CN205917059U - Chemical plant waste liquid treatment device - Google Patents
Chemical plant waste liquid treatment device Download PDFInfo
- Publication number
- CN205917059U CN205917059U CN201620942392.8U CN201620942392U CN205917059U CN 205917059 U CN205917059 U CN 205917059U CN 201620942392 U CN201620942392 U CN 201620942392U CN 205917059 U CN205917059 U CN 205917059U
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- liquid waste
- pipe
- liquid
- waste processing
- cylinder
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Abstract
The utility model discloses a chemical plant waste liquid treatment device mainly relates to waste water, waste liquid treatment device field. Including liquid water disposal jar, liquid water disposal pipe, PH sensor and control system, be equipped with the sparge pipe on the liquid water disposal pipe, be equipped with the liquid spraying valve door on the sparge pipe, the liquid water disposal pipe is including acid pipe and basicity pipe, control system includes treater and the controller of being connected with the treater, the treater is connected with the PH sensor, the controller is connected with feed liquor valve, play liquid valve, liquid spraying valve door and inlet valve respectively. The utility model has the advantages of the utility model discloses can carry out the more thoroughly that handles to the waste liquid in chemical plant, the processing procedure is simple moreover, has alleviateed manpower and materials, can control the quantity of neutralization reaction agent in the processing procedure effectively, and liquid water disposal accomplishes the back to installing the inside effectual washing of carrying on, and the life of increase device has alleviateed the environmental pollution in the chemical plant.
Description
Technical field
This utility model is related to waste water, liquid waste treating apparatus field, specifically a kind of chemical plant liquid waste treating apparatus.
Background technology
Currently for the waste liquid waste water of chemical plant emission, existing processing method is by adding in liquid waste treating apparatus
Reinforcing body neutralization reaction agent or liquid neutralization reaction agent are neutralized reaction, and waste liquid is processed, but this method have following
Drawback:
When the 1st, carrying out liquid waste processing, need the acid-base value of manual testing's waste liquid, add needed for then again by calculating to determine
Plus the consumption of neutralization reaction agent, not only wasting manpower and material resources, and process loaded down with trivial details it is often more important that the neutralization reaction agent added
Consumption can when many when few it is extremely difficult to precise control, not only cause to waste, and liquid waste processing be not thorough, effect is poor.
When the 2nd, adding solid neutralization reaction agent, solid reactants can sink to liquid waste treating apparatus bottom, leads to top surface
Waste liquid cannot effective neutralisation treatment, when continue add solid neutralization reaction agent when, neutralization reaction agent has very big one
Divide and sink to liquid waste treating apparatus bottom, cause to waste, not only liquid waste processing efficiency is slow, effect is poor, and increases the cost of enterprise.
On the contrary, during adding liquid neutralization reaction agent, liquid reactant and the waste liquid on surface are neutralized reaction, can only effectively process table
The waste liquid in face, the waste liquid of liquid waste treating apparatus bottom is even more difficult to process, and the effect of liquid waste processing is extremely difficult to emission request.
3rd, after liquid waste processing finishes, cannot clean inside liquid waste treating apparatus, get off for a long time and remain in inside device
Residual liquid or solid neutralization reaction agent can corrosion device inwall, and can lead to have very niff inside device, not only
Reduce the service life of device, but also contaminated air environment, so that the air ambient in chemical plant is polluted serious all the more.
Utility model content
The purpose of this utility model is to provide a kind of chemical plant liquid waste treating apparatus, and it can enter to the waste liquid in chemical plant
It is more thorough that row is processed, and processing procedure is simple, alleviates manpower and materials, can efficiently control neutralization in processing procedure
The consumption of reactant, is effectively cleaned to device inside after the completion of liquid waste processing, increases the service life of device, alleviates
Environmental pollution in chemical plant.
This utility model for achieving the above object, employs the following technical solutions:
A kind of chemical plant liquid waste treating apparatus, including liquid waste processing cylinder, liquid waste processing pipe, ph sensor and control system,
Described liquid waste processing cylinder one sidewall bottom is provided with liquid outlet, is provided with drain pipe and liquid valve door at described liquid outlet, described go out liquid
Pipe stretches out liquid outlet and water passage, and described liquid waste processing cylinder is provided with inlet away from liquid outlet side top side wall, described
Inlet is fixedly connected with feed tube, and described feed tube and inlet junction are provided with liquid flowing valve, described liquid waste processing cylinder top
It is provided with water inlet near inlet side, described water inlet is fixedly connected with water inlet pipe, described water inlet pipe and water inlet on wall
Junction is provided with inlet valve, and described liquid waste processing pipe passes through liquid waste processing cylinder one side wall and relative liquid waste processing cylinder side wall
It is fixedly connected, described liquid waste processing pipe is provided with sparge pipe, described sparge pipe is provided with hydrojet valve, described liquid waste processing pipe bag
Include acid pipe and alkalescence pipe, described ph sensor is arranged at liquid waste processing cylinder inside sidewalls, and described ph sensor base is provided with survey
Examination contact, described control system includes processor and the controller being connected with processor, and described processor is connected with ph sensor,
Described controller is connected with liquid flowing valve, liquid valve door, hydrojet valve and inlet valve respectively.
It is provided with protection sleeve pipe outside described liquid waste processing pipe, between described liquid waste processing pipe and protection sleeve pipe, be provided with cavity,
It is provided with pilot in described cavity, be connected by pilot between described hydrojet valve and controller.
It is filled with strong water absorption function cotton in described cavity.
Also include control chamber, described control chamber is arranged at below ground, described control box top is provided with chamber door, described chamber door
It is provided with the first in command, described controller and processor are located in control chamber.
Also include storage tank, described the bottom of storage tank is provided with dewatering outlet, described dewatering outlet is connected with water inlet pipe one end, described
Storage tank top sidewall is provided with water storage mouth, and described water storage mouth is connected with outside running water pipe.
Described liquid waste processing cylinder roof is provided with cylinder door, and described cylinder door one end is hinged with liquid waste processing cylinder roof, described cylinder
The door other end is provided with the second in command with liquid waste processing cylinder side wall overlap joint, described cylinder door and liquid waste processing Gang Ce wall lap-joint.
Described liquid waste processing pipe is 3～6 layers, 8～15 row, and described liquid waste processing pipe is whole along rectangle in liquid waste processing cylinder
Column distribution.
Contrast prior art, the beneficial effects of the utility model are:
1st, this utility model includes liquid waste processing cylinder, liquid waste processing pipe, ph sensor and control system, by ph sensor
The acid-base value of waste liquid can be tested, the acid-base value of waste liquid determines and controls the acid pipe of Systematic selection or alkali when carrying out liquid waste processing
Property pipe carries out hydrojet neutralization, and liquid waste processing Gutron is crossed during hydrojet processes to waste liquid, and ph sensor is constantly given up
The measurement of liquid ph value, when ph reaches emission request, ph sensor sends signal to control system, stops hydrojet, opens out liquid
Valve, will process the discharging of waste liquid completing to sewer.In waste treatment process, because the precipitation that reaction generates can sink to device
Bottom, after the completion of discharge, opens inlet valve, and device inside is rinsed, by this chemical plant of this utility model waste liquid
Processing meanss, can obtain more thorough to the liquid waste processing in chemical plant, and processing procedure is simple, decreases manpower and materials, place
The consumption of neutralization reaction agent can be efficiently controlled during reason, after the completion of liquid waste processing, device inside is carried out effectively clear
Wash, increase the service life of device, alleviate the environmental pollution in chemical plant.
2nd, it is provided with protection sleeve pipe outside liquid waste processing pipe, between liquid waste processing pipe and protection sleeve pipe, be provided with cavity, in cavity
It is provided with pilot, be connected by pilot between hydrojet valve and controller.By setting protection sleeve pipe, by liquid waste processing
Pipe is kept apart with waste liquid, prevents waste liquid corrosion liquid waste processing pipe, is provided with cavity simultaneously between liquid waste processing pipe and protection sleeve pipe,
It is provided with pilot it is ensured that being connected between hydrojet valve and controller in cavity.
3rd, it is filled with strong water absorption function cotton in cavity, when the neutralization reaction agent in waste liquid or liquid waste processing pipe leaks into cavity
When interior, it is prevented from waste liquid or neutralization reaction agent corrosion control wire, makes line interruption damage device.
4th, by control chamber is arranged on below ground, it is to avoid control chamber takies the work space in chemical plant, control
Box top is provided with chamber door, when control system breaks down, can easily open control chamber and be keeped in repair.
5th, pass through to arrange storage tank, it is to avoid due to the inconvenience that device inwall can not be carried out and brings when cutting off the water.
6th, liquid waste processing cylinder roof is provided with cylinder door, and cylinder door one end is hinged with liquid waste processing cylinder roof, the cylinder door other end with
Liquid waste processing cylinder side wall overlap joint, when liquid waste processing blockage or the liquid outlet blocking of liquid waste processing cylinder interior, by opening
Cylinder door, can be dredged to it and be repaired, and cylinder door and liquid waste processing Gang Ce wall lap-joint are provided with the second in command, can be more square
Just open cylinder door.
7th, liquid waste processing pipe is set to 3～6 layers, 8～15 row, when carrying out liquid waste processing, the neutralization that sparge pipe sprays is anti-
Answer agent can cover whole level, more thoroughly carry out liquid waste processing.
Brief description
Accompanying drawing 1 is this utility model structural representation；
Accompanying drawing 2 is liquid waste processing cylinder concrete structure schematic diagram in this utility model；
Accompanying drawing 3 is sparge pipe and liquid waste processing pipe connected mode schematic diagram in this utility model；
Label shown in accompanying drawing:
1st, liquid waste processing cylinder；2nd, liquid waste processing pipe；3rd, ph sensor；4th, liquid outlet；5th, drain pipe；6th, liquid valve door；7、
Inlet；8th, feed tube；9th, liquid flowing valve；10th, water inlet；11st, water inlet pipe；12nd, inlet valve；13rd, sparge pipe；14th, hydrojet
Valve；15th, acid pipe；16th, alkalescence pipe；17th, test contact；18th, processor；19th, controller；20th, protect sleeve pipe；21st, strongly
Absorbent cotton；22nd, control chamber；23rd, chamber door；24th, the first in command；25th, storage tank；26th, dewatering outlet；27th, water storage mouth；28th, cylinder door；
29th, the second in command.
Specific embodiment
With reference to specific embodiment, this utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than restriction scope of the present utility model.In addition, it is to be understood that in the content having read this utility model instruction
Afterwards, those skilled in the art can make various changes or modifications to this utility model, and these equivalent form of values equally fall within this Shen
Please limited range.
Described in the utility model is a kind of chemical plant liquid waste treating apparatus, and agent structure includes liquid waste processing cylinder 1, at waste liquid
Reason pipe 2, ph sensor 3 and control system, described liquid waste processing cylinder 1 one sidewall bottom is provided with liquid outlet 4, at described liquid outlet 4
Be provided with drain pipe 5 and liquid valve door 6, described drain pipe 5 stretches out liquid outlet 4 and water passage, described liquid waste processing cylinder 1 away from
Liquid outlet 4 side top side wall is provided with inlet 7, and described inlet 7 is fixedly connected with feed tube 8, described feed tube 8 and feed liquor
Mouth 7 junctions are provided with liquid flowing valve 9, and described liquid waste processing cylinder 1 roof is provided with water inlet 10 near inlet 7 side, described
It is fixedly connected with water inlet pipe 11, described water inlet pipe 11 is provided with inlet valve 12 with water inlet 10 junction, described at water inlet 10
Liquid waste processing pipe 2 is fixedly connected with relative liquid waste processing cylinder 1 side wall, at described waste liquid through liquid waste processing cylinder 1 one side wall
Reason pipe 2 is provided with sparge pipe 13, and described sparge pipe 13 is provided with hydrojet valve 14, and described liquid waste processing pipe 2 includes acid pipe 15
With alkaline pipe 16, described ph sensor 3 is arranged at liquid waste processing cylinder 1 inside sidewalls, and described ph sensor 3 bottom is provided with test and touches
17, described control system includes processor 18 and the controller 19 being connected with processor 18, described processor 18 and ph sensing
Device 3 connects, and described controller 19 is connected with liquid flowing valve 9, liquid valve door 6, hydrojet valve 14 and inlet valve 12 respectively.
In order to protect the connection between liquid waste processing pipe 2 and guarantee hydrojet valve 14 and controller 19, described liquid waste processing
It is provided with protection sleeve pipe 20 outside pipe 2, be provided with cavity between described liquid waste processing pipe 2 and protection sleeve pipe 20, be provided with described cavity
Pilot, is connected by pilot between described hydrojet valve 14 and controller 19.By setting protection sleeve pipe 20, will give up
Liquid processing tube 2 and waste liquid are kept apart, and prevent waste liquid corrosion liquid waste processing pipe 2, simultaneously liquid waste processing pipe 2 and protection sleeve pipe 20 it
Between be provided with cavity, be provided with pilot in cavity it is ensured that being connected between hydrojet valve 14 and controller 19.
In order to protect pilot, in described cavity, it is filled with strong water absorption function cotton 21.When in waste liquid or liquid waste processing pipe 2
Neutralization reaction agent when leaking in cavity, strong water absorption function cotton 21 can siphon away the liquid leaking in cavity, prevents from leaking into
The waste liquid coming or neutralization reaction agent corrosion control wire, make line interruption and damage the use of device.
For Protection control system and the work space avoiding occupancy chemical plant, also include control chamber 22, described control chamber
22 are arranged at below ground, and described control chamber 22 top is provided with chamber door 23, and described chamber door 23 is provided with the first in command 24, described control
Device 19 processed and processor 18 are located in control chamber 22.When control system breaks down, can easily open control chamber 22 and carry out
Maintenance.
In order to be carried out to device inside when preventing from cutting off the water, also include storage tank 25, described storage tank 25
Bottom is provided with dewatering outlet 26, and described dewatering outlet 26 is connected with water inlet pipe 11 one end, and described storage tank 25 top sidewall is provided with storage
The mouth of a river 27, described water storage mouth 27 is connected with outside running water pipe.Water in storage tank 25 opens water storage mouth 27 after being finished, to water storage
Case 25 carries out water storage.
In order to preferably, to carrying out breakdown maintenance inside liquid waste processing cylinder 1, described liquid waste processing cylinder 1 roof is provided with cylinder door
28, described cylinder door 28 one end is hinged with liquid waste processing cylinder 1 roof, and described cylinder door 28 other end is overlapped with liquid waste processing cylinder 1 side wall,
Described cylinder door 28 is provided with the second in command 29 with liquid waste processing cylinder 1 Ce Bi lap-joint.Liquid waste processing pipe within when liquid waste processing cylinder 1
When 2 blockings or liquid outlet 4 blocking, by opening cylinder door 28, it can be dredged and be repaired, cylinder door 28 and liquid waste processing
Cylinder 1 Ce Bi lap-joint is provided with the second in command 29, can be convenient open cylinder door 28.
In order to more thorough to liquid waste processing, described liquid waste processing pipe 2 is 3～6 layers, 8～15 row, and at described waste liquid
Reason pipe 2 is distributed along rectangle permutation in liquid waste processing cylinder 1.When carrying out liquid waste processing, the neutralization reaction agent that sparge pipe sprays can
Cover whole level, more thoroughly carry out liquid waste processing.
During use, open liquid flowing valve 9, constantly enter with the waste liquid in liquid waste processing cylinder 1, when liquid level reaches test
During the horizontal plane that contact 17 is located, ph sensor 3 receives signal and passes to processor 18, and processor 18 passes to controller 19, control
Device 19 processed controls inlet valve 12 to cut out, and stops feed liquor, and ph sensor 3 carries out the detection of waste liquid ph value, by detect
Signal passes to processor 18, and processor 18 carries out signal processing, the signal of process is passed to controller 19, when waste liquid is alkalescence
When, controller 19 controls the hydrojet valve 14 of acid pipe 15 to open and carries out hydrojet, and when waste liquid is acid, controller 19 controls alkali
The hydrojet valve 14 of property pipe 16 is opened and is carried out hydrojet, and ph sensor 3 constantly carries out waste liquid ph value in waste treatment process
Detection, to ph reach emission request when, signal is passed to processor 18 by ph sensor 3, and processor 18 carries out signal processing, will
The signal processing passes to controller 19, and controller 19 controls hydrojet valve 14 to cut out, and liquid valve door 6 is opened simultaneously, will process
The discharging of waste liquid becoming is opened inlet valve 12 and is carried out inside device to sewer, then controller 19, after the completion of cleaning,
Liquid valve door 6 and inlet valve 12 are closed, completes whole waste treatment process.
Embodiment 1:
Described in the utility model is a kind of chemical plant liquid waste treating apparatus, and agent structure includes liquid waste processing cylinder 1, at waste liquid
Reason pipe 2, ph sensor 3 and control system, described liquid waste processing cylinder 1 one sidewall bottom is provided with liquid outlet 4, at described liquid outlet 4
Be provided with drain pipe 5 and liquid valve door 6, described drain pipe 5 stretches out liquid outlet 4 and water passage, described liquid waste processing cylinder 1 away from
Liquid outlet 4 side top side wall is provided with inlet 7, and described inlet 7 is fixedly connected with feed tube 8, described feed tube 8 and feed liquor
Mouth 7 junctions are provided with liquid flowing valve 9, and described liquid waste processing cylinder 1 roof is provided with water inlet 10 near inlet 7 side, described
It is fixedly connected with water inlet pipe 11, described water inlet pipe 11 is provided with inlet valve 12 with water inlet 10 junction, described at water inlet 10
Liquid waste processing pipe 2 is fixedly connected with relative liquid waste processing cylinder 1 side wall, at described waste liquid through liquid waste processing cylinder 1 one side wall
Reason pipe 2 is provided with sparge pipe 13, and described sparge pipe 13 is provided with hydrojet valve 14, and described liquid waste processing pipe 2 includes acid pipe 15
With alkaline pipe 16, described ph sensor 3 is arranged at liquid waste processing cylinder 1 inside sidewalls, and described ph sensor 3 bottom is provided with test and touches
17, described control system includes processor 18 and the controller 19 being connected with processor 18, described processor 18 and ph sensing
Device 3 connects, and described controller 19 is connected with liquid flowing valve 9, liquid valve door 6, hydrojet valve 14 and inlet valve 12 respectively.Described
It is provided with protection sleeve pipe 20 outside liquid waste processing pipe 2, be provided with cavity between described liquid waste processing pipe 2 and protection sleeve pipe 20, described sky
Intracavity is provided with pilot, is connected by pilot between described hydrojet valve 14 and controller 19.Filling in described cavity
There is strong water absorption function cotton 21.Also include control chamber 22, described control chamber 22 is arranged at below ground, described control chamber 22 top is provided with
Chamber door 23, described chamber door 23 is provided with the first in command 24, and described controller 19 and processor 18 are located in control chamber 22.Also include
Storage tank 25, described storage tank 25 bottom is provided with dewatering outlet 26, and described dewatering outlet 26 is connected with water inlet pipe 11 one end, described water storage
Case 25 top sidewall is provided with water storage mouth 27, and described water storage mouth 27 is connected with outside running water pipe.Described liquid waste processing cylinder 1 roof
It is provided with cylinder door 28, described cylinder door 28 one end is hinged with liquid waste processing cylinder 1 roof, described cylinder door 28 other end and liquid waste processing cylinder
1 side wall overlap joint, described cylinder door 28 is provided with the second in command 29 with liquid waste processing cylinder 1 Ce Bi lap-joint.Described liquid waste processing pipe 2 is 3
～6 layers, 8～15 row, and described liquid waste processing pipe 2 liquid waste processing cylinder 1 in along rectangle permutation distribution.
Claims (7)
1. a kind of chemical plant liquid waste treating apparatus it is characterised in that: include liquid waste processing cylinder (1), liquid waste processing pipe (2), ph pass
Sensor (3) and control system, described liquid waste processing cylinder (1) sidewall bottom is provided with liquid outlet (4), and described liquid outlet (4) place sets
There are drain pipe (5) and liquid valve door (6), described drain pipe (5) stretches out liquid outlet (4) and water passage, described liquid waste processing
Cylinder (1) is provided with inlet (7) away from liquid outlet (4) side top side wall, and described inlet (7) is fixedly connected with feed tube (8),
Described feed tube (8) and inlet (7) junction are provided with liquid flowing valve (9), near feed liquor on described liquid waste processing cylinder (1) roof
Mouthful (7) side is provided with water inlet (10), and described water inlet (10) place is fixedly connected with water inlet pipe (11), described water inlet pipe (11) with
Water inlet (10) junction is provided with inlet valve (12), described liquid waste processing pipe (2) pass through liquid waste processing cylinder (1) side wall with
Relative liquid waste processing cylinder (1) side wall is fixedly connected, and described liquid waste processing pipe (2) is provided with sparge pipe (13), described sparge pipe
(13) it is provided with hydrojet valve (14), described liquid waste processing pipe (2) includes acid pipe (15) and alkalescence pipe (16), described ph sensing
Device (3) is arranged at liquid waste processing cylinder (1) inside sidewalls, and described ph sensor (3) bottom is provided with test contact (17), described control
System includes processor (18) and the controller (19) being connected with processor (18), described processor (18) and ph sensor (3)
Connect, described controller (19) is respectively with liquid flowing valve (9), liquid valve door (6), hydrojet valve (14) and inlet valve (12) even
Connect.
2. a kind of chemical plant liquid waste treating apparatus according to claim 1 it is characterised in that: described liquid waste processing pipe (2)
Outside is provided with protection sleeve pipe (20), is provided with cavity, sets in described cavity between described liquid waste processing pipe (2) and protection sleeve pipe (20)
There is pilot, be connected by pilot between described hydrojet valve (14) and controller (19).
3. a kind of chemical plant liquid waste treating apparatus according to claim 2 it is characterised in that: be filled with strong in described cavity
Power absorbent cotton (21).
4. a kind of chemical plant liquid waste treating apparatus according to claim 1 it is characterised in that: also include control chamber (22),
Described control chamber (22) is arranged at below ground, and described control chamber (22) top is provided with chamber door (23), and described chamber door (23) sets
The first in command (24), described controller (19) and processor (18) is had to be located in control chamber (22).
5. a kind of chemical plant liquid waste treating apparatus according to claim 1 it is characterised in that: also include storage tank (25),
Described storage tank (25) bottom is provided with dewatering outlet (26), and described dewatering outlet (26) is connected with water inlet pipe (11) one end, described water storage
Case (25) top sidewall is provided with water storage mouth (27), and described water storage mouth (27) is connected with outside running water pipe.
6. a kind of chemical plant liquid waste treating apparatus according to claim 1 it is characterised in that: described liquid waste processing cylinder (1)
Roof is provided with cylinder door (28), and described cylinder door (28) one end is hinged with liquid waste processing cylinder (1) roof, described cylinder door (28) other end
With liquid waste processing cylinder (1) side wall overlap joint, described cylinder door (28) and liquid waste processing cylinder (1) Ce Bi lap-joint are provided with the second in command
(29).
7. a kind of chemical plant liquid waste treating apparatus according to claim 1 it is characterised in that: described liquid waste processing pipe (2)
For 3～6 layers, 8～15 row, and described liquid waste processing pipe (2) liquid waste processing cylinder (1) in along rectangle permutation distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620942392.8U CN205917059U (en) | 2016-08-25 | 2016-08-25 | Chemical plant waste liquid treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620942392.8U CN205917059U (en) | 2016-08-25 | 2016-08-25 | Chemical plant waste liquid treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205917059U true CN205917059U (en) | 2017-02-01 |
Family
ID=57869025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620942392.8U Expired - Fee Related CN205917059U (en) | 2016-08-25 | 2016-08-25 | Chemical plant waste liquid treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205917059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107777767A (en) * | 2017-11-30 | 2018-03-09 | 徐州工程学院 | A kind of chemical waste fluid sewage is sustained processing unit |
-
2016
- 2016-08-25 CN CN201620942392.8U patent/CN205917059U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107777767A (en) * | 2017-11-30 | 2018-03-09 | 徐州工程学院 | A kind of chemical waste fluid sewage is sustained processing unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 Termination date: 20180825 |