CN109052571A - A kind of processing equipment for emulsifying wastewater - Google Patents

A kind of processing equipment for emulsifying wastewater Download PDF

Info

Publication number
CN109052571A
CN109052571A CN201811066605.5A CN201811066605A CN109052571A CN 109052571 A CN109052571 A CN 109052571A CN 201811066605 A CN201811066605 A CN 201811066605A CN 109052571 A CN109052571 A CN 109052571A
Authority
CN
China
Prior art keywords
nanofiltration
ultrafiltration
inorganic
processing equipment
membrane
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.)
Pending
Application number
CN201811066605.5A
Other languages
Chinese (zh)
Inventor
陆超
刘旭红
唐礼升
黄斌
赵娟
王丹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Membrane Technology Co Ltd
Original Assignee
Shanghai Membrane Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Membrane Technology Co Ltd filed Critical Shanghai Membrane Technology Co Ltd
Priority to CN201811066605.5A priority Critical patent/CN109052571A/en
Publication of CN109052571A publication Critical patent/CN109052571A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D65/00Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02Membrane cleaning or sterilisation ; Membrane regeneration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2321/00Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/16Use of chemical agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • C02F2201/007Modular design

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention discloses a kind of processing equipments for emulsifying wastewater, including pre-filtering machine, ultrafiltration circulating slot, ultrafiltration rinse bath, ultrafiltration circulating pump, inorganic ultra-filtration membrane module, nanofiltration circulating slot, nanofiltration rinse bath, nanofiltration circulating pump, Inorganic Nanofiltration Membranes component.The oil-containing concentrated water volume that present invention processing generates reduces 90-95% before relatively handling, and oil-containing concentrated water calorific value height directly can burn or recycle waste oil, and processing method is simple and reliable.

Description

A kind of processing equipment for emulsifying wastewater
Technical field
The present invention relates to a kind of processing equipments for emulsifying wastewater, are suitable for the row such as machining, automobile, steel The environmental protection treatment for the emulsifying wastewater that industry generates.
Background technique
Existing common oil-containing oil emulsion waste water treatment process: demulsifier is added into emulsifying wastewater, utilizes demulsification The chemical action of agent separate oil with water, forms oil, water two-phase, then utilize chemical agent with Air bearing effect, oil is removed from waste water.Water reuse biochemical method processing after oil removing, reduces COD value, so that it is produced water and reaches ring Protect discharge index.But there is many defects for this treatment process, such as:
1, process flow is long, and required equipment is more, takes up a large area.
2, manual operation is depended on, cannot achieve automation.
3, biochemical method long processing period, it usually needs 7-30 days, inefficiency.
4, it needs repeatedly largely to use chemical agent, generates larger amount of solid waste, it is difficult to handle.
5, low to waste water quality fluctuation adaptability, impact resistance is poor, and producing water water quality is unstable
Summary of the invention
The present invention uses Inorganic Ultrafiltration Membrane, Inorganic Nanofiltration Membranes for the two of core primarily to solution above-mentioned technical problem Grade membrane separation process, provides a kind of processing equipment for emulsifying wastewater.
To achieve the above object, the present invention adopts the following technical scheme that:
A kind of processing equipment for emulsifying wastewater, including pre-filtering machine, ultrafiltration circulating slot, ultrafiltration rinse bath, Ultrafiltration circulating pump, inorganic ultra-filtration membrane module, nanofiltration circulating slot, nanofiltration rinse bath, nanofiltration circulating pump, Inorganic Nanofiltration Membranes component.Institute It states the setting of pre-filtering machine and recycles front of the slot in the ultrafiltration, the outlet of the pre-filtering machine connects entering for the ultrafiltration circulating slot Mouthful, the side of the ultrafiltration circulating slot is equipped with ultrafiltration rinse bath, and the outlet of the ultrafiltration circulating slot is connected by ultrafiltration circulating pump In the entrance of the inorganic ultra-filtration membrane module, the purified liquor outlet of the inorganic ultra-filtration membrane module is connected to the nanofiltration circulating slot The side side of entrance, the nanofiltration circulating slot is equipped with nanofiltration rinse bath, and the outlet of the nanofiltration circulating slot is recycled by the nanofiltration Pump is connected to the entrance of Inorganic Nanofiltration Membranes component, and the Inorganic Nanofiltration Membranes component purified liquor outlet is to produce water outlet.
Further, ultrafiltration circulating slot heater is provided in the ultrafiltration circulating slot.
Further, ultrafiltration rinse bath heater is provided in the ultrafiltration rinse bath.
Further, nanofiltration circulating slot heater is provided in the nanofiltration circulating slot.
Further, nanofiltration rinse bath heater is provided in the nanofiltration rinse bath.
Further, ultrafiltration membrane used in the inorganic ultra-filtration membrane module is inorganic, and material is silicates, gold Belong to oxide-based, silicon carbide, graphene or metal, the separation accuracy 10nm-500nm of the ultrafiltration membrane, corresponding cutting molecule Amount is 20000-1000000 dalton, and the ultrafiltration membrane is tubular type or board-like, and the ultrafiltration membrane operating pressure is 0.01- 1.0MPa。
Further, nanofiltration membrane used in the Inorganic Nanofiltration Membranes component is inorganic, and material is silicates, gold Belong to oxide-based, silicon carbide, graphene or metal, the separation accuracy 0.5-10nm of the nanofiltration membrane, corresponding molecular weight cut off For 200-20000 dalton, the nanofiltration membrane is tubular type or board-like, and the nanofiltration membrane operating pressure is 0.1-1.5MPa.
The invention has the following advantages:
1, process is simple, and two-stage UF membrane can make production water COD value reach environmental emission standard.
2, easy to operate, it can be achieved that Automatic Control, save human cost.
3, occupied area is small, integrated design, the 15-20% that place only needs biochemical method to handle.
4, producing water water quality is stablized, strong shock resistance, and waste water raw water quality ability to bear is strong.
5, short processing time, high-efficient, processing capacity adjustment is flexible.
6,90-95% is reduced before the oil-containing concentrated water volume that processing generates relatively is handled, oil-containing concentrated water calorific value height can be burned directly Or recycling waste oil, processing method are simple and reliable.
7, pure physical filtering separation, without using chemical agent, no solid waste sludge is generated.
8, membrane material is inorganic, cleaning and regeneration, service life can be for up to 8-10 repeatedly.
Detailed description of the invention
Fig. 1 is a kind of process principle figure of the processing equipment for emulsifying wastewater of the present invention.
Fig. 2 is a kind of structural schematic diagram of the processing equipment for emulsifying wastewater of the present invention.
Specific embodiment
In the following, in conjunction with accompanying drawings and embodiments, the present invention is described in detail.
As shown in Figs. 1-2, a kind of processing equipment for emulsifying wastewater, at the emulsifying wastewater used Science and engineering skill are as follows:
Emulsifying wastewater → pre-filtering → Inorganic Ultrafiltration Membrane filtering → Inorganic Nanofiltration Membranes filter → produces water.
To realize above-mentioned technique, emulsifying wastewater processing equipment includes pretreatment unit, inorganic ultra-filtration film process list Member and Inorganic Nanofiltration Membranes processing unit.
For pretreatment unit, major function is to carry out pre-filtering to emulsifying wastewater, is removed therein The insoluble impurities such as fraction solids particle, suspended oil, to play the role of improving treatment effeciency, protection Inorganic Ultrafiltration Membrane.
For Inorganic Ultrafiltration Membrane processing unit, major function is the tiny aperture using ultrafiltration membrane 10-500nm, Oil emulsion is intercepted, and hydrone and dissolved organic matter is allowed to penetrate, ultrafiltration is formed and produces water, to play the oil in removal waste water Effect, oily removal rate > 99%.
For Inorganic Nanofiltration Membranes processing unit, major function is the micro-aperture using nanofiltration membrane 0.5-10nm, Ultrafiltration is produced the larger molecular organics in water to intercept, and hydrone and small organic molecule is allowed to penetrate, to play removal COD's Effect.
After the group technology of above two-stage film filtering, oil and larger molecular organics in emulsifying wastewater are gone It removes, produces oil and COD value in water and be reduced within environmental emission standard, oil-containing concentrated water volume that treated reduces 90- before relatively handling 95%, oil-containing concentrated water calorific value height directly can burn or recycle waste oil, and processing method is simple and reliable, handle for emulsifying wastewater Revolutionary advancement.
A kind of each component of processing equipment for emulsifying wastewater of the present invention or the correlation explanation of device: even It is connected to outlet connection 3 entrance of ultrafiltration circulating slot of the pre-filtering machine 1 of waste water inlet, the outlet of ultrafiltration circulating slot 3 is recycled by ultrafiltration Pump 6 is connected to 7 entrance of inorganic ultra-filtration membrane module, and the purified liquor outlet of inorganic ultra-filtration membrane module 7 is connected to 9 entrance of nanofiltration circulating slot, The outlet of nanofiltration circulating slot 9 is connected to the entrance of Inorganic Nanofiltration Membranes component 13, Inorganic Nanofiltration Membranes component 13 by nanofiltration circulating pump 12 Purified liquor outlet is to produce water outlet.
Ultrafiltration membrane used in the inorganic ultra-filtration membrane module (7) is inorganic, and material is silicates, metal oxidation Species, silicon carbide, graphene or metal, the separation accuracy 10nm-500nm of the ultrafiltration membrane, corresponding molecular weight cut off are 20000-1000000 dalton, the ultrafiltration membrane are tubular type or board-like, and the ultrafiltration membrane operating pressure is 0.01-1.0MPa.
Nanofiltration membrane used in the Inorganic Nanofiltration Membranes component (13) is inorganic, and material is silicates, metal oxygen Compound class, silicon carbide, graphene or metal, the separation accuracy 0.5-10nm of the nanofiltration membrane, corresponding molecular weight cut off are 200-20000 dalton, the nanofiltration membrane are tubular type or board-like, and the nanofiltration membrane operating pressure is 0.1-1.5MPa.
Ultrafiltration circulating slot 3 is connected to discard solution discharge port by control valve, by oil-containing dope device for transferring.
Nanofiltration circulating slot 9 is connected to discard solution discharge port by control valve, by concentrating spent liquor device for transferring or is discharged into ultrafiltration circulation Slot 3 continues secondary treatment.
To complete the cleaning and regeneration operation to Inorganic Ultrafiltration Membrane and Inorganic Nanofiltration Membranes, the side of the ultrafiltration circulating slot 3 is set There is ultrafiltration rinse bath 5, is equipped with nanofiltration rinse bath 11 by the side of the nanofiltration circulating slot 9, and in order to guarantee cleaning effect, it is described It is provided with ultrafiltration circulating slot heater 2 in ultrafiltration circulating slot 3, ultrafiltration rinse bath heater is provided in the ultrafiltration rinse bath 5 4, nanofiltration circulating slot heater 8 is provided in the nanofiltration circulating slot 9, is provided with nanofiltration rinse bath in the nanofiltration rinse bath 11 Heater 10.
Specifically, making to clean in ultrafiltration rinse bath 5 and nanofiltration rinse bath 11 by control valve when cleaning and regeneration operation Agent enters inorganic ultra-filtration membrane module 7 and Inorganic Nanofiltration Membranes component 13 by ultrafiltration circulating pump 6 and nanofiltration circulating pump 12 respectively, right Inorganic Ultrafiltration Membrane and Inorganic Nanofiltration Membranes carry out cleaning and regeneration.Inorganic Ultrafiltration Membrane and Inorganic Nanofiltration Membranes can clean simultaneously, can also It is respectively washed.
A kind of wastewater treatment process of the processing equipment for emulsifying wastewater of the lower present invention is briefly described below:
Waste water is after 1 pre-filtering of prefilter, into ultrafiltration circulating slot 3, is recycled in ultrafiltration circulating slot 3 by ultrafiltration Slot heater 2 is heated, and then passes through the effect of ultrafiltration circulating pump 6, into inorganic ultra-filtration membrane module 7.Waste water is inorganic super Water-oil separating is carried out in filter membrane component 7, Inorganic Ultrafiltration Membrane trapped fluid flows back to ultrafiltration circulating slot 3, and permeate enters nanofiltration circulating slot 9.Waste water carries out concurrent heating by nanofiltration circulating slot heater 8 in nanofiltration circulating slot 9, then passes through the effect of nanofiltration circulating pump 12, Into Inorganic Nanofiltration Membranes component 13.Waste water carries out organic matter separation, Inorganic Nanofiltration Membranes trapped fluid in Inorganic Nanofiltration Membranes component 13 Nanofiltration circulating slot 3 is flowed back to, permeate is production water up to standard, device for transferring.
Control system of the invention can realize that not in this to go forth using the prior art.
Finally, it should be noted that above embodiments are only to illustrate the present invention and not limit technology described in the invention Scheme;Therefore, although this specification is referring to above-mentioned each embodiment, the present invention has been described in detail, this Field it is to be appreciated by one skilled in the art that still can modify to the present invention or equivalent replacement;And all do not depart from this The technical solution and its improvement of the spirit and scope of invention, should all cover within the scope of the claims of the present invention.

Claims (10)

1. a kind of processing equipment for emulsifying wastewater, it is characterised in that: including pre-filtering machine (1), ultrafiltration circulating slot (3), ultrafiltration rinse bath (5), ultrafiltration circulating pump (6), inorganic ultra-filtration membrane module (7), nanofiltration circulating slot (9), nanofiltration rinse bath (11), nanofiltration circulating pump (12), Inorganic Nanofiltration Membranes component (13);
The pre-filtering machine (1) setting is in ultrafiltration circulating slot (3) front end, described in the outlet connection of the pre-filtering machine (1) The side of the entrance of ultrafiltration circulating slot (3), the ultrafiltration circulating slot (3) is equipped with ultrafiltration rinse bath (5), the ultrafiltration circulating slot (3) outlet is connected to the entrance of the inorganic ultra-filtration membrane module (7), the Inorganic Ultrafiltration Membrane group by ultrafiltration circulating pump (6) The purified liquor outlet of part (7) is connected to the entrance of the nanofiltration circulating slot (9), is equipped with nanofiltration by the side of the nanofiltration circulating slot (9) The outlet of rinse bath (11), the nanofiltration circulating slot (9) is connected to Inorganic Nanofiltration Membranes component by the nanofiltration circulating pump (12) (13) entrance, Inorganic Nanofiltration Membranes component (13) purified liquor outlet are to produce water outlet.
2. the processing equipment according to claim 1 for emulsifying wastewater, it is characterised in that: the ultrafiltration circulation Ultrafiltration circulating slot heater (2) is provided in slot (3).
3. the processing equipment according to claim 1 for emulsifying wastewater, it is characterised in that: the ultrafiltration cleaning Ultrafiltration rinse bath heater (4) is provided in slot (5).
4. the processing equipment according to claim 1 for emulsifying wastewater, it is characterised in that: the nanofiltration circulation Nanofiltration circulating slot heater (8) is provided in slot (9).
5. the processing equipment according to claim 1 for emulsifying wastewater, it is characterised in that: the nanofiltration cleaning Nanofiltration rinse bath heater (10) is provided in slot (11).
6. the processing equipment according to claim 1 for emulsifying wastewater, it is characterised in that: the inorganic ultra-filtration Ultrafiltration membrane used in membrane module (7) be inorganic, material be silicates, metal oxide-type, silicon carbide, graphene or Metal, the separation accuracy 10nm-500nm of the ultrafiltration membrane, corresponding molecular weight cut off are 20000-1000000 dalton, institute Stating ultrafiltration membrane is tubular type or board-like.
7. the processing equipment according to claim 6 for emulsifying wastewater, it is characterised in that: the ultrafiltration membrane behaviour Making pressure is 0.01-1.0MPa.
8. the processing equipment according to claim 1 for emulsifying wastewater, it is characterised in that: the inorganic nanofiltration Nanofiltration membrane used in membrane module (13) is inorganic, and material is silicates, metal oxide-type, silicon carbide, graphene Or metal, the separation accuracy 0.5-10nm of the nanofiltration membrane, corresponding molecular weight cut off are 200-20000 dalton.
9. the processing equipment according to claim 8 for emulsifying wastewater, it is characterised in that: the nanofiltration membrane is Tubular type is board-like.
10. the processing equipment according to claim 8 for emulsifying wastewater, it is characterised in that: the nanofiltration membrane Operating pressure is 0.1-1.5MPa.
CN201811066605.5A 2018-09-13 2018-09-13 A kind of processing equipment for emulsifying wastewater Pending CN109052571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811066605.5A CN109052571A (en) 2018-09-13 2018-09-13 A kind of processing equipment for emulsifying wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811066605.5A CN109052571A (en) 2018-09-13 2018-09-13 A kind of processing equipment for emulsifying wastewater

Publications (1)

Publication Number Publication Date
CN109052571A true CN109052571A (en) 2018-12-21

Family

ID=64760472

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811066605.5A Pending CN109052571A (en) 2018-09-13 2018-09-13 A kind of processing equipment for emulsifying wastewater

Country Status (1)

Country Link
CN (1) CN109052571A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10102700A1 (en) * 2001-01-22 2002-08-01 Eberhard Runge Oil separation from effluent waters takes place in two stages, first separating it mechanically, then by membrane filtration
CN101597108A (en) * 2009-06-19 2009-12-09 中国海洋大学 A kind of method that reduces oil field oil extraction transportation system and stratum fouling
CN202070289U (en) * 2011-04-26 2011-12-14 大连艺高水处理技术有限公司 Inorganic ultra-filtration oil and water separation equipment
CN105293773A (en) * 2015-11-17 2016-02-03 苏州市新能膜材料科技有限公司 System for processing oil-bearing emulsion wastewater based on gradient membrane separation combination method and method thereof
CN106915833A (en) * 2015-12-25 2017-07-04 蓝星环境工程有限公司 A kind of emulsifying liquid waste water embrane method reuse technology
CN209759078U (en) * 2018-09-13 2019-12-10 上海科琅膜科技有限公司 A treatment facility for oiliness emulsion waste water

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10102700A1 (en) * 2001-01-22 2002-08-01 Eberhard Runge Oil separation from effluent waters takes place in two stages, first separating it mechanically, then by membrane filtration
CN101597108A (en) * 2009-06-19 2009-12-09 中国海洋大学 A kind of method that reduces oil field oil extraction transportation system and stratum fouling
CN202070289U (en) * 2011-04-26 2011-12-14 大连艺高水处理技术有限公司 Inorganic ultra-filtration oil and water separation equipment
CN105293773A (en) * 2015-11-17 2016-02-03 苏州市新能膜材料科技有限公司 System for processing oil-bearing emulsion wastewater based on gradient membrane separation combination method and method thereof
CN106915833A (en) * 2015-12-25 2017-07-04 蓝星环境工程有限公司 A kind of emulsifying liquid waste water embrane method reuse technology
CN209759078U (en) * 2018-09-13 2019-12-10 上海科琅膜科技有限公司 A treatment facility for oiliness emulsion waste water

Similar Documents

Publication Publication Date Title
JP5033130B2 (en) Water purification apparatus and method of implementation
CN102887596B (en) Method and device for treating oil-containing emulsified wastewater or waste emulsion
CN104609605B (en) Device and method for realizing printing and dyeing dyed wastewater reuse and dye recovery
CN105060582A (en) Oil production wastewater processing and recycling method
CN107151076A (en) A kind of processing of high-concentration waste emulsion, recovery process
JP2007301544A (en) Membrane type oil-water separator, membrane washing method, washing system using membrane type oil-water separator, and oil-water separating system of water-soluble coolant liquid
CN102311180B (en) Method for removing and recovering copper and zinc in wastewater of copper-zinc catalysts
CN105906153A (en) Waste cutting fluid treatment process
CN105712302A (en) System and method for recycling sulfuric acid of waste lead storage batteries
CN107500450A (en) Desulfurization wastewater zero-emission processing method
KR101496100B1 (en) Membrane filtration device with high recovery and cleaning method thereof
CN104261597A (en) Pretreatment method for removing oil from high-concentration sewage in coal chemical industry
CN108083525A (en) A kind of method with ceramic membrane filter recycling cutting fluid
CN209759078U (en) A treatment facility for oiliness emulsion waste water
CN109052571A (en) A kind of processing equipment for emulsifying wastewater
EP3181525A1 (en) Process for treating produced water from an oil & gas field
CN205892904U (en) A integration equipment for automaticallying process sewage
CN204550172U (en) A kind of pH regulator that utilizes improves the system reclaiming waste emulsion ultrafiltration efficiency
CN201942583U (en) Ceramic membrane filter device with oil partition tank
CN106673246A (en) Waste liquid treatment and direct discharging system
JP2000202247A (en) Treatment of emulsion type oil-containing waste water and treating device
CN211004887U (en) Waste incineration power plant waste water processing system
CN209554904U (en) A kind of release agent recycling device
KR20170114475A (en) Recycling Method of water-Based Synthetic Metal working Fluids
CN206437963U (en) A kind of liquid waste processing direct discharge system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination