JPS58216790A - Method and device for denitrifying and dephosphorizing sewage biologically - Google Patents
Method and device for denitrifying and dephosphorizing sewage biologicallyInfo
- Publication number
- JPS58216790A JPS58216790A JP57077119A JP7711982A JPS58216790A JP S58216790 A JPS58216790 A JP S58216790A JP 57077119 A JP57077119 A JP 57077119A JP 7711982 A JP7711982 A JP 7711982A JP S58216790 A JPS58216790 A JP S58216790A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- nitrification
- nitrogen
- denitrification
- anaerobic
- 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
【発明の詳細な説明】
この発明は、ＢＯＤ成分、窒素成分およびリン成分を含
む汚水、例えはし尿、下水その他の産業廃水などの汚水
（以下これ全便宜上「原水」というときもある。）全生
物学的に処理する方法およびその装置に関する。DETAILED DESCRIPTION OF THE INVENTION This invention is directed to the treatment of wastewater containing BOD components, nitrogen components, and phosphorus components, such as human waste, sewage, and other industrial wastewater (hereinafter sometimes referred to as "raw water" for convenience). The present invention relates to a biological treatment method and apparatus.
従来、このような汚水を処理する方法としては、ＢＯＤ
および窒素分を硝化脱室工程を有する処理法で処理した
のち、その処理水に凝集剤を添加して化学的にリン成分
を除去する方法、あるいＵＢＯＩＪおよびリン成分を生
物学的に処理する方法、すなわちリン成分全汚泥中に取
込んで除去する方法が知られている。Conventionally, methods for treating such wastewater include BOD
A method in which the phosphorus component is chemically removed by adding a flocculant to the treated water after the nitrogen content is treated with a treatment method that includes a nitrification and dechambering process, or a method in which UBOIJ and the phosphorus component are treated biologically. A method is known in which the entire phosphorus component is incorporated into the sludge and removed.
しかしながら、窒系成分とリン成分を汚水中から同時に
除去するには問題が多い。それは、脱窒処理に２ける硝
化工程の好気処理条件と脱リン処ｆ！ＪＶＣおける好気
処理条件に相違があり、このために同時に、期待する処
理水を得ることができなかったのである。However, there are many problems in simultaneously removing nitrogen components and phosphorus components from wastewater. It is the aerobic treatment conditions of the nitrification process in denitrification treatment and the dephosphorization process f! There was a difference in the aerobic treatment conditions at JVC, which made it impossible to obtain the expected treated water at the same time.
本発明者らは、鋭意研究の結果、脱窒処理における硝化
工４’３ｊｅ工夫することにより、ＢｏＤ成分、窒素成
分及びリン成分を同時に除去できる処理法の知見金得た
。As a result of intensive research, the present inventors have obtained knowledge of a treatment method that can simultaneously remove BoD components, nitrogen components, and phosphorus components by devising a nitrification process in denitrification treatment.
すなわち、本発明はＢＯＩ）成分、窒素成分′およびリ
ン成分ケ含む汚水と返送汚泥の混合液を嫌気工程で処理
し、引続いて循環系路を有する脱窒工程と硝化工程とで
処理するに際し、前記蛸化工枚には生物の固定手段を含
１せたことを特似とする汚水を生物学的に脱室、脱リン
する方法である。That is, the present invention provides a method for treating a mixed solution of sewage and returned sludge containing BOI components, nitrogen components' and phosphorus components in an anaerobic process, and subsequently in a denitrification process and a nitrification process having a circulation system path. This is a method for biologically derooming and dephosphorizing wastewater, which is characterized in that the octopus chemical treatment sheet contains means for immobilizing living organisms.
図面は、本発明の一実施ｔＡ様金示す系統図であり、こ
の系統図ｖｉ−基に本発明全説明する。The drawing is a system diagram showing one embodiment of the present invention, and the present invention will be fully explained based on this system diagram VI.
原水に返送汚泥とを混合し、嫌気槽１ｉこおいて一定時
間攪拌されながら滞留させられる、この間、汚泥中の微
生物は呼吸によってはエネルギーを得られないので、体
内に蓄積していたリン化合物（例えば、ポリリン酸のマ
グネシーラム塩）を加水分解することにより、ＢｏＤ成
分を取り込むエネルギーとする。すなわち、この嫌気槽
１では、微生物はＢＯＤ成分を取り込み、代りにリン化
合物の加水分解によって生じたリン（Ｅリン酸）を放出
するのである。このような作用は嫌気槽ｌを溶存酸素や
亜硝酸イオン、硝酸イオンが殆ど存在（−ないような嫌
気状態にすることによって達成される。このため、嫌気
４１［に仕切板を設けて２室以上にし、少くとも後段を
十分な嫌気状態に保つことが好萱しい。The raw water is mixed with the returned sludge and left in an anaerobic tank 1i where it is allowed to stagnate while being stirred for a certain period of time.During this time, the microorganisms in the sludge cannot obtain energy through respiration, so the phosphorus compounds accumulated in the body ( For example, by hydrolyzing magnesia rum salt of polyphosphoric acid, energy is obtained to take in BoD components. That is, in this anaerobic tank 1, microorganisms take in BOD components and instead release phosphorus (E-phosphoric acid) produced by hydrolysis of phosphorus compounds. Such an effect is achieved by bringing the anaerobic tank 1 into an anaerobic state in which dissolved oxygen, nitrite ions, and nitrate ions are almost absent.For this reason, a partition plate is installed in the anaerobic tank 1 to separate the two chambers. It is preferable to keep at least the latter stage in a sufficiently anaerobic state.
嫌気槽ｌからの流出液は硝化槽３の流出混合液の一部と
共に脱窒槽２に受は受れられる。脱窒槽２では混合液は
攪拌状態に保たれ、ここで微生物は、ＢＯＤ成分を有機
炭素源として、硝酸イオン及び亜硝酸イオンケ窒素カス
に還元する。The effluent from the anaerobic tank 1 is received in the denitrification tank 2 along with a part of the mixed liquid effluent from the nitrification tank 3. In the denitrification tank 2, the mixed liquid is kept in an agitated state, and microorganisms use the BOD component as an organic carbon source to reduce it to nitrate ions, nitrite ions, and nitrogen scum.
脱窒槽２からの流出混合液は次の硝化槽３に受は入れら
れる。この硝化ｉａ３には、生物の固定手段としての回
転円板−一が円板の一部を水中に浸漬した状態で設けら
れている。したかって硝化Ｗ１３は、好気性に保たれ、
微生物はアンモニアを硝酸または唾硝敵にするとともに
、呼吸によるエネルギーで正すン酸金取り込み、体す
内にボｌ）Ａン酸の形で貯留する。The mixed liquid discharged from the denitrification tank 2 is received in the next nitrification tank 3. This nitrification ia3 is provided with a rotating disk-1 as a means for fixing living things with a part of the disk immersed in water. Therefore, nitrifying W13 is kept aerobic,
Microorganisms use ammonia as an enemy to nitric acid or salivary nitrate, and use the energy from respiration to take in gold phosphate and store it in the body in the form of borohydric acid.
硝化槽３からの流出混合液の一部は、前述したように脱
窒１ｆｔｋ２に返送されるが、残部は沈殿分離槽４に導
ひかれて、リンを体内に取り込んだ微生物群からなる汚
泥とＢＯＤ、窒素及びリン成分全除去された処理水とに
分離される。なお、汚泥の−Ｓは前述したように嫌気槽
ｌに導ひかれる。A part of the mixed liquid flowing out from the nitrification tank 3 is returned to the denitrification 1ftk2 as described above, but the rest is led to the sedimentation separation tank 4 where it is mixed with sludge and BOD made up of microorganisms that have taken up phosphorus into the body. and treated water from which all nitrogen and phosphorus components have been removed. Note that -S in the sludge is led to the anaerobic tank 1 as described above.
崗示の系統図に示ｆ実施例では、硝化槽３及び沈敏分離
槽４の間に、第２脱室憎５及び再蟻気ｍ６′ｆｒｆｉけ
ている。これは、本発明の必漠の構成要件ではないが、
脱窒処理全完全にするためのものである。すなわち、第
２悦窒槽５にはメタノールを添加混合し、これによって
微生物はメタノールを有機炭素源として硝酸イオン及び
亜硝酸イオン金窒素ガスに環元する。そして、メタノー
ルの過剰分は、再曝気槽ｆ５にで除去されるとともに、
ＩＥＩＪン酸は呼吸によるエネルギーで微生物体内に取
り連動ことにより、より完全な処理金可能とする。In the embodiment shown in the system diagram shown in FIG. 1, a second venting tank 5 and a re-aeration tank 5 are provided between the nitrification tank 3 and the sedimentation tank 4. Although this is not an essential component of the invention,
This is to complete the denitrification process. That is, methanol is added and mixed in the second nitrogen tank 5, whereby the microorganisms convert the methanol into nitrate ions, nitrite ions, and gold nitrogen gas using the methanol as an organic carbon source. Then, the excess methanol is removed in the reaeration tank f5, and
IEIJ's acid absorbs energy from respiration into microorganisms, allowing for more complete processing.
本発明では、前述したように硝化槽３に回転円板製蓋７
からなる生物の固定手段を有している。これは次の理由
による。すなわち、普通の下水のＢＯＬ）線板の１５０
〜／！前後を硝化槽で処理する滞留時間は年間を通じて
８〜１２時間が硝化細閑ゲ良好に維持する条件となって
いる。In the present invention, as described above, the nitrification tank 3 is provided with a lid 7 made of a rotating disk.
It has a biological immobilization means consisting of: This is due to the following reason. That is, 150 of the ordinary sewage BOL) wire plate
~/! The residence time of the front and rear treatments in the nitrification tank is 8 to 12 hours throughout the year, which is a condition to maintain good nitrification and stagnation.
しかしながら、この時間ではＩＥリン敵？ｒ微生物に効
米的に取り込むことができない。なぜならば、例えば上
述したような都市下＊全６時間硝化槽において滞留させ
たときには、リン除去率に３０％前後に過ぎない。この
時間を３〜４時この表からも明らかなように、本発明は
ＢＯＤにもちろん窒素及びリン成分を同時にできる極め
て有用な発明である。However, at this time IE Lin enemy? rIt cannot be effectively incorporated into microorganisms. This is because, for example, when the nitrification tank is allowed to remain in a nitrification tank for a total of 6 hours under urban conditions as described above, the phosphorus removal rate is only around 30%. This time was 3 to 4 hours.As is clear from this table, the present invention is an extremely useful invention that can simultaneously add nitrogen and phosphorus components to BOD.
図面け、本発明の一実施例を示す系統図であって、図中
１ｉｊ嫌気槽、２は脱窒槽、３１ｉ硝化槽、４は沈殿分
離槽及び７Ｆｉ回転円板装置を示す。
％軒出頗人 栗田工業株式会社The drawing is a system diagram showing one embodiment of the present invention, in which 1ij is an anaerobic tank, 2 is a denitrification tank, 31i is a nitrification tank, 4 is a sedimentation separation tank, and 7Fi rotating disk device. %Kurita Kogyo Co., Ltd.
Claims (1)
と返送汚泥の混合液１＆：ｔＲ気工程で処理し、引続い
て循環系路を有する脱窒工程と硝化工程とで処理するに
際し、前記硝化工程には生物の固定手段ケ含ませたこと
を％徴とする汚水を生物学的に脱窒、悦リンする方法。 ２ 生物の固定手段は回転円板装置である特許請求の範
囲第１項記載の汚水を生物学的に脱室、脱リンする方法
。 ３ ＢＵＤ成分、窒素成分およびリン成分を含む汚水
と返送汚泥の混合？＆全嫌気処理する嫌気槽と、嫌気槽
からの流出液と硝化処理水の混合液を脱窒処理する脱窒
槽と、脱鼠槽の処理水ケ硝化処理する生物の固定手段音
素する硝化槽と、硝化槽の処理液の一部を脱窒槽へ循環
させる循環系路と、硝化槽の処理液の残部を固液分離す
る手段及び固液分離する手段からの汚泥分を前記嫌気槽
へ返送する糸路を備えてなる汚水全生物学的に脱窒、悦
リンする装置。 ４ 生物の固定手段は回転円板装置である特許請求の範
囲第３項記載の汚水を生物学的に脱室、脱リンする装置
。[Scope of Claims] l A mixed solution of sewage and returned sludge containing BOD components, nitrogen components and phosphorus components is treated in a 1&:tR air step, and subsequently treated in a denitrification step and a nitrification step having a circulation system path. A method for biologically denitrifying and phosphorizing wastewater, the nitrification process including a biological fixing means. 2. A method for biologically dechambering and dephosphorizing wastewater according to claim 1, wherein the means for immobilizing living organisms is a rotating disk device. 3 Mixing of return sludge and wastewater containing BUD, nitrogen and phosphorus components? & An anaerobic tank for total anaerobic treatment, a denitrification tank for denitrifying the mixture of effluent from the anaerobic tank and nitrified water, and a nitrification tank for fixing the treated water of the nitrifying tank. , a circulation line for circulating a part of the treated liquid in the nitrification tank to the denitrification tank, a means for solid-liquid separation of the remainder of the treated liquid in the nitrification tank, and a means for returning the sludge from the solid-liquid separation means to the anaerobic tank. A system for biologically denitrifying and phosphorizing wastewater, which is equipped with a thread path. 4. A device for biologically dechambering and dephosphorizing wastewater according to claim 3, wherein the means for immobilizing living organisms is a rotating disk device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57077119A JPS58216790A (en) | 1982-05-07 | 1982-05-07 | Method and device for denitrifying and dephosphorizing sewage biologically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57077119A JPS58216790A (en) | 1982-05-07 | 1982-05-07 | Method and device for denitrifying and dephosphorizing sewage biologically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58216790A true JPS58216790A (en) | 1983-12-16 |
| JPS6117558B2 JPS6117558B2 (en) | 1986-05-08 |
Family
ID=13624899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57077119A Granted JPS58216790A (en) | 1982-05-07 | 1982-05-07 | Method and device for denitrifying and dephosphorizing sewage biologically |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58216790A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59145098A (en) * | 1983-02-08 | 1984-08-20 | Hitachi Plant Eng & Constr Co Ltd | Plant for biological denitrification-dephosphorization of waste water |
| JPS6038095A (en) * | 1983-08-08 | 1985-02-27 | Nippon Kokan Kk <Nkk> | Treatment of organic sewage |
| JPS60129194A (en) * | 1983-12-16 | 1985-07-10 | Kurita Water Ind Ltd | Treatment of sewage |
| JPS60166098A (en) * | 1984-02-09 | 1985-08-29 | Hitachi Plant Eng & Constr Co Ltd | Microbiological denitrifying and dephosphorizing method of waste water |
| WO1987004695A1 (en) * | 1986-02-10 | 1987-08-13 | Onoda Autoclaved Light Weight Concrete Co., Ltd. | Process for treating waste water |
| US5284716A (en) * | 1989-01-19 | 1994-02-08 | Konica Corporation | Magnetic recording medium |
| KR20010104820A (en) * | 2000-05-16 | 2001-11-28 | 제성호 | method for sewage disposal and arrangement therefor |
| KR20010105549A (en) * | 2000-05-16 | 2001-11-29 | 제성호 | method for sewage disposal and arrangement therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS537976A (en) * | 1976-05-12 | 1978-01-24 | Autotrol Corp | Method and apparatus for treating waste water |
| JPS5642997A (en) * | 1979-09-17 | 1981-04-21 | Ricoh Kk | Flash fixing power source |
| JPS56150493A (en) * | 1980-04-22 | 1981-11-20 | Ebara Infilco Co Ltd | Disposal of organic waste water |
-
1982
- 1982-05-07 JP JP57077119A patent/JPS58216790A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS537976A (en) * | 1976-05-12 | 1978-01-24 | Autotrol Corp | Method and apparatus for treating waste water |
| JPS5642997A (en) * | 1979-09-17 | 1981-04-21 | Ricoh Kk | Flash fixing power source |
| JPS56150493A (en) * | 1980-04-22 | 1981-11-20 | Ebara Infilco Co Ltd | Disposal of organic waste water |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59145098A (en) * | 1983-02-08 | 1984-08-20 | Hitachi Plant Eng & Constr Co Ltd | Plant for biological denitrification-dephosphorization of waste water |
| JPS6038095A (en) * | 1983-08-08 | 1985-02-27 | Nippon Kokan Kk <Nkk> | Treatment of organic sewage |
| JPS60129194A (en) * | 1983-12-16 | 1985-07-10 | Kurita Water Ind Ltd | Treatment of sewage |
| JPS60166098A (en) * | 1984-02-09 | 1985-08-29 | Hitachi Plant Eng & Constr Co Ltd | Microbiological denitrifying and dephosphorizing method of waste water |
| JPS6324440B2 (en) * | 1984-02-09 | 1988-05-20 | Hitachi Plant Eng & Constr Co | |
| WO1987004695A1 (en) * | 1986-02-10 | 1987-08-13 | Onoda Autoclaved Light Weight Concrete Co., Ltd. | Process for treating waste water |
| GB2196955A (en) * | 1986-02-10 | 1988-05-11 | Onoda Alc Kk | Process for treating waste water |
| AU595013B2 (en) * | 1986-02-10 | 1990-03-22 | Onoda Autoclaved Light Weight Concrete Co., Ltd. | Method for treating waste water |
| GB2196955B (en) * | 1986-02-10 | 1990-10-17 | Onoda Alc Kk | Method for treating waste water. |
| US5284716A (en) * | 1989-01-19 | 1994-02-08 | Konica Corporation | Magnetic recording medium |
| KR20010104820A (en) * | 2000-05-16 | 2001-11-28 | 제성호 | method for sewage disposal and arrangement therefor |
| KR20010105549A (en) * | 2000-05-16 | 2001-11-29 | 제성호 | method for sewage disposal and arrangement therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6117558B2 (en) | 1986-05-08 |
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