JPH02135196A - Sewage and waste water treating device - Google Patents
Sewage and waste water treating deviceInfo
- Publication number
- JPH02135196A JPH02135196A JP63290534A JP29053488A JPH02135196A JP H02135196 A JPH02135196 A JP H02135196A JP 63290534 A JP63290534 A JP 63290534A JP 29053488 A JP29053488 A JP 29053488A JP H02135196 A JPH02135196 A JP H02135196A
- Authority
- JP
- Japan
- Prior art keywords
- channel
- waste water
- passage
- aeration tank
- sewage
- 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
- 239000002351 wastewater Substances 0.000 title claims abstract description 30
- 239000010865 sewage Substances 0.000 title claims abstract description 18
- 238000005273 aeration Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 238000000926 separation method Methods 0.000 claims description 12
- 244000005700 microbiome Species 0.000 claims description 9
- 230000001174 ascending effect Effects 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 230000003100 immobilizing effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment 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)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、下廃水処理装置に関する。[Detailed description of the invention] Industrial applications TECHNICAL FIELD The present invention relates to sewage water treatment equipment.
従来の技術
従来の超深層曝気装置は第２図に示すようなものであり
、水深が５０〜１５０ｍの下降流路１と上昇流路２とを
設け、下廃水３が流入する上昇流路２の上端開口２ａ付
近の水面下に循環流路４の取水口４ａを配置するととも
に、下降流路１の上端開口１ａに循環流路４の噴出口４
ｂを位置させている。2. Description of the Related Art A conventional ultra-deep aeration system is as shown in FIG. 2, and is provided with a descending channel 1 and an ascending channel 2 having a water depth of 50 to 150 m. The water intake port 4a of the circulation channel 4 is arranged below the water surface near the upper end opening 2a, and the water outlet 4 of the circulation channel 4 is arranged at the upper end opening 1a of the descending channel 1.
b is located.
また、下降流路１は上昇流路２の底部２ｂで開口し、循
環流路４には循環ポンプ５が介装されている。Further, the descending passage 1 opens at the bottom 2b of the ascending passage 2, and the circulation passage 4 is provided with a circulation pump 5.
さらに、循環流路４の途中には給気装置６が連通してい
る。そして、上昇流路２に流入した下廃水３を循環ポン
プ５により、循環流路４の途中に供給される空気ととも
に下降流路１に圧送し、下降流路１の深度に応じて加え
られる水圧と、気液二相垂直流による乱流とによって空
気中の酸素を下廃水３に溶解させ、下廃水３の溶存酸素
量を高めている。Further, an air supply device 6 is communicated with the circulation channel 4 midway. The sewage water 3 that has flowed into the ascending channel 2 is pumped by the circulation pump 5 to the descending channel 1 along with the air supplied midway through the circulating channel 4, and water pressure is applied depending on the depth of the descending channel 1. The oxygen in the air is dissolved in the waste water 3 by the turbulent flow caused by the gas-liquid two-phase vertical flow, and the amount of dissolved oxygen in the waste water 3 is increased.
また、下廃水３を処理する方法として固定化微生物法が
ある。これは、高分子材料（ポリビニルアルコール、ア
クリルアミド、光硬化性樹脂など）を用いて、微生物を
包括固定化するか、あるいは多孔性の無機担体表面に微
生物を吸着、結合固定化することにより、反応槽内の微
生物濃度を高く維持して、処理時間の短縮や窒素、難分
解性物質などの除去を図る方法である。Further, as a method for treating the sewage water 3, there is an immobilized microorganism method. This reaction is achieved by entrapping and immobilizing microorganisms using a polymeric material (polyvinyl alcohol, acrylamide, photocurable resin, etc.), or by adsorbing and bonding microorganisms onto the surface of a porous inorganic carrier. This method maintains a high concentration of microorganisms in the tank to shorten processing time and remove nitrogen and difficult-to-decompose substances.
発明が解決しようとする課題
しかし、上記した構成によれば、下廃水３は、循環ポン
プ５を通ることによって強いせん断力を受けるので、使
用できる活性汚泥が浮遊式のものに限られる問題があっ
た。一方、固定化微生物法においては高微生物濃度であ
るために、酸素消費量が多くなることから、いかにして
下廃水３中の溶存酸素量を高めるかが問題であった。Problems to be Solved by the Invention However, according to the above-described configuration, the sewage water 3 is subjected to strong shear force by passing through the circulation pump 5, so there is a problem that the activated sludge that can be used is limited to floating type. Ta. On the other hand, in the immobilized microorganism method, since the concentration of microorganisms is high and the amount of oxygen consumed increases, the problem was how to increase the amount of dissolved oxygen in the wastewater 3.
本発明は、上記課題を解決するもので、固定化微生物法
を超深層曝気装置に適用した下廃水処理装置を提供する
ことを目的とする。The present invention solves the above problems, and aims to provide a wastewater treatment device in which an immobilized microorganism method is applied to an ultra-deep aeration device.
課題を解決するための手段
上記課題を解決するために、本発明は、所定深さを有し
、内部に下廃水とこの下廃水を浄化する微生物を固定化
した固定化担体を貯留する曝気槽と、この曝気槽内に上
下方向に形成され、上端開口が曝気槽の開口付近の水面
下に位置するとともに下端開口が曝気槽の底部付近に位
置する下降流路と、前記曝気槽内で前記下降流路の周囲
に形成された上昇流路の上端側に連通ずるとともに下廃
水流入路および処理水流出路に連通し、前記固定化担体
の流入を阻止する固定化担体分離槽と、固定化担体分離
槽内に一端が開口するとともに他端が下降流路の上端開
口内に開口し、途中に循環ポンプを介装された循環流路
と、この循環流路の途中に連通ずる給気装置とを備えた
構成としたものである。Means for Solving the Problems In order to solve the above problems, the present invention provides an aeration tank that has a predetermined depth and stores sewage wastewater and an immobilized carrier on which microorganisms for purifying this sewage wastewater are immobilized. and a downward passage formed in the aeration tank in the vertical direction, the upper end opening of which is located below the water surface near the opening of the aeration tank, and the lower end opening of which is located near the bottom of the aeration tank; an immobilized carrier separation tank that communicates with the upper end side of the ascending channel formed around the descending channel and also communicates with the sewage water inflow channel and the treated water outflow channel, and prevents the immobilized carrier from flowing in; A circulation flow path having one end opened in the separation tank and the other end opened in the upper end opening of the descending flow path, with a circulation pump interposed in the middle, and an air supply device communicating with the circulation flow path midway. The configuration is equipped with the following.
作用
上記した構成によれば、下廃水流入路より固定化担体分
離槽に流入した下廃水は、循環ポンプによって循環流路
を通り下降流路に圧送される。このとき、循環流路の途
中において給気装置から供給される空気が下廃水中に混
気される。そして、下廃水および空気は気液二相垂直流
となって循環流路から下降流路内に噴出し、下降流路内
を降下する。このために、下降流路内に下方に向かう流
れが生じ、曝気槽内に貯留された下廃水および固定化担
体が下降流路の上端開口から下降流路内に吸い込まれる
。そして、下降流路内において、空気が深度に応じた水
圧をうけて下廃水中に溶は込み、下廃水中の溶存酸素濃
度が高められるとともに、固定化担体によって下廃水が
浄化される。また、固定化担体は下降流路の下端開口か
ら上昇流路内に流入し、循環流路を通らずに再び上端開
口から下降流路内に流入して曝気槽内で循環する。Function According to the above-described configuration, the waste water that has flowed into the immobilized carrier separation tank from the waste water inflow path is forced to be sent to the descending flow path through the circulation flow path by the circulation pump. At this time, the air supplied from the air supply device in the middle of the circulation flow path is aerated into the wastewater. Then, the waste water and air become a gas-liquid two-phase vertical flow, are ejected from the circulation channel into the descending channel, and descend within the descending channel. For this reason, a downward flow is generated in the downflow channel, and the wastewater and immobilized carriers stored in the aeration tank are sucked into the downflow channel from the upper end opening of the downflow channel. Then, in the downward flow path, the air is dissolved into the wastewater under water pressure depending on the depth, and the dissolved oxygen concentration in the wastewater is increased, and the wastewater is purified by the immobilized carrier. Further, the immobilized carrier flows into the ascending channel from the lower end opening of the descending channel, flows back into the descending channel from the upper end opening without passing through the circulation channel, and circulates in the aeration tank.
このことによって、固定化担体が循環ポンプのせん断を
受けて破壊されることが防止される。This prevents the immobilization carrier from being destroyed by shearing from the circulation pump.
実施例
以下本発明の一実施例を図面に基づいて説明する。第１
図において、曝気槽１１は所定深さを有しており、この
曝気槽ｌｌ内には上下方向に配置した菅１２によって下
降流路１３が形成されている。また、菅１２の上端開口
１４は曝気槽１１の水面下に没しており、下端開口１５
は曝気槽１１の底部近傍に位置している。そして、曝気
槽１１の内部で菅１２の周囲には上昇流路１６が形成さ
れており、この上昇流路１６に連通して固定化担体分離
槽１７が曝気槽１１の上部に形成されている。この固定
化担体分離槽１７は下廃水１８の流入を許容するととも
に固定化担体１８の流入を阻止するように形成されてい
る。そして、固定化担体分離槽１７には、循環流路２０
の一端が開口しており、この循環流路２０の他端は下降
流路１３の上端開口１４の内部で開口している。また、
循環流路２０の途中には循環ポンプ２１が介装されてお
り、さらに循環流路２０途中には給気装置２２が連通し
ている。そして、曝気槽１１には下廃水流入路２３と処
理水流出路２４が連通している。EXAMPLE An example of the present invention will be described below based on the drawings. 1st
In the figure, the aeration tank 11 has a predetermined depth, and a descending channel 13 is formed in the aeration tank 11 by pipes 12 arranged in the vertical direction. Further, the upper end opening 14 of the tube 12 is submerged below the water surface of the aeration tank 11, and the lower end opening 15
is located near the bottom of the aeration tank 11. An ascending channel 16 is formed around the tube 12 inside the aeration tank 11, and an immobilized carrier separation tank 17 is formed in the upper part of the aeration tank 11 in communication with this ascending channel 16. . The immobilized carrier separation tank 17 is formed to allow the inflow of the waste water 18 and to prevent the inflow of the immobilized carrier 18. The immobilized carrier separation tank 17 includes a circulation channel 20.
One end of the circulation flow path 20 is open, and the other end of the circulation flow path 20 is opened inside the upper end opening 14 of the descending flow path 13 . Also,
A circulation pump 21 is interposed in the middle of the circulation flow path 20, and an air supply device 22 is further connected to the middle of the circulation flow path 20. The aeration tank 11 is connected to a sewage water inflow path 23 and a treated water outflow path 24 .
以下、上記構成における作用について説明する。Hereinafter, the effects of the above configuration will be explained.
曝気槽１１の内部に下廃水１８と固定化担体１９が貯留
された状態において、固定化担体分離槽１７の内部に流
入する下廃水１８は循環流路２０を通り、循環ポンプ２
１によって下降流路１３に圧送される。このとき循環流
路２０の途中において給気装置２２から供給される空気
が下廃水１８中に混気される。そして下廃水１８、およ
び空気は気液二相垂直流となって下降流路１３の内部を
降下し、下降流路１３の上端開口１４から曝気槽ｌｌ内
の下廃水１８および固定化担体１３が下降流路１３に吸
い込まれる。そして下降流路１３内の深度に応じて加え
られる水圧によって空気が下廃水１８中に溶解し、下廃
水１８中の溶存酸素量が高められ、固定化担体１９によ
る浄化が行われる。In a state where the wastewater 18 and the immobilized carrier 19 are stored inside the aeration tank 11, the wastewater 18 flowing into the immobilized carrier separation tank 17 passes through the circulation flow path 20 and is sent to the circulation pump 2.
1 into the downward flow path 13. At this time, air supplied from the air supply device 22 in the middle of the circulation channel 20 is mixed into the waste water 18 . Then, the lower wastewater 18 and the air become a gas-liquid two-phase vertical flow and descend inside the downward flow path 13, and the lower wastewater 18 and the immobilized carrier 13 in the aeration tank 11 are discharged from the upper end opening 14 of the downward flow path 13. It is sucked into the downward flow path 13. Then, air is dissolved in the lower waste water 18 by the water pressure applied according to the depth within the descending channel 13, the amount of dissolved oxygen in the lower waste water 18 is increased, and purification by the immobilization carrier 19 is performed.
そして、下廃水１８は、一部が処理水として処理水流出
路２４から曝気槽１１の外部に排出され、残りは固定化
担体分離槽１７に流入し、再び循環流路２０を通って下
降流路１３に流入する。また。固定化担体１９は固定化
担体分離槽１７に流入することなく上端開口１４から下
降流路１３の内部に流入する。したがって、固定化担体
１９は循環ポンプによるせん断力を受けることなく曝気
槽１１の内部を循環し、破壊されることがない。A part of the sewage water 18 is discharged as treated water to the outside of the aeration tank 11 from the treated water outflow path 24, and the rest flows into the immobilized carrier separation tank 17, passes through the circulation flow path 20 again, and passes through the downward flow path. 13. Also. The immobilized carrier 19 does not flow into the immobilized carrier separation tank 17 but flows into the downward flow path 13 from the upper end opening 14 . Therefore, the immobilized carrier 19 circulates inside the aeration tank 11 without being subjected to shearing force by the circulation pump, and is not destroyed.
発明の効果
以上述べたように、本発明によれば、固定化担体が循環
流路を通らずに曝気槽内で循環するので固定化担体を破
壊することなく下廃水の溶存酸素量を高めて下廃水の浄
化を行うことが出来る。Effects of the Invention As described above, according to the present invention, the immobilized carrier is circulated in the aeration tank without passing through the circulation channel, so the amount of dissolved oxygen in sewage water can be increased without destroying the immobilized carrier. It is possible to purify sewage water.
２図は、従来の超深層曝気装置を示す全体構成図である
。FIG. 2 is an overall configuration diagram showing a conventional ultra-deep aeration device.
１１・・・曝気槽、１３・・・下降流路、１６・・・上
昇流路、１７・・・固定化担体分離槽、１８・・・下廃
水、１９・・・固定化担体、２１・・・循環ポンプ。DESCRIPTION OF SYMBOLS 11... Aeration tank, 13... Downflow path, 16... Upflow path, 17... Immobilized carrier separation tank, 18... Sewage water, 19... Immobilized carrier, 21. ...Circulation pump.
代理人 森 本 義 弘第１図 上昇ニル路 固；ｉ：、イｔ−ノ（≦１冬５う・１匣１と１漕王廃水 固定化Ｉ引ネ ジｈ ＋３ 、丁？〉）Ｑ ！Agent Mori Hon Yoshihiro Figure 1 rising nil road solid; Immobilized I pull Jih +3, Ding? 〉)Q !
Claims (1)
する微生物を固定化した固定化担体を貯留する曝気槽と
、この曝気槽内に上下方向に形成され、上端開口が曝気
槽の開口付近の水面下に位置するとともに下端開口が曝
気槽の底部付近に位置する下降流路と、前記曝気槽内で
前記下降流路の周囲に形成された上昇流路の上端側に連
通するとともに下廃水流入路および処理水流出路に連通
し、前記固定化担体の流入を阻止する固定化担体分離槽
と、固定化担体分離槽内に一端が開口するとともに他端
が下降流路の上端開口内に開口し、途中に循環ポンプを
介装された循環流路と、この循環流路の途中に連通する
給気装置とを備えたことを特徴とする下廃水処理装置。1. An aeration tank that has a predetermined depth and stores sewage wastewater and an immobilized carrier on which microorganisms that purify this sewage water are immobilized, and an aeration tank that is formed vertically in this aeration tank, with an opening at the top for aeration. A descending channel located below the water surface near the opening of the tank and having a lower end opening located near the bottom of the aeration tank communicates with an upper end side of an ascending channel formed around the descending channel in the aeration tank. and an immobilized carrier separation tank that communicates with the sewage water inflow channel and the treated water outflow channel and prevents the inflow of the immobilized carrier, and one end of which opens into the immobilized carrier separation tank and the other end of which is the upper end of the descending channel. A sewage water treatment device comprising: a circulation channel that opens into an opening and has a circulation pump interposed therebetween; and an air supply device that communicates with the circulation channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63290534A JPH02135196A (en) | 1988-11-16 | 1988-11-16 | Sewage and waste water treating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63290534A JPH02135196A (en) | 1988-11-16 | 1988-11-16 | Sewage and waste water treating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02135196A true JPH02135196A (en) | 1990-05-24 |
Family
ID=17757270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63290534A Pending JPH02135196A (en) | 1988-11-16 | 1988-11-16 | Sewage and waste water treating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02135196A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0475540A1 (en) * | 1990-08-24 | 1992-03-18 | Preussag Noell Wassertechnik GmbH | Process and apparatus for removing ammonium, nitrite and/or nitrate from water |
| JPH0515894A (en) * | 1991-05-09 | 1993-01-26 | Inax Corp | Deep aeration tank |
| JPH0515893A (en) * | 1991-05-09 | 1993-01-26 | Inax Corp | Vertical type aeration tank |
-
1988
- 1988-11-16 JP JP63290534A patent/JPH02135196A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0475540A1 (en) * | 1990-08-24 | 1992-03-18 | Preussag Noell Wassertechnik GmbH | Process and apparatus for removing ammonium, nitrite and/or nitrate from water |
| JPH0515894A (en) * | 1991-05-09 | 1993-01-26 | Inax Corp | Deep aeration tank |
| JPH0515893A (en) * | 1991-05-09 | 1993-01-26 | Inax Corp | Vertical type aeration tank |
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