CN103523846A - Treatment method of high-concentration fluoride-containing aromatic hydrocarbon wastewater - Google Patents
Treatment method of high-concentration fluoride-containing aromatic hydrocarbon wastewater Download PDFInfo
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- CN103523846A CN103523846A CN201310475229.6A CN201310475229A CN103523846A CN 103523846 A CN103523846 A CN 103523846A CN 201310475229 A CN201310475229 A CN 201310475229A CN 103523846 A CN103523846 A CN 103523846A
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- aromatic hydrocarbon
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Abstract
The invention relates to a wastewater treatment method, and discloses a treatment method of high-concentration fluoride-containing aromatic hydrocarbon wastewater. The treatment method comprises the following steps: putting resin into a glass adsorption column with a sleeve, soaking for 2~4h with a HCl solution with the mass fraction of 3% ~ 5%, then using 3 ~ 4BV of the HCl solution with the mass fraction of 3% ~ 5% for passing through the column, then using pure water for eluting to DH to be close to neutral, soaking for 4h with a NaOH solution with the mass fraction of 3% ~ 5%, then using 3 ~ 4BV of the NaOH solution with the mass fraction of 3% ~ 5% for passing through the column, finally using the pure water for eluting to DH to be neutral; enabling the high-concentration fluoride-containing aromatic hydrocarbon wastewater to flow through a resin bed layer at the temperature of 303K at a speed of 5BV / h. The treatment method can significantly reduce the wastewater pollution load, create the conditions for the follow-up biochemical treatment, and recycle useful resources in the wastewater, and the purposes of circular economy and low carbon production are really realized.
Description
Technical field
The present invention relates to a kind for the treatment of process of waste water.
Background technology
The chloro-6-fluorobenzyl chloride of 2-, the chloro-6-fluorobenzaldehyde of 2-and the chloro-6-fluorobenzoic acid of 2-etc. are important Organic Chemicals and crucial medicine intermediate, mainly synthetic by routes such as diazonium, chlorination and hydrolysis.In production process, can produce a large amount of organic waste water, this waste water main component is fluorine-containing aromatic hydrocarbon and aldehydes matter.Phenols and fluorine are all protoplasma poisonous substances.Long-term drinking, by the water of its pollution, can work the mischief to human body, and priority pollutants is listed in by many national environmental protection department.
Photocatalytic degradation method, oxidation style, microbial degradation method and absorption method are the main method that current organic industrial sewage is administered.Wherein advantage such as resin adsorption method efficiency is high because having, stable performance and resourcebility etc. is used widely in numerous chemical wastewater treatments.
Summary of the invention
The present invention aims to provide a kind of effectively to remove the method for the high-concentration fluorine-contained aromatic hydrocarbon waste water of processing of waste water COD.
A kind of method of processing high-concentration fluorine-contained aromatic hydrocarbon waste water of the present invention, comprising:.
150 mL resins are put into the glass adsorption column (D 25 mm * 800 mm) of jacketed, HCl solution soaking 2～4 h that are 3%～5% with massfraction, then use 3～4 BV (BV is resin volume) to cross post with the HCl solution of concentration, with pure water, being washed till DH again approaches neutral, Na0H solution soaking 4 h that are 3%～5% with massfraction, use the 3-4 BV NaOH solution of same concentration to cross post, it is neutral finally with pure water, cleaning to DH again; Utilize constant flow pump to make high-concentration fluorine-contained aromatic hydrocarbon waste water with the speed of 5 BV/h, flow through resin bed under the temperature condition of 303 K.
Preferably, resin first carries out pre-treatment before using, and comprising: with acetone, reflux and wash approximately 8 h in apparatus,Soxhlet's respectively, then water washes away acetone, with dilute hydrochloric acid solution, repeatedly clean, then wash, after drying, at 50 ℃, dry that to constant weight, to put into moisture eliminator standby.
Or preferably, described waste water first carries out pre-treatment before processing, comprising: to adding in waste water unslaked lime and flocculation agent to adjust pH, be 8～9, standing rear filtration, is adjusted to 3～6 by the pH of filtrate.
The present invention has significantly reduced contaminated wastewater load, for condition has been created in follow-up biochemical treatment, has also reclaimed resource useful in waste water simultaneously, has realized waste water treatment and the combination that resource reclaims, and has really realized the object of recycling economy and low-carbon (LC) production.
Embodiment
Embodiment mono-.
To adding in waste water unslaked lime and flocculation agent to adjust pH, be 8～9, standing rear filtration, is adjusted to 3～6 by the pH of filtrate.
LS600 resin refluxes and washs approximately 8 h with acetone in apparatus,Soxhlet's, and then water washes away acetone, repeatedly cleans, then wash with dilute hydrochloric acid solution, dries that to constant weight, to put into moisture eliminator standby after drying at 50 ℃.
150 mL resins are put into the glass adsorption column (D 25 mm * 800 mm) of jacketed, HCl solution soaking 2～4 h that are 3%～5% with massfraction, then use 3～4 BV (BV is resin volume) to cross post with the HCl solution of concentration, with pure water, being washed till DH again approaches neutral, Na0H solution soaking 4 h that are 3%～5% with massfraction, use the 3-4 BV NaOH solution of same concentration to cross post, it is neutral finally with pure water, cleaning to DH again; Utilize constant flow pump to make high-concentration fluorine-contained aromatic hydrocarbon waste water with the speed of 5 BV/h, flow through resin bed under the temperature condition of 303 K.
Waste water COD clearance reaches 73.4%, 3-chloro-2-methyl phenol, the chloro-6-fluorobenzaldehyde of 2-and the chloro-6-fluorobenzoic acid of 2-adsorption rate and reaches more than 98.1%, removes fluorion 100～120 mg/L.
Claims (3)
1. process a method for high-concentration fluorine-contained aromatic hydrocarbon waste water, it is characterized in that comprising:
150 mL resins are put into the glass adsorption column of jacketed, HCl solution soaking 2～4 h that are 3%～5% with massfraction, then with 3～4 BV, with the HCl solution of concentration, cross post, with pure water, being washed till DH again approaches neutral, Na0H solution soaking 4 h that are 3%～5% with massfraction, use the 3-4 BV NaOH solution of same concentration to cross post, it is neutral finally with pure water, cleaning to DH again; Utilize constant flow pump to make high-concentration fluorine-contained aromatic hydrocarbon waste water with the speed of 5 BV/h, flow through resin bed under the temperature condition of 303 K.
2. the method for the high-concentration fluorine-contained aromatic hydrocarbon waste water of processing as claimed in claim 1, it is characterized in that first carrying out pre-treatment before resin is used, comprise: washing approximately 8 h reflux resin with acetone respectively in apparatus,Soxhlet's, then water washes away acetone, with dilute hydrochloric acid solution, repeatedly clean, wash again, after drying, at 50 ℃, dry that to constant weight, to put into moisture eliminator standby.
3. the method for the high-concentration fluorine-contained aromatic hydrocarbon waste water of processing as claimed in claim 1 or 2, it is characterized in that described waste water first carries out pre-treatment before processing, comprise: to adding in waste water unslaked lime and flocculation agent to adjust pH, be 8～9, standing rear filtration, is adjusted to 3～6 by the pH of filtrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475229.6A CN103523846A (en) | 2013-10-13 | 2013-10-13 | Treatment method of high-concentration fluoride-containing aromatic hydrocarbon wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475229.6A CN103523846A (en) | 2013-10-13 | 2013-10-13 | Treatment method of high-concentration fluoride-containing aromatic hydrocarbon wastewater |
Publications (1)
| Publication Number | Publication Date |
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| CN103523846A true CN103523846A (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310475229.6A Pending CN103523846A (en) | 2013-10-13 | 2013-10-13 | Treatment method of high-concentration fluoride-containing aromatic hydrocarbon wastewater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109081777A (en) * | 2018-08-30 | 2018-12-25 | 西安金沃泰环保科技有限公司 | A kind of tetrafluorobenzoic aid Sewage treatment and processing method |
| CN113185031A (en) * | 2021-05-15 | 2021-07-30 | 江苏丰华化学工业有限公司 | Fluorine-containing aromatic hydrocarbon wastewater treatment process |
-
2013
- 2013-10-13 CN CN201310475229.6A patent/CN103523846A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109081777A (en) * | 2018-08-30 | 2018-12-25 | 西安金沃泰环保科技有限公司 | A kind of tetrafluorobenzoic aid Sewage treatment and processing method |
| CN113185031A (en) * | 2021-05-15 | 2021-07-30 | 江苏丰华化学工业有限公司 | Fluorine-containing aromatic hydrocarbon wastewater treatment process |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |