CN208234640U - A kind of device improving sewage stripping tower bottom reuse purified water water quality - Google Patents
A kind of device improving sewage stripping tower bottom reuse purified water water quality Download PDFInfo
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- CN208234640U CN208234640U CN201820135639.4U CN201820135639U CN208234640U CN 208234640 U CN208234640 U CN 208234640U CN 201820135639 U CN201820135639 U CN 201820135639U CN 208234640 U CN208234640 U CN 208234640U
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Abstract
The utility model discloses a kind of devices for improving sewage stripping tower bottom reuse purified water water quality.Reuse purifies water input conduit to the entrance of prefilter, prefilter lower layer outlet first-stage reverse osmosis device portal, first-stage reverse osmosis device outlet purifies water input conduit to second level reverse osmosis apparatus entrance and reuse, the outlet of second level reverse osmosis apparatus is to three-level reverse osmosis unit entrance and first-stage reverse osmosis device portal, the upper layer outlet discharge three-level concentrate of three-level reverse osmosis unit, the lower layer of three-level reverse osmosis unit, which exports, is connected to second level reverse osmosis apparatus entrance through three-level clarified water pump.The utility model enters multi-stage reverse osmosis or electrodialysis plant improvement reuse purified water water quality by shunting a small amount of reuse purified water, only generates minimal amount of concentration waste water, substantially reduces Cl therein‑And Fe2+Concentration, it is ensured that the stably reaching standard of reuse purified water water quality, the tower bottom reuse purified water suitable for the fields such as petrochemical industry and coal chemical industry sewage stripping device.
Description
Technical field
The utility model relates to the sewage strippings in the fields such as petrochemical industry, coal chemical industry to purify water recovering process, specifically
It is to relate to a kind of device for improving acid stripping tower bottom reuse purified water water quality.
Background technique
Acidic water stripping device is the important processing device of sulfur-bearing, nitrogenous effluent in the energy and chemical engineering industry, is passed through
It can be just discharged after treated sour water pollutant load is up to standard.Currently, the technique of China's acidic water stripping device mainly has three
Kind, i.e., single column low pressure full blow out stripping, single column pressurization side line stripping and double tower pressurization strip etc..Wherein single column technique is in stripper
Bottom, which is partially separated to obtain, meets discharge or reuse purified water up to standard, double tower process are then purified water in aminoacid stripping tower bottom.
In recent years, as the processing ratio of China's high-sulfur, high nitrogen, peracid and the low price crude oil with poor quality containing chlorine etc. increases year by year,
Lead to NH in petrochemical industry acid mine drainage device3、H2S and CO2Equal corrosive medias concentration rises, and other corrosivity are situated between
Matter, such as Cl-And CN-Concentration is also constantly increasing.Acid water is after stripper strips, part trace impurity, such as Cl-
And Fe2+Etc. can not all be stripped to tower top, especially in single column pressurization side line stripping process, tower top temperature lower (40~50
DEG C), Cl-It can not be almost stripped to tower top, lead to the Cl in acid water-It is mostly present in tower bottom purified water, causes serious
Etching problem.
Currently, increasingly strict with environmental protection policy, to the utilization rate of enterprise's water resource, more stringent requirements are proposed, acid
Water stripper plant tower bottom purified water reuse has become one of the important means of petroleum chemical enterprise's energy conservation, emission reduction, consumption reduction.Therefore, it designs
Reasonable reuse purification hydraulic art is more urgent with executing.In general, the use of the equipment of reuse purified water being usually with deaerated water
Standard is designed, manufactures and operation and maintenance.Relative to deaerated water water quality, the impurity content in tower bottom purified water is higher, purification
Water reuse also results in Cl-And Fe2+Continuous circulative accumulation of the equal impurity in purified water, deteriorates water quality gradually, significant to aggravate
The Flow Corrosion rate of pressure vessel and pressure pipeline in petrochemical industry in turn results in corrosive leakage, perforation, booster,
Cause unplanned shutdown accident, economic loss is heavy.Therefore, there is an urgent need to a kind of improvement sewage stripping tower bottom in petrochemical industry
The device of reuse purified water water quality improves operation adaptability of the acidic water stripping device under variable working condition environment, ensures that petrochemical industry is set
Standby long period safe and stable operation.
Utility model content
The utility model outstanding problem strong for recycle-water corrosivity existing for existing sewage stripping technique, proposes one
Kind improves the device of sewage stripping tower bottom reuse purified water water quality, effectively controls reuse under the premise of reducing water resources consumption
The content of corrosive impurity in purified water reduces the Flow Corrosion characteristic of reuse purified water, to improve the benefit of reuse purified water
With efficiency, extend service life of equipment, avoids causing Flow Corrosion Problem of Failure because of recycle-water corrosive media concentration height.
The purpose of this utility model is realized by following device:
One, the first device for improving sewage stripping tower bottom reuse purified water water quality
Device includes prefilter, first-stage reverse osmosis device, first class purification water pump, second level reverse osmosis apparatus, secondary purification
Water pump, three-level reverse osmosis unit and three-level clarified water pump；Reuse purified water is connected to the entrance of prefilter, pre-filtering through pipeline
Upper layer suspension is discharged in the outlet of device upper layer by the road, and the outlet of prefilter lower layer is communicated to entering for first-stage reverse osmosis device by the road
Mouthful, first-stage reverse osmosis device upper layer exports the entrance for being communicated to second level reverse osmosis apparatus by the road, first-stage reverse osmosis device lower layer
Outlet is connected to the intake line of reuse purified water through first class purification water pump, and the upper layer outlet of second level reverse osmosis apparatus connects by the road
The inlet duct of three-level reverse osmosis unit is led to, the lower layer of second level reverse osmosis apparatus, which exports, is connected to level-one through secondary purification water pump
Three-level concentrate, three-level reverse osmosis unit is discharged in the upper layer outlet of the entrance of reverse osmosis unit, three-level reverse osmosis unit by the road
Lower layer outlet the inlet duct of second level reverse osmosis apparatus is connected to through three-level clarified water pump.
Reuse purified water from sewage stripping tower bottom and after exchanging heat shunts a part and enters prefilter removing upper layer
Untreated reuse is formed after the first class purification water mixing of suspended matter, another part reuse purified water and the output of first-stage reverse osmosis device
The mixing water of purified water and first class purification water is discharged；Obtaining pre-filtering water after prefilter is handled and entering has reverse osmosis membrane
Multi-stage separation device: pass through the isolated first class purification water of first-stage reverse osmosis device and primary concentration liquid, first class purification water warp
It is net that untreated reuse is formed after mixing after the pressurization of first class purification water pump with the reuse purified water that another part does not enter prefilter
It is discharged after changing water and the mixing water of first class purification water；Primary concentration liquid enters second level reverse osmosis apparatus, through second level reverse osmosis apparatus
Isolated secondary purification water and secondary concentration liquid, secondary purification water return to first-stage reverse osmosis dress after the pressurization of secondary purification water pump
The input terminal and pre-filtering water set are mixed to form the mixing water of pre-filtering water Yu secondary purification water；It is anti-that secondary concentration liquid enters three-level
Permeability apparatus is purified through the isolated three-level purified water of three-level reverse osmosis unit and three-level concentrate, three-level purified water through three-level
The input terminal of second level reverse osmosis apparatus is returned to after water pump pressurization and primary concentration liquid is mixed to form three-level purified water and primary concentration
Liquid mixture, three-level concentrate discharger carry out subsequent processing.
The upper layer suspended matter includes suspended particulate and oil etc..
Two, the device of second of improvement sewage stripping tower bottom reuse purified water water quality
Device includes prefilter, level-one electrodialysis plant, first class purification water pump, second level electrodialysis plant, secondary purification
Water pump, three-stage electrodialysis device and three-level clarified water pump；Reuse purified water is connected to the entrance of prefilter, pre-filtering through pipeline
Upper layer suspension is discharged in the outlet of device upper layer by the road, and the outlet of prefilter lower layer is communicated to entering for level-one electrodialysis plant by the road
Mouthful, level-one electrodialysis plant upper layer exports the entrance for being communicated to second level electrodialysis plant by the road, level-one electrodialysis plant lower layer
Outlet is connected to the intake line of reuse purified water through first class purification water pump, and the upper layer outlet of second level electrodialysis plant connects by the road
The inlet duct of three-stage electrodialysis device is led to, the lower layer of second level electrodialysis plant, which exports, is connected to level-one through secondary purification water pump
Three-level concentrate, three-stage electrodialysis device is discharged in the upper layer outlet of the entrance of electrodialysis plant, three-stage electrodialysis device by the road
Lower layer outlet the inlet duct of second level electrodialysis plant is connected to through three-level clarified water pump.
Reuse purified water from sewage stripping tower bottom and after exchanging heat shunts a part and enters prefilter removing upper layer
Untreated reuse is formed after the first class purification water mixing of suspended matter, another part reuse purified water and the output of level-one electrodialysis plant
The mixing water of purified water and first class purification water；Pre-filtering water is obtained after prefilter is handled and entering, there is electrodialysis ion to hand over
Change the multi-stage separation device of film: by the isolated first class purification water of level-one electrodialysis plant and primary concentration liquid, first class purification
The reuse purified water that water does not enter prefilter after the pressurization of first class purification water pump with another part is formed untreated time after mixing
With being discharged after purified water and the mixing water of first class purification water；Primary concentration liquid enters second level electrodialysis plant, through second level electrodialysis
The isolated secondary purification water of device and secondary concentration liquid, secondary purification water return to level-one electric osmose after the pressurization of secondary purification water pump
The input terminal and pre-filtering water of analysis apparatus are mixed to form the mixing water of pre-filtering water Yu secondary purification water, and secondary concentration liquid enters three
Grade electrodialysis plant, through the isolated three-level purified water of three-stage electrodialysis device and three-level concentrate, three-level purified water is through three-level
The input terminal of second level electrodialysis plant is returned to after clarified water pump pressurization and primary concentration liquid is mixed to form three-level purified water and level-one
Concentrate mixture, three-level concentrate discharger carry out subsequent processing.
The upper layer suspended matter includes suspended particulate and oil etc..
The utility model pre-filtrating equipment can choose the filterings such as active carbon, microfiltration membranes or ultrafiltration membrane dress according to the actual situation
It sets.
The beneficial effects of the utility model are:
The utility model enters multi-stage reverse osmosis or electrodialysis plant improvement acid water by shunting a small amount of reuse purified water
Stripping tower bottom reuse purified water water quality only generates the concentration waste water of minute quantity (< 0.05%wt), while the reuse purification handled
Water Cl-And Fe2+Concentration reduces by 70% and 60% or more respectively, level-one reuse purified water and the mixed reuse of untreated purified water
Purified water Cl-And Fe2+Concentration reduces by 4% and 3% or more respectively, it can be ensured that the stably reaching standard of reuse purified water water quality.
The utility model is applicable to the fields such as petrochemical industry and coal chemical industry sewage stripping device (especially single column pressure side
Line stripper plant) tower bottom reuse purified water, features simple and practical process, equipment investment expense is less, device prepare flexible and changeable, nothing
Sewage stripping device need to be changed.
Detailed description of the invention
Fig. 1 is the reuse purified water water correction process device figure using three-level reverse osmosis process.
In Fig. 1: 1- reuse purified water, 2- prefilter, the upper layer 3- suspended matter, 4- pre-filtering water, 5- pre-filtering water and two
The mixing water of grade purified water, 6- first-stage reverse osmosis device, 7- primary concentration liquid, 8- first class purification water, 9- first class purification water pump,
The mixing water of 10- untreated reuse purified water and first class purification water；11- three-level purified water and primary concentration liquid mixture, 12- bis-
Grade reverse osmosis unit, 13- secondary concentration liquid, 14- secondary purification water, 15- secondary purification water pump, 16- three-level reverse osmosis unit,
17- three-level concentrate, 18- three-level purified water, 19- three-level clarified water pump.
Fig. 2 is the reuse purified water water correction process device figure using three-stage electrodialysis technique.
In Fig. 2: 20- reuse purified water, 21- prefilter, the upper layer 22- suspended matter, 23- pre-filtering water, 24- pre-filtering water
With the mixing water of secondary purification water, 25- level-one electrodialysis plant, 26- primary concentration liquid, 27- first class purification water, 28- level-one is net
Change water pump, the mixing water of 29- untreated reuse purified water and first class purification water；30- three-level purified water is mixed with primary concentration liquid
Object, 31- second level electrodialysis plant, 32- secondary concentration liquid, 33- secondary purification water, 34- secondary purification water pump, 35- three-level electric osmose
Analysis apparatus, 36- three-level concentrate, 37- three-level purified water, 38- three-level clarified water pump.
Specific embodiment
To further illustrate the technical solution of the utility model, further illustrated below by way of specific embodiment.
The utility model embodiment is as follows:
Embodiment 1: this example improves reuse purified water water quality using three-level reverse osmosis process.
As shown in Figure 1, device includes reuse purified water 1, prefilter 2, first-stage reverse osmosis device 6, first class purification water pump
9, second level reverse osmosis apparatus 12, secondary purification water pump 15, three-level reverse osmosis unit 16 and three-level clarified water pump 19；Reuse purified water
1 is connected to the entrance of prefilter 2 through pipeline, and upper layer suspension 3, prefilter 2 is discharged in the outlet of 2 upper layer of prefilter by the road
Lower layer exports the entrance for being communicated to first-stage reverse osmosis device 6 by the road, and the outlet of 6 upper layer of first-stage reverse osmosis device is communicated to by the road
The entrance of second level reverse osmosis apparatus 12, the outlet of 6 lower layer of first-stage reverse osmosis device are connected to reuse purified water through first class purification water pump 9
1 intake line, the upper layer outlet of second level reverse osmosis apparatus 12 are communicated to the inlet duct of three-level reverse osmosis unit 16 by the road,
The lower layer outlet of second level reverse osmosis apparatus 12 is connected to the entrance of first-stage reverse osmosis device 6 through secondary purification water pump 15, and three-level is anti-
Three-level concentrate 17 is discharged in the upper layer outlet of permeability apparatus 16 by the road, and the lower layer outlet of three-level reverse osmosis unit 16 is net through three-level
Change the inlet duct that water pump 19 is connected to second level reverse osmosis apparatus 12.
Concrete technology flow process is shown in Fig. 1, from sewage stripping tower bottom and exchange heat after reuse purified water 1 shunt a part into
Enter prefilter 2 and removes upper layer suspension, the first class purification that another part reuse purified water 1 and first-stage reverse osmosis device 6 export
Water 8 forms untreated reuse purified water after mixing and the mixing water 10 of first class purification water enters stages.At prefilter 2
Pre-filtering water 4 after reason enters the multi-stage separation device with reverse osmosis membrane: first passing through first-stage reverse osmosis device 6 isolated one
Grade purified water 8 and primary concentration liquid 7, first class purification water 8 return to the input terminal of prefilter 2 after the pressurization of first class purification water pump 9,
And the mixing water 10 of untreated reuse purified water Yu first class purification water, level-one are mixed to form with untreated reuse purified water 1
Concentrate 7 enters the isolated secondary purification water 14 of second level reverse osmosis apparatus 12 and secondary concentration liquid 13, and secondary purification water 14 passes through
Secondary purification water pump 15 returns to the input terminal of first-stage reverse osmosis device 6 after pressurizeing, and is mixed to form pre-filtering water with pre-filtering water 4
With the mixing water 5 of secondary purification water, secondary concentration liquid 13 enters isolated 18 He of three-level purified water of three-level reverse osmosis unit 16
Three-level concentrate 17, three-level purified water 18 return to the input terminal of second level reverse osmosis apparatus 12 after the pressurization of three-level clarified water pump 19,
And it is mixed to form three-level purified water and primary concentration liquid mixture 11 with primary concentration liquid 7, three-level concentrate 17, which goes out device, to carry out
Follow up device processing.
The purification water flow that the utility model enters purification water treatment facilities (reverse osmosis or electrodialysis plant) accounts for total reuse
Purify the 1%~20% of water flow.Into the reuse purified water Cl of purification water treatment facilities-Content is 0~200ppmw, Fe2+Contain
0~20ppmw is measured, total non-volatile impurities content is no more than 200ppmw.Prefilter can choose according to the actual situation active carbon,
The filter devices such as microfiltration membranes or ultrafiltration membrane.
Certain enterprise's hydrogenation wastewater is shown in Table 1 through single column pressurization side line stripping process stripping, process data.Reverse osmosis unit processing
Amount is 5t/h, untreated reuse purified water Cl-Concentration is 10 μ g/g, Fe2+Concentration is 3 μ g/g.
1 three-level reverse osmosis process parameter of table
| Technological parameter title | Numerical value | Technological parameter title | Numerical value |
| Reuse purifies water flow (t/h) | 100 | First-stage reverse osmosis membrane area (m2) | 400 |
| Device operation temperature (DEG C) | 40 | Two-pass reverse osmosis membrane area (m2) | 50 |
| Prefilter operating pressure (MPaG) | 3 | Three-level reverse osmosis membrane area (m2) | 7 |
| Reverse osmosis unit treatment and purification water accounts for the ratio between total amount (%) | 5 | Untreated reuse purified water Cl-Concentration (ppmw) | 10 |
| Reverse osmosis unit operating pressure (MPaG) | 2 | Untreated reuse purified water Fe2+Concentration (ppmw) | 3 |
| Reverse osmosis membrane water transport coefficient (kg/ (m2·h·MPa)) | 6.3 | Waste water accounts for the ratio between total reuse purified water (wt/wt) | < 0.05% |
Use the device treated first class purification water flow for 96t/h, Cl-Concentration is 2ppmw, and more untreated reuse is net
Change water Cl-Concentration reduces by 80%, Fe2+Concentration is 1ppmw, more untreated reuse purified water Fe2+Concentration reduces by 66.7%；Level-one is net
Change water and the untreated mixed flow of reuse purified water is 99.96t/h, Cl-Concentration is 9.6ppmw, and more untreated reuse is net
Change water Cl-Concentration reduces by 4%, Fe2+Concentration is 2.9ppmw, more untreated reuse purified water Fe2+Concentration reduces by 3.3%；Three-level is dense
Contracting flow quantity is 0.04t/h, accounts for 0.8% He of reverse osmosis unit treatment and purification water flow and total reuse purification water flow respectively
0.04%, Cl-Concentration is 1000ppmw, Fe2+Concentration is 251ppmw.
From the above experiments, it was found that multi-stage reverse osmosis technique is used for petrochemical industry and coal chemical industry by the utility model
Sewage stripping after purification water process, reduce reuse purified water in non-volatile impurities (Cl-Concentration, Fe2+Concentration) content
60% or more, level-one reuse purified water and the mixed reuse purified water Cl of untreated purified water-And Fe2+Concentration reduces respectively
4% and 3% or more, the circulative accumulation of reuse purification impurities in water is avoided, water quality can be effectively improved, reduces sewage solution after water filling
To the Flow Corrosion of equipment pipe, while only generating the waste water for being no more than reuse Water warfare total flow 0.05%, it can be ensured that reuse
The stably reaching standard of purified water water quality.
Embodiment 2: this example uses three-stage electrodialysis process improving reuse purified water water quality.
As shown in Fig. 2, device includes reuse purified water 20, prefilter 21, first-stage reverse osmosis device 25, first class purification water
Pump 28, second level reverse osmosis apparatus 31, secondary purification water pump 34, three-level reverse osmosis unit 35 and three-level clarified water pump 38；Reuse is net
Change entrance of 20 intake line of water to prefilter 21,21 upper layer of prefilter outlet discharge upper layer suspension 3, prefilter 21
Entrance of lower layer's outlet to first-stage reverse osmosis device 25,25 upper layer outlet of first-stage reverse osmosis device to two-pass reverse osmosis
The entrance of device 31, the outlet of 25 lower layer of first-stage reverse osmosis device are connected to 20 input pipe of reuse purified water through first class purification water pump 28
Road, the entrance of the upper layer outlet three-level reverse osmosis unit 35 of second level reverse osmosis apparatus 31, the lower layer of second level reverse osmosis apparatus 31 go out
Mouth is connected to the entrance of first-stage reverse osmosis device 25 through secondary purification water pump 34, and the upper layer of three-level reverse osmosis unit 35 exports discharge
Three-level concentrate 36, the lower layer of three-level reverse osmosis unit 35, which exports, is connected to second level reverse osmosis apparatus 31 through three-level clarified water pump 38
Entrance.
Concrete technology flow process is shown in Fig. 2, and the reuse purified water 20 from sewage stripping tower bottom and after exchanging heat shunts a part
Upper layer suspension, the level-one that another part reuse purified water 20 and first-stage reverse osmosis device 25 export are removed into prefilter 21
Purified water 27 forms untreated reuse purified water after mixing and the mixing water 29 of first class purification water enters stages.Through pre-filtering
Treated the pre-filtering water 23 of device 21 enters the multi-stage separation device with electrodialysis-ion exchange film: first passing through level-one electrodialysis
The isolated first class purification water 27 of device 25 and primary concentration liquid 26, first class purification water 27 return after the pressurization of first class purification water pump 28
Untreated reuse purified water and level-one are mixed to form to the input terminal of prefilter 21, and with untreated reuse purified water 20
The mixing water 29 of purified water, primary concentration liquid 26 enters the isolated secondary purification water 33 of second level electrodialysis plant 31 and second level is dense
Contracting liquid 32, secondary purification water 33 return to the input terminal of level-one electrodialysis plant 25 after the pressurization of secondary purification water pump 34, and with it is pre-
The mixing water 24 that drainage 23 is mixed to form pre-filtering water Yu secondary purification water is crossed, secondary concentration liquid 32 enters three-stage electrodialysis device
35 isolated three-level purified waters 37 and three-level concentrate 36, three-level purified water 37 return to two after the pressurization of three-level clarified water pump 38
The input terminal of grade electrodialysis plant 31, and three-level purified water and primary concentration liquid mixture are mixed to form with primary concentration liquid 26
30, three-level concentrate 36 goes out device and carries out follow up device processing.
Concrete technology flow process is shown in Fig. 2.The hydrogenation wastewater of certain petroleum chemical enterprise is through single column pressurization side line stripping process stripping, work
Skill data are shown in Table 2.Electrodialysis plant treating capacity is 9.6t/h, untreated reuse purified water Cl-Concentration is 15 μ g/g, Fe2+Concentration
For 5 μ g/g.
2 three-stage electrodialysis technological parameter of table
| Technological parameter title | Numerical value | Technological parameter title | Numerical value |
| Reuse purifies water flow (t/h) | 160 | Primary ion exchanges membrane area (m2) | 900 |
| Device operation temperature (DEG C) | 45 | Secondary ion exchanges membrane area (m2) | 120 |
| Prefilter operating pressure (MPa) | 2 | Three-level ion exchange membrane area (m2) | 15 |
| Electrodialysis plant treatment and purification water accounts for the ratio between total amount (%) | 6 | Untreated reuse purified water Cl-Concentration (ppmw) | 15 |
| Electrodialysis plant operates voltage (V) | 110 | Untreated reuse purified water Fe2+Concentration (ppmw) | 5 |
| Amberplex water transport coefficient (kg/ (m2·h·V)) | 0.01 | Waste water accounts for the ratio between total reuse purified water (wt/wt) | < 0.05% |
Use the device treated first class purification water flow for 9.547t/h, Cl-Concentration is 4ppmw, more untreated time
With purified water Cl-Concentration reduces by 73.3%, Fe2+Concentration is 2ppmw, more untreated reuse purified water Fe2+Concentration reduces by 60%；One
Grade purified water and the untreated mixed flow of reuse purified water are 159.95t/h, Cl-Concentration is 14.3ppmw, more untreated
Reuse purified water Cl-Concentration reduces by 4.7%, Fe2+Concentration is 4.8ppmw, more untreated reuse purified water Fe2+Concentration reduces by 4%；
Three-level concentrated solution discharge is 0.053t/h, accounts for electrodialysis plant treatment and purification water flow respectively and total reuse purifies water flow
0.55% and 0.033%, Cl-Concentration is 2000ppmw, Fe2+Concentration is 530ppmw.
From the above experiments, it was found that multistage electrodialysis technique is used for petrochemical industry and coal chemical industry by the utility model
Sewage stripping after purification water process, reduce reuse purified water in non-volatile impurities (Cl-Concentration, Fe2+Concentration) content
60% or more, level-one reuse purified water and the mixed reuse purified water Cl of untreated purified water-And Fe2+Concentration reduce by 4% with
On, the circulative accumulation of reuse purification impurities in water is avoided, water quality can be effectively improved, sewage solution is to equipment pipe after reducing water filling
Flow Corrosion, while only generate be no more than reuse Water warfare total flow 0.05% waste water, it can be ensured that reuse purified water water quality
Stably reaching standard.
In addition, reverse osmosis or electrodialysis separator the series of the utility model includes but is not limited to three-level, it can basis
Actual conditions select second level, three-level, level Four or more.For example, being will be in Fig. 1 for the reverse osmosis separating apparatus of second level
Three-level reverse osmosis unit 16 and three-level clarified water pump 19 are not placed；It is by three in Fig. 2 for the electrodialysis separator of second level
Grade electrodialysis plant 35 and three-level clarified water pump 38 are not placed.And reverse osmosis separating apparatus or electrodialysis separation for level Four
Level Four reverse osmosis unit or level Four electrodialysis is arranged in device again behind three-level reverse osmosis unit or three-stage electrodialysis device
Device, and add level Four clarified water pump and connect back to second level reverse osmosis apparatus or second level electrodialysis plant.And so on, work as setting
When n grades (n > 3) or more of reverse osmosis unit or electrodialysis plant, i.e., in n-1 grades of reverse osmosis units or n-1 grades of electrodialysis dresses
It postpones face and adds n-th grade of reverse osmosis unit or n-th grade of electrodialysis plant again, and add n-th grade of clarified water pump and connect back to n grades of reverse osmosis
Saturating device or n grades of electrodialysis plants.
Claims (6)
1. it is a kind of improve sewage stripping tower bottom reuse purified water water quality device, it is characterised in that: including prefilter (2),
First-stage reverse osmosis device (6), first class purification water pump (9), second level reverse osmosis apparatus (12), secondary purification water pump (15), three-level are anti-
Permeability apparatus (16) and three-level clarified water pump (19)；Reuse purified water (1) is connected to the entrance of prefilter (2) through pipeline, in advance
Upper layer suspension (3) are discharged by the road in the outlet of filter (2) upper layer, and the outlet of prefilter (2) lower layer is communicated to level-one by the road
The entrance of reverse osmosis unit (6), the outlet of first-stage reverse osmosis device (6) upper layer are communicated to second level reverse osmosis apparatus (12) by the road
Entrance, first-stage reverse osmosis device (6) lower layer export the intake line that reuse purified water (1) is connected to through first class purification water pump (9),
The upper layer outlet of second level reverse osmosis apparatus (12) is communicated to the inlet duct of three-level reverse osmosis unit (16), second level reverse osmosis by the road
The lower layer outlet of saturating device (12) is connected to the entrance of first-stage reverse osmosis device (6), three-level reverse osmosis through secondary purification water pump (15)
Three-level concentrate (17) are discharged by the road in the upper layer outlet of saturating device (16), and the lower layer of three-level reverse osmosis unit (16) exports through three
Grade clarified water pump (19) is connected to the inlet duct of second level reverse osmosis apparatus (12).
2. a kind of device for improving sewage stripping tower bottom reuse purified water water quality according to claim 1, feature exist
In: the reuse purified water (1) from sewage stripping tower bottom and after exchanging heat shunts a part and enters prefilter (2) removing upper layer
Shape after first class purification water (8) mixing of suspended matter (3), another part reuse purified water (1) and first-stage reverse osmosis device (6) output
It is discharged at the mixing water (10) of untreated reuse purified water and first class purification water；Pre-filtering is obtained after prefilter (2) processing
Water (4) simultaneously enters the multi-stage separation device with reverse osmosis membrane:
By the isolated first class purification water (8) of first-stage reverse osmosis device (6) and primary concentration liquid (7), first class purification water (8) warp
It is formed after being mixed after first class purification water pump (9) pressurization with the reuse purified water (1) that another part does not enter prefilter (2) and is not located
Reason reuse purified water and the mixing water (10) of first class purification water are discharged afterwards；Primary concentration liquid (7) enters second level reverse osmosis apparatus
(12), through the isolated secondary purification water (14) of second level reverse osmosis apparatus (12) and secondary concentration liquid (13), secondary purification water
(14) input terminal that first-stage reverse osmosis device (6) is returned to after secondary purification water pump (15) pressurization mixes shape with pre-filtering water (4)
At the mixing water (5) of pre-filtering water and secondary purification water；Secondary concentration liquid (13) enters three-level reverse osmosis unit (16), through three-level
The isolated three-level purified water (18) of reverse osmosis unit (16) and three-level concentrate (17), three-level purified water (18) are purified through three-level
The input terminal of second level reverse osmosis apparatus (12) is returned to after water pump (19) pressurization and primary concentration liquid (7) are mixed to form three-level purified water
With primary concentration liquid mixture (11), three-level concentrate (17) discharger carries out subsequent processing.
3. a kind of device for improving sewage stripping tower bottom reuse purified water water quality according to claim 2, feature exist
In: the upper layer suspended matter (3) includes suspended particulate and oil.
4. a kind of device for improving sewage stripping tower bottom reuse purified water water quality, it is characterised in that:
Including prefilter (21), level-one electrodialysis plant (25), first class purification water pump (28), second level electrodialysis plant (31),
Secondary purification water pump (34), three-stage electrodialysis device (35) and three-level clarified water pump (38)；Reuse purified water (20) connects through pipeline
It is connected to the entrance of prefilter (21), upper layer suspension (22) are discharged by the road in the outlet of prefilter (21) upper layer, prefilter
(21) lower layer outlet is communicated to the entrance of level-one electrodialysis plant (25), level-one electrodialysis plant (25) upper layer outlet warp by the road
Pipeline connection is to the entrance of second level electrodialysis plant (31), and the outlet of level-one electrodialysis plant (25) lower layer is through first class purification water pump
(28) it is connected to the intake line of reuse purified water (20), the upper layer outlet of second level electrodialysis plant (31) is communicated to three by the road
The lower layer outlet of the inlet duct of grade electrodialysis plant (35), second level electrodialysis plant (31) is connected through secondary purification water pump (34)
Three-level concentrate is discharged by the road to the upper layer outlet of the entrance of level-one electrodialysis plant (25), three-stage electrodialysis device (35)
(36), the lower layer of three-stage electrodialysis device (35), which exports, is connected to second level electrodialysis plant (31) through three-level clarified water pump (38)
Inlet duct.
5. a kind of device for improving sewage stripping tower bottom reuse purified water water quality according to claim 4, feature exist
In: the reuse purified water (20) from sewage stripping tower bottom and after exchanging heat shunts a part and enters in prefilter (21) removing
The first class purification water (27) of layer suspended matter (22), another part reuse purified water (20) and level-one electrodialysis plant (25) output is mixed
The mixing water (29) of untreated reuse purified water Yu first class purification water is formed after conjunction；Pre- mistake is obtained after prefilter (21) processing
Drainage (23) simultaneously enters the multi-stage separation device with electrodialysis-ion exchange film:
By the isolated first class purification water (27) of level-one electrodialysis plant (25) and primary concentration liquid (26), first class purification water
(27) reuse purified water (20) mixing of prefilter (21) is not entered with another part after first class purification water pump (28) pressurization
The mixing water (29) for forming untreated reuse purified water and first class purification water afterwards is discharged afterwards；Primary concentration liquid (26) enters second level electricity
Electrodialysis apparatus (31), through the isolated secondary purification water (33) of second level electrodialysis plant (31) and secondary concentration liquid (32), second level
Purified water (33) returns to the input terminal and pre-filtering water of level-one electrodialysis plant (25) after secondary purification water pump (34) pressurize
(23) it is mixed to form the mixing water (24) of pre-filtering water Yu secondary purification water, secondary concentration liquid (32) enters three-stage electrodialysis device
(35), through the isolated three-level purified water (37) of three-stage electrodialysis device (35) and three-level concentrate (36), three-level purified water
(37) input terminal and primary concentration liquid (26) that second level electrodialysis plant (31) is returned to after three-level clarified water pump (38) pressurization are mixed
Conjunction forms three-level purified water and primary concentration liquid mixture (30), and three-level concentrate (36) discharger carries out subsequent processing.
6. a kind of device for improving sewage stripping tower bottom reuse purified water water quality according to claim 5, feature exist
In: the upper layer suspended matter (22) includes suspended particulate and oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820135639.4U CN208234640U (en) | 2018-01-26 | 2018-01-26 | A kind of device improving sewage stripping tower bottom reuse purified water water quality |
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|---|---|---|---|
| CN201820135639.4U CN208234640U (en) | 2018-01-26 | 2018-01-26 | A kind of device improving sewage stripping tower bottom reuse purified water water quality |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498478A (en) * | 2019-09-21 | 2019-11-26 | 佛山市云米电器科技有限公司 | Split type reverse osmosis filter element device and water purifier |
| CN114230106A (en) * | 2021-12-28 | 2022-03-25 | 上海淼清水处理有限公司 | Oil refining wastewater treatment method |
-
2018
- 2018-01-26 CN CN201820135639.4U patent/CN208234640U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498478A (en) * | 2019-09-21 | 2019-11-26 | 佛山市云米电器科技有限公司 | Split type reverse osmosis filter element device and water purifier |
| CN110498478B (en) * | 2019-09-21 | 2024-03-15 | 广东栗子科技有限公司 | Split type reverse osmosis filter element device and water purifier |
| CN114230106A (en) * | 2021-12-28 | 2022-03-25 | 上海淼清水处理有限公司 | Oil refining wastewater treatment method |
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