JPS6129798B2 - - Google Patents
Info
- Publication number
- JPS6129798B2 JPS6129798B2 JP57204869A JP20486982A JPS6129798B2 JP S6129798 B2 JPS6129798 B2 JP S6129798B2 JP 57204869 A JP57204869 A JP 57204869A JP 20486982 A JP20486982 A JP 20486982A JP S6129798 B2 JPS6129798 B2 JP S6129798B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphorus
- wastewater
- time
- microorganisms
- support
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims description 13
- 239000011574 phosphorus Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 239000002351 wastewater Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 8
- 244000005700 microbiome Species 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000010802 sludge Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 150000003018 phosphorus compounds Chemical class 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- 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、下水、し尿等、りん化合物を含む有
機性廃水を生物学的に脱りん処理する方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for biologically dephosphorizing organic wastewater containing phosphorus compounds, such as sewage and human waste.
りん化合物を含む有機性廃水から生物学的にり
んを除去する方法としては、例えば第１図に示す
ように活性汚泥２を原廃水１と混合して嫌気的工
程３を経た後、次の生物学的酸化工程４に流入さ
せて処理すると、極めて旺盛なりんの生物学的摂
取が起ることが開示されている。 As a method for biologically removing phosphorus from organic wastewater containing phosphorus compounds, for example, as shown in Fig. 1, activated sludge 2 is mixed with raw wastewater 1, and after going through an anaerobic process 3, the next biological It has been disclosed that when treated by flowing into the biological oxidation step 4, extremely vigorous biological uptake of phosphorus occurs.
しかし、本発明者が追試実験を行つたところ第
２図及び第３図に示すように確かに生物学的酸化
工程すなわち好気工程で摂取が進み、りんが除去
されたが、次の汚泥を沈殿分離する固液分離工程
５でりんが再溶出してしまうという現象が見い出
された。この原因は、固液分離工程５で重力沈降
によつて汚泥と処理水とを分離するためにある程
度の時間を要し、この間に嫌気的状態となつてし
まい、りんの再溶出が一部生じてしまうからであ
る。 However, when the present inventor conducted follow-up experiments, as shown in Figures 2 and 3, phosphorus was indeed taken up during the biological oxidation process, that is, the aerobic process, and phosphorus was removed. A phenomenon has been discovered in which phosphorus is re-eluted in the solid-liquid separation step 5 in which precipitation is performed. The reason for this is that it takes a certain amount of time to separate sludge and treated water by gravity sedimentation in solid-liquid separation step 5, and during this time an anaerobic state occurs, causing some of the phosphorus to be re-eluted. This is because
本発明の目的は前記従来技術の欠点を解消し、
りんが汚泥から一部再溶出する固液分離工程を短
くし、汚泥からのりんの再溶出を少なくすること
のできる生物学的脱りん方法を提供することにあ
る。 The purpose of the present invention is to overcome the drawbacks of the prior art,
It is an object of the present invention to provide a biological dephosphorization method capable of shortening a solid-liquid separation step in which phosphorus is partially re-eluted from sludge and reducing the amount of phosphorus re-eluted from sludge.
本発明は、反応槽内に微生物が付着可能な支持
体を設け、微生物を付着せしめ、固液分離工程を
短くするようにしたものである。本発明を第４図
を用いてさらに詳述する。 According to the present invention, a support to which microorganisms can adhere is provided in a reaction tank to allow the microorganisms to adhere, thereby shortening the solid-liquid separation process. The present invention will be further explained in detail using FIG.
該支持体１０を充填した反応槽１２に原廃水１
４を流入せしめた後、酸素を含有していない気体
１６により反応槽上部を置換したのち、酸素を供
給せずに撹拌装置１８により撹拌せしめ、所定時
間後酸素含有ガス２０を供給してばつ気撹拌を行
い、さらに所定時間後ばつ気を停止し、静置して
上澄水を処理水２２として排出するという操作を
繰返し行い、廃水中のりんを除去するものであ
る。図中、２４はガス抜き管、２６は時間制御装
置を示す。上澄水を排出する際、微生物は支持体
に付着しており、ばつ気停止後の静置時間は短く
てよい。 Raw wastewater 1 is placed in a reaction tank 12 filled with the support 10.
4, the upper part of the reaction tank is replaced with a gas 16 that does not contain oxygen, and then stirred by a stirring device 18 without supplying oxygen, and after a predetermined time, an oxygen-containing gas 20 is supplied to aerate the tank. The phosphorus in the wastewater is removed by stirring, stopping the aeration after a predetermined period of time, allowing the system to stand, and discharging the supernatant water as treated water 22. In the figure, 24 indicates a gas vent pipe, and 26 indicates a time control device. When the supernatant water is discharged, the microorganisms are attached to the support, and the standing time after stopping the aeration may be short.
実施例
有効容量２の反応槽に網目状充填材（プラス
チツク製、メツシユ幅約10mm、ピツチ幅約30mm、
表面積650cm2）を充填し、原廃水を添加したの
ち、N2ガスで槽内気体を置換し、スターラを用
いて嫌気条件下で19時間撹拌し、その後、ばつ気
を開始し、４時間後ばつ気を停止し、つづいて30
分間静置後、上澄水を1.5排出した。この条件
での実験を約30日間行つたのち、嫌気条件下での
撹拌を７時間とし、さらに４時間のばつ気処理を
行い、30分間静置した後、上澄水を1.5排出し
た。このようにして排出された処理水中のPO4−
Ｐ濃度の経日変化を第５図に示す。嫌気−好気−
沈殿からなる連続処理で得られた結果と比較する
とそのPO4−Ｐ濃度は低く、好気処理後の静置時
間が30分と短くりんの再溶出は生じていない。Example A mesh packing material (made of plastic, mesh width of about 10 mm, pitch width of about 30 mm,
After filling the tank with a surface area of 650 cm 2 ) and adding raw wastewater, the gas in the tank was replaced with N 2 gas, stirred for 19 hours under anaerobic conditions using a stirrer, then aeration was started, and after 4 hours Stop the embarrassment, continue 30
After standing still for a minute, 1.5 minutes of supernatant water was discharged. After conducting the experiment under these conditions for about 30 days, stirring was continued under anaerobic conditions for 7 hours, aeration was further performed for 4 hours, and after standing still for 30 minutes, 1.5 hours of supernatant water was discharged. PO 4 − in the treated water discharged in this way
Figure 5 shows the daily change in P concentration. Anaerobic - aerobic -
Compared to the results obtained with continuous treatment consisting of precipitation, the PO 4 -P concentration was low, the standing time after aerobic treatment was short, 30 minutes, and no re-elution of phosphorus occurred.
なお、前記実施例においては、網目状充填材を
微生物付着支持体として用いたが、比重が１以上
の担体（活性炭、ゼオライト等）を反応槽に入
れ、微生物付着支持体として用いてもよい。 In the above examples, a mesh filler was used as a support for microorganisms to adhere to, but a carrier having a specific gravity of 1 or more (activated carbon, zeolite, etc.) may be placed in the reaction tank and used as a support for microorganisms to adhere to.
以上、本発明によると好気処理工程後の静置時
間を短くすることができ、りんの再溶出を生じさ
せずに廃水中のりんを除去することができる。 As described above, according to the present invention, it is possible to shorten the standing time after the aerobic treatment step, and it is possible to remove phosphorus from wastewater without causing re-elution of phosphorus.
第１図は従来の生物学的脱りん処理系統図、第
２図は従来の処理方法での処理結果経日変化、第
３図は従来の処理方法での好気工程と固液分離工
程でのPO4−Ｐ濃度の関係図、第４図は本発明の
実施態様を示す処理系統図、第５図は本発明によ
る処理結果の経日変化を示す図である。
１０……支持体、１２……反応槽、１４……原
廃水、１６……酸素を含有していない気体、１８
……撹拌装置、２０……酸素含有ガス、２２……
処理水。
Figure 1 is a conventional biological dephosphorization treatment system diagram, Figure 2 is the treatment results over time with the conventional treatment method, and Figure 3 is the aerobic process and solid-liquid separation process in the conventional treatment method. FIG. 4 is a treatment system diagram showing an embodiment of the present invention, and FIG. 5 is a diagram showing changes over time in treatment results according to the present invention. 10...Support, 12...Reaction tank, 14...Raw wastewater, 16...Oxygen-free gas, 18
... Stirring device, 20 ... Oxygen-containing gas, 22 ...
treated water.
Claims (1)
法において、微生物が付着可能な支持体を具備し
た反応槽を設け、原廃水を流入せしめた後酸素を
供給せずに撹拌し、所定時間後酸素含有ガスを供
給するためのばつ気撹拌を行い、さらに所定時間
後ばつ気を停止し、静置して上澄水を処理水とし
て排出し、これらの操作を繰返し行うことを特徴
とする廃水の生物学的脱りん方法。1. In a method of removing phosphorus from wastewater using microorganisms, a reaction tank equipped with a support to which microorganisms can adhere is provided, raw wastewater is introduced, stirred without supplying oxygen, and after a predetermined period of time. Wastewater that is characterized by carrying out aeration agitation to supply oxygen-containing gas, stopping aeration after a predetermined period of time, allowing it to stand, and discharging supernatant water as treated water, and repeating these operations. Biological dephosphorization method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20486982A JPS5995997A (en) | 1982-11-22 | 1982-11-22 | Biologically dephosphorizing method of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20486982A JPS5995997A (en) | 1982-11-22 | 1982-11-22 | Biologically dephosphorizing method of waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5995997A JPS5995997A (en) | 1984-06-02 |
| JPS6129798B2 true JPS6129798B2 (en) | 1986-07-09 |
Family
ID=16497741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20486982A Granted JPS5995997A (en) | 1982-11-22 | 1982-11-22 | Biologically dephosphorizing method of waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5995997A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS614600A (en) * | 1984-06-18 | 1986-01-10 | Agency Of Ind Science & Technol | Batch activated-sludge treatment |
| JPS6138693A (en) * | 1984-07-30 | 1986-02-24 | Shoji Takeuchi | Continuous process for treating filthy water by intermittent aeration and continuous treating apparatus for treating filthy water |
| JPS61118198A (en) * | 1984-11-13 | 1986-06-05 | Kankyo Eng Kk | Biological treatment of waste water |
| JPS61118195A (en) * | 1984-11-13 | 1986-06-05 | Kankyo Eng Kk | Biological treatment of waste water |
| JPS61118194A (en) * | 1984-11-13 | 1986-06-05 | Kankyo Eng Kk | Biological treatment of waste water |
| US5840737A (en) | 1996-01-04 | 1998-11-24 | The Curators Of The University Of Missouri | Omeprazole solution and method for using same |
| US8993599B2 (en) | 2003-07-18 | 2015-03-31 | Santarus, Inc. | Pharmaceutical formulations useful for inhibiting acid secretion and methods for making and using them |
| US8906940B2 (en) | 2004-05-25 | 2014-12-09 | Santarus, Inc. | Pharmaceutical formulations useful for inhibiting acid secretion and methods for making and using them |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51113361A (en) * | 1975-03-31 | 1976-10-06 | Hitachi Metals Ltd | Foul water cleaning apparatus |
| JPS5252467A (en) * | 1975-10-27 | 1977-04-27 | Hitachi Zosen Corp | Method for biological nitrification of ammonia in wastewater |
| JPS532947A (en) * | 1976-06-29 | 1978-01-12 | Toyobo Co Ltd | Process for cleaning waste water |
| JPS5581790A (en) * | 1978-12-15 | 1980-06-20 | Matsushita Electric Works Ltd | Clarification tank for excretion |
| JPS5586586A (en) * | 1978-12-26 | 1980-06-30 | Kobe Steel Ltd | Treating method of sewage |
| JPS5642997A (en) * | 1979-09-17 | 1981-04-21 | Ricoh Kk | Flash fixing power source |
| JPS56150487A (en) * | 1980-04-25 | 1981-11-20 | Kurita Water Ind Ltd | Disposal of sewage |
| JPS57107294A (en) * | 1980-12-26 | 1982-07-03 | Agency Of Ind Science & Technol | Dephosphorization method using organisms |
-
1982
- 1982-11-22 JP JP20486982A patent/JPS5995997A/en active Granted
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51113361A (en) * | 1975-03-31 | 1976-10-06 | Hitachi Metals Ltd | Foul water cleaning apparatus |
| JPS5252467A (en) * | 1975-10-27 | 1977-04-27 | Hitachi Zosen Corp | Method for biological nitrification of ammonia in wastewater |
| JPS532947A (en) * | 1976-06-29 | 1978-01-12 | Toyobo Co Ltd | Process for cleaning waste water |
| JPS5581790A (en) * | 1978-12-15 | 1980-06-20 | Matsushita Electric Works Ltd | Clarification tank for excretion |
| JPS5586586A (en) * | 1978-12-26 | 1980-06-30 | Kobe Steel Ltd | Treating method of sewage |
| JPS5642997A (en) * | 1979-09-17 | 1981-04-21 | Ricoh Kk | Flash fixing power source |
| JPS56150487A (en) * | 1980-04-25 | 1981-11-20 | Kurita Water Ind Ltd | Disposal of sewage |
| JPS57107294A (en) * | 1980-12-26 | 1982-07-03 | Agency Of Ind Science & Technol | Dephosphorization method using organisms |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5995997A (en) | 1984-06-02 |
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