JPS5995997A - Biologically dephosphorizing method of waste water - Google Patents

Biologically dephosphorizing method of waste water

Info

Publication number
JPS5995997A
JPS5995997A JP20486982A JP20486982A JPS5995997A JP S5995997 A JPS5995997 A JP S5995997A JP 20486982 A JP20486982 A JP 20486982A JP 20486982 A JP20486982 A JP 20486982A JP S5995997 A JPS5995997 A JP S5995997A
Authority
JP
Japan
Prior art keywords
water
phosphorus
aeration
waste water
supply
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
Application number
JP20486982A
Other languages
Japanese (ja)
Other versions
JPS6129798B2 (en
Inventor
Yasutomo Otake
康友 大竹
Naomichi Mori
直道 森
Hironori Nakamura
裕紀 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Plant Construction Co Ltd
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Plant Construction Co Ltd
Hitachi Plant Technologies Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Plant Construction Co Ltd, Hitachi Plant Technologies Ltd filed Critical Hitachi Plant Construction Co Ltd
Priority to JP20486982A priority Critical patent/JPS5995997A/en
Publication of JPS5995997A publication Critical patent/JPS5995997A/en
Publication of JPS6129798B2 publication Critical patent/JPS6129798B2/ja
Granted legal-status Critical Current

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  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

PURPOSE:To decrease the elution of phosphorus again from sludge by sticking microorganisms to a support provided in a reaction vessel and performing alternately agitation and aerated agitation respectively for a prescribed time under non-supply and supply of O2, thereby reducing a solid-liquid sepn. stage wherein phosphorus is partly eluted again from the sludge. CONSTITUTION:Raw waste water 14 is admitted into a reaction vessel 12 packed therein with the above-described support 10, and thereafter the upper part of the tank 12 is substituted with gas 10 contg. no O2, then the waste water is agitated by an agitator 18 without the supply of O2. Gas 20 contg. O2 is supplied thereto after a prescribed time and the water is agitated under aeration and further the aeration is stopped after a prescribed time. The water is allowed to stand thereafter, and the supernatant water is discharged as treated water. The above-mentioned operation is performed repeatedly whereby the phosphorus in the waste water is removed. In the figure, 24 denotes a gas vent pipe and 26 a time control device. The microorganisms stick on the support in the stage of discharging the supernatant water and the standing time after the stop of the aeration may be reduced.

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２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８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。There are two methods for biologically removing phosphorus from organic wastewater containing phosphorus compounds.For example, as shown in Figure 1, activated sludge 2 is mixed with raw wastewater 1, and after passing through an anaerobic process 3, the 8th 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２本発明者が追試実験を行った。七ころ第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１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で重力沈降によって汚泥と処理水とを分離するだめ
にある程度の時間を要し、この間に嫌気的状態となって
しまい、りんの再溶出が一部生じてし壕２からである。However, two of the present inventors conducted follow-up experiments. As shown in Figures 2 and 3, the biological oxidation process, that is, the aerobic process, has certainly progressed the uptake and removed phosphorus, but the phosphorus is removed in the solid-liquid separation process 5 in which the primary sludge is precipitated and separated. A phenomenon was discovered in which the particles were re-eluted. The reason for this is that it takes a certain amount of time to separate the sludge and treated water by gravity settling in the solid-liquid separation step 5, and during this time an anaerobic state is created, and some of the phosphorus is re-eluted. This is from trench 2.

本発明の目的は前記従来技術の欠点を解消し。The object of the present invention is to overcome the drawbacks of the prior art.

りんが汚泥から一部再溶出する固液分離工程を短くシ、
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
学的膜りん方法を提供することにある。Shortens the solid-liquid separation process in which phosphorus is partially re-eluted from sludge.
An object of the present invention is to provide a biological membrane phosphorus method that can reduce re-elution of phosphorus from sludge.

本発明は８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
しだものである。本発明を第４−図を用すてさらに詳述
する。The present invention is designed to shorten the solid-liquid separation process by providing a support to which microorganisms can adhere in eight reaction vessels. The present invention will be further explained in detail using FIG.

該支持体］０を充填した反応槽］２に原廃水」４を流入
せしめた後、酸素を含有して因ない気体コ−６により反
応槽上部を置換したのち、ｅ素を供給せずに攪拌装置工
８により攪拌せしめ、所定時間後酸素含有カス２０を供
給してばつ気攪拌を行い、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、廃水中のシ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。After the raw wastewater 4 was allowed to flow into the reaction tank] 2 filled with the support [0], the upper part of the reaction tank was replaced with a non-oxygen-containing gas CO-6, and then without supplying e element. Stirring is performed using the stirring device 8, and after a predetermined time, oxygen-containing waste 20 is supplied and agitated, and after a predetermined time, the aeration is stopped, left to stand, and supernatant water is discharged as treated water 22. This process is repeated to remove silt from the wastewater. 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２ｔの反応槽に網目状充填材（プラスチック製
、メツ７ユ幅約１０　ｍｉｎ　＋　ピッチ幅約３０ｍｍ
、表面積６５０（Ｔｌｌ１２）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
ンを用めて嫌気条件下で１９時間攪拌し、その後。Example: A reaction tank with an effective capacity of 2 tons was filled with a mesh packing material (made of plastic, width of approximately 10 min + pitch width of approximately 30 mm)
After filling the tank with a surface area of 650 (Tll12) and adding raw wastewater, the gas in the tank was replaced with N2 gas, and the tank was stirred for 19 hours under anaerobic conditions using a stirrer.

ばつ気を開始し、４時間後ばつ気を停止し、つづいて３
０分間静置後、上澄水を１１．、５１排出した。Start the exposure, stop the exposure after 4 hours, then continue for 3 hours.
After standing still for 0 minutes, remove the supernatant water from 11. , 51 were discharged.

この条件での実験を約３０日間行ったのち、嫌気条件下
での攪拌を７時間とし、さらに４時間のばつ気処理を行
−，３０分間静置した後、上置水を１．５を排出した。After conducting the experiment under these conditions for about 30 days, stirring was carried out under anaerobic conditions for 7 hours, and aeration was further carried out for 4 hours. After standing still for 30 minutes, 1.5 It was discharged.

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。Figure 5 shows the daily change in the PO4-P concentration in the treated water discharged in this manner.

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＠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。Compared to the results obtained with the continuous treatment consisting of anaerobic-aerobic-precipitation, the PO4-P@ degree was low, the standing time after the aerobic treatment was short at 30 minutes, and no re-eluting 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。In the above examples, a mesh filler was used as the microorganism adhesion support, but a carrier having a specific gravity of 1 or more (activated carbon, zeolite, etc.) was placed in the reaction tank.

微生物付着支持体として用してもよい。It may also be used as a microbial attachment support.

以上２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。According to the above two aspects of 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.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の生物学的説りん処理系統図、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−ｐｍ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１８・・攪拌装
置　　　２０・・酸素含有ガス２２−処理水。 第１図Figure 1 is a conventional biological phosphorus treatment system diagram, Figure 2 is the treatment results over time using the conventional treatment method, and Figure 3 is the aerobic process and solid-liquid separation process using 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. DESCRIPTION OF SYMBOLS 10...Support 12...Reaction tank 18...Agitator 20...Oxygen-containing gas 22--treated water. Figure 1

Claims (1)

【特許請求の範囲】[Claims] 廃水中のシんを微生物を利用して除去する方法において
、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攪拌し、所
定時間後酸素含有ガスを供給するためのばつ気攪拌を行
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膜りん方法。In a method of removing silt from wastewater using microorganisms, a reaction tank equipped with a support to which microorganisms can adhere is provided, raw wastewater is poured into it, and then stirred without supplying oxygen for a predetermined period of time. Wastewater characterized by carrying out aeration in order to supply oxygen-containing gas, stopping the aeration after a predetermined period of time, allowing it to stand, and discharging supernatant water as treated water, and repeating these operations. Biological membrane phosphorus method.
JP20486982A 1982-11-22 1982-11-22 Biologically dephosphorizing method of waste water Granted JPS5995997A (en)

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 true JPS5995997A (en) 1984-06-02
JPS6129798B2 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)

Cited By (8)

* Cited by examiner, † Cited by third party
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
JPS61118194A (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
USRE45198E1 (en) 1996-01-04 2014-10-14 The Curators Of The University Of Missouri Omeprazole solution and method for using same
US8906940B2 (en) 2004-05-25 2014-12-09 Santarus, Inc. Pharmaceutical formulations useful for inhibiting acid secretion and methods for making and using them
US8993599B2 (en) 2003-07-18 2015-03-31 Santarus, Inc. Pharmaceutical formulations useful for inhibiting acid secretion and methods for making and using them

Citations (8)

* Cited by examiner, † Cited by third party
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
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

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0337999B2 (en) * 1984-06-18 1991-06-07 Kogyo Gijutsuin
JPS614600A (en) * 1984-06-18 1986-01-10 Agency Of Ind Science & Technol Batch activated-sludge treatment
JPH0137989B2 (en) * 1984-07-30 1989-08-10 Shoji Takeuchi
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
JPS61118194A (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
JPS61118198A (en) * 1984-11-13 1986-06-05 Kankyo Eng Kk Biological treatment of waste water
JPH0476757B2 (en) * 1984-11-13 1992-12-04 Kankyo Eng
JPH0476756B2 (en) * 1984-11-13 1992-12-04 Kankyo Eng
JPH0476758B2 (en) * 1984-11-13 1992-12-04 Kankyo Eng
USRE45198E1 (en) 1996-01-04 2014-10-14 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

Also Published As

Publication number Publication date
JPS6129798B2 (en) 1986-07-09

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