CN107176755A - A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method - Google Patents
A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method Download PDFInfo
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- CN107176755A CN107176755A CN201710419617.0A CN201710419617A CN107176755A CN 107176755 A CN107176755 A CN 107176755A CN 201710419617 A CN201710419617 A CN 201710419617A CN 107176755 A CN107176755 A CN 107176755A
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- Prior art keywords
- polyvinyl chloride
- chloride centrifugation
- liquid
- combined pretreatment
- pretreatment 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
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2001/007—Processes including a sedimentation step
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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
- 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
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion 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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method, polyvinyl chloride centrifugation mother liquid is sufficiently pre-processed by the series of process step of the present invention, the biodegradability of centrifuge mother liquor can be reduced, solve the problem of fenestra is often blocked in follow-up membrane treatment process, improve operating efficiency, centrifuge mother liquor after treatment can be re-used into production by water circulation simultaneously, reduce production cost.
Description
Technical field
The present invention relates to waste water of PVC production processing technology field, more particularly to a kind of polyvinyl chloride centrifugation mother liquid are many
Method combined pretreatment method.
Background technology
Polyvinyl chloride（PVC）It is one of main general-purpose plastics kind.It is because with good physics and mechanical performance
Production construction material, textile industry processing, papermaking and paper conversion, packaging material are widely used in by people, emulsification is also acted as
Stabilizer.The waste water produced in production polyvinyl chloride polymerization workshop section is mainly centrifugal mother liquor waste water.Centrifugal mother liquor waste water is because of polymerization
During the requirement of different polymerization degree reaction system reaction temperature it is different, so the temperature of the centrifuge mother liquor of discharge is general at 60 DEG C
Left and right；And the organic matter in waste water is mainly residue and resin particle of each analog assistant added during polymerisation etc.,
These auxiliary agents are mainly water soluble organic polymer material, surfactant, peroxide, a- methyl styrenes etc., these things
Matter all has toxicity and difficult for biological degradation；Each analog assistant is remained in polyvinyl chloride centrifugation mother liquid waste water and some solids suspend
Thing, if directly handled using membrane processing method, it may appear that block the phenomenon of filter opening.Traditional PVC centrifugation mother liquor processing side
Method mainly has physico-chemical process and the major class of biochemical process two.Materialization technology includes foamet, evaporation concentration method, chemical coagulation method, super
Filter method, Coagulation Method etc..Biochemical process is risen in the 70's of 20th century, including biology mainly using activated sludge process as representative
Embrane method, Aerobic-anaerobic method etc..
Above-mentioned several processing methods and technique, in independent processing, or salinity, the organic matter removal in water be not thorough,
Or can not come into operation in actual production the problems such as due to operating cost.Even if the technology that can be come into operation, the water after processing can only also be used
Make the primary reuse such as recirculated cooling water moisturizing, it is impossible to reach the maximum value of mother liquor Water circulation.And due to polyvinyl chloride centrifugation
Mother liquor bio-degradable is low, and containing the polymer substance that film can be caused to block, it is therefore necessary to using before membrane treatment process
Pre-treatment is carried out to waste water, the biodegradability of waste water is improved and decomposes or remove the high molecular polymer of residual, it is follow-up to ensure
What is handled is smoothed out.
The content of the invention
The object of the invention is exactly to join to make up the defect of prior art there is provided a kind of polyvinyl chloride centrifugation mother liquid multi-method
Close preprocess method.
The present invention is achieved by the following technical solutions：
A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method, including step in detail below：
（1）Centrifuge mother liquor is exchanged heat by cooling tower, the temperature of centrifuge mother liquor is down to less than 35 DEG C, then passes to and carry
In the regulation tank of preaerator, it is 30-50L/h to control draft speed, is hydrolyzed after carrying out water quality and quantity mixing at acidifying
Reason；
（2）By step（1）Handled in contact-oxidation pool of the centrifuge mother liquor feeding with aerator after processing, control is logical
Gas velocity degree is 20-40L/h, then by sedimentation basin, adds appropriate reagent and is stirred 30-40 minutes with 300-400 revs/min of speed
2-3 hours are stood afterwards, then carries out separation of solid and liquid；
（3）Liquid after separation of solid and liquid is transferred in ozone generator, oxygen cylinder is opened and is aerated, control the draft speed to be
60-80L/h, ozone generator is opened after oxygen flow is stable and knocks down appropriate ozone, ventilation 18-20 minutes, ventilation knot simultaneously
Ozone generator is closed after standing 10-15 minutes after beam and oxygen cylinder terminates reaction.
A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method, step（1）Described hydrolysis acidification processing
Concrete mode is to be stirred 4-10 hours with 120-150 revs/min of agitator.
A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method, step（2）It is described in contact-oxidation pool
The time handled is 6-10 hours.
A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method, step（2）Described reagent is polyaluminium
Aluminium and polyacrylamide, and dosage is that 1L centrifuge mother liquors add 0.08-0.1g aluminium polychlorides and 8-10mg polyacrylamides
Amine.
A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method, step（2）Described separation of solid and liquid it is specific
Mode carries out separation of solid and liquid to be passed through after the supernatant after standing is precipitated by flat flow in quartz sand filtration post.
A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method, step（3）The dosage of described ozone is
1L centrifuge mother liquors add 2-3g ozone.
It is an advantage of the invention that：The present invention is first by polyvinyl chloride centrifugation mother liquid by cooling down tower cooler, and then input is adjusted
Save in pond, can realize that water quality is effectively mixed with water under aeration condition, stripping can be carried out to part pollutant in water；Again
Solid-liquid point is carried out by adding a small amount of coagulant after the hydrolysis acidification stage and contact-oxidation pool stage that are sufficiently stirred for aeration
From so that the material such as macromolecule in waste water after separation of solid and liquid by removing, and this series of technique is easy to control in actual production
System, can remove most of polymer substance and other magazines, and finally by ozone generator, the hydroxyl of ozone decomposed generation is certainly
It is strong by base oxidisability, organic matter remaining in waste water can fully be degraded, be finally reached the purpose of purification of water quality, and for once
Property input, new pollution will not be produced.
Polyvinyl chloride centrifugation mother liquid is sufficiently pre-processed by the series of process step of the present invention, can be reduced
The biodegradability of centrifuge mother liquor, solves the problem of fenestra is often blocked in follow-up membrane treatment process, improves operating efficiency,
Centrifuge mother liquor after treatment can be re-used into production by water circulation simultaneously, reduce production cost.
Embodiment
A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method, including step in detail below：
（1）Centrifuge mother liquor is exchanged heat by cooling tower, the temperature of centrifuge mother liquor is down to less than 35 DEG C, then passes to and carry
In the regulation tank of preaerator, it is 30L/h to control draft speed, and acidification is hydrolyzed after carrying out water quality and quantity mixing,
Stirred 4 hours with 120 revs/min of agitator；
（2）By step（1）Handled in contact-oxidation pool of the centrifuge mother liquor feeding with aerator after processing, control is logical
Gas velocity degree is 20L/h, is reacted 6 hours, then by sedimentation basin, and 0.08g aluminium polychlorides and 8mg are added with 1L centrifuge mother liquors
The addition of polyacrylamide is added in mother liquor, 2 hours is stood after being stirred 30 minutes with 300 revs/min of speed, after standing
Supernatant precipitated by flat flow after be passed through in quartz sand filtration post and carry out separation of solid and liquid；
（3）Liquid after separation of solid and liquid is transferred in ozone generator, oxygen cylinder is opened and is aerated, control the draft speed to be
80L/h, ozone generator is opened after oxygen flow is stable and is knocked down simultaneously with the dosage of 1L centrifuge mother liquors addition 2.37g ozone
Appropriate ozone, is ventilated 20 minutes, and ozone generator is closed in ventilation after standing 10 minutes after terminating and oxygen cylinder terminates reaction.
Claims (6)
1. a kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method, it is characterised in that including step in detail below：
（1）Centrifuge mother liquor is exchanged heat by cooling tower, the temperature of centrifuge mother liquor is down to less than 35 DEG C, then passes to and carry
In the regulation tank of preaerator, it is 30-50L/h to control draft speed, is hydrolyzed after carrying out water quality and quantity mixing at acidifying
Reason；
（2）By step（1）Handled in contact-oxidation pool of the centrifuge mother liquor feeding with aerator after processing, control is logical
Gas velocity degree is 20-40L/h, then by sedimentation basin, adds appropriate reagent and is stirred 30-40 minutes with 300-400 revs/min of speed
2-3 hours are stood afterwards, then carries out separation of solid and liquid；
（3）Liquid after separation of solid and liquid is transferred in ozone generator, oxygen cylinder is opened and is aerated, control the draft speed to be
60-80L/h, ozone generator is opened after oxygen flow is stable and knocks down appropriate ozone, ventilation 18-20 minutes, ventilation knot simultaneously
Ozone generator is closed after standing 10-15 minutes after beam and oxygen cylinder terminates reaction.
2. a kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method according to claim 1, it is characterised in that
Step（1）The concrete mode of described hydrolysis acidification processing is to be stirred 4-10 hours with 120-150 revs/min of agitator.
3. a kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method according to claim 1, it is characterised in that
Step（2）The described time handled in contact-oxidation pool is 6-10 hours.
4. a kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method according to claim 1, it is characterised in that
Step（2）Described reagent is aluminium polychloride and polyacrylamide, and dosage is that 1L centrifuge mother liquors addition 0.08-0.1g gathers
Close aluminium chloride and 8-10mg polyacrylamides.
5. a kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method according to claim 1, it is characterised in that
Step（2）The concrete mode of described separation of solid and liquid is to be passed through quartz sand mistake after the supernatant after standing is precipitated by flat flow
Separation of solid and liquid is carried out in filter post.
6. a kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method according to claim 1, it is characterised in that
Step（3）The dosage of described ozone is that 1L centrifuge mother liquors add 2-3g ozone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419617.0A CN107176755A (en) | 2017-06-06 | 2017-06-06 | A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710419617.0A CN107176755A (en) | 2017-06-06 | 2017-06-06 | A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method |
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| Publication Number | Publication Date |
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| CN107176755A true CN107176755A (en) | 2017-09-19 |
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| CN201710419617.0A Pending CN107176755A (en) | 2017-06-06 | 2017-06-06 | A kind of polyvinyl chloride centrifugation mother liquid multi-method combined pretreatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078851A (en) * | 2019-04-29 | 2019-08-02 | 杰瑞德工业设备(北京)有限公司 | Polyvinyl chloride suspension polymerization |
| CN110078318A (en) * | 2019-06-10 | 2019-08-02 | 苏州中色德源环保科技有限公司 | A kind of chemical industry for making chlorine and alkali mother liquor water process and reclaiming system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001027039A1 (en) * | 1999-10-08 | 2001-04-19 | Pierre Mongin | Method for purifying domestic, agricultural and industrial wastewater |
| CN101343132A (en) * | 2008-08-28 | 2009-01-14 | 杭州水处理技术研究开发中心有限公司 | Treatment method for wastewater of polyvinyl chloride (PVC) anticentripetal mother solution |
| CN101525198A (en) * | 2009-04-03 | 2009-09-09 | 寿光新龙电化集团聚氯乙烯有限公司 | Method for treating and recovering polyvinyl chloride mother liquid waste water |
| CN102775011A (en) * | 2012-07-20 | 2012-11-14 | 山东国瑞环保产业有限公司 | Treating and recycling method for PVC mother liquor wastewater |
| CN105036463A (en) * | 2015-07-04 | 2015-11-11 | 吉林大学 | Polyvinyl chloride centrifugal mother liquor wastewater pretreatment method |
-
2017
- 2017-06-06 CN CN201710419617.0A patent/CN107176755A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001027039A1 (en) * | 1999-10-08 | 2001-04-19 | Pierre Mongin | Method for purifying domestic, agricultural and industrial wastewater |
| CN101343132A (en) * | 2008-08-28 | 2009-01-14 | 杭州水处理技术研究开发中心有限公司 | Treatment method for wastewater of polyvinyl chloride (PVC) anticentripetal mother solution |
| CN101525198A (en) * | 2009-04-03 | 2009-09-09 | 寿光新龙电化集团聚氯乙烯有限公司 | Method for treating and recovering polyvinyl chloride mother liquid waste water |
| CN102775011A (en) * | 2012-07-20 | 2012-11-14 | 山东国瑞环保产业有限公司 | Treating and recycling method for PVC mother liquor wastewater |
| CN105036463A (en) * | 2015-07-04 | 2015-11-11 | 吉林大学 | Polyvinyl chloride centrifugal mother liquor wastewater pretreatment method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078851A (en) * | 2019-04-29 | 2019-08-02 | 杰瑞德工业设备(北京)有限公司 | Polyvinyl chloride suspension polymerization |
| CN110078851B (en) * | 2019-04-29 | 2021-04-23 | 杰瑞德工业设备(北京)有限公司 | Suspension polymerization method for polyvinyl chloride |
| CN110078318A (en) * | 2019-06-10 | 2019-08-02 | 苏州中色德源环保科技有限公司 | A kind of chemical industry for making chlorine and alkali mother liquor water process and reclaiming system |
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Application publication date: 20170919 |