JPH0380902A - Turbid water treatment device - Google Patents
Turbid water treatment deviceInfo
- Publication number
- JPH0380902A JPH0380902A JP21779489A JP21779489A JPH0380902A JP H0380902 A JPH0380902 A JP H0380902A JP 21779489 A JP21779489 A JP 21779489A JP 21779489 A JP21779489 A JP 21779489A JP H0380902 A JPH0380902 A JP H0380902A
- Authority
- JP
- Japan
- Prior art keywords
- water treatment
- turbid water
- flocculant
- treatment device
- stirring
- 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 description 35
- 238000003756 stirring Methods 0.000 claims description 20
- 230000008602 contraction Effects 0.000 claims description 4
- 239000008394 flocculating agent Substances 0.000 claims description 4
- 125000000129 anionic group Chemical group 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 239000000701 coagulant Substances 0.000 claims 3
- 230000000844 anti-bacterial effect Effects 0.000 claims 1
- 239000003899 bactericide agent Substances 0.000 claims 1
- 230000003115 biocidal effect Effects 0.000 claims 1
- 239000003139 biocide Substances 0.000 claims 1
- 239000003002 pH adjusting agent Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、濁水の処理装置に関するものである。さら
に詳しくは、この発明は、高効率でのフロック成分の沈
澱分離を可能とする濁水処理装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a turbid water treatment device. More specifically, the present invention relates to a turbid water treatment device that enables highly efficient precipitation separation of floc components.
（従来の技術とその課題）
従来より、工事現場、都市等からの排水を処理清浄化す
ることが様々な方法と装置によって行われており、この
うちの多くのものが、排水のフロック成分の凝集を行う
ための手段を備えている。(Conventional technologies and their problems) Conventionally, various methods and devices have been used to treat and purify wastewater from construction sites, cities, etc., and many of these methods have been used to treat and purify wastewater from wastewater flocs. It is equipped with means for performing agglomeration.
これらのフロック成分を含む濁水については、その濃度
に応じた対応策が検討され、種々の凝集沈澱の手段が開
発されてきてもいる。Countermeasures for turbid water containing these floc components have been studied depending on their concentration, and various coagulation and sedimentation methods have been developed.
しかしながら、従来の方法および装置においては、急速
に高効率で濁水を清浄化処理することや、高濃度な濁水
を短時間で処理するという面においては必ずしも満足で
きるものではなかった。However, conventional methods and devices have not always been satisfactory in terms of rapidly purifying turbid water with high efficiency or treating highly concentrated turbid water in a short period of time.
その原因としては、これまでの装置においては濁水と処
理剤との均一混合を高速、かつ高効率で行うことが困難
であるという課題があった。もちろん、撹拌翼の高速回
転による撹拌装置も考えられるが、装置の大型化、コス
トの著しい増大が避けられなかった。The reason for this is that with conventional devices, it is difficult to uniformly mix turbid water and treatment agents at high speed and with high efficiency. Of course, a stirring device using high-speed rotation of stirring blades could be considered, but this would inevitably lead to an increase in the size of the device and a significant increase in cost.
この発明は、以上の通りの事情に鑑みてなされたもので
あり、従来の濁水処理方法およびその装置の欠点を解消
し、高効率で、かつ装置の大型化やコストの増大をもた
らすことのない新しい処理装置を提供することを目的と
している。This invention was made in view of the above circumstances, and it solves the drawbacks of the conventional turbid water treatment method and its equipment, and provides a method that is highly efficient and does not cause an increase in the size or cost of the equipment. The purpose is to provide new processing equipment.
（課題を解決するための手段）
この発明は、上記の課題を解決するものとして、外筒部
に凝集剤供給管を連結した２重筒ｍ遺の撹拌混合装置に
おいて、凝集剤吐出口を有する内筒部に渦流生成の漸縮
小・漸拡大部を設けてなることを添加供給する流通系の
濁水処理装置を提供する。(Means for Solving the Problems) The present invention solves the above-mentioned problems by providing a stirring and mixing device with a double cylinder structure in which a flocculant supply pipe is connected to an outer cylinder part, which has a flocculant discharge port. To provide a flow-type turbid water treatment device for adding and supplying water, which is provided with a gradual contraction/gradual expansion part for vortex generation in an inner cylinder part.
また、この発明は、２重筒構造の流通系撹拌混合装置の
内ＨＭに、スパイラル状に凝集剤吐出口を設けた濁水処
理装置も提供するものである。The present invention also provides a turbid water treatment device in which a flocculant discharge port is provided in a spiral shape in the HM of the flow system stirring and mixing device having a double cylinder structure.
添付した図面に沿って、この発明の濁水処理装置につい
てさらに詳しく説明する。The turbid water treatment device of the present invention will be described in more detail with reference to the attached drawings.
第１図は、この発明の撹拌混合装置の一例を示した断面
図であり、また、第２図は、そのＡ−ＡＩＩＩ断面図で
ある。FIG. 1 is a cross-sectional view showing an example of the stirring and mixing device of the present invention, and FIG. 2 is a cross-sectional view taken along line A-AIII.
この第１図および第２図に示したように、この発明の撹
拌混合装置は、外筒部〈１）と内筒部（２〉との２重筒
構造を有しており、外筒部（１）には、凝集剤供給管（
３）を連結し、また、内筒部（２）には、凝集剤吐出口
（４）を有している。As shown in FIGS. 1 and 2, the stirring and mixing device of the present invention has a double cylinder structure consisting of an outer cylinder part (1) and an inner cylinder part (2). (1) has a flocculant supply pipe (
3), and the inner cylinder part (2) has a flocculant discharge port (4).
また、この例においては、内筒部（２）の両端部に渦流
生成用の漸縮小・漸拡大部（５）を設ｃｌてもいる。こ
のような装置においては、図中の矢印（ａ）方向から流
通された濁水は、漸縮小・漸拡大部（５）において半径
方向に生じるベクトルと、管軸方向とのベクトルとの合
成によって渦流、すなわちスパイラル流を生成する。こ
のスパイラル流は、出口部のもう−っの漸縮１１い漸拡
大部（５）の存在によって補強され、スパイラル流とし
て継続する。Further, in this example, gradually contracting/gradually expanding portions (5) for generating a vortex flow are provided at both ends of the inner cylinder portion (2). In such a device, turbid water flowing from the direction of arrow (a) in the figure becomes a vortex due to the combination of a vector generated in the radial direction in the gradual contraction/gradual expansion part (5) and a vector in the tube axis direction. , that is, generates a spiral flow. This spiral flow is reinforced by the presence of another gradual expansion section (5) at the outlet and continues as a spiral flow.
このような渦流、すなわちスパイラル流に対して吐出口
（４）より凝集剤を溶液、あるいはスラリーとして吐出
させる。こうすることにより凝集剤は、濁水に高速で均
一に拡散混合される。これまでの撹拌羽根回転による撹
拌に比べ、はるかに効率よく、しかも、簡便、低コスト
での均一混合が可能となる。The flocculant is discharged as a solution or slurry from the discharge port (4) against such a vortex flow, that is, a spiral flow. By doing this, the flocculant is uniformly diffused and mixed into the turbid water at high speed. Compared to conventional stirring by rotating a stirring blade, homogeneous mixing can be achieved much more efficiently, easily, and at low cost.
凝集剤吐出口（４）は、第１図のように、内筒部（２〉
にスパイラル状に形成することが好ましいが、特にこの
ような配置でなくともよい、装置の大きさ、処理量に対
してその配置や配置個数を決めればよい。As shown in FIG. 1, the flocculant discharge port (4)
Although it is preferable to form them in a spiral shape, it is not necessary to arrange them in this particular manner, and the arrangement and number of the arrangement may be determined based on the size of the apparatus and the throughput.
また、凝集剤供給管（３）も、複数個所に設けてもよい
、たとえば外筒部く１）に対向配置してもよいし、位置
を管軸方向にずらして配置してもよい。Further, the flocculant supply pipe (3) may be provided at a plurality of locations, for example, may be arranged facing the outer cylinder portion 1), or may be arranged at a position shifted in the direction of the pipe axis.
凝集剤は、ボンダによって圧入することができる。この
圧入の圧力が大きい場合などは、以上の例に限定される
ことなく、漸縮小・、漸拡大部〈５）を設けることなく
、スパイラル状の吐出口（４）の配置のみによっても渦
流生成と、凝集剤の均一高速撹拌混合が可能になる。The flocculant can be press-fitted by a bonder. In cases where the press-fitting pressure is large, the vortex can be generated by simply arranging the spiral discharge port (4), without being limited to the above example, and without providing the gradual contraction/expansion section (5). This enables uniform high-speed stirring and mixing of the flocculant.
第３図は、この発明の処理装置の全体構成を例示したも
のである。この例においては、上記した撹拌混合装置を
４個断続的に流通系管路に配置した構成を有している。FIG. 3 illustrates the overall configuration of the processing device of the present invention. This example has a configuration in which four of the above-mentioned stirring and mixing devices are disposed intermittently in the flow system conduit.
撹拌混合装置（１０ａ）（１０ｃ）には、凝集剤溶解タ
ンク（１１）からの薬剤（α）を注入し、また、撹拌混
合装置（１０ｂ）（１０ｄ）には、タンク（１２）から
の薬剤（β）を注入するようにしている。２種の薬剤（
α） （β）を各々、高分子アニオン系凝集剤および高
分子カチオン系凝集剤とすることにより、沈澱生成は極
めて高効率となる。The agent (α) from the flocculant dissolving tank (11) is injected into the stirring and mixing devices (10a) and (10c), and the agent from the tank (12) is injected into the stirring and mixing devices (10b and 10d). (β) is injected. Two types of drugs (
By using a polymeric anionic flocculant and a polymeric cationic flocculant as α) (β), the efficiency of precipitation becomes extremely high.
全体の流れとしては次のようになる。The overall flow is as follows.
すなわち、まず、濃度ｔＡ整池（１３）等から原水を調
整槽（１４）に移し、これを混合撹拌装置（１０ａ）＜
１０ｂ）（１０ｃ）（１０ｄ）へと送る。この時の流量
は流量計（１５〉により測定する。次いで凝集剤と混合
された濁水は、沈澱槽（１６）（１７）へと送る。この
沈澱ｍ（１６）（１７）にはシート隔壁（１８）や、布
ジョイン）（１９）設備を設けてもいる。沈澱した残泥
土（２０）は、所定の場所に廃棄する。清浄化された放
流水（２１）は、河川等へと放流する。That is, first, raw water is transferred from the concentration tA regulating pond (13) etc. to the regulating tank (14), and this is mixed and stirred by the mixing and stirring device (10a).
10b) (10c) (10d). The flow rate at this time is measured by a flowmeter (15>).Then, the turbid water mixed with the flocculant is sent to the settling tanks (16) and (17). 18) and cloth joining) (19) facilities are also installed. The settled residual mud (20) is disposed of at a predetermined location. The purified discharge water (21) is discharged into a river or the like.
たとえば、このような構成からなる濁水処理装置におい
ては、次のような処理実績が得られてもいる。For example, in a turbid water treatment apparatus having such a configuration, the following treatment results have been obtained.
原水（濁水）の調整槽への移送・・・ ０．５ｔ／分撹
拌混合装置処理量・・・・・・・・・・・・・・・・・
・ １００ｔ／時凝集薬剤注入量
α・・・・・・・・・・・・・・・・・・・・・・・・
２ ｊ／分β・・・・・・・・・・・・・・・・・
・・・・・・・ １．５１７分原水（濁水）濃度
平 均・・・・・・・・・・・・・・・・・・・・・
５ 、 ＯＯＯｐｐｍ最 低・・・・・・・・・・・・
・・・・・・・・・ ２．ＯＯＯｐｐｍ最 高・・・・
・・・・・・・・・・・・・・・・・２０．０００ｐｐ
ｎ放流水濁度・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・ ２５ｐｐＨＰＨ・・・
・・・・・・・・・・・・・・・・・・・・・・ ・・
・・・・ 中 性なお、濁水は、ダム建設工事現場
がらのものとした。また、凝集剤としては、高分子アニ
オン系／カチオン系凝集剤の２種類を用いた。Transfer of raw water (turbid water) to the adjustment tank... 0.5t/min Stirring mixer processing capacity...
・100t/hour agglomerating agent injection amount α・・・・・・・・・・・・・・・・・・・・・・・・
2 j/min β・・・・・・・・・・・・・・・・・・
・・・・・・・・・ 1.517 min Raw water (turbid water) concentration average・・・・・・・・・・・・・・・・・・・・・
5. OOOppm minimum...
・・・・・・・・・ 2. OOOppm the best...
・・・・・・・・・・・・・・・・・・20.000pp
n Effluent water turbidity・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・ 25ppHPH・・・
・・・・・・・・・・・・・・・・・・・・・・・・
...Neutral The turbid water was taken from a dam construction site. Furthermore, two types of flocculants were used: polymer anionic/cationic flocculants.
この結果からも明らかなように、良好な処理成績がこの
発明によって得られる。As is clear from this result, good processing results can be obtained by the present invention.
また、この発明においては、複数の撹拌混合装置として
、あるいは単独で、第４図に示したようなスクリュータ
イプの流通方式のものであってもよい、この場合の羽根
（２２）は、回転あるいは固定のいずれの形式のもので
もよい。Further, in the present invention, a screw type circulation system as shown in FIG. 4 may be used as a plurality of stirring/mixing devices or alone. In this case, the blades (22) may be rotated or It may be in any fixed format.
さらにまた、以上の説明からも明らかなように、この発
明の装置は凝集剤の混合だけでなく、ＰＨ調整剤、殺菌
剤、その他の薬剤注入による濁水、あるいは排水処理装
置としても有用である。Furthermore, as is clear from the above description, the apparatus of the present invention is useful not only for mixing flocculants, but also for treating turbid water by injecting pH regulators, disinfectants, and other chemicals, or as a wastewater treatment apparatus.
渦流形成による高速均一混合が可能となり、処理は極め
て効率化される。しかも簡単な装置でよく、低コストで
もある。The vortex formation enables high-speed, uniform mixing, making the process extremely efficient. Moreover, it requires a simple device and is low cost.
もちろん、この発明は以上の例によって限定されるもの
ではない。被処理水の種類、量、あるいは場所等に応じ
て適宜な細部構成とすることができる。Of course, the invention is not limited to the above examples. The detailed configuration can be made as appropriate depending on the type, amount, location, etc. of the water to be treated.
（発明の効果）
この発明により、以上詳しく説明したように、装置の大
型化、コスト増大をともなうことなく、高速均一混合の
可能な濁水、あるいはまた排水の処理装置が実現される
。(Effects of the Invention) As explained in detail above, according to the present invention, a treatment device for turbid water or wastewater capable of high-speed uniform mixing can be realized without increasing the size of the device or increasing the cost.
第１図は、この発明の撹拌混合装置の一例を示した断面
図である。第２図はその側断面図である。
第３図は、処理装置の全構成を例示した模式図である。
第４図は、別の撹拌混合装置の例を示した断面図である
。
１・・・外 筒 部
２・・・内 筒 部
３・・・供 給 管
４・・・吐 出 口
５・・・＊ａ小・漸拡大部
１０ａ、１０ｂ、１０ｃ、１０ｄ＝−・撹拌混合装置１
１．１２・・・タ ン り
１３・・・調 整 池
１４・・・調 整 槽
１５・・・流 量 計
１６．１７・・・沈 澱 槽
１８・・・シート隔壁
１９・・・布ジヨイント
２０・・・残 泥 土
２１・・・放 流 水
２２・・・羽 根FIG. 1 is a sectional view showing an example of the stirring and mixing device of the present invention. FIG. 2 is a side sectional view thereof. FIG. 3 is a schematic diagram illustrating the entire configuration of the processing device. FIG. 4 is a sectional view showing an example of another stirring and mixing device. 1...Outer cylinder part 2...Inner cylinder part 3...Supply pipe 4...Discharge port 5...*a Small/gradually expanding parts 10a, 10b, 10c, 10d=--Stirring Mixing device 1
1.12... Tanning tank 13... Adjustment tank 14... Adjustment tank 15... Flow rate Total 16.17... Sedimentation tank 18... Sheet partition wall 19... Cloth Joint 20... Residue mud Soil 21... Discharge Water 22... Feather
Claims (7)
拌混合装置において、凝集剤吐出口を有する内筒部に渦
流生成の漸縮小・漸拡大部を設けてなることを特徴とす
る流通系の濁水処理装置。(1) A stirring and mixing device with a double cylinder structure in which a flocculant supply pipe is connected to an outer cylinder part, characterized in that an inner cylinder part having a flocculant discharge port is provided with a gradual contraction/gradual expansion part for generating a vortex flow. Turbid water treatment equipment for distribution systems.
）記載の濁水処理装置。(2) Claim (1) in which the discharge ports are arranged in a spiral shape.
) Turbid water treatment equipment described.
項（１）記載の濁水処理装置。(3) The turbid water treatment device according to claim (1), further comprising a screw stirring section provided in the flow path of the distribution system.
処理装置。(4) The turbid water treatment device according to claim (1), wherein the flocculant is supplied in multiple stages.
供給する請求項（４）記載の濁水処理装置。(5) The turbid water treatment device according to claim (4), wherein the anionic and cationic flocculants are added and supplied in this order.
拌混合装置において、内筒部に凝集剤吐出口をスパイラ
ル状に設けてなることを特徴とする流通系の濁水処理装
置。(6) A flow-type turbid water treatment device characterized by a stirring and mixing device having a double cylinder structure in which a coagulant supply pipe is connected to the outer cylinder part, and a coagulant discharge port is provided in a spiral shape in the inner cylinder part. .
て、凝集剤に代えて、ＰＨ調整剤または殺菌・殺生物剤
を供給し、吐出させてなる水処理装置。(7) A water treatment device according to claim (1) or (6), in which a pH adjuster or a bactericide/biocide is supplied and discharged instead of the coagulant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21779489A JP2965582B2 (en) | 1989-08-24 | 1989-08-24 | Turbid water treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21779489A JP2965582B2 (en) | 1989-08-24 | 1989-08-24 | Turbid water treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0380902A true JPH0380902A (en) | 1991-04-05 |
| JP2965582B2 JP2965582B2 (en) | 1999-10-18 |
Family
ID=16709835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21779489A Expired - Fee Related JP2965582B2 (en) | 1989-08-24 | 1989-08-24 | Turbid water treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2965582B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU687318B2 (en) * | 1992-10-30 | 1998-02-19 | William Rodgers | Method and apparatus for removing solids from a contaminated liquid |
| US7156990B2 (en) * | 2002-11-13 | 2007-01-02 | Kurita Water Industries Ltd. | Coagulation-flocculation apparatus |
| KR101535571B1 (en) * | 2015-02-03 | 2015-07-10 | 코오롱이엔지니어링 주식회사 | Chemical mixer |
| JP2018103064A (en) * | 2016-12-22 | 2018-07-05 | 敏彦 小野 | Turbid water treatment device and turbid water treatment method |
| JP2018202330A (en) * | 2017-06-05 | 2018-12-27 | メタウォーター株式会社 | Dispersion device and processing system for processing object water |
-
1989
- 1989-08-24 JP JP21779489A patent/JP2965582B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU687318B2 (en) * | 1992-10-30 | 1998-02-19 | William Rodgers | Method and apparatus for removing solids from a contaminated liquid |
| US7156990B2 (en) * | 2002-11-13 | 2007-01-02 | Kurita Water Industries Ltd. | Coagulation-flocculation apparatus |
| KR101535571B1 (en) * | 2015-02-03 | 2015-07-10 | 코오롱이엔지니어링 주식회사 | Chemical mixer |
| JP2018103064A (en) * | 2016-12-22 | 2018-07-05 | 敏彦 小野 | Turbid water treatment device and turbid water treatment method |
| JP2018202330A (en) * | 2017-06-05 | 2018-12-27 | メタウォーター株式会社 | Dispersion device and processing system for processing object water |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2965582B2 (en) | 1999-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100196947B1 (en) | Sewage purification apparatus | |
| AU2006227100B2 (en) | Activated sludge process wtth ballasted flocculation | |
| NZ211037A (en) | Sewage purification system with three-stage chemical injection before separation of water and sludge | |
| US5124035A (en) | Apparatus for treatment of effluent | |
| CN109502882A (en) | A kind of sewage disposal device and its processing method | |
| JPH0380902A (en) | Turbid water treatment device | |
| KR19990023239A (en) | Livestock wastewater treatment system | |
| JP2001286873A (en) | Method and device for treating waste water | |
| KR100795228B1 (en) | Apparatus for mixing water and chemicals ,and mixing pond having the same | |
| WO1999037377A1 (en) | Coagulating/condensing device and method | |
| KR102511909B1 (en) | Cohesive agents mixing tank and mobile sewage purification apparatus having the same | |
| KR100776702B1 (en) | Apparatus for mixing water and chemicals, and mixing pond using the same | |
| JP2005305271A (en) | Apparatus for treating polluted water | |
| KR100776580B1 (en) | Inline mixing device for wastewater treatment | |
| KR200224737Y1 (en) | chemical feed tank in mixing basin | |
| PT85484B (en) | PROCESS FOR THE TREATMENT OF SEWERS AND OTHER IMPURE WATERS | |
| KR100946263B1 (en) | Coagulant mixing apparatus | |
| CN212246351U (en) | Sewage treatment system | |
| KR100367642B1 (en) | An equipment mixing wastewater and medicines by a whirlpool, and the method thereof | |
| JP7453068B2 (en) | Wastewater treatment method | |
| JP2002336605A (en) | Water treatment system and floc forming pipe | |
| JPH10211490A (en) | Highly advanced water treatment method and apparatus therefor | |
| KR19990008181U (en) | Chemical mixing device of water purification plant | |
| JP2015223525A (en) | Processing method and processing unit of organic waste water | |
| JP3410533B2 (en) | Sludge treatment equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |