CN206692401U - The processing unit of high concentration hard-degraded organic waste water - Google Patents
The processing unit of high concentration hard-degraded organic waste water Download PDFInfo
- Publication number
- CN206692401U CN206692401U CN201720397123.2U CN201720397123U CN206692401U CN 206692401 U CN206692401 U CN 206692401U CN 201720397123 U CN201720397123 U CN 201720397123U CN 206692401 U CN206692401 U CN 206692401U
- Authority
- CN
- China
- Prior art keywords
- water
- retort
- processing unit
- waste water
- high concentration
- 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.)
- Expired - Fee Related
Links
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model discloses a kind of processing unit of high concentration hard-degraded organic waste water, including：Mixing wastewater with air portion, the bottom of processing unit, including gas-water mixing cavity are arranged on, are provided with the water inlet of input waste water and the air inlet of input gas, be arranged on the water distributing tray of mixing wastewater with air intracavitary, and blow-down pipe；Core processing portion, it is arranged on above mixing wastewater with air portion, including retort, the water distributing tray of mixing wastewater with air intracavitary is passed into retort, the bottom electrode of lower section in retort is arranged on, the Top electrode of top in retort is arranged on, is arranged on probe tube in retort and in communication, the stirrer paddle being arranged in retort, the conducting sphere being covered with retort；Discharge portion, core processing portion top, including drain chamber are arranged on, are arranged on the water leg of drain chamber periphery, are provided with drainpipe on water leg, blast pipe is provided with above drain chamber.It is bad to solve prior art high concentration hard-degraded organic waste water treatment effect, the problem of cost is high, compliance rate is low.
Description
Technical field
The present invention relates to environmental project and waste water treatment engineering technical field, especially, is related to a kind of high-concentration hardly-degradable
The processing unit of organic wastewater.
Background technology
The processing of high concentration hard-degraded organic waste water, it is the problem that sewage disposal circle both at home and abroad is generally acknowledged at present.For this kind of
Waste water, studying both at home and abroad at present more have coking chemical waste water, pharmacy waste water (including traditional Chinese medicine wastewater), petrochemical industry/oils waste water, spins
Knit/professional the waste water such as dyeing waste water, wastewater from chemical industry, paint waste water.So-called high concentration, refer to the organic concentration of this kind of waste water
It is higher (in terms of COD), it is generally tens of thousands of to ten tens of thousands of milligrams in more than 2000mg/L, even as high as every liter of some；So-called difficult drop
Solution, refers to that the biodegradability of this kind of waste water is relatively low (BOD5/COD values are even lower generally below 0.3), it is difficult to biology drop
Solution.So in the industry generally by COD concentration be more than 2000mg/L, BOD5/COD value be less than 0.3 organic wastewater be collectively referred to as it is highly concentrated
Spend organic wastewater with difficult degradation thereby.Due to high concentration hard-degraded organic waste water produce and itself the characteristics of attribute, have following main danger
Evil：
First, aerobism endangers：Due to biodegradation, high concentrated organic wastewater can make receiving water body anoxic or even detest
Death so as to produce stench, is deteriorated water quality and environment by oxygen, most aquatic organisms；Second, sense organ contact scar：High concentrated organic wastewater
Water body is lost use value, more have a strong impact on the normal life of the nearby water bodies people；Third, causing toxicity harm：Superelevation is dense
Contain a large amount of toxic organic compounds in degree organic wastewater, can constantly accumulate, store in the natural environments such as water body, soil, it is most laggard
Enter human body, be detrimental to health.
High concentration hard-degraded organic waste water treatment technology can be divided into three classes：Materializing strategy technology, chemical treatment method and
Biologic treating technique.
1st, materializing strategy technology
Physico-chemical process is applied to treatment of Organic Wastewater frequently as a kind of means of pretreatment, and the purpose of pretreatment is to pass through recovery
Useful component in waste water, or some difficult for biological degradation things are handled, so as to reach organics removal, biochemical is improved,
Biochemical treatment load is reduced, improves treatment effeciency.Typically conventional physico-chemical process has extraction, absorption method, concentration method, ultrasonic wave drop
Solution.
2nd, chemical treatment method
Chemical treatment method is that the pollutant component in waste water is converted into harmless object by applied chemistry principle and chemical action
Matter, the method for being purified waste water.Chemical oxidization method is divided into two major classes, and one kind is to utilize strong oxidizer at normal temperatures and pressures
(such as hydrogen peroxide, potassium permanganate, hypochlorite, ozone) is by the oxidation operation in waste water into carbon dioxide and water；It is another
Class is organic matter in Decomposition Wastewater, including supercritical water oxidation and wet-air oxidation technique at high temperature under high pressure, oxidation used
Agent is usually oxygen or hydrogen peroxide, typically uses catalyst degradation reaction condition, accelerates reaction rate.Chemical oxidization method reacts
Speed is fast, control is simple, but cost is higher, is generally difficult to the step of organic matter one of difficult degradation being oxidized to inorganic substances, and mesh
The research of the preceding control to intermediate product is less.The technology also uses often as the preprocess method of biochemical treatment.Its is main
Method have burning method, Ozonation, electrochemical oxidation process etc..
3rd, biologic treating technique
Biological treatment is the main technique of purification of waste water, mainly for the treatment of the organic waste of the industries such as agricultural chemicals, printing and dyeing, pharmacy
Water.Biological treatment is to be decomposed using the metabolism of microorganism, converted toxic and harmful substance in water body and other
The biotechnology of various exceeded components, the place of degradation are mainly the activated sludge containing microorganism, biomembrane and its corresponding
Reactor, be thus born different kind organism treatment technology.Microbial method is not only economical, safety, and the dirt handled
Dye thing threshold value is low, remains less, non-secondary pollution, there is preferable application prospect.According to the difference of reaction condition, microorganism treatment
Aerobic biological process and the major class of anaerobic bio-treated two can be divided into.
At present, the processing method more generally used is substantially biologic treating technique, and materializing strategy and chemical treatment
Based on pretreatment or advanced treating supplement, in the hope of reaching preferable degree for the treatment of.But the place of high-concentration hardly-degradable waste water
Reason, turn into generally acknowledged problem because of the particularity of waste water, under conditions of high disposal cost and high maintenance administration fee, it is difficult to
Every profession and trade relevant emission standards are met by the above method.
Utility model content
The utility model provides a kind of processing unit of high concentration hard-degraded organic waste water, and it is highly concentrated to solve prior art
Spend the problem of organic wastewater with difficult degradation thereby treatment effect is bad, and cost is high, compliance rate is low.
The utility model solves technical problem and adopted the following technical scheme that：A kind of processing of high concentration hard-degraded organic waste water
Device, it is characterised in that including：
Mixing wastewater with air portion, the bottom of processing unit, including gas-water mixing cavity are arranged on, are provided with the water inlet of input waste water
With the air inlet of input gas, the water distributing tray of mixing wastewater with air intracavitary, and blow-down pipe are arranged on；
Core processing portion, it is arranged on above mixing wastewater with air portion, including retort, the water distributing tray of mixing wastewater with air intracavitary are passed into
In retort, the bottom electrode of lower section in retort is arranged on, the Top electrode of top in retort is arranged on, is arranged in retort
And probe tube in communication, the stirrer paddle being arranged in retort, the conducting sphere being covered with retort；
Discharge portion, it is arranged on above core processing portion, including drain chamber, the product after the interior processing of retort enter draining
Intracavitary, the water leg of drain chamber periphery is arranged on, drainpipe is provided with water leg, blast pipe is provided with above drain chamber.
Preferably, the blade is stratified and set on center-pole, is uniformly laid in retort, and center-pole stands on retort
Center, to processing unit top extension connection stirring motor.
Preferably, in addition to automatic control system, including data acquisition portion and control unit, for make processing unit carry out from
Dynamicization operation, analysis and automatic adjusument；The automatic control system is connected to internet to realize remote access, control and diagnosis
Analysis.
Preferably, the drain chamber side wall is provided with outlet pipe, and the water in drain chamber is drained into water leg.
Preferably, the drain chamber sidewall edge sets overflow plate, and the water in drain chamber is drained into by overflow plate to catchment
In groove.
Preferably, the gas-water mixing cavity accounts for the 1/5~1/4 of processing unit.
Preferably, the gas-water mixing cavity is cylindrical or square.
Preferably, it is additionally provided with water quality meter in the core processing portion and discharge portion.
The utility model has the advantages that：
The processing unit of high concentration hard-degraded organic waste water provided by the utility model, the defects of improving correlation technique,
Perfect main processing parameter, having captured high concentration hard-degraded organic waste water can not be by low floor space, low input, low operation
The problem of processing up to standard is carried out with the mode of maintenance cost.Processing method of the present invention is applied widely, especially difficult to high concentration to drop
Solution organic wastewater has the production of the industry such as good disposal ability, coking chemical waste water, bio-pharmaceuticals, printing and dyeing, chemical industry, food and drink and landfill
Raw high-concentration waste water has good applicability.Processing unit of the present invention can realize modularized design, and floor space is small, once
Property investment, it is convenient for installation and maintenance.Handling process is short, simple to operate, avoids the multiple faults problem occurred by long flow.Solve existing
The high O＆M cost issues of highly energy-consuming of method of wastewater treatment, processing method process energy resource consumption of the present invention is small, and medicine addition is few
Even without.Coordinate air lift motion to handle waste water by mechanical agitation, be mixing fortune of the conducting sphere in retort
It is dynamic that sufficient energy is provided, ensure that transverse movement has vertical movement concurrently, increase 20-35% contact area for conducting sphere, shorten
Hydraulic detention time.
Processing unit of the present invention, due to the method for operation of its short flow path and high efficiency, can save conventional processes investment and
The 50-70% of operating cost；Flexible operation, it can be run by the way of continuous or pulse, can also be as needed with a two level
Series system is run, and treatment effect is good.
Using processing unit of the present invention, hardly possible drop of the COD concentration in 2000~100000mg/L even more high concentration can be handled
Solve waste water.Treatment effeciency be 95%~98% and more than；High concentration hard-degraded organic waste water can be discharged into municipal drainage after processing
Pipe network, or it is directly discharged into water body after further handling.
Brief description of the drawings
Fig. 1 is the structural representation of the processing unit of the utility model embodiment 1；
Fig. 2 is the structural representation of the processing unit of the utility model embodiment 2.
In figure：1- mixing wastewater with air portion；101- gas-water mixing cavities；102- water inlets；103- air inlets；104
Water distributing tray；105- blow-down pipes；2- core processings portion；201- retort；202- bottom electrodes；203- Top electrodes；204-
Probe tube；205- stirrer paddles；206- center-poles；207- conducting spheres；3- discharge portions；301- drain chambers；302- water legs；303-
Outlet pipe；304- overflow plates；305- blast pipes；306- drainpipes；4- stirring motors；5- tank skins；6- power supplys.
Embodiment
The technical solution of the utility model is further elaborated with reference to embodiment and accompanying drawing.
Embodiment 1
Referring to shown in Fig. 1, the present embodiment provides a kind of processing unit of high concentration hard-degraded organic waste water, including：Air water
Mixing unit 1, core processing portion 2 and discharge portion 3, wherein, mixing wastewater with air portion 1 is arranged on the bottom of processing unit, including air water mixes
Chamber 101 is closed, the water inlet 102 of input waste water and the air inlet 103 of input gas is provided with, is arranged in gas-water mixing cavity 101
Water distributing tray 104, and blow-down pipe 105；Core processing portion 2 is arranged on the top of mixing wastewater with air portion 1, including retort 201, air water
Water distributing tray 104 in hybrid chamber 101 is passed into retort 201, is arranged on the bottom electrode 202 of lower section in retort 201, is set
The Top electrode 203 of top, is arranged on retort 201 and probe tube 204 in communication, is arranged on reaction in retort 201
Stirrer paddle 205 in tank 201, the conducting sphere 207 being covered with retort 201；Discharge portion 3, it is arranged in core processing portion 2
Side, including drain chamber 301, the product after the interior processing of retort 201 are entered in drain chamber 301, are arranged on the periphery of drain chamber 301
Water leg 302, be provided with drainpipe 306 on water leg 302, for the liquid in water leg 302 to be discharged, drain chamber 301
Top is additionally provided with blast pipe 305, and the gas in product after wastewater treatment is discharged.
Pending high concentration hard-degraded organic waste water is pumped into the gas-water mixing cavity 101 of processing unit by intake pump,
Pressure-air or other gases are passed into gas-water mixing cavity 101 by high pressure positive blower or air blower, waste water and gases at high pressure one
It is same to enter in the water distributing tray 104 in gas-water mixing cavity 101, preferably annular water distributing tray.Mixing wastewater with air liquid is equal by water distributing tray 104
Even water distribution and on flow into the retort 201 in core processing portion 2, to the Top electrode 203 that sets in core processing portion 2 and under
Electrode 202 pressurizes, and by the pressurization 5-25V of power supply 6, and opens stirring, caused micro- between conducting sphere 207 by electrode voltage
Voltage, ozone and ultraviolet etc., waste water moment is decomposed into degradable organic acid, H2O, CO2 and N2 of small molecule etc. to meet
Municipal wastewater treatment plant enters water quality standard, and realizes sterilizing rate more than 99.999%.Waste water rises to discharge of wastewater after processing
Portion 3, liquid are discharged to tank or plant area's delivery port by the drainpipe 306 on water leg 302, and gas passes through the row of blast pipe 305
Go out.
The processing unit of the present embodiment, using modularized design, the processing unit of three-dimensional following water inlet upper water-out is complete
Into wastewater treatment, floor space is small, and one-time investment is low, convenient for installation and maintenance.Handling process is short, simple to operate, avoids because of length
The multiple faults problem that flow occurs.Due to the method for operation of its short flow path and high efficiency, conventional processes investment and fortune can be saved
The 50-70% of row expense；Flexible operation, it can be run by the way of continuous or pulse, can also be as needed with a two level string
Connection mode is run, and treatment effect is good.
In the present embodiment, the effect that gas distribution mixes water is improved by water distributing tray 104, and reduce to waste water and retort tank skin
Impact.
Optionally, the stirrer paddle 205 may be configured as several, be set according to the size of retort 201, to meet to stir
Effect.The blade 205 is stratified and set on center-pole 206, is uniformly laid in retort 201, and center-pole 206 stands on reaction
The center of tank 201, to processing unit top extension connection stirring motor 4.The blade 205 can select 3 leaf formula propeller blades or
Vertical blade etc., main purpose is conducting sphere 207 is had good motion state, prevents conducting sphere 207 from gathering, to expand contact
Area.Churned mechanically power can provide through but not limited to DC brushless motor, variable-frequency motor etc..Motor speed need to need
It is adjustable in the range of wanting, 10-300rpm is arranged in the present embodiment.
Further, the present embodiment also includes automatic control system, including data acquisition portion and control unit, for filling processing
Put and carry out automatic operating, analysis and automatic adjusument；The automatic control system is connected to internet to realize remote access, control
System and diagnostic analysis.So as to meet the automatic operating of wastewater treatment equipment and analysis, can be provided according to on-line monitoring instrument
Data carry out automatic adjusument to relevant parameter.
In the present embodiment, the side wall of drain chamber 301 is provided with outlet pipe 303, by the liquid in drain chamber 301 from draining
It is drained into chamber 301 in water leg 302.
In the present embodiment, the gas-water mixing cavity accounts for the 1/5 of processing unit, and its design is not limited to cylindrical or square.Institute
Stating in core processing portion 2 and discharge portion 3 can also be according to being actually needed setting water quality meter, including to indexs such as pH value and electrical conductivity
Detection.
Embodiment 2
Referring to shown in Fig. 2, the present embodiment provides a kind of processing unit of high concentration hard-degraded organic waste water, wherein, it is described
The sidewall edge of drain chamber 301 sets overflow plate 304, and the water in drain chamber 301 is drained into water leg 302 by overflow plate 304.
Other are same as Example 1.
The processing procedure that the utility model processing is put up a front to high concentration hard-degraded organic waste water, comprises the following steps：
(1) waste water and gases at high pressure are transported to mixing wastewater with air intracavitary, pass through water distributing tray cloth water distribution uniformity and upper transport
To retort；
(2) waste water carries out degradation treatment in retort, under electrode stirred under pressure, is produced between the conducting sphere in retort
Waste water is decomposed into the degradable organic acid of small molecule, water, carbon dioxide and nitrogen etc. by raw micro voltage, ozone and ultraviolet；
(3) waste water products after being handled in retort rise into discharge chamber, and designated area is discharged to through water leg.
Wherein, because pending waste water quality property is complicated, it is being conveyed into gas-water mixing cavity 101 first through necessary acid
Alkali adjusts or other regulation measures, is input in gas-water mixing cavity 101 is handled again afterwards.
Processing procedure energy resource consumption is small, medicine addition it is few even without.Air lift motion pair is coordinated by mechanical agitation
Waste water is handled, and the hybrid motion for being conducting sphere in retort provides sufficient energy, ensures that transverse movement has concurrently vertically
Motion, increase 20-35% contact area for conducting sphere, shorten hydraulic detention time.
The present embodiment can handle used water difficult to degradate of the COD concentration in 2000~100000mg/L even more high concentration.Processing
Efficiency be 95%~98% and more than；High concentration hard-degraded organic waste water can be discharged into municipal drainage pipe network, or enter one after processing
Water body is directly discharged into after step processing.
The sequencing of above example only for ease of describing, does not represent the quality of embodiment.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (8)
- A kind of 1. processing unit of high concentration hard-degraded organic waste water, it is characterised in that including：Mixing wastewater with air portion, the bottom of processing unit, including gas-water mixing cavity are arranged on, are provided with the input water inlet of waste water and defeated Enter the air inlet of gas, be arranged on the water distributing tray of mixing wastewater with air intracavitary, and blow-down pipe；Core processing portion, it is arranged on above mixing wastewater with air portion, including retort, the water distributing tray of mixing wastewater with air intracavitary are passed into reaction In tank, be arranged on the bottom electrode of lower section in retort, be arranged on the Top electrode of top in retort, be arranged in retort and with Connection probe tube, the stirrer paddle being arranged in retort, the conducting sphere being covered with retort；Discharge portion, it is arranged on above core processing portion, including drain chamber, the product after the interior processing of retort enter drain chamber It is interior, the water leg of drain chamber periphery is arranged on, drainpipe is provided with water leg, blast pipe is provided with above drain chamber.
- 2. the processing unit of high concentration hard-degraded organic waste water according to claim 1, it is characterised in that the blade point On the centrally disposed bar of layer, uniformly it is laid in retort, center-pole stands on retort center, connects to the extension of processing unit top Connect stirring motor.
- 3. the processing unit of high concentration hard-degraded organic waste water according to claim 1, it is characterised in that also include automatic Control system, including data acquisition portion and control unit, for making processing unit carry out automatic operating, analysis and adaptive tune Section；The automatic control system is connected to internet to realize remote access, control and diagnostic analysis.
- 4. the processing unit of high concentration hard-degraded organic waste water according to claim 1, it is characterised in that the drain chamber Side wall is provided with outlet pipe, and the water in drain chamber is drained into water leg.
- 5. the processing unit of high concentration hard-degraded organic waste water according to claim 1, it is characterised in that the drain chamber Sidewall edge sets overflow plate, and the water in drain chamber is drained into water leg by overflow plate.
- 6. the processing unit of high concentration hard-degraded organic waste water according to claim 1, it is characterised in that the air water mixes Close chamber and account for the 1/5~1/4 of processing unit.
- 7. the processing unit of high concentration hard-degraded organic waste water according to claim 1, it is characterised in that the air water mixes It is cylindrical or square to close chamber.
- 8. the processing unit of high concentration hard-degraded organic waste water according to claim 1, it is characterised in that at the core Water quality meter is additionally provided with reason portion and discharge portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720397123.2U CN206692401U (en) | 2017-04-17 | 2017-04-17 | The processing unit of high concentration hard-degraded organic waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720397123.2U CN206692401U (en) | 2017-04-17 | 2017-04-17 | The processing unit of high concentration hard-degraded organic waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206692401U true CN206692401U (en) | 2017-12-01 |
Family
ID=60444695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720397123.2U Expired - Fee Related CN206692401U (en) | 2017-04-17 | 2017-04-17 | The processing unit of high concentration hard-degraded organic waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206692401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106865738A (en) * | 2017-04-17 | 2017-06-20 | 博安信和环境科技(北京)有限公司 | The processing unit and method of high concentration hard-degraded organic waste water |
| CN113149154A (en) * | 2021-05-13 | 2021-07-23 | 重庆大学 | Method for oxidizing pollutants in water by coupling electricity/ozone/permanganate |
-
2017
- 2017-04-17 CN CN201720397123.2U patent/CN206692401U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106865738A (en) * | 2017-04-17 | 2017-06-20 | 博安信和环境科技(北京)有限公司 | The processing unit and method of high concentration hard-degraded organic waste water |
| CN113149154A (en) * | 2021-05-13 | 2021-07-23 | 重庆大学 | Method for oxidizing pollutants in water by coupling electricity/ozone/permanganate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7641798B2 (en) | Waste water treatment method and waste water treatment apparatus | |
| CN101070216A (en) | Integrated ozone and aeration biological filtering pool water treatment apparatus and method | |
| CN103613254B (en) | The deep treatment method of fine chemistry industry garden sewage work organic wastewater with difficult degradation thereby | |
| CN106830467B (en) | Fenton method sewage treatment integrated device based on iron mud recycling and method thereof | |
| CN206692401U (en) | The processing unit of high concentration hard-degraded organic waste water | |
| CN204644056U (en) | A kind of organic sewage treatment device | |
| CN105884011A (en) | Membrane electric biological treatment device and method for high-concentration organic wastewater hard to degrade | |
| CN206109022U (en) | Cephalo pharmacy wastewater systems is handled in catalysis ozonization circulation | |
| CN106865738A (en) | The processing unit and method of high concentration hard-degraded organic waste water | |
| CN206457301U (en) | A kind of decoloration device of livestock breeding wastewater | |
| CN105936571A (en) | Method for processing polyurethane (PU) synthetic leather wastewater | |
| CN101885561A (en) | Recombinant decorative material production waste water treatment process | |
| CN214031980U (en) | Advanced oxidation water treatment integrated device with improved structure | |
| CN207405000U (en) | A kind of compound advanced oxidation technology handles the device of high COD waste liquids | |
| CN204079675U (en) | The device of circular treatment oily(waste)water | |
| CN105366836A (en) | Process and device for circulating multi-dimensional catalyzing advanced oxidation treatment of oily wastewater | |
| CN207581590U (en) | A kind of processing unit of pharmaceutical intermediate wastewater | |
| KR101316051B1 (en) | Apparatus for treating sludge by biological method | |
| CN214004361U (en) | Domestic sewage treatment device | |
| CN204490680U (en) | A kind of pharmacy wastewater treatment device | |
| CN209906422U (en) | Device for advanced oxidation of degradation-resistant industrial wastewater by ozone/hydrogen peroxide | |
| KR20040031964A (en) | The method and wastewater disposal plant of high concentration using a vacuum pump | |
| CN105948413A (en) | Treatment process for high-concentration liquid crystal wastewater | |
| CN101983936A (en) | High-pressure impulse catalytic ozone strong oxidizing device for sewage treatment | |
| CN217418299U (en) | Intermittent type formula effluent treatment plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171201 Termination date: 20180417 |