CN103910399B - Rubbish leachate treatment system - Google Patents
Rubbish leachate treatment system Download PDFInfo
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- CN103910399B CN103910399B CN201410164672.6A CN201410164672A CN103910399B CN 103910399 B CN103910399 B CN 103910399B CN 201410164672 A CN201410164672 A CN 201410164672A CN 103910399 B CN103910399 B CN 103910399B
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- concentrated solution
- vaporizer
- well heater
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000006200 vaporizer Substances 0.000 claims abstract description 42
- 230000008676 import Effects 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000009833 condensation Methods 0.000 claims description 30
- 230000005494 condensation Effects 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 18
- 238000012546 transfer Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 15
- 238000001704 evaporation Methods 0.000 description 10
- 230000008020 evaporation Effects 0.000 description 10
- 238000002386 leaching Methods 0.000 description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009264 composting Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 208000006750 hematuria Diseases 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of rubbish leachate treatment system, 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, heater steam import, concentrated solution outlet, condensation-water drain, uncondensated steam outlet; The vapour outlet of described vaporizer is connected to vapour compressor, the heater steam import of vapour compressor outlet 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.Vapo(u)rization system thermal source of the present invention mainly adopts the secondary steam self produced.Secondary steam utilizes as thermal source by again.
Description
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 for waste treatment and disposal mainly comprises garbage loading embeading, composting process, burning method etc., and burning method is relative to traditional garbage loading embeading, composting process, because having the advantage of the aspects such as minimizing, innoxious, resource utilization, obtains good development.
In order to ensure firing efficiency in Refuse Incineration Process, fresh rubbish need be piled ferment in refuse pit and burn again after 3 ~ 7 days, and this process creating rubbish leachate.Leaching vat is a kind of unmanageable poisonous and hazardous high concentrated organic wastewater, and in tawny or beige, the gas volatilized, with fetor, has harm to human body, and people can be made to 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 the water vapour of water ebullition, gasification and constantly removing gasification.During 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 weak than water, therefore can be retained in concentrated solution, only have some volatile hydrocarbon, the pollutent such as VFA and ammonia can enter steam, is 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 that evaporation unit is complicated, energy consumption is high, running cost is high, easy fouling, cleaning are 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, heater steam import, concentrated solution outlet, condensation-water drain, uncondensated steam outlet; The vapour outlet of described vaporizer is connected to vapour compressor, the heater steam import of vapour compressor outlet 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, water of condensation interchanger and gas heat exchanger is also comprised; The condensation-water drain of well heater is communicated to water of condensation interchanger; The uncondensated steam outlet of well heater is to gas heat exchanger, and leachate is communicated to the leachate feed-pipe of vaporizer again after water of condensation interchanger and gas heat exchanger heating.
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 gas heat exchanger respectively and water of condensation interchanger converges into the leachate feed-pipe that a road is communicated to vaporizer again.
Further, solidifying water transfer tank, solidifying water pot and gas-liquid separator is also comprised; The condensation-water drain of described well heater is communicated with water of condensation interchanger by solidifying water transfer tank; Water of condensation interchanger is provided with the condensation-water drain being communicated with solidifying water pot; Gas heat exchanger is provided with the pneumatic outlet being 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 air, 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 bundle in well heater, space in well heater is divided into heating tube bundle inside and heating tube bundle outside, 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 produced.Secondary steam utilizes as thermal source by again.After secondary steam is collected together, carry out boosting temperature raising through vapour compressor, as the heating source of self in the well heater being delivered to vapo(u)rization system afterwards, while condensation the enthalpy heat trnasfer of self to the leaching vat of opposite side.Leaching vat after heating is produced secondary steam by while heating evaporation in vaporizer, constantly circulates thus.2, without the need to arranging refrigerating unit large-scale specially.After boosting temperature raising as the secondary steam condensation of thermal source after, can by interchanger with carry out liquid and carry out heat exchange, after the heat of self overwhelming majority passed to liquid, just leave system, both reclaimed energy, also serve the effect cooled.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, it needs a small amount of electrical energy fed vapour compressor, by vapour compressor secondary steam boosted temperature raising to one slightly higher than secondary steam can position.4, the vapo(u)rization system described in native system is evaporated under negative pressure low temperature, saves steam consumption, and negative pressure low-temperature evaporation is conducive to reducing organic concentration in steam, improves organic removal effect.5, invest low, structure is simple, and operation runs easily.Structurally it is equivalent to a single-effect evaporator to vaporizer of the present invention, and effect is equivalent to a multiple-effect evaporator, and it does not have the Controlling System of the complexity required by multiple-effect evaporator, and also comparatively multiple-effect is low for device fabrication cost.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 evaporates by spraying leaching vat in heating tube bundle outside, 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, a large amount of heats can be discharged when temperature reduces lower, thus improve the temperature before entering vaporizer after overall rubbish leachate preheats, save the more energy.
Accompanying drawing explanation
Fig. 1 is rubbish leachate treatment system schematic diagram of the present invention.
Embodiment
Below technical solution of the present invention is described in detail, 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, be provided with rubbish leachate feed-pipe 5 and concentrated solution return line 6 in the middle part of vaporizer, vaporizer bottom is provided with concentrated solution outlet 7; Multiple concentrated solution heating tube bundle 8 is provided with in well heater, vaporizer concentrated solution outlet 7 is connected by forced circulation pump 9 with the concentrated solution entrance 10 being communicated with well heater 2 heating tube bundle, 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 heater steam import 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 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 process.
Well heater 2 is provided with well heater uncondensated steam outlet 14, solidifying water transfer tank 16 top is provided with first outlet pipe 21, solidifying water pot 18 top is 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 air, 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 also can be arranged in series, and from the Article 6 of beneficial effect, water of condensation interchanger 17 of first connecting, then gas heat exchanger 19 of connecting, the preheat efficiency of rubbish leachate can be higher.
Concentrated solution discharging pump 15 is connected with between vaporizer concentrated solution outlet 7 and forced circulation pump 9.
The equipment of vapo(u)rization system works 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, rise to through vapour compressor compression temperature again and pass into well heater a little more than after boiling point, the leaching vat of vaporizer bottom is got in the heating tube bundle of heater body through forced circulation pump, thermal energy transfer is given the concentrated solution in tube bank by steam, concentrated solution temperature is back in vaporizer after raising evaporates again, continuous circulation.The steam heating rubbish leachate that native system utilizes evaporation self to produce, saves the energy.
Evaporation start rear system produce water of condensation and vapor temperature higher, recoverable.In water of condensation interchanger and gas heat exchanger, heat exchange is carried out with water of condensation, solidifying steam/a small amount of uncondensated steam before rubbish leachate enters vaporizer, while rubbish leachate temperature improves, water of condensation and vapor temperature reduce, reclaim energy, and without the need to arranging special refrigerating unit.Can close steam-out (SO) after native system normally runs, the energy only utilizing system self to produce and the electric energy of vapour compressor can make evaporation steady running.
Water of condensation after heat exchange enters down one treatment process, can be the technique such as ammonia aeration, 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 by discharging pump continuously or interval discharge, squeeze into rubbish feed bin laggard enter incinerator burn.
As mentioned above, although represented with reference to specific preferred embodiment and described the present invention, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite not departing from claims definition, various change can be made in the form and details 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), heater steam import (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), the heater steam import (11) of vapour compressor (3) outlet 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. rubbish 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); 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) again after water of condensation interchanger (17) and gas heat exchanger (19) heating.
3. rubbish 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. rubbish leachate treatment system according to claim 2, it is characterized in that, leachate is divided into two-way, is communicated to gas heat exchanger (19) respectively and water of condensation interchanger (17) converges into the leachate feed-pipe that a road is communicated to vaporizer (1) again.
5. rubbish 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); Water of condensation interchanger (17) is provided with the condensation-water drain being communicated with solidifying water pot (18); Gas heat exchanger (19) is provided with the pneumatic outlet being 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 air, 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 (19).
6. rubbish 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 bundle in (2), space in well heater is divided into heating tube bundle inside and heating tube bundle outside, concentrated solution carries out heat exchange with the steam of heating tube bundle outside in heating tube bundle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410164672.6A CN103910399B (en) | 2014-04-22 | 2014-04-22 | Rubbish leachate treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410164672.6A CN103910399B (en) | 2014-04-22 | 2014-04-22 | Rubbish leachate treatment system |
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| Publication Number | Publication Date |
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| CN103910399A CN103910399A (en) | 2014-07-09 |
| CN103910399B true CN103910399B (en) | 2016-04-20 |
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| CN201410164672.6A Expired - Fee Related CN103910399B (en) | 2014-04-22 | 2014-04-22 | Rubbish leachate treatment system |
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Families Citing this family (8)
| 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 |
| 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 |
| 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 |
| CN111233063B (en) * | 2020-01-21 | 2022-06-07 | 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 |
Family Cites Families (4)
| 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 |
| 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 |
| 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 |
| CN204173942U (en) * | 2014-04-22 | 2015-02-25 | 东南大学 | Rubbish leachate treatment system |
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| CN103910399A (en) | 2014-07-09 |
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