill leachate exists
It is 6-10 hours that pre- anoxic, which selects residence time in pond 101,.The landfill leachate in pond 101 is selected to be directed into one pre- anoxic
Grade denitrification pond 102 is simultaneously stirred plug-flow, and landfill leachate residence time in level-one denitrification pond 102 is small for 10~14
When.Landfill leachate in level-one denitrification pond 102 is directed into level-one nitrification tank 103 and carries out blast aeration, garbage filter
Liquid residence time in level-one nitrification tank 103 is 120~144 hours.Landfill leachate in level-one nitrification tank 103 is imported
It is precipitated in intermediate sedimentation concentration basin 104, and obtained supernatant is flow to pre- anoxic buffer pool 105, the first concentration will be obtained
Sludge reflux to pre- anoxic selects pond 101.Landfill leachate in intermediate sedimentation concentration basin 104 is directed into two level denitrification pond
106 and plug-flow is stirred, landfill leachate residence time in intermediate sedimentation concentration basin 104 is 10-14 hours.By the anti-nitre of two level
Change the landfill leachate in pond 106 and be directed into simultaneously blast aeration in two level nitrification tank 107, landfill leachate is in two level nitrification tank
Residence time is 10-14 hours in 107.Landfill leachate in two level nitrification tank 107 is directed into two-stage precipitation concentration basin
It is precipitated in 108, and the supernatant obtained after being precipitated flow to intermediate clear water reserviors 109, the second obtained thickened sludge is returned
It flow to pre- anoxic buffer pool 105.
Further, it is by level-one Catalyzed by Ultrasonic Wave device 111 that the first concentration generated in intermediate sedimentation concentration basin 104 is dirty
Mud is back to pre- anoxic selection pond 101.
Further, by two level Catalyzed by Ultrasonic Wave device 112 by the second thickened sludge in two-stage precipitation concentration basin 108 and
Third thickened sludge in ultrafiltration pond ultrafiltration apparatus 110 is back to pre- anoxic buffer pool 105.
Further, the liquid in convection current excess of imports filter tank ultrafiltration apparatus 110 carries out separation of solid and liquid, and the clear water that will be isolated
Advanced treating is carried out, obtained third thickened sludge is back to pre- anoxic buffer pool 105.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of garbage percolation liquid treating system, which is characterized in that including pre- anoxic selection pond, level-one denitrification pond, level-one nitre
Change pond, intermediate sedimentation concentration basin, pre- anoxic buffer pool, two level denitrification pond, two level nitrification tank, two-stage precipitation concentration basin, centre
Clear water reserviors, ultrafiltration apparatus, level-one Catalyzed by Ultrasonic Wave device and two level Catalyzed by Ultrasonic Wave device；
The pre- anoxic selection pond is connect with the level-one denitrification pond, and the level-one denitrification pond connects with the level-one nitrification tank
It connects, the level-one nitrification tank is connect with the intermediate sedimentation concentration basin, and the intermediate sedimentation concentration basin is buffered with the pre- anoxic
Pond connects, and the pre- anoxic buffer pool is connect with the two level nitrification tank, the two level nitrification tank and the two level denitrification pond
Connection, the two level denitrification pond are connect with the two-stage precipitation concentration basin, and the two-stage precipitation concentration basin and the centre are clear
Pond connects, and the intermediate clear water reserviors are connect with the ultrafiltration apparatus；
The intermediate sedimentation concentration basin selects pond to connect by the level-one Catalyzed by Ultrasonic Wave device with the pre- anoxic, the two level
Precipitation concentration pond is connect by the two level Catalyzed by Ultrasonic Wave device with the pre- anoxic buffer pool, and the ultrafiltration apparatus passes through described
Two level Catalyzed by Ultrasonic Wave device is connect with the pre- anoxic buffer pool.
2. garbage percolation liquid treating system according to claim 1, which is characterized in that the garbage percolation liquid treating system
Mixing aeration device is further included, the mixing aeration device is connect with the madial wall of the level-one nitrification tank or the stirring
Aerator is connect with the madial wall of the two level nitrification tank.
3. garbage percolation liquid treating system according to claim 2, which is characterized in that the mixing aeration device includes stirring
Axis and stirrer paddle are mixed, one end of the agitating shaft is rotatablely connected with the level-one nitrification tank, and the stirrer paddle is set to institute
State on agitating shaft and can be rotated with the agitating shaft, the agitating shaft axis is provided with gas port and the agitating shaft along its
Multiple solarization air caps are provided with to spaced radial, multiple solarization air caps are connected with the gas port.
4. garbage percolation liquid treating system according to claim 3, which is characterized in that the stirrer paddle includes the first paddle
Leaf and the second blade, first blade and second blade with the stirring axis connection, and first blade and institute
State the interlaced setting of the second blade.
5. according to the garbage percolation liquid treating system described in any one in claim 2-4, which is characterized in that the stirring exposes
The quantity of device of air is multiple, and multiple mixing aeration devices are connect with the level-one nitrification tank or which part institute
It states mixing aeration device to connect with the level-one nitrification tank, mixing aeration device described in another part connects with the two level nitrification tank
It connects.
6. a kind of method for treating garbage percolation liquid, which is characterized in that the method for treating garbage percolation liquid uses such as claim
Garbage percolation liquid treating system in 1-5 described in any one, the method for treating garbage percolation liquid include：By landfill leachate
Pass sequentially through the pre- anoxic selection pond, the level-one denitrification pond, the level-one nitrification tank, the intermediate sedimentation concentration basin,
The pre- anoxic buffer pool, the two level denitrification pond, the two level nitrification tank, the two-stage precipitation concentration basin, the centre
Clear water reserviors and the ultrafiltration apparatus；
The first thickened sludge generated in the intermediate sedimentation concentration basin is back to pre- anoxic selection pond；
The second thickened sludge in the two-stage precipitation concentration basin is back to the pre- anoxic buffer pool, and the ultrafiltration is set
Standby interior third thickened sludge is back to the pre- anoxic buffer pool.
7. method for treating garbage percolation liquid according to claim 6, which is characterized in that the landfill leachate is imported into institute
State pre- anoxic selection pond and be stirred plug-flow, and the landfill leachate the pre- anoxic select in pond residence time for
6-10 hours；
The landfill leachate in the pre- anoxic selection pond is directed into the level-one denitrification pond and is stirred plug-flow,
Landfill leachate residence time in the level-one denitrification pond is 10~14 hours；
The landfill leachate in the level-one denitrification pond is directed into the level-one nitrification tank and carries out blast aeration, institute
It is 120~144 hours to state landfill leachate residence time in the level-one nitrification tank；
The landfill leachate in the level-one nitrification tank is directed into the intermediate sedimentation concentration basin and is precipitated, and will be obtained
Supernatant flow to the pre- anoxic buffer pool, first thickened sludge will be obtained and be back to the pre- anoxic selection pond；
The landfill leachate in the intermediate sedimentation concentration basin is directed into the two level denitrification pond and stirs plug-flow, institute
It is 10-14 hours to state landfill leachate residence time in the intermediate sedimentation concentration basin；
The landfill leachate in the two level denitrification pond is directed into the two level nitrification tank simultaneously blast aeration, it is described
Landfill leachate residence time in the two level nitrification tank is 10-14 hours；
The landfill leachate in the two level nitrification tank is directed into the two-stage precipitation concentration basin and is precipitated, and will be carried out
The supernatant obtained after precipitation flow to the intermediate clear water reserviors, and obtained second thickened sludge is back to the pre- anoxic
Buffer pool.
8. method for treating garbage percolation liquid according to claim 6, which is characterized in that pass through the level-one Catalyzed by Ultrasonic Wave
The first thickened sludge generated in the intermediate sedimentation concentration basin is back to the pre- anoxic and selects pond by device.
9. method for treating garbage percolation liquid according to claim 6, which is characterized in that pass through the two level Catalyzed by Ultrasonic Wave
Third thickened sludge in the second thickened sludge and the ultrafiltration apparatus in the two-stage precipitation concentration basin is back to institute by device
State pre- anoxic buffer pool.
10. method for treating garbage percolation liquid according to claim 6, which is characterized in that flowing into the ultrafiltration apparatus
Liquid carry out separation of solid and liquid, and by the clear water isolated carry out advanced treating, obtained third thickened sludge is back to institute
State pre- anoxic buffer pool.
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