CN107902827A - A kind of townm refuse percolate high-efficient treatment method - Google Patents

A kind of townm refuse percolate high-efficient treatment method Download PDF

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Publication number
CN107902827A
CN107902827A CN201711121065.1A CN201711121065A CN107902827A CN 107902827 A CN107902827 A CN 107902827A CN 201711121065 A CN201711121065 A CN 201711121065A CN 107902827 A CN107902827 A CN 107902827A
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steam
tank
mvr
landfill leachate
enters
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姜洪达
张学巍
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JILIN PROVINCE XINJINER TECHNOLOGY Co Ltd
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JILIN PROVINCE XINJINER TECHNOLOGY Co Ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/58—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/30—Alkali metal compounds
    • B01D2251/304—Alkali metal compounds of sodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/50—Inorganic acids
    • B01D2251/506—Sulfuric acid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • 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
    • 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
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06—Contaminated groundwater or leachate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/02—Softening water by precipitation of the hardness
    • C02F5/06—Softening water by precipitation of the hardness using calcium compounds

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  • Engineering & Computer Science (AREA)
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  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

The invention discloses a kind of townm refuse percolate high-efficient treatment method.Comprise the following steps：S1, landfill leachate pretreatment：Landfill leachate sequentially enters mixer, coagulation reaction tank, sedimentation basin and clean solution tank；Addition milk of lime softens landfill leachate in the mixer and pH value is adjusted, and pH value is adapted to the needs of coagulant；Coagulant is added in the coagulation reaction tank and carries out coagulation, the supernatant that overflow goes out after precipitation subsequently into the sedimentation basin enters the clean solution tank；The solidliquid mixture of sedimentation basin bottom is periodically transported to landfill yard and is filled through eddy flow concentration heel row to sludge concentration tank, the solid of sludge concentration tank；Supernatant after S2, precipitation is evaporated through clean solution tank into MVR vaporising devices；The distilled water of S3, MVR vaporising device output enters activated carbon tower device and carries out adsorption treatment, is discharged after water quality reaching standard.This method technique is simple, the degree of automation is high, high treating effect and operating cost are low, easy to management service.

Description

A kind of townm refuse percolate high-efficient treatment method
Technical field
The present invention relates to environmental project technical field of sewage, and in particular to a kind of townm refuse percolate efficient process Method.
Background technology
Percolate is product of the liquid in landfill yard gravity flowing, is mainly derived from precipitation and rubbish in itself interior aqueous. Due to liquid may influence in many of flow process factor the property of percolate, including physical factor, chemical factor with And biological factor etc., so the property of percolate changes in a sizable scope.In general, its pH value 4~9 it Between, COD is in the range of 2000~62000mg/L, BOD5 weights from 60~45000mg/L, heavy metal concentration and municipal wastewater The concentration of metal is basically identical.Percolated liquid in city refuse landfill is a kind of high concentrated organic wastewater of complicated component, if being not added with Handle and be directly discharged into environment, serious environmental pollution can be caused.For the purpose of environmental protection, percolate is carried out processing be must Indispensable.
In recent years, many new technologies are applied to the processing of townm refuse percolate, and achieve rapid development.Its Middle most successful and it is most widely used be exactly MBR techniques, DTRO techniques, the utilization in landfill leachate treatment is people first Received.But there is also shortcoming for MBR techniques, DTRO techniques：1st, biochemical system debug time is grown, and microculture is difficult； 2nd, the operation and maintenance of membranous system are complicated；3rd, operating cost is high, and concentrated water processing is difficult.The shortcomings that for the above, be badly in need of developing A kind of new technique.
The content of the invention
To solve at least one above-mentioned technical problem, the present invention provides a kind of townm refuse percolate efficient process side Method, this method technique is simple, the degree of automation is high, high treating effect and operating cost are low, easy to management service, is adapted to cities and towns rubbish The efficient process of rubbish percolate.
To achieve the above object, the present invention uses following technical scheme：
A kind of townm refuse percolate high-efficient treatment method, comprises the following steps：
S1, landfill leachate pretreatment：
Landfill leachate sequentially enters mixer, coagulation reaction tank, sedimentation basin and clean solution tank；
Addition milk of lime softens landfill leachate in the mixer and pH value is adjusted, and pH value is adapted to coagulation The needs of agent；Coagulant is added in the coagulation reaction tank and carries out coagulation, is overflow subsequently into the sedimentation basin after precipitation The supernatant of outflow enters the clean solution tank；The solidliquid mixture of sedimentation basin bottom concentrates heel row to sludge concentration tank through eddy flow, The solid of sludge concentration tank is periodically transported to landfill yard and is filled；
Supernatant after S2, precipitation is evaporated through clean solution tank into MVR vaporising devices；
The distilled water of S3, MVR vaporising device output enters activated carbon tower device and carries out adsorption treatment, water quality reaching standard heel row Put.
Preferably, the dope that the MVR vaporising devices produce merges with the solidliquid mixture in the sludge concentration tank Landfill yard is filled.
Preferably, the detailed process that MVR vaporising devices are evaporated in S2 is：
Supernatant after precipitation enters MVR vaporising devices through clean solution tank, initially enters rapid filter, and filtrate is handed over through overheat Parallel operation and the distilled water and concentrated water of discharge system carry out heat exchange, then by exhaust heat exchanger, finally enter vaporizing body；Into The liquid that comes for entering vaporizing body is mixed with original circulation fluid in main body, while a part of circulation fluid is discharged by concentrated water discharge pipeline System；The circulation fluid of another part is redistributed by liquid distributor and is evaporated in each heat exchange pipe surface formation film；
The hot well that unevaporated liquid converges at vaporizing body bottom is circulated next time again with coming after liquid mixes；Steamed The moisture of hair becomes steam, and steam detaches vaporizing body after demister carries out gas-liquid separation by compressor, by compressor After compression heating, pickling and alkali cleaning gas unit into MVR vaporising devices；
The ammonia nitrogen and sulfuric acid reaction being volatized into pickling unit, landfill leachate in steam, generate ammonium sulfate；Pickling Steam after gas goes successively to alkali cleaning gas unit, organic matter and sodium hydroxide reaction in steam；
Steam after soda acid gas washing is transported in vaporizing body heat-exchange tube again, and high-temperature steam is low with outside pipe in pipe Warm material carries out heat exchange, and low-temperature material is heated and evaporates, and the moisture being evaporated becomes what steam supplement was taken away by compressor Steam；The steam of high temperature, which releases latent heat after heat exchange and is condensed, in pipe becomes distilled water；
Distilled water be collected into distillation water pot after be transported to heat exchanger and come liquid carry out heat exchange, after leave MVR steaming Transmitting apparatus send to activated carbon tower device and further handles.
Preferably, the compressor centrifuges recompressor for single-action.
Beneficial effects of the present invention
Townm refuse percolate high-efficient treatment method provided by the invention, technique is simple, the degree of automation is high, treatment effect Good and operating cost is low, easy to management service, is adapted to the efficient process of townm refuse percolate.With some following beneficial effect Fruit：
1) low energy consumption, low operating cost；
2) floor space is small；Public work is supporting few, and total investment of engineering is few；
3) operate steadily, the degree of automation is high；
4) without primary steam；
5) technique is simple, highly practical, and sub-load service performance is excellent；
6) can be evaporated without below 40 DEG C needs freezing equipment, particularly suitable for heat sensitive material.
7) MVR evaporators clean energy resource, without any pollution；
8) MVR evaporators are good by secondary steam recycling technology, steam condensate (SC) effluent quality.
Brief description of the drawings
Fig. 1 is a kind of townm refuse percolate high-efficient treatment method flow diagram of the present invention.
Embodiment
The present invention is specifically described below by embodiment, it is necessary to which indicated herein is that the present embodiment is served only for pair The present invention is further described, it is impossible to is interpreted as limiting the scope of the invention, the person skilled in the art in the field can Some nonessential modifications and adaptations are made with the content of the invention more than.In the case where there is no conflict, the reality in the present invention Applying the feature in example and embodiment can be mutually combined.
As shown in Figure 1, a kind of townm refuse percolate high-efficient treatment method, comprises the following steps：
S1, landfill leachate pretreatment：Landfill leachate sequentially enters mixer, coagulation reaction tank, sedimentation basin and clear liquid Pond；
Addition milk of lime softens landfill leachate in the mixer and pH value is adjusted, and pH value is adapted to coagulation The needs of agent；Coagulant is added in the coagulation reaction tank and carries out coagulation, is overflow subsequently into the sedimentation basin after precipitation The supernatant of outflow enters the clean solution tank；The solidliquid mixture of sedimentation basin bottom concentrates heel row to sludge concentration tank through eddy flow, The solid of sludge concentration tank is periodically transported to landfill yard and is filled；
The water quality and forming process of landfill leachate are affected by many factors, its component is also complex.Oozed in rubbish In filtrate, usually all contain substantial amounts of particulate, suspended matter and colloid.If substantial amounts of particulate, suspended matter and colloid are directly entered The MVR vaporising devices of back segment, certain MVR vaporising devices can be handled completely, but will certainly so influence MVR evaporations The performance of device efficiency, prevents it from working in the state of being in high-effect.
Using simple filter to the landfill leachate containing materials such as a large amount of particulates, suspended matter, colloid, calcium, magnesium into Row processing, one side plugged filter are serious, it is impossible to work normally；On the other hand being not thorough due to filtering, accelerates back segment to steam The fouling of hair system, causes equipment cisco unity malfunction.In consideration of it, the landfill leachate for entering system is necessary to carry out corresponding Pretreatment.
This technique as needed pre-processes the landfill leachate for entering system using coagulant sedimentation, it is therefore an objective to the greatest extent A large amount of particulates, suspended matter, calcium and magnesium and colloid contained in landfill leachate may be removed, such material is reduced and enters in system Content, it is ensured that system works in the state of being maintained at high-effect.
Milk of lime is added in water and removes calcium and magnesium in water inlet, the purpose is to remove in water inlet a large amount of calcium for containing from Son, magnesium ion, eliminate the temporary hardness in water inlet, and reduction dirt, which is got lodged in MVR vapo(u)rization systems, to be occurred.It can be gone by chemical tendering Except the silica of more than 90% calcium ions and magnesium ions, 50-60% or so and the fluorine ion of the overwhelming majority, while remove 20% or so COD organic matters.The reaction equation of lime softening method is as follows：
Ca(HCO3)2+Ca(OH)2→2CaCO3+2H2O
Mg(HCO3)2+2Ca(OH)2→Mg(OH)2+2CaCO3+2H2O
Supernatant after S2, precipitation is evaporated through clean solution tank into MVR vaporising devices；
In this preferred embodiment, the detailed process that MVR vaporising devices are evaporated is：
Supernatant after precipitation enters MVR vaporising devices through clean solution tank, initially enters rapid filter, and filtrate is handed over through overheat Parallel operation and the distilled water and concentrated water of discharge system carry out heat exchange, then by exhaust heat exchanger, finally enter vaporizing body；Into The liquid that comes for entering vaporizing body is mixed with original circulation fluid in main body, while a part of circulation fluid is discharged by concentrated water discharge pipeline System；The circulation fluid of another part is redistributed by liquid distributor and is evaporated in each heat exchange pipe surface formation film；
The hot well that unevaporated liquid converges at vaporizing body bottom is circulated next time again with coming after liquid mixes；Steamed The moisture of hair becomes steam, and steam detaches vaporizing body after demister carries out gas-liquid separation by compressor, by compressor After compression heating, pickling and alkali cleaning gas unit into MVR vaporising devices；
The ammonia nitrogen and sulfuric acid reaction being volatized into pickling unit, landfill leachate in steam, generate ammonium sulfate；Pickling Steam after gas goes successively to alkali cleaning gas unit, organic matter and sodium hydroxide reaction in steam；
Steam after soda acid gas washing is transported in vaporizing body heat-exchange tube again, and high-temperature steam is low with outside pipe in pipe Warm material carries out heat exchange, and low-temperature material is heated and evaporates, and the moisture being evaporated becomes what steam supplement was taken away by compressor Steam；The steam of high temperature, which releases latent heat after heat exchange and is condensed, in pipe becomes distilled water；
Distilled water be collected into distillation water pot after be transported to heat exchanger and come liquid carry out heat exchange, after leave MVR steaming Transmitting apparatus send to activated carbon tower device and further handles.
The dope that the MVR vaporising devices produce merge with the solidliquid mixture in the sludge concentration tank landfill yard into Row landfill.
Low energy consumption MVR (Mechanical Vapor Recompression function of mechanical steam recompression) vaporising device is whole The core of garbage percolation liquid treating system, most pollutants are removed by the device to complete.MVR evaporation dresses It is that the different characteristic of boiling point is designed at the same pressure according to various materials to put, and reaches material by way of heating Evaporate and separate from solution to the boiling point of certain solvent, mainly set herein according to the characteristic of water in landfill leachate Solution is heated to fluidized state and water is isolated from solution by meter, the characteristic for corresponding to different boiling at various pressures according to water Come.
The evaporator industrially applied has as many as tens of kinds, and low energy consumption MVR vaporising devices are one kind in evaporator, but It is different from traditional evaporator, and low energy consumption MVR vaporising devices are a kind of efficient, energy saving evaporation equipments, it is in evaporator It is most energy-saving and environment-friendly evaporation equipment.Is made of horizontal tube bundle in the device evaporation body, steam heats in pipe, feed liquid through pump by The distributor specially designed is evaporated from top spray when pipe outer wall forms liquid falling film.Can be complete using this kind of evaporator It totally disappeared except being disappeared as the temperature difference caused by fluid pressure head, so as to effectively improve the biography of heat-exchange tube in heating chamber Hot property.
Low energy consumption MVR (Mechanical Vapor Recompression function of mechanical steam recompression) vaporising device is different from Traditional relies primarily on single-effect evaporating equipment or multi-effect evaporating device of the raw steam as heat source.Raw steam utilizes one as heat source After secondary, the most low-grade energy that contains in the indirect steam of generation, collects and seldom providing by compressor On the basis of the cost of energy, by this part, indirect steam rises to high-grade energy, sends evaporator back to and is used as heat source, and right In traditional multi-effect evaporation system, although being used by the steam that upper 1st effective evaporator produces in next effect, no matter have How many effects, indirect steam that last effect produces finally be condensed by the condenser and finally by cooling tower by these energy from system Take away, so substantial amounts of heat of system loss.As can be seen here MVR in energy conservation compared with where the advantage of other evaporation techniques, And so far in known evaporation technique energy consumption is minimum.
To make the manufacture of vaporising device as simple and easy to operate as possible, recompressor is centrifuged commonly using single-action.These Machine is 1：1.2 to 1：Its volume flow is higher in 2 compression ratio ranges.For low evaporation rate, it is also possible to piston type compressed Machine, slide vane compressor or helical-lobe compressor.
MVR evaporation equipments are compact, and floor space is small, required space is small, the degree of automation is high, can also save steam generator system and Cooling system.For needing to extend evaporation equipment and steam supply, water supply capacity deficiency, the existing factory that the space is insufficient is particularly low Temperature evaporation needs the occasion of cooling water, can receive and not only reduce investment outlay but also obtain preferable energy-saving effect.MVR low energy consumption evaporation The yield of distilled water is more than 90%, and GB16889-2008 standard of drainage is can reach after activated carbon tower.
The distilled water of S3, MVR vaporising device output enters activated carbon tower device and carries out adsorption treatment, water quality reaching standard heel row Put.
Activated carbon is a kind of porous carbon containing matter, and there is highly developed hole to construct for it, the porous knot of activated carbon Structure is provided for substantial amounts of surface area, can be come into full contact with impurity, makes it be very easy to achieve the purpose that to absorb to collect impurity. Just as magnetic force, all there is attractive interaction between all molecules.Harmful impurity is attracted in aperture so as to reach Purpose.
In MVR evaporation processes, some volatile volatile fatty acid (volatile fatty acids, VFAs) classes Material and ammonia nitrogen are easier to volatilize, this is determined by the characteristic of percolate.Steam passes through gas washing unit in MVR vaporising devices Afterwards, minimal amount of organic matter is still contained in the distilled water of generation.If the concentration of stoste is not high, distilled water CODcr can directly reach Mark.If the concentration of stoste is higher, the CODcr concentration of distilled water is sometimes up to 200-400mg/L or so.But at this moment distilled water CODcr concentration is relatively low, and suspended matter is substantially zeroed, without other poisonous and hazardous materials, the filter of suitable activated carbon Handled.This device is set to can ensure that water quality reaching standard discharges.
Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained without making creative work Example is applied, belongs to the scope of the present invention.

Claims (4)

1. a kind of townm refuse percolate high-efficient treatment method, it is characterised in that comprise the following steps：
S1, landfill leachate pretreatment：
Landfill leachate sequentially enters mixer, coagulation reaction tank, sedimentation basin and clean solution tank；
Addition milk of lime softens landfill leachate in the mixer and pH value is adjusted, and pH value is adapted to coagulant Need；Coagulant is added in the coagulation reaction tank and carries out coagulation, overflow goes out after precipitation subsequently into the sedimentation basin Supernatant enter the clean solution tank；The solidliquid mixture of sedimentation basin bottom concentrates heel row to sludge concentration tank, sludge through eddy flow The solid of concentration basin is periodically transported to landfill yard and is filled；
Supernatant after S2, precipitation is evaporated through clean solution tank into MVR vaporising devices；
The distilled water of S3, MVR vaporising device output enters activated carbon tower device and carries out adsorption treatment, is discharged after water quality reaching standard.
2. townm refuse percolate high-efficient treatment method according to claim 1, it is characterised in that the MVR evaporations dress The dope for putting generation merges with the solidliquid mixture in the sludge concentration tank and is filled in landfill yard.
3. townm refuse percolate high-efficient treatment method according to claim 1, it is characterised in that MVR evaporations dress in S2 Putting the detailed process being evaporated is：
Supernatant after precipitation enters MVR vaporising devices through clean solution tank, initially enters rapid filter, filtrate is through over-heat-exchanger Heat exchange is carried out with the distilled water and concentrated water of discharge system, then by exhaust heat exchanger, finally enters vaporizing body；Into steaming The liquid that comes of hair main body is mixed with original circulation fluid in main body, while a part of circulation fluid is by concentrated water discharge pipeline discharge system System；The circulation fluid of another part is redistributed by liquid distributor and is evaporated in each heat exchange pipe surface formation film；
The hot well that unevaporated liquid converges at vaporizing body bottom is circulated next time again with coming after liquid mixes；It is evaporated Moisture becomes steam, and steam detaches vaporizing body after demister carries out gas-liquid separation by compressor, by compressor compresses After heating, pickling and alkali cleaning gas unit into MVR vaporising devices；
The ammonia nitrogen and sulfuric acid reaction being volatized into pickling unit, landfill leachate in steam, generate ammonium sulfate；After pickling gas Steam go successively to alkali cleaning gas unit, organic matter and sodium hydroxide reaction in steam；
Steam after soda acid gas washing is transported in vaporizing body heat-exchange tube again, high-temperature steam and the low temperature thing outside pipe in pipe Material carries out heat exchange, and low-temperature material is heated and evaporates, and the moisture being evaporated becomes the steam that steam supplement is taken away by compressor； The steam of high temperature, which releases latent heat after heat exchange and is condensed, in pipe becomes distilled water；
Distilled water be collected into distillation water pot after be transported to heat exchanger and come liquid carry out heat exchange, after leave MVR evaporation dress Put to send to activated carbon tower device and further handle.
4. townm refuse percolate high-efficient treatment method according to claim 3, it is characterised in that the compressor is single Effect centrifugation recompressor.
CN201711121065.1A 2017-11-14 2017-11-14 A kind of townm refuse percolate high-efficient treatment method Pending CN107902827A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109319997A (en) * 2018-10-29 2019-02-12 深圳市捷晶能源科技有限公司 A kind of method for treating garbage percolation liquid and system
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WO2019200590A1 (en) * 2018-04-19 2019-10-24 Kemira Oyj Composition and method for pretreating landfill leachate on mechanical vapor recompression evaporation process
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CN110078283A (en) * 2019-04-24 2019-08-02 中国神华能源股份有限公司 Saliferous equipment for treating water from mine
CN110759571A (en) * 2019-10-31 2020-02-07 广东闻扬环境科技有限公司 Fly ash leachate treatment system and treatment method

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