CN108423924A - A kind of processing method of the waste water of polyethylene glycol containing high concentration - Google Patents
A kind of processing method of the waste water of polyethylene glycol containing high concentration Download PDFInfo
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- CN108423924A CN108423924A CN201810178975.1A CN201810178975A CN108423924A CN 108423924 A CN108423924 A CN 108423924A CN 201810178975 A CN201810178975 A CN 201810178975A CN 108423924 A CN108423924 A CN 108423924A
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- reaction
- waste water
- polyethylene glycol
- processing method
- containing high
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- 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
-
- 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
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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)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a kind of processing methods of the waste water of polyethylene glycol containing high concentration, include the following steps：(1) polyethylene glycol waste water is placed in high-temperature high-voltage reaction device and reacts a period of time；(2) it will be passed through anaerobic organism reaction unit after step (1) raffinate obtained by the reaction and low concentration wastewater mixed diluting and carries out anaerobic bio-treated；(3) it will be passed through Aerobic biological process device after step (2) raffinate obtained by the reaction and low concentration wastewater mixed diluting and carries out Aerobic biological process.The processing method of the waste water of polyethylene glycol containing high concentration provided by the invention, it is simple for process, there is good wastewater treatment efficiency.
Description
Technical field
The present invention relates to technical field of waste water processing, more particularly to a kind of processing side of the waste water of polyethylene glycol containing high concentration
Method.
Background technology
It is raw material that polyethylene glycol is relatively mostly used during the industry productions such as pharmacy, chemical industry, and the waste water of part industry discharge is poly-
For ethylene glycol content up to 25~30%, waste water COD concentration may be up to 40~500,000 mg/L, and salinity (fluorine, chlorine etc.) 10~12% gathers
Ethylene glycol COD value be 1.6~1.8g/g, BOD values be 0~0.02g/g, B/C ≈ 0, it is hardly biodegradable.It is directly discharged into water
Body (surface water COD10~25mg/L), will cause great environmental pollution.
The country is concentrated mainly on its application, few reports handled about it to the research of polyethylene glycol.This is useless at present
There are two types of the main treatment process of water：
(1) high concentration polyethylene glycol is mixed into low concentration wastewater, biological treatment is carried out after being diluted to a certain concentration；
(2) it uses natural gas, diesel oil etc. combustion-supporting, high-concentration waste water is burned.
Using method (1), a large amount of low concentration wastewater is needed, and polyethylene glycol is not fully converted to small molecule object
Matter, the conventional indexs such as COD are likely to be breached emission request.But it discharges water to processing heel row and carries out characterization factor comparison, polyethylene glycol is dense
Degree still may be exceeded, not up to administers purpose.
Using method (2), since salt content is high in waste water, fluorine, chloride ion corrosion are strong, to burning main equipment material etc.
It is required that it is high, and there may be the pollutants such as NOx, SOx, HF, HCl, stringent exhaust gas rows after the burnings such as N, S, F, CI in waste water
Requirement is put, the investment of mating waste gas treatment equipment may be burn main equipment investment 100%~150% so that entire
Processing system investment is high.And whole system equipment is various, operation, management cost are high.
Invention content
It is simple for process it is an object of the present invention to provide a kind of processing method of the waste water of polyethylene glycol containing high concentration, it can remove
Pollutant in high concentration polyethylene glycol waste water, reduces the discharge of pollutant.
Based on the above issues, technical solution provided by the invention is：
A kind of processing method of the waste water of polyethylene glycol containing high concentration, includes the following steps：
(1) polyethylene glycol waste water is placed in high-temperature high-voltage reaction device and reacts a period of time；
(2) anaerobic organism reaction unit will be passed through after step (1) raffinate obtained by the reaction and low concentration wastewater mixed diluting
Carry out anaerobic bio-treated；
(3) Aerobic biological process device will be passed through after step (2) raffinate obtained by the reaction and low concentration wastewater mixed diluting
Carry out Aerobic biological process.
In some embodiments wherein, reaction temperature is 220~340 DEG C in the step (1), and reaction pressure is
12.0~18.0MPa, reaction time are 0.5~1.0h.
In some embodiments wherein, reaction temperature is 280 DEG C in the step (1), and reaction pressure is
15.3MPa, reaction time 1h.
In some embodiments wherein, the COD that anaerobic organism reaction unit waste water is entered in the step (2) is
7000~10000mg/L, hydraulic detention time are 72~120h.
In some embodiments wherein, the COD that aerobe reaction device waste water is entered in the step (3) is
1500~2500mg/L, hydraulic detention time are 48~96h.
Compared with prior art, it is an advantage of the invention that：
Polyethylene glycol waste water is placed in high temperature high pressure device and reacts a period of time by 1, technical solution using the present invention,
Polyethylene glycol is converted to the substance of small-molecular-weight, improves the biodegradability of waste water, improves subsequent biological treatment effluent quality；
2, technical solution using the present invention avoids the secondary pollutions such as NOx, SOx, HF, HCl of incinerating method generation；
3, technical solution using the present invention, the process is simple, and reaction unit takes up an area less, and operational administrative is simple, people
Member's less investment, reduces processing cost.
Specific implementation mode
Said program is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating
The present invention and be not limited to limit the scope of the invention.The implementation condition used in embodiment can be done according to the condition of specific producer
Further adjustment, the implementation condition being not specified is usually the condition in routine experiment.
A kind of processing method of the waste water of polyethylene glycol containing high concentration, includes the following steps：
(1) by polyethylene glycol waste water be placed in high-temperature high-voltage reaction device react a period of time, reaction temperature be 220~
340 DEG C, reaction pressure is 12.0~18.0MPa, and the reaction time is 0.5~1.0h, and preferred reaction temperature is 280 DEG C, reaction
Pressure is 15.3MPa, reaction time 1h；
(2) step (1) raffinate obtained by the reaction is passed through regulating reservoir regulating water quality water, with low concentration wastewater mixed diluting
After be passed through anaerobic organism reaction unit carry out anaerobic bio-treated, into anaerobic organism reaction unit waste water COD be 7000~
10000mg/L, residence time of the waste water in anaerobic organism reaction unit are 72~120h；
(3) step (2) raffinate obtained by the reaction is passed through regulating reservoir regulating water quality water, with low concentration wastewater mixed diluting
After be passed through Aerobic biological process device carry out Aerobic biological process, into Aerobic biological process device waste water COD be 1500~
2500mg/L, residence time of the waste water in aerobe reaction device are 48~96h.
By taking polyethylene glycol 400 waste water as an example, the polyethyleneglycol content of the waste water is 24%, COD 398450mg/L, saliferous
Amount is 11%.
Polyethylene glycol waste water is placed in high-temperature high-pressure reaction kettle by the first step, high-temperature high-voltage reaction, in differential responses temperature
It is reacted under degree, reaction pressure, specific implementation and effluent quality index are shown in Table 1：
1 polyethylene glycol waste water indicator reaction in high temperature high pressure device of table
COD removal rates change apparent between 240~340 DEG C of temperature as can be seen from Table 1, and temperature is higher, removal rate
It is higher.Temperature at 240 DEG C removal rate in 66% or so, 280 DEG C of removal rate 90% or so, in view of running cost in Practical Project
With and the considerations of equipment investment, it is preferred that temperature is controlled at 280 DEG C or so.
Second step, anaerobic organism reaction, by under the conditions of 280 DEG C, 15.3Mpa react 1h reaction residue with it is other low dense
It is 8000mg/L to spend waste water mixed diluting to COD, is passed through in anaerobic reaction device and carries out anaerobic reaction, waste water is filled in anaerobic reaction
Hydraulic detention time in setting is 96h, and reaction water outlet COD is 3200mg/L.
Third walks, aerobe reaction, the raffinate that anaerobic reaction is obtained and other low concentration wastewater mixed dilutings to COD
For 2000mg/L, it is passed through in anaerobic reaction device and carries out anaerobic reaction, hydraulic detention time of the waste water in aerobic reaction device
For 72h, reaction water outlet COD is 180mg/L.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Member cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent transformation or modification that Spirit Essence is done, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of processing method of the waste water of polyethylene glycol containing high concentration, it is characterised in that include the following steps：
(1) polyethylene glycol waste water is placed in high-temperature high-voltage reaction device and reacts a period of time；
(2) anaerobic organism reaction unit will be passed through after step (1) raffinate obtained by the reaction and low concentration wastewater mixed diluting to carry out
Anaerobic bio-treated；
(3) Aerobic biological process device will be passed through after step (2) raffinate obtained by the reaction and low concentration wastewater mixed diluting to carry out
Aerobic biological process.
2. the processing method of the waste water of polyethylene glycol containing high concentration according to claim 1, it is characterised in that：The step
(1) reaction temperature is 220~340 DEG C in, and reaction pressure is 12.0~18.0MPa, and the reaction time is 0.5~1.0h.
3. the processing method of the waste water of polyethylene glycol containing high concentration according to claim 2, it is characterised in that：The step
(1) reaction temperature is 280 DEG C, reaction pressure 15.3MPa, reaction time 1h in.
4. the processing method of the waste water of polyethylene glycol containing high concentration according to claim 1, it is characterised in that：The step
(2) COD for entering anaerobic organism reaction unit waste water in is 7000~10000mg/L, and hydraulic detention time is 72~120h.
5. the processing method of the waste water of polyethylene glycol containing high concentration according to claim 1, it is characterised in that：The step
(3) COD for entering aerobe reaction device waste water in is 1500~2500mg/L, and hydraulic detention time is 48~96h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810178975.1A CN108423924A (en) | 2018-03-05 | 2018-03-05 | A kind of processing method of the waste water of polyethylene glycol containing high concentration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810178975.1A CN108423924A (en) | 2018-03-05 | 2018-03-05 | A kind of processing method of the waste water of polyethylene glycol containing high concentration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114853166A (en) * | 2022-05-23 | 2022-08-05 | 齐鲁工业大学 | Method for treating wastewater containing high-concentration polyethylene glycol PEG-10000 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2419863C2 (en) * | 1973-04-24 | 1986-05-15 | Sterling Drug Inc., New York, N.Y. | Wet air oxidation process for sewage sludge and sludge from domestic sewage treatment plants |
| CN1188776A (en) * | 1997-01-20 | 1998-07-29 | 株式会社神户制钢所 | Decomposition method and device for discarded material |
| CN104355512A (en) * | 2014-10-29 | 2015-02-18 | 同济大学 | Subcritical hydrothermal treatment-based efficient recycling treatment process for sludge |
-
2018
- 2018-03-05 CN CN201810178975.1A patent/CN108423924A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2419863C2 (en) * | 1973-04-24 | 1986-05-15 | Sterling Drug Inc., New York, N.Y. | Wet air oxidation process for sewage sludge and sludge from domestic sewage treatment plants |
| CN1188776A (en) * | 1997-01-20 | 1998-07-29 | 株式会社神户制钢所 | Decomposition method and device for discarded material |
| CN104355512A (en) * | 2014-10-29 | 2015-02-18 | 同济大学 | Subcritical hydrothermal treatment-based efficient recycling treatment process for sludge |
Non-Patent Citations (2)
| Title |
|---|
| DIONISSIOS M,ET AL.: "Wet air oxidation of polyethylene glycols;Mechanisms,intermediates and implications for integrated chemical-biological wastewater treatment.", 《CHEMICAL ENGINEERING SCIENCE》 * |
| 王晶: "Fenton/UASB/生化工艺处理衣物洗涤用芳香颗粒废水", 《中国给水排水》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114853166A (en) * | 2022-05-23 | 2022-08-05 | 齐鲁工业大学 | Method for treating wastewater containing high-concentration polyethylene glycol PEG-10000 |
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Application publication date: 20180821 |