CN113045112A - Polyester wastewater pretreatment device and working method thereof - Google Patents
Polyester wastewater pretreatment device and working method thereof Download PDFInfo
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- CN113045112A CN113045112A CN202110248403.8A CN202110248403A CN113045112A CN 113045112 A CN113045112 A CN 113045112A CN 202110248403 A CN202110248403 A CN 202110248403A CN 113045112 A CN113045112 A CN 113045112A
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- tank
- anaerobic
- water
- adjusting tank
- pretreatment device
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- 239000002351 wastewater Substances 0.000 title claims abstract description 25
- 229920000728 polyester Polymers 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000020477 pH reduction Effects 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003513 alkali Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 8
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims abstract description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 235000015097 nutrients Nutrition 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 239000011574 phosphorus Substances 0.000 claims abstract description 7
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000015556 catabolic process Effects 0.000 claims abstract description 4
- 238000006731 degradation reaction Methods 0.000 claims abstract description 4
- 235000019253 formic acid Nutrition 0.000 claims abstract description 4
- 229920002521 macromolecule Polymers 0.000 claims abstract description 4
- 239000002957 persistent organic pollutant Substances 0.000 claims abstract description 4
- 230000007062 hydrolysis Effects 0.000 claims description 11
- 238000006460 hydrolysis reaction Methods 0.000 claims description 11
- 241000894006 Bacteria Species 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 3
- 238000005842 biochemical reaction Methods 0.000 claims description 3
- 235000016709 nutrition Nutrition 0.000 claims description 3
- 230000035764 nutrition Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000002053 acidogenic effect Effects 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000000696 methanogenic effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 244000005700 microbiome Species 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
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
- C02F9/00—Multistage 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2103/38—Polymers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Abstract
The invention provides a polyester wastewater pretreatment device and a working method thereof, which carry out targeted pretreatment on raw water, separate floating oil, simultaneously carry out anaerobic acidogenesis and methanogenesis in different reactors, and reduce the influence on the subsequent treatment process. The polyester wastewater is sent into a standing separation tank, so that organic pollutants in water are dissolved out from the water and float upwards; the wastewater after standing separation enters a regulating tank, alkali is added for regulating the water quantity and the water quality, and meanwhile, a nitrogen and phosphorus nutrient solution is added; then the water enters a hydrolytic acidification tank to hydrolyze insoluble organic matters into soluble organic matters, and the difficultly biodegradable macromolecular substances are converted into easily biodegradable micromolecular substances; the effluent after hydrolytic acidification passes through an anaerobic regulating tank, and the water quality and the water quantity are regulated; then sending the mixture into an anaerobic tank to convert acetic acid, hydrogen, carbonic acid, formic acid and methanol into methane, carbon dioxide and new cell substances; the effluent after anaerobic degradation enters a secondary aerobic biochemical system to be discharged after reaching the standard.
Description
Technical Field
The invention relates to a polyester wastewater pretreatment device and a working method thereof.
Background
The polyester wastewater belongs to chemical wastewater with high pollution concentration, and the currently adopted treatment process is as follows: regulation, coagulating sedimentation, anaerobic treatment and secondary aerobic treatment. The polyester wastewater contains low molecular organic matters such as glycol, benzoic acid and acetaldehyde, and also contains intermediate products generated in the esterification and polycondensation processes, wherein some organic matters are slightly soluble in water and slowly appear in the form of floating oil along with time, and if the organic matters are not separated in advance, biochemical sludge is wrapped by the floating oil and floats upwards in a subsequent biochemical system, so that sludge loss is caused; in addition, anaerobic acidogenesis and methanogenesis are carried out in the same reactor, and because acidogenic bacteria are not sensitive to methanogenic bacteria, if impact load and environmental conditions are suddenly changed, the activity of the methanogenic bacteria is affected, and system collapse is caused.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a polyester wastewater pretreatment device and a working method thereof.
The technical scheme adopted by the invention for solving the problems is as follows: a polyester wastewater pretreatment device is characterized in that: comprises a standing separation tank, an adjusting tank, a hydrolysis acidification tank, an anaerobic adjusting tank, an anaerobic tank and a secondary aerobic biochemical system; the outlet of the standing separation tank is connected with the inlet of the adjusting tank, the outlet of the adjusting tank is connected with the inlet of the hydrolysis acidification tank, the outlet of the hydrolysis acidification tank is connected with the inlet of the anaerobic adjusting tank, the outlet of the anaerobic adjusting tank is connected with the inlet of the anaerobic tank, and the outlet of the anaerobic tank is connected with the inlet of the second-stage aerobic biochemical system.
The standing separation pool is provided with an oil scraper.
The adjusting tank is provided with an alkali feeding port and a nitrogen and phosphorus nutrient solution feeding port.
The anaerobic adjusting tank is provided with an alkali adding port.
The outlet of the anaerobic tank is also connected with the inlet of the anaerobic adjusting tank.
A working method of a polyester wastewater pretreatment device is characterized in that: the method comprises the following steps: the polyester wastewater is sent into a standing separation tank, so that organic pollutants in water are dissolved out from the water and float upwards; the wastewater after standing separation enters an adjusting tank, alkali is added to adjust the water quantity and the water quality until the pH is 5.5-6.5, and nitrogen and phosphorus nutrient solution is added to provide required nutrition for subsequent biochemical reaction; then the mixture enters a hydrolysis acidification pool of an acid-producing phase to hydrolyze insoluble organic matters into soluble organic matters, and macromolecular substances which are difficult to biodegrade are converted into micromolecular substances which are easy to biodegrade, so that substrates are provided for anaerobic methane bacteria; the effluent after hydrolytic acidification passes through an anaerobic adjusting tank, and the pH is adjusted to 6.6-7.4 by adjusting the water quality and the water quantity; then sending the mixture into an anaerobic tank to convert acetic acid, hydrogen, carbonic acid, formic acid and methanol into methane, carbon dioxide and new cell substances; the effluent after anaerobic degradation enters a secondary aerobic biochemical system to be discharged after reaching the standard.
Compared with the prior art, the invention has the following advantages and effects: the raw water is firstly pretreated in a targeted manner, the floating oil is separated, the scraping is convenient, and meanwhile, the anaerobic acidogenic stage and the methane producing stage are separated, and are not carried out in the same reactor, so that the influence on the subsequent treatment process is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
The embodiment of the invention comprises a standing separation tank 1, an adjusting tank 2, a hydrolysis acidification tank 3, an anaerobic adjusting tank 4, an anaerobic tank 5 and a secondary aerobic biochemical system 6.
The outlet of the standing separation tank 1 is connected with the inlet of the adjusting tank 2, the outlet of the adjusting tank 2 is connected with the inlet of the hydrolysis acidification tank 3, the outlet of the hydrolysis acidification tank 3 is connected with the inlet of the anaerobic adjusting tank 4, the outlet of the anaerobic adjusting tank 4 is connected with the inlet of the anaerobic tank 5, and the outlet of the anaerobic tank 5 is connected with the inlet of the second-stage aerobic biochemical system 6.
The outlet of the anaerobic tank 5 is also connected with the inlet of the anaerobic adjusting tank 4, and the functions are as follows: the water quality of the inlet water is diluted, the hydraulic surface load is increased, the turbulence of fluid among filler particles is enhanced, the filler blockage is prevented, and meanwhile, the contact between microorganisms and pollutants is increased.
An oil scraper is arranged on the standing separation pool 1.
An alkali feeding port and a nitrogen and phosphorus nutrient solution feeding port are arranged on the adjusting tank 2.
An alkali adding port is arranged on the anaerobic adjusting tank 4.
A working method of a polyester wastewater pretreatment device comprises the following steps:
the polyester wastewater is sent into a standing separation tank 1, so that organic pollutants in water are dissolved out and float upwards from the water, and organic grease floating on the water surface is scraped by an oil scraper; the wastewater after standing separation enters an adjusting tank 2, alkali is added to adjust the water quantity and the water quality until the pH value is 5.5-6.5, and nitrogen and phosphorus nutrient solution is added to provide required nutrition for subsequent biochemical reaction; then the water enters a hydrolytic acidification tank 3 of an acid-producing phase by a pump, insoluble organic matters are hydrolyzed into soluble organic matters, and macromolecular substances which are difficult to biodegrade are converted into micromolecular substances which are easy to biodegrade, so that substrates are provided for anaerobic methane bacteria; the effluent after hydrolytic acidification passes through an anaerobic adjusting tank 4, and the pH is adjusted to 6.6-7.4 by adjusting the water quality and the water quantity, so that proper conditions are created for anaerobic reaction; then the mixture is pumped into an anaerobic tank 5 to convert acetic acid, hydrogen, carbonic acid, formic acid and methanol into methane, carbon dioxide and new cell substances, so that the concentration of pollutants is reduced; the effluent after anaerobic degradation enters a conventional secondary aerobic biochemical system 6 and can be discharged after reaching the standard.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A polyester wastewater pretreatment device is characterized in that: comprises a standing separation tank, an adjusting tank, a hydrolysis acidification tank, an anaerobic adjusting tank, an anaerobic tank and a secondary aerobic biochemical system; the outlet of the standing separation tank is connected with the inlet of the adjusting tank, the outlet of the adjusting tank is connected with the inlet of the hydrolysis acidification tank, the outlet of the hydrolysis acidification tank is connected with the inlet of the anaerobic adjusting tank, the outlet of the anaerobic adjusting tank is connected with the inlet of the anaerobic tank, and the outlet of the anaerobic tank is connected with the inlet of the second-stage aerobic biochemical system.
2. The polyester wastewater pretreatment device according to claim 1, characterized in that: and an oil scraper is arranged on the standing separation tank.
3. The polyester wastewater pretreatment device according to claim 1, characterized in that: and an alkali feeding port and a nitrogen and phosphorus nutrient solution feeding port are arranged on the adjusting tank.
4. The polyester wastewater pretreatment device according to claim 1, characterized in that: an alkali adding port is arranged on the anaerobic adjusting tank.
5. The polyester wastewater pretreatment device according to claim 1, characterized in that: the outlet of the anaerobic tank is also connected with the inlet of the anaerobic adjusting tank.
6. A method of operating a polyester wastewater pretreatment device according to any one of claims 1 to 5, characterized in that: the method comprises the following steps: the polyester wastewater is sent into a standing separation tank, so that organic pollutants in water are dissolved out from the water and float upwards; the wastewater after standing separation enters an adjusting tank, alkali is added to adjust the water quantity and the water quality until the pH is 5.5-6.5, and nitrogen and phosphorus nutrient solution is added to provide required nutrition for subsequent biochemical reaction; then the mixture enters a hydrolysis acidification pool of an acid-producing phase to hydrolyze insoluble organic matters into soluble organic matters, and macromolecular substances which are difficult to biodegrade are converted into micromolecular substances which are easy to biodegrade, so that substrates are provided for anaerobic methane bacteria; the effluent after hydrolytic acidification passes through an anaerobic adjusting tank, and the pH is adjusted to 6.6-7.4 by adjusting the water quality and the water quantity; then sending the mixture into an anaerobic tank to convert acetic acid, hydrogen, carbonic acid, formic acid and methanol into methane, carbon dioxide and new cell substances; the effluent after anaerobic degradation enters a secondary aerobic biochemical system to be discharged after reaching the standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110248403.8A CN113045112A (en) | 2021-03-05 | 2021-03-05 | Polyester wastewater pretreatment device and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110248403.8A CN113045112A (en) | 2021-03-05 | 2021-03-05 | Polyester wastewater pretreatment device and working method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113045112A true CN113045112A (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110248403.8A Withdrawn CN113045112A (en) | 2021-03-05 | 2021-03-05 | Polyester wastewater pretreatment device and working method thereof |
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| CN (1) | CN113045112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115417559A (en) * | 2022-08-29 | 2022-12-02 | 广东轻工职业技术学院 | Method for treating high-concentration industrial esterification wastewater by using microorganisms |
Citations (7)
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|---|---|---|---|---|
| US4551250A (en) * | 1983-07-26 | 1985-11-05 | Linde Aktiengesellschaft | Process for the anaerobic biological purification of wastewater |
| JPH06269797A (en) * | 1993-03-23 | 1994-09-27 | Kurita Water Ind Ltd | Treatment of waste water incorporating telephthalic acid |
| CN102491591A (en) * | 2011-12-09 | 2012-06-13 | 丁海荣 | Sewage treating and recycling system and method for high-concentration polyester slices |
| CN103570191A (en) * | 2013-10-28 | 2014-02-12 | 浙江大学 | Biochemical treatment device and method for wastewater generated in production of polyester resin |
| CN105565616A (en) * | 2016-03-04 | 2016-05-11 | 苏州苏沃特环境科技有限公司 | Technology system for treatment and reuse of polyester fiber wastewater |
| CN105668922A (en) * | 2016-01-14 | 2016-06-15 | 常州大学 | High-concentration polyester resin wastewater treatment equipment |
| CN210683524U (en) * | 2019-09-20 | 2020-06-05 | 浙江省环境工程有限公司 | Polyester wastewater advanced recycling treatment system |
-
2021
- 2021-03-05 CN CN202110248403.8A patent/CN113045112A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551250A (en) * | 1983-07-26 | 1985-11-05 | Linde Aktiengesellschaft | Process for the anaerobic biological purification of wastewater |
| JPH06269797A (en) * | 1993-03-23 | 1994-09-27 | Kurita Water Ind Ltd | Treatment of waste water incorporating telephthalic acid |
| CN102491591A (en) * | 2011-12-09 | 2012-06-13 | 丁海荣 | Sewage treating and recycling system and method for high-concentration polyester slices |
| CN103570191A (en) * | 2013-10-28 | 2014-02-12 | 浙江大学 | Biochemical treatment device and method for wastewater generated in production of polyester resin |
| CN105668922A (en) * | 2016-01-14 | 2016-06-15 | 常州大学 | High-concentration polyester resin wastewater treatment equipment |
| CN105565616A (en) * | 2016-03-04 | 2016-05-11 | 苏州苏沃特环境科技有限公司 | Technology system for treatment and reuse of polyester fiber wastewater |
| CN210683524U (en) * | 2019-09-20 | 2020-06-05 | 浙江省环境工程有限公司 | Polyester wastewater advanced recycling treatment system |
Non-Patent Citations (1)
| Title |
|---|
| 田爱军;王水;刘伟;柏立森;高鸣;: "气提-厌氧-接触氧化-气浮工艺处理聚酯废水", 环境科技, vol. 23, no. 01, pages 40 - 42 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115417559A (en) * | 2022-08-29 | 2022-12-02 | 广东轻工职业技术学院 | Method for treating high-concentration industrial esterification wastewater by using microorganisms |
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