CN108793562A - A kind of landfill leachate resources processing complete set of equipments and technique - Google Patents
A kind of landfill leachate resources processing complete set of equipments and technique Download PDFInfo
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- CN108793562A CN108793562A CN201810670553.6A CN201810670553A CN108793562A CN 108793562 A CN108793562 A CN 108793562A CN 201810670553 A CN201810670553 A CN 201810670553A CN 108793562 A CN108793562 A CN 108793562A
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- 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
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
-
- 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
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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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of landfill leachate resources to handle complete set of equipments, including landfill leachate regulating reservoir and processing unit.Processing unit includes reaction tank, Dynamic membrane-separation system, immersion ultrafiltration pond, counter-infiltration system, roll-to-roll ultrafiltration system and nanofiltration recovery system connected in sequence.Concentration liquid zone and filtrate area are separated by reverse osmosis membrane inside counter-infiltration system, it concentrates liquid zone and is equipped with an inlet and a concentrated solution outlet, filtrate area is equipped with a filtrate (liquid, inlet connects the liquid outlet in immersion ultrafiltration pond, concentrated solution outlet is connect by outlet tube with the inlet of roll-to-roll ultrafiltration system, and rolling ultrafiltration membrane is equipped in roll-to-roll ultrafiltration system.The invention also discloses a kind of landfill leachate resources treatment process.The present invention by by dynamic membrane system, ultrafiltration, nanofiltration and it is reverse osmosis be combined together, the landfill leachate handled can be made to reach discharge standard, while recycling the utilities such as NaCl therein, realize recycling.
Description
Technical field
The present invention relates to landfill leachate treatment field, more particularly to a kind of landfill leachate resources handle complete set of equipments
And technique.
Background technology
The processing of percolated liquid in city refuse landfill is always very intractable in Landfill Site Design, operation and management asks
Topic.Percolate is product of the liquid in landfill yard gravity flowing, is mainly derived from the interior aqueous of precipitation and rubbish itself.City rubbish
Rubbish landfill percolate is a kind of high concentrated organic wastewater of complicated component, is directly discharged into environment if untreated, can cause
Serious environmental pollution.For the purpose of environmental protection, it is essential to carry out processing to percolate.
There are many treatment process of landfill leachate, and it is exactly reverse osmosis to be answered in garbage leachate treatment process with the most use
Method, existing reverse-osmosis treated are typically to cause landfill yard salinity long-term reverse osmosis obtained concentrated water recharge refuse landfill
Enrichment.Some northerly rubbish factories are because annual rainfall is less, and landfill leachate salt concentration is higher, and the concentrated water of recharge increases again
Add the salt content of percolate, while also resulting in the problem of its biodegradability declines.So needing exploitation one kind that can either make
Treated that filtrate reaches discharge standard, and the processing system and work of the wherein landfill leachate of utility can be recycled
Skill.
Invention content
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of landfill leachate resources processing complete set of equipments and works
Skill, can either so that treated, filtrate reaches discharge standard, and can recycle utility therein.
To achieve the goals above, the technical solution adopted by the present invention is as follows：
A kind of landfill leachate resources processing complete set of equipments, including landfill leachate regulating reservoir and processing unit.The place
Reason unit includes reaction tank connected in sequence, Dynamic membrane-separation system, immersion ultrafiltration pond, counter-infiltration system, roll-to-roll ultrafiltration system
System and nanofiltration recovery system.Concentration liquid zone and filtrate area are separated by reverse osmosis membrane inside the counter-infiltration system, it is described
Concentration liquid zone be equipped with an inlet and a concentrated solution outlet, the filtrate area be equipped with a filtrate (liquid, the inlet
The liquid outlet in immersion ultrafiltration pond is connected, the concentrated solution outlet is connected by outlet tube and the inlet of roll-to-roll ultrafiltration system
It connects.Rolling ultrafiltration membrane is equipped in the roll-to-roll ultrafiltration system.
Further, in order to reduce the flow velocity of concentrate, mitigate the filter pressure of roll-to-roll ultrafiltration system, the outlet tube
It is equipped with regulating valve, the outlet tube is equipped in the front end of the regulating valve and seals the relief tube being connected to, the relief tube with it
It is equipped with relief valve.
Further, the roll-to-roll ultrafiltration internal system is separated into liquid zone by rolling ultrafiltration membrane and penetrates liquid zone,
It is preferred that the big flux high pressure rolling ultrafiltration membrane of rolling, is equipped with inlet and concentrated solution outlet, concentrated solution outlet passes through pipeline into liquid zone
It is connected to the first intermediate pool.It being exported equipped with permeate through liquid zone, permeate outlet is connected to the second intermediate pool by pipeline, the
The liquid outlet of two intermediate pools is connected to the inlet of nanofiltration recovery system.
Further, the nanofiltration recovery system includes nanofiltration pond, the first MVR evaporators and the 2nd MVR evaporators, institute
The nanofiltration pond stated is separated into monovalent salt pool and divalent salts pool by NF membrane.The monovalent salt pool be equipped with inlet and
Monovalence brine outlet, monovalence brine outlet are connected to the first MVR evaporators by pipeline.The divalent salts pool is equipped with divalent
Brine outlet, divalent brine outlet are connected to the 2nd MVR evaporators by pipeline.
Further, the immersion ultrafiltration pond is equipped with an inlet and a liquid outlet, the feed liquor in immersion ultrafiltration pond
Mouth is connect by pipeline with the liquid outlet of Dynamic membrane-separation system, and the liquid outlet in immersion ultrafiltration pond passes through pipeline and reverse osmosis system
The inlet of system connects.Submerged ultrafiltration component and aeration tube, the aeration tube are equipped in the immersion ultrafiltration pond
It is located at the lower section of submerged ultrafiltration component, the external ozone generator of the aeration tube.
Further, the Dynamic membrane-separation system includes stoste slot, Dynamic Membrane hopper, Dynamic membrane-separation unit, filter
Flow container and doctor unit.The Dynamic membrane-separation unit includes rack, forms a waste liquid tank in the rack, in waste liquid tank
Equipped with a cyclic annular thin-walled rotary drum, the rotary drum is equipped with percolate collection tubes, the filter in center axis rotation, the rotary drum
Liquid collecting pipe is connected to the inlet of filtrate tank by pipeline.Several are offered on rotary drum with the percolate collection tubes to be connected
Filtrate hole, be enclosed at least one layer of filter cloth on the rotary drum outer ring surface, formed on filter cloth formed by dynamic coating it is dynamic
State UF membrane layer.The stoste slot and Dynamic Membrane hopper is connected to waste liquid tank by pipeline, and the filtrate hole passes through branch pipe
Connect the percolate collection tubes of rotary drum.The doctor unit includes a scraper, and the doctor unit is set in rack, scraper energy
Enough to be moved forward or back along the rotary drum, the Dynamic membrane-separation unit side is equipped with a solid waste discharge mouth, described
Solid waste discharge mouth connects the doctor unit.The top of the stoste slot goes out liquid by what pipeline was connected to reaction tank
Mouthful.
Further, the filtrate tank is closed filtrate tank, and filtrate tank top is connected to vacuum by pipeline
Pump, the vacuum pump are connected with a gas treatment equipment, activated carbon are equipped in the gas treatment equipment.The rack
Top is covered with a cover, and the side of the cover opens up solid waste discharge mouth, heating device, institute are equipped with below the cover
The heating device stated is made of several infrared heating lamps or several immerging metal tube heaters.The filtrate pipe includes filtrate
Branch pipe and backwash manifold, the filtrate branch pipe are equipped with the first valve, and the backwash manifold is equipped with water pump and the second valve
Door.
Further, the stoste slot is double-layer structure, is installed on the lateral wall of the stoste slot internal layer several super
Acoustic wave transducer, several ultrasonic oscillators are connected with the supersonic generator outside stoste slot.The waste liquid tank is in circular arc
Shape or convex polygonal shape, are installed with several ultrasonic oscillators on the outer wall of waste liquid tank, several ultrasonic oscillators be set to rack
External supersonic generator is connected.The coating of the Dynamic Membrane hopper is diatomite, kaolin, fine grained activated carbon, pearl
The mixture of one or more of rock, flyash, MnO2, TiO2, ZrO2.
Further, the reaction tank be equipped with the first medicine-adding bin and the second medicine-adding bin, first medicine-adding bin and
Second medicine-adding bin is connected to by pipeline with reaction tank respectively, the medicament in first medicine-adding bin be FeCl3 or calcium hydroxide, it is described
Medicament in second medicine-adding bin is Al2 (SO4) 3 or aluminium polychloride.The counter-infiltration system front end is equipped with third medicine-adding bin,
The third medicine-adding bin is connected to by pipeline with the inlet of counter-infiltration system, and the medicament in the third medicine-adding bin is scale inhibition
Agent.It is equipped with agitating device in first medicine-adding bin, the second medicine-adding bin and third medicine-adding bin.
The invention also includes the techniques for handling landfill leachate using above-mentioned landfill leachate resources processing complete set of equipments.
Compared with prior art, the present invention has the advantages that：
1, by by dynamic membrane system, ultrafiltration, nanofiltration and it is reverse osmosis be combined together, the row up to standard of landfill leachate may be implemented
It puts, the utilities such as NaCl therein can also be recycled in the filtrate for needing recharge refuse landfill originally, realize recycling
It utilizes；
2, it before ultrafiltration system, is recycled more than reverse osmosis concentrated water by the way that regulating valve, relief tube and relief valve etc. is arranged
Pressure, while the carrying pressure of back segment rolling ultrafiltration membrane can also be mitigated, realize most efficient filtering；
3, the application of Dynamic Membrane makes filter medium become filter screen and precoated shet from single filter screen, due to Dynamic Membrane（Precoating
Layer）It is made of subparticle, thus constitutes countless micropores and cooperatively complete filter medium with the diluter strainer of mesh
Work can obtain the high filtrate of clarity under high vacuum effect；
4, it is provided with ultrasonic system, improves the treatment effeciency of separation of solid and liquid：Stoste groove ultrasonic system, can play heating
The effect of solidliquid mixture, the solidliquid mixture processing of particularly suitable north of china in winter, while promoting the stirring of liquid so that stoste
It is more uniformly distributed；Treatment trough ultrasonic system is conducive to be separated by solid-liquid separation, and improves treatment effeciency；
5, in the top of rotary drum, cover is set, entire rotary drum is covered, heating device is provided with below cover；On the one hand it purifies
Operating space, the smell diffusion for avoiding siccative from generating, pollutes environment.On the other hand, under heating device effect, siccative is heated
And moisture therein so that partial moisture is fallen as vapor, accelerates the desiccation of material；
6, Dynamic membrane-separation system is provided with back purge system, backwash can be carried out to rotary drum, to effectively clean filter cloth, energy
It is enough to restore separative efficiency in time.
Description of the drawings
Fig. 1 is the structural schematic diagram that landfill leachate resources handle complete set of equipments.
Fig. 2 is the structural schematic diagram of Dynamic membrane-separation system of the present invention.
Fig. 3 is the rotary drum side view of Dynamic membrane-separation system.
Primary clustering symbol description：1, landfill leachate regulating reservoir；2, reaction tank；21, the first medicine-adding bin；22, second adds
Explosive barrel；3, Dynamic membrane-separation system；30, Dynamic membrane-separation unit；301, rack；302, waste liquid tank；3021, rotary drum；3022, it filters
Liquid collecting pipe；3023, filter cloth；3024, Dynamic membrane-separation layer；3025, branch pipe；303, cover；3031, solid waste discharge
Mouthful；304, infrared heating lamp；305, the first ultrasonic oscillator；306, the first supersonic generator；31, stoste slot；311,
Two ultrasonic oscillators；312, the second supersonic generator；32, Dynamic Membrane hopper；33, filtrate tank；331, filtrate tank；3311, it filters
Liquid branch pipe；33111, the first valve；3312, backwash manifold；33121, water pump；33122, the second valve；332, vacuum pump；333,
Gas treatment equipment；34, scraper；4, immersion ultrafiltration pond；401, inlet；402, liquid outlet；41, submerged ultrafiltration group
Part；42, aeration tube；421, ozone generator；5, counter-infiltration system；50, big flux high pressure reverse osmosis membrane；51, liquid zone is concentrated；
511, inlet；512, concentrated solution outlet；513, outlet tube；5131, regulating valve；514, relief tube；5141, relief valve；52, it filters
Liquid zone；521, filtrate (liquid；53, third medicine-adding bin；6, roll-to-roll ultrafiltration system；60, the big flux high pressure ultra film of rolling；61, into
Liquid zone；611, inlet；612, concentrated solution outlet；62, through liquid zone；621, permeate exports；7, nanofiltration recovery system；70,
NF membrane；71, nanofiltration pond；711, monovalent salt pool；7111, inlet；7112, monovalence brine outlet；712, divalent salts pool；
7121, divalent brine outlet；72, the first MVR evaporators；73, the 2nd MVR evaporators；81, the first water pump；82, the second water pump；
83, third water pump；84, the 4th water pump；91, the first intermediate pool；92, the second intermediate pool；10, blender.
Specific implementation mode
With reference to the accompanying drawings and detailed description, the present invention will be further described.
As shown in Figs. 1-3, a kind of landfill leachate resources handle complete set of equipments, including sequentially connected landfill leachate
Regulating reservoir 1, the first water pump 81, reaction tank 2, Dynamic membrane-separation system 3, the second water pump 82, immersion ultrafiltration pond 4, third water pump
83, counter-infiltration system 5, roll-to-roll ultrafiltration system 6, the 4th water pump 84 and nanofiltration recovery system 7.
Reaction tank 2 is equipped with the first medicine-adding bin 21 and the second medicine-adding bin 22, and the first medicine-adding bin 21 and the second medicine-adding bin 22 divide
It is not connected to reaction tank 2 by pipeline, the medicament in the first medicine-adding bin 21 is calcium hydroxide, and the medicament in the second medicine-adding bin 22 is poly-
Close aluminium chloride.5 front end of counter-infiltration system is equipped with third medicine-adding bin 53, and third medicine-adding bin 53 passes through pipeline and counter-infiltration system 5
Inlet 511 is connected to, and the medicament in third medicine-adding bin 53 is antisludging agent.First medicine-adding bin 21, the second medicine-adding bin 22, third dosing
It is equipped with blender 10 in bucket 53, landfill leachate regulating reservoir 1 and reaction tank 2.
Dynamic membrane-separation system 3 includes Dynamic membrane-separation unit 30, stoste slot 31, Dynamic Membrane hopper 32,33 and of filtrate tank
Scraper 34.Dynamic membrane-separation unit 30 includes rack 301, and a waste liquid tank 302 is formed in rack 301, and waste liquid tank 302 is in circular arc
Shape shape, is installed with several first ultrasonic oscillators 305 on the outer wall of waste liquid tank 302, several first ultrasonic oscillators 305 with set
The first supersonic generator 306 outside rack 301 is connected.
A circular thin-walled rotary drum 3021 is equipped in waste liquid tank 302, rotary drum 3021 is around central shaft（It is not shown in figure）Rotation,
Percolate collection tubes 3022 are equipped in rotary drum 3021, percolate collection tubes 3022 are connected to the feed liquor of filtrate tank 33 by filtrate pipe 331
Mouthful, filtrate pipe 331 includes filtrate branch pipe 3311 and backwash manifold 3312, and filtrate branch pipe 3311 is equipped with the first valve 33111,
Backwash manifold 3312 is equipped with water pump 33121 and the second valve 33122.Several and percolate collection tubes are offered on rotary drum 3021
3022 filtrate holes being connected（It is not shown in figure）, one layer of filter cloth 3023 is enclosed on 3021 outer ring surface of rotary drum, on filter cloth 3023
The Dynamic membrane-separation layer 3024 formed by dynamic coating is formed, the coating in Dynamic Membrane hopper 32 is flyash and ZrO2
Mixture.
301 top of rack is covered with a cover 303, and the side of cover 303 opens up solid waste discharge mouth 3031, scraper 34
In rack 301, scraper 34 can be moved forward or back along rotary drum 3021, and solid waste discharge mouth 3031 connects scraper 34.
303 lower section of cover is equipped with heating device, and heating device is made of several infrared heating lamps 304.Stoste slot 31 and Dynamic Membrane
Hopper 32 is connected to waste liquid tank 302 by pipeline, and filtrate hole connects the percolate collection tubes 3022 of rotary drum 3021 by branch pipe 3025.
Stoste slot 31 is double-layer structure, and several second ultrasonic oscillators 311 are installed on the lateral wall of 31 internal layer of stoste slot,
Several second ultrasonic oscillators 311 are connected with the second supersonic generator 312 outside stoste slot 31.Stoste slot 31 it is upper
Portion is connected to the liquid outlet of reaction tank 2 by pipeline.Filtrate tank 33 is closed filtrate tank, and 33 top of filtrate tank is connected by pipeline
To vacuum pump 332, vacuum pump 332 is connected with a gas treatment equipment 333, and activated carbon is equipped in gas treatment equipment 333.
Concentration liquid zone 51 and filtrate area 52 are separated by big flux high pressure reverse osmosis membrane 50 inside counter-infiltration system 5, it is dense
Contracting liquid zone 51 is equipped with inlet 511 and concentrated solution outlet 512, and filtrate area 52 is equipped with filtrate (liquid 521, the connection of inlet 511 the
Three water pumps 83.The concentrated solution outlet 512 of counter-infiltration system 5 is connected by outlet tube 513 and the inlet 611 of roll-to-roll ultrafiltration system 6
It connects, outlet tube 513 is equipped with regulating valve 5131, and outlet tube 513 is equipped in the front end of regulating valve 5131 and seals letting out of being connected to it
Pressure pipe 514, relief tube 514 are equipped with relief valve 5141.
It is separated into liquid zone 61 by the big flux high pressure ultra film of rolling 60 inside roll-to-roll ultrafiltration system 6 and penetrates liquid zone
62, it is equipped with inlet 611 and concentrated solution outlet 612 into liquid zone 61, the concentrated solution outlet 612 of roll-to-roll ultrafiltration system 6 passes through pipeline
It is connected to the first intermediate pool 91, the filtrate recharge that the first intermediate pool 91 is collected into refuse landfill.It is equipped with through liquid zone 62 saturating
Liquid outlet 621 is crossed, permeate outlet 621 is connected to the second intermediate pool 92 by pipeline, and the liquid outlet of the second intermediate pool 92 passes through
Pipeline is connected to the 4th water pump 84, and the 4th water pump 84 is connected to the inlet that sodium filters recovery system 7 by pipeline.
Nanofiltration recovery system 7 includes nanofiltration pond 71, the first MVR evaporators 72 and the 2nd MVR evaporators 73, and nanofiltration pond 71 is logical
It crosses NF membrane 70 and is separated into monovalent salt pool 711 and divalent salts pool 712.Monovalent salt pool 711 is equipped with inlet 7111 and one
Valence brine outlet 7112, monovalence brine outlet 7112 are connected to the first MVR evaporators 72 by pipeline.Divalent salts pool 712 is set
There are divalent brine outlet 7121, divalent brine outlet 7121 to be connected to the 2nd MVR evaporators 73 by pipeline.
Immersion ultrafiltration pond 4 is equipped with an inlet 401 and a liquid outlet 402, and the inlet 401 in immersion ultrafiltration pond 4 is logical
Piping is connected to the second water pump 82, and the second water pump 82 is connect by pipeline with the liquid outlet of Dynamic membrane-separation system 3.Immersion
Submerged ultrafiltration component 41 and aeration tube 42 are equipped in ultrafiltration pond 4, aeration tube 42 is located under submerged ultrafiltration component 41
Side, 42 external ozone generator 421 of aeration tube.
When specifically used, landfill leachate enters reaction tank after the collection of landfill leachate regulating reservoir 1, through the first water pump 81
2, the aluminium polychloride in the calcium hydroxide of the first explosive barrel 21 and the second explosive barrel 22 enters reaction tank 2, calcium hydroxide and polymerization by pump
Aluminium chloride is reacted with landfill leachate in reaction tank 2.After coagulating, mixed liquor enter in Dynamic membrane-separation system 3 into
Row is separated by solid-liquid separation.
Setting blender 10 is stirred evenly for stirring pre- coating in the Dynamic Membrane hopper 32 of Dynamic membrane-separation system 3
Coating is under the action of water pump, into the waste liquid tank 302 of Dynamic membrane-separation system 3.Pending landfill leachate is in stoste
In slot 31, under the action of ultrasonic wave, temperature gets a promotion, and biological cell therein is by broken wall.Later, landfill leachate is through pipe
Road flows into waste liquid tank 302.
Before carrying out Dynamic membrane-separation, the precoating of advanced Mobile state UF membrane layer 3024, by filter cloth 3023 and Dynamic Membrane point
Absciss layer 3024 is completed to be separated by solid-liquid separation jointly.Under the swabbing action of vacuum pump 332, gradually sucted in 3021 outer surface of rotary drum required
3024 thickness of Dynamic membrane-separation layer wanted, reinjects landfill leachate, under vacuum suction effect, proceeds by separation of solid and liquid.
Filtered solution is inhaled into 3021 internal channel of rotary drum and is pumped, and the coagulum in landfill leachate is attracted to Dynamic membrane-separation layer 3024
Surface is scraped off by scraper 34.34 auto-feed of scraper constantly scrapes off contaminated dynamic film coating layer 3024, when Dynamic Membrane applies
After the bed of material 3024 is scraped clean, apart from 3021 surface certain distance of rotary drum（About 15mm）When, scraper 34 is automatically stopped feeding, so
Withdrawing afterwards re-starts precoating, into next working cycles.Filtered solution is under the suction of vacuum pump 332, into each branch pipe
3025, it is extracted subsequently into percolate collection tubes 3022.
When Dynamic membrane-separation system 3 is run to after a certain period of time, filter cloth 3023 is blocked, and separative efficiency declines, thus
It needs to carry out backwash, to restore separative efficiency, closes vacuum pump 332 and the first valve 33111 at this time, open 33121 He of water pump
Second valve 33122, filtrate are extracted from filtrate tank 33, into rotary drum 3021, are backwashed to filter cloth 3023.
Collecting solid castoff post-processing after the separation of Dynamic membrane-separation system 3, and filtered solution then enters subsequent processing.
It is introduced into immersion ultrafiltration pond 4 to be filtered, ozone generator 421 provides gas, carries out the processing such as oxidation dehydration, treated
Filtered water enters back into counter-infiltration system 5, and big flux high pressure reverse osmosis membrane 50, processed permeate is arranged in counter-infiltration system 5
Qualified discharge is further processed, and waste water adds antisludging agent before entering counter-infiltration system 5 by third explosive barrel 53.It is flowed with height
The concentrate of speed enters roll-to-roll ultrafiltration system 6, and regulating valve 5131, pressure release are arranged between counter-infiltration system 5 and roll-to-roll ultrafiltration system 6
Pipe 514 and relief valve 5141, to reduce the flow velocity of concentrate, in order to the filtering in ultrafiltration pond 6.Setting rolling is big in ultrafiltration pond 6
Flux high pressure ultra film 60, the concentrate retained by the big flux high pressure ultra film 60 of rolling enter the first intermediate pool 91, here
Concentrate be largely humic acid, other organic matters etc., in recharge to soot, saliferous permeate enter the second intermediate pool
92, subsequently into being handled in sodium salt recycling system 7.NF membrane 70 is set in nanofiltration recovery system 7, passes through NF membrane 70
Monovalence brine is evaporated to obtain the Nacls such as NaCl through pipeline into the first MVR evaporators 72, does not pass through the divalent salts of NF membrane 70
Water is evaporated to obtain Nacl through pipeline into the 2nd MVR evaporators 73, realizes the recycling of landfill leachate.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
In vain, it is not departing from the spirit and scope of the present invention defined by the appended claims, in the form and details to this hair
It is bright to make a variety of changes, it is protection scope of the present invention.
Claims (10)
1. a kind of landfill leachate resources handle complete set of equipments, including landfill leachate regulating reservoir and processing unit, feature
It is：The processing unit includes reaction tank connected in sequence, Dynamic membrane-separation system, immersion ultrafiltration pond, reverse osmosis system
System, roll-to-roll ultrafiltration system and nanofiltration recovery system are separated into concentration liquid zone inside the counter-infiltration system by reverse osmosis membrane
With filtrate area, the concentration liquid zone is equipped with an inlet and a concentrated solution outlet, and the filtrate area is equipped with a filtrate (liquid,
The liquid outlet in the inlet connection immersion ultrafiltration pond, the concentrated solution outlet pass through outlet tube and roll-to-roll ultrafiltration system
Inlet connection, rolling ultrafiltration membrane is equipped in the roll-to-roll ultrafiltration system.
2. a kind of landfill leachate resources as described in claim 1 handle complete set of equipments, it is characterised in that：Described goes out liquid
Pipe is equipped with regulating valve, and the outlet tube is equipped in the front end of the regulating valve and seals the relief tube being connected to, the pressure release with it
Pipe is equipped with relief valve.
3. a kind of landfill leachate resources as described in claim 1 handle complete set of equipments, it is characterised in that：The rolling
It is separated into liquid zone by rolling ultrafiltration membrane inside ultrafiltration system and penetrates liquid zone, be equipped with inlet into liquid zone and concentrate goes out
Mouthful, concentrated solution outlet is connected to the first intermediate pool by pipeline, is exported equipped with permeate through liquid zone, permeate outlet passes through pipe
Road is connected to the second intermediate pool, and the liquid outlet of the second intermediate pool is connected to the inlet of nanofiltration recovery system.
4. a kind of landfill leachate resources as claimed in claim 3 handle complete set of equipments, it is characterised in that：The nanofiltration
Recovery system includes nanofiltration pond, the first MVR evaporators and the 2nd MVR evaporators, and the nanofiltration pond is separated by NF membrane
Monovalent salt pool and divalent salts pool, the monovalent salt pool are equipped with inlet and monovalence brine outlet, monovalence brine outlet
The first MVR evaporators are connected to by pipeline, the divalent salts pool is equipped with divalent brine outlet, and divalent brine outlet passes through
Pipeline is connected to the 2nd MVR evaporators.
5. a kind of landfill leachate resources as described in claim 1 handle complete set of equipments, it is characterised in that：The submergence
Formula ultrafiltration pond is equipped with an inlet and a liquid outlet, and the inlet in immersion ultrafiltration pond passes through pipeline and Dynamic membrane-separation system
Liquid outlet connects, and the liquid outlet in immersion ultrafiltration pond is connected by the inlet of pipeline and counter-infiltration system, the immersion
Submerged ultrafiltration component and aeration tube are equipped in ultrafiltration pond, the aeration tube is located at the lower section of submerged ultrafiltration component,
The external ozone generator of the aeration tube.
6. a kind of landfill leachate resources as described in claim 1 handle complete set of equipments, it is characterised in that：Described is dynamic
State film separation system includes stoste slot, Dynamic Membrane hopper, Dynamic membrane-separation unit, filtrate tank and doctor unit, the dynamic
Film separation unit includes rack, and a waste liquid tank is formed in the rack, and a cyclic annular thin-walled rotary drum is equipped in waste liquid tank, described
Rotary drum is equipped with percolate collection tubes in center axis rotation, the rotary drum, and the percolate collection tubes are connected to filter by pipeline
The inlet of flow container offers several filtrate holes being connected with the percolate collection tubes, the rotary drum outer ring surface on rotary drum
On be enclosed at least one layer of filter cloth, the Dynamic membrane-separation layer formed by dynamic coating, the stoste slot are formed on filter cloth
Waste liquid tank is connected to by pipeline with Dynamic Membrane hopper, the filtrate hole connects the percolate collection tubes of rotary drum, institute by branch pipe
The doctor unit stated includes a scraper, and the doctor unit is set in rack, and scraper can be moved forward or back along the rotary drum,
The Dynamic membrane-separation unit side be equipped with a solid waste discharge mouth, the solid waste discharge mouth connection described in
The top of doctor unit, the stoste slot is connected to the liquid outlet of reaction tank by pipeline.
7. a kind of landfill leachate resources as claimed in claim 6 handle complete set of equipments, it is characterised in that：The filtrate
Tank is closed filtrate tank, and filtrate tank top is connected to vacuum pump by pipeline, and the vacuum pump is connected with a gas
Processing unit, the gas treatment equipment is interior to be equipped with activated carbon, and the upper rack is covered with a cover, the side of the cover
While opening up solid waste discharge mouth, heating device is equipped with below the cover, the heating device is by several infrared rays
Heating lamp or several immerging metal tube heater compositions, the filtrate pipe include filtrate branch pipe and backwash manifold, the filtrate
Branch pipe is equipped with the first valve, and the backwash manifold is equipped with water pump and the second valve.
8. a kind of landfill leachate resources as claimed in claim 6 handle complete set of equipments, it is characterised in that：The stoste
Slot is double-layer structure, is installed with several ultrasonic oscillators on the lateral wall of the stoste slot internal layer, several ultrasonic oscillators with set
Supersonic generator outside stoste slot is connected, and the waste liquid tank is in arc-shaped or convex polygonal shape, waste liquid tank it is outer
Several ultrasonic oscillators are installed on wall, several ultrasonic oscillators are connected with the supersonic generator set on Shelf External, described
The coating of Dynamic Membrane hopper is in diatomite, kaolin, fine grained activated carbon, perlite, flyash, MnO2, TiO2, ZrO2
One or more kinds of mixtures.
9. a kind of landfill leachate resources as described in claim 1 handle complete set of equipments, it is characterised in that：The reaction
Pond is equipped with the first medicine-adding bin and the second medicine-adding bin, first medicine-adding bin and the second medicine-adding bin respectively by pipeline with react
Pond is connected to, and the medicament in first medicine-adding bin is FeCl3 or calcium hydroxide, and the medicament in second medicine-adding bin is Al2 (SO4)
3 or aluminium polychloride, the counter-infiltration system front end is equipped with third medicine-adding bin, the third medicine-adding bin by pipeline with it is anti-
The inlet of osmosis system is connected to, and the medicament in the third medicine-adding bin is antisludging agent, first medicine-adding bin, the second dosing
It is equipped with agitating device in bucket and third medicine-adding bin.
10. a kind of landfill leachate resources treatment process, it is characterised in that：Described in any one of claim 1-9
Landfill leachate resources handle complete set of equipments processing.
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| CN201810670553.6A CN108793562A (en) | 2018-06-26 | 2018-06-26 | A kind of landfill leachate resources processing complete set of equipments and technique |
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