CN105859009A - Treatment system and method for landfill leachate - Google Patents
Treatment system and method for landfill leachate Download PDFInfo
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- CN105859009A CN105859009A CN201610390241.0A CN201610390241A CN105859009A CN 105859009 A CN105859009 A CN 105859009A CN 201610390241 A CN201610390241 A CN 201610390241A CN 105859009 A CN105859009 A CN 105859009A
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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
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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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
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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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
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a treatment system and method for landfill leachate. The system comprises a pretreatment system, an evaporator and a pyrolyzing furnace. The pretreatment system comprises a filter and a homogenizing pond. The filter comprises a filter liquid outlet and a filter solid outlet. The homogenizing pond comprises a homogenizing pond inlet and a homogenizing pond outlet. The filter liquid outlet is connected with the homogenizing pond inlet. The evaporator comprises an evaporator liquid inlet, an evaporator liquid outlet and an evaporator steam outlet. The steam liquid inlet is connected to the homogenizing pond outlet. The treatment system and method for the landfill leachate achieve pollutant near zero emission; the landfill leachate is treated in a concentration and pyrolysis mode, treatment equipment is simple, and an occupied land is small; the whole system efficiently utilizes heat energy, and the treatment cost is reduced; no secondary pollutant is produced, and the environmental protection effect is good.
Description
Technical field
Present invention relates particularly to technical field of sewage, particularly relate to the process of a kind of percolate
System and method.
Background technology
The element of the first species that percolate is house refuse filling, stack, produce during burning etc.
Complicated high concentrated organic wastewater, has that water quality is complicated, hazardness is big, COD and BOD5Concentration height,
Ammonia-nitrogen content is high, content of beary metal high.This water quality characteristic of percolate makes its intractability
Greatly, processing cost is higher.
Up to the present, the processing method of domestic and international percolate from garbage filling field is main by the difference of principle
Be divided into: biologic treating technique, membrane technology, materializing strategy technology, advanced oxidation treatment technology,
Evaporation process technology etc. and the combined treatment form of above-mentioned various technology.
Biochemical process is a kind of main method of current landfill leachate treatment, by aerobic or anaerobic reaction
COD in degraded percolate and other pollutant.Bioanalysis is divided into Aerobic biological process, Anaerobe
Process and the combination of the two.Aerobic Process for Treatment includes activated sludge process, aeration oxidation pool, aerobic stabilization
The pool, biological rotating disk and trickling filter etc.；Anaerobic treatment includes that upward flow Sludge Bed, anaerobic immobilized are biological
Reactor, mixing reactor and the anaerobic stabilization pool.Simple by biochemical process process percolate, go out
Water water quality is difficult to up to standard.
Membrane technology be utilize barrier film make solvent with solute and a kind of method for treating water of separation of particles,
It is segmented into microfiltration, ultrafiltration, nanofiltration and reverse osmosis by the size of the motive force of film according to solute or solvent
Method thoroughly.Membrane technology, compared with tradition water technology, has three clear advantages: membrane process
Floor space is little；Water quality after process is highly stable；Increasingly automated, cost of labor is low.But
Membrane technology investment is big, and operating cost is high, and produces more intractable concentrated solution, therefore cannot obtain
To extensively application.
Physical-chemical process is to remove the soluble component in percolate by a series of physical-chemical reaction
With the Organic substance of absorption, the Organic substance of difficult for biological degradation is converted into the Organic substance of easily biological-degradable simultaneously
And by removal, main active charcoal absorption, chemical precipitation, Density Separation, chemical oxidation, chemistry
The multiple methods such as reduction, ion exchange, COD clearance is up to 50%～87%.With biological treatment phase
Ratio, materializing strategy is not changed by water quality and quantity and is affected, and effluent quality is more stable, the most right
BOD5/ COD ratio relatively low (0.07～0.20) is difficult to the percolate carried out a biological disposal upon, and has preferably place
Reason effect.But physical chemistry method processing cost is higher, it is unsuitable for the process of large scale rubbish percolate.
High-level oxidation technology be by physical chemistry method produce there is strong oxidizing property hydroxyl radical free radical (
OH), inducing chain reaction, the organic pollution in percolate is combined, and is degraded to titanium dioxide
The inorganic matter such as carbon, water, the problem such as non-secondary pollution, mainly include Fenton oxidation method, photocatalytic-oxidation
Several classes such as change method and Ozonation.High-level oxidation technology have applied widely, reaction rate fast,
Oxidability is strong, pollution-free or the advantage of of low pollution, but current multiple high-level oxidation technology is also in reality
Test room conceptual phase, there is processing cost height, be difficult to the problems such as industrialization.
Evaporation process technology: it is to utilize external energy evaporation to isolate to ooze that evaporation processes the principle of waste water
Moisture in filtrate, makes to need percolate stock solution volume to be processed to greatly reduce.Technique is processed with other
Comparing, percolate evaporation technology is insensitive to the change of water quality, has stronger adaptability.Percolate
After evaporation the process of concentrated solution include recharging, reverse osmosis and nanofiltration Combined Treatment or directly after solidification with
Rubbish landfill together etc..Subsequent treatment concentrated solution relatively costly, it is difficult to large-scale promotion.
Summary of the invention
The present invention proposes a kind of system and method the most quickly processing percolate, can not only be effective
Process polluter, and landfill leachate treatment efficiency, energy-conserving and environment-protective can be improved.
It is an object of the present invention to provide the processing system of a kind of percolate, including pretreatment system
System, vaporizer and pyrolysis oven,
Described pretreatment system includes filter and homogenizing pond, and described filter includes that filter liquid goes out
Mouth and filter solid outlet, described homogenizing pond includes homogenizing pond entrance and the outlet of homogenizing pond, described mistake
Filter liquid outlet is connected with described homogenizing pond entrance；
Described vaporizer includes vaporizer liquid inlet, vaporizer liquid outlet and vaporizer steam (vapor) outlet,
Described vaporizer liquid inlet is connected to the outlet of described homogenizing pond；
Described pyrolysis oven includes that pyrolysis oven liquid inlet, pyrolysis oven solid inlet and pyrolysis oven pyrolysis gas go out
Mouthful, described pyrolysis oven liquid inlet is connected with described vaporizer liquid outlet, and described pyrolysis oven solid enters
Mouth is connected with described filter solid outlet.
Filter retains the solid insoluble in percolate, delivers to pyrolysis oven after collection.Homogenizing pond is in mistake
After filter, energy regulating water quality and the water yield, keep the stable operation of processing system.
Percolate evaporation and concentration can be produced less amount of concentrated solution and substantial amounts of steam by vaporizer, its
In middle percolate, major part pollutant remain in concentrated solution, and large quantity of moisture and a small amount of volatility are organic
Thing evaporates formation steam.
Pyrolysis oven will filter solid residue and concentrated solution pyrolysis processing, and Organic substance resolves into little molecule
Fuel gas (includes CH4、H2, CO etc.) and the inorganic matter such as water.
The system of the present invention farther includes preheater, described preheater include preheater liquid inlet and
Preheater liquid outlet, described preheater liquid inlet is connected with the outlet of described homogenizing pond, described preheating
Device liquid outlet is connected with described vaporizer.Heat carrier in preheater is water, can be by by preheater
Percolate is heated to higher temperature, it is simple to subsequent evaporation concentrates.
In the present invention, described system farther includes residual neat recovering system, described residual neat recovering system bag
Include steam heat-exchanger and pyrolysis gas heat exchanger；Described steam heat-exchanger includes steam heat-exchanger
Steam inlet, the outlet of steam heat-exchanger high-temperature water and steam heat-exchanger condensate outlet, described heat
Solve gas-heat exchanger and include that pyrolysis gas heat exchanger pyrolysis gas entrance, pyrolysis gas heat exchanger pyrolysis gas go out
The outlet of mouth, pyrolysis gas heat exchanger high-temperature water and pyrolysis gas heat exchanger condensate outlet；Described steam
Heat exchanger steam inlet is connected with vaporizer steam (vapor) outlet, and described pyrolysis gas heat exchanger pyrolysis gas enters
Mouthful it is connected with described pyrolysis oven pyrolysis gas outlet, described steam heat-exchanger and pyrolysis gas heat exchanger
High-temperature water outlet is all connected with described preheater, described pyrolysis gas heat exchanger pyrolysis gas outlet and evaporation
The fuel gas inlet of device is connected.The high-temperature product that vaporizer and pyrolysis oven are produced by residual neat recovering system is carried out
Waste heat recovery, and recovery waste heat is used for preheater.
In the present invention, described system farther includes advanced treatment system, described advanced treatment system with
Described steam heat-exchanger condensate outlet is connected with described pyrolysis gas heat exchanger condensate outlet.Deeply
The condensed fluid of residual neat recovering system is carried out denitrogenation oxidation processes by degree processing system, thoroughly in degraded water body
Pollutant, water outlet enters and directly discharges or reuse after clear water reserviors.
Described system farther includes percolate collecting-tank, described percolate collecting-tank and institute
State filter to connect.
Another object of the present invention provides a kind of method utilizing said system to process percolate, bag
Include following steps:
A, percolate is sent into described filter filtering, pyrolysis sent into by the solid that will filter to isolate
Stove generation pyrolytic reaction；
B, will filter after percolate send into described homogenizing pond homogenize；
C, will homogenize after percolate send into described vaporizer be evaporated concentrate, produce concentrated solution；
D, the described concentrated solution described pyrolysis oven of feeding is carried out pyrolytic reaction, produce pyrolysis gas.
Described method further comprises the steps of: sent into described preheater before described step C by percolate
Preheat.
Described step C also produces steam, and described method further comprises the steps of: described steam and pyrolysis gas
Carry out recovery waste heat by indirect heat exchange, and the high-temperature water of recovery waste heat is delivered to described preheater.
Further, described method further comprises the steps of: the pyrolysis gas after cooling by described pyrolysis gas heat
The gas outlet of exchanger is transported to vaporizer.
Described method further comprises the steps of: sends the condensed fluid of described residual neat recovering system into the described degree of depth
Processing system carries out denitrogenation oxidation processes.
Processing system and the method for the percolate that the present invention provides realize pollutant near-zero release；Logical
Crossing concentration pyrolysis processing percolate, treatment facility is simple, takes up an area less；Whole system is efficient to heat energy
Utilize, reduce processing cost；Non-secondary pollution produce are raw, and environment protecting is good.
Accompanying drawing explanation
Fig. 1 is the processing system structural representation of percolate of the present invention；
Fig. 2 is the process flow figure of percolate of the present invention.
In figure:
1-percolate collecting-tank, 2-filter, 3-homogenizing pond, 4-preheater, 5-vaporizer,
6-pyrolysis oven, 7-residual neat recovering system, 8-advanced treatment system.
Detailed description of the invention
Below in conjunction with drawings and Examples, the detailed description of the invention of the present invention is carried out more detailed theory
Bright, so as to the advantage being more fully understood that the solution of the present invention and various aspects thereof.But, below
The detailed description of the invention and the embodiment that describe are only descriptive purpose rather than limitation of the present invention.
An object of the present invention is to provide the processing system of a kind of percolate, as it is shown in figure 1,
This system includes pretreatment system, vaporizer 5 and pyrolysis oven 6.
Pretreatment system includes filter 2 and homogenizing pond 3, filter 2 include filter liquid outlet and
Filter solid outlet, homogenizing pond 3 includes homogenizing pond entrance and the outlet of homogenizing pond, and filter liquid goes out
Mouth is connected with homogenizing pond entrance.
Vaporizer 5 includes vaporizer liquid inlet, vaporizer liquid outlet and vaporizer steam (vapor) outlet,
Vaporizer liquid inlet is connected to the outlet of described homogenizing pond.
Pyrolysis oven 6 includes pyrolysis oven liquid inlet, pyrolysis oven solid inlet and pyrolysis oven pyrolysis gas outlet,
Described pyrolysis oven liquid inlet is connected with described vaporizer liquid outlet, described pyrolysis oven solid inlet with
Described filter solid outlet connects.
Filter 2 retains the solid insoluble in percolate, delivers to pyrolysis oven 6 after collection.Homogenizing pond 3
After filter 2, in homogenizing pond 3, it is provided with mechanical agitator and pH in-line analyzer, can regulating water quality
And the water yield, keep the stable operation of processing system.
Vaporizer 5 uses SCE vaporizer, and by burning natural gas heat release, ignition temperature is 800 DEG C,
The high-temperature flue gas produced is passed through in percolate.Percolate evaporation and concentration can be produced less amount of concentration
Liquid and substantial amounts of steam, wherein in percolate, major part pollutant remain in concentrated solution, great Liang Shui
Divide and a small amount of volatile organic matter evaporates formation steam.
Pyrolysis oven 6 is that fixed-bed pyrolysis stove, solid residue and concentrated solution all pass through height in pyrolysis oven 6
Temperature pyrolysis processing, main generation pyrolysis gas and a small amount of lime-ash, ash collection landfill disposal.
Further, this system also includes percolate collecting-tank 1, preheater 4, waste heat recovery system
System 7 and advanced treatment system 8.
Percolate collecting-tank 1 is connected with filter 2.The main work of percolate collecting-tank 1
With being to be collected together by percolate, facilitate subsequent treatment.
Increasing preheater 4 between homogenizing pond 3 and vaporizer 5, preheater 4 includes that preheater liquid enters
Mouth and preheater liquid outlet, preheater liquid inlet is connected with homogenizing pond 3 outlet, preheater liquid
Outlet is connected with vaporizer 5.Homogenizing pond 3 water outlet enters preheater 4 and carries out heat temperature raising, preheater 4
Using hot water heat exchanger, percolate is heated by the high-temperature water produced by residual neat recovering system 7
Heating up, after rising to higher temperature, percolate processes in entering vaporizer 5 further.
Residual neat recovering system 7 includes steam heat-exchanger and pyrolysis gas heat exchanger；Steam heat-exchanger
Cold including steam heat-exchanger steam inlet, the outlet of steam heat-exchanger high-temperature water and steam heat-exchanger
Condensate outlet, pyrolysis gas heat exchanger includes that pyrolysis gas heat exchanger pyrolysis gas entrance, pyrolysis gas heat are handed over
The outlet of parallel operation pyrolysis gas outlet, pyrolysis gas heat exchanger high-temperature water and pyrolysis gas heat exchanger condensed fluid go out
Mouthful；Steam heat-exchanger steam inlet is connected with vaporizer steam (vapor) outlet, and pyrolysis gas heat exchanger is pyrolyzed
Gas entrance is connected with pyrolysis oven pyrolysis gas outlet, steam heat-exchanger and the high temperature of pyrolysis gas heat exchanger
Water out is all connected with preheater, pyrolysis gas heat exchanger pyrolysis gas outlet and the fuel gas inlet of vaporizer
It is connected.
The high-temperature product that vaporizer 5 and pyrolysis oven 6 are produced by residual neat recovering system 7 carries out waste heat recovery,
And recovery waste heat is used for preheater 4.
The high-temperature steam that vaporizer 5 produces is by steam heat-exchanger indirect heat exchange recovery waste heat, condensation
Liquid is input to advanced treatment system 8, and cooled flue gas is directly discharged, and the waste heat of recovery is with the form of high-temperature water
It is input to preheater 4.
Its high temperature pyrolysis gas produced of pyrolysis oven 6 leads to supercooled water and indirectly cools down recovery heat, cooling
After pyrolysis gas be input to the fuel gas pipeline of vaporizer 5 by gas outlet, the condensed fluid after cooling leads to
Subcooling condensate outlet is input to advanced treatment system 8.
Advanced treatment system 8 and steam heat-exchanger condensate outlet and pyrolysis gas heat exchanger condensed fluid
Outlet is connected.Advanced treatment system 8 arranges deep oxidation and processes pond, inside has jet-flow aeration head and dosing
Device, uses stripping and Fenton oxidation method realization to process target.Condensed water first passes through jet-flow aeration stripping,
Remove the ammonia nitrogen in water body, the Ammonia recovery storage that will produce；Then carry out by adding Fenton reagent
Deep oxidation processes, thoroughly the pollutant in degraded water body, and effluent quality reaches discharge standard requirement.
Another object of the present invention provides a kind of method utilizing said system to process percolate, as
Shown in Fig. 2, comprise the steps:
A, percolate is sent into described filter filtering, pyrolysis sent into by the solid that will filter to isolate
Stove generation pyrolytic reaction；
B, will filter after percolate send into described homogenizing pond homogenize；
C, will homogenize after percolate send into described vaporizer be evaporated concentrate, produce concentrated solution；
D, the described concentrated solution described pyrolysis oven of feeding is carried out pyrolytic reaction, produce pyrolysis gas, pyrolysis combustion
The composition of gas is mainly CH4, H2And CO.
Described method further comprises the steps of: the described preheater of percolate feeding before described step C and enters
Row preheating.
Described step C also produces steam, and described method further comprises the steps of: described steam and pyrolysis gas
Carry out recovery waste heat by indirect heat exchange, and the high-temperature water of recovery waste heat is delivered to described preheater.
Further, described method further comprises the steps of: the pyrolysis gas after cooling by described pyrolysis gas heat
The gas outlet of exchanger is transported to vaporizer.
Described method further comprises the steps of: sends the condensed fluid of described residual neat recovering system into the described degree of depth
Processing system carries out denitrogenation oxidation processes.
In the present invention:
Pretreatment system, changes other defecators into and still can complete the object of the invention.
If vaporizer used replaces to other vaporizers, the object of the invention still can be completed.
Advanced treatment system, changes other oxidation processes reactors into, still can complete the object of the invention.
Pyrolysis oven, changes other pyrolysis installations into and still can complete the object of the invention.
Processing system and the method for the percolate that the present invention provides can thoroughly process percolate,
Realize pollutant near-zero release；By concentrating pyrolysis processing percolate, treatment facility is simple, takes up an area relatively
Few；Whole system utilization efficient to heat energy, reduces processing cost；Non-secondary pollution produce are raw, ring
Protect effective.
It should be noted that each embodiment above by reference to described by accompanying drawing is only in order to illustrate the present invention
And unrestricted the scope of the present invention, it will be understood by those within the art that, without departing from this
The amendment on the premise of bright spirit and scope carried out the present invention or equivalent, all should contain
Within the scope of the present invention.Additionally, unless the context outside indication, the word bag occurred in the singular
Including plural form, vice versa.It addition, unless stated otherwise, then any embodiment whole or
A part can use in conjunction with all or part of of any other embodiments.
Claims (10)
1. the processing system of a percolate, it is characterised in that include pretreatment system, evaporation
Device and pyrolysis oven,
Described pretreatment system includes filter and homogenizing pond, and described filter includes that filter liquid goes out
Mouth and filter solid outlet, described homogenizing pond includes homogenizing pond entrance and the outlet of homogenizing pond, described mistake
Filter liquid outlet is connected with described homogenizing pond entrance；
Described vaporizer includes vaporizer liquid inlet, vaporizer liquid outlet and vaporizer steam (vapor) outlet,
Described vaporizer liquid inlet is connected to the outlet of described homogenizing pond；
Described pyrolysis oven includes that pyrolysis oven liquid inlet, pyrolysis oven solid inlet and pyrolysis oven pyrolysis gas go out
Mouthful, described pyrolysis oven liquid inlet is connected with described vaporizer liquid outlet, and described pyrolysis oven solid enters
Mouth is connected with described filter solid outlet.
System the most according to claim 1, it is characterised in that described system farther includes preheating
Device, described preheater includes preheater liquid inlet and preheater liquid outlet, described preheater liquid
Entrance is connected with the outlet of described homogenizing pond, and described preheater liquid outlet is connected with described vaporizer.
System the most according to claim 1, it is characterised in that described system farther includes waste heat
Recovery system, described residual neat recovering system includes steam heat-exchanger and pyrolysis gas heat exchanger；
Described steam heat-exchanger includes steam heat-exchanger steam inlet, steam heat-exchanger high-temperature water
Outlet and steam heat-exchanger condensate outlet, described pyrolysis gas heat exchanger includes pyrolysis gas heat exchange
Device pyrolysis gas entrance, pyrolysis gas heat exchanger pyrolysis gas outlet, pyrolysis gas heat exchanger high-temperature water export
With pyrolysis gas heat exchanger condensate outlet；
Described steam heat-exchanger steam inlet is connected with vaporizer steam (vapor) outlet, and described pyrolysis gas heat is handed over
Parallel operation pyrolysis gas entrance is connected with described pyrolysis oven pyrolysis gas outlet, described steam heat-exchanger and pyrolysis
The high-temperature water outlet of gas-heat exchanger is all connected with described preheater, and described pyrolysis gas heat exchanger is pyrolyzed
Gas outlet is connected with the fuel gas inlet of vaporizer.
System the most according to claim 3, it is characterised in that described system farther includes the degree of depth
Processing system, described advanced treatment system and described steam heat-exchanger condensate outlet and described pyrolysis
Gas-heat exchanger condensate outlet is connected.
System the most according to claim 1, it is characterised in that described system farther includes rubbish
Percolate collecting-tank, described percolate collecting-tank is connected with described filter.
6. utilizing the method that the arbitrary described system of claim 1-5 processes percolate, it is special
Levy and be, comprise the steps:
A, percolate is sent into described filter filtering, pyrolysis sent into by the solid that will filter to isolate
Stove generation pyrolytic reaction；
B, will filter after percolate send into described homogenizing pond homogenize；
C, will homogenize after percolate send into described vaporizer be evaporated concentrate, produce concentrated solution；
D, the described concentrated solution described pyrolysis oven of feeding is carried out pyrolytic reaction, produce pyrolysis gas.
Method the most according to claim 6, it is characterised in that further comprise the steps of: in described step
Before rapid C, percolate is sent into described preheater to preheat.
Method the most according to claim 6, it is characterised in that described step C also produces steam,
Described method further comprises the steps of: and by indirect heat exchange, described steam and pyrolysis gas is carried out recovery waste heat,
And the high-temperature water of recovery waste heat is delivered to described preheater.
Method the most according to claim 8, it is characterised in that after further comprising the steps of: cooling
Pyrolysis gas is transported to vaporizer by the gas outlet of described pyrolysis gas heat exchanger.
Method the most according to claim 8, it is characterised in that further comprise the steps of: described
The condensed fluid of residual neat recovering system is sent into described advanced treatment system and is carried out denitrogenation oxidation processes.
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| CN201610390241.0A CN105859009A (en) | 2016-06-02 | 2016-06-02 | Treatment system and method for landfill leachate |
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| CN108640386A (en) * | 2018-05-25 | 2018-10-12 | 源创环境科技有限公司 | A kind of low-concentration methane gas recycling of refuse landfill is in processing permeated liquid system |
| CN112110596A (en) * | 2020-10-20 | 2020-12-22 | 北京璟航环境技术有限公司 | Zero-discharge treatment method for landfill leachate |
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| CN112110596A (en) * | 2020-10-20 | 2020-12-22 | 北京璟航环境技术有限公司 | Zero-discharge treatment method for landfill leachate |
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