CN211169932U - Leachate treatment system of hazardous waste disposal center - Google Patents
Leachate treatment system of hazardous waste disposal center Download PDFInfo
- Publication number
- CN211169932U CN211169932U CN201921945340.6U CN201921945340U CN211169932U CN 211169932 U CN211169932 U CN 211169932U CN 201921945340 U CN201921945340 U CN 201921945340U CN 211169932 U CN211169932 U CN 211169932U
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- China
- Prior art keywords
- evaporimeter
- separator
- tail gas
- treatment system
- waste disposal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002920 hazardous waste Substances 0.000 title claims description 9
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000007791 liquid phase Substances 0.000 claims abstract description 8
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 239000012153 distilled water Substances 0.000 claims description 16
- 238000000746 purification Methods 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 abstract description 12
- 230000008020 evaporation Effects 0.000 abstract description 11
- 238000000926 separation method Methods 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 28
- 239000000149 chemical water pollutant Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model relates to a useless center leachate processing system of handling of danger, including feeding unit, evaporimeter, separator, MVR compressor unit, the feeding unit passes through the circulating pump and links to each other with the feed end of evaporimeter, the discharge end of evaporimeter loops through the return air end cyclic connection of separator and MVR compressor unit with the evaporimeter, the bottom export of separator links to each other with the feed end of evaporimeter through the circulating pump, separator liquid phase exit is equipped with the concentrated liquid pump, the utility model discloses an evaporation separation method handles filtration liquid, evaporates filtration liquid moisture and is used for the feeding to preheat, and the concentrated liquid separation is handled, and the power consumption is low, and is efficient, and the separation is complete.
Description
Technical Field
The utility model relates to a waste liquid treatment technical field, concretely relates to useless center leachate treatment system of handling of danger.
Background
The landfill leachate is high-concentration wastewater which is formed by deducting the saturated water holding capacity of garbage and a soil covering layer from water contained in the garbage in a garbage landfill, rain, snow and water entering the landfill and other water and passing through the garbage layer and the soil covering layer.
The water quality of the landfill leachate is quite complex, the landfill leachate generally contains high-concentration organic matters, heavy metal salts, SS and ammonia nitrogen, the landfill leachate not only pollutes soil and surface water sources, but also pollutes underground water, a lot of researches on removing CODCr in the landfill leachate are carried out, a biological method is generally adopted for treatment, but the treatment effect is not ideal, and the operation cost is relatively high.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing a useless center filtration liquid processing system of handling of danger adopts the evaporation separation method to handle landfill leachate.
The utility model aims at realizing through the following technical scheme: including feeding unit, evaporimeter, separator, MVR compressor unit, the feeding unit passes through the circulating pump and links to each other with the feed end of evaporimeter, the discharge end of evaporimeter loops through separator and MVR compressor unit and the return-air end cyclic connection of evaporimeter, the bottom export of separator passes through the circulating pump and links to each other with the feed end of evaporimeter, separator liquid phase exit is equipped with the concentrated liquid pump.
In a preferred embodiment, the liquid phase outlet of the evaporator is connected to a condensate tank.
In a preferred embodiment, the feeding unit comprises a feeding pump, a distilled water heat exchanger and a tail gas heat exchanger which are sequentially connected, wherein a condensed water inlet end and a water outlet end are arranged on the distilled water heat exchanger, the condensed water inlet end is connected with a condensed water tank, a tail gas inlet end and a gas outlet end are arranged on the tail gas heat exchanger, the tail gas inlet end is communicated with a tail gas outlet at the top of the evaporator, and a negative pressure device is arranged at the tail gas outlet end.
In a preferred embodiment, an acid-base purification tower is arranged between the separator and the MVR compressor unit.
In a preferred embodiment, the evaporator is connected to a steam generator.
In a preferred embodiment, the MVR compressor unit comprises a vapor compressor, a motor driving the vapor compressor, and a frequency converter connected to the motor.
The utility model has the advantages that:
1. the leachate is treated by an evaporation separation method, water in the leachate is evaporated and used for preheating the feed, and the concentrated solution is separated, so that the energy consumption is low, the efficiency is high, and the separation is complete;
2. the liquid separated in the evaporator is repeatedly evaporated and separated, and secondary steam is recycled, so that energy is saved, and the treatment is more complete.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a connection block diagram of a leachate treatment system in a hazardous waste disposal center according to an embodiment of the present invention;
fig. 2 is the equipment connection diagram of the leachate treatment system in the hazardous waste disposal center according to the embodiment of the present invention.
In the figure:
1. an evaporator; 2. a separator; 3. an acid-base purification tower; 4. an MVR compressor unit; 5. a circulation pump; 6. a feed pump; 7. a distilled water heat exchanger; 8. a tail gas heat exchanger; 9. a steam generator; 10. a concentrate pump; 11. a negative pressure device; 12. a condensate tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The invention will be further described with reference to the drawings and specific examples.
As shown in fig. 1-2, the utility model discloses a useless center leachate treatment system of handling of danger, including feeding unit, evaporimeter 1, separator 2, MVR compressor unit 4, evaporimeter 2 adopts the forced circulation negative pressure evaporation plant of pipe that crouches, adopts the advantage of negative pressure evaporation: to increase the production strength of the evaporation apparatus, the steam temperature may be increased, or the boiling point of the solution may be decreased. The negative pressure evaporation can reduce the boiling point of the solution, improve the heat transfer temperature difference and prevent heat-sensitive substances from being damaged, and because the percolate has corrosivity, the flow passage component adopts titanium materials and the rest adopt stainless steel materials in consideration of long-term operation. The feeding unit passes through circulating pump 5 and links to each other with the feed end of evaporimeter 1, and the discharge end of evaporimeter 1 loops through separator 2 and MVR compressor unit 4 and evaporimeter 1's return-air end circular connection, and separator 2 is vapour and liquid separator, and the flash steam that comes out from separator 2 passes through vapor compressor's compression and intensifies temperature, squeezes into evaporimeter 1 heating material again, reaches cyclic utilization flash steam's purpose to also saved the energy, many times evaporation and separation, it is more complete to handle. The bottom outlet of the separator 2 is connected with the feed end of the evaporator 1 through a circulating pump 5, the residual liquid in the separator 2 is subjected to secondary treatment, and a concentrated liquid pump 10 is arranged at the liquid phase outlet of the separator 2. The concentrated solution is separated from the separator 2 and incinerated.
The liquid phase outlet of the evaporator 1 is connected with a condensed water tank 12 in sequence.
The feeding unit comprises a feeding pump 6, a distilled water heat exchanger 7 and a tail gas heat exchanger 8 which are sequentially connected, a condensed water inlet end and a water outlet end are arranged on the distilled water heat exchanger 7, the condensed water inlet end and the water outlet end are a water inlet and a water outlet of a heat exchange tube in the distilled water heat exchanger 7, the condensed water inlet end is connected with a condensed water tank 12, steam distilled water comes from secondary steam condensate of the evaporator 1, the steam distilled water is collected to the condensed water tank 12 and then is pumped to the distilled water heat exchanger 7 through a distilled water pump to perform heat exchange with raw material liquid, and then is discharged out of the system and is discharged out of the system through the water outlet end (not in the system). Be equipped with the tail gas inlet end on the tail gas heat exchanger 8 and give vent to anger the end, the tail gas inlet end with give vent to anger the end and be the air inlet and the gas outlet of the heat exchange tube in the tail gas heat exchanger 8, the tail gas inlet end communicates with the tail gas export at 1 top of evaporimeter, the tail gas end of giving vent to anger department is equipped with negative pressure device 11, and negative pressure device 11 is steam jet ware or vacuum pump, and negative pressure device 11 gives vent to anger and holds outside system odor treatment system (not in this system). The percolate is pumped by a feed pump 6 into a distilled water heat exchanger 7 and a tail gas heat exchanger 8, so that the percolate is preheated by the tail gas and the distilled water discharged from the system, and simultaneously the temperature of the tail gas and the distilled water discharged from the system is also reduced.
After the system operates for a period of time, the accumulation of tail gas (noncondensable gas) in the evaporator 1 has a serious influence on the heat exchange effect of the evaporator 1. The non-condensable gas is water vapor condensed in the saturated water vapor heating process, and air (gas components such as main components O2, N2 and the like) entrained in the non-condensable gas is still in a gaseous state except a very small amount dissolved in the condensed water, and the gas does not condense, dilutes the steam originally used as a heating medium, and greatly influences the heat transfer efficiency. It is known from experience that the non-condensable gases are not distributed uniformly in the condensation space, but are generally distributed at the top of the evaporator 1 depending on the density. And treating the tail gas by adopting a deodorizing device.
The leachate after preheating enters the evaporator 1 after being mixed by the circulating pump 5, a heating chamber in the evaporator 1 is heated, boiled and evaporated to form regenerated steam, the pressure and the temperature of the steam are improved by the efficient steam compressor to form saturated steam which enters a shell side part of a heat exchange tube bundle in the evaporator 1, on one hand, heat energy is transferred to feed liquid in the heat exchange tube bundle to form evaporation, on the other hand, the saturated steam is cooled in the shell side to form condensate water, and the condensate water is discharged from a liquid phase outlet of the evaporator 1 and enters the condensate water tank 12.
An acid-base purification tower 3 is arranged between the separator 2 and the MVR compressor unit 4. The evaporated water is changed into steam, the steam is subjected to steam-liquid separation through a separator 2 and then enters an acid-base purification tower 3, ammonia nitrogen volatilized from the garbage leachate reacts with sulfuric acid in a secondary steam acid purification unit to generate ammonium sulfate, the ammonia nitrogen is removed, and the concentration of the ammonia nitrogen in the distilled water reaches the emission standard. And continuously feeding the steam after the secondary steam acid purification unit into a secondary steam alkali purification unit, reacting organic matter fatty acid, humic acid and other acidic organic matters in the steam with sodium hydroxide, and removing CODcr.
The evaporator 1 is connected to a steam generator 9. Steam generated by the evaporation of the waste water passes through a steam compressor and is used as a heat source to return to an evaporation system, and then the waste water is evaporated. Since steam is lost, the steam generator 9 supplements this loss, and no steam is generated at the very start of the system, and the initial steam is supplied by the steam generator 9.
The MVR compressor unit 4 includes a vapor compressor, a motor driving the vapor compressor, and a frequency converter connected to the motor. The vapor compressor is in a centrifugal type, the compression medium is secondary vapor generated in the separator, the compression ratio is high, the thermal efficiency is high, energy is saved, the specific energy consumption is low, the energy consumption for evaporating one ton of clear water is about 1/6 to 1/5 (when materials are different, the energy consumption is changed), and the operation cost is greatly reduced. Low operation cost: because of low energy consumption, the operation cost of the corresponding whole evaporator is greatly reduced and is only one third to one half of the traditional evaporator.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a useless treatment center leachate processing system of danger which characterized in that: including feeding unit, evaporimeter, separator, MVR compressor unit, the feeding unit passes through the circulating pump and links to each other with the feed end of evaporimeter, the discharge end of evaporimeter loops through separator and MVR compressor unit and the return-air end cyclic connection of evaporimeter, the bottom export of separator passes through the circulating pump and links to each other with the feed end of evaporimeter, separator liquid phase exit is equipped with the concentrated liquid pump.
2. The hazardous waste disposal center leachate treatment system of claim 1, wherein: and a liquid phase outlet of the evaporator is connected with a condensed water tank.
3. The hazardous waste disposal center leachate treatment system of claim 2, wherein: the feeding unit comprises a feeding pump, a distilled water heat exchanger and a tail gas heat exchanger which are sequentially connected, wherein a condensed water inlet end and a water outlet end are arranged on the distilled water heat exchanger, the condensed water inlet end is connected with a condensed water tank, a tail gas inlet end and a gas outlet end are arranged on the tail gas heat exchanger, the tail gas inlet end is communicated with a tail gas outlet at the top of the evaporator, and a negative pressure device is arranged at the gas outlet end of the tail gas.
4. The hazardous waste disposal center leachate treatment system of claim 1, wherein: an acid-base purification tower is arranged between the separator and the MVR compressor unit.
5. The hazardous waste disposal center leachate treatment system of claim 1, wherein: the evaporator is connected with the steam generator.
6. The hazardous waste disposal center leachate treatment system of claim 1, wherein: the MVR compressor unit comprises a vapor compressor, a motor driving the vapor compressor and a frequency converter connected with the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921945340.6U CN211169932U (en) | 2019-11-12 | 2019-11-12 | Leachate treatment system of hazardous waste disposal center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921945340.6U CN211169932U (en) | 2019-11-12 | 2019-11-12 | Leachate treatment system of hazardous waste disposal center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211169932U true CN211169932U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921945340.6U Expired - Fee Related CN211169932U (en) | 2019-11-12 | 2019-11-12 | Leachate treatment system of hazardous waste disposal center |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110790333A (en) * | 2019-11-12 | 2020-02-14 | 卢浮恩环境科技(北京)有限公司 | Leachate treatment system of hazardous waste disposal center |
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2019
- 2019-11-12 CN CN201921945340.6U patent/CN211169932U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110790333A (en) * | 2019-11-12 | 2020-02-14 | 卢浮恩环境科技(北京)有限公司 | Leachate treatment system of hazardous waste disposal center |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20200804 |