CN212174700U - Multistage enrichment facility of landfill leachate - Google Patents
Multistage enrichment facility of landfill leachate Download PDFInfo
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- CN212174700U CN212174700U CN202020489133.0U CN202020489133U CN212174700U CN 212174700 U CN212174700 U CN 212174700U CN 202020489133 U CN202020489133 U CN 202020489133U CN 212174700 U CN212174700 U CN 212174700U
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Abstract
The utility model discloses a multistage concentration device for landfill leachate, which comprises a mixing device, an ultrafiltration membrane device, a nanofiltration membrane device, a reverse osmosis membrane device, a dryer, an ultrafiltration water inlet pump, a nanofiltration water inlet pump, a reverse osmosis water inlet pump, a nanofiltration water inlet pump and a reverse osmosis water outlet pump, the mixing device, the ultrafiltration membrane device, the nanofiltration membrane device, the reverse osmosis membrane device and the dryer are connected in sequence, the ultrafiltration water inlet pump is connected between the mixing device and the concentrated solution area of the ultrafiltration membrane device, the nanofiltration water inlet pump is connected between the clear solution area of the ultrafiltration membrane device and the concentrated solution area of the nanofiltration membrane device, the reverse osmosis water inlet pump is connected between the concentrated solution area of the nanofiltration membrane device and the concentrated solution area of the reverse osmosis membrane device, the desicator intake pump is connected between the concentrate district and the desicator of reverse osmosis membrane device, receive and filter out water pump and reverse osmosis water pump and connect respectively on receiving the clear solution export of filter membrane device and reverse osmosis membrane device. The utility model has the characteristics of the concentration is efficient and the running cost is low.
Description
Technical Field
The utility model relates to a landfill leachate treatment technology especially relates to a landfill leachate multistage enrichment facility processing technology or burn factory.
Background
At present, municipal solid waste is mainly treated in a burning and sanitary landfill mode, and landfill leachate with extremely high pollutant concentration and complex components is generated in the treatment process and is a pollution source, and if the municipal solid waste is not treated properly, the ecological environment and the daily life of people are affected extremely adversely. Therefore, the landfill leachate must be treated in a harmless manner to reach the national discharge standard before being discharged.
The characteristics of the landfill leachate: the landfill leachate belongs to high-concentration sewage and seriously pollutes the environment and underground water. The concrete aspects are as follows: first, landfill leachate has complex components and numerous pollutant species. The organic pollutant, toxic substance, harmful substance, heavy metal substance, etc. which can be degraded or difficultly degraded are contained in the organic pollutant. Secondly, the landfill leachate contains too high a concentration of pollutants, and as the landfill time increases, the leachate biodegradability is worse. Thirdly, the landfill leachate has various metal ion concentrations and various types. Fourthly, the life of the garbage in the landfill site is continuously prolonged, organic nitrogen is converted into inorganic nitrogen, and phosphorus element in the leachate is deficient, so that the concentration of the dissolved phosphate is reduced.
The damage of the landfill leachate: the landfill leachate is used as high-concentration polluted wastewater, has high concentration, heavy pollution, slow liquidity and long percolation duration, seriously pollutes environment and underground water, and even causes serious and difficult-to-save pollution to surrounding soil. Therefore, landfill leachate is one of the most difficult polluted wastewater to treat at present, contains a large amount of carbohydrates and organic substances, and is difficult to degrade. Meanwhile, a large amount of microbial viruses exist in the landfill leachate, and serious environmental pollution is caused as the landfill leachate continuously pollutes the environment and underground water.
Because the concentration of the leachate is high and the components are complex, special requirements are put forward on the treatment process. Generally speaking, the basic treatment process of landfill leachate still needs to optimize and combine several different treatment process units on the principle of fully utilizing the economic superiority of biochemical treatment, thereby obtaining economic and social ecological benefits. Several treatment processes are currently common including: 1) biological treatment, anaerobic biological treatment, aerobic biological treatment and anaerobic-aerobic biological treatment. 2) Physical treatment, chemical oxidation, flocculation-precipitation, activated carbon adsorption, and membrane technologies (ultrafiltration, nanofiltration, and reverse osmosis). 3) A combined process, AO-AO-MBR-NF process, DTRO process and MVC-DI process.
However, the urban domestic garbage has a plurality of sources, the generated landfill leachate has the characteristics of complex components, high organic matters, high ammonia nitrogen, high salt and the like, and the conventional biochemical combined treatment process cannot reach the discharge standard of the leachate. The added part of the landfill site is subjected to recharging treatment, which leads to further increase of pollutant concentration, reduction of biochemical system efficiency, high operation cost and the like. If the butterfly reverse osmosis (DTRO) is directly adopted for treatment, because impurity removal treatment is not carried out, the concentrations of suspended matters, organic matters and salt in front of the reverse osmosis membrane are higher, so that the problems of high operation cost, easy blockage of the reverse osmosis membrane, short service life of the reverse osmosis membrane and the like are caused. The MVC-DI process adopts a direct evaporation mode, has high energy consumption, and the evaporated solid pollutants are not stabilized and are easy to release again after being returned to a landfill.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide a multistage enrichment facility of filtration liquid that simple structure, concentration efficiency are high and the running cost is low.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
A multistage concentration device of landfill leachate is characterized by comprising a mixing device, an ultrafiltration membrane device, a nanofiltration membrane device, a reverse osmosis membrane device, a dryer, an ultrafiltration water inlet pump, a nanofiltration water inlet pump, a reverse osmosis water inlet pump, a nanofiltration water pump and a reverse osmosis water outlet pump, wherein the mixing device, the ultrafiltration membrane device, the nanofiltration membrane device and the dryer are sequentially connected through a pipeline, the ultrafiltration water inlet pump is connected between the mixing device and a concentrated solution area of the ultrafiltration membrane device, the nanofiltration water inlet pump is connected between a clear solution area of the ultrafiltration membrane device and a concentrated solution area of the nanofiltration membrane device, the reverse osmosis water inlet pump is connected between the concentrated solution area of the nanofiltration membrane device and the concentrated solution area of the reverse osmosis membrane device, the dryer water inlet pump is connected between the concentrated solution area of the reverse osmosis membrane device and the dryer, the nanofiltration water pump and the reverse osmosis water outlet pump are respectively connected to the clear liquid outlet of the nanofiltration membrane device and the clear liquid outlet of the reverse osmosis membrane device.
More preferably, the mixing device comprises an agitator and a stabilizer adding device connected with the agitator.
More preferably, the ultrafiltration membrane device comprises one or more of an internal pressure type ultrafiltration membrane device, an external pressure type ultrafiltration membrane device and an immersed type ultrafiltration membrane device.
More preferably, the ultrafiltration membrane of the ultrafiltration membrane device comprises one or more of a hollow fiber organic ultrafiltration membrane, a flat plate organic ultrafiltration membrane, a tubular organic ultrafiltration membrane, a flat plate inorganic ceramic membrane and a tubular inorganic ceramic membrane.
More preferably, the nanofiltration membrane device comprises one or more of a plate type nanofiltration membrane device, a tubular nanofiltration membrane device and a rolled nanofiltration membrane device.
More preferably, the nanofiltration membrane of the nanofiltration membrane device comprises one or more of a hollow fiber nanofiltration membrane, a cellulose acetate nanofiltration membrane, an aromatic polyamide nanofiltration membrane, a sulfonated polyether sulfone nanofiltration membrane, a ceramic nanofiltration membrane, a metal nanofiltration membrane and a molecular sieve nanofiltration membrane.
More preferably, the reverse osmosis membrane apparatus is a hollow fiber type reverse osmosis membrane apparatus.
More preferably, the reverse osmosis membrane device comprises one or more of a roll type reverse osmosis membrane device, a plate and frame type reverse osmosis membrane device and a tubular reverse osmosis membrane device.
More preferably, the dryer is one or more of a vacuum dryer, a low temperature dryer, a freeze vacuum dryer, a hot air dryer, and a thermal evaporation dryer.
More preferably, one or more of the ultrafiltration water inlet pump, the nanofiltration water inlet pump, the reverse osmosis water inlet pump, the nanofiltration water inlet pump and the reverse osmosis water outlet pump is a variable frequency pump.
The utility model has the advantages that:
because the contents of refractory organic matters and salt in the landfill leachate are high, particularly in a landfill site for recharging concentrated solution, the conductivity of the landfill leachate can reach 39000US/cm, the salt content reaches 1-3%, the COD can reach more than 15000mg/L, most of the landfill leachate is refractory organic matters, and the biochemical efficiency is low. The existing method for directly filtering the stock solution of landfill leachate by a butterfly reverse osmosis (DTRO) process can cause the problems of easy blockage of a reverse osmosis membrane, complex operation management, short membrane service life, high operation cost and the like. The direct evaporation (MVC process) and the ion exchange (DI) process easily cause the organic matters in the landfill leachate to be converted into VOC, so that secondary pollution is generated; and the operation cost of direct evaporation is high, and the finally formed solid is easy to separate out and cause secondary pollution after being re-buried because the finally formed solid does not have a stabilizing process. The utility model discloses a carry out stabilization treatment to landfill leachate, avoid the precipitation of organic matter. The particulate matter impurities in the landfill leachate stock solution are removed through ultrafiltration, and the membrane pollution of subsequent nanofiltration and reverse osmosis is reduced, so that the operation and management cost is reduced. Finally, the reverse osmosis concentrated solution is subjected to evaporation treatment to form stable solid organic waste residue and inorganic salt-containing waste residue, so that the stable full treatment of the landfill leachate is realized. The utility model discloses both can newly increase complete sets and handle landfill leachate, also can reform transform on current situation landfill leachate processing system.
Drawings
Fig. 1 shows that the utility model provides a multistage enrichment facility structure sketch of landfill leachate.
FIG. 2 is a schematic view showing the structure of a stabilizer adding apparatus.
Description of reference numerals:
1: mixing device, 2: ultrafiltration membrane apparatus, 3: nanofiltration membrane device, 4: reverse osmosis membrane device, 5: dryer, 6: ultrafiltration intake pump, 7: nanofiltration water inlet pump, 8: nanofiltration water pump, 9: reverse osmosis water pump, 10: reverse osmosis effluent pump, 11: dryer water pump, 12: stabilizer adding device.
12-1: a containing section, 12-2: conveying section, 12-3: a screw conveyor.
Detailed Description
In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.
The following description will be further made in conjunction with the accompanying drawings of the specification, so that the technical solution and the advantages of the present invention are clearer and clearer. The embodiments described below are exemplary and are intended to be illustrative of the present invention, but should not be construed as limiting the invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
As shown in fig. 1, a multistage concentration device for landfill leachate is characterized by comprising a mixing device 1, an ultrafiltration membrane device 2, a nanofiltration membrane device 3, a reverse osmosis membrane device 4, a dryer 5, an ultrafiltration water inlet pump 6, a nanofiltration water inlet pump 7, a reverse osmosis water inlet pump 9, a nanofiltration water outlet pump 8, a reverse osmosis water outlet pump 10 and a dryer water inlet pump 11, wherein the mixing device 1, the ultrafiltration membrane device 2, the nanofiltration membrane device 3, the reverse osmosis membrane device 4 and the dryer 5 are sequentially connected through a pipeline, the ultrafiltration water inlet pump 7 is connected between the mixing device 1 and a concentrated solution region of the ultrafiltration membrane device 2, the nanofiltration water inlet pump 8 is connected between a concentrated solution region of the ultrafiltration membrane device 2 and a concentrated solution region of the nanofiltration membrane device 3, the reverse osmosis water inlet pump 9 is connected between a concentrated solution region of the nanofiltration membrane device 3 and a concentrated solution region of the reverse osmosis membrane device 4, the desicator intake pump 11 is connected the dense fluid district of reverse osmosis membrane device 4 with between the desicator 5, receive filter out water pump 8 with reverse osmosis goes out water pump 10 and connects respectively receive filter membrane device 3's clear solution export with on reverse osmosis membrane device 4's the clear solution export.
In this embodiment, the mixing device 1 preferably includes a stirrer and a stabilizer adding device 12 connected to the stirrer. Preferably, the stabilizer adding device 12 is a solid powder adding device, as shown in fig. 2, and comprises a containing section 12-1 and a conveying section 12-1 which are communicated with each other, stabilizer powder is arranged in the containing section 12-1, a screw conveyor 12-3 is arranged in the conveying section 12-2, and the stabilizer powder contained in the containing section is conveyed to the conveying section by rotating the screw conveyor 12-3 and falls into the mixing device from an opening at the bottom of the conveying section. The whole stabilizer adding device is simple in structure, accurate in adding and convenient to control manually or automatically.
Preferably, the ultrafiltration membrane device is an internal pressure type hollow fiber ultrafiltration membrane device, a hollow ultrafiltration membrane wire is arranged in the device, and a plurality of central tubes inserted in the hollow ultrafiltration membrane wire are utilized to improve the separation efficiency. In other embodiments, the ultrafiltration membrane apparatus comprises one or more of an internal pressure type ultrafiltration membrane apparatus, an external pressure type ultrafiltration membrane apparatus, and an immersion type ultrafiltration membrane apparatus; the ultrafiltration membrane of the ultrafiltration membrane device comprises one or more of a hollow fiber organic ultrafiltration membrane, a flat plate organic ultrafiltration membrane, a tubular organic ultrafiltration membrane, a flat plate inorganic ceramic membrane and a tubular inorganic ceramic membrane; the present embodiment is not limited.
Preferably, the nanofiltration membrane device is a tubular nanofiltration membrane device, as described in the chinese utility model patent publication No. CN 208824285U. In other embodiments, the nanofiltration membrane device comprises one or more of a plate-type nanofiltration membrane device, a tubular nanofiltration membrane device and a roll-type nanofiltration membrane device, and the nanofiltration membrane of the nanofiltration membrane device is one or more of a hollow fiber nanofiltration membrane, a cellulose acetate nanofiltration membrane, an aromatic polyamide nanofiltration membrane, a sulfonated polyether sulfone nanofiltration membrane, a ceramic nanofiltration membrane, a metal nanofiltration membrane and a molecular sieve nanofiltration membrane; is limited to the present embodiment.
Preferably, the reverse osmosis membrane device is a tubular reverse osmosis membrane device, and the specific structure can be found in the patent with the publication number of CN 208878292U. Preferably, the reverse osmosis membrane of the reverse osmosis membrane device is a hollow fiber reverse osmosis membrane. In other embodiments, the reverse osmosis membrane unit comprises one or more of a roll-to-roll reverse osmosis membrane unit, a plate and frame reverse osmosis membrane unit, a tubular reverse osmosis membrane unit; the present embodiment is not limited.
Preferably, the dryer is a hot air dryer. In other embodiments, the dryer is one or more of a vacuum dryer, a cryogenic dryer, a freeze vacuum dryer, a hot air dryer, and a thermal evaporation dryer.
Preferably, one or more of the ultrafiltration water inlet pump 6, the nanofiltration water inlet pump 7, the reverse osmosis water inlet pump 9, the nanofiltration water outlet pump 8, the reverse osmosis water outlet pump 10 and the dryer water inlet pump 11 are variable frequency pumps, so that the working power of the corresponding pumps can be changed as required to adapt to the concentration of the landfill leachate with different solid contents, and the successful concentration and filtration of the landfill leachate with different solid contents can be ensured.
The multistage enrichment facility of landfill leachate that this embodiment provided, its theory of operation is as follows:
1) and adding a stabilizer into the mixing device 1, wherein the stabilizer comprises one or more of polyaluminium chloride, polyaluminium sulfate, polyferric chloride, polyferric sulfate, cationic polyacrylamide, anionic polyacrylamide, nonionic polyacrylamide, sulfuric acid, nitric acid and hydrochloric acid.
2) The garbage leachate is stirred by one or more of mechanical stirring, aeration stirring and water inlet pump mixing stirring of the mixing device 1, and then enters the ultrafiltration membrane device 2 through the ultrafiltration water inlet pump 6. Under the positive pressure or negative pressure action of the ultrafiltration water inlet pump 6 or the nanofiltration water inlet pump 7, the leachate passes through the ultrafiltration membrane device 2 and enters the nanofiltration membrane device 3. During the process, the particle pollutants are intercepted on the surface of the ultrafiltration membrane 2, and the pollutants on the surface of the membrane are discharged out of the ultrafiltration membrane device 2 in a sludge discharge mode through regular back washing and sludge discharge, so that the separation of liquid and particles is realized.
3) After the ultrafiltration effluent enters the nanofiltration membrane device 3, under the positive pressure action of the nanofiltration water inlet pump 7, liquid with the mass fraction of about 75% in the ultrafiltration effluent penetrates the nanofiltration membrane device 3 to form standard-reaching clear liquid, and the clear liquid is discharged out through the nanofiltration water outlet pump 8. High-valence metal ions such as calcium, magnesium, zinc and the like and most organic matters are intercepted in front of the membrane by the nanofiltration membrane device 3 and transferred to the residual 25 percent of liquid which does not penetrate through the nanofiltration membrane to form nanofiltration membrane concentrated solution.
4) The nanofiltration membrane concentrated solution enters a reverse osmosis membrane device 4 through a reverse osmosis water inlet pump 9, under the pressure action of the reverse osmosis water inlet pump 9, about 50-70% of liquid in the nanofiltration membrane concentrated solution permeates the reverse osmosis membrane device 4 to form standard clear solution, and the standard clear solution is discharged through a reverse osmosis water outlet pump 10. After being treated by the reverse osmosis membrane device 4, the concentration of the pollutants in the nanofiltration membrane concentrated solution is increased to form reverse osmosis concentrated solution.
5) And (3) the reverse osmosis concentrated solution enters a dryer 5 through a dryer water inlet pump 11, and is subjected to one or more of vacuum drying, low-temperature drying, freezing vacuum drying, hot air drying and thermal evaporation drying to form organic matter residues and inorganic salt-containing residues with the water content of less than 20%, and is subjected to partition landfill treatment. In the drying process, the liquid in the reverse osmosis concentrated solution is discharged in the form of moisture.
Because the contents of refractory organic matters and salt in the landfill leachate are high, particularly in a landfill site for recharging concentrated solution, the conductivity of the landfill leachate can reach 39000US/cm, the salt content reaches 1-3%, the COD can reach more than 15000mg/L, most of the landfill leachate is refractory organic matters, and the biochemical efficiency is low. The existing method for directly filtering the stock solution of landfill leachate by a butterfly reverse osmosis (DTRO) process can cause the problems of easy blockage of a reverse osmosis membrane, complex operation management, short membrane service life, high operation cost and the like. The direct evaporation (MVC process) and the ion exchange (DI) process easily cause the organic matters in the landfill leachate to be converted into VOC, so that secondary pollution is generated; and the operation cost of direct evaporation is high, and the finally formed solid is easy to separate out and cause secondary pollution after being re-buried because the finally formed solid does not have a stabilizing process.
The multistage enrichment facility of landfill leachate that this embodiment provided carries out stabilization treatment through carrying out landfill leachate, avoids the precipitation of organic matter. The particulate matter impurities in the landfill leachate stock solution are removed through ultrafiltration, and the membrane pollution of subsequent nanofiltration and reverse osmosis is reduced, so that the operation and management cost is reduced. Finally, the reverse osmosis concentrated solution is subjected to evaporation treatment to form stable solid organic waste residue and inorganic salt-containing waste residue, so that the stable full treatment of the landfill leachate is realized. The utility model discloses both can newly increase complete sets and handle landfill leachate, also can reform transform on current situation landfill leachate processing system.
It will be understood by those skilled in the art from the foregoing description of the structure and principles that the present invention is not limited to the specific embodiments described above, and that modifications and substitutions based on the known art are intended to fall within the scope of the invention, which is defined by the claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.
Claims (10)
1. A multistage concentration device of landfill leachate is characterized by comprising a mixing device, an ultrafiltration membrane device, a nanofiltration membrane device, a reverse osmosis membrane device, a dryer, an ultrafiltration water inlet pump, a nanofiltration water inlet pump, a reverse osmosis water inlet pump, a nanofiltration water pump, a reverse osmosis water outlet pump and a dryer water inlet pump, wherein the mixing device, the ultrafiltration membrane device, the nanofiltration membrane device, the reverse osmosis membrane device and the dryer are sequentially connected through a pipeline, the ultrafiltration water inlet pump is connected between the mixing device and a concentrated solution area of the ultrafiltration membrane device, the nanofiltration water inlet pump is connected between a clear solution area of the ultrafiltration membrane device and a concentrated solution area of the nanofiltration membrane device, the reverse osmosis water inlet pump is connected between the concentrated solution area of the nanofiltration membrane device and the concentrated solution area of the reverse osmosis membrane device, and the dryer water inlet pump is connected between the concentrated solution area of the reverse osmosis membrane device and the dryer, the nanofiltration water pump and the reverse osmosis water outlet pump are respectively connected to the clear liquid outlet of the nanofiltration membrane device and the clear liquid outlet of the reverse osmosis membrane device.
2. The multistage landfill leachate concentrating device according to claim 1, wherein the mixing device comprises an agitator and a stabilizer adding device connected to the agitator.
3. The multistage landfill leachate concentration device according to claim 1, wherein the ultrafiltration membrane device comprises one or more of an internal pressure type ultrafiltration membrane device, an external pressure type ultrafiltration membrane device and an immersed type ultrafiltration membrane device.
4. The multistage concentration device for landfill leachate according to claim 3, wherein the ultrafiltration membrane of the ultrafiltration membrane device comprises one or more of a hollow fiber organic ultrafiltration membrane, a flat organic ultrafiltration membrane, a tubular organic ultrafiltration membrane, a flat inorganic ceramic membrane and a tubular inorganic ceramic membrane.
5. The multistage landfill leachate concentrating device according to claim 1, wherein the nanofiltration membrane device comprises one or more of a plate nanofiltration membrane device, a tubular nanofiltration membrane device, and a rolled nanofiltration membrane device.
6. The multistage landfill leachate concentration device according to claim 5, wherein the nanofiltration membrane of the nanofiltration membrane device comprises one or more of a hollow fiber nanofiltration membrane, a cellulose acetate nanofiltration membrane, an aromatic polyamide nanofiltration membrane, a sulfonated polyether sulfone nanofiltration membrane, a ceramic nanofiltration membrane, a metal nanofiltration membrane and a molecular sieve nanofiltration membrane.
7. The multistage landfill leachate concentration device of claim 1, wherein the reverse osmosis membrane device is a hollow fiber type reverse osmosis membrane device.
8. The multistage landfill leachate concentration device of claim 1, wherein the reverse osmosis membrane device comprises one or more of a roll-type reverse osmosis membrane device, a plate-and-frame type reverse osmosis membrane device, and a tubular reverse osmosis membrane device.
9. The multistage landfill leachate concentrating device of claim 1, wherein the dryer is one or more of a vacuum dryer, a cryogenic dryer, a freeze vacuum dryer, a hot air dryer and a thermal evaporation dryer.
10. The multistage landfill leachate concentration device of claim 1, wherein one or more of the ultrafiltration water inlet pump, the nanofiltration water inlet pump, the reverse osmosis water inlet pump, the nanofiltration water pump, and the reverse osmosis water pump is a variable frequency pump.
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| CN202020489133.0U CN212174700U (en) | 2020-04-07 | 2020-04-07 | Multistage enrichment facility of landfill leachate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115093068A (en) * | 2022-07-27 | 2022-09-23 | 成都硕特科技股份有限公司 | Landfill leachate concentrated solution treatment system containing high-concentration humic acid and treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115093068A (en) * | 2022-07-27 | 2022-09-23 | 成都硕特科技股份有限公司 | Landfill leachate concentrated solution treatment system containing high-concentration humic acid and treatment method |
| CN115093068B (en) * | 2022-07-27 | 2024-04-19 | 成都硕特科技股份有限公司 | Landfill leachate concentrated solution treatment system containing high-concentration humic acid and treatment method |
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