CN109020097A - A kind of garbage leachate full dose processing equipment and method - Google Patents
A kind of garbage leachate full dose processing equipment and method Download PDFInfo
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- CN109020097A CN109020097A CN201811151846.XA CN201811151846A CN109020097A CN 109020097 A CN109020097 A CN 109020097A CN 201811151846 A CN201811151846 A CN 201811151846A CN 109020097 A CN109020097 A CN 109020097A
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- garbage leachate
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- full dose
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- anaerobic reactor
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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
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Abstract
The embodiment of the present invention discloses a kind of garbage leachate full dose processing equipment and method, is related to garbage leachate processing technology field, which includes anaerobic reactor, membrane bioreactor, settler, nanofiltration device and advanced oxidation device；It is provided with combustible gas collecting cover at the top of anaerobic reactor, anaerobism packing layer is provided in the middle part of anaerobic reactor, the lower part of anaerobic reactor is provided with water distributor；The reflux liquid outlet and inlet tube of anaerobic reactor connect the inlet of water distributor altogether, the liquid outlet of anaerobic reactor and the inlet of membrane bioreactor connect, the liquid outlet of membrane bioreactor and the inlet of nanofiltration device connect, the liquid outlet of nanofiltration device and the inlet of advanced oxidation device connect, the concentrated solution outlet of nanofiltration device is connect with settler, and the liquid outlet of settler and the inlet of membrane bioreactor connect.The processing equipment stability of the embodiment of the present invention is high, and operating cost is low, can thoroughly solve the processing problem of nanofiltration concentrate.
Description
Technical field
The present invention relates to garbage leachate processing technology fields, and in particular to a kind of garbage leachate full dose processing equipment and
Method.
Background technique
Currently, landfill leachate treatment generallys use " pretreatment+biological treatment+film process " group technology.At the combination
Science and engineering skill is the prevailing technology of China's garbage leachate processing, which has lot of advantages, such as: solving in Leachate site
The advanced treating problem of contained a large amount of substances and toxicant difficult to degrade, capacity of resisting impact load is strong, and outlet effect is good, up to standard
Rate is high, and operating cost is low etc..But accompanying problem is that producing the film concentrate more than 40% or so.It is rich in concentrate
Collection has a large amount of hardly degraded organic substance, inorganic salts and micro heavy, and traditional handicraft is difficult to handle it；Moreover,
Film Concentrated liquid recharge landfill yard causes salinity and hardly degraded organic substance to accumulate, and percolation liquid treating system is caused to be unable to operate normally,
To form vicious circle, the operational safety of landfill yard may cause.According to existing Engineering Projects, the processing skill of film concentrate
Art is not also overripened, and construction and operating cost are up to 200 yuan/ton or more, become the bottle of landfill leachate treatment industry development
Neck.Therefore, the equipment be badly in need of that a kind of processing cost is low, and advanced treating can be carried out to garbage leachate.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of garbage leachate full dose processing equipment and method, existing to solve
With the presence of refuse leachate treatment technology processing cost is high and the halfway problem of processing.
To achieve the above object, the embodiment of the present invention provides a kind of garbage leachate full dose processing equipment, and the rubbish seeps
Dripping liquid full dose processing equipment includes anaerobic reactor, membrane bioreactor, settler, nanofiltration device and advanced oxidation device；
It is provided with combustible gas collecting cover at the top of the anaerobic reactor, is provided in the middle part of the anaerobic reactor micro- for being inoculated with
The anaerobism packing layer of biology, the lower part of the anaerobic reactor is provided with water distributor；The reflux liquid outlet of the anaerobic reactor
Connect the inlet of the water distributor, the feed liquor of the liquid outlet of the anaerobic reactor and the membrane bioreactor altogether with inlet tube
Mouth connection, the liquid outlet of the membrane bioreactor are connect with the inlet of the nanofiltration device, and the nanofiltration device goes out liquid
Mouth is connect with the inlet of the advanced oxidation device, and the concentrated solution outlet of the nanofiltration device is connect with the settler,
The liquid outlet of the settler is connect with the inlet of the membrane bioreactor.
Preferably, the membrane bioreactor includes anoxic section and the aerobic section that is connected to the anoxic section, the anoxic
The inlet of section is connect with the liquid outlet of the anaerobic reactor, and the anoxic section is provided with the first blender, the aerobic section
It is provided with the first aerator and immersion ultrafiltration module, the air inlet of first aerator and the gas outlet of blower connect
It connects, the liquid outlet of the immersion ultrafiltration module is connect with the inlet of the nanofiltration device.
Preferably, the bottom of the advanced oxidation device is provided with the second aerator, second aerator into
The connection of the gas outlet of port and ozone generating-device.
Preferably, the garbage leachate full dose processing equipment further includes biological filter, is set in the biological filter
It is equipped with biofilter material, the inlet of the biological filter is connect with the liquid outlet of the advanced oxidation device.
Preferably, the settler includes dosing pond and the sedimentation basin that is connected to the dosing pond, and the dosing pond is set
Be equipped with the second blender, the dosing pond is connect with the concentrated solution outlet of the nanofiltration device, the liquid outlet of the sedimentation basin with
The anoxic section connection.
Preferably, diversion trench is arranged in the bottom of the sedimentation basin, and the two sides of the diversion trench are provided with guide face, described to lead
Stream interface is horizontal by an angle.
Correspondingly, the present invention also provides a kind of garbage leachate full dose processing method, at the garbage leachate full dose
Reason method the following steps are included:
Garbage leachate is imported in anaerobic reactor, handles to obtain first treatment fluid through anaerobe by step a1；
Step a2, the first treatment fluid is imported in membrane bioreactor be successively stirred, Air Exposure and filtering
After obtain secondary treatment liquid and sludge；
The secondary treatment liquid is imported nanofiltration device and carries out UF membrane, obtains separating liquid and concentrate by step a3；
The separating liquid is imported in advanced oxidation device and carries out ozonation aerated by step a4, and it is heavy that the concentrate is imported
It is stirred in the device of shallow lake, makes it carry out being mixed to get mixed liquor with drug, then precipitated to obtain sludge to the mixed liquor
With production water.
Preferably, step a5 is also executed after executing the step a4: the advanced oxidation of advanced oxidation device output is produced
Water importing biological filter removes the residual contaminants in the advanced oxidation production water.
Preferably, step a6 is also executed after executing the step a4: the production water is imported in anoxic section.
The embodiment of the present invention has the advantages that
1, using traditional anaerobism+membrane bioreactor+nanofiltration group technology, by the COD of garbage leachate middle and high concentration,
The pollutants such as NH4+-N, TN effectively remove, and wherein the indexs such as NH4+-N, TN meet discharge standard, and COD index is reduced to 200mg/
L or less.
2, the concentrate that nanofiltration device produces water is effectively treated using chemical precipitation technique, removes 70% or more bio-refractory
Organic pollutant, avoid reflux after organic pollutant in system long-term accumulated and influence system producing water water quality, the technique fortune
Row is easy to operate, equipment is reliable and stable, and operating cost thoroughly solves the processing problem of nanofiltration concentrate down to 10 yuan/ton.
3, contaminant remaining in advanced oxidation+biofilter group technology advanced treating Leachate site is utilized, it is ensured that enter system
The sewage full dose qualified discharge of system, discharge meet table in " household refuse landfill sites pollutant catabolic gene standard " (GB16889-2008)
Emission limit as defined in 2.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of garbage leachate of embodiment of the present invention full dose processing equipment.
Fig. 2 is the flow chart of garbage leachate of embodiment of the present invention full dose processing method.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
As shown in Figure 1, garbage leachate full dose processing equipment includes anaerobic reactor 1, membrane bioreactor 2, precipitating dress
Set 6, nanofiltration device 3 and advanced oxidation device 4.
The top of anaerobic reactor 1 is provided with combustible gas collecting cover 11, and the middle part of anaerobic reactor 1 is provided with for connecing
The anaerobism packing layer 12 of kind of microorganism, the lower part of anaerobic reactor 1 are provided with water distributor 13, the liquid outlet of anaerobic reactor 1 and
Reflux liquid outlet is set to the top of anaerobic reactor 1, and the inlet of anaerobic reactor 1 is set to the lower part of anaerobic reactor 1,
Ensure that garbage leachate moves from bottom to top, and mud discharging mouth is set to anaerobic reaction after garbage leachate enters anaerobic reactor 1
The bottom of device 1.Combustible gas collecting cover 11 is in inverted funnel-form, and the top of combustible gas collecting cover 11 is provided with fuel gas
Outlet, fuel gas gas outlet are connect with caisson, and combustible gas collecting cover 11 is for collecting in anaerobic digestion mechanism
The combustible gas (methane) of generation realizes the recycling of the energy in Leachate site by recycling to fuel gas to greatest extent
With utilization, the good economic benefit of Leachate site biochemical system is further improved.The reflux liquid outlet and feed liquor of anaerobic reactor 1
Pipe connects the inlet of water distributor 13 altogether, and garbage leachate passes through in water distributor 13 uniformly input anaerobic reactor 1.
Membrane bioreactor 2 (MBR) includes anoxic section 21 and the aerobic section being connected to anoxic section 21 22, anoxic section 21 into
Liquid mouth is the inlet of membrane bioreactor 2, is set to the lower part of membrane bioreactor 2, the mud discharging mouth of membrane bioreactor 2 is set
It is placed in the bottom of aerobic section 22, the inlet of anoxic section 21 is connect with the liquid outlet of anaerobic reactor 1, and anoxic section 21 is provided with
One blender 23, aerobic section 22 are provided with the first aerator 24 and immersion ultrafiltration module 25, the first aerator 24 into
Port is connect with the gas outlet of blower 26, and aerator 24 carries out oxygenation exposure to first treatment fluid using the air that blower 26 inputs
Gas, liquid outlet of the liquid outlet of immersion ultrafiltration module 25 as membrane bioreactor 2, the liquid outlet of immersion ultrafiltration module 25
It is connect with the inlet of nanofiltration device 3.
Nanofiltration device 3 is used to further remove the pollutants such as COD in Leachate site, part divalent ion by UF membrane.It is logical
Anaerobic reactor 1, membrane bioreactor 2 and nanofiltration device 3 is crossed to combine, it can be by COD, NH4+- of garbage leachate middle and high concentration
N, the pollutants such as TN effectively remove, and wherein the indexs such as NH4+-N, TN meet discharge standard, COD index be reduced to 200mg/L with
Under.
The separating liquid progress that advanced oxidation device 4 is used to input to nanofiltration device 3 is ozonation aerated, advanced oxidation device 4
Bottom is provided with the second aerator 41, and the air inlet of the second aerator 41 is connect with the gas outlet of ozone generating-device 42,
Ozone generating-device 42 is used to provide ozone to the second aerator 41.
Settler 6 includes dosing pond 61 and the sedimentation basin 62 being connected to dosing pond 61, and dosing pond 61 is provided with second and stirs
Device 63 is mixed, the second blender 63 is used to stir the concentrate in dosing pond 61, reacts it sufficiently with drug, sedimentation basin 62 is used for
Realize the mud-water separation of concentrate.Dosing pond 61 is connect with the concentrated solution outlet of nanofiltration device 3, the liquid outlet of sedimentation basin 62 and lack
Oxygen section 21 connects.Further, it is discharged in order to facilitate sludge, the bottom setting diversion trench 64 of sedimentation basin 62, the two of diversion trench 64
Side is provided with guide face 65, and guide face 65 is horizontal by an angle.Diversion trench 64, membrane bioreactor 2 mud discharging mouth and
The mud discharging mouth of anaerobic reactor 1 is connect with subsequent sludge treatment device.
Further, in another embodiment of the present invention, garbage leachate full dose processing equipment further includes biological mistake
Filter tank 5, is provided with biofilter material 51 in biological filter 5, and the inlet of biological filter 5 and advanced oxidation device 4 go out liquid
Mouth connection.Biological filter 5, which is used to remove in liquid by biofilter material 51, remains least a portion of pollutant.
As shown in Fig. 2, the present invention also provides a kind of garbage leachate full dose processing method, garbage leachate full dose processing side
Method the following steps are included:
Garbage leachate is imported in anaerobic reactor 1, handles to obtain first treatment fluid through anaerobe by step a1；
After garbage leachate passes through water distributor 13 even into anaerobic reactor 1, garbage leachate moves from bottom to top,
The running temperature of anaerobic reactor 1 controls between 33~35 DEG C, and pH value range controls the garbage leachate between 7.2~8.0
During moving upwards, the anaerobic digestion microorganism in anaerobism packing layer 12 is acted on by anaerobic digestion will be exhausted in garbage leachate
Most of available organic matter is converted into combustible gas (methane), first treatment fluid is converted by garbage leachate, thus significantly
Reduce the COD in garbage leachate.In addition, if anaerobic digestion effect is not thorough, it can also be by garbage leachate by flowing back out
Liquid mouth is conveyed to water distributor 13, sets 500%~800% for internal reflux ratio, to realize garbage leachate in anaerobic reaction
Iterative cycles in device 1, until exporting COD concentration to film lower than after target value, then by first treatment fluid
In bioreactor 2.
First treatment fluid is imported in membrane bioreactor 2 and is successively stirred, obtains after Air Exposure and filtering by step a2
To secondary treatment liquid and sludge；
First treatment fluid initially enters anoxic section 21 after entering membrane bioreactor 2, is stirred by the first blender 23
Mixing is mixed, enters back into and carries out oxygenic aeration in aerobic section 22, Dissolved Oxygen concentration Control is 0.75~2.0mg/L.It is stirring and is filling
Oxygen be aerated during, using lack/aerobic activated sludge technique further remove remaining COD, NH4+-N in first treatment fluid,
TN, then mud-water separation is obtained by secondary treatment liquid and sludge by immersion ultrafiltration module 25.
Secondary treatment liquid is imported nanofiltration device 3 and carries out UF membrane, obtains separating liquid and concentrate by step a3；
After secondary treatment liquid enters nanofiltration device 3, COD in secondary treatment liquid, part two are further removed by UF membrane
Secondary treatment liquid is separated into concentrate and separating liquid by the pollutants such as valence ion, and producing water ratio is 85% or so.
Step a4, will separating liquid import advanced oxidation device 4 in carry out it is ozonation aerated, by concentrate import settler 6
In be stirred, make it carry out with drug being mixed to get mixed liquor, then precipitated to obtain sludge to mixed liquor and produce water.
It is that the second aerator 41 provides ozone by ozone generating-device 42 after separating liquid is imported advanced oxidation device 4
It is ozonation aerated to separating liquid progress, make the pollutants such as COD in separating liquid that oxidation reaction occur with ozone and then removed, thus
It obtains advanced oxidation and produces water；Meanwhile importing concentrate in the dosing pond 61 of settler 6, in the stirring of the second blender 63
Under, the concentrate in dosing pond 61 is sufficiently reacted with drug (coagulant, flocculant etc.), is subsequently entered sedimentation basin 62 and is sunk
It forms sediment, makes mud-water separation, obtain sludge and produce water, the sludge that sludge and anaerobic reactor 1, the membrane bioreactor 2 of generation generate
Merging is handled, and (6 spoil disposal rate of settler is about 3%, and 1 spoil disposal rate of anaerobic reactor is about 1%, 2 row of membrane bioreactor
Mud rate is about 5%) final realization Leachate site full dose processing.Nanofiltration device 3 is effectively treated using chemical precipitation technique and produces the dense of water
Contracting liquid removes the organic pollutant of 70% or more bio-refractory, avoids organic pollutant long-term accumulated in system after reflux
And system producing water water quality is influenced, the process operation is easy to operate, equipment is reliable and stable, and operating cost is down to 10 yuan/ton.
Further, in another embodiment, step a5 is also executed after executing step a4: by advanced oxidation device 4
The advanced oxidation of output produces the residual contaminants that water imports in the removal of biological filter 5 advanced oxidation production water, advanced by utilizing
Oxidation+biofilter group technology, contaminant remaining in advanced treating Leachate site, it is ensured that into the sewage full dose row up to standard of system
It puts, discharge meets emission limit as defined in table 2 in " household refuse landfill sites pollutant catabolic gene standard " (GB16889-2008).
Further, in another embodiment, step a6 is also executed after executing step a4: will produce water and import anoxic section
In 21.
Although being above described in detail with generality explanation and specific embodiment to the present invention, at this
On the basis of invention, it can be modified or is improved, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (9)
1. a kind of garbage leachate full dose processing equipment, which is characterized in that the garbage leachate full dose processing equipment includes detesting
Oxygen reactor, membrane bioreactor, settler, nanofiltration device and advanced oxidation device；It is set at the top of the anaerobic reactor
It is equipped with combustible gas collecting cover, the anaerobism packing layer for microbe inoculation is provided in the middle part of the anaerobic reactor, it is described
The lower part of anaerobic reactor is provided with water distributor；The reflux liquid outlet and inlet tube of the anaerobic reactor connect the water distributor altogether
Inlet, the liquid outlet of the anaerobic reactor connect with the inlet of the membrane bioreactor, the membrane biological reaction
The liquid outlet of device is connect with the inlet of the nanofiltration device, the liquid outlet of the nanofiltration device and the advanced oxidation device
Inlet connection, the concentrated solution outlet of the nanofiltration device connect with the settler, the liquid outlet of the settler and
The inlet of the membrane bioreactor connects.
2. garbage leachate full dose processing equipment according to claim 1, which is characterized in that the membrane bioreactor packet
The aerobic section for including anoxic section and being connected to the anoxic section, the inlet of the anoxic section and the liquid outlet of the anaerobic reactor
Connection, the anoxic section are provided with the first blender, and the aerobic section is provided with the first aerator and immersion ultrafiltration module,
The air inlet of first aerator and the gas outlet of blower connect, and the liquid outlet of the immersion ultrafiltration module is received with described
Filter the inlet connection of device.
3. garbage leachate full dose processing equipment according to claim 2, which is characterized in that the advanced oxidation device
Bottom is provided with the second aerator, and the air inlet of second aerator and the gas outlet of ozone generating-device connect.
4. garbage leachate full dose processing equipment according to claim 3, which is characterized in that the garbage leachate full dose
Processing equipment further includes biological filter, and biofilter material, the feed liquor of the biological filter are provided in the biological filter
Mouth is connect with the liquid outlet of the advanced oxidation device.
5. garbage leachate full dose processing equipment according to claim 4, which is characterized in that the settler includes adding
Medicine pond and the sedimentation basin being connected to the dosing pond, the dosing pond are provided with the second blender, and the dosing pond is received with described
The concentrated solution outlet connection of device is filtered, the liquid outlet of the sedimentation basin is connect with the anoxic section.
6. garbage leachate full dose processing equipment according to claim 5, which is characterized in that the bottom of the sedimentation basin is set
Diversion trench is set, the two sides of the diversion trench are provided with guide face, and the guide face is horizontal by an angle.
7. a kind of garbage leachate full dose processing method, which is characterized in that the garbage leachate full dose processing method include with
Lower step:
Garbage leachate is imported in anaerobic reactor, handles to obtain first treatment fluid through anaerobe by step a1；
The first treatment fluid is imported in membrane bioreactor and is successively stirred, obtains after Air Exposure and filtering by step a2
To secondary treatment liquid and sludge；
The secondary treatment liquid is imported nanofiltration device and carries out UF membrane, obtains separating liquid and concentrate by step a3；
Step a4, will the separating liquid import advanced oxidation device in carry out it is ozonation aerated, by the concentrate import precipitating dress
It is stirred in setting, makes it carry out being mixed to get mixed liquor with drug, then precipitated to obtain sludge and production to the mixed liquor
Water.
8. garbage leachate full dose processing method according to claim 7, which is characterized in that after executing the step a4
It also executes step a5: the advanced oxidation of advanced oxidation device output being produced into the water importing biological filter removal advanced oxidation and is produced
Residual contaminants in water.
9. garbage leachate full dose processing method according to claim 8, which is characterized in that after executing the step a4
It also executes step a6: the production water is imported in anoxic section.
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| CN201811151846.XA CN109020097A (en) | 2018-09-29 | 2018-09-29 | A kind of garbage leachate full dose processing equipment and method |
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| CN201811151846.XA CN109020097A (en) | 2018-09-29 | 2018-09-29 | A kind of garbage leachate full dose processing equipment and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109761416A (en) * | 2019-03-07 | 2019-05-17 | 山东泰禾环保科技股份有限公司 | Garbage leachate treatment process and its processing unit |
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| CN109761416A (en) * | 2019-03-07 | 2019-05-17 | 山东泰禾环保科技股份有限公司 | Garbage leachate treatment process and its processing unit |
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