JP3128596B2 - Aerobic biological treatment of wastewater - Google Patents
Aerobic biological treatment of wastewaterInfo
- Publication number
- JP3128596B2 JP3128596B2 JP25916991A JP25916991A JP3128596B2 JP 3128596 B2 JP3128596 B2 JP 3128596B2 JP 25916991 A JP25916991 A JP 25916991A JP 25916991 A JP25916991 A JP 25916991A JP 3128596 B2 JP3128596 B2 JP 3128596B2
- Authority
- JP
- Japan
- Prior art keywords
- wastewater
- biological treatment
- aerobic
- treated
- aerobic biological
- 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 - Lifetime
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
Landscapes
- Biological Treatment Of Waste Water (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、固定床型排水処理装
置を用いた排水の好気性生物処理方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerobic biological treatment method for wastewater using a fixed-bed wastewater treatment apparatus.
【０００２】[0002]
【従来の技術】従来の固定床型好気性生物処理装置で
は、図２に示すように、処理すべき排水は導管(11)によ
って装置上部に供給され、処理水は導管(12)によって装
置下部から排出されていた。また、空気または酸素は散
気部(17)を備えた導管(13)によって装置下部から供給さ
れ、導管(14)によって上部から排出されていた。2. Description of the Related Art In a conventional fixed-bed aerobic biological treatment apparatus, as shown in FIG. 2, waste water to be treated is supplied to an upper part of the apparatus by a conduit (11), and treated water is supplied to a lower part of the apparatus by a conduit (12). Had been exhausted from. Air or oxygen was supplied from the lower part of the apparatus by a conduit (13) provided with an air diffuser (17), and was discharged from the upper part by a conduit (14).
【０００３】[0003]
【発明が解決しようとする課題】上記構成では、処理水
排出口近辺の固定床(15)に付着した菌体が固定床から剥
離し、また沈澱した余剰菌体が装置から流出するので、
処理水中へのＳＳの流出が避けられなかった。In the above configuration, the cells adhering to the fixed bed (15) near the treated water discharge port are separated from the fixed bed, and the surplus cells that have settled out of the apparatus.
The outflow of SS into the treated water was inevitable.
【０００４】また、導管(16)によって装置の底部に洗浄
水を流入して定期的な逆洗を行わなければ、固定床間に
汚泥が詰まって固定床が閉塞するという問題があった。Unless washing water is introduced into the bottom of the apparatus by the conduit (16) to perform regular backwashing, sludge is clogged between the fixed beds and the fixed beds are blocked.
【０００５】この発明は、上記の実情に鑑みてなされた
ものであって、その目的は、ＳＳの流出がなく、また逆
洗が必要もなく、安定した処理水質が得られ、維持管理
の容易な排水処理方法を提供するにある。The present invention has been made in view of the above-mentioned circumstances, and has as its object that there is no outflow of SS, there is no need for backwashing, stable treated water quality is obtained, and maintenance and management are easy. To provide a wastewater treatment method.
【０００６】[0006]
【課題を解決するための手段】この発明は上記目的を達
成すべく工夫されたもので、装置内通過排水の流れ方向
を上行流とすることにより満足な結果が得られるという
知見を得て完成されたものである。DISCLOSURE OF THE INVENTION The present invention has been devised to achieve the above object, and has been completed upon finding that satisfactory results can be obtained by setting the flow direction of drainage passing through the apparatus to ascending flow. It was done.
【０００７】すなわち、この発明による排水の好気性生
物処理方法は、好気性または嫌気性生物処理によって得
られたＣＯＤ１０〜４０ｍｇ／リットルの比較的低濃度
の有機物処理排水を、粒径２〜９ｍｍの球形多孔質セラ
ミックス充填物を詰めた好気性生物処理装置で処理する
に当たり、当該排水を装置下部から供給し、排水の上行
流速を０．１〜１．０ｍ／時として、処理水を上部から
排出させるとともに、好気性生物処理に必要とされる酸
素含有ガスを装置下部から導入することにより、処理水
にＳＳを発生させないで、ＣＯＤ等の有機物を除去する
ことを特徴とするものである。この発明の排水処理方法
を適用する排水は、好気性または嫌気性生物処理によっ
て得られたＣＯＤ１０〜４０ｍｇ／リットルの比較的低
濃度の有機物処理排水である。More specifically, the aerobic biological treatment method for wastewater according to the present invention is a method for treating a relatively low-concentration organic matter treated wastewater having a COD of 10 to 40 mg / liter obtained by aerobic or anaerobic biological treatment with a particle diameter of 2 to 9 mm. In treating with the aerobic biological treatment device packed with the spherical porous ceramic filler, the wastewater is supplied from the lower part of the device, and the treated water is discharged from the upper part with the ascending flow rate of the wastewater being 0.1 to 1.0 m / hour. In addition, by introducing an oxygen-containing gas required for aerobic biological treatment from the lower part of the apparatus, organic matter such as COD is removed without generating SS in the treated water. The wastewater to which the wastewater treatment method of the present invention is applied is a relatively low-concentration organic matter treatment wastewater having a COD of 10 to 40 mg / liter obtained by aerobic or anaerobic biological treatment.
【０００８】この発明の排水処理方法では、図１に示す
ように、処理すべき排水は導管(1)によって装置下部に
供給され、処理水は導管(2) によって装置下部から排出
される。また、空気または酸素は散気部(4) を備えた導
管(3) によって装置下部に供給される。したがって、処
理すべき排水および空気または酸素はいずれも固定床
(5) を上向流として流通する。In the wastewater treatment method of the present invention, as shown in FIG. 1, wastewater to be treated is supplied to a lower part of the apparatus by a conduit (1), and treated water is discharged from a lower part of the apparatus by a conduit (2). Air or oxygen is supplied to the lower part of the apparatus by a conduit (3) having an air diffuser (4). Therefore, any wastewater and air or oxygen to be treated
(5) is distributed as upward flow.
【０００９】[0009]
【作用】装置内通過排水の流れ方向を上行流とすること
により、固定床下部では、新鮮な空気（酸素の豊富な状
態）と、処理すべき排水とが直接接触し、排水が効率よ
く処理される。また、下部の固定床より剥離した汚泥
は、上部の固定床に再付着するか、または、自己消化に
より消滅する。さらに汚泥の重力による固液分離などに
より装置上部より流出する処理水に含まれるＳＳは皆無
となる。[Function] By setting the flow direction of the wastewater passing through the apparatus to the upward flow, fresh air (oxygen-rich state) directly contacts the wastewater to be treated at the lower part of the fixed bed, and the wastewater is efficiently treated. Is done. Further, the sludge separated from the lower fixed bed reattaches to the upper fixed bed or disappears by self-digestion. Furthermore, there is no SS contained in the treated water flowing out from the upper part of the apparatus due to solid-liquid separation of the sludge by gravity or the like.
【００１０】また、このように、汚泥が固定床下部から
剥離し、固定床上部で消滅するプロセスにより、固定床
間に汚泥が詰まって固定床が閉塞するおそれがなくな
り、逆洗が不要となる。[0010] Further, as described above, the process in which the sludge is separated from the lower portion of the fixed bed and disappears in the upper portion of the fixed bed eliminates the possibility that the fixed bed is clogged with the sludge between the fixed beds and the fixed bed does not need to be washed. .
【００１１】[0011]
【発明の効果】上述のとおり、この発明の処理方法によ
れば、処理水の水質（ＳＳ）を良好ならしめるととも
に、逆洗を不要とすることができる。その結果、装置上
部の逆洗用スペースが不要となるとともに、逆洗用の装
置（ポンプ等）も不要となる。As described above, according to the treatment method of the present invention, the quality (SS) of treated water can be improved and backwashing can be eliminated. As a result, a backwashing space at the top of the apparatus is not required, and a backwashing device (such as a pump) is not required.
【００１２】また、逆洗が不要となることにより、逆洗
排水を処理する必要がなくなり、また逆洗時の排水処理
の中断がなくなることにより、２４時間連続処理を行う
ことができ、単位時間当りの処理水量が減少することに
よって装置の小型化を達成することができる。[0012] Further, since backwashing becomes unnecessary, there is no need to treat backwash wastewater, and since there is no interruption of wastewater treatment during backwashing, continuous treatment can be performed for 24 hours. By reducing the amount of treated water per unit, the size of the apparatus can be reduced.
【００１３】[0013]
【実施例】つぎに、この発明を具体的に説明するため
に、この発明の一例を実施例として挙げる。Next, an example of the present invention will be described as an example in order to specifically explain the present invention.
【００１４】図１を参照して、この発明の排水処理方法
を適用する排水は、好気性または嫌気性生物処理によっ
て得られたＣＯＤ１０〜４０ｍｇ／リットルの比較的低
濃度の有機物処理排水である。Referring to FIG. 1, wastewater to which the wastewater treatment method of the present invention is applied is a relatively low-concentration organic matter treated wastewater having a COD of 10 to 40 mg / liter obtained by aerobic or anaerobic biological treatment.
【００１５】好気性生物装置は、粒径２〜９ｍｍの球形
多孔質セラミックス充填物を固定床(5) に詰めたもので
ある。The aerobic biological device is a fixed bed (5) packed with a spherical porous ceramic packing having a particle size of 2 to 9 mm.
【００１６】処理すべき排水は導管(1) によって装置下
部に供給され、処理水は導管(2) によって装置下部から
排出される。また、空気または酸素は散気部(4) を備え
た導管(3) によって装置下部に供給される。したがっ
て、処理すべき排水および空気または酸素はいずれも固
定床(5) を上行流として流通する。The wastewater to be treated is supplied to the lower part of the apparatus by a conduit (1), and the treated water is discharged from the lower part of the apparatus by a conduit (2). Air or oxygen is supplied to the lower part of the apparatus by a conduit (3) having an air diffuser (4). Therefore, both the wastewater to be treated and the air or oxygen flow through the fixed bed (5) ascending.
【００１７】排水の上行流速を０．１〜１．０ｍ／時と
して、処理水を上部から排出させるとともに、好気性生
物処理に必要とされる酸素含有ガスを下部に導入するこ
とにより、処理水にＳＳを発生させないで、ＣＯＤ等の
有機物を除去するBy setting the ascending flow rate of the wastewater to 0.1 to 1.0 m / hour, the treated water is discharged from the upper part, and the oxygen-containing gas required for the aerobic biological treatment is introduced into the lower part. Remove organic matter such as COD without generating SS
【図１】この発明の排水処理方法を示すフローシートで
ある。FIG. 1 is a flow sheet showing a wastewater treatment method of the present invention.
【図２】従来の排水処理方法を示すフローシートであ
る。FIG. 2 is a flow sheet showing a conventional wastewater treatment method.
(1) …導管 (2) …導管 (3) …導管 (4) …散気部 (5) …固定床 (1) ... conduit (2) ... conduit (3) ... conduit (4) ... diffuser (5) ... fixed floor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 青木 茂 東京都江東区豊洲４丁目９番11号 日新 製糖株式会社豊洲工場技術部内 (72)発明者 田中 和彦 大阪市此花区西九条５丁目３番28号 日 立造船株式会社内 (72)発明者 志摩 宣行 大阪市此花区西九条５丁目３番28号 日 立造船株式会社内 (72)発明者 岩崎 公一 大阪市此花区西九条５丁目３番28号 日 立造船株式会社内 (56)参考文献 特開 昭61−153196（ＪＰ，Ａ) 特開 平２−39877（ＪＰ，Ａ) 特開 平２−152596（ＪＰ，Ａ) 特開 昭58−49492（ＪＰ，Ａ) 特開 平１−224095（ＪＰ，Ａ) 特開 平２−191595（ＪＰ，Ａ) 特開 昭63−232892（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C02F 3/06 ZAB C02F 3/10 ZAB C02F 3/26 ZAB ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeru Aoki 4-9-1-11 Toyosu, Koto-ku, Tokyo Nisshin Sugar Co., Ltd. Toyosu Factory Engineering Department (72) Inventor Kazuhiko Tanaka 5-3-1 Nishikujo, Konohana-ku, Osaka-shi No. 28 Nichidate Shipbuilding Co., Ltd. (72) Nobuyuki Shima, Inventor 5-28 Nishikujo, Konohana-ku, Osaka City (72) Inventor Koichi Iwasaki, 5-Nishikujo, Konohana-ku, Osaka-shi JP-A-61-153196 (JP, A) JP-A-2-39877 (JP, A) JP-A-2-152596 (JP, A) 58-49492 (JP, A) JP-A 1-224095 (JP, A) JP 2-191595 (JP, A) JP-A 63-232892 (JP, A) (58) Fields investigated (Int) .Cl. 7 , DB name) C02F 3/06 ZAB C02F 3/10 ZAB C02F 3/26 ZAB
Claims (1)
られたＣＯＤ１０〜４０ｍｇ／リットルの比較的低濃度
の有機物処理排水を、粒径２〜９ｍｍの球形多孔質セラ
ミックス充填物を詰めた好気性生物処理装置で処理する
に当たり、当該排水を装置下部から供給し、排水の上行
流速を０．１〜１．０ｍ／時として、処理水を上部から
排出させるとともに、好気性生物処理に必要とされる酸
素含有ガスを装置下部から導入することにより、処理水
にＳＳを発生させないで、ＣＯＤ等の有機物を除去する
ことを特徴とする、排水の好気性生物処理方法。An aerobic organism packed with a relatively low-concentration organic matter-treated wastewater having a COD of 10 to 40 mg / liter obtained by aerobic or anaerobic organism treatment and filled with a spherical porous ceramic filler having a particle size of 2 to 9 mm. In treating with the treatment device, the wastewater is supplied from the lower part of the device, the ascending flow rate of the wastewater is set to 0.1 to 1.0 m / hour, and the treated water is discharged from the upper part, and is required for aerobic biological treatment. An aerobic biological treatment method for wastewater, wherein an organic substance such as COD is removed without introducing SS from the treated water by introducing an oxygen-containing gas from a lower part of the apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25916991A JP3128596B2 (en) | 1991-10-07 | 1991-10-07 | Aerobic biological treatment of wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25916991A JP3128596B2 (en) | 1991-10-07 | 1991-10-07 | Aerobic biological treatment of wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0686993A JPH0686993A (en) | 1994-03-29 |
| JP3128596B2 true JP3128596B2 (en) | 2001-01-29 |
Family
ID=17330318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25916991A Expired - Lifetime JP3128596B2 (en) | 1991-10-07 | 1991-10-07 | Aerobic biological treatment of wastewater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3128596B2 (en) |
-
1991
- 1991-10-07 JP JP25916991A patent/JP3128596B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0686993A (en) | 1994-03-29 |
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