JPH06226294A - Method and device for treating purified water with a high degree - Google Patents
Method and device for treating purified water with a high degreeInfo
- Publication number
- JPH06226294A JPH06226294A JP5036048A JP3604893A JPH06226294A JP H06226294 A JPH06226294 A JP H06226294A JP 5036048 A JP5036048 A JP 5036048A JP 3604893 A JP3604893 A JP 3604893A JP H06226294 A JPH06226294 A JP H06226294A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- water
- treatment
- purified water
- reaction tank
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、浄水の高度処理方法及
び装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an advanced treatment method and apparatus for purified water.
【０００２】[0002]
【従来の技術】近年、水道水源の汚濁進行に伴う有機物
濃度の増加や富栄養化によるカビ臭の発生等の問題がク
ローズアップされ、良質かつ安全で美味しい水の供給が
求められている。従来の浄水処理は、前塩素処理、凝集
沈殿処理、砂ろ過処理及び後塩素処理により行われてい
るが、原水中に含まれる有機物（特にフミン質）と前塩
素処理工程で注入された塩素が反応し、発癌性の疑いの
あるトリハロメタン（このうちクロロホルムについては
発癌性が確認されている）を代表とした微量有機塩素化
合物を生成し、安全な水の供給が脅かされている。ま
た、従来の処理ではカビ臭の除去は望めず、上記の各処
理工程に加えてオゾン処理や活性炭処理などの高度処理
の導入が必要とされる。2. Description of the Related Art In recent years, problems such as an increase in the concentration of organic substances accompanying the progress of pollution of tap water sources and the generation of musty odor due to eutrophication have been highlighted, and there has been a demand for the supply of good, safe and delicious water. Conventional water purification treatment is performed by pre-chlorination, coagulation-sedimentation, sand filtration and post-chlorination, but the organic substances (particularly humic substances) contained in the raw water and the chlorine injected in the pre-chlorination process are Reacting, a trace amount of organic chlorine compounds typified by trihalomethane (of which chloroform has been confirmed to be carcinogenic) suspected of being carcinogenic is generated, threatening safe water supply. In addition, the conventional treatment cannot be expected to remove musty odor, and it is necessary to introduce advanced treatments such as ozone treatment and activated carbon treatment in addition to the above treatment steps.
【０００３】一方、人手不足や人件費高騰、また、地価
高騰による用地確保の困難などの問題から、無人化及び
省スペース化を目指した浄水技術、特に、除濁方法の改
善が急務となっており、その一つの手段として浄水処理
への膜分離技術の適用の検討が厚生省を中心に進められ
ている。除濁を目的とした場合に使用される膜の種類
は、精密ろ過膜と限外ろ過膜であるが、いずれの膜を用
いてもカビ臭物質はもとより、アンモニア、トリハロメ
タン前駆物質、トリハロメタンなどに対する高除去率は
望むことができない。On the other hand, due to problems such as lack of manpower, soaring labor costs, and difficulty in securing land due to soaring land prices, there is an urgent need to improve the water purification technology, especially the turbidity removal method, aiming at unmanned space saving. However, the Ministry of Health and Welfare is proceeding with the study of applying membrane separation technology to water purification treatment as one of the means. The types of membranes used for the purpose of turbidity are microfiltration membranes and ultrafiltration membranes.Even if any of the membranes is used, not only must be musty odor substances, but also ammonia, trihalomethane precursors, trihalomethanes, etc. High removal rates are undesired.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、前記従来技
術の欠点を解消し、膜分離技術を用いても従来除去でき
なかったカビ臭物質、アンモニア、トリハロメタン前駆
物質、トリハロメタンなどを含まない良質の上水を生じ
る浄水の高度処理方法を提供すると共に、該方法を実施
するコンパクトでメンテナンスフリーな浄水の高度処理
装置を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art and does not contain musty odor substances, ammonia, trihalomethane precursors, trihalomethanes, etc. which could not be removed by the conventional membrane separation technology. It is an object of the present invention to provide an advanced treatment method for purified water that produces clean water and a compact, maintenance-free advanced treatment apparatus for water that implements the method.
【０００５】[0005]
【課題を解決するための手段】本発明は、従来の前塩素
処理、凝集沈殿処理、オゾン処理、活性炭処理及び砂ろ
過処理に代えて、活性炭の存在でオゾン化空気の間欠的
導入下に行われる生物学的処理と膜分離とを組み合わせ
ることによって上記目的を達成したものである。すなわ
ち、本発明による浄水の高度処理装置は、粉末活性炭注
入設備とオゾン化空気導入管を備えた生物反応槽を膜分
離装置の前段に設けたことを特徴とするか、又は粉末活
性炭注入設備若しくは粒状活性炭注入設備とオゾン化空
気導入管を備えた生物反応槽内に膜モジュールを設置し
たことを特徴とするものである。さらに、本発明は、上
記のような浄水の高度処理装置を用いて原水を処理する
に当たり、オゾン化空気を間欠的に導入することを特徴
とする浄水の高度処理方法を提供するものである。The present invention is carried out under the intermittent introduction of ozonized air in the presence of activated carbon, instead of the conventional pre-chlorination treatment, coagulation sedimentation treatment, ozone treatment, activated carbon treatment and sand filtration treatment. The above object has been achieved by combining the biological treatment described above with membrane separation. That is, the advanced treatment apparatus for purified water according to the present invention is characterized in that a biological reaction tank equipped with a powdered activated carbon injection equipment and an ozonized air introduction pipe is provided in a preceding stage of the membrane separation apparatus, or a powdered activated carbon injection equipment or The feature is that the membrane module is installed in a biological reaction tank equipped with a granular activated carbon injection facility and an ozonized air introduction pipe. Further, the present invention provides an advanced treatment method for purified water, which comprises introducing ozonized air intermittently when treating raw water using the advanced treatment apparatus for purified water.
【０００６】[0006]
【実施例】次に、図面に示した実施例に基づいて本発明
をさらに具体的に説明するが、本発明はこれらの実施例
に限定されるものではない。図１は、本発明の一実施例
を示す浄水の高度処理装置の系統図である。図１に示し
た装置は、主として、除塵機１、粉末活性炭注入設備
２、オゾン化空気導入管３及び空気導入管４を備えた生
物反応槽５並びに膜分離装置６から成る。この装置を用
いて浄水の高度処理を実施する場合、原水はまず除塵機
１に送られ、ここで塵などが粗取りされてから、生物反
応槽５に流入する。従来法では、原水は一旦沈砂池で
０．２ｍｍ以上の粒子を沈降させているが、本発明の方
法では生物反応槽と膜でこの負荷を吸収することができ
るため、沈砂池は不要となる。図１に示した装置では、
粉末活性炭注入設備２を原水ラインに接続しているが、
粉末活性炭を生物反応槽５に直接注入する形式としても
よい。EXAMPLES Next, the present invention will be explained more specifically based on the examples shown in the drawings, but the present invention is not limited to these examples. FIG. 1 is a system diagram of an advanced treatment apparatus for purified water showing an embodiment of the present invention. The apparatus shown in FIG. 1 mainly comprises a dust remover 1, a powder activated carbon injection facility 2, a biological reaction tank 5 equipped with an ozonized air introduction pipe 3 and an air introduction pipe 4, and a membrane separation device 6. When high-level treatment of purified water is performed using this apparatus, raw water is first sent to the dust remover 1, where dust and the like are roughly removed, and then flow into the biological reaction tank 5. In the conventional method, the raw water once settles particles of 0.2 mm or more in the sand basin, but in the method of the present invention, the load can be absorbed by the biological reaction tank and the membrane, so that the sand basin is not necessary. . In the device shown in FIG.
Although the powdered activated carbon injection facility 2 is connected to the raw water line,
The activated carbon powder may be directly injected into the biological reaction tank 5.
【０００７】また、生物反応槽５の下部には、曝気用の
空気導入管４が備えられているが、この空気導入管４に
は、オゾン化空気導入管３が接続されている。通常は、
空気導入管４から空気のみを導入して生物処理を行えば
よいが、原水中に臭気が発生したときにオゾン化空気導
入管３からオゾン化空気を導入することにより臭気除去
率は著しく向上する。また、冬期に水温低下により、生
物反応槽内でアンモニアの酸化能力が低下した場合に、
オゾン化空気を導入することにより、微生物が活性化さ
れ、アンモニアの硝化効率が向上する。An air introducing pipe 4 for aeration is provided in the lower part of the biological reaction tank 5, and the ozonized air introducing pipe 3 is connected to the air introducing pipe 4. Normally,
Biological treatment may be performed by introducing only air from the air introduction pipe 4, but when odor is generated in the raw water, the odor removal rate is significantly improved by introducing ozonized air from the ozonized air introduction pipe 3. . In addition, when the oxidizing temperature of ammonia in the biological reaction tank decreases due to the decrease in water temperature in winter,
By introducing the ozonized air, the microorganisms are activated and the nitrification efficiency of ammonia is improved.
【０００８】臭気除去率の向上は、下記の実験により証
明された。上記生物反応槽に、臭気物質としてジオスミ
ン又は２−ＭＩＢの既知量を含む合成廃水を流入させ、
各廃水に粉末活性炭を１０mg／ｌ添加し、空気を導入し
た場合（従来法と示す）、粉末活性炭を５０mg／ｌ添
加し、空気を導入した場合（従来法と示す）及び粉末
活性炭１０mg／ｌを添加し、さらにオゾン化空気（オゾ
ン濃度１％）を吹き込んだ場合（本発明）について、臭
気物質の除去率を測定し、結果を表１に示す。表１に示
した結果から、本発明によれば、活性炭のみを添加した
場合に比べて、臭気物質の除去率が著しく向上し、５倍
量の活性炭を用いた従来法より高い臭気除去率が達成
されることが分かる。The improvement of the odor removal rate was proved by the following experiment. Introducing a synthetic wastewater containing a known amount of diosmin or 2-MIB as an odorant into the biological reaction tank,
When 10 mg / l of powdered activated carbon was added to each wastewater and air was introduced (shown as the conventional method), 50 mg / l of powdered activated carbon was added and air was introduced (shown as the conventional method) and 10 mg / l of powdered activated carbon Was added and ozonized air (ozone concentration 1%) was blown in (invention), the removal rate of odorous substances was measured, and the results are shown in Table 1. From the results shown in Table 1, according to the present invention, the removal rate of odorous substances is significantly improved as compared with the case where only activated carbon is added, and the odor removal rate higher than that of the conventional method using 5 times the amount of activated carbon is obtained. It turns out to be achieved.
【０００９】[0009]
【表１】 [Table 1]
【００１０】１２℃の低水温期に粉末活性炭１０mg／ｌ
を添加し、空気を導入して生物処理を行った場合（従来
法）及び粉末活性炭１０mg／ｌを添加し、オゾン濃度１
％のオゾン化空気を導入して生物処理を行った場合（本
発明）の処理水のアンモニア濃度を測定し、結果を表２
に示す。表２に示した結果から、本発明によれば、アン
モニア除去率が著しく改善されたことが分かる。10 mg / l of powdered activated carbon in the low temperature period of 12 ° C.
And biological treatment by introducing air (conventional method) and powdered activated carbon 10 mg / l were added, ozone concentration 1
% Of ozonized air was introduced to perform biological treatment (the present invention), the ammonia concentration of treated water was measured, and the results are shown in Table 2.
Shown in. From the results shown in Table 2, it can be seen that according to the present invention, the ammonia removal rate was remarkably improved.
【００１１】[0011]
【表２】 [Table 2]
【００１２】粉末活性炭及び生物処理汚泥は、混合系と
してライン８から引抜き、濃縮槽９に導入される。混合
汚泥としては、原水の負荷によって変わるが、ＳＲＴ５
０日〜１００日で運転するとよい。生物反応槽では、生
物の代謝物が発生するが、粉末活性炭で吸着されるた
め、処理水中にはほとんど存在しなくなる。そのため、
処理水の色度は、常に２度以下に保持することができ
る。ここで使用する粉末活性炭としては、石炭系でも木
質系でもよいが、活性炭の吸着面に微生物が付着しない
木質系が好適である。The activated carbon powder and the biologically treated sludge are drawn out from the line 8 as a mixed system and introduced into the concentration tank 9. As mixed sludge, depending on the load of raw water, SRT5
It is good to drive in 0 to 100 days. In the bioreactor, metabolites of organisms are generated, but since they are adsorbed by powdered activated carbon, they hardly exist in the treated water. for that reason,
The chromaticity of treated water can always be kept at 2 degrees or less. The powdered activated carbon used here may be coal-based or wood-based, but wood-based one in which microorganisms do not adhere to the activated carbon adsorption surface is preferable.
【００１３】生物反応槽５で処理された水は、次に膜分
離装置６へ導入され、ここで得られる膜処理水は、塩素
注入ライン７から塩素を注入され、塩素処理された後、
上水として供給することができる。膜分離装置６には、
各種の膜モジュールを用いることができ、例えば、チュ
ーブラ型、回転平膜型、ホローファイバー型などが挙げ
られる。特に、回転平膜モジュールは、濁質に対する耐
性を有し、高濁度の原水が流入しても、膜性能には影響
がなかった。また、他のモジュールに比べて、濃縮液
（生物反応槽へ循環する）の濃度を高くできるため、排
出汚泥量も少なくなる利点がある。The water treated in the biological reaction tank 5 is then introduced into the membrane separation device 6, and the membrane-treated water obtained here is injected with chlorine from the chlorine injection line 7 to be chlorinated,
It can be supplied as tap water. In the membrane separation device 6,
Various membrane modules can be used, and examples thereof include a tubular type, a rotary flat membrane type, and a hollow fiber type. In particular, the rotary flat sheet membrane module was resistant to turbidity, and even if high-turbidity raw water was introduced, the membrane performance was not affected. Further, as compared with the other modules, the concentration of the concentrated liquid (circulating to the biological reaction tank) can be increased, which has the advantage of reducing the amount of sludge discharged.
【００１４】水回収率を上げるため、膜分離装置６の濃
縮液をライン８から濃縮槽９へ導入するのが好ましい。
濃縮液中には活性炭及び濁質分が多量に存在するため、
沈降速度が速いので、濃縮槽９は小さい沈降槽でよく、
上澄水は水返送ライン１０から再び生物反応槽５に戻す
ことができ、濃縮汚泥は汚泥排出管１１から排出するこ
とができる。濃縮された汚泥は、脱水性が向上している
ため、その後の処分が容易である。In order to increase the water recovery rate, it is preferable to introduce the concentrated liquid of the membrane separation device 6 into the concentration tank 9 through the line 8.
Since a large amount of activated carbon and suspended matter are present in the concentrated liquid,
Since the sedimentation speed is high, the concentration tank 9 may be a small sedimentation tank,
The supernatant water can be returned to the biological reaction tank 5 again from the water return line 10, and the concentrated sludge can be discharged from the sludge discharge pipe 11. Condensed sludge has improved dewatering properties and is easy to dispose of thereafter.
【００１５】上記のような本発明方法で処理を行うこと
により従来の浄水場の滞留時間（約３時間）に比べて半
分の１．５時間で処理を行うことができ、装置がコンパ
クトになる。なお、本発明の方法は、下水などの有機物
質が主体の原水から良質の再生水を得るのにも適したシ
ステムである。この場合には、膜分離装置に導入される
液の汚泥濃度が高くなるため、膜としては回転平膜モジ
ュールが好適である。By performing the treatment by the method of the present invention as described above, the treatment can be performed in 1.5 hours, which is half the residence time (about 3 hours) of the conventional water purification plant, and the apparatus becomes compact. . The method of the present invention is also a system suitable for obtaining good quality reclaimed water from raw water mainly containing organic substances such as sewage. In this case, since the sludge concentration of the liquid introduced into the membrane separation device becomes high, the rotary flat membrane module is suitable as the membrane.
【００１６】図２には、本発明の別の実施例を示す処理
装置の系統図を示す。図２に示した装置では、粒状活性
炭注入設備１２から粒状活性炭が注入され、生物反応槽
５内に膜分離装置として回転平膜モジュール１３が水没
する位置に設けられている。この場合に回転平膜モジュ
ールの代わりにホローファイバー型、その他の膜モジュ
ールを用いてもよい。一定期間処理した後、活性炭及び
汚泥を多量に含む混合液をライン１４より排出し、濃縮
槽（図示していない）に導入して固液分離することがで
きる。このように生物反応槽５内に膜モジュールを設置
することによって、さらに装置のコンパクト化を図るこ
とができる。このような系では、粉末活性炭よりも粒状
活性炭を用いるのが好ましい。粒状活性炭を用いると、
処理の進行中に活性炭表面に微生物が付着してくるた
め、膜にはより粗大化した粒子が接触することになり、
膜面の擦洗効果が強く現れて、膜の透過速度が上昇す
る。FIG. 2 is a system diagram of a processing apparatus showing another embodiment of the present invention. In the apparatus shown in FIG. 2, granular activated carbon is injected from the granular activated carbon injecting facility 12, and a rotary flat membrane module 13 as a membrane separator is provided in the biological reaction tank 5 at a position submerged in water. In this case, a hollow fiber type or other membrane module may be used instead of the rotary flat membrane module. After treating for a certain period of time, a mixed liquid containing a large amount of activated carbon and sludge can be discharged from the line 14 and introduced into a concentration tank (not shown) for solid-liquid separation. By installing the membrane module in the biological reaction tank 5 in this way, the apparatus can be made more compact. In such systems it is preferred to use granular activated carbon rather than powdered activated carbon. With granular activated carbon,
Since microorganisms adhere to the surface of the activated carbon during the progress of the treatment, coarser particles come into contact with the membrane,
The scrubbing effect of the membrane surface appears strongly and the permeation rate of the membrane increases.
【００１７】[0017]
【発明の効果】本発明の浄水の高度処理装置は、従来の
前塩素処理、凝集沈殿処理、オゾン処理、活性炭処理及
び砂ろ過処理を省くことができ、生物反応槽と膜分離装
置とを組み合わせただけでよいので、著しくコンパクト
化されており、省スペースを実現したものである。さら
に、本発明の方法によればカビ臭物質を容易に高除去率
で除去でき、また、低水温でもアンモニアの高い除去率
を維持できる。さらに、前塩素処理を必要としないの
で、トリハロメタン前駆物質やトリハロメタンを発生せ
ず、良質で安全な上水を安定して供給することができ
る。The advanced treatment apparatus for purified water of the present invention can omit the conventional pre-chlorination treatment, coagulation sedimentation treatment, ozone treatment, activated carbon treatment and sand filtration treatment, and combines a biological reaction tank and a membrane separation device. Since it only needs to be played, it is extremely compact and saves space. Furthermore, according to the method of the present invention, a musty odor substance can be easily removed with a high removal rate, and a high removal rate of ammonia can be maintained even at a low water temperature. Further, since pre-chlorination is not required, trihalomethane precursor and trihalomethane are not generated, and high-quality and safe tap water can be stably supplied.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の一実施例を示す浄水の高度処理装置の
系統図である。FIG. 1 is a system diagram of an advanced treatment device for purified water according to an embodiment of the present invention.
【図２】本発明の別の実施例を示す浄水の高度処理装置
の系統図である。FIG. 2 is a system diagram of an advanced treatment device for purified water showing another embodiment of the present invention.
１ 除塵機 ２ 粉末活性炭注入設備 ３ オゾン化空気導入管 ４ 空気導入管 ５ 生物反応槽 ６ 膜分離装置 ７ 塩素注入ライン ９ 濃縮槽 １２ 粒状活性炭注入設備 １３ 回転平膜モジュール 1 Dust remover 2 Powder activated carbon injection equipment 3 Ozonized air introduction pipe 4 Air introduction pipe 5 Biological reaction tank 6 Membrane separation device 7 Chlorine injection line 9 Concentration tank 12 Granular activated carbon injection equipment 13 Rotating flat membrane module
───────────────────────────────────────────────────── フロントページの続き (72)発明者 奥野 裕 東京都千代田区内神田１丁目１番14号 日 立プラント建設株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yutaka Okuno 1-1-14 Kanda, Uchida, Chiyoda-ku, Tokyo Inside Hirit Plant Construction Co., Ltd.
Claims (3)
管を備えた生物反応槽を膜分離装置の前段に設けたこと
を特徴とする浄水の高度処理装置。1. An advanced treatment apparatus for purified water, characterized in that a biological reaction tank equipped with a powder activated carbon injection facility and an ozonized air introduction pipe is provided in the preceding stage of the membrane separation device.
設備とオゾン化空気導入管を備えた生物反応槽内に膜モ
ジュールを設置したことを特徴とする浄水の高度処理装
置。2. An advanced treatment apparatus for purified water, wherein a membrane module is installed in a biological reaction tank equipped with powder activated carbon injection equipment or granular activated carbon injection equipment and an ozonized air introduction pipe.
いて原水を処理するに当たり、オゾン化空気を間欠的に
導入することを特徴とする浄水の高度処理方法。3. An advanced treatment method for purified water, characterized by intermittently introducing ozonized air when treating raw water using the advanced treatment apparatus according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03604893A JP3168757B2 (en) | 1993-02-01 | 1993-02-01 | Advanced treatment method and equipment for purified water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03604893A JP3168757B2 (en) | 1993-02-01 | 1993-02-01 | Advanced treatment method and equipment for purified water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06226294A true JPH06226294A (en) | 1994-08-16 |
| JP3168757B2 JP3168757B2 (en) | 2001-05-21 |
Family
ID=12458831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03604893A Expired - Fee Related JP3168757B2 (en) | 1993-02-01 | 1993-02-01 | Advanced treatment method and equipment for purified water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3168757B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2847572A1 (en) * | 2002-11-22 | 2004-05-28 | Omnium Traitement Valorisa | Treatment purifying waste or potable water, adds activated carbon powder prior to membrane filtration |
| JP2006000854A (en) * | 2000-09-21 | 2006-01-05 | Ebara Corp | Method and apparatus for treating wastewater containing dioxins |
| JP2007136386A (en) * | 2005-11-21 | 2007-06-07 | Ngk Insulators Ltd | Membrane separation active sludge treatment equipment |
| CN102923809A (en) * | 2012-11-15 | 2013-02-13 | 广东卓信水处理设备有限公司 | Automatic preparation and wet-type adding device for powdered activated carbon |
| CN108698855A (en) * | 2016-01-21 | 2018-10-23 | 苏伊士国际公司 | Wastewater treatment method and equipment |
-
1993
- 1993-02-01 JP JP03604893A patent/JP3168757B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006000854A (en) * | 2000-09-21 | 2006-01-05 | Ebara Corp | Method and apparatus for treating wastewater containing dioxins |
| FR2847572A1 (en) * | 2002-11-22 | 2004-05-28 | Omnium Traitement Valorisa | Treatment purifying waste or potable water, adds activated carbon powder prior to membrane filtration |
| WO2004048277A1 (en) * | 2002-11-22 | 2004-06-10 | Otv Sa | Water treatment method using an inorganic powder reagent with high specific surface area including a step of recycling said reagent |
| US7172701B2 (en) * | 2002-11-22 | 2007-02-06 | Otv Sa S.A. | Water treatment method using an inorganic powder reagent with high specific surface area including a step of recycling said reagent |
| AU2003298373B2 (en) * | 2002-11-22 | 2008-10-16 | Veolia Water Solutions & Technologies Support | Water treatment method using an inorganic powder reagent with high specific surface area including a step of recycling said reagent |
| CN100436347C (en) * | 2002-11-22 | 2008-11-26 | Otv股份有限公司 | Water treatment method using an inorganic powder reagent with high specific surface area including a step of recycling said reagent |
| JP2007136386A (en) * | 2005-11-21 | 2007-06-07 | Ngk Insulators Ltd | Membrane separation active sludge treatment equipment |
| CN102923809A (en) * | 2012-11-15 | 2013-02-13 | 广东卓信水处理设备有限公司 | Automatic preparation and wet-type adding device for powdered activated carbon |
| CN108698855A (en) * | 2016-01-21 | 2018-10-23 | 苏伊士国际公司 | Wastewater treatment method and equipment |
| JP2019502548A (en) * | 2016-01-21 | 2019-01-31 | スエズ インテルナシオナール | Wastewater treatment methods and facilities |
| JP2022050606A (en) * | 2016-01-21 | 2022-03-30 | スエズ インテルナシオナール | Wastewater treatment method and facility |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3168757B2 (en) | 2001-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102503046B (en) | Advanced treatment system and method for high-concentration percolate in comprehensive garbage disposal plant | |
| CN101891336B (en) | System and method for leachate treatment in sanitary landfill | |
| US5362395A (en) | Method and apparatus for biologically purifying sewage which is organically loaded with substances difficult to decompose biologically or not decomposable biologically | |
| CN203568944U (en) | Coking wastewater reuse treatment system | |
| CN101148302A (en) | Method for treating waste water of livestock and fowl cultivation | |
| HK1076618A1 (en) | Process and assembly for the treatment of waste water on ships | |
| CN105481168A (en) | Coal gasification sewage comprehensive treatment method | |
| JP3227863B2 (en) | Ultrapure water production method | |
| CN107892440A (en) | A kind of pickles, the full reuse treatment process of salted vegetables high-salinity wastewater zero-emission | |
| JPH11285696A (en) | Device and method for sewage treatment | |
| JPH04227099A (en) | Method for purifying underground water and waste water | |
| KR102100991B1 (en) | Liquefied fertilizer purification apparatus using porous ceramic membrane | |
| JP2008510619A (en) | Anoxic biological reduction systems and methods | |
| JPH06226294A (en) | Method and device for treating purified water with a high degree | |
| CN111547954B (en) | Coal chemical wastewater treatment system | |
| CA2126156A1 (en) | Biological treatment of wastewater and facilities for its application | |
| JPH0366036B2 (en) | ||
| CN212269808U (en) | Reverse osmosis strong brine processing system | |
| CN211445406U (en) | Landfill leachate treatment device | |
| JPH05185093A (en) | Method for purifying water by using membrane | |
| JPH02164500A (en) | Water purifying treatment apparatus | |
| KR100561180B1 (en) | A method of treating sewage and high organic loading wastewater by microbial high rate reactor | |
| CN105859035A (en) | Reclaimed water reuse and treatment process | |
| JPS6331592A (en) | Method for making ultrapure water | |
| KR100273856B1 (en) | Sequencing batch reactor containing zeolite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |