CN103910399A - Garbage leachate treatment system - Google Patents

Garbage leachate treatment system Download PDF

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Publication number
CN103910399A
CN103910399A CN201410164672.6A CN201410164672A CN103910399A CN 103910399 A CN103910399 A CN 103910399A CN 201410164672 A CN201410164672 A CN 201410164672A CN 103910399 A CN103910399 A CN 103910399A
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China
Prior art keywords
communicated
outlet
concentrated solution
well heater
water
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CN201410164672.6A
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Chinese (zh)
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CN103910399B (en
Inventor
曾苏
葛仕福
张忠梅
阮晓卿
谈艳秋
徐少娟
吕科伟
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NANJING ZIXIN HUICUI ENVIRONMENT TECHNOLOGY Co Ltd
ZHEJIANG FUCHUNJIANG ENVIRONMENTAL PROTECTION THERMOELECTRICITY CO Ltd
Southeast University
Original Assignee
NANJING ZIXIN HUICUI ENVIRONMENT TECHNOLOGY Co Ltd
ZHEJIANG FUCHUNJIANG ENVIRONMENTAL PROTECTION THERMOELECTRICITY CO Ltd
Southeast University
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Priority to CN201410164672.6A priority Critical patent/CN103910399B/en
Publication of CN103910399A publication Critical patent/CN103910399A/en
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Abstract

The invention discloses a garbage leachate treatment system, which comprises an evaporator, a heater and a steam compressor, wherein the evaporator is provided with a steam outlet, a garbage leachate feeding pipe, a concentrated solution reflow pipe and a concentrated solution outlet; a concentrated solution inlet, a heater steam inlet, a concentrated solution outlet, a condensed water outlet and a non-condensed steam outlet are formed in the heater; the steam outlet of the evaporator is connected to the steam compressor; an outlet of the steam compressor is communicated with the heater steam inlet of the heater; the concentrated solution outlet of the evaporator is partitioned into two paths, wherein one path is communicated to a concentrated solution discharging pump, and the other path is communicated to a forced circulation pump; the forced circulation pump is communicated to the concentrated solution inlet of the heater; the concentrated solution outlet of the heater is communicated to the concentrated solution reflow pipe of the evaporator. Secondary steam generated by an evaporation system is mainly taken as a heat source of the evaporation system. Secondary steam is recycled as a heat source.

Description

Rubbish leachate treatment system
Technical field
The present invention relates to a kind of rubbish leachate treatment system, particularly a kind of cost is low, energy consumption is low, operational management for the treatment of the vapo(u)rization system of garbage burning factory rubbish leachate, belongs to technical field of waste water processing easily.
Background technology
Along with the quickening of Chinese Urbanization pace of construction, the growth of population and the raising of living standards of the people, domestic waste is also growing.At present, the method that refuse treatment is disposed mainly comprises garbage loading embeading, composting process, burning method etc., and burning method is with respect to traditional garbage loading embeading, composting process, because having the advantage of the aspects such as minimizing, innoxious, resource utilization, has obtained good development.
In Refuse Incineration Process, in order to ensure firing efficiency, fresh rubbish need be piled to ferment in refuse pit and burn again after 3~7 days, and this process produces rubbish leachate.Leaching vat is a kind of unmanageable poisonous and hazardous high concentrated organic wastewater, is tawny or beige, and the gas volatilizing, with fetor, has harm to human body, can make people produce the symptoms such as nauseating, hematuria, dizziness.
Method of evaporation is a kind of method for the treatment of refuse leaching vat, and evaporation is a physical process that volatile constituent is separated with nonvolatile element, is made up of two portions: heated solution makes water ebullition, gasification and constantly removes the water vapour of gasification.When rubbish leachate evaporation process, water boils from leaching vat, and pollutent remains in concentrated solution.All heavy metals and inorganics and most of organic volatility, all than a little less than water, therefore can be retained in concentrated solution, only have part volatile hydrocarbon, and the pollutents such as VFA and ammonia can enter steam, are finally present in phlegma.But the evaporation unit of existing treating refuse leaching vat be multiple-effect evaporator and transverse tube type falling-film evaporator, shortcoming is evaporation unit complexity, energy consumption is high, running cost is high, easy fouling, clean complicated.
Summary of the invention
Goal of the invention: the object of the invention is to relate to that a kind of cost is low, energy consumption is low, operational management is easily for the treatment of the vapo(u)rization system of garbage burning factory rubbish leachate.
Technical scheme: rubbish leachate treatment system of the present invention, comprises vaporizer, well heater and vapour compressor; Vaporizer is provided with vapour outlet, leachate feed-pipe, concentrated solution return line and concentrated solution outlet; Well heater is provided with concentrated solution entrance, well heater steam inlet, concentrated solution outlet, condensation-water drain, uncondensated steam outlet; The vapour outlet of described vaporizer is connected to vapour compressor, and vapour compressor outlet is communicated with the well heater steam inlet of well heater; The concentrated solution outlet of described vaporizer is divided into two-way, and a road is communicated to concentrated solution discharging pump, and another road is communicated to forced circulation pump, and forced circulation pump is communicated to the concentrated solution entrance of well heater, and the concentrated solution outlet of well heater is communicated to the concentrated solution return line of vaporizer.
Further, also comprise water of condensation interchanger and gas heat exchanger; The condensation-water drain of well heater is communicated to water of condensation interchanger; The uncondensated steam outlet of well heater is communicated to gas heat exchanger, and leachate is communicated to the leachate feed-pipe of vaporizer after water of condensation interchanger and gas heat exchanger heating again.
Further, leachate is first communicated to water of condensation interchanger, then is communicated to gas heat exchanger, and then is communicated to the leachate feed-pipe of vaporizer.
Further, leachate is divided into two-way, is communicated to respectively gas heat exchanger and water of condensation interchanger and converges into a road again and be communicated to the leachate feed-pipe of vaporizer.
Further, also comprise solidifying water transfer tank, solidifying water pot and gas-liquid separator; The condensation-water drain of described well heater is communicated with water of condensation interchanger by solidifying water transfer tank; On water of condensation interchanger, be provided with the condensation-water drain that is communicated with solidifying water pot; On gas heat exchanger, be provided with the pneumatic outlet that is communicated with gas-liquid separator; Described gas-liquid separator is provided with pneumatic outlet and liquid exit, and wherein pneumatic outlet expellant gas is disposed to atmosphere, and liquid exit is communicated to solidifying water pot; Described solidifying water transfer tank arranges first outlet pipe, and described solidifying water pot is provided with second exhaust pipe, and first outlet pipe and second exhaust pipe are all communicated to gas heat exchanger.
Further, described vaporizer is vertical tank body, and described well heater is horizontal tank body, is provided with multiple heating tube bundles in well heater, space in well heater is divided into heating tube bundle inside and heating tube bundle outside, and concentrated solution carries out heat exchange with the steam of heating tube bundle outside in heating tube bundle.
Compared with prior art, its beneficial effect is in the present invention: 1, vapo(u)rization system thermal source of the present invention mainly adopts the secondary steam self producing.It utilizes secondary steam again as thermal source.After secondary steam is collected together, through the vapour compressor temperature raising of boosting, be delivered to afterwards the heating source as self in the well heater of vapo(u)rization system, the enthalpy heat of self passed to the leaching vat of opposite side in condensation.Leaching vat after heating produces secondary steam in heated evaporation in vaporizer, thus constantly circulation.2, without special large-scale refrigerating unit is set.After secondary steam condensation as thermal source after the temperature raising of boosting, can by interchanger with carry out liquid and carry out heat exchange, after the heat of self overwhelming majority is passed to liquid, just leave system, both reclaimed energy, also played the effect cooling.3, energy consumption is minimum.It utilizes secondary steam again as thermal source, be equivalent to a multiple-effect evaporator, but it does not need steam supply, the electrical energy fed vapour compressor that its needs are a small amount of, by vapour compressor by secondary steam boost temperature raising to than secondary steam slightly high can position.4, the vapo(u)rization system described in native system is to evaporate under negative pressure low temperature, has saved steam consumption, and negative pressure low-temperature evaporation is conducive to reduce organic concentration in steam, has improved organic removal effect.5, invest lowly, simple in structure, operation operation easily.Structurally it is equivalent to a single-effect evaporator to vaporizer of the present invention, is equivalent to a multiple-effect evaporator in effect, and it does not have the Controlling System of the desired complexity of multiple-effect evaporator, and device fabrication cost is also low compared with multiple-effect.6, concentrated solution carries out heat exchange with the steam of heating tube bundle outside in the heating tube bundle of well heater, and in heating tube bundle, concentrated solution flow velocity is fast, and surging force is large, and heating tube bundle is less scaling.And transverse tube type vaporizer is by evaporating at the outside leaching vat that sprays of heating tube bundle, the outside easily fouling of heating tube bundle, vaporizer and the heater structure of the present invention's design are simple, and it is also easy to clean.7, the leaching vat of input is first by water of condensation interchanger, promote certain temperature, again by the steam heating in gas heat exchanger, because although the steam in gas is roughly the same with the temperature of phlegma, but the heat of its release mostly is heat of condensation, can in the situation that temperature reduction is lower, discharge a large amount of heats, enter the temperature before vaporizer thereby improve after overall rubbish leachate preheats, save the more energy.
Brief description of the drawings
Fig. 1 is rubbish leachate treatment system schematic diagram of the present invention.
Embodiment
Below technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
Embodiment:
The rubbish leachate treatment system of the present embodiment as shown in Figure 1, comprise vaporizer 1, well heater 2, vapour compressor 3, vaporizer body is vertical tank body, vaporizer top is provided with vapour outlet 4, vaporizer middle part is provided with rubbish leachate feed-pipe 5 and concentrated solution return line 6, and vaporizer bottom is provided with concentrated solution outlet 7; In well heater, be provided with multiple concentrated solution heating tube bundles 8, vaporizer concentrated solution outlet 7 is connected by forced circulation pump 9 with the concentrated solution entrance 10 that is communicated with well heater 2 heating tube bundles, heater heats tube bank outlet 12 connects vaporizer concentrated solution backflow import 6, and vaporizer vapour outlet 4 is connected by vapour compressor 3 with well heater steam inlet 11.
Vaporizer inside arranges steam-out (SO) pipe, and steam-out (SO) pipe thermal source is garbage burning factory steam.Preheating percolate when steam-out (SO) is used for starting shooting.
Heater base is provided with condensation-water drain 13, and condensation-water drain is connected with solidifying water transfer tank 16, and solidifying water transfer tank 16 is connected with water of condensation interchanger 17, and rubbish leachate feed-pipe also connects water of condensation interchanger.Water of condensation enters solidifying water pot 18 after the heat exchange of water of condensation interchanger, and solidifying water pot is provided with drip pipe, and water of condensation enters next process processing.
Well heater 2 is provided with that well heater uncondensated steam outlet 14, solidifying water transfer tank 16 tops are provided with first outlet pipe 21, solidifying water pot 18 tops are provided with second exhaust pipe 22, well heater uncondensated steam outlet 14, first outlet pipe 21 are all connected gas heat exchanger 19 with second exhaust pipe 22, gas heat exchanger outlet connects gas-liquid separator 20, gas-liquid separator pneumatic outlet connects vacuum pump 23, vacuum pump 23 withdrawing gas from gas-liquid separator is disposed to atmosphere, and gas-liquid separator liquid exit connects solidifying water pot 18.Water of condensation interchanger 17 and gas heat exchanger 19 are arranged in parallel.But, both settings of also can connecting, and, from the Article 6 of beneficial effect, the water of condensation interchanger 17 of first connecting, then the gas heat exchanger 19 of connecting, the efficiency that preheats of rubbish leachate can be higher.
Between vaporizer concentrated solution outlet 7 and forced circulation pump 9, be connected with concentrated solution discharging pump 15.
The equipment of vapo(u)rization system is worked under negative pressure, first, steam-out (SO) passes in the rubbish leachate of base of evaporator, heating rubbish leachate, rubbish leachate is evaporated under negative pressure, water in leaching vat and ammonia become steam and are raised to vaporizer top, after rising to a little more than boiling point, vapour compressor compression temperature passes into well heater again, the leaching vat of vaporizer bottom is got in the heating tube bundle of well heater inside through forced circulation pump, thermal energy transfer is given the concentrated solution in tube bank by steam, concentrated solution temperature is back in vaporizer and again evaporates after raising, constantly circulation.The steam heating rubbish leachate that native system utilization evaporation self produces, has saved the energy.
Water of condensation and vapor temperature that evaporation starts rear system generation are higher, recoverable.Rubbish leachate carries out heat exchange with water of condensation, solidifying steam/a small amount of uncondensated steam before entering vaporizer in water of condensation interchanger and gas heat exchanger, when rubbish leachate temperature improves, water of condensation and vapor temperature reduce, reclaim energy, and without special refrigerating unit is set.After the normal operation of native system, can close steam-out (SO), only utilize the energy of system self generation and the electric energy of vapour compressor can make to evaporate steady running.
Water of condensation after heat exchange enters down treatment process one, can be the techniques such as ammonia stripping, ion-exchange, and the non-condensable gases after gas-liquid separation is squeezed in garbage burning factory incinerator after being extracted out by vacuum pump, prevents secondary pollution.Concentrated solution is discharged continuously or intermittently by discharging pump, squeeze into rubbish feed bin laggard enter incinerator burn.
As mentioned above, although represented and explained the present invention with reference to specific preferred embodiment, it shall not be construed as the restriction to the present invention self.Not departing under the spirit and scope of the present invention prerequisite of claims definition, can make in the form and details various variations to it.

Claims (6)

1. a rubbish leachate treatment system, is characterized in that, comprises vaporizer (1), well heater (2) and vapour compressor (3); Vaporizer (1) is provided with vapour outlet (4), leachate feed-pipe (5), concentrated solution return line (6) and concentrated solution outlet (7); Well heater (2) is provided with concentrated solution entrance (10), well heater steam inlet (11), concentrated solution outlet (12), condensation-water drain (13), uncondensated steam outlet (14); The vapour outlet (4) of described vaporizer (1) is connected to vapour compressor (3), and vapour compressor (3) outlet is communicated with the well heater steam inlet (11) of well heater (2); The concentrated solution outlet (7) of described vaporizer is divided into two-way, one tunnel is communicated to concentrated solution discharging pump (15), another road is communicated to forced circulation pump (9), forced circulation pump (9) is communicated to the concentrated solution entrance (10) of well heater (2), and the concentrated solution outlet (12) of well heater (2) is communicated to the concentrated solution return line (6) of vaporizer (1).
2. leachate treatment system according to claim 1, is characterized in that, comprises water of condensation interchanger (17) and gas heat exchanger (19); The condensation-water drain (13) of well heater (2) is communicated to water of condensation interchanger (17); The uncondensated steam outlet (14) of well heater (2) is communicated to gas heat exchanger (19), and leachate is communicated to the leachate feed-pipe (5) of vaporizer (1) after water of condensation interchanger (17) and gas heat exchanger (19) heating again.
3. leachate treatment system according to claim 2, it is characterized in that, leachate is first communicated to water of condensation interchanger (17), then is communicated to gas heat exchanger (19), and then is communicated to the leachate feed-pipe of vaporizer (1).
4. leachate treatment system according to claim 2, it is characterized in that, leachate is divided into two-way, is communicated to respectively gas heat exchanger (19) and water of condensation interchanger (17) and converges into a road again and be communicated to the leachate feed-pipe of vaporizer (1).
5. leachate treatment system according to claim 2, is characterized in that, comprises solidifying water transfer tank (16), solidifying water pot (18) and gas-liquid separator (20); The condensation-water drain (13) of described well heater is communicated with water of condensation interchanger (17) by solidifying water transfer tank (16); On water of condensation interchanger (17), be provided with the condensation-water drain that is communicated with solidifying water pot (18); On gas heat exchanger (19), be provided with the pneumatic outlet that is communicated with gas-liquid separator (20); Described gas-liquid separator (20) is provided with pneumatic outlet and liquid exit, and wherein pneumatic outlet expellant gas is disposed to atmosphere, and liquid exit is communicated to solidifying water pot (18); Described solidifying water transfer tank (16) arranges first outlet pipe (21), described solidifying water pot (18) is provided with second exhaust pipe (22), and first outlet pipe (21) and second exhaust pipe (22) are all communicated to gas heat exchanger (20).
6. leachate treatment system according to claim 2, it is characterized in that, described vaporizer (1) is vertical tank body, described well heater (2) is horizontal tank body, well heater is provided with multiple heating tube bundles in (2), space in well heater is divided into heating tube bundle inside and heating tube bundle outside, and concentrated solution carries out heat exchange with the steam of heating tube bundle outside in heating tube bundle.
CN201410164672.6A 2014-04-22 2014-04-22 Rubbish leachate treatment system Expired - Fee Related CN103910399B (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105621767A (en) * 2014-10-27 2016-06-01 北京春景辉节能环保科技有限公司 Garbage osmosis liquid reverse osmosis concentration treatment apparatus
CN105824252A (en) * 2015-01-06 2016-08-03 中国科学院沈阳自动化研究所 Efficient energy-saving domestic waste leachate treatment system and method
CN105859009A (en) * 2016-06-02 2016-08-17 北京神雾环境能源科技集团股份有限公司 Treatment system and method for landfill leachate
CN106865661A (en) * 2017-03-16 2017-06-20 楚天华通医药设备有限公司 A kind of plug-in heat pressing type distilled water preparation system
CN107857323A (en) * 2017-12-19 2018-03-30 国丰新能源江苏有限公司 The apparatus and method handled with reference to MVR garbage percolation concentrate
CN107935293A (en) * 2018-01-08 2018-04-20 山东特保罗环保节能科技有限公司 A kind of high-salt wastewater processing equipment
CN111233063A (en) * 2020-01-21 2020-06-05 同济大学 Non-contact-surface and efficient low-temperature evaporation system for landfill leachate
CN115814442A (en) * 2022-11-28 2023-03-21 江苏博隆锦欣环保设备有限公司 Low-temperature heat pump evaporator and working method thereof

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JPS6150690A (en) * 1984-08-16 1986-03-12 Mitsubishi Heavy Ind Ltd Apparatus for preparing distilled solution
CN102838244A (en) * 2012-08-16 2012-12-26 广州新普利节能环保科技有限公司 Landfill leachate treatment process and device
CN202744415U (en) * 2012-08-16 2013-02-20 广州新普利节能环保科技有限公司 Landfill leachate treatment device
CN204173942U (en) * 2014-04-22 2015-02-25 东南大学 Rubbish leachate treatment system

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPS6150690A (en) * 1984-08-16 1986-03-12 Mitsubishi Heavy Ind Ltd Apparatus for preparing distilled solution
CN102838244A (en) * 2012-08-16 2012-12-26 广州新普利节能环保科技有限公司 Landfill leachate treatment process and device
CN202744415U (en) * 2012-08-16 2013-02-20 广州新普利节能环保科技有限公司 Landfill leachate treatment device
CN204173942U (en) * 2014-04-22 2015-02-25 东南大学 Rubbish leachate treatment system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105621767A (en) * 2014-10-27 2016-06-01 北京春景辉节能环保科技有限公司 Garbage osmosis liquid reverse osmosis concentration treatment apparatus
CN105824252A (en) * 2015-01-06 2016-08-03 中国科学院沈阳自动化研究所 Efficient energy-saving domestic waste leachate treatment system and method
CN105824252B (en) * 2015-01-06 2018-07-20 中国科学院沈阳自动化研究所 A kind of energy-efficient Household garbage leachate treatment system and method
CN105859009A (en) * 2016-06-02 2016-08-17 北京神雾环境能源科技集团股份有限公司 Treatment system and method for landfill leachate
CN106865661A (en) * 2017-03-16 2017-06-20 楚天华通医药设备有限公司 A kind of plug-in heat pressing type distilled water preparation system
CN107857323A (en) * 2017-12-19 2018-03-30 国丰新能源江苏有限公司 The apparatus and method handled with reference to MVR garbage percolation concentrate
CN107935293A (en) * 2018-01-08 2018-04-20 山东特保罗环保节能科技有限公司 A kind of high-salt wastewater processing equipment
CN107935293B (en) * 2018-01-08 2024-03-12 山东特保罗环保节能科技有限公司 High-salt wastewater treatment equipment
CN111233063A (en) * 2020-01-21 2020-06-05 同济大学 Non-contact-surface and efficient low-temperature evaporation system for landfill leachate
CN115814442A (en) * 2022-11-28 2023-03-21 江苏博隆锦欣环保设备有限公司 Low-temperature heat pump evaporator and working method thereof

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