JPH02268891A - Hollow-fiber membrane for treating sewage - Google Patents
Hollow-fiber membrane for treating sewageInfo
- Publication number
- JPH02268891A JPH02268891A JP8991631A JP9163189A JPH02268891A JP H02268891 A JPH02268891 A JP H02268891A JP 8991631 A JP8991631 A JP 8991631A JP 9163189 A JP9163189 A JP 9163189A JP H02268891 A JPH02268891 A JP H02268891A
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- bioreactor
- hollow
- fiber membrane
- membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 46
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 36
- 239000010865 sewage Substances 0.000 title abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 26
- 239000010802 sludge Substances 0.000 claims description 9
- 238000004065 wastewater treatment Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000005273 aeration Methods 0.000 abstract description 7
- 238000012856 packing Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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
【発明の詳細な説明】
［産業上の利用分野１
本発明は、バイオリアクタ（生物反応処理槽）と組み合
わせる固液分離用の中空糸膜の束を充填した汚水処理用
中空糸膜モジュールに関するものである。Detailed Description of the Invention [Industrial Application Field 1] The present invention relates to a hollow fiber membrane module for sewage treatment filled with a bundle of hollow fiber membranes for solid-liquid separation combined with a bioreactor (biological reaction treatment tank). It is.
［従来の技術］
従来、この種の汚水処理における固液分離膜としては、
平膜やチューブラ−膜を使用したものが知られている。[Conventional technology] Conventionally, solid-liquid separation membranes for this type of wastewater treatment are:
Those using flat membranes or tubular membranes are known.
しかしながら、上記従来の固液分離は、Ｍ表面に濃度分
極の発生と汚泥のゲル層が付着するのを防止するために
、混合液に乱流を与える必要があり、そのために所要動
力が大きくなるという問題点があった。However, in the conventional solid-liquid separation described above, it is necessary to provide a turbulent flow to the mixed liquid in order to prevent the occurrence of concentration polarization and the adhesion of a gel layer of sludge on the M surface, which increases the power required. There was a problem.
また、膜面に付着したデル層を剥離除去するためにボー
ル洗浄を必要とし、透過流量の制御が困難であった。In addition, ball cleaning was required to peel off and remove the Del layer attached to the membrane surface, making it difficult to control the permeation flow rate.
上記従来の問題点を解決するために、本発明者等は、生
物反応処理をした活性汚泥混合液中に中空糸膜を充填し
、該中空糸膜の内部を間欠的に吸引して上記汚水を透過
液と濃縮液とに固液分離すると共に、上記間欠吸引の吸
引・休止時間を変化させて、透過流量を制御するように
した汚水処理方法および装置を開発した。In order to solve the above-mentioned conventional problems, the present inventors filled a hollow fiber membrane into an activated sludge mixture that had been subjected to biological reaction treatment, and intermittently sucked the inside of the hollow fiber membrane to remove the sewage. We have developed a wastewater treatment method and device that separates wastewater into a permeated liquid and a concentrated liquid, and controls the permeation flow rate by changing the suction/pause time of the intermittent suction.
しかしながら、上記中空糸膜が固液分離槽やバイオリア
クタ内でその８Ｌ流により絡み付いて処理効率が低下す
るばかりでなく、中空糸膜の寿命が短く、その取り替え
が困難である等の問題点があった。However, the above-mentioned hollow fiber membranes not only become entangled in the solid-liquid separation tank or bioreactor due to the 8L flow, reducing treatment efficiency, but also have problems such as the hollow fiber membranes have a short lifespan and are difficult to replace. there were.
［発明が解決しようとする課題１
本発明は、上記従来の問題点を解決するためになされた
もので、その目的とするところは、中空糸膜の乱れや絡
み付きを無くして、その寿命を長くすることができるだ
けでなく、取り替えが容易で、処理能力や規模等の標準
化を図ることができる汚水処理用中空糸膜モジュールを
提供しようとするものである。[Problem to be Solved by the Invention 1] The present invention has been made in order to solve the above-mentioned conventional problems, and its purpose is to eliminate disturbance and entanglement of hollow fiber membranes and extend their lifespan. The purpose of the present invention is to provide a hollow fiber membrane module for wastewater treatment that not only can be used for various purposes, but also can be easily replaced and can standardize processing capacity, scale, etc.
［課題を解決するための手段１
本発明の汚水処理用中空糸膜モノニールは、好気性また
は嫌気性活性汚泥混合液を固液分離する多数の中空糸膜
の束をハニカムチューブ内に遊動自由に充填したことを
特徴とするものである。[Means for Solving the Problems 1] The hollow fiber membrane monoyl for sewage treatment of the present invention is a system in which a bundle of a large number of hollow fiber membranes for solid-liquid separation of an aerobic or anaerobic activated sludge mixture is freely movable within a honeycomb tube. It is characterized by being filled.
［実施例）
以下、本発明の一実施例について図面を参照しながら説
明する。[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.
ｆｐＪ１図において、１は除砂装置、２はスクリーンで
あって、原液中に混入している土砂等の固形物を除去す
るようになっている。In the fpJ1 diagram, 1 is a sand removal device, and 2 is a screen, which is designed to remove solid matter such as earth and sand mixed into the raw solution.
３は可変容量型のバイオリアクタ（生物反応路ｆ！Ｊ、
ＷＪ）であって、上記原液が流入管４を通して流入する
ようになっている０本実施例では自然流下するようにな
っているが、適宜ポンプ（図示せず）によりＣ共給する
ようにしてもよい。尚、原液が厨房排水のような油を含
む汚水の場合には、油分離を行ってからバイオリアクタ
に導入するようにする。3 is a variable capacity bioreactor (biological reaction path f!J,
WJ), in which the above-mentioned stock solution flows in through the inflow pipe 4.In this embodiment, it flows down naturally, but by co-feeding C with an appropriate pump (not shown). Good too. If the raw solution is wastewater containing oil, such as kitchen wastewater, it should be introduced into the bioreactor after oil separation.
上記原液の流入量は時間的に変化し、そのために、該バ
イオリアクタ３内の生物７１１７ツクを含む混合液、即
ち活性汚泥混合液５の水位は上下（ＨＷＬ、ＬＷＬ）に
変動するようになっている。The amount of inflow of the above-mentioned raw solution changes over time, and therefore, the water level of the mixed solution containing 7117 living organisms in the bioreactor 3, that is, the activated sludge mixed solution 5, fluctuates up and down (HWL, LWL). ing.
該バイオリアクタ３の底部には、散気管６が配設されて
いて、曝気ブロワ−７から送気される空気を上記混合液
５中に散気するようになっている。An aeration pipe 6 is disposed at the bottom of the bioreactor 3 to diffuse air sent from an aeration blower 7 into the liquid mixture 5.
８は流出管であって、上記バイオリアクタ３の底部から
混合液をポンプ９によｒ）排出するようになっている。Reference numeral 8 denotes an outflow pipe for discharging the mixed liquid from the bottom of the bioreactor 3 using a pump 9.
該流出管８から排出される混合液は、途中、スクリーン
１０および除砂装置１１等により固形物を除去されて固
液分離Ｗｉ１２に送られる。The mixed liquid discharged from the outflow pipe 8 is sent to the solid-liquid separation Wi12 after solids are removed by a screen 10, a sand removal device 11, etc. on the way.
上記固液分＠１ｆｌ１２内には、第２図に示すように、
中空糸膜モノニール１３が充填されている。As shown in Fig. 2, the solid-liquid content @1fl12 contains:
A hollow fiber membrane monoyl 13 is filled.
該中空糸膜モジュール１３は、第３図および第４図に示
すように、ハニカムチューブ）３ａ内に多数の中空糸膜
１３ｂの束を収容してｖｔ成されている。As shown in FIGS. 3 and 4, the hollow fiber membrane module 13 is constructed by accommodating a bundle of a large number of hollow fiber membranes 13b in a honeycomb tube 3a.
該中空糸膜１３ｂは、例えば、０．１ミクロン程度の微
細な穴を無数に有するポリエチレン等の合成樹脂製の直
径０．８０程度の糸状中空管である。The hollow fiber membrane 13b is, for example, a filament-like hollow tube made of synthetic resin such as polyethylene and having a diameter of about 0.80 mm and having countless minute holes of about 0.1 micron.
中空糸膜１３はｂはこれに限定するものではなく、これ
まで使用または開発されている中空糸膜であればいずれ
のものでもよい。The hollow fiber membrane 13 is not limited to b, and may be any hollow fiber membrane that has been used or developed so far.
該中空糸膜１３ｂの束の上端部は吸引室１３ｃ内に開口
した状態で固着されている。一方、中空糸膜１３ｂの下
端部は閉塞されている。尚、中空糸［１３ｂをループ状
に垂下させて、その両端を吸引室１３ｅで固着させても
よい。また、上記中空糸膜モジュール１３は横向き、或
いは斜め等いずれの方向に配向させてもよい。The upper end of the bundle of hollow fiber membranes 13b is fixed in a state where it opens into the suction chamber 13c. On the other hand, the lower end portion of the hollow fiber membrane 13b is closed. Note that the hollow fiber [13b may be suspended in a loop shape, and both ends thereof may be fixed in the suction chamber 13e. Further, the hollow fiber membrane module 13 may be oriented in any direction, such as horizontally or obliquely.
第１図において、１４は返送管であって、固液分離槽１
２内の濃縮液をバイオリアクタ３に返送するようになっ
ている。In FIG. 1, 14 is a return pipe, and the solid-liquid separation tank 1
The concentrated liquid in bioreactor 2 is returned to bioreactor 3.
１５は吸引装置であって、上記吸引室１３ｃ、すなわち
中空糸膜１３ｂの内を吸引して低圧状態にすることによ
り、混合液のうち固形分、微生物、ウィルス等を除いた
液部分のみを中空糸膜１３ｂの内部に透水させて固液分
離するようになっている。Reference numeral 15 denotes a suction device, which sucks the inside of the suction chamber 13c, that is, the hollow fiber membrane 13b to create a low pressure state, thereby sucking only the liquid portion of the mixed liquid excluding solids, microorganisms, viruses, etc. Water is allowed to permeate inside the thread membrane 13b to separate solid and liquid.
１６は間欠タイマーであって、上記吸引装置１５による
稼動時間を適宜設定することにより、その吸引時間と休
止時間とを変化せしめるようになっている。16 is an intermittent timer, and by appropriately setting the operation time of the suction device 15, the suction time and rest time are changed.
次に、上記実施例装置の作用を説明する。Next, the operation of the apparatus of the above embodiment will be explained.
まず、有機汚水の原液から除砂装置１およびスクリーン
２により砂等の固形分を分離して流入管４からバイオリ
アクタ３内に導入する。First, solids such as sand are separated from the raw organic wastewater using the sand removal device 1 and the screen 2 and introduced into the bioreactor 3 through the inlet pipe 4.
バイオリアクタ３内に導入された有機性汚水は活性汚泥
混合液５となる。活性汚泥混合液５の水位は、上記流入
管４からの流入量および流出管８からの流出量の変化に
応じてバイオリアクタ３内を上下に変動する。The organic wastewater introduced into the bioreactor 3 becomes an activated sludge mixture 5. The water level of the activated sludge mixture 5 fluctuates up and down in the bioreactor 3 according to changes in the amount of inflow from the inflow pipe 4 and the amount of outflow from the outflow pipe 8.
バイオリアクタ３の底部には散気管６が配置されていて
、曝気ブロワ−７から空気が供給されるので、バイオリ
アクタ３内に流入した汚水中の有機物は、好気性微生物
７０ツクに吸着され、さらに酸化分解されて浄化される
。An aeration pipe 6 is arranged at the bottom of the bioreactor 3, and air is supplied from an aeration blower 7, so that organic matter in the wastewater that has flowed into the bioreactor 3 is adsorbed by 70 aerobic microorganisms. It is further oxidized and decomposed and purified.
活性汚泥を含んだ処理水はポンプ９により流出管８から
固液分離槽１２に送られる。The treated water containing activated sludge is sent from the outflow pipe 8 to the solid-liquid separation tank 12 by the pump 9.
固液分離槽１２内に流入した混合液は、ハニカムチェー
ブ１３ａ内の中空糸膜１３ｂの微細な穴を通って吸引室
１３ｃに吸引され、その透過液は、送水管１７から処理
水として引き抜かれる。The mixed liquid that has flowed into the solid-liquid separation tank 12 is sucked into the suction chamber 13c through the fine holes of the hollow fiber membrane 13b in the honeycomb tube 13a, and the permeated liquid is drawn out from the water pipe 17 as treated water. It will be done.
中空糸膜１３ｂにより吸引されない？Ｉｋ縮液は返送管
１４を通ってバイオリアクタ３に戻される。Isn't it sucked by the hollow fiber membrane 13b? The Ik condensate is returned to the bioreactor 3 through the return pipe 14.
上記吸引装置１５は間欠タイマー１６により断続的に稼
動して、上記透過流量を制御するようになっている。該
間欠タイマー１７はコンピュータによりフントロールす
るとよい。The suction device 15 is operated intermittently by an intermittent timer 16 to control the permeation flow rate. The intermittent timer 17 may be controlled by a computer.
第５図は、上記中空糸膜モジュール１３をバイオリアク
タ３内に収容して装置全体をコンパクトに構成している
。In FIG. 5, the hollow fiber membrane module 13 is housed in the bioreactor 3 to make the entire device compact.
上記実施例はいずれも、好気性のバイオリアクタでの処
理について説明したが、本発明はこれに限定するらので
はなく、嫌気性のバイオリアクタであってもよい。この
場合、バイオリアクタには蓋をし、〃ス捕集と加熱が必
要である。Although the above embodiments have all been described with respect to treatment in an aerobic bioreactor, the present invention is not limited to this, and an anaerobic bioreactor may also be used. In this case, it is necessary to cover the bioreactor, collect the gas, and heat it.
［発明の効果１
１、多数の中空糸膜をハニカムチューブに収めてモノニ
ール化したので、取り扱いが容易となり、処理能力の標
準化を図ることができる。[Effects of the Invention 1 1. Since a large number of hollow fiber membranes are housed in a honeycomb tube and made into a monolayer, handling becomes easy and processing capacity can be standardized.
２、中空糸膜の絡み付きが無くなり、膜のか命が長くな
る。2. The hollow fiber membrane is no longer tangled, and the life of the membrane is extended.
３、固液分離槽やバイオリアクタ内への組み込みが容易
である。3. Easy to incorporate into solid-liquid separation tanks and bioreactors.
４、本発明は、下水処理施設、産業排水処理施設、排水
再利用施設および既設処理設備の改造等に適用すること
ができる。4. The present invention can be applied to sewage treatment facilities, industrial wastewater treatment facilities, wastewater reuse facilities, and modification of existing treatment facilities.
第１図は本発明の一実施例をホする汚水処理システムの
７０−図、第２図は固液分離槽内にハニカム型の中空糸
膜モジュールを充填した状態を示す上面図、第３図は中
空糸膜モノニールの斜視図、第４図は別の装置を示す７
０−図である。
１・・・除砂装置、２・・・スクリーン、３・・・バイ
オリアクタ、４・・・流入管、５・・・活性汚泥混合液
、６・・・散気管、７・・・曝気ブロワ−１８・・・流
出管、９・・・ポンプ、１０・・・スクリーン、１１・
・・除砂装置、１２・・・固液分離槽、１３・・・中空
糸膜モジュール、１３ａ・・・ハニカムチューブ、１３
ｂ・・・中空糸膜、１３ｅ・・・吸引室、１４・・・返
送管、１５・・・吸引装置、１６・・・間欠タイマー、
１７・・・送水管。Fig. 1 is a 70-view diagram of a sewage treatment system according to an embodiment of the present invention, Fig. 2 is a top view showing a state in which honeycomb-type hollow fiber membrane modules are filled in a solid-liquid separation tank, and Fig. 3 7 is a perspective view of the hollow fiber membrane monoyl, and FIG. 4 shows another device.
0-Fig. 1... Sand removal device, 2... Screen, 3... Bioreactor, 4... Inflow pipe, 5... Activated sludge mixture, 6... Aeration pipe, 7... Aeration blower -18...Outflow pipe, 9...Pump, 10...Screen, 11...
... Sand removal device, 12 ... Solid-liquid separation tank, 13 ... Hollow fiber membrane module, 13a ... Honeycomb tube, 13
b...Hollow fiber membrane, 13e...Suction chamber, 14...Return pipe, 15...Suction device, 16...Intermittent timer,
17... Water pipe.
Claims (1)
多数の中空糸膜の束をハニカムチューブ内に遊動自由に
充填したことを特徴とする汚水処理用中空糸膜モジュー
ル。1. A hollow fiber membrane module for wastewater treatment, characterized in that a bundle of a large number of hollow fiber membranes for solid-liquid separation of an aerobic or anaerobic activated sludge mixture is packed freely in a honeycomb tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8991631A JPH02268891A (en) | 1989-04-11 | 1989-04-11 | Hollow-fiber membrane for treating sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8991631A JPH02268891A (en) | 1989-04-11 | 1989-04-11 | Hollow-fiber membrane for treating sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02268891A true JPH02268891A (en) | 1990-11-02 |
Family
ID=14031894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8991631A Pending JPH02268891A (en) | 1989-04-11 | 1989-04-11 | Hollow-fiber membrane for treating sewage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02268891A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006007220A (en) * | 2005-09-16 | 2006-01-12 | Toshiba Corp | Anaerobic water treatment apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62262709A (en) * | 1986-05-09 | 1987-11-14 | Toshiba Corp | Hollow yarn membrane filter |
-
1989
- 1989-04-11 JP JP8991631A patent/JPH02268891A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62262709A (en) * | 1986-05-09 | 1987-11-14 | Toshiba Corp | Hollow yarn membrane filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006007220A (en) * | 2005-09-16 | 2006-01-12 | Toshiba Corp | Anaerobic water treatment apparatus |
| JP4557851B2 (en) * | 2005-09-16 | 2010-10-06 | 株式会社東芝 | Anaerobic water treatment device |
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