CN114790058B - Discharge treatment process and treatment device for refined terephthalic acid refined wastewater - Google Patents
Discharge treatment process and treatment device for refined terephthalic acid refined wastewater Download PDFInfo
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- CN114790058B CN114790058B CN202110095507.XA CN202110095507A CN114790058B CN 114790058 B CN114790058 B CN 114790058B CN 202110095507 A CN202110095507 A CN 202110095507A CN 114790058 B CN114790058 B CN 114790058B
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- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 239000002351 wastewater Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title abstract description 36
- 230000008569 process Effects 0.000 title abstract description 30
- 208000028659 discharge Diseases 0.000 title abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 33
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 22
- 238000013519 translation Methods 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 18
- 238000007872 degassing Methods 0.000 abstract description 18
- 238000004064 recycling Methods 0.000 abstract description 18
- 238000001223 reverse osmosis Methods 0.000 abstract description 17
- 238000001704 evaporation Methods 0.000 abstract description 15
- 230000008020 evaporation Effects 0.000 abstract description 15
- 238000007670 refining Methods 0.000 abstract description 12
- 239000002918 waste heat Substances 0.000 abstract description 11
- 230000001105 regulatory effect Effects 0.000 abstract description 10
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical group [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 abstract description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 9
- 239000001569 carbon dioxide Substances 0.000 abstract description 9
- 239000003456 ion exchange resin Substances 0.000 abstract description 9
- 229920003303 ion-exchange polymer Polymers 0.000 abstract description 9
- 229910001415 sodium ion Inorganic materials 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 238000002425 crystallisation Methods 0.000 abstract description 7
- 230000008025 crystallization Effects 0.000 abstract description 7
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract description 6
- 229910017052 cobalt Inorganic materials 0.000 abstract description 6
- 239000010941 cobalt Substances 0.000 abstract description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052748 manganese Inorganic materials 0.000 abstract description 6
- 239000011572 manganese Substances 0.000 abstract description 6
- 229910021645 metal ion Inorganic materials 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 description 33
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 32
- 239000007788 liquid Substances 0.000 description 30
- 239000002245 particle Substances 0.000 description 19
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 19
- 229910010271 silicon carbide Inorganic materials 0.000 description 19
- 239000002910 solid waste Substances 0.000 description 18
- 239000002253 acid Substances 0.000 description 17
- 238000001179 sorption measurement Methods 0.000 description 17
- 239000012528 membrane Substances 0.000 description 12
- 238000001514 detection method Methods 0.000 description 9
- 239000007787 solid Substances 0.000 description 9
- 229910001429 cobalt ion Inorganic materials 0.000 description 8
- MZZUATUOLXMCEY-UHFFFAOYSA-N cobalt manganese Chemical compound [Mn].[Co] MZZUATUOLXMCEY-UHFFFAOYSA-N 0.000 description 8
- 238000001914 filtration Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 239000013505 freshwater Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 239000002002 slurry Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 238000005374 membrane filtration Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/22—Treatment of water, waste water, or sewage by freezing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
Abstract
The invention relates to the technical field of wastewater treatment accessory devices, in particular to a refined terephthalic acid refined wastewater discharge treatment process and a treatment device thereof, which are beneficial to realizing zero discharge of wastewater; the discharge treatment process of the purified terephthalic acid wastewater comprises the steps of collecting tail water after recycling the PTA purified wastewater as wastewater; the waste water passes through sodium ion exchange resin to remove residual cobalt and manganese and other metal ions; degassing the wastewater to remove dissolved carbon dioxide in the wastewater; regulating the pH value of the wastewater to 10-11; the wastewater enters a high-pressure reverse osmosis system for high-power concentration; and recovering the waste heat of the refining process section to perform evaporation crystallization on the concentrated solution. The treatment device comprises a carbon remover body, wherein the top of the carbon remover body is provided with an air outlet, the left side of the carbon remover body is provided with an air inlet, the right side of the carbon remover body is provided with a water inlet, and the bottom of the carbon remover body is provided with a water outlet pipe; the device also comprises an elbow, a first threaded rod, two groups of guide rods, an adjusting plate and a lifting plate.
Description
Technical Field
The invention relates to the technical field of wastewater treatment accessory devices, in particular to a process and a device for discharging and treating refined wastewater of refined terephthalic acid.
Background
The PTA refining wastewater contains terephthalic acid, PT acid, manganese cobalt ions and a large amount of water, and several process routes for targeted recovery are disclosed at present. However, no way has tail water discharge, and no zero discharge of wastewater is realized.
The carbon remover is equipment for removing free carbon dioxide in water by means of blast degassing, water is introduced from the upper part of the equipment, flows through the surface of a packing layer by a spraying device, and air enters from a lower air opening and reversely passes through the packing layer. Free carbon dioxide in the water rapidly resolves into the air and is discharged from the top. The water treatment process is generally arranged behind the hydrogen ion exchanger and the reverse osmosis equipment, and under the normal preparation condition, the residual carbon dioxide in the water after the carbon remover is used for degassing is not more than 5 mg/liter.
In the prior art, most of the water outlet pipes at the bottom of the carbon remover are vertically installed when leaving factories, when the carbon remover is used, external bent pipes are needed, the space at the bottom of the carbon remover is small, the bent pipes are heavy, a plurality of bolts and nuts are used for fixing, and when the bolts and the nuts are installed, the bent pipes are required to be lifted, so that the bent pipe installation process is inconvenient, and the use is affected.
Disclosure of Invention
To solve the above technical problems, a first technical object of the present invention is to provide a wastewater discharge treatment process for refined terephthalic acid which can effectively realize a zero discharge process,
the second technical aim of the invention is to provide a refined terephthalic acid refined wastewater treatment device which has a simple structure, is convenient for installing the bent pipe at the bottom of the carbon remover, improves the use convenience and is beneficial to realizing zero discharge of wastewater.
The first technical purpose of the invention is realized by the following scheme:
the process for discharging and treating the purified terephthalic acid wastewater is characterized by comprising the following steps of:
(1) Collecting tail water after recycling the PTA refining wastewater as wastewater;
(2) Passing the wastewater through a sodium ion exchange resin to remove residual cobalt and manganese and other metal ions;
(3) Degassing the wastewater to remove dissolved carbon dioxide in the wastewater;
(4) Regulating the pH value of the wastewater to 10-11;
(5) The wastewater enters a high-pressure reverse osmosis system for high-power concentration, the fresh water recovery rate is 85-95%, and the concentration multiple is 8-12 times;
(6) And recovering the waste heat of the refining process section to perform evaporation crystallization on the concentrated solution.
The invention discloses a zero-emission treatment process for residual concentrated water after recycling refined terephthalic acid (PTA) refined wastewater and reverse osmosis recycling desalted water. And (3) after the residual concentrated water is pretreated, high-pressure reverse osmosis is adopted for high-power concentration, the residual concentrated solution is reduced to the minimum, and the obtained pure water is directly recycled. And then utilizing the residual heat of the PTA refining process section to carry out multi-effect evaporation decrement on the residual concentrated solution. And (3) carrying out solid-liquid separation on the obtained slurry, returning clear liquid to the multi-effect evaporation unit, and disposing residues.
Preferably, before the wastewater passes through the sodium ion exchange resin, the method further comprises the steps of cooling PTA mother solid waste liquid to 35-45 ℃, precipitating terephthalic acid into tiny particles, filtering and concentrating by adopting a silicon carbide film, and separating terephthalic acid solid; the water produced by the filtration of the silicon carbide film enters an adsorption unit to adsorb dissolved PT acid.
The invention creatively adopts the silicon carbide film to carry out the resource utilization of the refined terephthalic acid mother solid waste liquid; the special process of the invention endows and strengthens the advantages of silicon carbide membrane filtration, so that the acid resistance and concentration functions of the whole device system are strengthened, the concentrated water reenters the water inlet, and the concentrated water becomes more concentrated, thereby being convenient for the centrifuge to recover phthalic acid particles; meanwhile, concentrating PT acid in the ion state of the water production end, entering water production, and allowing the water production to enter an adsorption device to adsorb the PT acid; PT acid concentration means that the pH value is lower and lower, the lower the pH value is, the more favorable for adsorption and the convenience for recycling the phthalic acid particles at the concentrated water end; thereby forming the combined advantage effect that the PTA mother solid waste liquid is cooled at low temperature and continuously circularly treated so that the pH value of the refined terephthalic acid mother solid waste liquid is lower and lower, and further being beneficial to recycling the phthalic acid particles, thereby forming the synergistic effect of resource utilization integration.
Preferably, the aperture of the silicon carbide film is 0.08-0.12 micrometers, and the flow passage of the silicon carbide film is 5-7mm.
The silicon carbide film is formed by sintering at high temperature by adopting a recrystallization technology, a runner is formed by a porous supporting layer, a transition layer and a microporous layer, the sections of the runner are asymmetrically distributed, the runner is a round hole channel with the diameter of 5-7mm, and the runner is large in aperture, smooth and not easy to pollute. The PTA mother liquor carrying the particles flows in the flow channel at a high speed in a cross-flow manner, so that the pollution and blockage to the membrane holes are reduced.
Preferably, the pore diameter of the silicon carbide film is 0.1 micrometer, and the flow channel of the silicon carbide film is 6mm.
The flow channel is a silicon carbide membrane round hole channel with the diameter of 6mm, and the flow channel has large and smooth aperture and is not easy to pollute; the PTA mother liquor carrying the particles flows in the flow channel at a high speed in a cross way, so that the pollution and blockage to the membrane holes can be reduced.
Preferably, the device adopted in the step (3) wastewater degassing treatment is a carbon remover or a membrane degassing device.
Preferably, the step (4) adjusts the pH of the wastewater to alkaline pH10.5.
Preferably, the step (6) is specifically to make the reverse osmosis concentrated solution enter a multi-effect evaporator for evaporation crystallization; the heat source adopts the waste heat in the PTA refined wastewater, and under the condition of negative pressure, the steam generated by the evaporation is evaporated at low temperature and is condensed by a condenser for recycling; the slurry finally produced by the evaporator is subjected to solid-liquid separation, the clear liquid returns to the front end, and the solid is additionally treated.
The invention relates to a refined terephthalic acid refined wastewater treatment device, which comprises a carbon remover body, wherein the top of the carbon remover body is provided with an air outlet, the left side of the carbon remover body is provided with an air inlet, the right side of the carbon remover body is provided with a water inlet, the bottom of the carbon remover body is provided with a water outlet pipe, the water outlet pipe is communicated with a first flange, and the bottom of the carbon remover body is provided with four groups of supporting legs; still including return bend, first threaded rod, two sets of guide bars, regulating plate and lifter plate, every two sets of landing legs equal fixedly connected with a set of connecting plate, be provided with first bearing on the connecting plate, first threaded rod is connected with two sets of first bearing inner circles, threaded connection has the translation board on the first threaded rod, translation board first half region and latter half region all are provided with horizontal through-hole, every two sets of both ends of guide bar all are connected with two sets of connecting plates respectively, and every set of guide bar all passes a set of through-hole, translation board first half region and latter half region all are provided with fore-and-aft through hole, every set of through-hole department all sliding connection has the slide bar, the first gyro wheel of installation is rotated to the slide bar bottom, be located the connecting plate of left side and be connected with the triangular plate through two sets of transition bars, first gyro wheel is on the triangular plate inclined plane, two sets of slide bar with the lifter plate is connected, set up adjustment mechanism on the lifter plate, the adjustment mechanism output is connected with the regulating plate top is provided with circular arc seat, be provided with on the return bend with first flange complex second flange, place on the return bend.
The invention relates to a refined terephthalic acid refined wastewater treatment device, which comprises a second threaded rod and four groups of telescopic rods, wherein a second bearing is arranged on a lifting plate, the second threaded rod is connected with an inner ring of the second bearing, a threaded pipe fixedly connected with an adjusting plate is connected onto the second threaded rod in a threaded manner, two ends of each group of telescopic rods are respectively connected with the lifting plate and the adjusting plate, a square ring is fixedly connected onto the second threaded rod, and a nut is connected onto the second threaded rod in a threaded manner.
According to the refined terephthalic acid refined wastewater treatment device, the front side and the rear side of the bottom of the lifting plate are respectively provided with the inclined rods, the left end of each inclined rod is rotatably provided with the second roller, and the second rollers are in contact with the translation plate.
According to the refined terephthalic acid refined wastewater treatment device, the hand wheel is arranged at the left end of the first threaded rod.
The invention relates to a refined terephthalic acid refined wastewater treatment device, wherein the end face of a guide rod is circular.
The invention relates to a refined terephthalic acid refined wastewater treatment device, wherein the end face of a sliding rod is circular.
The invention relates to a refined terephthalic acid refined wastewater treatment device, wherein a rubber pad contacted with an elbow is arranged on the inner wall of a circular arc-shaped placing seat.
Compared with the prior art, the invention has the beneficial effects that:
1. the pretreated tail water runs under the high pH working condition, so that the membrane pollution of reverse osmosis is reduced, and the high-power concentration of the tail water is realized; the waste heat of the refining process section is recovered to evaporate and crystallize the concentrated solution, so that the evaporation cost is reduced and the economic benefit of zero emission is improved while the condensed water is recovered; the desalted water recovery can reach more than 90%, and is improved by 20% on the basis of 70% of the prior art;
2. under the support of the connecting plate and the first bearing, the first threaded rod can rotate, and the translation plate cannot rotate under the action of the two groups of guide rods, so that the translation plate can transversely displace by rotating the first threaded rod, and the sliding rod is in sliding connection with the translation plate, so that when the first roller moves to the triangular plate, the lifting plate, the sliding rod, the bent pipe and the like are subjected to height change, the bent pipe is placed on the circular arc-shaped placing seat, the position and the angle of the bent pipe are manually adjusted, the height of the bent pipe is adjusted through the adjusting mechanism, then the first threaded rod is rotated to enable the bent pipe and the like to move leftwards, and in the moving process, the second flange on the bent pipe is in butt joint with the first flange, and then fastening is performed;
3. the invention creatively adopts the silicon carbide film to carry out the resource utilization of the refined terephthalic acid mother solid waste liquid; the special process of the invention endows and strengthens the advantages of silicon carbide membrane filtration, so that the acid resistance and concentration functions of the whole device system are strengthened, the concentrated water reenters the water inlet, and the concentrated water becomes more concentrated, thereby being convenient for the centrifuge to recover phthalic acid particles; meanwhile, concentrating PT acid in the ion state of the water production end, entering water production, and allowing the water production to enter an adsorption device to adsorb the PT acid; PT acid concentration means that the pH value is lower and lower, the lower the pH value is, the more favorable for adsorption and the convenience for recycling the phthalic acid particles at the concentrated water end; thereby forming the combined advantage effect that the PTA mother solid waste liquid is cooled at low temperature and continuously circularly treated so that the pH value of the refined terephthalic acid mother solid waste liquid is lower and lower, and further being beneficial to recycling the phthalic acid particles, thereby forming the synergistic effect of resource utilization integration.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a partial enlarged view of a portion a in fig. 1;
FIG. 3 is a bottom perspective view of the first threaded rod, guide bar, lifter plate, connecting plate, slide bar, diagonal bar, and second roller;
FIG. 4 is a top perspective view of the first threaded rod, guide bar, lifter plate, connecting plate, slide bar, diagonal bar, and second roller;
FIG. 5 is a side view of the circular arc shaped placement base and rubber pad;
the reference numerals in the drawings: 1. a carbon remover body; 2. a water outlet pipe; 3. a first flange; 4. a support leg; 5. bending the pipe; 6. a first threaded rod; 7. a guide rod; 8. an adjusting plate; 9. a lifting plate; 10. a connecting plate; 11. a translation plate; 12. a slide bar; 13. a first roller; 14. a transition rod; 15. a triangle; 16. arc-shaped placing seats; 17. a second flange; 18. a second threaded rod; 19. a telescopic rod; 20. a threaded tube; 21. a square ring; 22. a nut; 23. a diagonal rod; 24. a second roller; 25. a hand wheel; 26. and a rubber pad.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
The process for discharging and treating the refined terephthalic acid wastewater comprises the following steps:
(1) Collecting tail water after recycling the PTA refining wastewater as wastewater;
(2) Passing the wastewater through a sodium ion exchange resin to remove residual cobalt and manganese and other metal ions;
(3) The method comprises the steps of degassing wastewater, wherein a wastewater degassing device is a membrane degassing device for removing dissolved carbon dioxide in the wastewater;
(4) Regulating the pH value of the wastewater to 10-11;
(5) The wastewater enters a high-pressure reverse osmosis system for high-power concentration, the fresh water recovery rate is 85-95%, and the concentration multiple is 8-12 times;
(6) Recovering waste heat of the refining process section to perform evaporation crystallization on the concentrated solution: specifically, the reverse osmosis concentrated solution enters a multi-effect evaporator to be evaporated and crystallized; the heat source adopts the waste heat in the PTA refined wastewater, and under the condition of negative pressure, the steam generated by the evaporation is evaporated at low temperature and is condensed by a condenser for recycling; the slurry finally produced by the evaporator is subjected to solid-liquid separation, the clear liquid returns to the front end, and the solid is additionally treated.
Through detection, the recovery rate of the phthalic acid particles is 95-96wt%, the recovery rate of PT at the adsorption end is 99.68-99.88wt%, and the recovery rate of manganese cobalt ions in the mother solid waste liquid is 97.5-98.5wt%.
Example 2
The process for discharging and treating the refined terephthalic acid wastewater comprises the following steps:
(1) Collecting tail water after recycling the PTA refining wastewater as wastewater;
(2) Passing the wastewater through a sodium ion exchange resin to remove residual cobalt and manganese and other metal ions;
(3) The method comprises the steps of degassing wastewater, wherein a wastewater degassing device is a membrane degassing device for removing dissolved carbon dioxide in the wastewater;
(4) Regulating the pH value of the wastewater to 10-11;
(5) The wastewater enters a high-pressure reverse osmosis system for high-power concentration, the fresh water recovery rate is 85-95%, and the concentration multiple is 8-12 times;
(6) Recovering waste heat of the refining process section to perform evaporation crystallization on the concentrated solution: specifically, the reverse osmosis concentrated solution enters a multi-effect evaporator to be evaporated and crystallized; the heat source adopts the waste heat in the PTA refined wastewater, and under the condition of negative pressure, the steam generated by the evaporation is evaporated at low temperature and is condensed by a condenser for recycling; the slurry finally produced by the evaporator is subjected to solid-liquid separation, the clear liquid returns to the front end, and the solid is additionally treated.
Through detection, the recovery rate of the phthalic acid particles is 96-97wt%, the recovery rate of PT at the adsorption end is 99.89-99.95wt%, and the recovery rate of manganese cobalt ions in the mother solid waste liquid is 97.9-98.9wt%.
Example 3
The process for discharging and treating the refined terephthalic acid wastewater comprises the following steps:
(1) Collecting tail water after recycling the PTA refining wastewater as wastewater;
(2) Passing the wastewater through a sodium ion exchange resin to remove residual cobalt and manganese and other metal ions;
(3) The method comprises the steps of degassing wastewater, wherein a wastewater degassing device is a membrane degassing device for removing dissolved carbon dioxide in the wastewater;
(4) Regulating the pH value of the wastewater to 10-11;
(5) The wastewater enters a high-pressure reverse osmosis system for high-power concentration, the fresh water recovery rate is 85-95%, and the concentration multiple is 8-12 times;
(6) Recovering waste heat of the refining process section to perform evaporation crystallization on the concentrated solution: specifically, the reverse osmosis concentrated solution enters a multi-effect evaporator to be evaporated and crystallized; the heat source adopts the waste heat in the PTA refined wastewater, and under the condition of negative pressure, the steam generated by the evaporation is evaporated at low temperature and is condensed by a condenser for recycling; the slurry finally produced by the evaporator is subjected to solid-liquid separation, the clear liquid returns to the front end, and the solid is additionally treated.
Through detection, the recovery rate of the phthalic acid particles is 95-97wt%, the recovery rate of PT at the adsorption end is 99.91-99.93wt%, and the recovery rate of manganese cobalt ions in the mother solid waste liquid is 98.8-99.3wt%.
Example 4
The difference from example 1 is that the wastewater degassing treatment device in the step (3) is a carbon remover.
Step (4) adjusting the pH of the wastewater to alkaline pH10.5; and (3) the wastewater in the step (5) enters a high-pressure reverse osmosis system for high-power concentration, the fresh water recovery rate is 90%, and the concentration multiple is 10.
As shown in fig. 1 to 5, the refined terephthalic acid refined wastewater treatment device comprises a carbon remover body 1, wherein an air outlet is formed in the top of the carbon remover body 1, an air inlet is formed in the left side of the carbon remover body 1, a water inlet is formed in the right side of the carbon remover body 1, a water outlet pipe 2 is formed in the bottom of the carbon remover body 1, a first flange 3 is communicated with the water outlet pipe 2, and four groups of supporting legs 4 are arranged at the bottom of the carbon remover body 1; the utility model also comprises an elbow pipe 5, a first threaded rod 6, two groups of guide rods 7, an adjusting plate 8 and a lifting plate 9, wherein each two groups of supporting legs 4 are fixedly connected with a group of connecting plates 10, a first bearing is arranged on the connecting plates 10, the first threaded rod 6 is connected with two groups of first bearing inner rings, the first threaded rod 6 is connected with a translation plate 11 in a threaded manner, the front half area and the rear half area of the translation plate 11 are respectively provided with transverse through holes, the two ends of each two groups of guide rods 7 are respectively connected with the two groups of connecting plates 10, each group of guide rods 7 penetrate through one group of through holes, the front half area and the rear half area of the translation plate 11 are respectively provided with longitudinal through holes, each group of through holes are slidably connected with a sliding rod 12, the bottom end of each sliding rod 12 is rotatably provided with a first roller 13, a connecting plate 10 positioned on the left side is connected with a triangular plate 15 through two groups of transition rods 14, the first rollers 13 are positioned on the inclined surfaces of the triangular plates 15, the two groups of sliding rods 12 are connected with a lifting plate 9, an adjusting mechanism is arranged on the lifting plate 9, the output end of the adjusting mechanism is connected with an adjusting plate 8, the top of the adjusting plate 8 is provided with a circular arc-shaped placing seat 16, the bent pipe 5 is provided with a second flange 17 matched with the first flange 3, and the bent pipe 5 is placed on the circular arc-shaped placing seat 16; under the support of the connecting plate 10 and the first bearing, the first threaded rod 6 is rotatable, the translation plate 11 cannot rotate under the action of the two groups of guide rods 7, so that the translation plate 11 can transversely displace by rotating the first threaded rod 6, and the sliding rod 12 is in sliding connection with the translation plate 11, so that when the first roller 13 moves to the triangular plate 15, the height of the lifting plate 9, the sliding rod 12, the bent pipe 5 and the like is changed, the bent pipe 5 is placed on the circular arc-shaped placing seat 16 during installation of the bent pipe 5, the position and the angle of the bent pipe 5 are manually adjusted, the height of the bent pipe 5 is adjusted through the adjusting mechanism, then the first threaded rod 6 is rotated to enable the bent pipe 5 and the like to move leftwards, in the moving process, the second flange 17 on the bent pipe 5 is in butt joint with the first flange 3, and then fastening is achieved, compared with the prior art, a user does not need to lift the bent pipe 5, and convenience is improved.
The tail water after recycling recovery of the refined terephthalic acid wastewater is generally concentrated water of first-stage reverse osmosis, firstly, a sodium type cation resin ion exchanger is adopted to deeply remove metal ions such as cobalt and manganese in raw water, then a carbon remover or a membrane degasser is adopted to remove carbon dioxide dissolved in the wastewater, then the pH value is regulated to be 10, the alkaline pH value enters high-pressure reverse osmosis for separation, the fresh water recovery rate is 90%, ten times of concentration is realized, the fresh water is recycled, and the reverse osmosis concentrated solution enters a multi-effect evaporator for evaporation crystallization. The heat source adopts the waste heat in the PTA refined wastewater, the steam generated by the low-temperature evaporation is condensed by a condenser and then recycled under the negative pressure condition, the slurry finally generated by the evaporator is subjected to solid-liquid separation, the clear liquid returns to the front end, and the solid is additionally treated.
The invention relates to a refined terephthalic acid refined wastewater treatment device, which comprises a second threaded rod 18 and four groups of telescopic rods 19, wherein a second bearing is arranged on a lifting plate 9, the second threaded rod 18 is connected with an inner ring of the second bearing, a threaded pipe 20 fixedly connected with an adjusting plate 8 is connected on the second threaded rod 18 in a threaded manner, two ends of each group of telescopic rods 19 are respectively connected with the lifting plate 9 and the adjusting plate 8, a square ring 21 is fixedly connected on the second threaded rod 18, and a nut 22 is connected on the second threaded rod 18 in a threaded manner; the principle of the adjusting mechanism is as follows: the square ring 21 is clamped by using a spanner and rotated to enable the second threaded rod 18 to rotate, so that the height of the adjusting plate 8 is changed under the cooperation of the threaded pipe 20 and the four groups of telescopic rods 19, and the second flange 17 and the first flange 3 can be conveniently abutted by adjusting the height of the adjusting plate 8.
According to the refined terephthalic acid refined wastewater treatment device, the front side and the rear side of the bottom of the lifting plate 9 are respectively provided with the inclined rods 23, the left end of each group of inclined rods 23 is rotatably provided with the second roller 24, and the second roller 24 is in contact with the translation plate 11; when the lifting plate 9 moves, the second roller 24 is driven to roll along the translation plate 11, and the load of the lifting plate 9 is reduced by arranging the second roller 24, so that the lifting plate is prevented from being broken with the sliding rod 12.
According to the refined terephthalic acid refined wastewater treatment device, the left end of the first threaded rod 6 is provided with the hand wheel 25; the hand wheel 25 is held to rotate the first threaded rod 6, so that the first threaded rod 6 is more convenient to bear force, and the use convenience is improved.
According to the device for treating refined terephthalic acid wastewater, the end face of the guide rod 7 is circular; the end face of the guide rod 7 is circular in shape, so that the processing difficulty is reduced.
According to the device for treating refined terephthalic acid wastewater, the end face of the sliding rod 12 is circular; the end face of the sliding rod 12 is circular in shape, so that the processing difficulty is reduced.
According to the refined terephthalic acid refined wastewater treatment device, the inner wall of the circular arc-shaped placing seat 16 is provided with the rubber pad 26 which is contacted with the bent pipe 5; by arranging the rubber pad 26, the friction force between the bent pipe 5 and the rubber pad is increased, and the movement in the moving process is prevented.
The invention relates to a refined terephthalic acid refined wastewater treatment device, which is characterized in that when in operation, the principle of an adjusting mechanism is as follows: the square ring 21 is clamped by using a spanner and rotated to enable the second threaded rod 18 to rotate, so that the height of the adjusting plate 8 is changed under the cooperation of the threaded pipe 20 and the four groups of telescopic rods 19, and the second flange 17 and the first flange 3 can be conveniently abutted by adjusting the height of the adjusting plate 8;
under the support of the connecting plate 10 and the first bearing, the first threaded rod 6 is rotatable, and the translation plate 11 cannot rotate under the action of the two groups of guide rods 7, so that the translation plate 11 can be transversely displaced by rotating the first threaded rod 6, and the first threaded rod 12 is in sliding connection with the translation plate 11, so that when the first roller 13 moves to the triangular plate 15, the lifting plate 9, the sliding rod 12, the elbow 5 and the like are subjected to height change, when the lifting plate 9 moves, the second roller 24 is driven to roll along the translation plate 11, the load of the lifting plate 9 is reduced by arranging the second roller 24, the lifting plate is prevented from being broken with the sliding rod 12, the elbow 5 is placed on the rubber pad 26 on the circular arc-shaped placing seat 16 when the elbow 5 is installed, the position and the angle of the elbow 5 are manually adjusted, the elbow 5 is adjusted through the adjusting mechanism, then the first threaded rod 6 is rotated, the elbow 5 and the like is moved leftwards, and in the moving process, the second flange 17 on the elbow 5 is in butt joint with the first flange 3, and then the elbow 5 is fastened. Through detection, the recovery rate of the phthalic acid particles is 96-98wt%, the recovery rate of PT at the adsorption end is 99.88-99.98wt%, and the recovery rate of manganese cobalt ions in the mother solid waste liquid is 99.4-99.5wt%.
Example 5
The same as in example 1, except that the waste water was cooled to 35 ℃ before passing through the sodium ion exchange resin, terephthalic acid was precipitated as fine particles, and the terephthalic acid solid was separated by filtration concentration using a silicon carbide membrane; the water produced by the filtration of the silicon carbide film enters an adsorption unit to adsorb dissolved PT acid. Through detection, the recovery rate of the phthalic acid particles is 97-99wt%, the recovery rate of PT at the adsorption end is 99.95-99.98wt%, and the recovery rate of manganese cobalt ions in the mother solid waste liquid is 99.4-99.5wt%.
Example 6
The same as in example 2, except that the waste water was cooled to 45 ℃ before passing through the sodium ion exchange resin, terephthalic acid was precipitated as fine particles, and the terephthalic acid solid was separated by filtration concentration using a silicon carbide membrane; the water produced by the filtration of the silicon carbide film enters an adsorption unit to adsorb dissolved PT acid.
Through detection, the recovery rate of the phthalic acid particles is 98-99wt%, the recovery rate of PT at the adsorption end is 99.97-99.99wt%, and the recovery rate of manganese cobalt ions in the mother solid waste liquid is 99.5-99.7wt%.
Example 7
The same as in example 3, except that the waste water was cooled to 40 ℃ before passing through the sodium ion exchange resin, terephthalic acid was precipitated as fine particles, and the terephthalic acid solid was separated by filtration concentration using a silicon carbide membrane; the water produced by the filtration of the silicon carbide film enters an adsorption unit to adsorb dissolved PT acid.
Through detection, the recovery rate of the phthalic acid particles is 97-99wt%, the recovery rate of PT at the adsorption end is 99.97-99.99wt%, and the recovery rate of manganese cobalt ions in the mother solid waste liquid is 99.8-99.9wt%.
Comparative example 1
The difference from example 1 is that step (3) was not subjected to wastewater degassing treatment; and (4) regulating the pH value of the wastewater to 9. Through detection, the recovery rate of each active ingredient in the mother solid waste liquid is 80-85wt%.
Comparative example 2
The difference from example 2 is that step (3) was not subjected to wastewater degassing treatment; and (4) regulating the pH of the wastewater to 12. The detection shows that the recovery rate of each active ingredient in the mother solid waste liquid is 81-86wt%.
From the examples and comparative examples data, it can be seen that:
the emission treatment process of the purified terephthalic acid wastewater can realize zero emission in treatment steps and parameters; without the steps or parameters therein, it would be difficult to achieve zero emissions;
the refined terephthalic acid refined wastewater treatment device can better realize zero emission and has higher recovery rate;
3. the special device and the technology of the invention endow and strengthen the advantages of silicon carbide membrane filtration, so that the acid resistance and the concentration function of the whole device system are enhanced, the concentrated water reenters the water inlet, and the concentrated water becomes more concentrated, thereby being convenient for the centrifuge to recover the phthalic acid particles; meanwhile, concentrating PT acid in an ionic state, entering a water production end to produce water, and entering an adsorption device to adsorb the PT acid; PT acid concentration means that the pH value is lower and lower, the lower the pH value is, the more favorable for adsorption and the convenience for recycling the phthalic acid particles at the concentrated water end; thereby forming the combined advantage effect that the PTA mother solid waste liquid is cooled at low temperature and continuously circularly treated so that the pH value of the refined terephthalic acid mother solid waste liquid is lower and lower, and further being beneficial to recycling the phthalic acid particles, thereby forming the synergistic effect of resource utilization integration.
The installation mode, the connection mode or the setting mode of all the components are welding, riveting or other common mechanical modes, wherein sliding/rotating fixation means that the components do not fall off in a sliding/rotating state, sealing communication means that the two connecting pieces are communicated and sealed at the same time, the specific structure, the model and the coefficient indexes of all the components are all self-contained technologies, so long as the beneficial effects of the components can be achieved, all the electric modules and the electric appliances are common electric devices in the market, the electric devices can be used only by mutually and electrically connecting according to the using specifications purchased together when the electric devices are purchased, and the control module is a common self-contained module, so the electric devices are not repeated herein.
In the present invention, unless otherwise indicated, the terms "upper, lower, left, right, front, rear, inner, outer, and vertical levels" and the like used in the terms of the wastewater treatment apparatus for purifying terephthalic acid are merely terms indicating the orientation of the terms in a normal use state or are commonly understood by those skilled in the art to be used as terms of the wastewater treatment apparatus, and at the same time, the terms of the terms "first", "second", and "third" are not to be construed as limiting the terms, but are merely used for distinguishing the terms of the wastewater treatment apparatus from the first, second, and third, and are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (3)
1. The refined terephthalic acid wastewater treatment device is characterized by comprising a carbon remover body (1), wherein an air outlet is formed in the top of the carbon remover body (1), an air inlet is formed in the left side of the carbon remover body (1), a water inlet is formed in the right side of the carbon remover body (1), a water outlet pipe (2) is arranged at the bottom of the carbon remover body (1), a first flange (3) is communicated with the water outlet pipe (2), and four groups of supporting legs (4) are arranged at the bottom of the carbon remover body (1); the lifting device further comprises a bent pipe (5), a first threaded rod (6), two groups of guide rods (7), an adjusting plate (8) and a lifting plate (9), wherein each two groups of support legs (4) are fixedly connected with a group of connecting plates (10), a first bearing is arranged on each connecting plate (10), the first threaded rod (6) is connected with two groups of first bearing inner rings, a translation plate (11) is connected to the first threaded rod (6) in a threaded manner, transverse through holes are formed in the front half area and the rear half area of the translation plate (11), two ends of each two groups of guide rods (7) are respectively connected with the two groups of connecting plates (10), each group of guide rods (7) penetrates through one group of through holes, the front half area and the rear half area of the translation plate (11) are respectively provided with a longitudinal through hole, each group of through holes are respectively connected with a sliding rod (12), a first roller (13) is rotatably arranged at the bottom end of each sliding rod (12), a connecting plate (10) positioned on the left side is connected with a triangular plate (15) through two groups of transition rods (14), the first roller (13) is positioned on the inclined surface (15), two groups of guide rods (12) are respectively connected with the lifting plate (9) through the lifting plate (8), the lifting plate (8) is arranged at the top of the lifting plate, the lifting plate (8) is connected with the adjusting plate (9), a second flange (17) matched with the first flange (3) is arranged on the bent pipe (5), and the bent pipe (5) is placed on the circular arc-shaped placing seat (16);
the end face shape of the guide rod (7) and the end face shape of the sliding rod (12) are round;
the inner wall of the circular arc-shaped placing seat (16) is provided with a rubber pad (26) which is contacted with the bent pipe (5).
2. The refined terephthalic acid refined wastewater treatment device according to claim 1, wherein the adjusting mechanism comprises a second threaded rod (18) and four groups of telescopic rods (19), the lifting plate (9) is provided with a second bearing, the second threaded rod (18) is connected with an inner ring of the second bearing, a threaded pipe (20) fixedly connected with the adjusting plate (8) is connected to the second threaded rod (18) in a threaded manner, two ends of each group of telescopic rods (19) are respectively connected with the lifting plate (9) and the adjusting plate (8), a square ring (21) is fixedly connected to the second threaded rod (18), and a nut (22) is connected to the second threaded rod (18) in a threaded manner.
3. The device for treating refined terephthalic acid refined wastewater according to claim 2, wherein inclined rods (23) are arranged on the front side and the rear side of the bottom of the lifting plate (9), and a second roller (24) is rotatably arranged at the left end of each inclined rod (23), and the second roller (24) is in contact with the translation plate (11).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417943A (en) * | 2008-12-08 | 2009-04-29 | 中国纺织工业设计院 | Simple method and system for refining mother liquor by high efficiency recovery and utilization of PTA apparatus |
| CN101928089A (en) * | 2009-06-26 | 2010-12-29 | 中国石油化工股份有限公司 | Method for disposing antiosmosis thick water out of purified terephthalic acid refined waste water |
| CN105800846A (en) * | 2014-12-31 | 2016-07-27 | 北京清大国华环境股份有限公司 | Method used for reverse osmosis concentrated water treatment and zero discharge, and apparatus thereof |
| CN108367944A (en) * | 2015-11-13 | 2018-08-03 | 沙特基础工业全球技术有限公司 | The method for being used to handle the waste water of the Production of Terephthalic Acid from purifying using ion exchange resin |
| CN214528229U (en) * | 2021-01-25 | 2021-10-29 | 浙江中凯瑞普环境工程股份有限公司 | Refined effluent treatment plant of pure terephthalic acid |
-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417943A (en) * | 2008-12-08 | 2009-04-29 | 中国纺织工业设计院 | Simple method and system for refining mother liquor by high efficiency recovery and utilization of PTA apparatus |
| CN101928089A (en) * | 2009-06-26 | 2010-12-29 | 中国石油化工股份有限公司 | Method for disposing antiosmosis thick water out of purified terephthalic acid refined waste water |
| CN105800846A (en) * | 2014-12-31 | 2016-07-27 | 北京清大国华环境股份有限公司 | Method used for reverse osmosis concentrated water treatment and zero discharge, and apparatus thereof |
| CN108367944A (en) * | 2015-11-13 | 2018-08-03 | 沙特基础工业全球技术有限公司 | The method for being used to handle the waste water of the Production of Terephthalic Acid from purifying using ion exchange resin |
| CN214528229U (en) * | 2021-01-25 | 2021-10-29 | 浙江中凯瑞普环境工程股份有限公司 | Refined effluent treatment plant of pure terephthalic acid |
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