CN107176721A - A kind of method of wastewater treatment containing benzoic acid - Google Patents
A kind of method of wastewater treatment containing benzoic acid Download PDFInfo
- Publication number
- CN107176721A CN107176721A CN201710579532.9A CN201710579532A CN107176721A CN 107176721 A CN107176721 A CN 107176721A CN 201710579532 A CN201710579532 A CN 201710579532A CN 107176721 A CN107176721 A CN 107176721A
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- CN
- China
- Prior art keywords
- benzoic acid
- wastewater treatment
- acid
- waste water
- containing benzoic
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- 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
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
Abstract
A kind of method of wastewater treatment containing benzoic acid, belongs to water-treatment technology field.It is that iron ion additive is first added into the waste water containing benzoic acid, and it is faintly acid to adjust pH with reagent, adds activated carbon, is separated by filtration, has been reduced the filtered fluid of benzoic acid content, and the transition fluid leads to follow-up water treatment system processing.It is separated by filtration as a result of iron ion additive para Toluic Acid's network merga pass addition activated carbon; it thus can significantly reduce the content of the benzoic acid in waste water, be able to mitigate the processing pressure of follow-up water treatment system and save processing cost and be beneficial to environmental protection.
Description
Technical field
The invention belongs to water-treatment technology field, and in particular to a kind of method of wastewater treatment containing benzoic acid.
Background technology
The above mentioned waste water containing benzoic acid refers mainly to but is not limited to refer to prepare organic peroxy by chlorobenzoyl chloride
The waste water produced during thing or other chemical products.With industrial expansion, foregoing organic peroxy is prepared by chlorobenzoyl chloride
The manufacturer of compound and other chemicals is more and more, and the waste water containing benzoic acid produced therewith also accordingly increases, such as in life
Produce dibenzoyl peroxide（Hereinafter referred to as BPO）During, the washings produced are washed to BPO crude products after the synthesis of BPO crude products
In contain a small amount of benzoic acid；And for example in peroxidized t-butyl perbenzoate（Hereinafter referred to as TBPB）Production process in, to TBPB
After crude product alkali cleaning gained soda-wash water regulation pH be less than 5, centrifuge out after benzoic acid by vacuum distillation remove the tert-butyl alcohol and
TBHP, the benzoic acid for the meeting residual fraction that remained unchanged in last acid water.
" peroxidized t-butyl perbenzoate production wastewater treatment and resource that Chinese patent notification number CN102092906B recommends
The peroxidized t-butyl perbenzoate production waste water referred in chemical industry skill " is taken from process units（Synthesize the tertiary fourth of perbenzoic acid
The device of ester）Sewage draining exit strong basicity waste water, its processing method is：0.8 ~ 1.2 gram of vulcanized sodium is added into every liter of waste water, plus
Heat stirs 1.5 ~ 2 hours to 50 ~ 60 DEG C, is neutralized with hydrochloric acid to pH ＜ 5 and is separated by filtration at room temperature, recovery of benzoic acid；Filtrate
Through water-circulating pump vacuum distillation, the tert-butyl alcohol and tert-butyl peroxide mixture are reclaimed in fractionation；Mother liquor continues separated and goes out weak acid
Property low concentration wastewater, isolated low concentration acid waste water is neutralized to neutrality, is taken off through hydrolysis-catalytic oxidation, C-Fe light electrolysis
Qualified discharge after color processing；Sodium chloride is crystallized out during mother liquor distillation and concentration, filtering purification obtains byproduct sodium chloride.This side
Contain a small amount of benzoic acid in mother liquor obtained by method processing, the benzoic acid of residual can enter in sodium chloride, influence sodium chloride purity.
Because benzoic acid has certain solubility in water, thus can not be effectively by the benzene first of residual by acidifying
Acid is removed.Additionally due to benzoic acid chemical constitution is more stable, if thus handled by biodegradation method, it is often relatively more tired
Difficulty, and if benzoated waste water is introduced directly into Waste Water Treatment, then it can increase useless after entering Waste Water Treatment
COD in water, no small burden is brought to Waste Water Treatment.And for example fruit evaporates the waste water containing benzoic acid into sodium chloride
System, then residual benzoic acid can influence sodium chloride purity.
From the foregoing, how to be effectively reduced the content of benzoic acid in the waste water containing benzoic acid and use mitigation subsequently
The pressure of water process（Or burden）Into puzzlement industry and expect to solve and unsolved technical problem all the time, and
Patent disclosed so far is to all related reports, technical scheme described below is showed no in non-patent literature
Produce under this background.
The content of the invention
The task of the present invention is a kind of method of wastewater treatment containing benzoic acid of offer, and this method helps to significantly reduce
Benzoic acid content in waste water containing benzoic acid and use mitigation subsequent treatment burden.
The task of the present invention is performed by, a kind of method of wastewater treatment containing benzoic acid, its be first to containing
Iron ion additive is added in the waste water of benzoic acid, it is faintly acid to adjust pH with reagent, adds activated carbon, is separated by filtration, obtains
To the filtered fluid for reducing benzoic acid content, the transition fluid leads to follow-up water treatment system processing.
In the specific embodiment of the present invention, the mass percent concentration of the benzoic acid in the waste water is
0.05-0.35%。
In another specific embodiment of the present invention, the iron is 1 from the mol ratio of additive and the benzoic acid:
2-3。
In another specific embodiment of the present invention, described iron ion additive is ferric trichloride, ferric sulfate, nitre
Any one or a few solution in sour iron and Iron(III) chloride hexahydrate,
In another specific embodiment of the present invention, described reagent is sodium acid carbonate, sodium carbonate, sodium hydroxide, sulfuric acid
Or hydrochloric acid.
In the also specific embodiment of the present invention, described activated carbon and the mass ratio of the waste water are 1:
1000-10000。
In a still more specific embodiment of the invention, the mass percent of the benzoic acid in the filtered fluid
Concentration is 0.016-0.02%.
The technical scheme that the present invention is provided adds activity as a result of iron ion additive para Toluic Acid's network merga pass
Charcoal is separated by filtration, thus can significantly reduce the content of the benzoic acid in waste water, is able to mitigate the processing of follow-up water treatment system
Pressure and save processing cost and be beneficial to environmental protection.
Embodiment
Embodiment 1：
In 1000kg BPO washings, benzoic acid Mass % specific concentrations are 0.056%（COD is 1028mg/L）, add tri-chlorination
Iron solid 0.264kg, pH to 3.6 is adjusted with sodium acid carbonate, adds the filtering of 0.1kg activated carbons, during solution is filtered fluid after filtering
Benzoic acid Mass % specific concentrations for 0.019%, COD be 411mg/L, filtered fluid leads to follow-up water treatment system processing.
Embodiment 2：
In 1000kg BPO washings, benzoic acid Mass % specific concentrations are 0.35%（COD is 7002mg/L）, add ferric sulfate
1.95kg, adjusts pH to 3.5 for 32% sodium hydroxide solution with quality % specific concentrations, adds activated carbon 1kg suction filtrations, gained filtrate
In benzoic acid Mass % specific concentrations for 0.018%, COD be 431mg/L, filtered fluid leads to follow-up water treatment system processing.
Embodiment 3：
After 1000kg TBPB strong basicities production waste water acidifying distillation processing, benzoic acid Mass % specific concentrations are 0.15%（COD is
3050mg/L）, ferric nitrate 0.88kg is added, pH to 4 is adjusted for 50% sulfuric acid solution with quality % specific concentrations, adds activated carbon
Benzoic acid Mass % specific concentrations in 0.5kg suction filtrations, gained filtrate are that 0.02%, COD is 405mg/L, and filtered fluid leads to follow-up water
Processing system processing.
Embodiment 4：
After 1000kg TBPB strong basicities production waste water acidifying distillation processing, benzoic acid Mass % specific concentrations are 0.25%（COD is
5120mg/L）, Iron(III) chloride hexahydrate 1.85kg is added, is 30% salt acid for adjusting pH to 3.1 with quality % specific concentrations, adds activity
Benzoic acid Mass % specific concentrations in charcoal 0.7kg suction filtrations, gained filtrate are that 0.016%, COD is 380mg/L, and filtered fluid is led to subsequently
Water treatment system processing.
Claims (7)
1. a kind of method of wastewater treatment containing benzoic acid, it is characterised in that it is that iron is first added into the waste water containing benzoic acid
Ionic additive, it is faintly acid to adjust pH with reagent, adds activated carbon, is separated by filtration, has been reduced benzoic acid content
Filtered fluid, the transition fluid leads to follow-up water treatment system processing.
2. the method for wastewater treatment according to claim 1 containing benzoic acid, it is characterised in that described in the waste water
The mass percent concentration of benzoic acid is 0.05-0.35%.
3. the method for wastewater treatment according to claim 1 containing benzoic acid, it is characterised in that the iron from additive with
The mol ratio of the benzoic acid is 1:2-3.
4. the method for wastewater treatment containing benzoic acid according to claim 1 or 3, it is characterised in that described iron ion adds
Plus agent is any one or a few the solution in ferric trichloride, ferric sulfate, ferric nitrate and Iron(III) chloride hexahydrate.
5. the method for wastewater treatment according to claim 1 containing benzoic acid, it is characterised in that described reagent is carbonic acid
Hydrogen sodium, sodium carbonate, sodium hydroxide, sulfuric acid or hydrochloric acid.
6. the method for wastewater treatment according to claim 1 containing benzoic acid, it is characterised in that described activated carbon and institute
The mass ratio for stating waste water is 1:1000-10000.
7. the method for wastewater treatment according to claim 1 containing benzoic acid, it is characterised in that the institute in the filtered fluid
The mass percent concentration for stating benzoic acid is 0.016-0.02%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710579532.9A CN107176721A (en) | 2017-07-17 | 2017-07-17 | A kind of method of wastewater treatment containing benzoic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710579532.9A CN107176721A (en) | 2017-07-17 | 2017-07-17 | A kind of method of wastewater treatment containing benzoic acid |
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| Publication Number | Publication Date |
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| CN107176721A true CN107176721A (en) | 2017-09-19 |
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| CN201710579532.9A Pending CN107176721A (en) | 2017-07-17 | 2017-07-17 | A kind of method of wastewater treatment containing benzoic acid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109232348A (en) * | 2018-10-29 | 2019-01-18 | 常熟市滨江化工有限公司 | A kind of recoverying and utilizing method of 1,1-bis(t-butylperoxy)cyclohexane soda-wash water |
| CN109232347A (en) * | 2018-10-29 | 2019-01-18 | 常熟市滨江化工有限公司 | A kind of recoverying and utilizing method of 1,1- bis(t-butylperoxy) -3,3,5- trimethyl-cyclohexane soda-wash water |
| CN110330189A (en) * | 2019-07-25 | 2019-10-15 | 四川恒泰环境技术有限责任公司 | A kind of wastewater treatment method containing benzoic acid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634673A (en) * | 2012-04-25 | 2012-08-15 | 中国科学院过程工程研究所 | Method for deeply removing iron ions from chromium-containing waste residue pickle liquor |
| CN104108819A (en) * | 2014-06-13 | 2014-10-22 | 南京大学 | A combined process for treating heavy metal complexing waste water |
| CN106148706A (en) * | 2016-07-29 | 2016-11-23 | 江西理工大学 | The ferrochrome separation method of ferrum is sunk in sulfuric acid system selective complexation selective hydrolysis |
-
2017
- 2017-07-17 CN CN201710579532.9A patent/CN107176721A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634673A (en) * | 2012-04-25 | 2012-08-15 | 中国科学院过程工程研究所 | Method for deeply removing iron ions from chromium-containing waste residue pickle liquor |
| CN104108819A (en) * | 2014-06-13 | 2014-10-22 | 南京大学 | A combined process for treating heavy metal complexing waste water |
| CN106148706A (en) * | 2016-07-29 | 2016-11-23 | 江西理工大学 | The ferrochrome separation method of ferrum is sunk in sulfuric acid system selective complexation selective hydrolysis |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109232348A (en) * | 2018-10-29 | 2019-01-18 | 常熟市滨江化工有限公司 | A kind of recoverying and utilizing method of 1,1-bis(t-butylperoxy)cyclohexane soda-wash water |
| CN109232347A (en) * | 2018-10-29 | 2019-01-18 | 常熟市滨江化工有限公司 | A kind of recoverying and utilizing method of 1,1- bis(t-butylperoxy) -3,3,5- trimethyl-cyclohexane soda-wash water |
| CN110330189A (en) * | 2019-07-25 | 2019-10-15 | 四川恒泰环境技术有限责任公司 | A kind of wastewater treatment method containing benzoic acid |
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Application publication date: 20170919 |