CN112811650A - Handle benzotriazole and contain environmental protection device of salt waste water - Google Patents
Handle benzotriazole and contain environmental protection device of salt waste water Download PDFInfo
- Publication number
- CN112811650A CN112811650A CN202011565065.2A CN202011565065A CN112811650A CN 112811650 A CN112811650 A CN 112811650A CN 202011565065 A CN202011565065 A CN 202011565065A CN 112811650 A CN112811650 A CN 112811650A
- Authority
- CN
- China
- Prior art keywords
- environment
- treatment box
- rod
- containing wastewater
- fixedly mounted
- 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.)
- Pending
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 32
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 title claims description 13
- 239000012964 benzotriazole Substances 0.000 title claims description 13
- 150000003839 salts Chemical class 0.000 title claims description 11
- 230000007613 environmental effect Effects 0.000 title description 5
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 125000003354 benzotriazolyl group Chemical class N1N=NC2=C1C=CC=C2* 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F2101/10—Inorganic compounds
-
- 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
- C02F2101/38—Organic compounds containing nitrogen
-
- 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention discloses an environment-friendly device for treating benzotriazole salt-containing wastewater, which comprises a base, wherein two symmetrical upright posts are fixedly arranged at the top of the base, and a processing box is fixedly arranged between the tops of the two upright posts, the left side and the right side of the top of the processing box are respectively provided with a liquid inlet hopper and a feed hopper, a screen is arranged in the liquid inlet hopper, first bearing seats are fixedly arranged on the front inner wall and the rear inner wall of the treatment box, a rotating rod is rotatably connected between the two first bearing seats, a rotating cylinder is fixedly sleeved on the outer surface of the rotating rod, three groups of stirring rods are radially and equidistantly distributed on the outer surface of the rotary drum, the front end of each rotary rod penetrates through the treatment box and extends to the outside of the treatment box, a sector disc is fixedly sleeved on each rotary rod, a lug is fixedly arranged on the front of each sector disc, and the surface activity of lug articulates there is the push rod, the right-hand member fixedly connected with connecting block of push rod, the equal fixed mounting in upper and lower both sides of connecting block has the slide bar. The invention has compact structure and high treatment efficiency, greatly reduces the pollution to the environment and is more environment-friendly.
Description
Technical Field
The invention relates to the technical field of treatment of benzotriazole salt-containing wastewater, in particular to an environment-friendly device for treating benzotriazole salt-containing wastewater.
Background
Benzotriazole is a common water treatment reagent, can produce a large amount of benzotriazole and contain salt waste water in the benzotriazole production process, if direct discharge not only waste resource but also cause the pollution to the environment, consequently need to discharge behind the benzotriazole contains salt waste water innocent treatment, and traditional treatment facility ubiquitous treatment effeciency is low, handles not enough problem.
The environment-friendly device for treating the benzotriazole salt-containing wastewater is compact in structure and simple to manufacture, the stock solution and the treated solution are filtered, solid waste residues are screened out, and meanwhile, the environment-friendly device for treating the benzotriazole salt-containing wastewater is subjected to harmless treatment by utilizing chemical reaction treatment and processing, so that the environment-friendly device is more environment-friendly
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an environment-friendly device for treating benzotriazole salt-containing wastewater, which solves the problems of treatment efficiency and insufficient treatment.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: an environment-friendly device for treating benzotriazole salt-containing wastewater comprises a base, wherein two symmetrical stand columns are fixedly mounted at the top of the base, a treatment box is fixedly mounted between the tops of the two stand columns, a liquid inlet hopper and a feed hopper are respectively arranged at the left side and the right side of the top of the treatment box, a screen is arranged in the liquid inlet hopper, first bearing seats are fixedly mounted on the front inner wall and the rear inner wall of the treatment box respectively, a rotating rod is rotatably connected between the two first bearing seats, a rotating cylinder is fixedly sleeved on the outer surface of the rotating rod, three groups of stirring rods which are radially distributed at equal intervals are arranged on the outer surface of the rotating cylinder, the front end of the rotating rod penetrates through the treatment box and is fixedly sleeved with a sector disc, a convex block is fixedly mounted on the front surface of the sector disc, a push rod is movably hinged on the outer surface of the convex block, a connecting block is, two symmetrical transverse plates are fixedly arranged on the right side of the treatment box, slide rails are fixedly arranged at the ends, close to each other, of the two transverse plates, the two slide bars are connected with the corresponding slide rails in a sliding manner, a support rod is fixedly arranged at the right end of the connecting block, the right end of the supporting rod is fixedly connected with a strip-shaped block, the bottom of the treatment box is communicated with a liquid discharge pipe, a valve is arranged on the liquid discharge pipe, two symmetrical vertical plates are fixedly arranged on the right side of the upper surface of the base, and one side of each vertical plate close to each other is fixedly provided with a second bearing seat, a screw rod is rotatably connected between the two second bearing seats, the outer surface of the screw rod is movably connected with a screw rod nut, the top of the screw rod nut is fixedly provided with a straight rod, and the top of the straight rod is fixedly connected with the bottom of the strip-shaped block, the right end of the vertical plate is fixedly provided with a motor, and the output end of the motor penetrates through the vertical plate on the right side and is fixedly connected with the right end of the screw rod.
Preferably, the number of the stirring rods in each group is eight, and the eight stirring rods are annularly and equidistantly distributed on the outer surface of the rotary drum.
Preferably, the number of the stirring rods in each group is eight, and the eight stirring rods are annularly and equidistantly distributed on the outer surface of the rotary drum.
Preferably, a gap is reserved between one end of the stirring rod far away from the rotary drum and the inner wall of the treatment box.
Preferably, the slide bar is matched with the slide rail.
Preferably, the horizontal length value of the slide rail is smaller than that of the screw rod.
Preferably, the liquid discharge pipe is in threaded connection with the treatment box, and a sponge block is arranged in the liquid discharge pipe.
Preferably, the screw rod is matched with the screw rod nut.
Preferably, the motor is a forward and reverse rotating motor.
(III) advantageous effects
The invention provides an environment-friendly device for treating benzotriazole salt-containing wastewater, which has the following beneficial effects:
(1) this handle environmental protection device that benzotriazole contains salt waste water, screen cloth and sponge piece are accomplished the screening to impurity from the initial stage that benzotriazole contains salt waste water and the complete back stage of reaction respectively, have not only reduced the degree of difficulty that benzotriazole contains salt waste water treatment, have still reduced the waste residue in the final discharge liquid, environmental protection more.
(2) This handle benzotriazole and contain environmental protection device of salt waste water, the puddler of rotary drum surface carries out abundant mixing stirring to benzotriazole and contains salt waste water and chemical treatment agent between, has improved reaction rate between them greatly, has improved holistic treatment effeciency.
(3) This handle benzotriazole contains environment-friendly device of salt waste water, the cooperation between lead screw, second bearing seat, screw-nut, motor, straight-bar, bar-shaped piece, branch, connecting block, slide bar, slide rail, push rod, lug and the sector disc, the reciprocal rotation of the smooth and easy drive bull stick, more high-efficient.
Drawings
FIG. 1 is a cross-sectional view of a front view of the body of the present invention;
FIG. 2 is a front view of the body of the present invention;
FIG. 3 is a cross-sectional view of the right side of the treatment tank of the present invention.
In the figure: the device comprises a base 1, a vertical column 2, a treatment box 3, a liquid inlet hopper 4, a feed hopper 5, a screen 6, a first bearing seat 7, a rotating rod 8, a rotary cylinder 9, a stirring rod 10, a sector disc 11, a convex block 12, a push rod 13, a connecting block 14, a sliding rod 15, a transverse plate 16, a sliding rail 17, a supporting rod 18, a strip-shaped block 19, a liquid discharge pipe 20, a valve 21, a vertical plate 22, a second bearing seat 23, a screw rod 24, a screw rod nut 25, a straight rod 26 and a motor 27.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: an environment-friendly device for treating benzotriazole salt-containing wastewater comprises a base 1, wherein two symmetrical upright columns 2 are fixedly mounted at the top of the base 1, a treatment box 3 is fixedly mounted between the tops of the two upright columns 2, a liquid inlet hopper 4 and a feed hopper 5 are respectively arranged at the left side and the right side of the top of the treatment box 3, a screen 6 is arranged in the liquid inlet hopper 4, first bearing seats 7 are fixedly mounted on the front inner wall and the rear inner wall of the treatment box 3, a rotating rod 8 is rotatably connected between the two first bearing seats 7, a rotating cylinder 9 is fixedly sleeved on the outer surface of the rotating rod 8, three groups of stirring rods 10 which are radially distributed at equal intervals are arranged on the outer surface of the rotating cylinder 9, the number of each group of stirring rods 10 is eight, the eight stirring rods 10 are annularly distributed at equal intervals on the outer surface of the rotating cylinder 9, a gap is reserved between one end, far away from the, so that the reaction between the benzotriazole salt-containing wastewater in the treatment box 3 and the chemical treatment agent is more sufficient, the front end of the rotating rod 8 penetrates and extends to the outside of the treatment box 3 and is fixedly sleeved with the sector disc 11, the front of the sector disc 11 is fixedly provided with the convex block 12, the outer surface of the convex block 12 is movably hinged with the push rod 13, the right end of the push rod 13 is fixedly connected with the connecting block 14, the upper side and the lower side of the connecting block 14 are both fixedly provided with the slide rods 15, the right side of the treatment box 3 is fixedly provided with two symmetrical transverse plates 16, the ends of the two transverse plates 16, which are close to each other, are both fixedly provided with the slide rails 17, the two slide rods 15 are in sliding connection with the corresponding slide rails 17, the slide rods 15 are matched with the slide rails 17, the slide rods 15 move more stably on the slide rails 17, and the right end of the supporting rod 18 is fixedly connected with a strip-shaped block 19, the bottom of the treatment box 3 is communicated with a liquid discharge pipe 20, the liquid discharge pipe 20 is in threaded connection with the treatment box 3, a sponge block is arranged in the liquid discharge pipe 20, the sponge block is convenient to disassemble, the sponge block further filters impurities in the discharged liquid after chemical reaction treatment, the treatment box is more environment-friendly, a valve 21 is arranged on the liquid discharge pipe 20, two symmetrical vertical plates 22 are fixedly arranged on the right side of the upper surface of the base 1, second bearing seats 23 are fixedly arranged on the mutually close sides of the two vertical plates 22, a lead screw 24 is rotatably connected between the two second bearing seats 23, the horizontal length value of the slide rail 17 is smaller than that of the lead screw 24, a lead screw nut 25 is movably connected to the outer surface of the lead screw 24, the lead screw 24 is matched with the lead screw nut 25, and the lead, the top fixed mounting of screw-nut 25 has straight-bar 26, and the bottom fixed connection of the top of straight-bar 26 and bar piece 19, and the right-hand member fixed mounting of right side riser 22 has motor 27, and motor 27 is just reversing motor 27, can make stable reciprocal left-right movement of screw-nut 25 on lead screw 24, and the output of motor 27 run through the riser 22 on right side and with the right-hand member fixed connection of lead screw 24.
The working principle is as follows: the environment-friendly device for treating benzotriazole salt-containing wastewater is characterized in that a valve 21 is closed, corresponding benzotriazole salt-containing wastewater and a chemical treatment agent are respectively added into a liquid inlet hopper 4 and a feed hopper 5, a screen 6 firstly primarily screens out impurity particles in the benzotriazole salt-containing wastewater, then a motor 27 is started, the motor 27 drives a screw rod 24 to rotate forward and backward between two second bearing seats 23, so that a screw nut 25 moves left and right in a reciprocating manner on the outer surface of the screw rod 24, the screw nut 25 moves left and right to drive a straight rod 26 to move left and right in a reciprocating manner, further, a strip block 19 moves left and right in a reciprocating manner under the matching of two sliding rods 15 and corresponding sliding rails 17, so that the right end of a push rod 13 on the left side of the strip block 19 continuously moves left and right, and a sector disc 11 continuously rotates by matching with a lug 12 movably hinged with the strip block, rotation drive bull stick 8 of sector disc 11 rotates between two first bearing seats 7, and then the rotary drum 9 rotates along with bull stick 8, and then the puddler 10 of rotary drum 9 surface stirs between to the benzotriazole salt-containing waste water and the chemical treatment agent in handling case 3 and mixes for chemical reaction's efficiency closes motor 27 after chemical reaction accomplishes, opens valve 21, discharge after the impurity in the waste water after will handling outside can.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a handle benzotriazole and contain environment-friendly device of salt waste water, includes base (1), its characterized in that: the automatic cleaning device is characterized in that two symmetrical upright columns (2) are fixedly mounted at the top of the base (1), a treatment box (3) is fixedly mounted between the tops of the two upright columns (2), a liquid inlet hopper (4) and a feed hopper (5) are respectively arranged on the left side and the right side of the top of the treatment box (3), a screen (6) is arranged in the liquid inlet hopper (4), first bearing seats (7) are fixedly mounted on the front inner wall and the rear inner wall of the treatment box (3), a rotating rod (8) is rotatably connected between the two first bearing seats (7), a rotating cylinder (9) is sleeved on the outer surface of the rotating rod (8), three groups of stirring rods (10) distributed radially and equidistantly are arranged on the outer surface of the rotating cylinder (9), a fan-shaped disc (11) is fixedly sleeved on the front surface of the fan-shaped disc (11) and extends to the outer part of the treatment box (3), a push rod (13) is movably hinged to the outer surface of the convex block (12), a connecting block (14) is fixedly connected to the right end of the push rod (13), slide rods (15) are fixedly mounted on the upper side and the lower side of the connecting block (14), two symmetrical transverse plates (16) are fixedly mounted on the right side of the treatment box (3), slide rails (17) are fixedly mounted at the ends, close to each other, of the two transverse plates (16), the two slide rods (15) are slidably connected with the corresponding slide rails (17), a support rod (18) is fixedly mounted at the right end of the connecting block (14), a strip-shaped block (19) is fixedly connected to the right end of the support rod (18), a liquid discharge pipe (20) is communicated with the bottom of the treatment box (3), a valve (21) is arranged on the liquid discharge pipe (20), and two symmetrical vertical plates (22) are fixedly mounted on the, and the equal fixed mounting in one side that two riser (22) are close to each other has second bearing seat (23), two rotate between second bearing seat (23) and be connected with lead screw (24), and the surface swing joint of lead screw (24) has screw-nut (25), the top fixed mounting of screw-nut (25) has straight-bar (26), and the top of straight-bar (26) and the bottom fixed connection of strip-shaped piece (19), the right side the right-hand member fixed mounting of riser (22) has motor (27), and the output of motor (27) run through riser (19) on right side and with the right-hand member fixed connection of lead screw (24).
2. The environment-friendly device for treating benzotriazole salt-containing wastewater according to claim 1, which is characterized in that: the number of each group of the stirring rods (10) is eight, and the eight stirring rods (10) are annularly and equidistantly distributed on the outer surface of the rotary drum (9).
3. The environment-friendly device for treating benzotriazole salt-containing wastewater according to claim 1, which is characterized in that: a gap is reserved between one end of the stirring rod (10) far away from the rotary drum (9) and the inner wall of the treatment box (3).
4. The environment-friendly device for treating benzotriazole salt-containing wastewater according to claim 1, which is characterized in that: the sliding rod (15) is matched with the sliding rail (17).
5. The environment-friendly device for treating benzotriazole salt-containing wastewater according to claim 1, which is characterized in that: the horizontal length value of the slide rail (17) is smaller than that of the screw rod (24).
6. The environment-friendly device for treating benzotriazole salt-containing wastewater according to claim 1, which is characterized in that: the liquid discharge pipe (20) is in threaded connection with the treatment box (3), and a sponge block is arranged in the liquid discharge pipe (20).
7. The environment-friendly device for treating benzotriazole salt-containing wastewater according to claim 1, which is characterized in that: the screw rod (24) is matched with the screw rod nut (25).
8. The environment-friendly device for treating benzotriazole salt-containing wastewater according to claim 1, which is characterized in that: the motor (27) is a forward and reverse rotating motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011565065.2A CN112811650A (en) | 2020-12-25 | 2020-12-25 | Handle benzotriazole and contain environmental protection device of salt waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011565065.2A CN112811650A (en) | 2020-12-25 | 2020-12-25 | Handle benzotriazole and contain environmental protection device of salt waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112811650A true CN112811650A (en) | 2021-05-18 |
Family
ID=75853902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011565065.2A Pending CN112811650A (en) | 2020-12-25 | 2020-12-25 | Handle benzotriazole and contain environmental protection device of salt waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112811650A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120006755A1 (en) * | 2008-11-19 | 2012-01-12 | Kurita Water Industries Ltd. | Process for treatment of water containing azole-type anticorrosive for copper |
| CN211198852U (en) * | 2019-10-21 | 2020-08-07 | 唐山美邦家科技有限公司 | Environment-friendly equipment for industrial wastewater treatment |
| CN111762859A (en) * | 2020-07-13 | 2020-10-13 | 刘雯雯 | Chemical industry is waste liquid treatment device for environmental protection |
| CN211712824U (en) * | 2019-12-30 | 2020-10-20 | 江苏英万特生态环境科技有限公司 | Sewage treatment environmental protection equipment that deposits fast |
-
2020
- 2020-12-25 CN CN202011565065.2A patent/CN112811650A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120006755A1 (en) * | 2008-11-19 | 2012-01-12 | Kurita Water Industries Ltd. | Process for treatment of water containing azole-type anticorrosive for copper |
| CN211198852U (en) * | 2019-10-21 | 2020-08-07 | 唐山美邦家科技有限公司 | Environment-friendly equipment for industrial wastewater treatment |
| CN211712824U (en) * | 2019-12-30 | 2020-10-20 | 江苏英万特生态环境科技有限公司 | Sewage treatment environmental protection equipment that deposits fast |
| CN111762859A (en) * | 2020-07-13 | 2020-10-13 | 刘雯雯 | Chemical industry is waste liquid treatment device for environmental protection |
Non-Patent Citations (1)
| Title |
|---|
| 国家环保局 编: "《纺织工业废水治理》", 31 July 1990, 中国环境科学出版社 * |
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Application publication date: 20210518 |