JPH0271896A - Aerobic treating device - Google Patents
Aerobic treating deviceInfo
- Publication number
- JPH0271896A JPH0271896A JP63222068A JP22206888A JPH0271896A JP H0271896 A JPH0271896 A JP H0271896A JP 63222068 A JP63222068 A JP 63222068A JP 22206888 A JP22206888 A JP 22206888A JP H0271896 A JPH0271896 A JP H0271896A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- diffuser
- filter
- state
- membrane filter
- 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 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005273 aeration Methods 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000008213 purified water Substances 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 23
- 239000007788 liquid Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010802 sludge 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
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、被処理水を好気性生物処理する反応槽内に、
散気装置を設けると共に、前記反応槽における混合液を
固液分離して浄化水を取出す膜ろ過器を、浸漬配置して
ある好気性処理装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a reaction tank for aerobic biological treatment of water to be treated.
The present invention relates to an aerobic treatment device in which an aeration device is provided and a membrane filter for separating solid-liquid from the mixed liquid in the reaction tank and extracting purified water is arranged in an immersed manner.
従来の上記好気性処理装置では、酸素含有気体の供給に
よる曝気と、曝気に伴う上昇流及び気泡のろ過膜に対す
る衝突によって、ろ過膜に付着したスケールを効果的に
取り除いて、ろ過膜の目詰まりを防止するためのろ過膜
洗浄とを行うために、第２図に示すように、散気装置（
２）を膜ろ過器（３） の下方にだけ配置することが考
えられていた。In the above-mentioned conventional aerobic treatment equipment, scale adhering to the filtration membrane is effectively removed by aeration by supplying oxygen-containing gas, and the upward flow accompanying the aeration and the collision of bubbles against the filtration membrane, thereby preventing clogging of the filtration membrane. In order to clean the filtration membrane to prevent this, an aeration device (
2) was considered to be placed only below the membrane filter (3).
しかし、好気性処理のために連続的に供給される散気装
置（２）からの気泡が、常時ろ過膜（３Ａ）に衝突する
ために、ろ過膜（３Ａ）に対して、処理水の代わりに透
過する気泡が多くなり、そのために、膜ろ過器（３）か
らの浄化水の回収率が低下しやすいという欠点があった
。However, since the air bubbles from the air diffuser (2) that are continuously supplied for aerobic treatment collide with the filtration membrane (3A) at all times, the filtration membrane (3A) is used instead of treated water. There is a drawback that more air bubbles permeate through the membrane filter, which tends to reduce the recovery rate of purified water from the membrane filter (3).
本発明の目的は、ろ過膜の目詰まりを防止しながら、ろ
過膜を透過する気泡を少くする点にある。An object of the present invention is to reduce the number of bubbles passing through the filtration membrane while preventing clogging of the filtration membrane.
本発明の好気性処理装置の特徴構成は、散気装置を、膜
ろ過器と、前記膜ろ過器から横方向に離間した位置との
下方夫々に、分散配置し、それらの散気装置のうち、前
記膜ろ過器の下方のものに酸素含有気体を供給して曝気
とろ過膜洗浄とを同時に行う第１状態と、前記膜ろ過器
の下方以外のものにのみ酸素含有気体を供給して曝気す
る第２状態とに、間欠的に切換える切換手段を設けてあ
ることにあり、その作用効果は、次の通りである。The characteristic configuration of the aerobic treatment apparatus of the present invention is that air diffusers are disposed below a membrane filter and a position laterally spaced apart from the membrane filter, and among these air diffusers, , a first state in which oxygen-containing gas is supplied to the lower part of the membrane filter to perform aeration and filtration membrane cleaning at the same time; and a first state in which oxygen-containing gas is supplied only to parts other than the lower part of the membrane filter to aerate The second state is provided with a switching means for intermittently switching to the second state, and its effects are as follows.
つまり、切換手段によって第１状態に切換えられると、
曝気に伴って膜ろ過器下方の散気装置から出る気泡のろ
過膜に対する衝突と、気泡の上昇に伴う上昇流でろ過膜
に付着したスケールを除去してろ過膜洗浄を行い、また
、第２状態に切換えられると、膜ろ過器の下方以外の散
気装置からだけ曝気されるために、膜ろ過器のろ過膜に
は散気装置からの気泡が接触せず、気泡がろ過膜を透過
することはない。そして、第１状態と第２状態が間欠的
に切換えられるために、第２状態で浄化水の回収を主に
行い、第１状態で膜ろ過器の洗浄を主に行ってろ過膜の
目詰まりを防止できるように切換え時間を設定すれば、
ろ過膜の目詰まりを防止しながら、ろ過膜を透過する気
泡を少くできる。That is, when switched to the first state by the switching means,
The filtration membrane is cleaned by the collision of the air bubbles coming out of the air diffuser below the membrane filter with the aeration and the upward flow accompanying the rise of the air bubbles, which removes the scale attached to the filtration membrane. When switched to this state, aeration is carried out only from the air diffuser other than the one below the membrane filter, so air bubbles from the air diffuser do not come into contact with the filtration membrane of the membrane filter, and the air bubbles permeate through the filter membrane. Never. Since the first state and the second state are switched intermittently, the purified water is mainly collected in the second state, and the membrane filter is mainly cleaned in the first state, and the filter membrane is not clogged. If you set the switching time to prevent
While preventing clogging of the filtration membrane, it is possible to reduce the number of air bubbles passing through the filtration membrane.
従って、反応槽で酸素含有気体による好気性生物処理を
、良好に維持しながら、膜ろ過器からの浄化水の回収率
を、長期にわたって高く維持できるようになった。Therefore, it has become possible to maintain a high recovery rate of purified water from the membrane filter over a long period of time while maintaining good aerobic biological treatment using oxygen-containing gas in the reaction tank.
次に、本発明の実施例を、図面に基づいて説明する。 Next, embodiments of the present invention will be described based on the drawings.
第１図に示すように、被処理水を活性汚泥によって好気
性生物処理する反応槽（１）を設け、その反応槽（１）
内に、散気装置（２）を設けると共に、反応ｔ−ｉＪ
（１）における混合液を固液分離して浄化水を取出す膜
ろ過器（３） を、浸漬配置して好気性処理装置を構成
してある。As shown in Figure 1, a reaction tank (1) is provided for aerobic biological treatment of water to be treated using activated sludge.
A diffuser (2) is provided inside the chamber, and a reaction t-iJ
The membrane filter (3) for separating solid-liquid from the mixed liquid in (1) and extracting purified water is arranged in an immersed manner to constitute an aerobic treatment device.
前記膜ろ過器（３）は、チューブ状のろ過膜（３Ａ）を
多数本並設したものから成り、前記ろ過膜（３Ａ）に接
続した吸引ポンプ（Ｐ） によって、混合液からろ過膜
（３Ａ）を通して浄化水を反応槽（１）外に取出すよう
に構成してある。The membrane filter (3) consists of a large number of tube-shaped filtration membranes (3A) arranged in parallel, and a suction pump (P) connected to the filtration membranes (3A) removes the filtration membranes (3A) from the mixed liquid. ) so that purified water is taken out of the reaction tank (1).
前記散気装置（２）は、膜ろ過器（３）と、膜ろ過器（
３）から横方向に離間した位置との下方夫々に、分散配
置してあり、それらの散気装置（２）のうち、膜ろ過器
（３）の下方の第１散気装置（２人）にブロワ−（Ｂ）
からの酸素含有気体を、給気路（Ｒ）を介して供給して
曝気とろ過膜洗浄とを同時に行う第１状態と、第１散気
装置（２Ａ）への酸素含有気体の供給を停止して、膜ろ
過器（３）の下方以外の第２散気装置（２Ｂ）にのみブ
ロワ−（Ｂ）からの酸素含有気体を給気路（Ｒ）を介し
て供給して曝気する第２状態とに、間欠的に切換える切
換バルブ（ｖ）を給気路（Ｒ）に設けてある。The air diffuser (2) includes a membrane filter (3) and a membrane filter (
The first air diffuser (2 persons) is located below the membrane filter (3) among these air diffusers (2). blower (B)
A first state in which aeration and filter membrane cleaning are performed simultaneously by supplying oxygen-containing gas from the air supply path (R), and the supply of oxygen-containing gas to the first diffuser (2A) is stopped. Then, the oxygen-containing gas from the blower (B) is supplied only to the second diffuser (2B) other than the lower part of the membrane filter (3) via the air supply path (R). A switching valve (v) that is intermittently switched between the two states is provided in the air supply path (R).
そして、前記切換バルブ（Ｖ）による第２状態から第１
状態への切換えは、ろ過膜（３Ａ）のろ過機能が低下す
る時間に合わせて設定しておけば、長時間の連続運転が
可能であり、また、散気装置（２）からの気泡の上昇に
伴う上昇流と、気泡のろ過膜（３Ａ）に対する衝突とに
よる膜洗浄によって、ろ過膜（３Ａ）のろ過機能が回復
するに必要な最低時間だけ第１状態を維持して、続いて
第２状態に切換えるように設定しておけば、浄化水の回
収率をより高めることができる。Then, the switching valve (V) changes from the second state to the first state.
By setting the switching to the state according to the time when the filtration function of the filtration membrane (3A) deteriorates, continuous operation for a long period of time is possible, and the rising of air bubbles from the air diffuser (2) is possible. The first state is maintained for the minimum time necessary for the filtration function of the filtration membrane (3A) to be recovered by the membrane cleaning caused by the upward flow associated with the filtration membrane (3A) and the collision of air bubbles against the filtration membrane (3A), and then the second state is maintained. If the setting is made so that the state can be changed, the recovery rate of purified water can be further increased.
前記第１、第２散気装置（２人）、 （２Ｂ）は、夫々
１個づつ以外に複数づつ設けるものであっても良い。The first and second air diffusers (2 persons) and (2B) may be provided in plural numbers instead of one each.
前記第１状態と第２状態とを択一的に切換えるのに、切
換バルブ（Ｖ）で第１、第２散気装置（２Ａ）、 （２
Ｂ）への給気状態を切換えるのに代えて、第１散気装置
（２人）と第２散気装置（２Ｂ）とに各別に接続する２
個のブロワ−（Ｂ）を設け、それらのブロワ−（Ｂ）を
、背反的に作動と停止状態に切換える等の他の手段によ
って行っても良く、それらを、切換手段（４）と総称す
る。To selectively switch between the first state and the second state, the first and second air diffusers (2A), (2
Instead of switching the air supply state to B), the first air diffuser (2 people) and the second air diffuser (2B) are connected separately.
This may be done by other means, such as providing several blowers (B) and switching these blowers (B) contradictoryly between operating and stopping states, and these are collectively referred to as switching means (4). .
前記第１状態では、第１敗気装Ｗ（２Ａ）にのみ給気す
る以外に、第１散気装置（２人）と第２散気装置（２Ｂ
）の両方同時に給気しても良い。In the first state, in addition to supplying air only to the first air deflation system W (2A), the first air diffuser (2 people) and the second air diffuser (2B
) may be supplied at the same time.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
図面ｉよ本発明に係る好気性処理装置の実施例を示し、
第１図は概略図、第２図は従来例の概略図である。
（１）・・・・・・処理槽、（２）・・・・・・散気装
置、（３）・・・・・・膜ろ過器、（４）・・・・・・
切換手段。Drawing i shows an embodiment of the aerobic treatment device according to the present invention,
FIG. 1 is a schematic diagram, and FIG. 2 is a schematic diagram of a conventional example. (1)... Treatment tank, (2)... Air diffuser, (3)... Membrane filter, (4)...
switching means.
Claims (1)
装置（２）を設けると共に、前記反応槽（１）における
混合液を固液分離して浄化水を取出す膜ろ過器（３）を
、浸漬配置してある好気性処理装置であって、前記散気
装置（２）を、前記膜ろ過器（３）と、前記膜ろ過器（
３）から横方向に離間した位置との下方夫々に、分散配
置し、それらの散気装置（２）のうち、前記膜ろ過器（
３）の下方のものに酸素含有気体を供給して曝気とろ過
膜洗浄とを同時に行う第１状態と、前記膜ろ過器（３）
の下方以外のものにのみ酸素含有気体を供給して曝気す
る第２状態とに、間欠的に切換える切換手段（４）を設
けてある好気性処理装置。A diffuser (2) is installed in the reaction tank (1) for aerobic biological treatment of the water to be treated, and a membrane filter ( 3) is an aerobic treatment device in which the aeration device (2) is arranged in a submerged manner, the aeration device (2) is connected to the membrane filter (3), and the membrane filter (
3), and below the membrane filter (2).
3) a first state in which oxygen-containing gas is supplied to the lower part to perform aeration and filter membrane cleaning at the same time; and the membrane filter (3).
An aerobic treatment device provided with a switching means (4) for intermittently switching to a second state in which oxygen-containing gas is supplied and aerated only to areas other than the lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63222068A JPH0271896A (en) | 1988-09-05 | 1988-09-05 | Aerobic treating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63222068A JPH0271896A (en) | 1988-09-05 | 1988-09-05 | Aerobic treating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0271896A true JPH0271896A (en) | 1990-03-12 |
Family
ID=16776611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63222068A Pending JPH0271896A (en) | 1988-09-05 | 1988-09-05 | Aerobic treating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0271896A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207764A (en) * | 1990-10-16 | 1993-05-04 | Sharp Kabushiki Kaisha | Tumbler type washing/drying machine |
| WO2014174742A1 (en) | 2013-04-22 | 2014-10-30 | パナソニックＩｐマネジメント株式会社 | Liquid processing apparatus |
-
1988
- 1988-09-05 JP JP63222068A patent/JPH0271896A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207764A (en) * | 1990-10-16 | 1993-05-04 | Sharp Kabushiki Kaisha | Tumbler type washing/drying machine |
| WO2014174742A1 (en) | 2013-04-22 | 2014-10-30 | パナソニックＩｐマネジメント株式会社 | Liquid processing apparatus |
| US9663391B2 (en) | 2013-04-22 | 2017-05-30 | Panasonic Intellectual Property Management Co., Ltd. | Liquid processing apparatus |
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