JPS6150677B2 - - Google Patents
Info
- Publication number
- JPS6150677B2 JPS6150677B2 JP52134303A JP13430377A JPS6150677B2 JP S6150677 B2 JPS6150677 B2 JP S6150677B2 JP 52134303 A JP52134303 A JP 52134303A JP 13430377 A JP13430377 A JP 13430377A JP S6150677 B2 JPS6150677 B2 JP S6150677B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- tank
- aerobic bacteria
- flow rate
- pipe
- 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
- 239000010802 sludge Substances 0.000 claims description 44
- 241001148470 aerobic bacillus Species 0.000 claims description 20
- 239000010865 sewage Substances 0.000 claims description 18
- 238000005273 aeration Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000029087 digestion Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- 235000015097 nutrients Nutrition 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 231100000719 pollutant Toxicity 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000002351 wastewater Substances 0.000 description 5
- 230000005484 gravity Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000002699 waste material 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
- Activated Sludge Processes (AREA)
- Treatment Of Sludge (AREA)
Description
【発明の詳細な説明】
従来の有機性汚水の浄化方法は、曝気槽におい
て、好気性菌の作用により汚染物質を酸化分解し
た後、沈澱槽において、上澄水と、増殖した好気
性菌の集団、すなわち汚泥とに重力分離し、上澄
水を外部へ放流するとともに、汚泥は、一部を好
気性菌の育生栄養源として曝気槽に返送し、残部
を汚泥貯留槽へ一旦貯留した後、産業廃棄物とし
て処分していた。[Detailed Description of the Invention] In the conventional organic wastewater purification method, pollutants are oxidized and decomposed by the action of aerobic bacteria in an aeration tank, and then supernatant water and a population of grown aerobic bacteria are collected in a settling tank. In other words, the sludge is separated by gravity into sludge, and the supernatant water is discharged outside. A portion of the sludge is returned to the aeration tank as a nutrient source for aerobic bacteria, and the remainder is temporarily stored in the sludge storage tank before being used for industrial purposes. It was disposed of as waste.
本発明は、別に設けた汚泥消化槽において、余
剰汚泥に空気を供給して、好気性菌の活性を保ち
つつ汚泥を消化させた後、貯留槽に移送し、貯留
槽にも空気を供給して、好気性菌の活性を保ちつ
つ汚泥を貯留し、曝気槽に流入する汚水中の有機
性物質の濃度が著しく低下した時に、この余剰汚
泥を供給して、曝気槽における好気性菌の少を補
い、かつ好気性菌の育生栄養源とし、汚水の剰化
を常に良好に保たせ、最終的には、従来廃棄処分
していた余剰汚泥を、汚水浄化装置内において消
化して、外部に排出しないようにした有機性汚水
の浄化方法に関するもので、以下添付の図面に基
いて具体的に説明する。 The present invention supplies air to surplus sludge in a separately provided sludge digestion tank to digest the sludge while maintaining the activity of aerobic bacteria, and then transfers it to a storage tank and supplies air to the storage tank as well. The sludge is stored while maintaining the activity of aerobic bacteria, and when the concentration of organic substances in the sewage flowing into the aeration tank has decreased significantly, this surplus sludge is supplied to reduce the number of aerobic bacteria in the aeration tank. It also serves as a nurturing source for aerobic bacteria, and keeps the surplus of sewage at a good level at all times.Finally, the surplus sludge, which was previously disposed of, is digested in the sewage purification equipment and released to the outside. This invention relates to a method for purifying organic wastewater that is not discharged, and will be specifically explained below based on the attached drawings.
図示を省略した前処理装置により油と塵芥の除
去された汚水は、流入管１を経て流量調整槽２に
流入する。 Sewage from which oil and dust have been removed by a pretreatment device (not shown) flows into a flow rate adjustment tank 2 through an inflow pipe 1.
流量調整槽２の底部には、多数の噴気孔３……
が穿設された噴気管４が配設され、噴気管４は、
流量調整槽２上に設置された第１ブロアー５に接
続されている。 At the bottom of the flow rate adjustment tank 2, there are many fumaroles 3...
A fumarole pipe 4 is provided, and the fumarole pipe 4 has a
It is connected to a first blower 5 installed on the flow rate adjustment tank 2 .
流量調整槽２に一時貯留された汚水中の好気性
菌は、噴気孔３……より噴出する空気により、有
機性汚染物質を酸化分解しながら増殖する。 Aerobic bacteria in the wastewater temporarily stored in the flow rate adjustment tank 2 multiply while oxidizing and decomposing organic pollutants by the air blown out from the fumaroles 3.
上記汚水は、流量調整槽２上に配置された汚水
ポンプ６により、流量調整装置７と汚水管８を経
て、次段の曝気槽９の中央に設置された内筒１０
に流入する。 The above-mentioned sewage is passed through a flow rate adjustment device 7 and a sewage pipe 8 by a sewage pump 6 placed on the flow rate adjustment tank 2, and then passed through an inner cylinder 10 installed in the center of the next stage aeration tank 9.
flows into.
内筒１０の下端は、曝気槽９の底面により若干
上方において下向ラツパ状に拡張し、同じく上端
は、ほぼ汚水面においてラツパ状に上向拡張して
いる。 The lower end of the inner cylinder 10 expands downward in a truss-like manner slightly above the bottom surface of the aeration tank 9, and the upper end similarly expands upward in a truss-like manner approximately at the dirty water surface.
内筒１０の上端拡張部１１の若干上方には、下
向円錐状をなすともに、拡張部１１と同軸をな
し、かつ下面に適宜の突条１２……が固設された
撤布板１３が、曝気槽９の上面中央に設置された
モーター１４の軸に装着吊支されている。 Slightly above the upper end expanded portion 11 of the inner cylinder 10, there is a removal plate 13 which has a downward conical shape, is coaxial with the expanded portion 11, and has appropriate protrusions 12 fixed on its lower surface. , is attached and suspended from the shaft of a motor 14 installed at the center of the upper surface of the aeration tank 9.
この撤布板１３の回転により、内筒１０上部の
汚水は、斜上外方に激しく飛散させられ、広い面
積において空気と接触すると同時に、内筒１０の
下端より汚水を吸入するので、曝気槽９内の汚水
は、矢示するように循環する。 By this rotation of the removal plate 13, the sewage in the upper part of the inner cylinder 10 is violently scattered diagonally upward and outward, and at the same time it comes into contact with air over a wide area, and at the same time sucks the sewage from the lower end of the inner cylinder 10. The wastewater inside 9 circulates as shown by the arrow.
このようにして、汚水は、曝気槽９において十
分に曝気されて、空気と好気性菌により酸化分解
して浄化され、増殖した好気性菌は汚泥となり、
濁水管１５を経て、次段の沈澱槽１６の上部の整
流筒１７に流入する。 In this way, the sewage is sufficiently aerated in the aeration tank 9, oxidized and decomposed by air and aerobic bacteria, and purified, and the aerobic bacteria that proliferate become sludge.
The turbid water passes through the turbid water pipe 15 and flows into the rectifier cylinder 17 at the upper part of the sedimentation tank 16 at the next stage.
整流筒１７に流入した濁水が緩速で下降する間
に、汚泥は重力分離されて、沈澱槽１６の底部に
沈降する。 While the turbid water flowing into the straightening tube 17 descends slowly, the sludge is separated by gravity and settles to the bottom of the settling tank 16.
沈降した汚泥は、沈澱槽１６の底面上に設置さ
れ、沈澱槽１６上のモーター１８により緩速で回
転させられる、湾曲した集泥翼１９により、底部
中央に掻き集められる。 The settled sludge is collected at the center of the bottom by curved sludge collecting blades 19 installed on the bottom surface of the settling tank 16 and rotated at a slow speed by a motor 18 on the settling tank 16.
汚泥の除かれた上澄水は、整流筒１７の外側面
上部に設けられた排水樋２０より、、送水管２１
を経て、次段の消毒槽２２に流入して殺菌され、
排水管２３より放流される。 The supernatant water from which sludge has been removed is passed from a drainage gutter 20 provided at the upper part of the outer surface of the straightening tube 17 to a water supply pipe 21.
After that, it flows into the next stage disinfection tank 22 and is sterilized.
It is discharged from the drain pipe 23.
沈澱槽１６に沈降した汚泥は、底部中央に接続
された第１送泥ポンプ２４により、第１送泥管２
５を経て、その一部は、好気性菌の補充と育生用
の栄養源として、上記曝気槽９の内筒１０に返送
され、残部は、次記する汚泥消化槽２６に送られ
る。 The sludge settled in the sedimentation tank 16 is transferred to the first sludge pipe 2 by the first sludge pump 24 connected to the center of the bottom.
5, a part of it is returned to the inner cylinder 10 of the aeration tank 9 as a nutrient source for replenishing and growing aerobic bacteria, and the remaining part is sent to the sludge digestion tank 26 described below.
消化槽２６の底部には、多数の噴気孔２７……
が穿設された噴気管２８が配設され、噴気管２８
は、消化槽２６上に設置された第２ブロアー２９
に接続されている。 At the bottom of the digestion tank 26, there are many fumaroles 27...
A fumarole pipe 28 is provided, and the fumarole pipe 28 is
is the second blower 29 installed on the digestion tank 26
It is connected to the.
消化槽２６内の汚泥中の好気性菌は、噴気孔２
７……より噴出する空気より、汚泥を栄養源とし
て消化しつつ、活性が保たれる。 Aerobic bacteria in the sludge in the digestion tank 26 are
7... The activity is maintained while the sludge is digested as a nutrient source by the air that blows out.
この活性汚泥は、第２送泥管３０により次段の
汚泥貯留３１に送られる。 This activated sludge is sent to the next stage sludge storage 31 through the second sludge pipe 30.
貯留槽３１の底部には、多数の噴気孔３２……
が穿設された噴気管３３が配設され、噴気管３３
は、貯留槽３１上に設置された第３ブロアー３４
に接続されている。 At the bottom of the storage tank 31, a large number of fumaroles 32...
A fumarole pipe 33 in which a fumarole pipe 33 is bored is arranged.
is the third blower 34 installed on the storage tank 31
It is connected to the.
貯留槽３１内の汚泥は、好気性菌が噴気孔３２
……より噴出する空気により、汚泥を栄養源とし
て消化しつつ活性が保たれた状態で、貯留槽３１
内に貯留される。 The sludge in the storage tank 31 is absorbed by aerobic bacteria into the fumarole 32.
...The air that blows out from the storage tank 31 allows the sludge to be digested as a nutrient source while maintaining its activity.
stored within.
この活性汚泥は、上述の汚水浄化装置に流入す
る汚水中の有機性物質が著しく減少して、曝気槽
９内の好気性菌と育生栄養源が不足する場合に、
随時、貯留槽３１上に配置された第２送泥ポンプ
５により、第３送泥管３６を経て、流量調整槽２
に返送される。 This activated sludge is used when organic substances in the sewage flowing into the above-mentioned sewage purification device are significantly reduced and aerobic bacteria and growth nutrients in the aeration tank 9 are insufficient.
From time to time, the second mud pump 5 disposed on the storage tank 31 sends mud to the flow rate adjustment tank 2 through the third mud pipe 36.
will be returned to.
本発明の方法は、上述のようにして、沈澱槽１
６より排出される余剰汚泥を、消化槽２６におい
て好気性菌の活性を保ちつつ消化するとともに、
貯留槽３１内に好気性菌の活性を保ちつつ貯留
し、必要に応じて再利用するので、流入汚水の組
成が著しく変動しても曝気槽９内の好気性菌と育
生栄養源の量は適正に保たれ、常時良好に汚水を
浄化しうるのみならず、余剰汚泥は、循環使用す
る過程において次第に消化されるので、汚泥を外
部に排出することなく処分することができるとい
う利点がある。 In the method of the present invention, as described above, the settling tank 1
Excess sludge discharged from 6 is digested in the digestion tank 26 while maintaining the activity of aerobic bacteria,
Since aerobic bacteria are stored in the storage tank 31 while maintaining their activity and reused as necessary, the amount of aerobic bacteria and growth nutrients in the aeration tank 9 can be maintained even if the composition of inflowing wastewater changes significantly. Not only can it be kept properly and always purify sewage well, but surplus sludge is gradually digested during the process of circulation and use, so it has the advantage of being able to be disposed of without being discharged to the outside.
図面は、本発明の方法を実施する装置の一例を
示す概略図である。
１……流入管、２……流量調整槽、３……噴気
孔、４……噴気管、５……ブロアー、６……汚水
ポンプ、７……流量調整装置、８……汚水管、９
……曝気槽、１０……内筒、１１……拡張部、１
２……突条、１３……撤布板、１４……モータ
ー、１５……濁水管、１６……沈澱槽、１７……
整流筒、１８……モーター、１９……集泥翼、２
０……排水樋、２１……排水管、２２……消毒
槽、２３……排水管、２４……送泥ポンプ、２５
……送泥管、２６……消化槽、２７……噴気孔、
２８……噴気管、２９……ブロアー、３０……送
泥管、３１……貯留槽、３２……噴気孔、３３…
…噴気管、３４……ブロアー、３５……送泥ポン
プ、３６……送泥管。
The drawing is a schematic diagram showing an example of an apparatus for carrying out the method of the invention. 1... Inflow pipe, 2... Flow rate adjustment tank, 3... Fumarole, 4... Fumarole pipe, 5... Blower, 6... Sewage pump, 7... Flow rate adjustment device, 8... Sewage pipe, 9
... Aeration tank, 10 ... Inner cylinder, 11 ... Expansion section, 1
2... Projection, 13... Removal plate, 14... Motor, 15... Turbid water pipe, 16... Sedimentation tank, 17...
Straightening tube, 18...Motor, 19...Sludge collecting blade, 2
0... Drain gutter, 21... Drain pipe, 22... Disinfection tank, 23... Drain pipe, 24... Sludge pump, 25
...sludge pipe, 26...digestion tank, 27...fumarole,
28... fumarole pipe, 29... blower, 30... mud feeding pipe, 31... storage tank, 32... fumarole, 33...
... Fumarole pipe, 34...Blower, 35...Sludge pump, 36...Sludge pipe.
Claims (1)
を調整した後、次段の曝気槽に導いて曝気し、好
気性菌の作用により、汚染物質を酸化分解して生
成した汚泥を、次段の沈澱槽において沈降させ
て、上澄水のみを殺菌して放流し、沈降汚泥の一
部を曝気槽に返送するとともに、沈降汚泥の残部
を汚泥消化槽に移送し、十分に空気と接触させ
て、汚泥を好気性菌の栄養源として消化させつ
つ、活性を保たせた後、次段の汚泥貯留槽に移送
して、さらに、空気と接触させることにより、活
性を保たせ、流入する汚水中に好気性菌の育生栄
養源が不足した場合に、貯留槽内の活性汚泥を、
上記流量調整槽に返送して、汚水の浄化を常時良
好に保たせるとともに、余剰汚泥を外部に排出す
ることなく、消化させることを特徴とする有機性
汚水浄化方法。1 After first storing organic sewage in a flow rate adjustment tank and adjusting the flow rate, it is led to the next stage aeration tank and aerated, and the sludge produced by oxidizing and decomposing pollutants through the action of aerobic bacteria is transferred to the next stage. The sludge is allowed to settle in the sedimentation tank, and only the supernatant water is sterilized and discharged. A part of the settled sludge is returned to the aeration tank, and the remaining part of the settled sludge is transferred to the sludge digestion tank, where it is brought into sufficient contact with air. The sludge is digested as a nutrient source for aerobic bacteria while maintaining its activity, and then transferred to the next stage sludge storage tank, where it is further brought into contact with air to maintain its activity and absorb the inflowing sewage. If there is a lack of nutrients for aerobic bacteria in the tank, the activated sludge in the storage tank can be
An organic sewage purification method characterized in that the sludge is returned to the flow rate regulating tank to maintain good purification at all times, and that excess sludge is digested without being discharged to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13430377A JPS5468055A (en) | 1977-11-09 | 1977-11-09 | Method of purifying organic sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13430377A JPS5468055A (en) | 1977-11-09 | 1977-11-09 | Method of purifying organic sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5468055A JPS5468055A (en) | 1979-05-31 |
| JPS6150677B2 true JPS6150677B2 (en) | 1986-11-05 |
Family
ID=15125124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13430377A Granted JPS5468055A (en) | 1977-11-09 | 1977-11-09 | Method of purifying organic sewage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5468055A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60220190A (en) * | 1984-04-18 | 1985-11-02 | Shimizu Constr Co Ltd | Treatment of waste water |
| JP5110250B2 (en) * | 2006-02-06 | 2012-12-26 | Ｎｏｋ株式会社 | Oil seal |
| JP5170365B2 (en) | 2007-02-16 | 2013-03-27 | Ｎｏｋ株式会社 | Sealing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3591491A (en) * | 1968-10-04 | 1971-07-06 | Edmund G Smith | Method for the treatment of aqueous wastes |
| JPS5112312U (en) * | 1974-07-15 | 1976-01-29 |
-
1977
- 1977-11-09 JP JP13430377A patent/JPS5468055A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3591491A (en) * | 1968-10-04 | 1971-07-06 | Edmund G Smith | Method for the treatment of aqueous wastes |
| JPS5112312U (en) * | 1974-07-15 | 1976-01-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5468055A (en) | 1979-05-31 |
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