CN215627383U - Graphite effluent disposal system - Google Patents
Graphite effluent disposal system Download PDFInfo
- Publication number
- CN215627383U CN215627383U CN202122204871.3U CN202122204871U CN215627383U CN 215627383 U CN215627383 U CN 215627383U CN 202122204871 U CN202122204871 U CN 202122204871U CN 215627383 U CN215627383 U CN 215627383U
- Authority
- CN
- China
- Prior art keywords
- tank
- graphite
- stirring
- reaction
- treatment system
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a graphite wastewater treatment system which comprises a pretreatment unit, a concentration unit and an evaporation crystallization unit. By means of the arrangement of the inorganic membrane, impurities such as particles, suspended matters and colloids in the wastewater can be effectively removed, and the wastewater treatment efficiency and the removal rate of graphite wastewater impurities are improved; further, an aerator is arranged in the reaction tankAerating the reaction system, thereby not only increasing H in the lime and graphite wastewater+、F‑The collision frequency is equal, the reaction rate and the utilization rate of lime are improved, and heavy metal ions such as Fe and Mn in the waste liquid can be oxidized into insoluble substances, so that the heavy metal ions such as Fe and Mn can be removed conveniently; the graphite wastewater treatment system is short in process flow, small in occupied area and low in operation cost.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, and particularly relates to a graphite wastewater treatment system.
Background
In the production and processing of graphite, mixed acid such as hydrofluoric acid, nitric acid, hydrochloric acid and the like is generally used, and the generated graphite wastewater has the advantages of strong corrosivity, high content of fluoride ions, complex components, high salt content and high harmfulness.
Patent CN201821005427.0 discloses a graphite effluent disposal system, and it is including consecutive one-time sediment device, secondary sedimentation device and multi-stage filtration device, and wherein, once sediment device is including consecutive neutralization reaction tank, pressure filter again, and secondary sedimentation device is including consecutive aeration tank and secondary sedimentation tank again, and multi-stage filtration device is including manganese sand filter and the ultrafiltration filter that links to each other with the secondary sedimentation tank again. Graphite wastewater is introduced into a neutralization reaction tank, lime is added into the neutralization reaction tank to react with the wastewater, then the wastewater after reaction is subjected to filter pressing to remove mud, then medicine is added into filtrate obtained after filter pressing to react so as to flocculate and precipitate suspended matters and colloid, and finally a multi-medium filter and an ultrafiltration unit are carried out to remove the suspended matters and colloid in the filtrate. The method has the advantages of long treatment process, large dosage of medicament and high operation cost.
Disclosure of Invention
The utility model aims to provide a graphite wastewater treatment system which can effectively remove impurities and shorten the treatment flow of graphite wastewater.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model provides a graphite wastewater treatment system which comprises a pretreatment unit, a concentration unit and an evaporative crystallization unit, wherein the pretreatment unit comprises a reaction tank, a membrane filtration tank and a regulating tank, wherein the reaction tank can be used for introducing graphite wastewater and lime, the membrane filtration tank is connected with the reaction tank and is used for filtering the graphite wastewater after reaction, the regulating tank is connected with the membrane filtration tank and can be used for regulating the pH value of filtrate after filtration, and a filtration membrane used in the membrane filtration tank is an inorganic membrane;
the concentration unit comprises a nanofiltration device and a reverse osmosis device, wherein the water inlet end of the nanofiltration device is connected with the regulating tank, and the fresh water outlet end of the nanofiltration device is connected with the reverse osmosis device;
the evaporation crystallization unit comprises a multi-effect evaporation device, and the water inlet end of the multi-effect evaporation device is connected with the concentrated water outlet end of the nanofiltration device.
Preferably, the inorganic film is Al2O3Film, ZrO2Film, TiO2Film, Si3N4Any one of the films, or the inorganic film is Al-containing2O3、ZrO2、TiO2、Si3N4A composite membrane of at least two components.
Further preferably, the inorganic membrane is a tubular inorganic membrane and/or a flat plate type inorganic membrane.
Preferably, an aerator which can be used for introducing gas and aerating is arranged in the reaction tank.
Further preferably, the distance between the aeration end of the aerator and the bottom surface of the reaction tank is 10-20 cm.
Preferably, the lower part of the reaction tank is provided with a feed inlet which is communicated with the reaction tank and can be used for introducing graphite wastewater, the upper part of the reaction tank is provided with a discharge outlet which is communicated with the reaction tank and can discharge reaction liquid after reaction, and the discharge outlet is communicated with the membrane filtration tank.
Preferably, the pretreatment unit further comprises a homogenizing tank capable of stirring and mixing the graphite wastewater, the homogenizing tank is communicated with the reaction tank, a first stirring device capable of stirring the graphite wastewater is installed in the homogenizing tank, the first stirring device comprises a first stirring paddle, a first stirring shaft connected with the first stirring paddle, and a first power source connected with the first stirring shaft and capable of driving the first stirring shaft to rotate, and the first stirring paddle is arranged in the homogenizing tank.
Further preferably, the first stirring shaft penetrates through the homogenizing tank to be connected with the first stirring paddle, and the first power source is arranged outside the homogenizing tank.
Preferably, the membrane filtration tank is provided with a slag discharge port which is communicated with the membrane filtration tank and can be used for discharging sludge, and a liquid discharge port which can be used for discharging filtrate, the slag discharge port is connected with a filter press for filter pressing of sludge, and the liquid discharge port of the filter press is communicated with the homogenizing tank.
Further preferably, the graphite wastewater treatment system further comprises a reuse water tank capable of collecting water, a fresh water outlet on the reverse osmosis device is communicated with the reuse water tank, and a concentrated water outlet on the reverse osmosis device is communicated with the homogenizing tank; an evaporation liquid outlet on the multi-effect evaporation device is communicated with the reuse water tank.
Preferably, install the second agitating unit that can be used for the stirring on the equalizing basin, second agitating unit include the second stirring rake, with the second (mixing) shaft that the second stirring rake is connected, with the second stirring rake is connected and can drives second (mixing) shaft pivoted second power supply, the second stirring rake sets up in the equalizing basin.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
by means of the arrangement of the inorganic membrane, impurities such as particles, suspended matters and colloids in the wastewater can be effectively removed, and the wastewater treatment efficiency and the graphite wastewater impurity removal rate are improved;
furthermore, the reaction system is aerated by installing an aerator in the reaction tank, so that H in the lime and graphite wastewater is increased+、F-The collision frequency is equal, the reaction rate and the utilization rate of lime are improved, and heavy metal ions such as Fe and Mn in the waste liquid can be oxidized into insoluble substances, so that the heavy metal ions such as Fe and Mn can be removed conveniently;
the graphite wastewater treatment system is short in process flow, small in occupied area and low in operation cost.
Drawings
FIG. 1 is a schematic diagram of a graphite wastewater treatment system according to the present invention;
FIG. 2 is a flow diagram of a graphite wastewater treatment system according to the present invention;
wherein, 1, homogenizing pool; 11. a first stirring device; 2. a reaction tank; 21. an aerator; 22. lime dosing machine; 3. a membrane filtration tank; 4. a regulating tank; 41. a second stirring device; 42. a hydrochloric acid dosing machine; 5. a nanofiltration device 6 and a reverse osmosis device; 7. a multi-effect evaporation device; 8. a reuse water tank; 9. and (4) a filter press.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 2, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the embodiments of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the utility model. To simplify the disclosure of embodiments of the utility model, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the utility model. Furthermore, embodiments of the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
The utility model will be further described with reference to examples of embodiments shown in the drawings to which the utility model is attached.
A graphite wastewater treatment system comprises a pretreatment unit, a concentration unit and an evaporation crystallization unit.
The pretreatment unit comprises a homogenizing tank 1, a reaction tank 2, a membrane filtration tank 3 and a regulating tank 4 which are connected in sequence.
The homogenizing tank 1 is provided with a liquid inlet and a liquid outlet which are communicated with the homogenizing tank 1. The inlet can be used for letting in graphite waste water, and the liquid outlet can be used for discharging the graphite waste water after the homogeneity. The homogenizing pool 1 is further provided with a first stirring device 11, and the first stirring device 11 comprises a first stirring paddle, a first stirring shaft and a first power source. The two ends of the first stirring shaft are respectively connected with a first power source and a first stirring paddle, and the first stirring paddle is arranged in the homogenizing tank 1. The first power supply provides pivoted power for first (mixing) shaft, thereby can make first (mixing) shaft rotate along self axial lead and drive first stirring rake and rotate, and then stirs graphite waste water in the homogeneity pond 1 and play the homogeneity effect with graphite waste water, and graphite waste water after the homogeneity is carrying out reaction on next step, and reaction efficiency is higher. Preferably, the first power source is a driving motor. Further, a first power source is arranged outside the homogenizing pool 1, and one end of the first stirring shaft can penetrate through the homogenizing pool 1 and is connected with the first power source. In order to guarantee the homogeneity effect, homogenization pond 1 is preferably the cylinder, and the homogeneity of homogeneity can effectively be improved in the setting of the homogeneity pond 1 of cylinder.
The reaction tank 2 is provided with a feed inlet and a discharge outlet. The feed inlet on the reaction tank 2 can be communicated with the liquid outlet of the homogenizing tank 1 through a pipeline, so that the homogenized graphite wastewater can be introduced into the reaction tank 2. The reaction tank 2 is also connected with a lime dosing machine 22 for adding lime into the reaction tank 2. Through adding lime to reaction tank 2 in, on the one hand can neutralize graphite waste water, get rid of the acid in the graphite waste water, on the other hand can get rid of the fluorinion in the graphite waste water.
In order to increase the reaction effect, an aerator 21 is also installed in the reaction tank 2. By aligning the stones in the reaction tank 2The ink wastewater is subjected to aeration treatment, so that the graphite wastewater can be stirred and mixed, and non-dissolved matters are ensured to be in a suspension state, so that the reaction is facilitated; secondly, the H in the lime and graphite wastewater is increased+、F-The collision frequency is equal, so that the reaction rate and the utilization rate of lime are improved; thirdly, because the graphite wastewater contains heavy metal ions such as Fe, Mn and the like, air enters the graphite wastewater through aeration, and oxygen in the air can oxidize the heavy metal ions such as Fe, Mn and the like to form insoluble substances, so that the heavy metal ions such as Fe, Mn and the like can be conveniently removed, and the removal rate of impurities in the graphite wastewater is improved.
Preferably, the feed inlet is arranged below the main body of the reaction tank 2, the discharge outlet is arranged above the main body of the reaction tank 2, and the distance from the aeration end of the aerator 21 to the bottom surface of the reaction tank 2 is 10-20 cm. Graphite waste water gets into reaction tank 2 from reaction tank 2's bottom, and through the continuous aeration of aerator 21, graphite waste water is in the in-process continuous reaction that rises, and the discharge gate of following the top discharges when graphite waste water after the reaction rises to the top, and the graphite waste water that lets in again is from the bottom through aeration reaction again, so can realize the serialization reaction of graphite waste water.
The reacted reaction liquid is discharged into the membrane filter tank 3 through a discharge hole on the reaction tank 2. The membrane filtering tank 3 is provided with a slag discharge port and a liquid discharge port. The reaction liquid is subjected to solid-liquid separation in the membrane filtration tank 3, small molecular substances such as ions and water are discharged from a liquid discharge port of the membrane filtration tank 3, and impurities such as suspended matters, residues and colloids are formed into sludge and discharged from a slag discharge port. The membrane used in the membrane filtering tank 3 is an inorganic membrane, the inorganic membrane has narrow pore size distribution, high separation efficiency and stable filtering effect, and can effectively remove particles, suspended matters, colloids and the like in the wastewater. The inorganic film may be Al2O3Film, ZrO2Film, TiO2Film, Si3N4In any of the films, the inorganic film may contain Al2O3、ZrO2、TiO2、Si3N4A composite membrane of at least two components. In the present application, both tubular inorganic membranes and/or flat inorganic membranes are suitable.
Further, the slag discharge port is also connected with a filter press 9. The sludge can be further dehydrated by the filter press 9, and the dehydrated sludge is transported outside. The liquid outlet of the filter press 9 is communicated with the liquid inlet of the homogenizing pool 1, and the moisture removed from the sludge returns to the homogenizing pool 1.
The liquid outlet of the membrane filtration tank 3 is connected with the adjusting tank 4. Be connected with hydrochloric acid medicine adding machine 42 on equalizing basin 4, hydrochloric acid medicine adding machine 42 can let in hydrochloric acid to equalizing basin 4 according to actual demand. In order to sufficiently remove impurities in the graphite wastewater, the amount of lime added in the reaction stage is slightly excessive, and the pH of the graphite wastewater after the reaction can be adjusted to be neutral by adding hydrochloric acid to the adjusting tank 4, thereby removing the lime in the graphite wastewater after the reaction. In order to fully react, the adjusting tank 4 is further provided with a second stirring device 41, and the second stirring device 41 comprises a second stirring paddle, a second stirring shaft and a second power source. The both ends of second (mixing) shaft are connected with second power supply and second stirring rake respectively, and the second stirring rake sets up in equalizing basin 4. The installation manner of the second stirring device 41 may be the same as that of the first stirring device 11, and is not repeated herein. And medicaments such as scale inhibitors, bactericides and the like can also be added into the regulating tank 4 according to actual requirements.
The concentration unit comprises a nanofiltration device 5 and a reverse osmosis device 6.
The nanofiltration device 5 may be a single-stage nanofiltration device or a multi-stage nanofiltration device. Preferably, the nanofiltration device 5 is a two-stage nanofiltration device. The wastewater is concentrated by the nanofiltration device 5 to ensure that the salt content of the wastewater reaches more than 100000mg/L, thereby facilitating the next step of efficient and rapid evaporation and crystallization. The fresh water outlet of the nanofiltration device 5 is connected with the reverse osmosis device 6, and the desalted water can be reused after further desalting by the reverse osmosis device 6.
The reverse osmosis unit 6 may be a primary reverse osmosis unit or a secondary reverse osmosis unit. Preferably, the reverse osmosis unit 6 is a two-stage reverse osmosis unit. The concentrated water outlet on the reverse osmosis device 6 is connected with the feed inlet of the homogenizing pool 1, and the desalted water discharged from the fresh water outlet on the reverse osmosis device 6 can be reused.
The evaporative crystallization unit comprises a multi-effect evaporation device 7, a concentrated water outlet on the nanofiltration device 5 is connected with the multi-effect evaporation device 7, and the salt-containing concentrated water can be evaporated and crystallized through the multi-effect evaporation device 7 to obtain a mixed salt product of calcium chloride and calcium nitrate.
The application also sets up reuse water tank 8, and reuse water tank 8 is connected with the fresh water export of reverse osmosis unit 6, the evaporate outlet of multiple-effect evaporation plant 7 respectively for collect the water after the processing.
The nanofiltration device 5, the reverse osmosis device 6 and the multi-effect evaporation device 7 are all commercially available devices.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A graphite effluent disposal system which characterized in that: the graphite wastewater treatment system comprises a pretreatment unit, a concentration unit and an evaporation crystallization unit, wherein the pretreatment unit comprises a reaction tank (2) which can be used for introducing graphite wastewater and lime, a membrane filtration tank (3) which is connected with the reaction tank (2) and is used for filtering the graphite wastewater after reaction, and a regulating tank (4) which is connected with the membrane filtration tank (3) and is used for regulating the pH value of the filtered filtrate, wherein a filtration membrane used in the membrane filtration tank (3) is an inorganic membrane;
the concentration unit comprises a nanofiltration device (5) and a reverse osmosis device (6), the water inlet end of the nanofiltration device (5) is connected with the regulating tank (4), and the fresh water outlet end of the nanofiltration device (5) is connected with the reverse osmosis device (6);
the evaporation crystallization unit comprises a multi-effect evaporation device (7), and the water inlet end of the multi-effect evaporation device (7) is connected with the concentrated water outlet end of the nanofiltration device (5).
2. The graphite wastewater treatment system of claim 1, which isIs characterized in that: the inorganic film is Al2O3Film, ZrO2Film, TiO2Film, Si3N4Any one of the films, or the inorganic film is Al-containing2O3、ZrO2、TiO2、Si3N4A composite membrane of at least two components.
3. The graphite wastewater treatment system according to claim 1, wherein: the inorganic membrane is a tubular inorganic membrane and/or a flat plate type inorganic membrane.
4. The graphite wastewater treatment system according to claim 1, wherein: an aerator (21) which can be used for introducing gas and aerating is arranged in the reaction tank (2).
5. The graphite wastewater treatment system according to claim 4, wherein: the distance between the aeration end of the aerator (21) and the bottom surface of the reaction tank (2) is 10-20 cm.
6. The graphite wastewater treatment system according to claim 1 or 5, wherein: the lower part of the reaction tank (2) is provided with a feed inlet which is communicated with the reaction tank (2) and can be used for introducing graphite wastewater, the upper part of the reaction tank (2) is provided with a discharge outlet which is communicated with the reaction tank (2) and can discharge reaction liquid after reaction, and the discharge outlet is communicated with the membrane filtration tank (3).
7. The graphite wastewater treatment system according to claim 1, wherein: the pretreatment unit further comprises a homogenizing tank (1) capable of stirring and mixing the graphite wastewater, the homogenizing tank (1) is communicated with the reaction tank (2), a first stirring device (11) capable of stirring the graphite wastewater is installed in the homogenizing tank (1), the first stirring device (11) comprises a first stirring paddle, a first stirring shaft connected with the first stirring paddle, and a first power source connected with the first stirring shaft and capable of driving the first stirring shaft to rotate, and the first stirring paddle is arranged in the homogenizing tank (1).
8. The graphite wastewater treatment system according to claim 7, wherein: the membrane filtration tank (3) is provided with a residue discharge port which is communicated with the membrane filtration tank (3) and can be used for discharging sludge, and a liquid discharge port which can be used for discharging filtrate, the residue discharge port is connected with a filter press (9) which is used for carrying out filter pressing on the sludge, and the liquid discharge port of the filter press (9) is communicated with the homogenizing tank (1).
9. The graphite wastewater treatment system according to claim 7, wherein: the graphite wastewater treatment system also comprises a reuse water tank (8) capable of collecting water, a fresh water outlet on the reverse osmosis device (6) is communicated with the reuse water tank (8), and a concentrated water outlet on the reverse osmosis device (6) is communicated with the homogenizing tank (1); an evaporated liquor outlet on the multi-effect evaporation device (7) is communicated with the reuse water pool (8).
10. The graphite wastewater treatment system according to claim 1, wherein: install second agitating unit (41) that can be used for the stirring on equalizing basin (4), second agitating unit (41) include the second stirring rake, with the second (mixing) shaft that the second stirring rake is connected, with the second (mixing) shaft is connected and can drive second (mixing) shaft pivoted second power supply, the second stirring rake sets up in equalizing basin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122204871.3U CN215627383U (en) | 2021-09-13 | 2021-09-13 | Graphite effluent disposal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122204871.3U CN215627383U (en) | 2021-09-13 | 2021-09-13 | Graphite effluent disposal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215627383U true CN215627383U (en) | 2022-01-25 |
Family
ID=79915299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122204871.3U Active CN215627383U (en) | 2021-09-13 | 2021-09-13 | Graphite effluent disposal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215627383U (en) |
-
2021
- 2021-09-13 CN CN202122204871.3U patent/CN215627383U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101891336B (en) | System and method for leachate treatment in sanitary landfill | |
| CN105461143B (en) | A kind of power plant desulfurization wastewater embrane method concentration technology and equipment | |
| EP3693345B1 (en) | Treatment system for reverse osmosis concentrated water having high permanent hardness | |
| CN101269903B (en) | Further advanced treatment technique and apparatus for sewage water of oil refining | |
| CN105776766A (en) | Advanced treatment system for biorefractory wastewater of industrial park | |
| CN109264939A (en) | The processing method and system of Lithium Battery Industry production waste water | |
| CN108862848A (en) | The treatment process and processing system of pharmacy waste water | |
| CN114133117A (en) | Full-scale treatment system and treatment method for supernatant liquid of sludge dewatering | |
| JP4071364B2 (en) | Pretreatment device for reverse osmosis membrane separator | |
| CN215627383U (en) | Graphite effluent disposal system | |
| CN107540161A (en) | High pure and ultra-fine modified calcium carbonate produces the processing method and processing system of waste water | |
| CN111348812A (en) | Metal surface coating wastewater recycling system | |
| CN215559437U (en) | Wastewater treatment system | |
| CN215559636U (en) | Wastewater treatment system | |
| JPH07241596A (en) | Treatment of waste water | |
| CN207121501U (en) | A kind of hardness removing device suitable for the hard waste water of high magnesium | |
| CN213446615U (en) | Ethylene-vinyl acetate copolymer adhesive wastewater treatment device | |
| CN212669456U (en) | Desulfurization waste water near zero release processing system | |
| CN211141756U (en) | Portable garbage transfer station sewage treatment and recycling system | |
| KR101004067B1 (en) | System for recovering posphate and method for recovering posphate using the same | |
| CN210945112U (en) | Leachate treatment system and pretreatment device for reducing inflow suspended matters and sulfides | |
| CN113880293A (en) | Alkali reduction wastewater treatment method and treatment system | |
| CN209065586U (en) | A kind of waste water circulation treating device producing soda ash based on BDO | |
| JPH07232196A (en) | Advanced treatment of water and its device | |
| CN215161879U (en) | Shale gas produced water treatment facility |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |