JPS6124079B2 - - Google Patents
Info
- Publication number
- JPS6124079B2 JPS6124079B2 JP15809981A JP15809981A JPS6124079B2 JP S6124079 B2 JPS6124079 B2 JP S6124079B2 JP 15809981 A JP15809981 A JP 15809981A JP 15809981 A JP15809981 A JP 15809981A JP S6124079 B2 JPS6124079 B2 JP S6124079B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- aerobic
- anaerobic
- state
- tanks
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 15
- 244000005700 microbiome Species 0.000 claims description 13
- 239000002351 wastewater Substances 0.000 claims description 11
- 230000000813 microbial effect Effects 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 16
- 229910052698 phosphorus Inorganic materials 0.000 description 16
- 239000011574 phosphorus Substances 0.000 description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000002245 particle Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000010865 sewage Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009423 ventilation Methods 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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
【発明の詳細な説明】
本発明は、廃水を処理する方法に関し、さらに
詳しくいえば、微生物を付着した充填材が充填さ
れた複数個の処理槽を使用した嫌気処理と好気処
理の組合せからなる廃水のリンを除去する微生物
処理の改良方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating wastewater, and more specifically, a method for treating wastewater using a combination of anaerobic treatment and aerobic treatment using a plurality of treatment tanks filled with filler to which microorganisms are attached. The present invention relates to an improved method of microbial treatment for removing phosphorus from wastewater.
従来より、嫌気好気雰囲気を繰返し受けると、
活性汚泥微生物は嫌気で微生物自体が有していた
リンを放出し好気で回りから放出した以上のリン
を摂取するという過剰摂取現象が知られている
が、通常この嫌気好気システムでは、処理槽内の
微生物濃度が高々5000ppmであり、大きな負荷
をとることができなかつた。一方、微生物が付着
した充填材を処理槽内に充填した流動床では、槽
内の雰囲気がほぼ一定であり、微生物に対して嫌
気好気のサイクルを与えることができず、前記過
剰摂取現象を利用したリン除去がなされていなか
つた。 Traditionally, when exposed to repeated anaerobic and aerobic atmospheres,
It is known that activated sludge microorganisms release their own phosphorus in anaerobic conditions and ingest more phosphorus than they released from their surroundings in aerobic conditions, but normally in this anaerobic and aerobic system, The microbial concentration in the tank was at most 5000 ppm, making it impossible to handle a large load. On the other hand, in a fluidized bed in which a treatment tank is filled with filler material to which microorganisms are attached, the atmosphere inside the tank is almost constant, and it is not possible to provide an anaerobic and aerobic cycle to the microorganisms. The phosphorus that was utilized had not been removed.
本発明者は、微生物が付着した担体粒子を充填
した処理槽を複数個使用し、これらを嫌気槽と好
気槽に構成し、原廃水を、はじめに嫌気槽で次に
好気槽で処理する方法を検討した。そして第１槽
を嫌気状態にし、第２槽を好気状態にし、処理対
象水を第１槽に導入して嫌気処理し、次いで第２
槽に流入させ好気処理する方法で、定量処理また
は定時間処理後に、第１槽を好気状態に第２槽を
嫌気状態に変えるとともに、処理対象水を第２槽
第１槽の順に通水する方法を見出した。このよう
な方法によれば、槽内の微生物が交互に嫌気、好
気の雰囲気下におかれ、嫌気状態で微生物が有し
ていたリンが放出され、好気状態で放出したリン
と共に原水中のリンも含めて微生物に摂取され
る。 The present inventor uses a plurality of treatment tanks filled with carrier particles to which microorganisms are attached, configures these into an anaerobic tank and an aerobic tank, and processes raw wastewater first in the anaerobic tank and then in the aerobic tank. We considered methods. Then, the first tank is brought into an anaerobic state, the second tank is brought into an aerobic state, and the water to be treated is introduced into the first tank for anaerobic treatment, and then into the second tank.
In this method, water flows into a tank for aerobic treatment, and after quantitative treatment or fixed-time treatment, the first tank is changed to an aerobic state and the second tank to an anaerobic state, and the water to be treated is passed through the second tank and the first tank in that order. I found a way to water it. According to this method, the microorganisms in the tank are placed in an anaerobic and aerobic atmosphere alternately, and the phosphorus held by the microorganisms in the anaerobic state is released, and the phosphorus released in the aerobic state is released into the raw water. phosphorus is also ingested by microorganisms.
かくして本発明は、微生物が付着した担体粒子
が充填された複数個の処理槽に処理対象水を順次
通水し、はじめに嫌気状態の槽で次に好気状態の
槽で微生物処理することからなる廃水処理方法に
おいて、所定量処理後に嫌気状態の槽の少なくと
も一個を好気状態に且つ好気状態の槽の少なくと
も一個を嫌気状態に変えるとともに、処理対象水
の通水経路をはじめに嫌気状態次に好気状態とな
るように変えることを特徴とする新規な廃水を処
理する方法を提供するものである。 Thus, the present invention consists of sequentially passing water to be treated through a plurality of treatment tanks filled with carrier particles to which microorganisms are attached, and performing microbial treatment first in an anaerobic tank and then in an aerobic tank. In a wastewater treatment method, after a predetermined amount of water has been treated, at least one of the tanks in an anaerobic state is changed to an aerobic state, and at least one of the tanks in an aerobic state is changed to an anaerobic state. The present invention provides a novel method for treating wastewater, which is characterized by converting it into an aerobic state.
本発明によれば、流動床式であるため槽内の微
生物濃度を従来法の浮遊式のものよりも大巾に高
めることができ、すなわち20000〜40000ppmに
まで高めることができるため、大きな負荷でリン
過剰摂取現象を利用でき、リン含有廃水から効率
よくリンを除去し得るものである。 According to the present invention, since it is a fluidized bed type, the concentration of microorganisms in the tank can be greatly increased compared to the conventional floating type, that is, it can be increased to 20,000 to 40,000 ppm, so it can be used under a large load. The phosphorus over-intake phenomenon can be used to efficiently remove phosphorus from phosphorus-containing wastewater.
本発明においては、微生物を付着した担体粒子
が充填された流動床式処理槽を複数個使用し、少
なくとも一個の槽を嫌気槽また少なくとも一個の
槽を好気槽として構成することが重要である。嫌
気槽及び好気槽は、夫々２個以上使用してもよ
い。そして、処理対象水は、はじめに嫌気槽に次
に好気槽の順で通水される。嫌気槽や好気槽が複
数個使用される場合には、処理対象水を複数個の
嫌気槽に通水した後、複数個の好気槽へ通水され
る。 In the present invention, it is important to use a plurality of fluidized bed treatment tanks filled with carrier particles to which microorganisms are attached, and to configure at least one tank as an anaerobic tank and at least one tank as an aerobic tank. . Two or more anaerobic tanks and two or more aerobic tanks may be used. The water to be treated is first passed through an anaerobic tank and then an aerobic tank. When a plurality of anaerobic tanks and aerobic tanks are used, the water to be treated is passed through the plurality of anaerobic tanks and then passed to the plurality of aerobic tanks.
かゝる通水径路で処理対象水を所定量処理した
後、嫌気槽が好気槽に且つ好気槽が嫌気槽に変え
られる。 After a predetermined amount of water to be treated is treated through such a water passage, the anaerobic tank is changed to an aerobic tank, and the aerobic tank is changed to an anaerobic tank.
嫌気槽や好気槽が複数個の場合には、少なくと
も夫々の一個が変えられればよく、勿論全槽が嫌
気、好気の状態を変えられてもよい。かゝる槽の
雰囲気の変更に伴つて、処理対象水の通水経路も
変えられる。すなわち、通水経路は、処理対象水
がはじめに嫌気槽で次に好気槽で処理されるよう
に変えられる。 When there are a plurality of anaerobic tanks and aerobic tanks, at least one of each tank can be changed, and of course the anaerobic or aerobic state of all the tanks can be changed. Along with changing the atmosphere in the tank, the water passage route for the water to be treated can also be changed. That is, the water flow path is changed so that the water to be treated is first treated in an anaerobic tank and then in an aerobic tank.
以上のような槽雰囲気と通水経路の変更は、処
理対象水を定量処理または定時間処理など所定量
処理後に、繰り返し実施され得る。嫌気槽と好気
槽が一個ずつの場合には、交互に嫌気状態と好気
状態とに変更される。 The above-described changes in the tank atmosphere and the water flow route can be repeatedly performed after a predetermined amount of water to be treated is treated, such as quantitative treatment or fixed-time treatment. When there is one anaerobic tank and one aerobic tank, the state is alternately changed to anaerobic state and aerobic state.
即ち、第１図で示したように、第１槽Ａと第２
槽Ｂと２槽によつて処理する場合には、当初は、
同図イのように第１槽Ａを嫌気状態にするととも
に第２槽Ｂは酸素含有ガスを吹込んで好気状態と
し、原水を矢印のように嫌気状態の第１槽Ａの下
部から通水し、この槽Ａからの処理水を好気状態
の第２槽に通水させ、所定量処理後同図ロのよう
に、第２槽Ｂの方を酸素の吹込みを止めて嫌気状
態にするとともに、第１槽Ａの方に酸素を吹込む
ようにしてこれを好気状態にし、通水経路を矢印
のように第２槽Ｂから第１槽Ａへと変更し、そし
て、また所定量処理後同図イのような槽雰囲気と
通気経路とを変更し、これを繰返し行なうのであ
る。なお、槽を好気状態にするには、上述したよ
うに酸素含有ガスを槽内に吹込む方法あるいは槽
流入水に酸素を溶解させ気泡の無い状態で槽内に
流入させる方法等、いかなる方法によつてもよ
い。 That is, as shown in Fig. 1, the first tank A and the second tank
When processing with tank B and two tanks, initially,
As shown in Figure A, the first tank A is brought into an anaerobic state, and the second tank B is made into an aerobic state by blowing in oxygen-containing gas, and the raw water is passed from the lower part of the first tank A, which is in an anaerobic state, as shown by the arrow. Then, the treated water from tank A is passed through a second tank in an aerobic state, and after a predetermined amount has been treated, the oxygen injection is stopped and the second tank B is brought into an anaerobic state, as shown in FIG. At the same time, oxygen is blown into the first tank A to bring it into an aerobic state, and the water flow path is changed from the second tank B to the first tank A as shown by the arrow. This process is repeated by changing the tank atmosphere and ventilation route as shown in Figure A. In addition, any method can be used to bring the tank into an aerobic state, such as by blowing oxygen-containing gas into the tank as described above, or by dissolving oxygen in the tank inflow water and allowing it to flow into the tank without bubbles. It may also depend on
また、嫌気槽と好気槽とをそれぞれ複数個設け
る場合には、メリーゴーランド式に嫌気、好気状
態に変えることも可能である。例えば、第２図の
ように、Ａ，Ｂ，Ｃ，Ｄ，Ｅの五槽を使用し、最
初のサイクルは同図ロのようにＡ，Ｂを嫌気槽、
Ｃ，Ｄ，Ｅを好気槽とし、次のサイクルでＡを好
気槽にＣを嫌気槽に変え更に次のサイクルでＢを
好気槽にＤを嫌気槽に変えるという如き変更が可
能である。なお、上述の所定量とは、嫌気槽全体
の通水時間が10分〜２時間、好気槽全体の通水時
間が30分〜３時間を意味するものである。 Further, when a plurality of anaerobic tanks and aerobic tanks are provided, it is also possible to change the state between anaerobic and aerobic in a merry-go-round style. For example, as shown in Figure 2, five tanks A, B, C, D, and E are used, and in the first cycle, A and B are anaerobic tanks, as shown in Figure B.
It is possible to make changes such as making C, D, and E into aerobic tanks, and in the next cycle changing A into an aerobic tank and C into an anaerobic tank, and then changing B into an aerobic tank and D into an anaerobic tank in the next cycle. be. In addition, the above-mentioned predetermined amount means that the water flow time for the entire anaerobic tank is 10 minutes to 2 hours, and the water flow time for the entire aerobic tank is 30 minutes to 3 hours.
本発明における処理槽の充填材の種類や形状お
よび大きさ、微生物の種類や濃度、処理対象水の
通水速度などは、従来より廃水の微生物処理に採
用されているものなどが、特に限定されることな
く適宜選定されて採用され得る。そして、本発明
においては、原廃水が嫌気槽に導入され好気槽か
ら処理水が流出されるのである。微生物処理の結
果生ずる余剰汚泥は好気槽から取り出されるが、
この場合には、担体粒子と余剰汚泥が好気槽から
取り出され、これらが分離された後担体は流動床
に返送される。 The type, shape, and size of the filling material of the treatment tank in the present invention, the type and concentration of microorganisms, the water flow rate of the water to be treated, etc. are not limited to those conventionally adopted for microbial treatment of wastewater. They can be selected and adopted as appropriate without having to do so. In the present invention, the raw wastewater is introduced into the anaerobic tank and the treated water is discharged from the aerobic tank. Excess sludge resulting from microbial treatment is removed from the aerobic tank,
In this case, carrier particles and excess sludge are removed from the aerobic tank and, after separation, the carrier is returned to the fluidized bed.
本発明において、好気槽の溶存酸素は1ppm以
上好ましくは5ppm以上の濃度に維持され、嫌気
槽では該濃度は0.7ppm以下、好ましくは0.5ppm
以下に維持される。好気状態の維持手段として
は、空気や酸素ガスを槽内に送気する、または槽
流入水に酸素を溶解して通水するなどが採用可能
であり、また嫌気状態の維持には窒素ガスなどを
送気あるいは循環送気することも可能である。 In the present invention, dissolved oxygen in the aerobic tank is maintained at a concentration of 1 ppm or more, preferably 5 ppm or more, and in the anaerobic tank, the concentration is 0.7 ppm or less, preferably 0.5 ppm.
Maintained below. As a means of maintaining an aerobic state, it is possible to adopt air or oxygen gas into the tank, or to dissolve oxygen in the tank inflow water and pass it through the tank.Also, to maintain an anaerobic state, nitrogen gas can be used to maintain an anaerobic state. It is also possible to supply or circulate air.
本発明方法は、種々の廃水の微生物処理に適用
され、特にリン含有廃水からリンを除去する方法
として有効である。例えば下水中にはＴ−Ｐとし
て通常２〜5ppmのリンが含まれているが従来の
活性汚泥法ではリンが除去されないばかりか下水
中のBOD除去をおこなうために６時間程度の処
理時間が必要であつた。本法によれば処理水中の
Ｔ−Ｐを1ppm以下にすることが可能であり同時
にBOD除去をおこなえる処理条件としては嫌気
処理が１時間以下、好気処理が２時間以下合計３
時間以下で処理でき、処理の高率化ならびに大巾
な省スペースを計ることができる。 The method of the present invention is applicable to microbial treatment of various wastewaters, and is particularly effective as a method for removing phosphorus from phosphorus-containing wastewater. For example, sewage usually contains 2 to 5 ppm of phosphorus as T-P, but the conventional activated sludge method not only does not remove phosphorus, but also requires about 6 hours of treatment time to remove BOD from sewage. It was hot. According to this method, it is possible to reduce the T-P in the treated water to 1 ppm or less, and the treatment conditions that can simultaneously remove BOD are anaerobic treatment for 1 hour or less and aerobic treatment for 2 hours or less.3
It can be processed in less than an hour, allowing for high processing efficiency and significant space savings.
次に、本発明の実施例について更に具体的に説
明するが、かゝる説明によつて本発明が何ら限定
されるものでないことは勿論である。 Next, embodiments of the present invention will be described in more detail, but it goes without saying that the present invention is not limited by such explanations.
実施例
原水はBOD約150ppmT−Ｐ約5ppmの人工下
水を用い容量８の流動床型反応器５本を使用
し、第２図に示すように２本を嫌気槽３本を好気
槽として嫌気時間40分、好気時間60分となるよう
にメリーゴーラウンド式に原水を通水したところ
嫌気槽出口でリン濃度は20〜30ppmに上昇し好
気槽出口ではリン濃度が1ppm以下になることが
観測された。さらにBODは10ppm以下となつ
た。Example The raw water was artificial sewage with a BOD of about 150 ppm and T-P of about 5 ppm, and five fluidized bed reactors with a capacity of 8 were used.As shown in Figure 2, two were used as anaerobic tanks, and three were used as aerobic tanks. When raw water was passed through in a merry-go-round style so that the time was 40 minutes and the aerobic time was 60 minutes, the phosphorus concentration rose to 20 to 30 ppm at the outlet of the anaerobic tank, and the phosphorus concentration decreased to less than 1 ppm at the outlet of the aerobic tank. observed. Furthermore, the BOD was below 10ppm.
第１図イ，ロは、本発明の一実施態様を示した
概略説明図、第２図イ，ロは、同他の実施態様を
示した概略説明図である。
Ａ，Ｂ，Ｃ，Ｄ，Ｅ……処理槽。
FIGS. 1A and 1B are schematic explanatory diagrams showing one embodiment of the present invention, and FIGS. 2A and 2B are schematic explanatory diagrams showing another embodiment of the present invention. A, B, C, D, E...processing tank.
Claims (1)
式の複数個の処理槽に処理対象水を順次通水し、
はじめに嫌気状態の槽で次に好気状態の槽で微生
物処理することからなる廃水処理方法において、
所定量処理後に嫌気状態の槽の少なくとも一個を
好気状態に且つ好気状態の槽の少なくとも一個を
嫌気状態に変えるとともに、処理対象水の通水経
路をはじめに嫌気状態次に好気状態となるように
変えることを特徴とする廃水を処理する方法。1 Water to be treated is sequentially passed through multiple fluidized bed type treatment tanks filled with filler with microorganisms attached,
In a wastewater treatment method that involves microbial treatment first in an anaerobic tank and then in an aerobic tank,
After processing a predetermined amount, at least one of the tanks in an anaerobic state is changed to an aerobic state, and at least one of the tanks in an aerobic state is changed to an anaerobic state, and the water flow path of the water to be treated is first changed to an anaerobic state and then to an aerobic state. A method of treating wastewater characterized by converting it into
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56158099A JPS5861886A (en) | 1981-10-06 | 1981-10-06 | Treatment for waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56158099A JPS5861886A (en) | 1981-10-06 | 1981-10-06 | Treatment for waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5861886A JPS5861886A (en) | 1983-04-13 |
| JPS6124079B2 true JPS6124079B2 (en) | 1986-06-09 |
Family
ID=15664276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56158099A Granted JPS5861886A (en) | 1981-10-06 | 1981-10-06 | Treatment for waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5861886A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6351878A (en) * | 1986-08-22 | 1988-03-04 | 株式会社平和 | Winning apparatus of pinball machine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179952U (en) * | 1983-05-18 | 1984-12-01 | 宮島 詔二 | Support metal fittings |
| JPH0461993A (en) * | 1990-06-28 | 1992-02-27 | Ebara Infilco Co Ltd | Method and apparatus for biological nitration and denitrification of organic polluted water |
| JP2009195850A (en) * | 2008-02-22 | 2009-09-03 | Soen Co Ltd | Water purifying unit and system |
| JP2012076014A (en) * | 2010-09-30 | 2012-04-19 | Toshiba Corp | Apparatus and method of water treatment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52124768A (en) * | 1976-04-12 | 1977-10-20 | Air Prod & Chem | Method of inhibiting breeding of fiborous biomass |
| JPS553845A (en) * | 1978-06-23 | 1980-01-11 | Kawasaki Heavy Ind Ltd | Biological treating method and apparatus for waste water |
-
1981
- 1981-10-06 JP JP56158099A patent/JPS5861886A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52124768A (en) * | 1976-04-12 | 1977-10-20 | Air Prod & Chem | Method of inhibiting breeding of fiborous biomass |
| JPS553845A (en) * | 1978-06-23 | 1980-01-11 | Kawasaki Heavy Ind Ltd | Biological treating method and apparatus for waste water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6351878A (en) * | 1986-08-22 | 1988-03-04 | 株式会社平和 | Winning apparatus of pinball machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5861886A (en) | 1983-04-13 |
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