CN108640425A - Composite flow filter tank and combination thereof - Google Patents
Composite flow filter tank and combination thereof Download PDFInfo
- Publication number
- CN108640425A CN108640425A CN201810496347.8A CN201810496347A CN108640425A CN 108640425 A CN108640425 A CN 108640425A CN 201810496347 A CN201810496347 A CN 201810496347A CN 108640425 A CN108640425 A CN 108640425A
- Authority
- CN
- China
- Prior art keywords
- filter tank
- combined
- water
- flow filter
- postposition
- 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
Links
- 239000002131 composite material Substances 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 238000011001 backwashing Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000006004 Quartz sand Substances 0.000 claims description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 238000005406 washing Methods 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 5
- 238000009287 sand filtration Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Inorganic materials [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 description 3
- SXDBWCPKPHAZSM-UHFFFAOYSA-N bromic acid Chemical compound OBr(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-N 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009298 carbon filtering Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Water Treatment By Sorption (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a composite flow filter tank and a combination thereof, which is characterized in that: the device comprises a substrate, a water inlet channel, a front filter, a first backwashing system for washing the front filter, a rear filter connected with the front filter in series, a second backwashing system for washing the rear filter and a clear water outlet area connected with the rear filter, wherein the front filter comprises a first air water distribution area, a front filter material layer and a water outlet area which are connected with the water inlet channel, the rear filter comprises a water inlet, a rear filter layer and a second air water distribution area which are connected with the first water outlet area, one end of the first backwashing system is connected with the first air water distribution area, one end of the second backwashing system is connected with the second air water distribution area, and the front filter and the rear filter are integrated in the substrate.
Description
Technical field
The present invention relates to sewage treatment fields more particularly to combined-flow filter tank and combinations thereof.
Background technology
To improve drinking water quality, to remove Organic substance in water pollution, ammonia nitrogen and poisonous and harmful substance drinking as target
For water depth treatment technology using more and more, ozone-BAC process is one of the prevailing technology being most widely used.But
Under certain condition, which has biology leakage, delivery turbidity increases, generates bromate equivalent risk, to avoid above-mentioned risk
Occur, is generally used in combination using biological activated carbon processing and sand filtration two-stage filter tank, to ensure Drinking water quality.But because lack conjunction
The two is merged centralized arrangement by suitable filter tank pond type, the side for still using two kinds of filter tanks independently to arrange in current most of engineerings
Formula, two-stage filter tank is arranged apart to cause to take up a large area, pipeline is more, head loss is big, cost is high and management is inconvenient, a kind of to give birth to
The combined-flow combination filter tank of the processing of object activated carbon and sand filtration centralized arrangement in a lattice filter tank needs innovation and creation.
Invention content
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of simple in structure and at low cost to answer
Collaborate filter tank and combinations thereof.
To achieve the above object, the present invention is using following technical scheme：A kind of combined-flow filter tank, it is characterised in that：Packet
Include matrix, inlet channel, preposition filter tank, the first backwashing system that preposition filter tank is rinsed, with preposition filter tank it is concatenated after
Set the clear water zone in filter tank, the second backwashing system being rinsed to postposition filter tank and connection postposition filter tank, the postposition filter tank
Water inlet, postposition filtering layer, the second air water including connecting the first exhalant region distribute area, and one end of first backwashing system connects
Meet the first air water distribution area, one end of second backwashing system connects the second air water and distributes area, the preposition filter tank and after
Filter tank is set to be integrated in described matrix.
Further, the preposition filter material layer includes the activated carbon filter layer being arranged in order and gravel supporting layer.
Further, the postposition filtering layer includes the quartz sand filter media layer being arranged in order and gravel supporting layer.
Further, the first air water distribution area includes the first air-water distribution tray, the first filter plate and short-handled filter head.
Further, the second air water distribution area includes the second air-water distribution tray, the second filter plate and strainer head, described
Air-water distribution tray connects the backwashing system.
Further, first backwashing system includes backwash air inlet, recoil water pipe, flushing water drainage ditch and company
Connect the clear water water outlet of clear water zone.
Further, the combined-flow filter tank further includes the backwash drain valve for connecting postposition filter tank and flushing water drainage ditch
Door, backwash water discharging valve is closed when backwash, and backwash water discharging valve is opened after backwash to draining flushing water draining
Canal drains.
Further, a kind of combined-flow filter tank combination is provided, the water outlet in the combined-flow filter tank, each clear water zone of connection is included
Manifold and pipe gallery.
Further, each combined-flow filter tank is connected in parallel to each other.
Further, the pipe gallery includes Graceful water piping system, filter back washing pipe-line system, overhauls and lead to
Road.
The combined-flow filter tank of the present invention, by biological activated carbon processing and sand filtration centralized arrangement in same filter tank, using string
It is coupled the combined-flow pattern closed, so that the filter tank pond type is provided simultaneously with the function of conventional treatment and advanced treating, tradition can be solved
Unimodality filter tank be likely to occur biology leakage, delivery turbidity increase, generate bromate equivalent risk, promoted and ensure manufacture
Water quality, the combination filter tank have it is more complete compared to traditional filter tank purification function, save take up an area more, head loss smaller, civil engineering and
Equipment investment more saves, manages the advantages that collection neutralization operation facilitates.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the floor map of combined-flow filter tank combination of the present invention.
Fig. 2 is the structural schematic diagram in combined-flow filter tank of the present invention.
Specific implementation mode
Shown in Fig. 1, present embodiment the technical solution adopted is that：The present invention is one using following technical scheme
Kind combined-flow filter tank 100, it is characterised in that：Including matrix 10, inlet channel 1, preposition filter tank 2, preposition filter tank 2 cleaned
First backwashing system 4 ', the second backwash cleaned with the concatenated postposition filter tank 3 in preposition filter tank, to postposition filter tank 2 are
The clear water zone 6 in system 4 and connection postposition filter tank, the preposition filter tank 2 include the first air water distribution area 22, preceding of connection inlet channel
Set filter material layer 21 and exhalant region 23, the postposition filter tank 3 include the water inlet 31 of the first exhalant region 23 of connection, postposition filtering layer 32,
Second air water distributes area 33, and one end of first backwashing system 4 ' connects the first air water and distributes area 22, second recoil
The one end for washing system 4 connects the second air water distribution area 33, and the preposition filter tank 2 and postposition filter tank 3 are integrated in described matrix.
The exhalant region 23 is formed by being uniformly distributed in the stainless steel catch basin above filter tank, and the clear water exhalant region is by water
Shut-in well, effluent weir and clear water canal composition (not shown).
Further, the preposition filter material layer 21 includes the activated carbon filter layer being arranged in order and gravel supporting layer.
Further, the postposition filtering layer 32 includes the quartz sand filter media layer being arranged in order and gravel supporting layer.
Further, the first air water distribution area 22 includes the first air-water distribution tray 221, the first filter plate 222 and short handle
Filter 223.
Further, the second air water distribution area 33 includes the second air-water distribution tray 331, the second filter plate 332 and long handle
Filter 333, the air-water distribution tray connect the backwashing system.
Further, first backwashing system 4 includes backwash air inlet 41, recoil water pipe 42, flushing water draining
Canal 42 and the clear water water outlet 44 for connecting clear water zone.The structure of second backwashing system 4 ' is identical as backwashing system 4, backwash
Air inlet and 41 ' and backwash water discharging valve 5 ' it is as shown in Figure 2.
Further, the combined-flow filter tank 100 further includes the recoil for connecting postposition filter tank 3 and flushing water drainage ditch 42
Wash water discharging valve 5, when backwash closes backwash water discharging valve 5, and backwash water discharging valve 5 is opened after backwash to draining
Flushing water drainage ditch drains, and finally enters sewage recovering system.
The present invention provides a kind of combination of combined-flow filter tank, including each clear water zone of at least two combined-flow filter tanks 100, connection 6
Outfall sewer 7 and pipe gallery 8.Select four combined-flow filter tanks 100 in parallel in the present embodiment, combined-flow filter tank combined planar
Shown in layout drawing 1, it is arranged in parallel 1#~4# totally 4 lattice filter tanks (filter tank lattice are several in practice designs according to water situation), per lattice
Filter tank can independent operating, single lattice filter tank backwashed in turn, when backwash per lattice filter tank in preposition activated carbon filtering pool and after
Backwash can be carried out at the same time by setting sand filter, and it is mainly postposition sand filtration to share backwash pump house and air blast computer room, backwashing pump room
Pond provides backwash water (preposition Upward flow active carbon filter tank does not need backwash water), air blast computer room is preposition activated carbon filtration
Pond and postposition sand filter provide backwash gas.
Further, each combined-flow filter tank 100 is connected in parallel to each other, and can carry out unrestricted choice according to water.
Further, the pipe gallery includes Graceful water piping system, filter back washing pipe-line system, overhauls and lead to
Road, for being managed to pipeline, the operations such as maintenance, repair.
The combined-flow filter tank of the present invention, by biological activated carbon processing and sand filtration centralized arrangement in same filter tank, using string
It is coupled the combined-flow pattern closed, so that the filter tank pond type is provided simultaneously with the function of conventional treatment and advanced treating, tradition can be solved
Unimodality filter tank be likely to occur biology leakage, delivery turbidity increase, generate bromate equivalent risk, promoted and ensure manufacture
Water quality, the combination filter tank have it is more complete compared to traditional filter tank purification function, save take up an area more, head loss smaller, civil engineering and
Equipment investment more saves, manages the advantages that collection neutralization operation facilitates.
The above is merely illustrative of the technical solution of the present invention and unrestricted, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (10)
1. combined-flow filter tank, it is characterised in that：Including matrix, inlet channel, preposition filter tank, preposition filter tank is rinsed first
It backwashing system, the second backwashing system being rinsed with the concatenated postposition filter tank in preposition filter tank, to postposition filter tank and connect
The clear water zone in postposition filter tank, the preposition filter tank include the first air water distribution area, preposition filter material layer and the water outlet for connecting inlet channel
Area, the postposition filter tank include water inlet, postposition filtering layer, the second air water the distribution area for connecting the first exhalant region, and described first is anti-
One end of rinse-system connects the first air water and distributes area, and one end of second backwashing system connects the second air water and distributes area,
The preposition filter tank and postposition filter tank are integrated in described matrix.
2. combined-flow filter tank as described in claim 1, it is characterised in that：The preposition filter material layer includes the activity being arranged in order
Charcoal filter material layer and gravel supporting layer.
3. combined-flow filter tank as claimed in claim 2, it is characterised in that：The postposition filtering layer includes the quartz sand being arranged in order
Filter material layer and gravel supporting layer.
4. combined-flow filter tank as described in claim 1, it is characterised in that：The first air water distribution area includes the first air water point
Slot allocation, the first filter plate and short-handled filter head.
5. combined-flow filter tank as claimed in claim 4, it is characterised in that：The second air water distribution area includes the second air water point
Slot allocation, the second filter plate and strainer head, the air-water distribution tray connect the backwashing system.
6. combined-flow filter tank as claimed in claim 5, it is characterised in that：First backwashing system includes backwash air inlet
Mouth, recoil water pipe, flushing water drainage ditch and the clear water water outlet for connecting clear water zone.
7. combined-flow filter tank as claimed in claim 6, it is characterised in that：The combined-flow filter tank further includes connection postposition filter tank
With the backwash water discharging valve of flushing water drainage ditch, backwash water discharging valve is closed when backwash, is opened after backwash anti-
Flush discharge valve is drained to draining flushing water drainage ditch.
8. combined-flow filter tank is combined, which is characterized in that including at least two as described in claim 1 to 7 any one of them
The outfall sewer and pipe gallery in combined-flow filter tank, each clear water zone of connection.
9. combined-flow filter tank combination as claimed in claim 8, it is characterised in that：Each combined-flow filter tank is connected in parallel to each other.
10. combined-flow filter tank combination as claimed in claim 8, it is characterised in that：The pipe gallery includes clear water outlet pipe
Road system, filter back washing pipe-line system, access path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810496347.8A CN108640425A (en) | 2018-05-22 | 2018-05-22 | Composite flow filter tank and combination thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810496347.8A CN108640425A (en) | 2018-05-22 | 2018-05-22 | Composite flow filter tank and combination thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108640425A true CN108640425A (en) | 2018-10-12 |
Family
ID=63757437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810496347.8A Pending CN108640425A (en) | 2018-05-22 | 2018-05-22 | Composite flow filter tank and combination thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108640425A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643269A (en) * | 2008-08-07 | 2010-02-10 | 中冶赛迪工程技术股份有限公司 | Biological aerated filter and process |
| CN101955301A (en) * | 2010-09-20 | 2011-01-26 | 南京林业大学 | Method and equipment for treating micropollution raw water based on biological bamboo charcoal contact oxidation method |
| CN102502952A (en) * | 2011-11-08 | 2012-06-20 | 清华大学 | Drinking water treatment aeration carbon sand filtering tank capable of improving ammonia nitrogen removal capacity |
| CN203392918U (en) * | 2013-08-02 | 2014-01-15 | 大连玉源环境工程有限公司 | Novel biological aerated filter |
| CN104108838A (en) * | 2014-08-06 | 2014-10-22 | 农业部环境保护科研监测所 | Method for removing iron and manganese from rural underground drinking water |
| CN104529077A (en) * | 2014-12-26 | 2015-04-22 | 上海市城市建设设计研究总院 | Water treatment device with combination of sand filtration and ozonation and activated carbon |
| CN205295076U (en) * | 2015-12-11 | 2016-06-08 | 交通运输部科学研究院 | Environmental sewage treatment system device of service area based on bological aerated filter |
| CN205635292U (en) * | 2016-05-28 | 2016-10-12 | 河北安居塑料制品有限公司 | Sewage treatment ware is used at rural family |
| CN206934828U (en) * | 2017-07-06 | 2018-01-30 | 山东师范大学 | One kind backwash filter tank |
| CN208545270U (en) * | 2018-05-22 | 2019-02-26 | 中国市政工程中南设计研究总院有限公司 | Composite flow filter tank and combination thereof |
-
2018
- 2018-05-22 CN CN201810496347.8A patent/CN108640425A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643269A (en) * | 2008-08-07 | 2010-02-10 | 中冶赛迪工程技术股份有限公司 | Biological aerated filter and process |
| CN101955301A (en) * | 2010-09-20 | 2011-01-26 | 南京林业大学 | Method and equipment for treating micropollution raw water based on biological bamboo charcoal contact oxidation method |
| CN102502952A (en) * | 2011-11-08 | 2012-06-20 | 清华大学 | Drinking water treatment aeration carbon sand filtering tank capable of improving ammonia nitrogen removal capacity |
| CN203392918U (en) * | 2013-08-02 | 2014-01-15 | 大连玉源环境工程有限公司 | Novel biological aerated filter |
| CN104108838A (en) * | 2014-08-06 | 2014-10-22 | 农业部环境保护科研监测所 | Method for removing iron and manganese from rural underground drinking water |
| CN104529077A (en) * | 2014-12-26 | 2015-04-22 | 上海市城市建设设计研究总院 | Water treatment device with combination of sand filtration and ozonation and activated carbon |
| CN205295076U (en) * | 2015-12-11 | 2016-06-08 | 交通运输部科学研究院 | Environmental sewage treatment system device of service area based on bological aerated filter |
| CN205635292U (en) * | 2016-05-28 | 2016-10-12 | 河北安居塑料制品有限公司 | Sewage treatment ware is used at rural family |
| CN206934828U (en) * | 2017-07-06 | 2018-01-30 | 山东师范大学 | One kind backwash filter tank |
| CN208545270U (en) * | 2018-05-22 | 2019-02-26 | 中国市政工程中南设计研究总院有限公司 | Composite flow filter tank and combination thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张学洪等: "《工业废水处理工程实例》", 31 March 2009, 冶金工业出版社, pages: 23 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206173173U (en) | Rural sewage dephosphorization denitrogenation sewage treatment plant that no mud discharged | |
| WO2022041733A1 (en) | Vertical subsurface flow wetland and water distribution method | |
| CN207566980U (en) | A kind of upward flow denitrification deep-bed filter system | |
| CN204170467U (en) | A kind of conventional rapid filter adopting combined water and air backwash | |
| CN109942081A (en) | A kind of novel denitrification filter tank technique and device based on organic polymer carrier | |
| CN108635919A (en) | A kind of Aerated gas-water back-impacting washing method without backwash water pump and backwash pond | |
| CN204017466U (en) | A kind of efficient water purification V-type filter tank | |
| CN205699641U (en) | Filter compressed air back-flushing device | |
| CN214528570U (en) | Combined filter of carbon filter and sand filter | |
| CN206666221U (en) | deep bed denitrification filter pool | |
| CN208545270U (en) | Composite flow filter tank and combination thereof | |
| CN212924592U (en) | Filtering workshop of combined filter tank | |
| CN103253837B (en) | Denitrification filter system | |
| CN208152137U (en) | Biological delaying basin | |
| CN208055012U (en) | A kind of sewage denitrification processing system | |
| CN108640425A (en) | Composite flow filter tank and combination thereof | |
| CN207520666U (en) | A kind of efficient filter tank | |
| CN206308105U (en) | For the biological activated carbon processing system of advanced treatment of industrial waste water | |
| CN211497306U (en) | Deep bed denitrification filter | |
| CN109650469B (en) | Sewage pretreatment device | |
| CN107935174A (en) | A kind of sewage denitrification processing system | |
| CN114482195A (en) | Urban and rural water supply integrated system taking surface water as water source and treatment method | |
| CN208824005U (en) | A kind of upward flow biological activated carbon filter | |
| CN208893690U (en) | A kind of improved active carbon shutter filter | |
| CN112675581A (en) | Long-path graded deep purification composite filter material filter tank |
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 |