CN208087407U - A kind of brominated organic wastewater treating system - Google Patents
A kind of brominated organic wastewater treating system Download PDFInfo
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- CN208087407U CN208087407U CN201721782630.4U CN201721782630U CN208087407U CN 208087407 U CN208087407 U CN 208087407U CN 201721782630 U CN201721782630 U CN 201721782630U CN 208087407 U CN208087407 U CN 208087407U
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- pond
- sludge
- organic wastewater
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- 239000002351 wastewater Substances 0.000 title claims abstract description 71
- 239000010802 sludge Substances 0.000 claims abstract description 74
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 25
- 239000010865 sewage Substances 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 6
- 239000003814 drug Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000010992 reflux Methods 0.000 abstract description 5
- 238000004062 sedimentation Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 description 7
- 239000005416 organic matter Substances 0.000 description 6
- 244000005700 microbiome Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000020477 pH reduction Effects 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The utility model discloses a kind of brominated organic wastewater treating system, a kind of brominated organic wastewater treating system, which is characterized in that including sanitary sewage sump, brominated waste water sump and processing system；The processing system includes the comprehensive adjustment pond being linked in sequence, No. two regulating reservoirs, anaerobic pond, a heavy pond, contact-oxidation pool, secondary settling tank, the ponds MBR, ozone-biological carbon reaction tower, outer row pond, outer comb net and sludge concentration tank；This system is equipped with perfect sludge reflux and processing system simultaneously.The utility model uses two-stage regulating reservoir, two-stage anaerobic pond, two-stage sedimentation basin, two-stage contact-oxidation pool, the ponds MBR and ozone-biological carbon advanced treatment apparatus, achievees the purpose that remove hardly degraded organic substance in waste water, ensures brominated organic wastewater qualified discharge.
Description
Technical field
The present invention relates to a kind of technical field of waste water processing, especially a kind of brominated organic wastewater treating system.
Background technology
With the development of China's industrial technology, industrial wastewater discharge total amount is more than 20,000,000,000 tons at present, and industrial wastewater is outstanding
The organic wastewater of its high-concentration hardly-degradable is most difficult to handle, and sewage disposal dynamics is inadequate, and prodigious destruction is caused to environment.
The secondary pollution caused by using a large amount of Chemical treatment heavy metals of present sewage disposal system, treated sewage
There is still a need for a large amount of processing sludge to cause processing cost high afterwards, and cleaning costly using reverse osmosis membrane is difficult.
It will produce a large amount of high concentrated organic wastewaters in the production process of tetrabromobisphenol A, this waste water contains a large amount of difficult to degrade
Organic matter, largely brominated waste water water treatment technology falls behind in China at present, and ageing equipment, treatment effeciency is low, cannot be satisfied country
Or the more stringent new sewage drainage standard that place is formulated, brominated waste water are treated as a urgent problem needed to be solved.
Invention content
To the problem present on, the purpose of this utility model is to provide a kind of brominated organic wastewater treating system, this is
System is equipped with two-stage regulating reservoir, two-stage anaerobic pond, two-stage sedimentation basin, two-stage contact-oxidation pool, the ponds MBR and ozone-biological carbon depth
Processing unit, system, which is additionally provided with perfect sludge reflux and processing system, can remove organic matter difficult to degrade in waste water, ensure to contain
Bromine organic wastewater qualified discharge.
In order to solve the technical problem, the technical solution adopted in the present invention is：A kind of brominated treatment of Organic Wastewater is provided
System, including sanitary sewage sump, brominated waste water sump and processing system；The processing system includes being linked in sequence
Comprehensive adjustment pond, No. two regulating reservoirs, anaerobic pond, a heavy pond, contact-oxidation pool, secondary settling tank, the ponds MBR, ozone-biological carbon reaction
Tower, outer row pond, outer comb net and sludge concentration tank；The brominated organic wastewater treating system further includes back with water inlet line, sludge pipe
Line, gas pipeline and sludge filtrate line, wherein sludge pipeline is connected to anaerobic pond, a heavy pond, contact-oxidation pool, secondary settling tank, MBR
Pond and sludge concentration tank, the sludge pipeline are equipped with sludge airlift pump, and the sludge airlift pump is also connect with gas pipeline；It is described
Gas pipeline is connect with the gas distributing pipeline in contact-oxidation pool, sludge concentration tank and ozone-biological carbon reaction tower respectively by wind turbine；
The sludge concentration tank connects filter press；The sludge filtrate line connection filter press and comprehensive adjustment pond.
Further, ozone-biological carbon reaction tower includes ozone reaction tower and biological carbon reaction tower, the ozone reaction
Tower bottom installation aeration facility, biological carbon reaction tower bottom installation water distributor, middle level to upper layer is sequentially filled cobblestone, particle is lived
Property carbon cultivates active sludge on activated carbon.
Further, sanitary wastewater enters sanitary sewage sump by grid, the sanitary sewage sump with contain
Bromine waste water sump is connected to comprehensive adjustment pond by back with water inlet line and elevator pump.
Further, it is equipped with an extra before the ozone-biological carbon reaction tower and arranges pond, an extra Pai Chi and outer row
Overflow line is installed, an extra arranges pond and is connected to ozone reaction tower by elevator pump between pond.
Further, anaerobic pond, contact-oxidation pool are two or more, waste water by overflow by multiple anaerobic ponds and
Multiple contact-oxidation pools.
Further, anaerobic pond bottom is equipped with water distribution system and elastic filler is installed in agitating device, middle level；The contact
Oxidation pond bottom is equipped with aerating system, middle level is equipped with composite filling；Hollow-fibre membrane is installed, bottom installation exposes in the ponds MBR
Gas system.
Further, sludge air lift pipeline is equipped in a heavy pond, sludge air lift pipeline passes through sludge pipeline and anaerobic pond
Connection, the secondary settling tank is interior to be equipped with sludge air lift pipeline, and sludge air lift pipeline is connected to by sludge pipeline with contact-oxidation pool.
Further, sludge concentration tank is equipped with medicament and case is added.
Further, No. two regulating reservoirs are connected to steam-heating system by heating pipeline.
Further, waste water enters a heavy pond by anaerobic pond by overflow line, and waste water is logical by contact-oxidation pool
It crosses overflow line and enters secondary settling tank, then overflow enters the ponds MBR.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) have higher sewage treating efficiency, anti impulsion load is strong, go to denitrogenate, phosphorus, COD abilities it is strong, difficulty can be solved
The problem for managing brominated organic wastewater qualified discharge, to be conducive to environmental protection；
(2) perfect sludge treating system, does not generate secondary pollution；
(3) be equipped with two-stage outside arrange pond, visual water quality characteristic and change of water quality segment processing, can effectively reduce, control at
This, if waste water directly outer can be arranged through biochemical treatment is up to standard, if not up to standard can into ozone-biological carbon device progress advanced treating
Ensure that brominated organic wastewater is up to standard；
(4) this system water outlet is discharged using hollow-fibre membrane, can effectively prevent sludge loss, ensures stable water outlet.
Description of the drawings
Fig. 1 show the utility model and provides a kind of structural schematic diagram of brominated organic wastewater treating system.
Figure number and title：
1 is sanitary wastewater, and 2 be grid, and 3 be sewage collecting well of living, and 4 be brominated waste water sump, and 5 be comprehensive adjustment
Pond, 6 be No. two regulating reservoirs, and 7 be anaerobic pond, and 8 be No. two anaerobic ponds, and 9 be a heavy pond, and 10 be contact-oxidation pool, and 11 connect for No. two
Oxidation pond is touched, 12 be secondary settling tank, and 13 be the ponds MBR, and 14 arrange pond for an extra, and 15 be ozone-biological carbon reaction tower, and 16 be outer row
Pond, 17 be outer comb net, and 18 be sludge concentration tank, and 19 be filter press, and 20 be mud cake processing unit, and 21 are added case for medicament, 22
It is wind turbine for steam-heating system, 23,24 be back with water inlet line, and 27 be sludge pipeline, and 28 pump for sewage sludge gas, and 29 be steam pipe
Line, 30 be gas pipeline, and 31 be ozone reaction tower, and 32 be biological carbon reaction tower, and 33 be sludge filtrate line
Specific implementation mode
To keep the purpose, technical scheme and advantage of the utility model embodiment clearer, with reference to the utility model
Attached drawing in embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment be the utility model a part of preferred embodiment, instead of all the embodiments.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without making creative work,
It shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of embodiment of brominated organic wastewater treating system is, 1 downstream of sanitary sewage is equipped with two-stage lattice
Grid 2 are coarse rack, fine fack, and No. two regulating reservoirs 6 are equipped with steam-heating system 22, and system is set there are two anaerobic pond, and two contact
The bottom of oxidation pond, anaerobic pond is equipped with water distribution system and elastic filler is installed in agitating device, middle level, and contact-oxidation pool bottom is equipped with
Aerating system, middle level are equipped with composite filling, and a heavy pond 9 and 12 bottom of secondary settling tank are installed sludge air-lift device, pacified in the ponds MBR 13
Fill hollow-fibre membrane, aerating system is installed in bottom, 31 bottom of ozone reaction tower installation aeration facility, 32 bottom of biological carbon reaction tower
Installation water distributor, middle level to upper layer are sequentially filled cobblestone, grain active carbon, and active sludge is cultivated on activated carbon.
Brominated waste water treatment system can be applied in water treatment system.Sanitary sewage 1 goes in water removal to float by grid 2
Float and fine particle and suspended matter enter life sump 3, after comprehensive adjustment pond 5, brominated waste water collection entered by elevator pump
Well 4 is directly entered comprehensive adjustment pond 5 by production waste line and is mixed with sanitary sewage 1, by being stirred in comprehensive adjustment pond 5
It mixes and enters No. two regulating reservoirs 6 after facility is sufficiently mixed.
Waste water enters 7 cloth water system of anaerobic pond in No. two regulating reservoirs 6 after steam-heating system 22 is heated to 35-38 DEG C
System, then through in 7 overflow of anaerobic pond to No. two anaerobic ponds 8, acidification reaction is hydrolyzed in anaerobic pond, by macromolecular machine in waste water
Object is decomposed the biodegradability that i.e. hydrolysis acidification improves waste water by the abundant chain rupture of anaerobism active microorganism.
Waste water outflow after two-stage anaerobic digestion to a heavy pond 9, wherein：It is equipped with sludge air lift pipeline in one heavy pond 9,
The sludge that anaerobic pond is lost in periodically is back to the sludge concentration ensured in anaerobic pond in anaerobic pond, prevents sludge loss；Waste water
Enter contact-oxidation pool 10 through 9 overflow of a heavy pond, by 10 overflow of contact-oxidation pool to No. two contact-oxidation pools 11, by aerobic
Active microorganism is degraded the organic matter in the waste water after anaerobic hydrolysis-acidification significantly；
Waste water by No. two 11 overflows of contact-oxidation pool to secondary settling tank 12, wherein：Sludge stripping tube is equipped in secondary settling tank 12
The sludge that contact-oxidation pool is lost in periodically is back to the sludge concentration ensured in contact-oxidation pool 10 in anaerobic pond, prevented by line
Sludge loss；Waste water discharges water to an extra through No. two 11 overflows of contact-oxidation pool to the ponds MBR 13, by MBR membrane reactors in pond
Pond 14 is arranged, wherein：If the waste water after biochemistry, which reaches new sewage drainage standard, directly to arrange 14 overflow of pond by an extra by sewage
Pond 16 is arranged to two extras, if waste water is below standard after biochemistry, sewage is boosted to ozone reaction tower 31 by extra row pond 14, gives up
Organic matter difficult to degrade decomposes chain rupture through ozone oxidation in water, and the waste water through ozone oxidation enters biological carbon reaction tower 32, passes through
The suction-operated of activated carbon and be grown in activated carbon surface aerobic bacteria biological metabolism effect, the dirt in absorption degradation sewage
Contaminate substance, keep wastewater treatment up to standard, it is up to standard after waste water enter two extras row pond 16 outside arrange.
Sludge recirculation system in biochemical process：Sludge airlift pump is installed in one heavy pond 9 and 12 bottom of secondary settling tank, periodically will be in pond
Sludge reflux to 10, No. two contact-oxidation pools 11 of 7, No. two anaerobic ponds 8 of anaerobic pond and contact-oxidation pool, excess sludge can pass through dirt
Mud pipeline enters sludge concentration tank 18, and sludge concentration tank is equipped with medicament and case 21 is added, is added in sludge concentration tank 18 a certain amount of
PAM medicaments, through the laggard people's mud cake processing unit 20 of 19 press filtration of filter press, sludge filtrate enters sludge through sludge filtrate line 33
Comprehensive adjustment pond 5 is handled.
The present embodiment, be equipped with two-stage regulating reservoir, two-stage anaerobic pond, two-stage sedimentation basin, two-stage contact-oxidation pool, the ponds MBR and
Ozone-biological carbon advanced treatment apparatus, waste water can guarantee the full and uniform of sanitary sewage and brominated waste water by two-stage regulating reservoir
Mixing, No. two regulating reservoirs are equipped with steam-heating system, ensure the requirement of Microbial Communities in Activated Sludge required temperature；Two-stage anaerobic pond is true
Protecting the waste water water conservancy residence time makes larger molecular organics in waste water decompose i.e. hydrolysis acidification by the abundant chain rupture of anaerobism active microorganism
Improve the biodegradability of waste water；The regular sludge reflux of two-stage sedimentation basin can prevent system activity sludge from dead angle, equal balance system occur
The problem of sludge concentration and sludge activity decline；The time of contact of aerobic activated sludge and waste water can be improved in two-stage catalytic oxidation,
Certifiable active microorganism is greatly degraded the organic matter after anaerobic hydrolysis-acidification；Ozone-biological carbon advanced treatment apparatus can
Ensure that the organic matter that waste water still has part difficult to degrade by biochemical treatment improves biodegradability by ozone oxidation, then passes through biology
The microorganism adhered on carbon realizes that the adsorption-regeneration of activated carbon itself achievees the purpose that remove hardly degraded organic substance in waste water, protects
Brominated discharged wastewater met the national standard is demonstrate,proved, this system is equipped with perfect sludge reflux and processing system.
Claims (10)
1. a kind of brominated organic wastewater treating system, which is characterized in that catchment including sanitary sewage sump (3), brominated waste water
Well (4) and processing system；The processing system includes the comprehensive adjustment pond (5) being linked in sequence, No. two regulating reservoirs (6), anaerobism
Pond (7), a heavy pond (9), contact-oxidation pool (10), secondary settling tank (12), the ponds MBR (13), ozone-biological carbon reaction tower (15), outside
It arranges pond (16), outer comb net (17) and sludge concentration tank (18)；The brominated organic wastewater treating system further includes back with water inlet line
(24), sludge pipeline (27), gas pipeline (30) and sludge filtrate line (33), wherein sludge pipeline (27) is connected to anaerobic pond
(7), a heavy pond (9), contact-oxidation pool (10), secondary settling tank (12), the ponds MBR (13) and sludge concentration tank (18)；The sludge pipe
Line (27) is equipped with sludge airlift pump (28), and the sludge airlift pump (28) also connect with gas pipeline (30)；The gas pipeline
(30) by wind turbine (23) respectively with the cloth in contact-oxidation pool (10), sludge concentration tank (18) and ozone-biological carbon reaction tower
Feed channel connects；Sludge concentration tank (18) the connection filter press (19)；The sludge filtrate line (33) is connected to filter press
(19) and comprehensive adjustment pond (5).
2. a kind of brominated organic wastewater treating system according to claim 1, which is characterized in that ozone-biological carbon reaction
Tower (15) includes ozone reaction tower (31) and biological carbon reaction tower (32), and ozone reaction tower (31) the bottom installation aeration is set
It applies, biological carbon reaction tower (32) bottom installation water distributor, middle level to upper layer are sequentially filled cobblestone, grain active carbon, activated carbon
The upper active sludge of culture.
3. a kind of brominated organic wastewater treating system according to claim 1, which is characterized in that sanitary wastewater (1) passes through
Grid (2) enters sanitary sewage sump (3), and the sanitary sewage sump (3) passes through water inlet with brominated waste water sump (4)
Pipeline (24) and elevator pump are connected to comprehensive adjustment pond (5).
4. a kind of brominated organic wastewater treating system according to claim 1, which is characterized in that the anaerobic pond (7),
Contact-oxidation pool (10) is two or more, and waste water passes through two or more anaerobic ponds and multiple contact-oxidation pools by overflow.
5. a kind of brominated organic wastewater treating system according to claim 1, which is characterized in that anaerobic pond (7) bottom
Portion is equipped with water distribution system and elastic filler is installed in agitating device, middle level；Contact-oxidation pool (10) bottom be equipped with aerating system,
Middle level is equipped with composite filling；Aerating system is installed in installation hollow-fibre membrane, bottom in the ponds MBR (13).
6. a kind of brominated organic wastewater treating system according to claim 1, which is characterized in that in a heavy pond (9)
Equipped with sludge air lift pipeline, sludge air lift pipeline is connected to by sludge pipeline (27) with anaerobic pond (7), in the secondary settling tank (12)
Equipped with sludge air lift pipeline, sludge air lift pipeline is connected to by sludge pipeline (27) with contact-oxidation pool (10).
7. a kind of brominated organic wastewater treating system according to claim 1, which is characterized in that the sludge concentration tank
(18) it is equipped with medicament and case (21), filter press (19) the connection mud cake processing unit (20) is added.
8. a kind of brominated organic wastewater treating system according to claim 1, which is characterized in that No. two regulating reservoirs
(6) it is connected to steam-heating system (22) by heating pipeline (29).
9. a kind of brominated organic wastewater treating system according to claim 1, which is characterized in that waste water passes through anaerobic pond
(7) a heavy pond (9) is entered by overflow line, waste water enters secondary settling tank by contact-oxidation pool (10) by overflow line
(12), then overflow enters the ponds MBR (13).
10. a kind of brominated organic wastewater treating system according to claim 1, which is characterized in that in the ozone-life
It is equipped with an extra before object carbon reaction tower (15) and arranges pond (14), overflow pipe is installed between extra row pond (14) and outer row pond (16)
Line, an extra arrange pond (14) and are connected to ozone reaction tower (31) by elevator pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721782630.4U CN208087407U (en) | 2017-12-19 | 2017-12-19 | A kind of brominated organic wastewater treating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721782630.4U CN208087407U (en) | 2017-12-19 | 2017-12-19 | A kind of brominated organic wastewater treating system |
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| Publication Number | Publication Date |
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| CN208087407U true CN208087407U (en) | 2018-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721782630.4U Expired - Fee Related CN208087407U (en) | 2017-12-19 | 2017-12-19 | A kind of brominated organic wastewater treating system |
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| Country | Link |
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| CN (1) | CN208087407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354217A (en) * | 2021-07-08 | 2021-09-07 | 河南省高新技术实业有限公司 | Treatment method and system for o-toluidine wastewater |
-
2017
- 2017-12-19 CN CN201721782630.4U patent/CN208087407U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354217A (en) * | 2021-07-08 | 2021-09-07 | 河南省高新技术实业有限公司 | Treatment method and system for o-toluidine wastewater |
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Granted publication date: 20181113 |