CN1843955A - Process and equipment for treating PVC centrifugal mother liquor - Google Patents
Process and equipment for treating PVC centrifugal mother liquor Download PDFInfo
- Publication number
- CN1843955A CN1843955A CN200510024962.1A CN200510024962A CN1843955A CN 1843955 A CN1843955 A CN 1843955A CN 200510024962 A CN200510024962 A CN 200510024962A CN 1843955 A CN1843955 A CN 1843955A
- Authority
- CN
- China
- Prior art keywords
- mother liquor
- liquid
- centrifuge mother
- pvc
- pvc centrifuge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to a process for treating PVC centrifugal parent liquid, and it is characterized in that it comprises following steps: (1) regulating temperature of centrifugal liquid of PVC to 20-40 Deg. C in a temperature-regulating device; (2) transferring the liquid with regulated temperature into an air-gas mixing device for mixing; (3) transferring liquid got in step (2) into a solid-liquid separating device and getting intermediate liquid and recovery liquid through solid and liquid separation; (4) transferring said intermediate liquid into a counter-osmosis device and getting filtering liquid by filtering through reverse osmosis membrane. The invention also provides a device for treating PVC centrifugal parent liquid. The filtering liquid got after removing foreign matter from PVC centrifugal liquid reaches standard for being reused in polymeric process.
Description
Technical field
The present invention relates to wastewater treatment method and equipment, relate in particular to a kind of treatment process and equipment of PVC centrifuge mother liquor.
Background technology
Polyvinyl chloride is as important organic polymer materials, be widely used in departments such as light industry, building materials, agricultural, daily life, packing, electric power, public utilities, especially occupy an important position in plastic material (building plastic, agripast, Plastic Packaging Materials, daily plastic, industrial engineering plastics) Application Areas.Now industrial PVC preparation technology commonly used be by raw material vinylchlorid through polymerization, gas carry, sedimentation, step such as centrifugal obtain polyvinyl chloride (PVC), also contain PVC particle, vinylchlorid (VCM) monomer outside dewatering in the last centrifuge mother liquor, end complicated compositions such as agent, flocculation agent, initiator, therefore can't directly reclaim use; At present usually adopt biochemical method or traditional physical method to handle to this kind PVC centrifuge mother liquor, the clear liquid that the obtains recycling of can only demoting, direct reuse is in follow-up polymerization process again.There is report directly to adopt filter membrane to handle the cleaner liquid of crossing that the PVC centrifuge mother liquor can obtain direct reuse, but owing to contain various impurity in the PVC centrifuge mother liquor, filtering membrane very easily is plugged in this treatment process, and it utilizes the life-span very short, has directly caused the expensive of this kind technology.
Summary of the invention
In order to overcome the defective of prior art, one of purpose of the present invention provides a kind of can the processing to obtain directly recycling the treatment process of crossing cleaner liquid in polymerization process the PVC centrifuge mother liquor.
Second purpose of the present invention provides a kind of treatment facility that adopts the PVC centrifuge mother liquor of above-mentioned technology.
For reaching above-mentioned first goal of the invention, the invention provides a kind of treatment process of PVC centrifuge mother liquor, it is characterized in that, may further comprise the steps: (1) is transported to a register with the PVC centrifuge mother liquor and is carried out temperature adjustment, the temperature regulation of described PVC centrifuge mother liquor to 20-40 ℃, is obtained the PVC centrifuge mother liquor after the temperature adjustment; (2) the PVC centrifuge mother liquor after the described temperature adjustment is transported to a gas and water mixer, mix obtaining centrifuge mother liquor by air water through air water blended PVC; (3) transport to an equipment for separating liquid from solid with described through air water blended PVC centrifuge mother liquor, obtain intermediate liquid and reclaim liquid by solid-liquid separation; (4) described intermediate liquid is failed a reverse osmosis unit, but obtain the cleaner liquid of crossing of direct reuse by reverse osmosis membrane filtration.
Preferably, described temperature adjustment adopts the method for nature cooling groove or plate-type heat exchanger or its combination to carry out.
Preferably, described air water mixes and adopts spray, aeration, gas one of to carry or the method for its arbitrary combination is carried out.
Preferably, described solid-liquid separation adopts the method for one of sedimentation, sand filtration, micro-filtration, ultrafiltration or its arbitrary combination to carry out.
Preferably, described reverse osmosis unit adopts the osmosis filtration film to carry out.
For realizing above-mentioned second goal of the invention, the invention provides a kind of treatment facility that adopts the PVC centrifuge mother liquor of aforementioned technology, it is characterized in that, comprise register, be arranged on gas and water mixer after the described register, be arranged on the equipment for separating liquid from solid after the described gas and water mixer and be arranged on reverse osmosis unit after the described equipment for separating liquid from solid.
Preferably, cooling groove or a plate-type heat exchanger or its constitute described register naturally by one.Preferably, described gas and water mixer is by a spray equipment or an aerating apparatus or an air-lift device or wherein two or three constitute arbitrarily.
Preferably, described equipment for separating liquid from solid by a settling bowl or a sand filtering device or a micro-filtration or a ultra-filtration equipment or wherein two or more arbitrarily more than constitute.
Because the present invention adopts the impurity in above-mentioned technology and the equipment removal PVC centrifuge mother liquor, obtains cleaner liquid, thereby but reach the standard of direct reuse in polymerization process; Owing to do not add flocculation agent in this technology, remaining after treatment recovery liquid and the SS in the concentrated solution (can intercept suspended substance) composition PVC particle also can be realized reclaiming fully simultaneously.
Description of drawings
Fig. 1 is the PVC centrifuge mother liquor processing technological flow figure of prior art;
Fig. 2 is the schema of treatment process first embodiment of PVC centrifuge mother liquor of the present invention;
Fig. 3 is the schema of treatment process second embodiment of PVC centrifuge mother liquor of the present invention;
Fig. 4 is the schema of treatment process the 3rd embodiment of PVC centrifuge mother liquor of the present invention;
Fig. 5 is the schema of treatment process the 4th embodiment of PVC centrifuge mother liquor of the present invention;
Fig. 6 is the schema of treatment process the 5th embodiment of PVC centrifuge mother liquor of the present invention;
Fig. 7 is the synoptic diagram of an embodiment of the treatment facility of PVC centrifuge mother liquor of the present invention;
Fig. 8 is the synoptic diagram of another embodiment of the treatment facility of PVC centrifuge mother liquor of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
Referring to Fig. 1, shown in the figure PVC centrifuge mother liquor processing technological flow figure of prior art.The PVC centrifuge mother liquor is before entering treatment unit, at first to remove the floating matter of bulk in the PVC centrifuge mother liquor and suspended substance to guarantee the normal operation of aftertreatment device through grid, PVC centrifuge mother liquor through grid enters the priming reservoir of lift pump room, enters the two-stage horizontal flow type grit chamber then to separate clean sand.Enter mixing pit and mix with flocculation agent, the water through reaction tank and inclined tube heavy filter tank purification enters air flotation pool again, filters through clean water basin and sand filter again, and institute's water outlet reaches secondary discharge standard substantially, but can not be back to the PVC polymerization process.
Referring to Fig. 2, it shown in the figure schema of first embodiment of the treatment process of a kind of PVC centrifuge mother liquor of the present invention, may further comprise the steps: to be 5.69NTU (nephelometric turbidity unit), COD (chemical oxygen demand (COD)) with turbidity lead to 365us/cm, PH are about 7.0, temperature is that 60 ℃ PVC centrifuge mother liquor 50L transports to a register for 208mg/L, electricity (1)---and (Alfa Laval) plate-type heat exchanger carries out temperature adjustment, obtain the PVC centrifuge mother liquor of temperature adjustment to 20 ℃ by heat exchange, after testing, its turbidity is increased to 5.99NTU, and other parameter changes are small; (2) the PVC centrifuge mother liquor after the temperature adjustment is imported a gas and water mixer---in the spray column, by being installed in the spray header ejection in the spray column, thereby be dispersed as the liquid in the described PVC centrifuge mother liquor vaporific, make wherein volatile component fully contact the generation physical-chemical reaction with air, reduced the organic concentration in the described PVC centrifuge mother liquor, after testing, the COD through the mixed PVC centrifuge mother liquor of air water drops to 181mg/L; (3) will transport to an equipment for separating liquid from solid through the mixed PVC centrifuge mother liquor of air water, this equipment for separating liquid from solid comprises a settling bowl and (Hyflux produces Kristal 300 types) ultra-filtration equipment, earlier will be through the mixed PVC centrifuge mother liquor of air water natural subsidence 4 hours in settling bowl, obtain supernatant liquid and lower floor and reclaim liquid, at this moment, the COD of supernatant liquid drops to 118mg/L, and turbidity is reduced to 2.5NUT, and specific conductivity then rises to 478us/cm; And then supernatant liquid is carried out ultra-filtration and separation by ultra-filtration equipment obtain intermediate liquid and concentrated solution, the COD of described intermediate liquid is 110mg/L, and specific conductivity is 452us/cm, and turbidity is reduced to 0.01NTU, and PH remains unchanged; (4) will import one (the Duraslick pollution-resistant membrane RO8040 type of GE) reverse osmosis unit through the intermediate liquid that solid-liquid separation obtains again, but obtain the cleaner liquid of crossing of direct reuse by reverse osmosis membrane filtration wherein, after testing, this moment, gained was crossed the COD of cleaner liquid less than 10mg/L, do not contain terminator and initiator, specific conductivity is 10us/cm, only contains a spot of vinylchlorid in the clear liquid, reaches the standard that can be back to polymerization process once more.
Referring to Fig. 3, it shown in the figure schema of second embodiment of the treatment process of a kind of PVC centrifuge mother liquor of the present invention, may further comprise the steps: (1) with turbidity be that 10.52NTU, COD are that 259mg/L, specific conductivity are that 438us/cm, PH are about 7.0, temperature is that 60 ℃ PVC centrifuge mother liquor is transported to a register---the cooling groove carries out temperature adjustment naturally, by natural temp regulating to 40 ℃, after testing, this moment, its turbidity was increased to 11.10NTU; (2) the PVC centrifuge mother liquor after the temperature adjustment is imported a gas and water mixer, this gas and water mixer comprises that an aeration tank and that has air driven pump has the gas stripping column of compressed vapour pump, earlier with in the input of the PVC centrifuge mother liquor after the temperature adjustment aeration tank, air driven pump is squeezed into pressurized air in the aeration tank, make the liquid in the aeration tank be in the intensive agitated conditions, and make airborne oxygen transfer in the PVC centrifuge mother liquor, carrying out aeration handles, after 30 minutes, in the PVC centrifuge mother liquor input gas stripping column after the aeration processing, the compressed vapour pump is squeezed into compressed vapour in the gas stripping column, make PVC centrifuge mother liquor and steam thorough mixing in gas stripping column, make that dissolved gases and volatile material pass liquid-gas interface in the PVC centrifuge mother liquor, move to gas phase, liquid portion is through the mixed PVC centrifuge mother liquor of air water; (3) will carry out solid-liquid separation in air water blended PVC centrifuge mother liquor is imported an equipment for separating liquid from solid-(the NFY-8080 type that NOVO SPRING company provides) ultra-filtration equipment handles, obtain intermediate liquid and concentrated solution, the COD of this intermediate liquid is 118mg/L, electricity is led and is 427us/cm, turbidity drops to 0.01NTU, and PH is 7.0; (4) will after solid-liquid separation, import one (the LFC2-8040 type antipollution type that Hydranautics company provides) reverse osmosis unit by resulting intermediate liquid again, but obtain the cleaner liquid of crossing of direct reuse by reverse osmosis membrane filtration wherein, after testing, this moment, gained was crossed the COD of cleaner liquid less than 10mg/L, and do not contain terminator and initiator, specific conductivity is 9.4us/cm, crosses in the cleaner liquid only to contain a spot of vinylchlorid, reaches the standard that can be back to polymerization process once more.
Referring to Fig. 4, it shown in the figure schema of the 3rd embodiment of the treatment process of a kind of PVC centrifuge mother liquor of the present invention, may further comprise the steps: (1) with turbidity be that 11.87NTU, COD are that 214mg/L, specific conductivity are that 449us/cm, PH are about 7.4, temperature is that 65 ℃ PVC centrifuge mother liquor is transported to a register---carry out temperature adjustment in the cooling groove naturally, by natural temp regulating to 25 ℃, after testing, its turbidity is increased to 13.2NTU; (2) the PVC centrifuge mother liquor after the temperature adjustment is imported a gas and water mixer---have in the aeration tank of air driven pump, also have a shower nozzle on the aeration tank, described air driven pump is squeezed into pressurized air in the aeration tank, make the liquid in the aeration tank be in the intensive agitated conditions, and make airborne oxygen transfer in the PVC centrifuge mother liquor, carrying out aeration handles, after 30 minutes, mother liquor after aeration is handled sprays from the shower nozzle on the aeration tank, obtain through the mixed PVC centrifuge mother liquor of air water, this moment, its COD dropped to 162mg/L; (3) will be through input one equipment for separating liquid from solid under the effect of the mixed PVC centrifuge mother liquor of air water in static pressure---carry out solid-liquid separation in (the EW8040F type that GE company provides) micro-filtration and handle, obtain intermediate liquid and concentrated solution, the COD of described intermediate liquid is 150mg/L, specific conductivity is 440us/cm, turbidity is 0.03NTU, and PH is 7.3; (4) will under the effect of intermediate liquid that solid-liquid separation obtains, import one (the BW30LE-440 type that DOW provides) reverse osmosis unit again in static pressure, but obtain the cleaner liquid of crossing of direct reuse by reverse osmosis membrane filtration wherein, after testing, the COD that crosses cleaner liquid that obtains this moment is less than 10mg/L, do not contain terminator and initiator, specific conductivity is 8.9us/cm, only contains a spot of vinylchlorid in the filtration, reaches the standard that can be back to polymerization process once more.
Referring to Fig. 5, it shown in the figure schema of the 4th embodiment of the treatment process of a kind of PVC centrifuge mother liquor of the present invention, may further comprise the steps: (1) with turbidity 7.27NTU, COD be that 174mg/L, specific conductivity are that 449us/cm, PH are 7.0, temperature is that 68 ℃ PVC centrifuge mother liquor 50mL transports to a register---the plate-type heat exchanger of (Alfa Laval) carries out temperature adjustment, obtain being cooled to 30 ℃ PVC centrifuge mother liquor by heat exchange, after testing, its turbidity is increased to 10.09NTU; (2) the PVC centrifuge mother liquor after will lowering the temperature is imported a gas and water mixer---in the spray column, by being installed in the spray header ejection of spray column, thereby be dispersed as the liquid in the PVC centrifuge mother liquor vaporific, make that volatile component fully contacts the generation physical-chemical reaction with air in its mother liquor, reduced the organic concentration in the described PVC centrifuge mother liquor, be reduced to 168mg/L through the COD of the mixed PVC centrifuge mother liquor of air water; (3) will transport to an equipment for separating liquid from solid through air water blended PVC centrifuge mother liquor, to transport to through air water blended PVC centrifuge mother liquor earlier-the settling bowl natural subsidence is after 4-5 hour, obtain supernatant liquid and lower floor and reclaim liquid, again supernatant liquid is passed through sand filtering device, separate and obtain intermediate liquid, its COD is 124mg/L, and specific conductivity is 579us/cm, and turbidity is 1.04NTU; (4) intermediate liquid that again solid-liquid separation is obtained is imported (the 2-8040 type antipollution type that Hydranautics company provides) reverse osmosis unit under the effect of static pressure, but obtain the cleaner liquid of crossing of direct reuse by reverse osmosis membrane filtration wherein, after testing, the COD that crosses cleaner liquid that obtains this moment is less than 10mg/L, do not contain terminator and initiator, specific conductivity is 9.8us/cm, only contains a spot of vinylchlorid in the filtration, reaches the standard that can be back to polymerization process once more.
Referring to Fig. 6, it shown in the figure schema of the 4th embodiment of the treatment process of a kind of PVC centrifuge mother liquor of the present invention, may further comprise the steps: (1) with turbidity be that 4.32NTU, COD are that 68mg/L, specific conductivity are that 237us/cm, PH are about 7.4, temperature is that 49 ℃ PVC centrifuge mother liquor is transported to a register---carry out temperature adjustment in the cooling groove naturally, by natural temp regulating to 36 ℃, after testing, its turbidity is increased to 5.65NTU; (2) the PVC centrifuge mother liquor after the temperature adjustment is imported a gas and water mixer---have in the aeration tank of air driven pump, also have a shower nozzle on the aeration tank, described air driven pump is squeezed into pressurized air in the aeration tank, make the liquid in the aeration tank be in the intensive agitated conditions, and make airborne oxygen transfer in the PVC centrifuge mother liquor, carrying out aeration handles, after 30 minutes, mother liquor after aeration is handled sprays from the shower nozzle on the aeration tank, obtain through the mixed PVC centrifuge mother liquor of air water, this moment, its COD rose to 131mg/L; (3) will import an equipment for separating liquid from solid through air water blended mother liquor---in (the stacked full-automatic back washing type of SPIN KLIN that ARKAL company produces) Arkal strainer, separate and obtain intermediate liquid and concentrated solution, the COD of described intermediate liquid drops to 110mg/L, specific conductivity is 233us/cm, turbidity is 0.25NTU, and PH is 7.3; (4) will under the effect of intermediate liquid that solid-liquid separation obtains, transport to (the TML20-370 antipollution type that TORAY provides) reverse osmosis unit again in static pressure, but obtain the cleaner liquid of crossing of direct reuse by reverse osmosis membrane filtration wherein, after testing, the COD that crosses cleaner liquid that obtains this moment is less than 10mg/L, do not contain terminator and initiator, specific conductivity is 0.1us/cm, only contains a spot of vinylchlorid in the filtration, reaches the standard that can be back to polymerization process once more.
SS composition composition PVC particle filtration in the last recovery liquid of concentrated solution in the foregoing description and osmosis filtration, flushing obtain also can realizing the standard that reclaims fully.
Referring to Fig. 7, it shown in the figure synoptic diagram of an embodiment of the treatment facility of a kind of PVC centrifuge mother liquor of the present invention, comprise register, gas and water mixer, equipment for separating liquid from solid and reverse osmosis unit, wherein, register be one naturally the cooling groove 7, gas and water mixer is an aeration tank 8 and a spray column 2, and equipment for separating liquid from solid is a settling bowl 4 and a ultra-filtration equipment 5, and reverse osmosis unit is a reverse-osmosis filtering device 6.The described groove 7 of cooling naturally is provided with the fluid inlet 71 and the liquid outlet 72 of PVC centrifuge mother liquor; Described aeration tank 8 is provided with the inlet mouth 83 of fluid inlet 81, liquid outlet 82 and the air of PVC centrifuge mother liquor; Described spray column 2 is provided with fluid inlet 21, the liquid outlet 22 of PVC centrifuge mother liquor, the inlet mouth 23 and the air outlet 24 of air; Described settling bowl 4 is provided with fluid inlet 41, liquid outlet 42 and the mud discharging mouth 43 of PVC centrifuge mother liquor; Described ultra-filtration equipment 5 is provided with the fluid inlet 51 of centrifuge mother liquor, the liquid outlet 52 of intermediate liquid and the liquid outlet 53 of concentrated solution; Described reverse-osmosis filtering device 6 is provided with the liquid outlet 63 of the fluid inlet 61 of intermediate liquid, the liquid outlet 62 of crossing cleaner liquid and recovery liquid.The liquid outlet 72 of the described groove 7 of cooling naturally links to each other by the fluid inlet 81 of pipeline with the aeration tank 8 that has air compressor pump 16; the liquid outlet 82 of described aeration tank 8 links to each other by the fluid inlet 21 of pipeline with the spray column 2 that has air compressor pump 17; the liquid outlet 22 of described spray column 2 links to each other with the fluid inlet 41 of settling bowl 4 by pipeline; the liquid outlet 42 of described settling bowl 4 links to each other by the fluid inlet 51 of pipeline with ultra-filtration equipment 5 bottoms; the liquid outlet 52 at described ultra-filtration equipment 5 tops links to each other by the fluid inlet 61 of pipeline and reverse osmosis unit 6; the cleaner liquid of crossing that obtains by filtration is back to polymerization process from liquid outlet 62 discharges; filtering last recovery liquid discharges from liquid outlet 63; wherein SS composition PVC particle washes and reclaims after filtration.Spray column 2 shown in above-mentioned also can replace with the gas stripping column (not shown).
Referring to Fig. 8, it shown in the figure synoptic diagram of another embodiment of the treatment facility of a kind of PVC centrifuge mother liquor of the present invention, comprise register, gas and water mixer, equipment for separating liquid from solid and reverse-osmosis filtering device, wherein, register is a plate-type heat exchanger 1, gas and water mixer is a settling bowl 4 and gas stripping column 9, and equipment for separating liquid from solid is a sand filtering device 12.Described plate-type heat exchanger 1 is provided with fluid inlet 14, the liquid outlet 15 of PVC centrifuge mother liquor, the fluid inlet 19 and the liquid outlet 20 of steam; Described settling bowl 4 is provided with fluid inlet 41, liquid outlet 42 and the mud discharging mouth 43 of PVC centrifuge mother liquor; Described gas stripping column 9 is provided with fluid inlet 91, the liquid outlet 92 of PVC centrifuge mother liquor, the steam inlet 93 and the steam outlet 94 of steam; Described sand filtering device 12 is provided with the fluid inlet 121 of liquid at its top, be provided with the liquid outlet 122 of liquid in its bottom, also is provided with backwash liquor fluid inlet 123 and sewage draining exit 124 in addition; Described reverse osmosis unit 6 is provided with the liquid outlet 63 of the fluid inlet 61 of intermediate liquid, the liquid outlet 62 of crossing cleaner liquid and recovery liquid.The PVC centrifuge mother liquor liquid outlet 15 of described plate-type heat exchanger 1 links to each other with the fluid inlet 41 of settling bowl 4 by pipeline; the liquid outlet 42 of described settling bowl 4 links to each other with gas stripping column 9 fluid inlets 91 that have vapour compression pump 18 by pipeline; the liquid outlet 92 of described gas stripping column 9 links to each other by the fluid inlet 121 of pipeline with sand filtering device 12 tops; the liquid outlet 122 of sand filtering device 12 links to each other with the fluid inlet 61 of the intermediate liquid of reverse-osmosis filtering device 6 by pipeline; the cleaner liquid of crossing that obtains by filtration is back to polymerization process from liquid outlet 62 discharges; filter last recovery liquid and discharge from liquid outlet 63, wherein SS composition PVC particle after filtration; flushing is reclaimed.Above-mentioned described sand tower 12 also can replace with micro-filtration (not shown) or Arkal strainer (not shown).The fluid inlet (not shown) of micro-filtration (not shown) and liquid outlet (not shown) are located at the bottom and the top of micro-filtration (not shown) respectively, and the fluid inlet (not shown) of backwash liquor is located at the side near the top, and the slag-drip opening (not shown) is located at and leans on the into bottom of another side.The present invention adopts the impurity in traditional treatment technology and the filter film technology process combined removal PVC centrifuge mother liquor, obtained cleaner liquid, reach the degree that can be back to polymerization process, reverse-osmosis filtering device adopts hot water recoil cleaning and filtering film, the processing power of its filtering membrane is restored, and has prolonged the life-span that is to use of filtering membrane to a great extent.Owing to do not add flocculation agent in this technology, the SS composition PVC particle in the PVC mother liquor can be realized reclaiming fully, and reaches the requirement of product simultaneously.
Claims (9)
1. the treatment process of a PVC centrifuge mother liquor is characterized in that, may further comprise the steps: (1) is transported to a register with the PVC centrifuge mother liquor and is carried out temperature adjustment, and the temperature regulation of described PVC centrifuge mother liquor to 20-40 ℃, is obtained the PVC centrifuge mother liquor after the temperature adjustment; (2) the PVC centrifuge mother liquor after the described temperature adjustment is transported to a gas and water mixer, mix obtaining the mixed PVC centrifuge mother liquor of air water by air water; (3) transport to an equipment for separating liquid from solid with described through the mixed PVC centrifuge mother liquor of air water, obtain intermediate liquid and reclaim liquid by solid-liquid separation; (4) described intermediate liquid is failed a reverse osmosis unit, but obtain the cleaner liquid of crossing of direct reuse by reverse osmosis membrane filtration.
2. the treatment process of a kind of PVC centrifuge mother liquor as claimed in claim 1 is characterized in that, described temperature adjustment adopts the method for nature cooling groove or plate-type heat exchanger or its combination to carry out.
3. the treatment process of a kind of PVC centrifuge mother liquor as claimed in claim 1 is characterized in that, described air water mixes and adopts spray, aeration, gas one of to carry or the method for its arbitrary combination is carried out.
4. the treatment process of a kind of PVC centrifuge mother liquor as claimed in claim 1 is characterized in that, described solid-liquid separation adopts the method for one of sedimentation, sand filtration, micro-filtration, ultrafiltration or its arbitrary combination to carry out.
5. the treatment process of a kind of PVC centrifuge mother liquor as claimed in claim 1 is characterized in that, described reverse osmosis unit adopts reverse osmosis membrane to carry out.
6. realize the equipment of PVC centrifuge mother liquor treatment process according to claim 1 for one kind, it is characterized in that, comprise register, be arranged on gas and water mixer after the described register, be arranged on the equipment for separating liquid from solid after the described gas and water mixer and be arranged on reverse osmosis unit after the described equipment for separating liquid from solid.
7. the equipment of a kind of PVC centrifuge mother liquor treatment process as claimed in claim 6 is characterized in that, cooling groove or a plate-type heat exchanger or its constitute described register naturally by one.
8. the equipment of a kind of PVC centrifuge mother liquor treatment process as claimed in claim 6 is characterized in that, described gas and water mixer is by a spray column or an aeration tank or a gas stripping column or wherein two or three constitute arbitrarily.
9. the equipment of a kind of PVC centrifuge mother liquor treatment process as claimed in claim 6 is characterized in that, described equipment for separating liquid from solid by a settling bowl or a sand filtering device or a micro-filtration or a ultra-filtration equipment or wherein two or more arbitrarily more than constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100249621A CN100358815C (en) | 2005-04-07 | 2005-04-07 | Process and equipment for treating PVC centrifugal mother liquor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100249621A CN100358815C (en) | 2005-04-07 | 2005-04-07 | Process and equipment for treating PVC centrifugal mother liquor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1843955A true CN1843955A (en) | 2006-10-11 |
| CN100358815C CN100358815C (en) | 2008-01-02 |
Family
ID=37062926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100249621A Active CN100358815C (en) | 2005-04-07 | 2005-04-07 | Process and equipment for treating PVC centrifugal mother liquor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100358815C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333051B (en) * | 2007-11-16 | 2010-07-28 | 北京中科国益环保工程有限公司 | Process for treating and recovering polyvinyl chloride centrifugation mother liquid by suspension method |
| WO2011000052A1 (en) * | 2009-07-03 | 2011-01-06 | Australian Vinyls Corporation Pty Ltd | Process and system for treating an aqueous stream from a polymerisation process |
| CN102372389A (en) * | 2011-10-14 | 2012-03-14 | 广州新普利水处理科技有限公司 | PVC (polyvinyl chloride) centrifugal mother liquor wastewater recycling process utilizing tubular membrane filter |
| CN102826675A (en) * | 2011-06-16 | 2012-12-19 | 张家港市贝尔机械有限公司 | Simple and practical water treatment facility |
| CN102923888A (en) * | 2011-08-08 | 2013-02-13 | 凯膜过滤技术(上海)有限公司 | Method for electrochemical treatment of PVC centrifugation mother liquor and pretreatment system |
| CN104291487A (en) * | 2014-10-09 | 2015-01-21 | 上海安赐机械设备有限公司 | Treatment device and treatment method for treating and recycling PVC mother liquid wastewater |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1105685C (en) * | 1998-04-07 | 2003-04-16 | 中国石化齐鲁石油化工公司 | Process for treating waste water of polyvinyl chloride |
| CN1546403A (en) * | 2003-12-04 | 2004-11-17 | 澎 王 | Regeneration cycle applied technique for waste water from polyvinyl chloride industry |
| CN2818473Y (en) * | 2005-04-07 | 2006-09-20 | 凯膜过滤技术(上海)有限公司 | PVC centrifugal mother liquid treater |
-
2005
- 2005-04-07 CN CNB2005100249621A patent/CN100358815C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333051B (en) * | 2007-11-16 | 2010-07-28 | 北京中科国益环保工程有限公司 | Process for treating and recovering polyvinyl chloride centrifugation mother liquid by suspension method |
| WO2011000052A1 (en) * | 2009-07-03 | 2011-01-06 | Australian Vinyls Corporation Pty Ltd | Process and system for treating an aqueous stream from a polymerisation process |
| CN102826675A (en) * | 2011-06-16 | 2012-12-19 | 张家港市贝尔机械有限公司 | Simple and practical water treatment facility |
| CN102923888A (en) * | 2011-08-08 | 2013-02-13 | 凯膜过滤技术(上海)有限公司 | Method for electrochemical treatment of PVC centrifugation mother liquor and pretreatment system |
| CN102923888B (en) * | 2011-08-08 | 2016-01-13 | 凯膜过滤技术(上海)有限公司 | A kind of method of electrochemical treatment PVC centrifugation mother liquor |
| CN102372389A (en) * | 2011-10-14 | 2012-03-14 | 广州新普利水处理科技有限公司 | PVC (polyvinyl chloride) centrifugal mother liquor wastewater recycling process utilizing tubular membrane filter |
| CN104291487A (en) * | 2014-10-09 | 2015-01-21 | 上海安赐机械设备有限公司 | Treatment device and treatment method for treating and recycling PVC mother liquid wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100358815C (en) | 2008-01-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101343132B (en) | Treatment method for wastewater of polyvinyl chloride (PVC) anticentripetal mother solution | |
| CN100358815C (en) | Process and equipment for treating PVC centrifugal mother liquor | |
| Inc | New separation system extends the use of membranes | |
| CN101148275B (en) | PVC centrifugal mother liquor treatment reclaiming technique and device | |
| KR101589763B1 (en) | Method for cleaning Filtering Membrane | |
| KR100843656B1 (en) | Advanced drinking water treatment system using two-stage submerged membranes | |
| CN111807617A (en) | Water-based paint waste liquid treatment and recycling system and method | |
| MXPA04009469A (en) | Waste water treatment process for animal processing contaminant removal. | |
| CN109052729A (en) | A kind of processing system and processing method of coal mine drainage water | |
| CN113754172A (en) | Polycrystalline silicon wastewater treatment method | |
| CN109437455A (en) | The processing equipment and method of secondary clarifier effluent Treated sewage reusing | |
| CN206521360U (en) | Desulphurization for Coal-fired Power Plant waste water and Wastewater Form Circulating Cooling Water Zero discharging system | |
| CN111410334B (en) | Method for quickly recycling wastewater produced by crushing and cleaning line of dangerous waste plastic packaging container | |
| CN2818473Y (en) | PVC centrifugal mother liquid treater | |
| KR20060015432A (en) | System for processing organic waste water of high concentration | |
| CN211004887U (en) | Waste incineration power plant waste water processing system | |
| KR101973736B1 (en) | Method for production of sludge dewatering cake in ceramic membrane filtration process using submerged membrane and pressurized membrane | |
| CN112759116A (en) | Contain FEP waste water recovery processing system | |
| Abdel-Kader | A review of Membrane Bioreactor (MBR) technology and their applications in the wastewater treatment systems | |
| CN112624482A (en) | Acid phase method chlorinated polyethylene production wastewater treatment process method and system | |
| CN1091078C (en) | Film process and its equipment for reuse of oil refining sewage | |
| RU2001663C1 (en) | Method for treating sewage from suspended matter | |
| JP3697529B2 (en) | Membrane-based wastewater treatment method and water purification apparatus | |
| JPH1119696A (en) | Treatment of sludge waste water and water purifier | |
| CN1416406A (en) | Method and device for effluent treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220826 Address after: No. 475-1, Hope Road, Malu Town, Jiading District, Shanghai, 201801 Patentee after: KAIMO SPECIAL SEPARATION TECHNOLOGY SHANGHAI Co.,Ltd. Address before: 200233 Shanghai City, Yishan Road No. 888 (Leucaena building) room 902 Patentee before: KAIMO FILTRATION TECHNOLOGY SH |
|
| TR01 | Transfer of patent right |