CN107200440A - A kind of leachate processing method in power plant of burning away the refuse - Google Patents
A kind of leachate processing method in power plant of burning away the refuse Download PDFInfo
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- CN107200440A CN107200440A CN201710540628.4A CN201710540628A CN107200440A CN 107200440 A CN107200440 A CN 107200440A CN 201710540628 A CN201710540628 A CN 201710540628A CN 107200440 A CN107200440 A CN 107200440A
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/10—Temperature conditions for biological treatment
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of percolate process step in power plant of burning away the refuse：1）The percolate that will burn away the refuse is passed through settling pit and pre-processed, and removes substantial amounts of sand setting in sewage；2）Percolate is passed through regulating reservoir and carries out quenched, the influent concentration of sewage was kept PH in 2 days between 56；3）Into medium temperature pond, it is passed through steam regulation temperature between 35 39 degrees Celsius, to cause sewage temperature uniform by agitator in medium temperature pond；4）Percolate of burning away the refuse after medium temperature pond is handled carries out anaerobic digestion into anaerobic reactor, and by various complicated organic matter decomposition and inversions into biogas, the percolate that makes to burn away the refuse obtains preliminary purification；5）Denitrification/digestion process；6）Filtering.The present invention improves the producing water ratio for power plant percolation liquid treating system of burning away the refuse, it is ensured that the amount of remaining concentrate can be completely consumed in power plant of burning away the refuse, and severe contamination environment is arranged outside preventing and treating concentrate.
Description
Technical field
The invention belongs to technical field of sewage, more particularly to a kind of percolate in power plant of burning away the refuse
Processing method.
Background technology
The percolate in power plant of burning away the refuse is a kind of intractable high concentrated organic wastewater, at present in oozing for using
Filtrate processing device is generally that the producing water ratio of complex disposal process and existing percolation liquid treating system is low, at the big sewage of floor space
Manage device.Filed in 28 days November in 2012, the A of Application No. CN 102795746 patent of invention garbage incinerating power plant oozes
Filtrate processing method and its device disclose a kind of leachate processing method and its device, and percolate stoste is sent into raw water
Regulating reservoir, coagulating system, one-level UBF reactors, one-level UBF reactor water outlets intermediate pool, two grades of UBF reactions
Device, two grades of UBF reactor water outlets intermediate pools, anti-nitration reaction pond, nitration reaction pond, built-in MBR systems, nanofiltration systems
Handled.But the process method step of the percolate is cumbersome, its apparatus structure is complicated, occupy larger place, and producing water ratio is low
Cause concentration liquid measure big, severe environmental pollution problem can be caused by being arranged outside concentrate.
The content of the invention
The purpose of the present invention aims to provide a kind of leachate processing method in the high power plant of burning away the refuse of producing water ratio, with gram
Take weak point of the prior art.
To achieve the above object, technical scheme provided by the present invention is：At a kind of percolate in power plant of burning away the refuse
Reason method, it is characterised in that comprise the following steps：
S1）The percolate that will burn away the refuse is passed through settling pit and pre-processed, and removes substantial amounts of sand setting in sewage；
S2）By pretreated percolate of burning away the refuse be passed through regulating reservoir carry out it is quenched, the influent concentration of sewage was protected in 2 days
PH is held between 5-6；
S3）Percolate gravity flow of burning away the refuse after will be quenched enters medium temperature pond, and it is that 35-39 is Celsius to be passed through steam regulation temperature
Between degree, cause sewage temperature uniform by agitator in medium temperature pond, to provide the existence temperature that anaerobic bacteria is most suitable
Degree；
S4）Percolate of burning away the refuse after medium temperature pond is handled is lifted into anaerobic reactor by screw rod elevator pump and carried out
Anaerobic digestion, by various complicated organic matter decomposition and inversions into biogas, the percolate that makes to burn away the refuse obtains preliminary purification；
S5）Anaerobic reactor water outlet carries out denitrification/digestion process；
S6）Filtration treatment is carried out to the water outlet after denitrification/digestion process.
In the leachate processing method in above-mentioned power plant of burning away the refuse, in step S6）In, pass through outer pipe type milipore filter first
System is filtered, and the clear liquid after filtering is filtered by sodium filter membrane system, removes most of organic matter and high price in percolate
State salinity, the effluent clear solution after the filtering of sodium filter membrane system is filtered by seawater desalination reverse osmosis membranous system, anti-by desalinization
Ion-permeable rank isolates the production water of cleaning for recirculated cooling water moisturizing；Nanofiltration membrane system and seawater desalination reverse osmosis membrane system
The concentrate that system is produced first passes through depth softening membranous system and removes substantial amounts of heavy metal in concentrate, subsequently into dish-style filter membrane
System, acts on small molecule particulate matter, ion of solubilised state for allowing in sewage etc. through excess pressure and is trapped within concentrated water side, transmission
Fresh water is collected the filtered fluid as cleaning for recirculated cooling water moisturizing, and remaining concentrate carries out dry ash damping or flown
Ash solidification returns spray incinerator or enters incinerator with rubbish.
In the leachate processing method in above-mentioned power plant of burning away the refuse, settling pit, anaerobic reactor, medium temperature pond,
Sludge produced by outer pipe type ultrafiltration membrane system is collected inflow sludge storage pool, is then dehydrated by sludge dewatering equipment so that
Moisture percentage in sewage sludge rear stove that enters below 80% is burned or transported outward；Filtrate after sludge dewatering equipment is back to regulating reservoir.
The anaerobic reactor includes having anaerobe to occur biochemical reaction, institute with waste water in anaerobic fermentation tank, tank body
State and moisture trap is set on the tank deck of anaerobic fermentation tank, tank base is provided with above mud discharging device, mud discharging device and is provided with
Moisture trap is connected from water cloth water installations from water cloth water installations, the moisture trap by return duct with moisture trap,
Parallel up and down in the tank body of anaerobic fermentation tank to be provided with two three phase separators, the three phase separator is pie, two three-phases
Cyclone separator arrangement is identical and installation direction differs 90 degree, and two three phase separators are connected by discharge with moisture trap, are made
The gas produced in three phase separator enters in moisture trap along discharge.
The tank body top is provided for placing the bearing support of three phase separator, sets anti-floating to fill above three phase separator
Put, overflow mechanism is set above the anti-floating system, the overflow mechanism connects drainage pipeline, and the three phase separator includes card
Plate, triangular-notch weir, plenum chamber, three layers of the triangular-notch weir point of some strips interlock in plenum chamber both sides arrangement, adjacent two layers triangular-notch weir
Arrangement, the clamp is used to fix each triangular-notch weir.
The each triangular-notch weir of the plenum chamber side correspondence is provided with air inlet, and mud guard is set on air inlet.
The beneficial effects of the invention are as follows：
The present invention improves the producing water ratio for power plant percolation liquid treating system of burning away the refuse, it is ensured that the amount of remaining concentrate can burn
Burn in refuse-burning plant and be completely consumed, severe contamination environment is arranged outside preventing and treating concentrate.
The device of the present invention is rationally distributed, solves the problem of conventional three phase separator volume is big, thickness is high, with reference to shallow-layer reason
By with Henry's law, three phase separator volume is reduced, thus effectively reduce upflow anaerobic sludge blanket process height, improve it is highly concentrated
Spend the efficiency of gas-liquid-solid separation in organic wastewater.It effectively improves the separation of solid and liquid rate in upflow anaerobic sludge blanket process, it is ensured that
Organic loading can normally be run in follow-up processing so that whole system is normally run.
This percolate anaerobic ferment devices can ensure that the producing water ratio of whole percolation liquid treating system reaches 90%.Ensure
The COD clearance of water, reduces the processing load of follow-up sewage disposal stage.By present invention can ensure that entirely burning
Burn the leachate zero-emission of refuse-burning plant.Solve the installation area excessive, producing water ratio is low to cause diafiltration liquid measure big, oozes
The problem of row can cause severe environmental pollution outside filtrate.
Brief description of the drawings
Fig. 1 is the leachate processing method flow chart of the present invention.
Fig. 2 is percolate anaerobic ferment devices structural representation of the invention.
Fig. 3 is three phase separator structural representation of the invention.
Fig. 4 is Fig. 3 A-A sectional views.
Fig. 5 is Fig. 3 B-B sectional views.
Fig. 6 is triangular-notch weir mounting structure schematic diagram of the invention.
Fig. 7 is triangular-notch weir stereogram of the invention.
Fig. 8 is the bottom water inlet structure schematic diagram of the percolate anaerobic ferment devices of the present invention.
Each label of view is expressed as follows：
Mud discharging device 1, moisture trap is from water cloth water installations 2, return duct 3, anaerobic fermentation tank 4, circulation line water collector 5, branch
Bolster 6, water outlet blast pipe 7, overflow mechanism 8, two layers of discharge 9, moisture trap 10, discharge 11, platform railing 12, anti-floating
Device 13, two layers of three phase separator 14, one layer of three phase separator 15, gas collection flanged pipe 16, flow back pipe flange 17, triangular-notch weir 18,
Sealing plate 19, clamp 20, water distribution branch pipe 21, mud guard 22.
In accompanying drawing, straight arrows represent the handling process route of percolate, and dotted arrow represents the handling process road of sludge
Line, dash-dot arrows represent the handling process route of concentrate, and round dot line arrow represents the processing stream of steam, biogas or foul smell
Journey route.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " front and rear ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should broadly understood, for example, it may be being fixedly connected.Can also be detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
The concrete meaning of invention.
As shown in figures 1-8, the present invention provides a kind of leachate processing method in power plant of burning away the refuse, including following step
Suddenly：
A. the percolate that will burn away the refuse is passed through settling pit and pre-processed, and removes substantial amounts of sand setting in sewage, and the partially aqueous sink
Sand is probably the 10% of total Water.
B. pretreated percolate of burning away the refuse is passed through regulating reservoir and carries out quenched, PH after regulation is between 5-6, because
It is very high for basicity in sewage, therefore PH, without regulation, it is influent concentration not the having in 2 days or so for ensureing sewage to be adjusted in regulating reservoir
There is too big change.
C. the percolate gravity flow of burning away the refuse after will be quenched enters medium temperature pond, and it is 35-39 to be passed through steam regulation temperature
Between degree Celsius, cause sewage temperature uniform by agitator in medium temperature pond.To provide the life that anaerobic bacteria is most suitable
Deposit temperature；
D. the percolate of burning away the refuse after medium temperature pond is handled is lifted into anaerobic reactor by screw rod elevator pump and carried out
Anaerobic digestion, by various complicated organic matter decomposition and inversions into biogas, the percolate that makes to burn away the refuse obtains preliminary purification；
E. anaerobic reactor water outlet carries out denitrification/digestion process, removes COD, ammonia nitrogen, total nitrogen and total phosphorus；（Denitrification/digestion
It is that submersible agitator is set in prior art, denitrification, not blocking aeration device is set in nitrification, is being exposed by jet pump and blower fan
High velocity impact in gas device drum so that sewage has dissolved oxygen, then in water is injected in）
F. the water outlet after denitrification/digestion process is filtered by outer pipe type ultrafiltration membrane system, and the clear liquid after filtering passes through sodium
Filter membrane system is filtered, and removes most of organic matter and high-valence state salinity in percolate, and the water outlet after the filtering of sodium filter membrane system is clear
Liquid is filtered by seawater desalination reverse osmosis membranous system, and the production water of cleaning is isolated for following by seawater desalination reverse osmosis ionic level
Ring cooling water replenishment is used；
G. it is dense that the concentrate that nanofiltration membrane system and seawater desalination reverse osmosis membranous system are produced first passes through depth softening membranous system removal
Substantial amounts of heavy metal in contracting liquid, subsequently into dish-style filtration membrane systems, the small molecule particle allowed in sewage is acted on through excess pressure
Thing, ion of solubilised state etc. are trapped within concentrated water side, and the fresh water of transmission is collected the filtered fluid as cleaning and supplies circulation cold
But water moisturizing is used, and remaining concentrate carries out dry ash damping or flyash curing or returns spray incinerator or enter incinerator with rubbish.
H. outer pipe type ultrafiltration membrane system：Outer pipe type milipore filter uses 8mm membrane tube internal diameter, and runner is wide, can pass through film surface
High-velocity flow（3~5m/s）The enough shearing forces of shape film formation surface, the filter cake that film is eliminated by just bringing pollutes, so as to effectively solve
Problem is blocked up in the dirt determined in film running, and is replaced traditional second pond effect by outer pipe type milipore filter, realized muddy water
Separation, to ensure the stability of water outlet.
I. nanofiltration system：Nanofiltration system there is selectivity to retain ion, it is allowed to which monovalent salt passes through film, with medium salt
Rate.Due to monovalention permeable membrane, so there is lower operating pressure compared to counter-infiltration.It can remove 150-300 molecular weight
Particulate matter, metal ion, organic matter etc..
J. seawater desalination reverse osmosis system：Seawater desalination reverse osmosis system there is selectivity to retain ion, remove big absolutely
Part salt.Seawater desalination reverse osmosis system can reach more than 95% to COD removal efficiencies, and stable effluent quality is up to standard.It is another because
Percolate nanofiltration water outlet TDS burn away the refuse in 18000mg/l or so, therefore uses the higher seawater desalination reverse osmosis of pressure rating
Film, producing water ratio can be improved by so improving pressure, and reduce the frequency of cleaning.
K. depth softens membranous system：Depth softens membranous system and constituted by concentrating pond, tubular membrane and other corollary equipments.It is dense
Shrink pond can receive the sewage constantly concentrated by tubular membrane, keep sludge concentration to reach optimum state.The structure for softening film is film
It is cast on the inside of porous material pipe.Containing by filter material（Solid）Current pass through after film, then through porous support materials,
Into production water side（Water is cleaned）.The solid particle being rejected by will not rest on the surface of film under the promotion of current, but
Certain souring is played on film surface, it is to avoid pollutant is in film superficial residence.Soften membranous system by depth can be simultaneously
All bivalent cations and the silica such as calcium, magnesium, barium, strontium are removed, is substantially completely eliminated, for follow-up dish-style filtration membrane systems
It can play a protective role.
Dish-style filtration membrane systems：Dish-style filter membrane is the core parts for realizing fresh water and impurity separation, by high polymer material
It is made, and there is aromatic polyamide excellent chemical property to be chosen as the material of disc-type diaphragm.Waste water is pressurized in intake pump
Obtain pre-pressure simultaneously after cartridge filter is filtered i.e. enter high-pressure pump provide pressure, and circulating pump offer larger flow with
Meet the flow rates demand that dish-style filters film surface, liquid in disc-type runner positive/negative " S " to circulation, the small molecule particle in liquid
Thing, ion of solubilised state etc. are trapped within concentrated water side, and the fresh water of transmission is collected the filtered fluid as cleaning.
Dish-style filtering film component construction completely different with traditional rolled film, and component construction and traditional rolled film
It is completely different, stoste runner：Dish tubular membrane component has proprietary runner design form, using open runner.Feed liquid passes through
Entrance enters in pressure vessel, and the passage between flow guiding disc and shell flows to the other end of component, in other end flange, material
Liquid is entered in flow guiding disc by 8 passages, and processed liquid flows quickly through filter membrane with most short distance, and then 180o is reversed
Next flow guiding disc is flowed into another film surface, then from the notch of water conservancy diversion disk center, is justified so as to be formed on film surface by flow guiding disc
Thoughtful circle center, then to circumference, Zai Daoyuan centers it is double " S " shape routes, concentrate finally flows out from feed end flange.Dish-style
The distance between flow guiding disc of filtering film component two is 3mm, and water conservancy diversion panel surface has the salient point that certain way is arranged.This special water
Mechanics design makes treatment fluid flow through under pressure when filter membrane surface meets salient point collision to form turbulent flow, increase transmission rates and from
Cleaning function, blocks and concentration polarization phenomenon so as to efficiently avoid film, successfully extends the service life of diaphragm；Cleaning
When also easily the incrustation on diaphragm is cleaned, it is ensured that dish tubular membrane group be applied to severe flow condition.
In the percolate treatment zero draining technique in power plant of burning away the refuse, settling pit, ZC anaerobic reactors, outer pipe type surpass
Filter membrane system can all produce sludge, and these moisture percentage in sewage sludge scopes are 99% or so, it is necessary to flow into sludge storage pool by collecting, so
It is dehydrated afterwards by sludge dewatering equipment so that moisture percentage in sewage sludge this rear partial sludge below 80% enters stove and burns or transport outward.
Filtrate after sludge dewatering equipment is back to regulating reservoir.
After sewage is by ZC anaerobic reactors, substantial amounts of biogas can be produced, theoretical gas production be 0.35 m3 (biogas)/
kgCOD（Remove）, actual gas production is: 0.3m3(biogas)/kgCOD（Remove）-0.35m3(biogas)/kgCOD（Remove）, this
Part biogas is burned by that can enter incinerator after water sealed tank and vacuum tank, as the energy of incinerator, then works as burning
When refuse-burning plant blowing out is repaired, interim torch burning biogas can be opened, to prevent biogas to ambient contamination.
Foul smell is mainly derived from settling pit, regulating reservoir, sludge storage pool and sludge dewatering system in percolate processing.These are caused
Sordes matter generally can be divided into four classes according to its chemical composition.The first kind is sulfur-containing compound, such as hydrogen sulfide, methyl mercaptan, methyl sulphur
Ether and thiophene etc..Equations of The Second Kind is nitrogen-containing compound, such as nitrogen, trimethylamine, acid amides.3rd class is hydrocarbon compound, such as alkane,
Alkene, alkynes and aromatic hydrocarbon etc..4th class is oxygen-bearing organic matter, such as alcohol, aldehyde, ketone and organic acid.These pollutants have
There is the low feature of volatile, olfact, not only the living environment of severe contamination nearby residents, is detrimental to health, and to oozing
Metal material, equipment and the pipeline of filtrate treating stations have aggressive.Therefore these foul smell need to collect and handled, smelly
The dump pit that gas introduces power plant of burning away the refuse after collecting by air-introduced machine is handled.
Percolate of burning away the refuse first passes through settling pit and removes a part of impurity, then collects to regulating reservoir, is measured through homogeneous
Gravity flow enters medium temperature pond afterwards, and sewage temperature is adjusted in medium temperature pond to provide the existence that anaerobic bacteria is most suitable
Temperature.
Medium temperature pond enters ZC anaerobic reactors by screw rod elevator pump lifting sewage.It is anti-that waste water is first introduced into anaerobism
The bottom of device is answered, under condition of free-dioxygen, current flow up through Sludge Bed, sludge suspension layer to three-phase separate by certain flow velocity
From device and settling zone, the current in anaerobic reactor are in plug-flow form, water inlet and the microorganism in Sludge Bed and sludge suspension layer
Contact is sufficiently mixed, passes through anaerobe（Including facultative microbe）Effect carry out anaerobic digestion, will be various in waste water
Complicated organic matter decomposition and inversion makes waste water obtain preliminary purification, ZC anaerobic reactors are using two layers of three phase separator, production into biogas
Raw methane quantity is big, so as to remove COD efficiency highs.
The water outlet of ZC anaerobic reactors enters denitrification/digestion process system, and denitrification, nitration processes will use sludge cultivation
Elimination to COD, ammonia nitrogen, total nitrogen and total phosphorus.Denitrification/digestion process system water outlet enters outer pipe type ultrafiltration membrane system.
Outer pipe type ultrafiltration membrane system has crown_interception to activated sludge and larger molecular organics matter, makes activated sludge concentration
Greatly improved in reaction tank, hydraulic detention time（HRT）And sludge retention time（SRT）It can be controlled respectively, and it is difficult
The material of degraded constantly reacts, degraded in the reactor.Therefore, outer pipe type ultrafiltration membrane system technique by membrane separation technique significantly
Enhance the function of biological respinse.Sludge makees circulating reflux in outer pipe type ultrafiltration membrane system, is back to denitrification/digestion process system
System, excess sludge drains into sludge system and does dewater treatment.
Outer pipe type ultrafiltration membrane system clear liquid enters nanofiltration system by pump boosting, by nanofiltration to organic matter and high-valence state salt
The high selectivity interception capacity divided, removes the most of organic matter and high-valence state salinity in percolate, and nanofiltration system producing water ratio reaches
More than 85%.Nanofiltration system effluent clear solution enters seawater desalination reverse osmosis membranous system, passes through seawater desalination reverse osmosis ionic level point
The production water of cleaning is separated out for recirculated cooling water moisturizing, seawater desalination reverse osmosis membranous system producing water ratio is up to more than 75%.Nanofiltration system
The concentrate produced with seawater desalination reverse osmosis membranous system first passes through depth softening membranous system and removes a substantial amounts of huge sum of money in concentrate
Category, subsequently into dish-style filtration membrane systems, small molecule particulate matter, ion of solubilised state for allowing in sewage etc. are acted on through excess pressure
Concentrated water side is trapped within, the fresh water of transmission is collected the filtered fluid as cleaning for recirculated cooling water moisturizing, dish-style mistake
Filter membrane system producing water ratio is up to more than 60%.It can so ensure that the producing water ratio of whole percolation liquid treating system reaches more than 85%.It is surplus
Remaining 15% concentrate it is contemplated that dry ash damping, flyash curing returns spray incinerator, enters incinerator etc. with rubbish.By this
The leachate zero-emission in whole power plant of burning away the refuse can be ensured by planting technique.
The art of this patent can improve the producing water ratio of whole system to 85%, it is ensured that remaining concentrate is burnt away the refuse power plant
Can completely it be consumed with itself, so as to ensure leachate zero-emission.
Percolate of burning away the refuse first passes through settling pit and removes a part of impurity, then collects to regulating reservoir, is measured through homogeneous
Gravity flow enters medium temperature pond afterwards, and sewage temperature is adjusted in medium temperature pond to provide the existence that anaerobic bacteria is most suitable
Temperature.
Medium temperature pond enters ZC anaerobic reactors by screw rod elevator pump lifting sewage.It is anti-that waste water is first introduced into anaerobism
The bottom of device is answered, under condition of free-dioxygen, current flow up through Sludge Bed, sludge suspension layer to three-phase separate by certain flow velocity
From device and settling zone, the current in anaerobic reactor are in plug-flow form, water inlet and the microorganism in Sludge Bed and sludge suspension layer
Contact is sufficiently mixed, passes through anaerobe（Including facultative microbe）Effect carry out anaerobic digestion, will be various in waste water
Complicated organic matter decomposition and inversion makes waste water obtain preliminary purification, ZC anaerobic reactors are using two layers of three phase separator, production into biogas
Raw methane quantity is big, so as to remove COD efficiency highs.
The water outlet of ZC anaerobic reactors enters denitrification/digestion process system, and denitrification, nitration processes will use sludge cultivation
Elimination to COD, ammonia nitrogen, total nitrogen and total phosphorus.Denitrification/digestion process system water outlet enters outer pipe type ultrafiltration membrane system.
Outer pipe type ultrafiltration membrane system has crown_interception to activated sludge and larger molecular organics matter, makes activated sludge concentration
Greatly improved in reaction tank, hydraulic detention time（HRT）And sludge retention time（SRT）It can be controlled respectively, and it is difficult
The material of degraded constantly reacts, degraded in the reactor.Therefore, outer pipe type ultrafiltration membrane system technique by membrane separation technique significantly
Enhance the function of biological respinse.Sludge makees circulating reflux in outer pipe type ultrafiltration membrane system, is back to denitrification/digestion process system
System, excess sludge drains into sludge system and does dewater treatment.
Outer pipe type ultrafiltration membrane system clear liquid enters nanofiltration system by pump boosting, by nanofiltration to organic matter and high-valence state salt
The high selectivity interception capacity divided, removes the most of organic matter and high-valence state salinity in percolate, and nanofiltration system producing water ratio reaches
More than 85%.Nanofiltration system effluent clear solution enters seawater desalination reverse osmosis membranous system, passes through seawater desalination reverse osmosis ionic level point
The production water of cleaning is separated out for recirculated cooling water moisturizing, seawater desalination reverse osmosis membranous system producing water ratio is up to more than 75%.Nanofiltration system
The concentrate produced with seawater desalination reverse osmosis membranous system first passes through depth softening membranous system and removes a substantial amounts of huge sum of money in concentrate
Category, subsequently into dish-style filtration membrane systems, small molecule particulate matter, ion of solubilised state for allowing in sewage etc. are acted on through excess pressure
Concentrated water side is trapped within, the fresh water of transmission is collected the filtered fluid as cleaning for recirculated cooling water moisturizing, dish-style mistake
Filter membrane system producing water ratio is up to more than 60%.It can so ensure that the producing water ratio of whole percolation liquid treating system reaches more than 85%.It is surplus
Remaining 15% concentrate it is contemplated that dry ash damping, flyash curing returns spray incinerator, enters incinerator etc. with rubbish.By this
The leachate zero-emission in whole power plant of burning away the refuse can be ensured by planting technique.
The anaerobic reactor includes plastics anaerobic fermentation tank 4, and plastics anaerobic fermentation pot bottom is connected with mud discharging device 1,
Moisture trap is installed from water cloth water installations 2 above mud discharging device, moisture trap passes through backflow from water cloth water installations top
Pipe 3 is connected with plastics anaerobic fermentation tank top moisture trap 10, and two three phase separators are provided with plastics anaerobic fermentation tank
（Two layers of three phase separator 14, one layer of three phase separator 15）, one of them is located in the middle part of tank body, another is on top.At middle part
Three phase separator 15 connected by discharge 11 with moisture trap 10, make the gas that is produced in three phase separator along gas collection
Pipe 11 enters in moisture trap 10.Discharge through plastics anaerobic fermentation tank top and with installed in plastics anaerobic fermentation tank deck
Moisture trap connection on the outside of portion；Return duct is in the middle part of the three phase separator at middle part by connecting with plastics anaerobic fermentation tank top
Connect, circulation line water collector 5 is arranged on return duct, by return duct and the three phase separator of lower section, moisture trap from water
Water-distributing device is connected, and is provided with bearing support 6 above circulation line water collector, and bearing support is used for three phase separation of the support above it
Device, anti-floating system 13 is fixed on above three phase separator, prevents the three phase separator on top from being moved up due to the buoyancy of water,
Overflow mechanism 8 is set above anti-floating system；Sludge is isolated from sewage by triangular-notch weir, sewage rises to overflow mechanism 8
And overflow, left through pipeline from overflow mechanism 8.Plastics anaerobic fermentation tank top left side is provided with platform railing 12, and right side is installed
There is anaerobic fermentation tank water outlet blast pipe 7.Two layers of three phase separator are identical with one layer of three phase separator structure, setting angle rotation 90
Degree, is set by vertical interlaced, whole sewage is fully reacted with three phase separator.Two layers of discharge 9 are by top three-phase
The collecting methane of separator is entered back into moisture trap 10 to tank body top.
Each three phase separator is by overhead guard, clamp 20, triangular-notch weir 18, plenum chamber 17, sealing plate 19,16 groups of gas collection flanged pipe
Into plenum chamber is arranged in the middle of the three phase separator of pie and through the middle separated time of whole three phase separator, makes three phase separator
Triangular-notch weir be divided into tiled configuration layout, i.e., each side arrange one group of triangular-notch weir in plenum chamber.Backflow pipe flange 17 is welded
It is fixed at the top of separator, two layers of three phase separator are identical with one layer of three phase separator structure, and setting angle is rotated by 90 °, it is to avoid
One layer of discharge is clashed with two layers of discharge.Triangular-notch weir 18 on clamp, is consolidated by welded and installed during installation by clamp
It is fixed that triangular-notch weir and level angle are adjusted to 1 degree or so；Gas collection flanged pipe 16 is arranged on three phase separator with backflow pipe flange 17
Top；Sealing plate 19 is arranged on the outside of three phase separator, plays sealed effect；Each three phase separator has three layers of triangle
Weir, first and third layer of triangular-notch weir installation site is identical, the triangular-notch weir installation site of the second layer and first and third layer be staggered, i.e.,
Adjacent two layers triangular-notch weir interlaced arrangement；The blade of triangular-notch weir two symmetrically makes into 80 degree of angles.The each triangular-notch weir of plenum chamber side correspondence
Air inlet is provided with, mud guard 22 is set on air inlet, the length of mud guard 22 is 140mm, and established angle P is 30 degree（P is gear
Mud plate and the angle of plenum chamber side wall）.When installation by clamp fixation by two groups of left and right triangular-notch weir away from plenum chamber one end to
It is lower to tilt, triangular-notch weir layer is adjusted to 1 ° or so with level angle.
Plastics anaerobic fermentation tank bottom even distributing installation has 8 water distribution branch pipes 21, and water distribution branch pipe stretches out plastics anaerobism hair
The end of fermentation tank outer side and the ultimate range of tank skin are 190mm, water distribution branch pipe part inside plastics anaerobic fermentation tank
The ultimate range of end and tank skin is 945mm；The tangent line angle at direction of insertion and cylindrical can bottom per water distribution branch pipe be 60 degree and
It is unified to arrange counterclockwise, sewage is entered rapid in tank bottom formation whirlpool after plastics anaerobic fermentation tank from each water distribution branch pipe
Stream, prevents the salt accumulation of mud from causing dirty stifled phenomenon in the mouth of pipe, an Anti-blocking structure device is formed, while in lifting fluid
Up-flow speed, makes microbiological anaerobic fermentation reaction carry out more abundant.
Plastics anaerobic fermentation tank and triangular-notch weir, discharge, sealing plate, gas collection flanged pipe use white PP plastics systems
Into.
After high concentrated organic wastewater is by pretreatment, waste water is first introduced into the bottom of anaerobic reactor, in free-dioxygen
Under the conditions of, current flow up through Sludge Bed, sludge suspension layer to three phase separator and settling zone, anaerobic reaction by certain flow velocity
Current in device are in plug-flow form, and intaking to be sufficiently mixed with the microorganism in Sludge Bed and sludge suspension layer contacts, and passes through anaerobism
Microorganism（Including facultative microbe）Effect carry out anaerobic digestion, by the various complicated organic matter decomposition and inversions in waste water into dirt
Mud and biogas, are purified waste water, by two layers of three phase separator, can remove substantial amounts of sludge and biogas, so as to go
Except COD efficiency highs.
Although an embodiment of the present invention has been shown and described, it will be understood by those within the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent substitution, without creative work improvements introduced etc., all should be included
Within protection scope of the present invention.
Claims (6)
1. a kind of leachate processing method in power plant of burning away the refuse, it is characterised in that comprise the following steps：
S1）The percolate that will burn away the refuse is passed through settling pit and pre-processed, and removes substantial amounts of sand setting in sewage；
S2）By pretreated percolate of burning away the refuse be passed through regulating reservoir carry out it is quenched, the influent concentration of sewage was protected in 2 days
PH is held between 5-6；
S3）Percolate gravity flow of burning away the refuse after will be quenched enters medium temperature pond, and it is that 35-39 is Celsius to be passed through steam regulation temperature
Between degree, cause sewage temperature uniform by agitator in medium temperature pond, to provide the existence temperature that anaerobic bacteria is most suitable
Degree；
S4）Percolate of burning away the refuse after medium temperature pond is handled is lifted into anaerobic reactor by screw rod elevator pump and carried out
Anaerobic digestion, by various complicated organic matter decomposition and inversions into biogas, the percolate that makes to burn away the refuse obtains preliminary purification；
S5）Anaerobic reactor water outlet carries out denitrification/digestion process；
S6）Filtration treatment is carried out to the water outlet after denitrification/digestion process.
2. the leachate processing method in power plant of burning away the refuse according to claim 1, it is characterised in that：In step S6）In,
Filtered, the clear liquid after filtering is filtered by sodium filter membrane system, removed in percolate by outer pipe type ultrafiltration membrane system first
Most of organic matter and high-valence state salinity, sodium filter membrane system filtering after effluent clear solution pass through seawater desalination reverse osmosis membranous system
Filtering, the production water of cleaning is isolated for recirculated cooling water moisturizing by seawater desalination reverse osmosis ionic level；Nanofiltration membrane system
The concentrate produced with seawater desalination reverse osmosis membranous system first passes through depth softening membranous system and removes a substantial amounts of huge sum of money in concentrate
Category, subsequently into dish-style filtration membrane systems, small molecule particulate matter, ion of solubilised state for allowing in sewage etc. are acted on through excess pressure
Concentrated water side is trapped within, the fresh water of transmission is collected the filtered fluid as cleaning for recirculated cooling water moisturizing, remaining
Concentrate carries out dry ash damping or flyash curing or returns spray incinerator or enter incinerator with rubbish.
3. the leachate processing method in power plant of burning away the refuse according to claim 2, it is characterised in that：In settling pit, detest
Sludge produced by oxygen reactor, medium temperature pond, outer pipe type ultrafiltration membrane system is collected inflow sludge storage pool, then passes through sludge
Dewaterer is dehydrated so that moisture percentage in sewage sludge rear stove that enters below 80% is burned or transported outward；After sludge dewatering equipment
Filtrate is back to regulating reservoir.
4. the leachate processing method in power plant of being burnt away the refuse according to claims 1 to 3 is any, it is characterised in that：It is described
Anaerobic reactor includes having anaerobe to occur biochemical reaction, the anaerobic fermentation tank with waste water in anaerobic fermentation tank, tank body
Tank deck on moisture trap is set, tank base be provided with above mud discharging device, mud discharging device be provided with moisture trap from
Water cloth water installations, the moisture trap is connected from water cloth water installations by return duct with moisture trap, anaerobic fermentation tank
Parallel up and down in tank body to be provided with two three phase separators, the three phase separator is pie, two three phase separator structure phases
Same and installation direction differs 90 degree, and two three phase separators are connected by discharge with moisture trap, are made in three phase separator
The gas of generation enters in moisture trap along discharge.
5. the leachate processing method in power plant of burning away the refuse according to claim 4, it is characterised in that：The tank body top
It is provided for placing the bearing support of three phase separator, is set above three phase separator above anti-floating system, the anti-floating system
Overflow mechanism is set, and the overflow mechanism connects drainage pipeline, and the three phase separator includes clamp, triangular-notch weir, plenum chamber, if
Three layers of the triangular-notch weir of dry strip point is in plenum chamber both sides arrangement, adjacent two layers triangular-notch weir interlaced arrangement, and the clamp is used for solid
Fixed each triangular-notch weir.
6. the leachate processing method in power plant of burning away the refuse according to claim 5, it is characterised in that：The plenum chamber side
The each triangular-notch weir of correspondence is provided with air inlet, and mud guard is set on air inlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540628.4A CN107200440A (en) | 2017-07-05 | 2017-07-05 | A kind of leachate processing method in power plant of burning away the refuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540628.4A CN107200440A (en) | 2017-07-05 | 2017-07-05 | A kind of leachate processing method in power plant of burning away the refuse |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710540628.4A Withdrawn CN107200440A (en) | 2017-07-05 | 2017-07-05 | A kind of leachate processing method in power plant of burning away the refuse |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107857437A (en) * | 2017-11-30 | 2018-03-30 | 重庆三峰环境产业集团有限公司 | A kind of method and system for handling mixing percolate |
| CN108483799A (en) * | 2018-03-22 | 2018-09-04 | 中山市天乙能源有限公司 | A kind of garbage incinerating power plant percolate treating process |
| CN109205900A (en) * | 2018-08-27 | 2019-01-15 | 江苏天楹环保能源成套设备有限公司 | A kind of refuse-burning plant percolation liquid treating system |
| CN109336254A (en) * | 2018-12-06 | 2019-02-15 | 南通润泽环境工程技术有限公司 | A kind of novel anaerobic reactor for garbage leachate wastewater processing |
| CN109704523A (en) * | 2019-02-25 | 2019-05-03 | 中机眉山再生能源有限公司 | Energy conservation and environmental protection sewage water treatment method in a kind of electricity generation system |
| CN109942151A (en) * | 2019-03-29 | 2019-06-28 | 崔潇月 | A method of effectively removing ammonia in landfill leachate |
| CN110294573A (en) * | 2019-07-10 | 2019-10-01 | 哈尔滨锅炉厂有限责任公司 | It is a kind of to utilize UASB anaerobic reactor, MBR, ultrafiltration and reverse osmosis treatment landfill leachate system |
| CN110395847A (en) * | 2019-08-02 | 2019-11-01 | 宇创环保产业有限公司 | A kind of domestic garbage burning electricity generation clinker resource utilization Environmental Protection System |
| CN110642479A (en) * | 2019-10-31 | 2020-01-03 | 重庆三峰科技有限公司 | Membrane concentrated solution reduction treatment system and treatment process thereof |
| CN112723652A (en) * | 2020-12-03 | 2021-04-30 | 上海东石塘再生能源有限公司 | High-salinity sewage treatment device and method |
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2017
- 2017-07-05 CN CN201710540628.4A patent/CN107200440A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107857437A (en) * | 2017-11-30 | 2018-03-30 | 重庆三峰环境产业集团有限公司 | A kind of method and system for handling mixing percolate |
| CN108483799A (en) * | 2018-03-22 | 2018-09-04 | 中山市天乙能源有限公司 | A kind of garbage incinerating power plant percolate treating process |
| CN108483799B (en) * | 2018-03-22 | 2021-02-26 | 中山市天乙能源有限公司 | Leachate treatment process for waste incineration power plant |
| CN109205900A (en) * | 2018-08-27 | 2019-01-15 | 江苏天楹环保能源成套设备有限公司 | A kind of refuse-burning plant percolation liquid treating system |
| CN109336254A (en) * | 2018-12-06 | 2019-02-15 | 南通润泽环境工程技术有限公司 | A kind of novel anaerobic reactor for garbage leachate wastewater processing |
| CN109336254B (en) * | 2018-12-06 | 2024-03-01 | 南通润泽环境工程技术有限公司 | Novel anaerobic reactor for garbage leachate wastewater treatment |
| CN109704523A (en) * | 2019-02-25 | 2019-05-03 | 中机眉山再生能源有限公司 | Energy conservation and environmental protection sewage water treatment method in a kind of electricity generation system |
| CN109942151A (en) * | 2019-03-29 | 2019-06-28 | 崔潇月 | A method of effectively removing ammonia in landfill leachate |
| CN110294573A (en) * | 2019-07-10 | 2019-10-01 | 哈尔滨锅炉厂有限责任公司 | It is a kind of to utilize UASB anaerobic reactor, MBR, ultrafiltration and reverse osmosis treatment landfill leachate system |
| CN110395847A (en) * | 2019-08-02 | 2019-11-01 | 宇创环保产业有限公司 | A kind of domestic garbage burning electricity generation clinker resource utilization Environmental Protection System |
| CN110642479A (en) * | 2019-10-31 | 2020-01-03 | 重庆三峰科技有限公司 | Membrane concentrated solution reduction treatment system and treatment process thereof |
| CN112723652A (en) * | 2020-12-03 | 2021-04-30 | 上海东石塘再生能源有限公司 | High-salinity sewage treatment device and method |
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Application publication date: 20170926 |