JPH04310204A - Water treating equipment - Google Patents
Water treating equipmentInfo
- Publication number
- JPH04310204A JPH04310204A JP7343091A JP7343091A JPH04310204A JP H04310204 A JPH04310204 A JP H04310204A JP 7343091 A JP7343091 A JP 7343091A JP 7343091 A JP7343091 A JP 7343091A JP H04310204 A JPH04310204 A JP H04310204A
- Authority
- JP
- Japan
- Prior art keywords
- water
- equipment
- washing water
- external pressure
- back washing
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000001914 filtration Methods 0.000 claims abstract description 38
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 3
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract description 8
- 238000011001 backwashing Methods 0.000 abstract 7
- 230000003134 recirculating effect Effects 0.000 abstract 3
- 230000001112 coagulating effect Effects 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000005708 Sodium hypochlorite Substances 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 150000004045 organic chlorine compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、河川などの原水を取水
して衛生的な水に浄化する水処理設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to water treatment equipment that takes raw water from rivers and the like and purifies it into sanitary water.
【０００２】0002
【従来の技術】従来の水処理設備は、たとえば図４に示
すようなものであった。図４において、取水口１から汲
み上げられる原水は除塵機２を通して着水井３に供給さ
れ、着水井３において消毒用の次亜塩素酸ソーダが次亜
塩素酸ソーダ貯留槽４から供給される。また、着水井３
から混和池５に送られた原水に対してカセイソーダ貯留
槽６ならびに凝集剤貯留槽７から供給されるカセイソー
ダなどの凝集剤・ 凝集助剤およびアルカリ剤が混和さ
れる。2. Description of the Related Art Conventional water treatment equipment is, for example, as shown in FIG. In FIG. 4, raw water pumped up from a water intake 1 is supplied to a landing well 3 through a dust remover 2, and at the landing well 3, sodium hypochlorite for disinfection is supplied from a sodium hypochlorite storage tank 4. In addition, landing well 3
A flocculant such as caustic soda, a flocculant aid, and an alkali agent supplied from a caustic soda storage tank 6 and a flocculant storage tank 7 are mixed with the raw water sent from the tank to the mixing pond 5.
【０００３】そして、混和池５にて凝集剤・ 凝集助剤
およびアルカリ剤を混和された原水はフロック形成池８
に送られ、原水中の重力沈降しがたい浮遊物質の粒子が
凝集されてフロックに形成される。さらに、フロックを
含む原水は薬品沈殿池９に送られてフロックが沈殿除去
され、上澄水が急速濾過池１１に送られる。また、場合
によっては混和池５よりマイクロフロック混和池１０を
通して急速濾過池１１へ送られる。[0003]Then, the raw water mixed with the flocculant, flocculation aid and alkaline agent in the mixing pond 5 is transferred to the flocculation pond 8.
The particles of suspended solids that are difficult to settle by gravity in the raw water are aggregated and formed into flocs. Further, the raw water containing flocs is sent to a chemical sedimentation tank 9 where the flocs are precipitated and removed, and the supernatant water is sent to a rapid filtration tank 11. Further, depending on the case, the micro flocs are sent from the mixing tank 5 to the rapid filtration tank 11 through the microfloc mixing tank 10.
【０００４】そして、急速濾過池１１に送られた上澄水
は濾材の濾過作用によって濁質が捕捉され、濾材を透過
した処理水は次亜塩素酸ソーダ貯留槽４から供給される
次亜塩素酸ソーダが添加された後に浄水池１２に送られ
る。
また、処理水は必要に応じて、オゾン接触槽１３および
活性炭濾過池１４よりなる高度処理設備に送られ、微量
有機物・ 有機塩素化合物・ アンモニア性窒素・ 臭
気成分などを除去される。[0004] The supernatant water sent to the rapid filtration basin 11 has suspended solids captured by the filtration action of the filter medium, and the treated water that has passed through the filter medium is treated with hypochlorous acid supplied from the sodium hypochlorite storage tank 4. After the soda is added, it is sent to the water purification pond 12. Furthermore, the treated water is sent to an advanced treatment facility consisting of an ozone contact tank 13 and an activated carbon filtration basin 14, as necessary, to remove trace organic matter, organic chlorine compounds, ammonia nitrogen, odor components, and the like.
【０００５】そして、急速濾過池１１で除去された濁質
は逆洗水によって洗い出され、濁質を含む逆洗水は排水
池１５を経て着水井３に戻される。また、薬品沈殿池９
で沈降した汚泥は排泥池１６を経て濃縮槽１７に送られ
、濃縮槽１７における上澄水は排水池１５に送られる。[0005] The turbidity removed in the rapid filtration basin 11 is washed out by backwash water, and the backwash water containing the turbidity is returned to the receiving well 3 via the drainage basin 15. In addition, chemical sedimentation tank 9
The settled sludge is sent to the thickening tank 17 via the sludge pond 16, and the supernatant water in the thickening tank 17 is sent to the drainage pond 15.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記した従来
の構成においては、急速濾過池１１の逆洗水が排水池１
５を経て着水井３に戻されるために、急速濾過池１１で
捕捉された濁質が再度フロック形成池８や薬品沈殿池９
における負荷として作用する問題があった。[Problems to be Solved by the Invention] However, in the above-described conventional configuration, the backwash water from the rapid filtration basin 11 flows into the drainage basin 1.
The suspended solids captured in the rapid filtration basin 11 are returned to the landing well 3 via the flocculation basin 8 and the chemical settling basin 9.
There was a problem in that it acted as a load on the vehicle.
【０００７】本発明は、上記課題を解決するもので、急
速濾過池における逆洗水を、濁質を除去した状態で着水
井に戻すことができる水処理設備を提供することを目的
とする。The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide water treatment equipment that can return backwash water from a rapid filtration basin to a receiving well with turbidity removed.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
に本発明は、水源から原水を取水し、混和・ 凝集設備
、沈殿池、濾過設備の各処理工程を通して原水を浄化し
、浄化された処理水を浄水池に貯留する水処理設備にお
いて、濾過設備から排出されて取水設備に戻される逆洗
水の還流経路に精密濾過装置を介装し、この精密濾過装
置が、濾過設備から排出される逆洗水を貯留する処理槽
と、逆洗水に浸漬して処理槽内に配置された外圧型セラ
ミックフィルターと、処理槽外に設けられて吸入側が外
圧型セラミックフィルターに連通するとともに、吐出側
が逆洗水の還流経路に連通する吸引ポンプとを備えた構
成としたものである。[Means for Solving the Problems] In order to solve the above problems, the present invention takes raw water from a water source, purifies the raw water through each treatment process of mixing/coagulation equipment, settling tank, and filtration equipment. In water treatment equipment that stores treated water in a water purification pond, a precision filtration device is installed in the recirculation path of backwash water discharged from the filtration equipment and returned to the water intake equipment, and this precision filtration equipment a treatment tank that stores backwash water; an external pressure ceramic filter that is immersed in the backwash water and placed inside the treatment tank; The structure includes a suction pump connected to the backwash water reflux path on the side.
【０００９】[0009]
【作用】上記した構成により、処理槽内の逆洗水を吸引
ポンプで外圧型セラミックフィルターを通して吸引する
ことによって、外圧型セラミックフィルターによる精密
濾過により逆洗水中に含まれる固体分の濁質が捕捉され
て処理槽内に残留し、外圧型セラミックフィルターを透
過した液体分が清澄な処理水となって処理槽の外部に抽
出され、逆洗水の還流経路を通って取水設備に戻される
。したがって、逆洗水に含まれる濁質が取水設備に還流
せず、混和・ 凝集設備、沈殿池、濾過設備において再
度負荷として作用することが防止される。[Function] With the above configuration, the backwash water in the treatment tank is sucked through the external pressure type ceramic filter using the suction pump, and solid turbidity contained in the backwash water is captured by precision filtration using the external pressure type ceramic filter. The liquid that remains in the treatment tank and passes through the external pressure ceramic filter becomes clear treated water, which is extracted outside the treatment tank and returned to the water intake equipment through the backwash water reflux route. Therefore, the suspended solids contained in the backwash water will not flow back to the water intake equipment, and will be prevented from acting as a load on the mixing/coagulation equipment, sedimentation tank, and filtration equipment again.
【００１０】0010
【実施例】以下本発明の一実施例を図面に基づいて説明
する。なお、図４に示した構成と同様の作用を行う部材
については同一番号を付して説明を省略する。図１〜図
３において、精密濾過装置２１は急速濾過池１１から排
出される逆洗水の還流経路、すなわち急速濾過池１１と
排水池１５の間に介装されている。そして、精密濾過装
置２１は急速濾過池１１に連通する処理槽２２と、処理
槽２２の内部に貯留される逆洗水２３に浸漬して配置さ
れた外圧型セラミックフィルター２４とを有しており、
外圧型セラミックフィルター２４は円筒状に形成された
複数のセラミックチューブ２５からなり、セラミックチ
ューブ２５の内部は処理槽２２の外部に設けた吸引ポン
プ２６の吸入側に連通している。
また、吸引ポンプ２６の吐出側は排水池１５に連通して
いる。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Note that members that perform the same functions as those in the configuration shown in FIG. 4 are given the same numbers, and description thereof will be omitted. In FIGS. 1 to 3, the precision filtration device 21 is interposed between the rapid filtration basin 11 and the drainage basin 15, in the reflux path of backwash water discharged from the rapid filtration basin 11. The precision filtration device 21 includes a processing tank 22 communicating with the rapid filtration basin 11 and an external pressure type ceramic filter 24 immersed in backwash water 23 stored inside the processing tank 22. ,
The external pressure type ceramic filter 24 is composed of a plurality of cylindrical ceramic tubes 25, and the inside of the ceramic tubes 25 communicates with the suction side of a suction pump 26 provided outside the processing tank 22. Further, the discharge side of the suction pump 26 communicates with the drainage pond 15 .
【００１１】そして、外圧型セラミックフィルター２４
の下方に位置して散気部２７が設けられており、散気部
２７は処理槽２２の外部に設けたブロワー装置２８の吐
出側に連通している。また、処理槽２２の底部は汚泥引
抜ポンプ２９の吸入側に連通している。[0011] Then, an external pressure type ceramic filter 24
An air diffuser 27 is provided below the processing tank 22 , and the air diffuser 27 communicates with the discharge side of a blower device 28 provided outside the processing tank 22 . Further, the bottom of the treatment tank 22 communicates with the suction side of the sludge drawing pump 29.
【００１２】以下、上記構成における作用について説明
する。急速濾過池１１から処理槽２２に供給された逆洗
水２３は外圧型セラミックフィルター２４を通して吸引
ポンプ２６で吸引され、外圧型セラミックフィルター２
４による精密濾過によって逆洗水２３に含まれる固体分
からなる濁質が捕捉される。また、散気部２７から散気
された空気３０のエアリフト作用によって上昇攪拌流Ａ
が生じ、上昇攪拌流Ａの剪断力によって外圧型セラミッ
クフィルター２４の各セラミックチューブ２５の表面に
付着するゲル層が除去される。そして、外圧型セラミッ
クフィルター２４を透過した液体分は清澄な処理水３１
となって抽出され、排水池１５を経て着水井３に還流さ
れる。また、捕捉された濁質は汚泥吸引ポンプ２９によ
って処理槽２２の外部に排出される。したがって、逆洗
水２３に含まれる濁質が着水井３に還流せず、混和池５
、フロック形成池８、薬品沈殿池９、マイクロフロック
混和池１０、急速濾過池１１において再度負荷として作
用することが防止される。[0012] The operation of the above configuration will be explained below. The backwash water 23 supplied from the rapid filtration basin 11 to the treatment tank 22 is sucked by the suction pump 26 through the external pressure type ceramic filter 24, and then
4 captures suspended matter consisting of solids contained in the backwash water 23. In addition, due to the air lift effect of the air 30 diffused from the aeration section 27, the agitation flow A rises.
occurs, and the gel layer adhering to the surface of each ceramic tube 25 of the external pressure type ceramic filter 24 is removed by the shear force of the rising stirring flow A. The liquid that has passed through the external pressure type ceramic filter 24 becomes clear treated water 31.
It is extracted and returned to the landing well 3 via the drainage pond 15. Further, the captured suspended matter is discharged to the outside of the treatment tank 22 by the sludge suction pump 29. Therefore, the turbidity contained in the backwash water 23 does not flow back into the landing well 3, and the mixing pond 5
, the floc formation basin 8, the chemical settling basin 9, the microfloc mixing basin 10, and the rapid filtration basin 11 are prevented from acting as a load again.
【００１３】[0013]
【発明の効果】以上述べたように本発明によれば、精密
濾過装置の外圧型セラミックフィルターにより逆洗水中
に含まれる固体分の濁質を捕捉することにより、外圧型
セラミックフィルターを透過した清澄な処理水を逆洗水
の還流経路を通って着水井に戻すことができ、逆洗水に
含まれる濁質が混和・ 凝集設備、沈殿池、濾過設備に
おいて再度負荷として作用することを防止できる。Effects of the Invention As described above, according to the present invention, the solid turbidity contained in the backwash water is captured by the external pressure type ceramic filter of the precision filtration device, thereby reducing the clarification that has passed through the external pressure type ceramic filter. The treated water can be returned to the receiving well through the backwash water return path, and the turbidity contained in the backwash water can be prevented from acting as a load on the mixing/coagulation equipment, sedimentation tank, and filtration equipment again. .
【図１】本発明の一実施例を示す全体構成図である。FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.
【図２】同実施例における精密濾過装置の全体構成図で
ある。FIG. 2 is an overall configuration diagram of a precision filtration device in the same embodiment.
【図３】同実施例における外圧型セラミックフィルター
の濾過作用を示す模式図である。FIG. 3 is a schematic diagram showing the filtration action of the external pressure type ceramic filter in the same example.
【図４】従来の水処理装置の全体構成図である。FIG. 4 is an overall configuration diagram of a conventional water treatment device.
２１ 精密濾過装置
２２ 処理槽
２３ 逆洗水
２４ 外圧型セラミックフィルター２５
セラミックチューブ
２６ 吸引ポンプ
２７ 散気部
２８ ブロワー装置21 Precision filtration device 22 Processing tank 23 Backwash water 24 External pressure type ceramic filter 25
Ceramic tube 26 Suction pump 27 Air diffuser 28 Blower device
Claims (1)
設備、沈殿池、濾過設備の各処理工程を通して原水を浄
化し、浄化された処理水を浄水池に貯留する水処理設備
において、濾過設備から排出されて取水設備に戻される
逆洗水の還流経路に精密濾過装置を介装し、この精密濾
過装置が、濾過設備から排出される逆洗水を貯留する処
理槽と、逆洗水に浸漬して処理槽内に配置された外圧型
セラミックフィルターと、処理槽外に設けられて吸入側
が外圧型セラミックフィルターに連通するとともに、吐
出側が逆洗水の還流経路に連通する吸引ポンプとを備え
たことを特徴とする水処理設備。Claim 1: In a water treatment facility that takes raw water from a water source, purifies the raw water through each treatment process of a mixing/coagulation facility, a settling tank, and a filtration facility, and stores the purified treated water in a water purification pond, a filtration facility. A precision filtration device is installed in the recirculation path of the backwash water discharged from the filtration facility and returned to the water intake equipment, and this precision filtration device connects the treatment tank that stores the backwash water discharged from the filtration equipment and the backwash water. It is equipped with an external pressure type ceramic filter that is immersed and placed inside the treatment tank, and a suction pump that is installed outside the treatment tank and has its suction side communicating with the external pressure type ceramic filter and its discharge side communicating with the reflux path of backwash water. Water treatment equipment characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7343091A JP2693053B2 (en) | 1991-04-08 | 1991-04-08 | Water treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7343091A JP2693053B2 (en) | 1991-04-08 | 1991-04-08 | Water treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04310204A true JPH04310204A (en) | 1992-11-02 |
| JP2693053B2 JP2693053B2 (en) | 1997-12-17 |
Family
ID=13518025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7343091A Expired - Lifetime JP2693053B2 (en) | 1991-04-08 | 1991-04-08 | Water treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2693053B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1157434A (en) * | 1997-08-26 | 1999-03-02 | Nkk Corp | Drain treatment device and drain treating method and clean water treatment installation |
| JP2005152694A (en) * | 2003-11-20 | 2005-06-16 | Kurita Water Ind Ltd | Water cleaning treatment facility |
| CN103432819A (en) * | 2013-09-04 | 2013-12-11 | 大连力达环境工程有限公司 | Upward-flow-direction filtering tank connected with common water treatment device |
-
1991
- 1991-04-08 JP JP7343091A patent/JP2693053B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1157434A (en) * | 1997-08-26 | 1999-03-02 | Nkk Corp | Drain treatment device and drain treating method and clean water treatment installation |
| JP2005152694A (en) * | 2003-11-20 | 2005-06-16 | Kurita Water Ind Ltd | Water cleaning treatment facility |
| CN103432819A (en) * | 2013-09-04 | 2013-12-11 | 大连力达环境工程有限公司 | Upward-flow-direction filtering tank connected with common water treatment device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2693053B2 (en) | 1997-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW589284B (en) | Liquid treatment method and apparatus | |
| JP2001276892A (en) | Drain treatment device | |
| KR20060111126A (en) | Physical and chemical waste water disposal plant and method therein | |
| JPH04310204A (en) | Water treating equipment | |
| CN106145429A (en) | Catalytic cracking flue gas desulfurization wastewater integrated treatment unit | |
| JPH04305287A (en) | Water treating equipment | |
| CN210945112U (en) | Leachate treatment system and pretreatment device for reducing inflow suspended matters and sulfides | |
| JP2695061B2 (en) | Water treatment equipment | |
| JPH04305288A (en) | Water treating equipment | |
| JP3697529B2 (en) | Membrane-based wastewater treatment method and water purification apparatus | |
| JPH11347595A (en) | Water purifying treatment equipment and concentration sludge thereof | |
| CN219429833U (en) | Oilfield fracturing fluid advanced treatment equipment | |
| JP3859402B2 (en) | Filtration basin washing wastewater treatment method | |
| CN218811175U (en) | Washing wastewater advanced treatment process equipment | |
| JPH04310206A (en) | Water treating equipment | |
| CN105000706B (en) | A kind of processing method of waste water of making a plate | |
| JPH03262589A (en) | Water treatment plant | |
| JP3874635B2 (en) | Sewage treatment method and treatment apparatus | |
| CN215208846U (en) | Environment-friendly industrial wastewater treatment device | |
| JPH0549812A (en) | Waste water treating device | |
| CN220999464U (en) | Waste water tubular membrane treatment device | |
| JPH02298398A (en) | Sewage treatment apparatus | |
| CN212924661U (en) | Silicon removing device | |
| KR101399059B1 (en) | Car washing installation | |
| JP2004074146A (en) | Method and equipment for treating impurity-containing liquid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080905 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090905 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100905 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100905 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110905 Year of fee payment: 14 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110905 Year of fee payment: 14 |