CN1712365A - Treatment of wastewater from production of para-aminophenol and making it be resource - Google Patents
Treatment of wastewater from production of para-aminophenol and making it be resource Download PDFInfo
- Publication number
- CN1712365A CN1712365A CN200510040061.1A CN200510040061A CN1712365A CN 1712365 A CN1712365 A CN 1712365A CN 200510040061 A CN200510040061 A CN 200510040061A CN 1712365 A CN1712365 A CN 1712365A
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- CN
- China
- Prior art keywords
- aminophenol
- resin
- resource
- desorption
- waste water
- 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.)
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- PLIKAWJENQZMHA-UHFFFAOYSA-N 4-aminophenol Chemical compound NC1=CC=C(O)C=C1 PLIKAWJENQZMHA-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 239000002351 wastewater Substances 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 51
- 239000011347 resin Substances 0.000 claims abstract description 51
- 238000001179 sorption measurement Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 5
- CZGCEKJOLUNIFY-UHFFFAOYSA-N 4-Chloronitrobenzene Chemical compound [O-][N+](=O)C1=CC=C(Cl)C=C1 CZGCEKJOLUNIFY-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003960 organic solvent Substances 0.000 claims abstract description 4
- 238000003795 desorption Methods 0.000 claims description 27
- 238000010521 absorption reaction Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000003463 adsorbent Substances 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 229920001429 chelating resin Polymers 0.000 claims description 3
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 3
- 238000003843 chloralkali process Methods 0.000 claims description 2
- 239000000706 filtrate Substances 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 claims description 2
- 238000011069 regeneration method Methods 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 239000011780 sodium chloride Substances 0.000 abstract 1
- 238000004065 wastewater treatment Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical group C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A resource treatment of p-aminophenol production waste water is carried out by regulating pH of p-aminophenol production waste water, filtering, selectively removing p-nitrochlorobenzene and p-nitrophenol etc. organic impurities from hydrophobic macro-porous resin, selectively adsorbing and recovering p-aminophenol from sulfoacid composite modifying resin, obtaining colorless transparent outlet water, after advanced treating the outlet water for diaphragm electrolysis requirement, recovering sodium chloride of waste water, eluting hydrophobic macro-porous adsorbing resin from organic solvent, desorbing sulfoacid composite modifying adsorbing resin from dilute acid and water, recovering p-aminophenol from high-concentrated desorbed liquid, and applying mechanically for next de-sorption from low-concentrated desorbed liquid. It achieves less organic pollution and resource utilization.
Description
One, technical field
The present invention relates to the improvement and the method for resource of institute's waste discharge in the organic intermediate p-aminophenol production process in a kind of medicine, the dyestuffs industries.
Two, background technology
P-aminophenol, a kind of typical aromatics amphoteric substance has purposes widely at medicine, dyestuff, chemical field.Present more employing is raw material with the p-Nitrophenyl chloride, and hydrolysis under certain condition and hydrogenating reduction make, but no matter adopts which kind of synthetic route, and wastewater flow rate is all bigger, and 1 ton of p-aminophenol of average every production is with tens tons of waste water of output.It is golden yellow that this waste water is, the about 3000-8000mg/L of the content of p-aminophenol, and TOC reaches 6, and more than the 000mg/L, and inorganic salt content is higher in the waste water, and the sodium-chlor of 10%-12% is arranged approximately, and a spot of raw material, intermediate.So far do not see the report of recycling treatment p-aminophenol factory effluent.
Three, summary of the invention
1, goal of the invention: the improvement and the method for resource that the purpose of this invention is to provide a kind of p-aminophenol factory effluent, the contaminated wastewater load is reduced, for subsequent disposal creates conditions, reclaim the useful resources in the waste water simultaneously, realize the combination that waste water treatment and resource reclaim.
2, technical scheme: for achieving the above object, the improvement of a kind of p-aminophenol factory effluent of the present invention and method of resource is characterized in that it may further comprise the steps:
(1) the pH value of adjusting p-aminophenol factory effluent makes it in a reasonable range (5-9);
(2) step (1) gained waste water is removed after filtration wherein suspended substance, mechanical impurity;
(3) with above-mentioned filtrate by being filled with the adsorption tower of hydrophobicity macroporous adsorbent resin A, remove organic impuritys such as p-Nitrophenyl chloride in the waste water and p-NP, make the protection tower of next stage absorption;
(4) adsorb organic solvent desorptions such as saturated Resin A methyl alcohol, ethanol in the step (3), resin is reusable;
(5) with gained water outlet in the step (3) by being filled with the adsorption tower of the composite function resin B that has sulfonic acid group, make the p-aminophenol in the waste water optionally be adsorbed on the resin, obtain water white absorption effluent, this water outlet can be used for chloralkali process and continues recovery sodium-chlor wherein;
(6) the composite function resin B that will adsorb p-aminophenol with desorbing agent carries out desorption and regeneration;
(7) reclaim p-aminophenol the high concentration desorption liquid that desorption gets off on resin B, light concentration desorption liquid is used for preparing the next batch desorbing agent and applies mechanically with the wash water circulation at head.
Among the present invention, through simple pretreated p-aminophenol factory effluent-10-30 ℃ and flow for the condition of 2～8 resin bed volumes per hour under successively by being filled with the adsorption tower of hydrophobicity macroporous resin and complex function adsorption resin, make raw materials for production, intermediate and product p-aminophenol in the waste water are adsorbed on two kinds of different resins the absorption effluent water white transparency selectively respectively.
Hydrophobic resin A described in the present invention can be Amberlite XAD-2, the XAD-4 of home-made NDA150, NDA-100, NDA1800 and the U.S., and the serial polymeric adsorbents such as Diaion HP of Japan; The composite function resin B that sulfonic group is modified can be home-made NDA-9, NDA-10, series plastics such as NDA-11.The polymeric adsorbent that optimizes is respectively: A is NDA1800, and B is the NDA-10 resin, is Jiangsu Nanda Gede Environmental Protection Technology Co., Ltd and produces.
Desorbing agent described in the present invention can be that concentration is the hydrochloric acid soln of 1-10%, and desorption temperature is 30～80 ℃, and the flow of desorbing agent is 0.2～5 resin bed volume per hour.
Adsorption tower all can adopt single tower absorption and desorption operation scheme in the method for the invention, also can adopt the double-column in series suction type, I, II, three adsorption towers of III promptly are set, earlier with I, II tower series connection following current absorption, the I tower is as first post, the II tower is as stern post, after the absorption of I tower is saturated, switch to II, III tower series connection following current absorption, the II tower is as first post, and the III tower is as stern post, the I tower carries out the adverse current desorption simultaneously, so cyclical operation can guarantee the operation continuously all the time of whole device, increases work efficiency.
3, beneficial effect: by the method for the invention, COD after the p-aminophenol production wastewater treatment
CrReduce more than 90%, alleviated pollution load, realize that for follow-up advanced treatment condition has been created in the recovery of sodium-chlor, reclaim the organism p-aminophenol in the raw wastewater simultaneously, thereby realize the improvement and the resource utilization of p-aminophenol factory effluent.Specifically:
(1) p-aminophenol factory effluent effluent color dilution after two-stage absorption reduces greatly;
(2) the TOC clearance is greater than 95% after two-stage absorption, and the p-aminophenol rate of recovery is greater than 98%; Created good condition for the sodium-chlor in the follow-up further recovery waste water simultaneously;
(3) because before the selective adsorption p-aminophenol, the resin column of protectiveness has been removed most of organic impurity in advance, make that the p-aminophenol purity that reclaims is higher from waste water, impurity is less;
(4) realize wastewater zero discharge substantially;
(5) the polymeric adsorbent regenerability is good, and is reusable.
Four, embodiment
The present invention is further described by the following examples.
Embodiment 1: each 10mlNDA1800 (about 7 gram) and NDA-10 (about 7.5 grams) resin are respectively charged into (Φ 12 * 160mm) in the glass adsorption column that strap clamp overlaps.The p-aminophenol factory effluent is regulated pH to 7 (can in the 5-9 numerical range), after the filtration, under the room temperature (10～30 ℃), with the flow (i.e. 8 resin bed volumes) of 80ml/h at first by the NDA1800 resin bed, treatment capacity is that 400ml/ criticizes, and it is collected in the container of clean dried.Then with the one-level absorption effluent with the flow of 20ml/h (i.e. 2 resin bed volumes) by NDA-10 complex function adsorption resin bed, wastewater treatment capacity is that 100ml/ criticizes.Raw wastewater TOC is 6100mg/L, COD
CrBe 18000mg/L, the content of p-aminophenol is 7500mg/L, and the TOC of yielding water after the secondary absorption is reduced to 300mg/L, COD
CrReduce to 950mg/L, the content of p-aminophenol is less than 10mg/L, the absorption effluent water white transparency.
After one-level polymeric adsorbent absorption was saturated, with industrial spirit desorption (or with methyl alcohol or ethanol), resin was reused.After the secondary absorption resin absorption is saturated, use the hydrochloric acid soln of 15ml 4% and 25ml tap water in 50 ℃ successively, flow with 10ml/h carries out desorption by the NDA-10 resin bed, the high concentration desorption liquid 15ml that desorption gets off reclaims p-aminophenol through transferring alkali, and lower concentration wash water cover is used for following batch desorption manipulation.
Embodiment 2: with two glass adsorption columns in two PVC adsorption columns (Φ 200*1400) alternate embodiment 1, every each 25L of post loaded resin amount, operate according to 2500 times of wastewater flow and treatment capacities in embodiment 1, obtained the effect that reclaims with embodiment 1 corresponding to adsorption treatment and resource.
Embodiment 3: waste water directly advances composite function resin NDA-10 resin column.Select the identical PVC adsorption tower (Φ 200*1400mm) of three specifications (number respectively I, II, III number), every tower filling NDA-10 resin 25L (about 18Kg).(10～30 ℃) will squeeze into adsorption tower through the p-aminophenol factory effluent (the about 2500mg/l of its p-aminophenol content) after adjust pH, the filtration under the room temperature, adopt double tower (I, II tower) the series connection following current absorption method of single tower (III tower) following current desorption simultaneously.Absorption flow is controlled at 50L/h, and every batch processing amount is controlled at 300L.Waste water after treatment, the absorption effluent water white transparency, p-aminophenol content is less than 10mg/L.Sodium-chlor wherein can be further reclaimed in water outlet.
The I adsorption tower that adsorbed dress NDA-10 complex function adsorption resin in the 300L waste water is used aqueous hydrochloric acid and tap water desorption down at 45～55 ℃.Earlier raffinate in the I tower is drained,, carry out following current drip washing with the tap water of 62.5L with the flow of 25L/h then, the high concentration desorption liquid of preceding 40L is transferred alkali, the recovery p-aminophenol with 4% hydrochloric acid soln of 40L flow following current desorption with 20L/h; The wash water of back 62.5L is put into storage tank, and 30L is used to prepare the next batch desorbing agent, and all the other are used as the head wash water of desorption next time.
I adsorption tower after desorption finishes will be as the stern post of the 3rd batch of waste water adsorption operations (when handling second batch of waste water, II, III two towers are connected, post headed by the II tower, the III tower is a stern post), cyclical operation.Can guarantee the operation continuously all the time of whole device, increase work efficiency.
Embodiment 4: the complex function adsorption resin among the embodiment 1 used instead according to this be NDA-9, NDA-150 or NDA-11 resin, wastewater treatment capacity and handle after effluent quality all slightly be inferior to NDA-10.
Embodiment 5: change the hydrophobic resin among the embodiment 1 into home-made NDA150 or NDA-100 according to this, or Amberlite XAD-2, the XAD-4 of the U.S., or the Diaion HP polymeric adsorbent of Japan, its result is same as embodiment 1 substantially.
Claims (7)
1, a kind of improvement of p-aminophenol factory effluent and method of resource is characterized in that it may further comprise the steps:
(1) the pH value of adjusting p-aminophenol factory effluent is 5-9;
(2) after filtration, removal suspended substance, mechanical impurity wherein with step (1) gained waste water;
(3) with above-mentioned filtrate by being filled with the adsorption tower of hydrophobicity macroporous adsorbent resin, remove organic impuritys such as p-Nitrophenyl chloride in the waste water and p-NP, as next stage absorption protection tower;
(4) with the saturated resin of absorption organic solvent desorption in the step (3);
(5) with gained water outlet in the step (3) by being filled with the adsorption tower of the composite function resin that has sulfonic acid group, make the p-aminophenol in the waste water optionally be adsorbed on the resin, obtain water white absorption effluent, this water outlet can be used for chloralkali process and continues recovery sodium-chlor wherein;
(6) composite function resin that has sulfonic acid group that will adsorb p-aminophenol with desorbing agent carries out desorption and regeneration;
(7) reclaim p-aminophenol in the high concentration desorption liquid that desorption gets off on the resin from step (6), light concentration desorption liquid is used for preparing the next batch desorbing agent and applies mechanically with the wash water circulation at head.
2, the improvement of a kind of p-aminophenol factory effluent according to claim 1 and method of resource, it is characterized in that: in step (3), Amberlite XAD-2, XAD-4 that described hydrophobicity macroporous resin is NDA150, NDA-100, NDA1800 or the U.S., or the Diaion HP polymeric adsorbent of Japan.
3, the improvement of a kind of p-aminophenol factory effluent according to claim 1 and method of resource is characterized in that: in step (5), composite function resin is NDA-9, NDA-10, NDA-11 resin.
4, the improvement of a kind of p-aminophenol factory effluent according to claim 1 and method of resource, it is characterized in that: in step (3), under-10-30 ℃, waste water during by resin flow be 2-8 resin bed volume per hour, treatment capacity is an every batch of 10-50 resin bed volume; In step (5), flow is 1-4 resin bed volume per hour during by resin, and treatment capacity is an every batch of 10-30 resin bed volume.
5, want the improvement and the method for resource of ball 1 described a kind of p-aminophenol factory effluent according to right, it is characterized in that: in step (6), described desorbing agent is that concentration is the hydrochloric acid soln of 1-10%, desorption temperature is 30～80 ℃, and the flow of desorbing agent is 0.2-5 resin bed volume per hour.
6, want the improvement and the method for resource of ball 1 described a kind of p-aminophenol factory effluent according to right, it is characterized in that: in step (3) and step (5), adopt single tower or double-column in series following current absorption, single tower following current desorption operation scheme.
7, want the improvement and the method for resource of ball 1 described a kind of p-aminophenol factory effluent according to right, it is characterized in that: in step (4), organic solvent is methyl alcohol, ethanol desorption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510040061.1A CN1712365A (en) | 2005-05-18 | 2005-05-18 | Treatment of wastewater from production of para-aminophenol and making it be resource |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510040061.1A CN1712365A (en) | 2005-05-18 | 2005-05-18 | Treatment of wastewater from production of para-aminophenol and making it be resource |
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| CN1712365A true CN1712365A (en) | 2005-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200510040061.1A Withdrawn CN1712365A (en) | 2005-05-18 | 2005-05-18 | Treatment of wastewater from production of para-aminophenol and making it be resource |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352770C (en) * | 2006-01-23 | 2007-12-05 | 南京大学 | Integrated process for treating waste water of p-aminophenol production and resource recovery method |
| CN105417774A (en) * | 2015-11-24 | 2016-03-23 | 湖北鸿鑫化工有限公司 | Recycling method of 2-(4-methyl phenyl)-benzoxazole synthetic process wastewater |
| CN106565052A (en) * | 2015-10-09 | 2017-04-19 | 杭州天创环境科技股份有限公司 | Technological processing method for phenolic wastewater in petrochemical engineering production |
| CN106630413A (en) * | 2016-12-17 | 2017-05-10 | 上海问鼎环保科技有限公司 | Resource treatment method of carbendazol production wastewater |
| CN106693582A (en) * | 2017-01-05 | 2017-05-24 | 南京大学 | Method for separating and recycling organic solvent from dregs evaporation tail gas |
| CN107117749A (en) * | 2017-05-17 | 2017-09-01 | 浙江奇彩环境科技股份有限公司 | A kind of para-aminophenol produces the recycling processing method of waste water |
| CN107129078A (en) * | 2017-04-28 | 2017-09-05 | 南京环保产业创新中心有限公司 | O-aminophenol wastewater treatment and method of resource |
| CN108033511A (en) * | 2017-12-27 | 2018-05-15 | 烟台安诺其精细化工有限公司 | A kind of processing method of diallyl thing production waste water |
| CN108083384A (en) * | 2017-12-27 | 2018-05-29 | 烟台安诺其精细化工有限公司 | A kind of processing method of benzyl object production waste water |
| CN108128837A (en) * | 2017-12-27 | 2018-06-08 | 烟台安诺其精细化工有限公司 | One inter-species diethyl object produces the processing method of waste water |
| CN108793493A (en) * | 2018-06-22 | 2018-11-13 | 西安蓝深环保科技有限公司 | O-aminophenol recovery and treatment method in a kind of strong brine |
| CN110563253A (en) * | 2019-09-05 | 2019-12-13 | 北京环球中科水务科技有限公司 | treatment method of anisole organic wastewater |
| CN111410328A (en) * | 2020-03-30 | 2020-07-14 | 江苏国创新材料研究中心有限公司 | Treatment method of high-concentration organic wastewater |
| CN111995152A (en) * | 2020-08-24 | 2020-11-27 | 浙江大洋生物科技集团股份有限公司 | Method for treating high-concentration wastewater generated in synthesis of anisole from methyl sodium sulfate waste residue |
| CN112062335A (en) * | 2020-09-04 | 2020-12-11 | 江苏海普功能材料有限公司 | System and process for treating pyridine-containing wastewater |
| CN112551773A (en) * | 2020-12-01 | 2021-03-26 | 山东锐海环境科技有限公司 | Process and device for recycling production wastewater of rubber accelerator NS |
| CN113277590A (en) * | 2021-02-04 | 2021-08-20 | 中化河北有限公司 | Method for treating 1, 3-cyclohexanedione production wastewater by using adsorption resin |
-
2005
- 2005-05-18 CN CN200510040061.1A patent/CN1712365A/en not_active Withdrawn
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352770C (en) * | 2006-01-23 | 2007-12-05 | 南京大学 | Integrated process for treating waste water of p-aminophenol production and resource recovery method |
| CN106565052A (en) * | 2015-10-09 | 2017-04-19 | 杭州天创环境科技股份有限公司 | Technological processing method for phenolic wastewater in petrochemical engineering production |
| CN105417774A (en) * | 2015-11-24 | 2016-03-23 | 湖北鸿鑫化工有限公司 | Recycling method of 2-(4-methyl phenyl)-benzoxazole synthetic process wastewater |
| CN105417774B (en) * | 2015-11-24 | 2017-09-29 | 湖北鸿鑫化工有限公司 | 2‑（4 aminomethyl phenyls）The recoverying and utilizing method of benzoxazole synthesis technique waste water |
| CN106630413A (en) * | 2016-12-17 | 2017-05-10 | 上海问鼎环保科技有限公司 | Resource treatment method of carbendazol production wastewater |
| CN106693582A (en) * | 2017-01-05 | 2017-05-24 | 南京大学 | Method for separating and recycling organic solvent from dregs evaporation tail gas |
| CN107129078A (en) * | 2017-04-28 | 2017-09-05 | 南京环保产业创新中心有限公司 | O-aminophenol wastewater treatment and method of resource |
| CN107117749A (en) * | 2017-05-17 | 2017-09-01 | 浙江奇彩环境科技股份有限公司 | A kind of para-aminophenol produces the recycling processing method of waste water |
| CN108033511A (en) * | 2017-12-27 | 2018-05-15 | 烟台安诺其精细化工有限公司 | A kind of processing method of diallyl thing production waste water |
| CN108083384A (en) * | 2017-12-27 | 2018-05-29 | 烟台安诺其精细化工有限公司 | A kind of processing method of benzyl object production waste water |
| CN108128837A (en) * | 2017-12-27 | 2018-06-08 | 烟台安诺其精细化工有限公司 | One inter-species diethyl object produces the processing method of waste water |
| CN108793493A (en) * | 2018-06-22 | 2018-11-13 | 西安蓝深环保科技有限公司 | O-aminophenol recovery and treatment method in a kind of strong brine |
| CN110563253A (en) * | 2019-09-05 | 2019-12-13 | 北京环球中科水务科技有限公司 | treatment method of anisole organic wastewater |
| CN111410328A (en) * | 2020-03-30 | 2020-07-14 | 江苏国创新材料研究中心有限公司 | Treatment method of high-concentration organic wastewater |
| CN111995152A (en) * | 2020-08-24 | 2020-11-27 | 浙江大洋生物科技集团股份有限公司 | Method for treating high-concentration wastewater generated in synthesis of anisole from methyl sodium sulfate waste residue |
| CN111995152B (en) * | 2020-08-24 | 2022-05-13 | 浙江大洋生物科技集团股份有限公司 | Method for treating high-concentration wastewater generated in synthesis of anisole from methyl sodium sulfate waste residues |
| CN112062335A (en) * | 2020-09-04 | 2020-12-11 | 江苏海普功能材料有限公司 | System and process for treating pyridine-containing wastewater |
| CN112551773A (en) * | 2020-12-01 | 2021-03-26 | 山东锐海环境科技有限公司 | Process and device for recycling production wastewater of rubber accelerator NS |
| CN113277590A (en) * | 2021-02-04 | 2021-08-20 | 中化河北有限公司 | Method for treating 1, 3-cyclohexanedione production wastewater by using adsorption resin |
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