CN109467273A - A kind of polyester organic peroxide wastewater treatment method - Google Patents
A kind of polyester organic peroxide wastewater treatment method Download PDFInfo
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- CN109467273A CN109467273A CN201811565005.3A CN201811565005A CN109467273A CN 109467273 A CN109467273 A CN 109467273A CN 201811565005 A CN201811565005 A CN 201811565005A CN 109467273 A CN109467273 A CN 109467273A
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- waste water
- organic peroxide
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- wastewater treatment
- treatment method
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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
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/16—Purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/14—Magnesium hydroxide
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/22—Treatment of water, waste water, or sewage by freezing
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- 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
-
- 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 discloses a kind of polyester organic peroxide wastewater treatment methods, comprising the following steps: waste water A, is squeezed into inclined plate sedimentation device stirring neutralization region by metering pump；B, the sodium sulfate salt in three-effect evaporation and condensation waste water；C, freezing and crystallizing extracts sodium sulphate in waste water；D, collecting pit waste water enters hydrolysis acidification pool；E, to waste water aerobic biochemical treatment；F, sloping plate deposition generation magnesium hydroxide, which is squeezed into, carries out filters pressing in plate and frame filter press；G, the waste liquid that refrigerated centrifuge generates carries out triple effect evaporation, the invention reside in provide a kind of exploitation of polyester organic peroxide wastewater processing technology, the technology has stable, good waste water treatment effect, salt index can qualified discharge and salt the characteristics of capable of comprehensively utilizing, economic benefit is significant with social benefit.
Description
Technical field
The present invention relates to technical field at polyester organic peroxide waste water, specially a kind of polyester organic peroxide is useless
Method for treating water.
Background technique
Organic peroxide is a kind of extraordinary chemical products with extensive use in fine chemistry industry, and kind and property are straight
The trade mark, property and the application field for determining target material are connect, can be used as the initiator of synthetic resin, the vulcanizing agent of rubber, resin
Modifying agent and organic synthesis oxidant.It had been widely used at present in polyethylene, polypropylene, polyvinyl chloride, polystyrene, gathered
In the compound probabilities such as ester and other industry.In general, product is primarily adapted for use in the big synthetic material of polymer etc. three, rubber work
Industry, automobile industry, daily necessities industry, building material industry, fuel oil additive, medicine intermediate, solar panel etc..It is organic
Peroxide product point can be divided into solid, semisolid and three kinds of liquid by kenel, and the product 90% of the project is lipid peroxidation
Object.It is divided into room temperature and cryogenic product according to storage temperature；Solvent type and water and milk solution-type can be divided into according to solvent difference.
Currently used waste water treatment process mainly has coagulating sedimentation, hydrolysis acidification, A/O, air bearing, catalytic ozonation
Deng.Although these techniques technique in organic peroxide wastewater treatment is highly developed, as environmental requirement is got in recent years
Come stringenter, especially total salt discharge standard is increasingly stringenter, using traditional handicraft, is unable to reach salt index qualified discharge
Purpose.Currently, it is domestic fewer and fewer to the technical study of brine waste salt emission compliance and technological development, and salt reuse
Case be even more almost without.For this purpose, being that the sector is promoted to develop to the exploitation of polyester organic peroxide wastewater processing technology
One of important technology can effectively ensure the qualified discharge of wastewater through organic matter and salt, and realize the resource utilization of salt.
Summary of the invention
The purpose of the present invention is to provide a kind of polyester organic peroxide wastewater treatment methods, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the invention provides the following technical scheme: a kind of polyester organic peroxide wastewater treatment side
Method, it is characterised in that: the following steps are included:
A, waste water is squeezed into inclined plate sedimentation device stirring by metering pump and neutralizes region；
B, the sodium sulfate salt in three-effect evaporation and condensation waste water；
C, freezing and crystallizing extracts sodium sulphate in waste water；
D, collecting pit waste water enters hydrolysis acidification pool；
E, to waste water aerobic biochemical treatment；
F, sloping plate deposition generation magnesium hydroxide, which is squeezed into, carries out filters pressing in plate and frame filter press；
G, the waste liquid that refrigerated centrifuge generates carries out triple effect evaporation.
Preferably, described that waste water is squeezed by metering pump by inclined plate sedimentation device stirring neutralization region according to step A, it neutralizes
In the process, alkali is 60 turns/min as neutralizer, stirring rate, and pH is adjusted to 8.0~8.5, and waste water flows into sloping plate deposition after neutralization
Settling zone, sloping plate deposition district surface loading are 0.3~0.5m3/m2h, and magnesium ion in waste water is carried out precipitation process, supernatant
Waste water enters triple-effect evaporation plant and is further processed.
Preferably, it is described according to step B triple effect evaporation temperature be 50~60 DEG C, evacuated pressure be -0.08~-
0.12Mpa steams fraction and enters wastewater collection pond collection, and concentrate enters concentrating liquid pool collection, and collecting pit waste water carries out next
Biochemical treatment is walked, concentrate waste water carries out next step freezing processing.
Preferably, it is described according to step C freezing and crystallizing main function be extract waste water in sodium sulphate, cryogenic temperature 5.0
~6.0 DEG C, refrigerant is ethylene glycol, and 8.0~10.0h of freezing and crystallizing time freezes precipitation sodium sulphate and is centrifuged, from
Scheming revolving speed is 8000~30000r/min.
Preferably, the hydrolysis and acidification for passing through microorganism according to step D, macromolecular substances in waste water are converted
At small-molecule substance.Hydrolysis acidification pool dissolved oxygen is 0.2~0.4mg/L, retention time of sewage 48h, in hydrolysis acidification pool pond
Temperature is 25.0~35.0 DEG C, and hydrolysis acidification pool processed waste water carries out aerobic treatment.
Preferably, described be 25%~35%, DO according to step E waste water SV30 is 2.5~3.5mg/L, and temperature is 25~35
DEG C, waste water hydraulic detention time is 48~52h, and MLSS is 4500~8000mg/L, and aerobic biochemical can effectively reduce waste water
Middle organic concentration, processed waste water can discharge.
Preferably, it is described according to step F filter cake moisture content be 0-50%, plate and frame filter press operating pressure be 460~
630Kpa, the operation cycle is 2600s~3200s, and in filter cake outside moisture removal, magnesium hydroxide purity is 99%.
Preferably, it is described according to step G refrigerated centrifuge generate waste liquid carry out triple effect evaporation, triple effect evaporation temperature be 50~
60 DEG C, evacuated pressure is -0.08~-0.12Mpa, steams fraction and enters wastewater collection pond collection, concentrate enters concentrate
Pond is collected, and collecting pit waste water carries out next step biochemical treatment, and concentrate waste water carries out next step freezing processing.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention precipitates magnesium hydroxide using sloping plate deposition technique, does not introduce other impurities, magnesium hydroxide purity
It is high；
(2) concentration, the mature technology are carried out to waste water using triple effect evaporation, and can be realized automation control；
(3) plate compression magnesium hydroxide is used, it is low to be press-filtered out magnesium hydroxide moisture content, is convenient for reuse；
(4) sodium sulphate, sodium sulphate purity is high, substantially without other impurities are recycled using freezing and crystallizing centrifuging process；
(5) magnesium hydroxide and sodium sulphate generated in production process is recycled, and the yield of dangerous waste can be effectively reduced, warp
Benefit of helping and social benefit are significant；
(6) the characteristics of technique has easy to operate, and operational effect is stablized, small investment.
Detailed description of the invention
Fig. 1 is polyester organic peroxide wastewater treatment process figure of the present invention.
Specific embodiment
Lower the following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Referring to Fig. 1, the invention provides the following technical scheme: a kind of polyester organic peroxide wastewater treatment method,
It is characterized in that: the following steps are included:
A, waste water is squeezed into inclined plate sedimentation device stirring by metering pump and neutralizes region；
B, the sodium sulfate salt in three-effect evaporation and condensation waste water；
C, freezing and crystallizing extracts sodium sulphate in waste water；
D, collecting pit waste water enters hydrolysis acidification pool；
E, to waste water aerobic biochemical treatment；
F, sloping plate deposition generation magnesium hydroxide, which is squeezed into, carries out filters pressing in plate and frame filter press；
G, the waste liquid that refrigerated centrifuge generates carries out triple effect evaporation.
Waste water is squeezed into inclined plate sedimentation device stirring by metering pump and neutralizes region, in N-process, alkali as neutralizer,
Stirring rate is 60 turns/min, and pH is adjusted to 8.0~8.5, and waste water flows into sloping plate deposition settling zone, sloping plate deposition district surface after neutralization
Load is 0.3~0.5m3/m2h, magnesium ion in waste water is carried out precipitation process, supernatant effluent enters triple-effect evaporation plant
It is further processed.
When carrying out triple effect evaporation, the temperature range of triple effect evaporation is 50~60 DEG C, and evacuated pressure is -0.08
~-0.12Mpa steams fraction and enters wastewater collection pond collection, and concentrate enters concentrating liquid pool collection, and collecting pit waste water carries out down
One step biochemical treatment, concentrate waste water carry out next step freezing processing.
When freezing and crystallizing extracts sodium sulphate in waste water, cryogenic temperature is 5.0~6.0 DEG C, and refrigerant is ethylene glycol,
8.0~10.0h of freezing and crystallizing time, freezing are precipitated sodium sulphate and are centrifuged, and centrifuge speed is 8000~30000r/
min。
By the hydrolysis and acidification of microorganism, macromolecular substances in waste water are converted to small-molecule substance.Hydrolysis acid
Change pond dissolved oxygen is 0.2~0.4mg/L, retention time of sewage 48h, and temperature is 25.0~35.0 DEG C in hydrolysis acidification pool pond,
Hydrolysis acidification pool processed waste water carries out aerobic treatment.
Waste water SV30 is that 25%~35%, DO is 2.5~3.5mg/L, and temperature is 25~35 DEG C, and waste water hydraulic detention time is
48~52h, MLSS are 4500~8000mg/L, and aerobic biochemical can effectively reduce organic concentration in waste water, are given up after processing
Water can discharge.
Filter cake moisture content is 0-50%, and plate and frame filter press operating pressure is 460~630Kpa, the operation cycle be 2600s~
3200s, in filter cake outside moisture removal, magnesium hydroxide purity is 99%.
Refrigerated centrifuge generate waste liquid carry out triple effect evaporation, triple effect evaporation temperature be 50~60 DEG C, evacuated pressure be-
0.08~-0.12Mpa, steam fraction enter wastewater collection pond collection, concentrate enter concentrating liquid pool collection, collecting pit waste water into
Row next step biochemical treatment, concentrate waste water carry out next step freezing processing.
Be collected pond waste water enter hydrolysis acidification pool with to waste water aerobic biochemical treatment when, if encountering waste water
When sludge character is bad or biochemical trait is deteriorated, nutritive salt is added into waste water, nutritive salt is glucose, urea, glucose
Additive amount is 200ppm~300ppm, and the additive amount of urea is 80ppm~90ppm, can be into according to wastewater biochemical effect difference
Row appropriate adjustment, adjusting range are that glucose maximum additive amount is 1000ppm, and urea maximum additive amount is 100ppm.
Embodiment:
Organic peroxide waste water 50t is squeezed into stirring inclined plate sedimentation device using chemical pump, pH is carried out using sodium hydroxide
It adjusts, pH is adjusted to 8.0, and waste water enters sloping plate deposition, sedimentation time 12h, and surface loading is 0.3~0.5m3/m2h, precipitating
Sediment carries out filters pressing using plate and frame filter press afterwards, generates waste water 42t, solid 13.5t after precipitating filters pressing, waste water and heavy after filters pressing
Shallow lake supernatant is squeezed into triple-effect evaporation plant, and solid is magnesium hydroxide, is transported to workshop recycling.
42 tons of waste water is evaporated concentration, wherein evaporating temperature is 53 DEG C, and evaporated fraction is collected, evaporation
Concentrate flow into refrigerating plant carry out freezing and crystallizing, freezing and crystallizing temperature be 5.5 DEG C, crystallization waste water enter centrifuge carry out from
The heart, centrifuge speed 11000r/min, evaporation and centrifuge centrifugation generate waste water water be waste water 40.2t, solid 1.7t,
Solid is solid sodium sulfate, and solid is transported to workshop reuse.
The waste water that evaporation and centrifugation generate is entered into hydrolysis acidification pool and carries out biochemical treatment, hydrolysis acidification pool dissolved oxygen DO is
0.54mg/L, waste water hydraulic detention time are 40h.
Waste water carries out Aerobic Process for Treatment after hydrolysis acidification, and waste water dissolved oxygen is 3.4mg/L, and waste water hydraulic detention time is 50h,
Wherein MLSS control amount is 5200mg/L, and SV30 35%, waste water temperature constant temperature is to 32 DEG C, detection water outlet COD and ammonia nitrogen, water outlet
COD stablizes in 120~150mg/L, and ammonia nitrogen is stablized in 10~16mg/L.
The invention reside in a kind of exploitation of polyester organic peroxide wastewater processing technology is provided, which has operation steady
It is fixed, good waste water treatment effect, salt index can qualified discharge and salt the characteristics of capable of comprehensively utilizing, economic benefit and society imitate
It is beneficial significant.
The beneficial effects of the present invention are:
(1) present invention precipitates magnesium hydroxide using sloping plate deposition technique, does not introduce other impurities, magnesium hydroxide purity
It is high；
(2) concentration, the mature technology are carried out to waste water using triple effect evaporation, and can be realized automation control；
(3) plate compression magnesium hydroxide is used, it is low to be press-filtered out magnesium hydroxide moisture content, is convenient for reuse；
(4) sodium sulphate, sodium sulphate purity is high, substantially without other impurities are recycled using freezing and crystallizing centrifuging process；
(5) magnesium hydroxide and sodium sulphate generated in production process is recycled, and the yield of dangerous waste can be effectively reduced, warp
Benefit of helping and social benefit are significant；
(6) the characteristics of technique has easy to operate, and operational effect is stablized, small investment.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of polyester organic peroxide wastewater treatment method, it is characterised in that: the following steps are included:
A, waste water is squeezed into inclined plate sedimentation device stirring by metering pump and neutralizes region；
B, the sodium sulfate salt in three-effect evaporation and condensation waste water；
C, freezing and crystallizing extracts sodium sulphate in waste water；
D, collecting pit waste water enters hydrolysis acidification pool；
E, to waste water aerobic biochemical treatment；
F, sloping plate deposition generation magnesium hydroxide, which is squeezed into, carries out filters pressing in plate and frame filter press；
G, the waste liquid that refrigerated centrifuge generates carries out triple effect evaporation.
2. a kind of polyester organic peroxide wastewater treatment method according to claim 1, it is characterised in that: the basis
Waste water is squeezed into inclined plate sedimentation device stirring by metering pump and neutralizes region by step A, and in N-process, alkali is stirred as neutralizer
Mixing rate is 60 turns/min, and pH is adjusted to 8.0~8.5, and waste water flows into sloping plate deposition settling zone after neutralization, and sloping plate deposition district surface is negative
Lotus be 0.3~0.5m3/m2h, by waste water magnesium ion carry out precipitation process, supernatant effluent enter triple-effect evaporation plant into
Row is handled in next step.
3. a kind of polyester organic peroxide wastewater treatment method according to claim 1, it is characterised in that: the basis
Step B triple effect evaporation temperature is 50~60 DEG C, and evacuated pressure is -0.08~-0.12Mpa, steams fraction and enters wastewater collection
Pond is collected, and concentrate enters concentrating liquid pool collection, and collecting pit waste water carries out next step biochemical treatment, and concentrate waste water carries out next
Walk freezing processing.
4. a kind of polyester organic peroxide wastewater treatment method according to claim 1, it is characterised in that: the basis
Step C freezing and crystallizing main function is to extract sodium sulphate in waste water, and cryogenic temperature is 5.0~6.0 DEG C, and refrigerant is second two
Alcohol, 8.0~10.0h of freezing and crystallizing time, freezing be precipitated sodium sulphate be centrifuged, centrifuge speed be 8000~
30000r/min。
5. a kind of polyester organic peroxide wastewater treatment method according to claim 1, it is characterised in that: the basis
Step D passes through the hydrolysis and acidification of microorganism, and macromolecular substances in waste water are converted to small-molecule substance.
6. hydrolysis acidification pool dissolved oxygen is 0.2~0.4mg/L, retention time of sewage 48h, temperature is in hydrolysis acidification pool pond
25.0~35.0 DEG C, hydrolysis acidification pool processed waste water carries out aerobic treatment.
7. a kind of polyester organic peroxide wastewater treatment method according to claim 1, it is characterised in that: the basis
Step E waste water SV30 is that 25%~35%, DO is 2.5~3.5mg/L, and temperature is 25~35 DEG C, and waste water hydraulic detention time is 48
~52h, MLSS are 4500~8000mg/L, and aerobic biochemical can effectively reduce organic concentration in waste water, processed waste water
It can discharge.
8. a kind of polyester organic peroxide wastewater treatment method according to claim 1, it is characterised in that: the basis
Step F filter cake moisture content be 0-50%, plate and frame filter press operating pressure be 460~630Kpa, the operation cycle be 2600s~
3200s, in filter cake outside moisture removal, magnesium hydroxide purity is 99%.
9. a kind of polyester organic peroxide wastewater treatment method according to claim 1, it is characterised in that: the basis
The waste liquid that step G refrigerated centrifuge generates carries out triple effect evaporation, and triple effect evaporation temperature is 50~60 DEG C, and evacuated pressure is -0.08
~-0.12Mpa steams fraction and enters wastewater collection pond collection, and concentrate enters concentrating liquid pool collection, and collecting pit waste water carries out down
One step biochemical treatment, concentrate waste water carry out next step freezing processing.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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