JPS5936599A - Biological treatment of waste water containing organic material - Google Patents

Abstract

PURPOSE:To stabilize a circulation system for treatment of waste water, by maintaining the state of the anaerobic sludge activated therein with anaerobic bacteria contg. facultative anaerobic bacteria in an anaeration tank and mixing and aerating the liquid removed of sludge and aerobic sludge in an aeration tank. CONSTITUTION:The waste water fed from a control tank 1 is aerated in an anaeration tank 2 by the air fed from a fan 6 and this aeration is intended for stirring weakly the waste water and for providing a trace amt. of dissolved oxygen into the liquid mixture to activate facultative anaerobic bacteria. The anaerobic sludge supplied from the tank 2 and the aerobic sludge contg. zooglea bacteria returned from a settling sepn. tank 5 are mixed and charged in a separator 3. The remaining waste water after separation of the sludge in the separator 3 and the liquid part introduced in a sludge dehydrator 9 are mixed with the aerobic sludge returned from the tank 5 and are charged in the tank 4 and the mixture is aerated by the air from the fan 6.

Description

【発明の詳細な説明】 この発１月は水産加工廃水１人畜し原廃水・農産ＩＪ１
ビ１−廃水々どの有機性物質を含む廃水の生物学的処理
）ｊ法の改良に関する。[Detailed description of the invention] This January, the fishery processing wastewater 1 person livestock raw wastewater / agricultural IJ1
B1 - Biological treatment of wastewater containing organic substances such as wastewater) Concerning improvements in the method.

この発］月の発１ｐ１者Ａ４１ま先に４是出した特願昭
５７１２（１（）６５’ｄにおいて、従来の活性汚泥法
による有機性物質を含む廃水の生物学的処理に代わる有
用な生物学的処理方法全提案したＯこの生物学的処理）
ｊ　ｔｌ＝：の腸徴とするところを、第１図及び第２図
のフロー７−１・に基づいて説１月すると、捷ず第１図
ｅこ示すように、有機性物質を含む廃水全調整槽１から
嫌気槽２９分離装ｆｆｆ３．曝気糟４及び沈降分離槽５
へ順に送ると共に沈降分離槽５で生成された好気性汚泥
を前記分離装置３．曝気槽４へ分配返送させる廃水処理
循環系であって、前記嫌気槽２においては、調整槽１か
ら給水される廃水を通性嫌気性細菌を含む嫌気性細菌が
顕在化した嫌気性汚泥の状態を維持するのに適する曝気
量で曝気し、前記分離装置３においては、」１記嫌気槽
２から供給される嫌気性汚泥と沈降分離槽５から返送さ
れるズーグレア（Ｚｏｏｇｌｏｅａ　）属細菌金含む好
気性細菌が顕在化した好気性汚泥を混合し凝集させて汚
泥全生成し、この凝集した汚泥は廃水処理循環系外へ排
出し、前記曝気槽４においては）上記分離装置３て生成
した汚泥を除いた液体部分及び沈降分離槽５から返送さ
れる好気性汚泥全混合し曝気して一嫌気性細菌が潜在化
し好気性細菌が顕在化した好気性汚泥の状態とし、前記
沈降分離槽５においてに、曝気槽４から供給される好気
性汚泥金倉む液全沈降分離（−で、」二澄液全処理水と
して放流し、沈降した好気性汚泥ヲ−に記の通り分離装
置３及０、曝気Ｊ”、ｌｌｉ　４へと分配して返送する
ようにしたところと、第２図に示すように、上記廃水処
理循環系の沈降５）剛１１す５で生成さハた好気性汚泥
全混合什１１１ｆｌ装置ｆ！’／、　３　、曝気Ｊｖ１
７４へ分配返送させると共に嫌気セ（す２へも分配返送
させるようにしたところにある。This issue] Monthly issue 1P1 Participant A41 filed a patent application 1987 (1()65'd) earlier, in which a useful alternative to the biological treatment of wastewater containing organic substances by the conventional activated sludge method was proposed. All biological treatment methods proposed (this biological treatment)
Based on the flow chart 7-1 in Figures 1 and 2, we assume that the intestinal symptoms of tl=: are the intestinal symptoms of wastewater containing organic substances, as shown in Figure 1e. All adjustment tank 1 to anaerobic tank 29 separation fff3. Aeration tank 4 and settling tank 5
The aerobic sludge produced in the sedimentation separation tank 5 is sent to the separation device 3. A wastewater treatment circulation system that distributes and returns the water to the aeration tank 4, in which the wastewater supplied from the adjustment tank 1 is in an anaerobic sludge state in which anaerobic bacteria including facultative anaerobic bacteria have become apparent. In the separation device 3, the anaerobic sludge supplied from the anaerobic tank 2 and the Zoogloea bacteria returned from the sedimentation separation tank 5 are aerated at an aeration amount suitable for maintaining the The aerobic sludge in which airborne bacteria have become apparent is mixed and flocculated to produce total sludge, and this flocculated sludge is discharged outside the wastewater treatment circulation system. The removed liquid portion and the aerobic sludge returned from the sedimentation separation tank 5 are all mixed together and aerated to form an aerobic sludge state in which anaerobic bacteria are latent and aerobic bacteria are exposed, and then in the sedimentation separation tank 5. The aerobic sludge supplied from the aeration tank 4 is separated by total sedimentation (-), and the aerobic sludge is discharged as two-clear liquid completely treated water, and the settled aerobic sludge is separated by separation equipment 3 and 0 as described in ``-'', and aeration. As shown in FIG. 111fl device f!'/, 3, aeration Jv1
The distribution is returned to the anaerobic station 74 and also to the anaerobic station 2.

このような生物学的処理力法Ｌ１１従来の活性汚泥法に
較べて、廃）１（の汚濁濃Ｊｌｆいかんにかかわらず処
理することができるために、廃水全稀釈する会費が々く
、その結果、曝気４：ｉ、Ｉ！１４等の諸装置ｆｉｆｆ
全ｆｆ化できると共に、運転管理が簡素化され、更に曝
気量が少くてよいためにランニングコストが減少さねる
々との抽々の特長金有しているＯしか１．なから、廃水
の汚濁成分や汚濁濃度の急変、気象条件の変化、あるい
はその他の物理化学的条件に変動があった場合には、廃
水処理循環系内の細菌の生存条件がこれらの諸要因に伴
って変動して円滑な廃水処理が行えなくなり、この結果
、廃水処理循環系を安定させるために多大の労力を必１
拐とする欠点があった。Compared to the conventional activated sludge method, this biological treatment method L11 can treat waste regardless of its concentration, so the fee for completely diluting the wastewater is high, and as a result, , aeration 4:i, I!14, etc.fiff
Only O has the following advantages: it can be fully turned off, operation management is simplified, and running costs can be reduced because only a small amount of aeration is required. Therefore, if there is a sudden change in the pollutant components or concentration of wastewater, changes in weather conditions, or other changes in physical and chemical conditions, the survival conditions of bacteria in the wastewater treatment circulation system may be affected by these factors. As a result, smooth wastewater treatment cannot be carried out due to fluctuations, and as a result, a great deal of effort is required to stabilize the wastewater treatment circulation system.
It had some drawbacks.

この発明はこのような事情に鑑みてなされたものであっ
て、廃水の汚濁成分や汚濁濃度の急変、気象条件の変化
、あるいはその他の物理化学的変化が生じた場合であっ
ても廃水処理循環系全安定させて円滑な廃水処理を行う
こと全目的とし、その特徴とするところは、前記特願昭
５７−１２００６５号に係る発明における嫌気槽２及び
曝気槽４内の廃水の一部をそれぞれ別の活性化タンクに
収り出してＣ／Ｎ比の調整と無機物の添加全行い且つこ
れら活性化タンクにおいて嫌気槽２及び曝気槽４におけ
るのと同一条件の曝気攪拌を行った後、そｈそれの活性
化タンク内の廃水全嫌気槽２及び曝気槽４に戻すように
したところにある。This invention was made in view of the above circumstances, and even when there is a sudden change in the pollutant components or concentration of wastewater, a change in weather conditions, or other physicochemical changes, the wastewater treatment cycle can be improved. The overall purpose is to stabilize the entire system and perform smooth wastewater treatment, and its characteristics are as follows. After carrying out all of the adjustment of the C/N ratio and addition of inorganic substances in another activation tank, and performing aeration and stirring under the same conditions as in the anaerobic tank 2 and the aeration tank 4, The entire wastewater in the activation tank is returned to the anaerobic tank 2 and the aeration tank 4.

この発明方法全第３図に示すフローシート全参照しつつ
詳細に説明する。The method of this invention will be explained in detail with reference to the entire flow sheet shown in FIG.

この発明方法は、廃水を調整槽ｌ、嫌気槽２゜分離装置
３．曝気槽４及び沈降分離槽５と循環させる廃水処理循
環系において、嫌気槽２及び曝気槽４内の廃水中の細菌
の活性化金促すものである０この廃水処理循環系呑作用
する細菌のうち、好気１ノ１：細菌りしＴ’　ｋｌスズ
−レア（ＺｏｏｇＩｏｅａ）属が主体で、その他酵ＩＵ
も含まれ、嫌気性細菌としては一部好気的性質をイＪす
る涌ｔ’ｌ嫌気性細菌、例えば、乳酸菌（ＬａｃＬｏｌ
〕ａｃｉｌ　Ｉｕｓ　）属、ペテイオコツカス（Ｐｅｄ
ｉｏｃｏｃｃｕｓ　）属、ストレプトコッカス（５ｔｒ
ｅｐｔｏｃｏｃｃｕｓ　）属、バチルス（Ｂａｃｉｌ　
ｌ１ｌｓ）馬番に属する細菌が必須で、その他側性嫌気
性細菌も含捷れでもよいのこれらの好気性細菌及び嫌気
性細菌は廃水処理循環系の運転開始前に枝糸の中にあら
かじめ投入しておくことにより以には核糸の中で自然増
殖したものが使用される。In this invention method, wastewater is divided into a regulating tank 1, an anaerobic tank 2, a separation device 3. In the wastewater treatment circulation system that circulates the aeration tank 4 and sedimentation separation tank 5, the bacteria in the wastewater in the anaerobic tank 2 and the aeration tank 4 are activated. , Aerobic 1/1: Mainly bacteria of the genus Zoog Ioea, other enzymes IU
Anaerobic bacteria also include anaerobic bacteria that have some aerobic properties, such as lactic acid bacteria (LacLol).
[acil Ius) genus, Ped.
iococcus), Streptococcus (5tr
eptococcus) genus, Bacillus (Bacillus)
l1ls) Bacteria belonging to the horse number are essential, and other lateral anaerobic bacteria may also be included.These aerobic bacteria and anaerobic bacteria should be added to the branch yarn before the operation of the wastewater treatment circulation system starts. By keeping them in place, those that have naturally proliferated within the nuclear filament can be used.

廃水ｖ：１、水産Ｄ１ビ［−廃水、畜産【〜原廃水、農
産加工廃水、その他のイ」機性物質全含む廃水であれば
その種類を問わずにすべてとの発１叫方法で処理するこ
とができる。Wastewater v: 1, Fisheries D1 Bi [-Wastewater, Livestock [~ Raw wastewater, agricultural processing wastewater, and other A] Wastewater containing all organic substances, regardless of its type, should be treated using the same method. can do.

この廃水は捷ず調整（漕ｌに集められ、ここで必要［応
じて液性の均一化、栄養源の添加、ＰＨ調節々との作業
が行われる。そＩ〜で、所定時間滞留させた後に、一定
ｌ■１が連続的に嫌気１’ｕ　２へ給水される。This wastewater is collected in a tank 1, where it is treated as necessary, such as equalizing the liquid, adding nutrients, and adjusting the pH. Afterwards, a certain amount of water is continuously fed into the anaerobic 1'u2.

嫌気槽２においては、前記調整槽ｌから送られる廃水が
送風機６から送り込捷れる空気によつンで曝気される。In the anaerobic tank 2, the wastewater sent from the adjustment tank 1 is aerated with the air sent from the blower 6.

この曝気は、廃水を弱く攪拌する目的と、嫌気性細菌の
主体をなす通性嫌気性細菌を顕在化させるため混合液に
溶存酸素を微量に提供する目的のためであるから、単位
汚濁物質当りの曝気量は曝気槽４における曝気量の通常
約１０分の１以下の弱い曝気でよいことが経１験的、笑
験的に判明している。これより多い量の曝気ヲ行うさ、
混合液の攪拌は十分に行わ力るものの、嫌気性細菌が潜
在化して曝気の目的に反することと々るためである。こ
のような条件に合致した曝気を行うことにより、嫌気槽
２内においては、嫌気性細菌が顕在・１じした嫌気性汚
泥が生息している状態が維持される。This aeration is for the purpose of stirring the wastewater weakly and providing a small amount of dissolved oxygen to the mixed liquid in order to bring out facultative anaerobic bacteria, which are the main group of anaerobic bacteria. It has been found empirically and experimentally that a weak aeration amount of about one-tenth or less of the aeration amount in the aeration tank 4 is sufficient. A larger amount of aeration is carried out,
This is because, although the mixed solution is sufficiently stirred, anaerobic bacteria may become latent, which defeats the purpose of aeration. By performing aeration that meets these conditions, a state in which anaerobic sludge in which anaerobic bacteria are present and remains inhabited is maintained in the anaerobic tank 2.

丑だ、この嫌気槽２では、嫌気槽２内の廃水を、ポンプ
７によって活性化タンク８に導いて、Ｃ／Ｎ比の調整と
無機物の添加を行うと共に、所定時間の間嫌気槽２にお
ける同一条件の曝気攪拌を送風機６から送られる空気に
よって行った後、この活性１にタンク８内の廃水全嫌気
槽２へ戻す。この活性１１Ｚタンク８の容１７１１ま通
常嫌気槽２容１１１の百分の１から十分の１程Ｊｆｆで
よい０又、Ｃ／Ｎ比は１０乃至２５の範囲内において廃
水の汚濁成分によって適宜選択調整さ、／１２る。この
Ｃ／Ｎ比の調整は廃水中に含−まねる嫌気性細菌全活性
化し、その増殖速度全速めるためにｔ−ｊうものである
が、Ｃ／Ｎ比が高い場合には尿素等窒累成４）を加えて
低下させ、Ｃ／Ｎ比が低い用台には、廃糖密匈の炭素成
分を加えて高くされるｏ　Ｍｉ、機物の添加は、Ｃ／Ｎ
比の調整と同様、廃水中に含−まハる嫌気性細菌全活発
化し、その増殖速度を速めるために行うものであるが、
通常活性硅酸５０％ｌ＆ｔＷ　全ベースに、その他の必
要な塩類５０ｑ６程度を含む溶液を、活性化タンク８容
量の３百分の１から十分の１程度添加する。活性化タン
ク８内で廃水を滞留させる時間は、廃水中に存在する油
性嫌気性細菌の***時間の１０倍程度、具体的には２時
開３０分程度が標準であるが、廃水の条件その他の理由
によって必要に応じて滞留時開全延長又は短縮する０こ
の活性化タンク８への嫌気槽２内の廃水の供給は、前記
した所定量全一括して供給して前記処理を施した後、再
び活性化タンク８内の廃水を一括して嫌気槽２内へ戻す
いわゆるバッチ処理が標準であるが、廃水組成が嫌気性
細菌の生育に特に適さない場合においては一定亀ヲ連続
的に供給してもよい。活性化タンク８で処理された廃水
は、１ｒ１記したようにそれに含まれる嫌気性細菌が活
性化しており、１１機物の微生物分解を促進するのに最
も適した状態となっているために、これを嫌気槽２へ戻
すことによって、嫌気槽２内の廃水もこの活性化タンク
８から戻された廃水と同様に有機物の微生物分解の促進
に適した状態すなわち廃水中の嫌気性細菌が活性化した
状態となるのである。この活性化タンク８における前記
廃水のバッチ処理は、廃水組成によって連続して行って
もよいが、廃水の諸条件の変化・に伴って処理系が円滑
に運転できなくなる可能性が生じた時だけ連続して行う
ようにしでもよい。活性化タンク８内の廃水の温度は、
嫌気槽２内の廃水の温度に対して±ｌＯ°Ｃ以内の範囲
が望ましいが、最も望１しくは３００Ｃ以−１１３２°
Ｃ以下である０ 尚、前記調整偵ｌと嫌気１：！　２は廃水の性質あるい
Ｑ１諸般の屯悄ｉ／（より調整槽ｌと嫌気（′ｉ！ｉ１
２を一つに一！ｔとめてと７１ら２つの（１１１Ｉ７［
，２全兼ねる調整嫌気（４：ｉとするこ古か−Ｃきるが
、これはこの発明方法の技術ｒ（］ｌｉχ囲（／ｒ含捷
りるものである。In this anaerobic tank 2, the wastewater in the anaerobic tank 2 is guided to the activation tank 8 by the pump 7, and the C/N ratio is adjusted and inorganic substances are added. After aeration and agitation under the same conditions is performed using air sent from the blower 6, this active 1 waste water in the tank 8 is returned to the anaerobic tank 2. This active 11Z tank 8 capacity 1711 may be approximately 1/100 to 1/10 Jff of the normal anaerobic tank 2 volume 111. Also, the C/N ratio may be selected as appropriate depending on the pollutant components of the wastewater within the range of 10 to 25. Adjusted, /12. This adjustment of the C/N ratio is intended to activate all the anaerobic bacteria contained in the wastewater and to fully accelerate their growth rate, but if the C/N ratio is high, nitrogen accumulation such as urea etc. 4) is added to lower the C/N ratio, and when the C/N ratio is low, the carbon component of waste sugar condensation is added to increase the C/N ratio.
Similar to adjusting the ratio, this is done to activate all the anaerobic bacteria contained in the wastewater and accelerate their growth rate.
Normally, a solution containing about 50q6 of other necessary salts is added to the total base of activated silicic acid 50% l&tW in an amount of about 1/300 to 1/10 of the volume of the activation tank 8. The standard time for the wastewater to remain in the activation tank 8 is about 10 times the division time of the oil-based anaerobic bacteria present in the wastewater, specifically about 30 minutes after opening at 2:00, but depending on the conditions of the wastewater and other factors. The waste water in the anaerobic tank 2 is supplied to the activation tank 8 as required, depending on the reason. The standard is a so-called batch process in which the wastewater in the activation tank 8 is returned all at once to the anaerobic tank 2, but in cases where the wastewater composition is not particularly suitable for the growth of anaerobic bacteria, a fixed amount of water may be continuously supplied. You may. As mentioned in 1r1, the anaerobic bacteria contained in the wastewater treated in the activation tank 8 have been activated, and the state is most suitable for promoting the microbial decomposition of the 11 organisms. By returning this to the anaerobic tank 2, the wastewater in the anaerobic tank 2 is also in a state suitable for promoting microbial decomposition of organic matter, similar to the wastewater returned from the activation tank 8, that is, the anaerobic bacteria in the wastewater are activated. This results in a state of Batch treatment of the wastewater in the activation tank 8 may be performed continuously depending on the composition of the wastewater, but only when there is a possibility that the treatment system cannot operate smoothly due to changes in the various conditions of the wastewater. It may be performed continuously. The temperature of the wastewater in the activation tank 8 is
The temperature of the waste water in the anaerobic tank 2 is preferably within ±10°C, but most preferably 300°C or more -1132°C.
C or below 0 In addition, the above-mentioned Coordinator Detective I and Disgust 1:! 2 is the property of wastewater or Q1 various tunyui/(from the adjustment tank l and anaerobic('i!i1
Two in one! t stop and 71 et al. two (111I7 [
, 2 also serves as an anaerobic adjustment (4:i), which is an old method of -C, but this is the technique of the method of this invention r (] li χ (/r included).

分離装置ｆｆ　３においては、１ｌｊｌ記嫌気イリ々２
から供給さｈる嫌気性汚泥吉沈降分１ｉ１１／、槽から
返送されてくるズーグレア（Ｚｏｏｇｌｎ曲）属細菌全
含む好気性汚泥が混合投入さノ土る０この両考の投入Ｉ
Ｔ１は固形物濃度で等１−技か好気性汚泥が少し多いＩ
ヨ１に投入さねる０この２つの種類の異なる汚泥は、そ
ｈそね相反する物１甲化を学的性質金有しており、とノ
１．ら相反する物、ｔｉｌｌ化学的＋Ｉ＋−貿のうち、
クーロン力、ファンデルワールス力による好気性汚泥と
嫌気性汚泥との親和性の増大、並びＶこ２つの汚泥聞に
おけるある種の高分子間結合反応の形成及び好気性細菌
により形成さ力た粘膜による粘２１）力なとの相剰効果
により、２つの汚泥Ｒｔｌ　（Ｃおける強固な凝集力か
もたらされる。この強固な凝集力並びに凝集の進行に伴
う溶解成分の取り込み効果によって、好気性細菌と嫌気
性細菌が共に顕在化した新たな汚泥が生成されると共に
、廃水の浄化作用が促進されるのである０ちなみに、同
一廃水から生成され、た好気性汚泥と嫌気性汚泥は、上
記のような強固力凝集力を有するが、これに反して、異
なった廃水から生成された好気性汚泥吉嫌気性汚泥との
間には、はとんど凝集力が生じないことが実験的に判明
している。このことは、凝集反応が、単にクーロン力。In the separation device ff 3, 1ljl anaerobic 2
The settled anaerobic sludge supplied from the tank is mixed with the aerobic sludge containing all the Zooglea bacteria returned from the tank.
T1 is equal to 1-technique in terms of solids concentration, or I has a little more aerobic sludge.
These two different types of sludge have contradictory chemical properties; contradictory things, till chemical +I+- trade,
Increased affinity between aerobic sludge and anaerobic sludge due to Coulomb force and van der Waals force, formation of a certain type of bonding reaction between polymers between these two sludges, and increased mucous membrane formed by aerobic bacteria. The strong cohesive force of the two sludge Rtl (C) is brought about by the mutual effect of the viscosity caused by the viscosity (21). This strong cohesive force and the effect of taking in dissolved components as the flocculation progresses cause aerobic bacteria and New sludge is generated in which anaerobic bacteria are exposed, and the purification effect of wastewater is promoted.0By the way, aerobic sludge and anaerobic sludge, which are generated from the same wastewater, are different from each other as described above. However, it has been experimentally found that no cohesive force occurs between aerobic sludge and anaerobic sludge produced from different types of wastewater. This means that the coagulation reaction is simply a Coulomb force.

ファンデルワールス力にのみによシするものではなく、
ある種の高分子間結合反応の存在を示すものであるＯ 嫌気性細菌としては、前記した通性嫌気性細菌の添加が
不可欠であるが、通性嫌気性細菌として乳酸菌属細菌全
含捷せた場合には、この乳酸菌の作用によって、嫌気性
汚泥の生成が助しされ強固な凝集効果が一段と増大する
と同時に、嫌気１ｊｌ”＋　２における嫌気的条件の元
での腐敗細菌の増殖に伴う腐敗状態の進行が遅延され、
従って腐敗臭の発生が防止される効果がある。It does not rely solely on van der Waals forces, but
O indicates the presence of a certain type of polymer bonding reaction.As anaerobic bacteria, it is essential to add the facultative anaerobic bacteria mentioned above. In such cases, the action of these lactic acid bacteria promotes the production of anaerobic sludge, further increasing the strong flocculation effect, and at the same time inhibiting the growth of spoilage bacteria under anaerobic conditions. The progress of the condition is delayed,
Therefore, there is an effect of preventing the generation of putrid odor.

このようにして、別たに〈１成した汚泥は分離装置３か
ら分離して収り出して汚泥脱水機９によって固液分離さ
ねて、固体部分はこの廃水処理循環系外へ排１１１１さ
れ、液体部分は分離装置３で汚泥全除去した残余の廃水
♂共に、曝気博４へき送られる。この針部、装置３１ｃ
ｉ図示する沈降糟形式のものに限定されず、その他の機
械的、物理的手段による分離装置Ｉ　’に含むものであ
る。In this way, the formed sludge is separated and collected from the separator 3, subjected to solid-liquid separation by the sludge dehydrator 9, and the solid portion is discharged 1111 to the outside of this wastewater treatment circulation system. The liquid portion is sent to the aeration tank 4 together with the remaining wastewater from which the sludge has been completely removed in the separator 3. This needle part, device 31c
It is not limited to the sedimentation tank type shown in the figure, but may be included in the separation device I' using other mechanical or physical means.

尚、油性嫌気性細菌として、ｊ乳酸菌属細菌が主体をな
す場合においては、汚泥は乳酸菌属細菌等の嫌気性細菌
の作用により、放首状態においても腐敗が進行せず、従
って、汚泥による二次公害はもたらされない。In addition, when lactic acid bacteria are the main oily anaerobic bacteria, the sludge does not decompose even in the open state due to the action of lactic acid bacteria and other anaerobic bacteria. No further pollution will be caused.

曝気４：ｉ、１４においては、前記のように、分離装置
３で汚泥全分前した残余の廃水と汚泥脱水機９で生じだ
液（上部分が沈降分離セ（１］５から返送される好気性
汚泥と混合投入されて、送風機６から送り込捷れる′４
Ｊ、気によって曝気される０この曝気によって、廃、水
中の好気性紹１菌が顕在比し嫌気性細菌が潜在化した好
気性汚泥が生成され、廃水が浄化さね、る〇 捷だ、この曝気槽４でも、曝気槽４内の廃水を、ポンプ
１０によって活性化そタンク１ｌｖｃ導いて、Ｃ／Ｎ比
の調整と無機物の添加全行うと共に、所定時間の間曝気
槽４における同一条件の曝気攪拌を送風機６から送られ
る空気によって行った後、この活性化タンク１１内の廃
水を曝気槽４へ戻す。In aeration 4:i, 14, as mentioned above, the remaining wastewater from which all the sludge has been removed in the separator 3 and the sludge produced in the sludge dehydrator 9 (the upper part is returned from the sedimentation separation unit (1) 5) The sludge is mixed with aerobic sludge and sent through the blower 6.'4
J, Aerated by air This aeration produces aerobic sludge in which aerobic bacteria in the waste water become apparent and anaerobic bacteria become latent, and the waste water is purified. In this aeration tank 4 as well, the wastewater in the aeration tank 4 is activated by the pump 10 and guided to the tank 1lvc, and the C/N ratio is adjusted and inorganic substances are added. After aeration and stirring are performed using air sent from the blower 6, the wastewater in the activation tank 11 is returned to the aeration tank 4.

この活性化タンク１１の容量は、通常汚泥活性化曝気槽
４容量の百分の１から十分の１程度でよい０好捷しいＣ
／Ｎ比の範囲、Ｃ／Ｎ比の調整の仕方、無機物の添加、
活性化１タンク１１内における廃水の曝気攪拌のための
滞留時間、バッチ処理が標準である点等は前記嫌気槽２
の活性化タンク８の箇所で説明した内容と、本活性化タ
ンク１１の設置目的が好気性細菌を活発化させる点であ
るの會除いて、同じである゛０活性化タンクｌｌ内の温
度条件につめては、曝気槽４内の廃水の温度に対して±
５°Ｃの範囲が望ましいが、最も望ましいのは２５°Ｃ
以上２７°Ｃ以下である０ここで、前記嫌気槽２に１投
けた活性化タンク８内の廃水の温ｊＩｆと差異が生じる
のＱま、対象とする細酌群の外的温度条件に対する拠＋
ｌｉｌ＋が異なることによるイ）のである。The capacity of this activation tank 11 is usually about 1/100 to 1/10 of the capacity of the sludge activation aeration tank 4.
/N ratio range, how to adjust the C/N ratio, addition of inorganic substances,
The residence time for aeration and agitation of wastewater in the activation 1 tank 11 and the fact that batch processing is standard are the same as in the anaerobic tank 2.
The temperature conditions in the activation tank 11 are the same, except for the content explained in the activation tank 8 section and the purpose of installing the activation tank 11 is to activate aerobic bacteria. Finally, the temperature of the wastewater in the aeration tank 4 is ±
A range of 5°C is desirable, but the most desirable is 25°C.
The temperature is 27°C or less.0Here, the temperature of the wastewater in the activation tank 8, which has been poured into the anaerobic tank 2, is different from the temperature jIf. +
A) is due to the difference in lil+.

沈降分前Ｊ：ｉ、ｌＶ　５には、この好気性汚泥を含む
廃水が一定１ｆ［連続的に入れら７′する。そして、こ
の沈降分離槽５にお鯖で沈降した好気性汚泥は汚泥ポン
プ１２によって、前記のように、分１雁装置腎３及び曝
気槽４へと分配して返送され、一方、−に澄液は処理水
として放流される〇 尚・嫌気］■２において−［、運転開始前に投入された
通性嫌気性１１）繭全含む嫌気性ＩＩＩ菌が曝気によっ
て廃水の流出入にもかが１つらず増殖し続けて嫌気性汚
泥全生成しているが、廃水の汚濁濃度が諸種の理由によ
って減少した場合にはＩ）１」記ｔＳ気性細面の増殖が
不可能と々ることも生じイｊするので、第４図に示すよ
うに、沈降分離槽５で分離−シた好気性汚泥を、嫌気（
漕２へも返送する廃水処理循環系とすることができる。A constant 1f of wastewater containing this aerobic sludge is continuously poured into J:i,lV 5 before settling. The aerobic sludge settled in the sedimentation separation tank 5 is distributed and returned to the sludge pump 12 and the aeration tank 3 and the aeration tank 4 as described above, while the sludge is clarified in the - The liquid is discharged as treated water.〇In addition, anaerobic]■ In 2-[, Facultative anaerobic 11) Anaerobic III bacteria containing whole cocoons are also affected by the inflow and outflow of wastewater due to aeration. The anaerobic sludge continues to grow one by one, producing all the anaerobic sludge, but if the pollution concentration in the wastewater decreases for various reasons, it may become impossible for the anaerobic sludge to grow. Therefore, as shown in Fig. 4, the aerobic sludge separated in the settling tank 5 is treated with anaerobic (
A wastewater treatment circulation system that also returns to tank 2 can be provided.

この糸の場合には、好気性汚泥中に潜在化”している嫌
気性細菌が嫌気槽２で前記した曝気によって顕在化し増
殖することができるからである。従って、この系におい
ては、嫌気槽２全出た廃水中には、嫌気性細菌が顕在化
れ〜好気性細菌が潜在化した嫌気性汚泥が含−４ｉ′７
いるが、この嫌気性汚泥を含む廃水吉沈降分離槽５から
返送さ力る好気性細菌が顕在化し嫌気性細菌が潜在化（
〜ている好気性汚泥が混合されて新たな汚泥を生成する
のは、前記系と同様である０又、この系の場合１／］−
ｉ、前記沈降分離槽５て沈降分離された好気性汚泥の嫌
気槽２９分離装置３及び曝気槽４への分配返送量は、嫌
気槽２への返送量が最も少く、分離装置３又は曝気槽２
への返送量の約１０分の１以下である。この理由は、嫌
気槽２への好気性汚泥の返送は、好気性汚泥中に潜在化
している嫌気性細菌全廃水と混合して、嫌気槽２内にお
ける嫌気的条件でこれら嫌気性細菌全増殖するためであ
るので少くてよいが、分離装置３においては、好気的及
び嫌気的性質を兼ね備えた汚泥を生成し、また、曝気槽
４においては、好気性汚泥全多量に生成し廃水処理効果
を高めるために多量の返送が必要となるからである。し
かし、廃水の汚濁ｉ！ｉｉ度が極端に低い場合には、嫌
気槽２への返送ｒ？ｉｋ前記は以−にに返送したり、あ
るいは、嫌気槽２出口において、図外の嫌気沈降槽金膜
けてｆ＜）た嫌気濃縮汚泥′ｆｒ：嫌気］”１１ｖ２に
直接戻す必要がある〇四に又、通性嫌気性細菌に乳酸菌
属細菌を含捷せた場合の効果については、前記系と同じ
であるＯ 上記２つの廃水処理循環系の説りＪにおいて、嫌気槽２
及び曝気槽４における曝気全送風機６から送り込−まη
る空気によって行う例について説明したが、と−ｈに代
えて、他の手段による曝気であってもよいのし４勿論で
ある。更に又、沈降分離槽５で分離さ力、た好気性汚泥
中に顕在化している好気性細菌全一層活発化させて、分
離装置３及び曝気槽４における汚泥生成効率金高めるた
めに、沈降分離槽５にて沈降した好気性汚泥を再曝気す
る図外の再曝気槽を経由してから分配返送するようにし
てもよい。This is because in the case of this thread, anaerobic bacteria that are latent in the aerobic sludge can emerge and multiply by the aeration described above in the anaerobic tank 2. Therefore, in this system, 2 The wastewater discharged contains anaerobic sludge in which anaerobic bacteria have become apparent and aerobic bacteria have become latent.
However, aerobic bacteria in the wastewater containing this anaerobic sludge returned from the sedimentation separation tank 5 become apparent, and anaerobic bacteria become latent (
The aerobic sludge mixed with ~ to generate new sludge is the same as the above system.In addition, in this system, 1/]
i. The amount of aerobic sludge sedimented and separated in the sedimentation separation tank 5 is distributed and returned to the anaerobic tank 29, separation device 3, and aeration tank 4. The amount returned to the anaerobic tank 2 is the smallest, and the amount returned to the separation device 3 or the aeration tank is the smallest. 2
This is less than one-tenth of the amount returned to Japan. The reason for this is that when the aerobic sludge is returned to the anaerobic tank 2, it is mixed with all the wastewater of the anaerobic bacteria latent in the aerobic sludge, and all of these anaerobic bacteria are multiplied under anaerobic conditions in the anaerobic tank 2. However, in the separator 3, sludge with both aerobic and anaerobic properties is produced, and in the aeration tank 4, a large amount of aerobic sludge is produced to improve the wastewater treatment effect. This is because a large amount of returned goods is required to increase the value. However, wastewater pollution i! If the temperature is extremely low, return it to anaerobic tank 2. It is necessary to return the above to the anaerobic tank 2 outlet, or directly return it to the anaerobic sedimentation tank gold film (not shown) at the anaerobic tank 2 outlet. Fourth, the effect of adding lactic acid bacteria to facultative anaerobic bacteria is the same as in the above system.
and the aeration flow from the aeration blower 6 in the aeration tank 4.
Although an example has been described in which aeration is carried out using air, it is of course possible to use other means of aeration instead of -h. Furthermore, in order to further activate the aerobic bacteria present in the aerobic sludge separated in the sedimentation separation tank 5 and increase the sludge production efficiency in the separation device 3 and the aeration tank 4, the sedimentation separation is performed. The aerobic sludge settled in tank 5 may be distributed and returned after passing through a re-aeration tank (not shown) for re-aerating the aerobic sludge.

以上の説明から明らか々ように、この発明方法は、有機
性物質を含む廃水全調整槽１から嫌気槽２、分離装置３
．曝気槽４及び沈降分離槽５へ順に送ると共に沈降分離
槽５で生成された好気性汚泥を前記分離装置３．曝気槽
４へ分配返送させる廃水処理循環系、あるいは、前記系
における沈降分離槽５で生成された好気性汚泥を前記分
離装置３、曝気槽４へ分配返送させると共に嫌気槽２へ
も分配返送させる廃水処理循環系において、嫌気槽２及
び＠気槽４に活性化タンク８．ｌｌｋ設け、各槽２，４
内の廃水全こねら活性化タンク８，１１に導いて、嫌気
性細菌又は好気性細菌を活発化させた後に再び元の嫌気
槽２及び曝気槽４へ戻すようにしたものであるから、そ
ねぞわの糟２，４内の細菌−む活発化して、廃水中に含
１ね、る微生物が活性化された状態、すなわち、廃水中
の有機物の分解に適した状態となるように調整されるた
めに、廃水処理系の安定化を図ることができる。従って
、廃水の汚濁成分や汚濁濃度が急変した場合、気象条件
の変化〈その他の物理化学的変化にも十分に対応するこ
とができると共に、円滑な効率良い廃水処理を行うこと
ができる〇As is clear from the above explanation, the method of the present invention includes a total wastewater containing organic substance from the adjustment tank 1 to the anaerobic tank 2 and the separation device 3.
．． The aerobic sludge produced in the sedimentation separation tank 5 is sent to the aeration tank 4 and the sedimentation separation tank 5 in order, and the aerobic sludge is sent to the separation device 3. A wastewater treatment circulation system that distributes and returns to the aeration tank 4, or aerobic sludge generated in the sedimentation separation tank 5 in the system, which distributes and returns the aerobic sludge to the separation device 3 and the aeration tank 4, and also distributes and returns it to the anaerobic tank 2. In the wastewater treatment circulation system, an activation tank 8 is installed in the anaerobic tank 2 and @air tank 4. llk provided, each tank 2, 4
All of the waste water in the tank is introduced into the activation tanks 8 and 11 to activate anaerobic bacteria or aerobic bacteria, and then returned to the original anaerobic tank 2 and aeration tank 4. Adjustment is made so that the bacteria in the rice cakes 2 and 4 are activated and the microorganisms contained in the wastewater are activated, that is, the state is suitable for the decomposition of organic matter in the wastewater. Therefore, it is possible to stabilize the wastewater treatment system. Therefore, if there is a sudden change in the pollutant components or concentration of wastewater, changes in weather conditions (or other physical and chemical changes) can be adequately responded to, and smooth and efficient wastewater treatment can be carried out.

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

第１図及び第２図はいずれも活性化タンクを設けない廃
水処理循環系のフローシート、第３図及び第４図はいず
れもこの発Ｉｌｌのフローシート例ヲそｈ、それ示ずＯ １゛調整搏）２゛嫌気槽、：］・・・分離装置、４　・
曝気槽、５　沈降ツ）ｌｉ１１Ｆ槽、８．１１・・活性
化タンク０ 特、ｒｌ−出願人　　　大篠津食品工業株式会社同代理
人　　渡　　辺　　三　　彦 昭和５８年５月２３日 特許庁長官　若杉和夫殿 １、事件の表示 昭和５７年特許願第１４７０３２号 ２、発明の名称 有機性物質を含む廃水の生物学的処理方法３、補正をす
る者 事件との関係　特許出願人 名称　大篠津食品株式会社 ４、代理人　〒５３０電話大阪０６　（３６１）　３８
３１住所　大阪市北区太融町２番２１号 １１）　　明細書の発明の詳細な説明の欄６、補正の内
容 （１）発明の詳細な説明の欄 ■　明細書第１２真第１９行目 １元で」を１下で」に補正する。 ■　明細書第１４貴第９行目 「汚泥活性化」を消去する。 ■　明細書第１６頁第１１行目 「曝気槽２」を１１１ｊｌ気槽４」に補正する。 以上 （２）　　　　”Figures 1 and 2 are flow sheets for a wastewater treatment circulation system without an activation tank, and Figures 3 and 4 are examples of flow sheets for this process;゛Adjustment) 2゛Anaerobic tank, :]... Separation device, 4 ・
Aeration tank, 5 Sedimentation tank, li11F tank, 8.11...Activation tank 0 Special, RL- Applicant: Oshinozu Food Industry Co., Ltd. Agent: Mitsuhiko Watanabe May 23, 1980 Commissioner of the Japan Patent Office Kazuo Wakasugi 1. Indication of the case Patent Application No. 147032 filed in 1982 2. Name of the invention Biological treatment method for wastewater containing organic substances 3. Person making the amendment Relationship with the case Patent applicant name Oshinotsu Foods Co., Ltd. 4. Agent 530 Telephone Osaka 06 (361) 38
31 Address: 2-21 Tayu-cho, Kita-ku, Osaka 11) Detailed explanation of the invention in the specification column 6, contents of amendment (1) Detailed explanation of the invention column ■ Line 19 of the 12th line of the specification Correct "at 1 yuan" to "at 1 yuan". ■ Delete "Sludge activation" on line 9 of No. 14 of the specification. - Correct "Aeration tank 2" on page 16, line 11 of the specification to "111jl Air tank 4". That’s all (2)”

Claims (1)

【特許請求の範囲】 １　有機性物質を含む廃水を調整槽から嫌気槽。 分離装置、曝気槽及び沈降分離槽へ順に送ると共に沈降
分離槽で生成された好気性汚泥全前記分離装置、曝気槽
へ分配返送させる廃水処理循環系であって、前記嫌気槽
においては、調整槽から給水される廃水を通性嫌気性細
菌を含む嫌気性細菌が顕在化した嫌気性汚泥の状態とし
、前記曝気槽においては、上記分離装置で生成した汚泥
を除いた液体部分及び沈降分離槽から返送さ力る好気性
汚泥を混合し曝気して、嫌気性細菌が潜在化し好気性細
菌が顕在化した好気性汚泥の状態とし、更に、これら嫌
気槽及び曝気槽内の廃水の一部全それぞれ別の活性化タ
ンクに収り出してＣ／Ｎ比の調整と無機物の添加を行い
且つこれら活性化タンク内において嫌気槽及び曝気槽に
おけるのと同一条件の曝気攪拌を行った後、それぞれの
活性化タンク内の廃水を嫌気槽及び曝気槽へ戻すことを
特徴とする有機性物質を含む廃水の生物学的処理方法０
２　前記通性嫌気性細菌が乳酸菌属細菌ヶ含む通性嫌気
性細菌である特許請求の範囲第１項記載の有機性物質を
含む廃水の生物学的処理方法０３　有機性物質ケ含む廃
水を調整槽から嫌気槽。 分離装置、曝気槽及び沈降分離槽へ順に送ると共に沈降
分離槽で生成された好気性汚泥を前記嫌気槽１１分離装
置、曝気槽へ分配返送させる廃水処理循環系であって、
前記嫌気槽においては、調整槽から給水される廃水と沈
降分Ｐ１．糟から返送さ：ｈる好気性汚泥を混合した液
をズーグレア（Ｚｏｏｇｌｏｅａ　）属細菌を含む好気
性細菌が潜在化し通性嫌気性細菌を含む嫌気性細菌が顕
在化１〜だ嫌気性汚泥の状態とし、前記曝気槽において
は、上記分離装置で生成した汚泥を除いた液体部分及び
沈降分離槽から返送される好気性汚泥全混合し曝気して
、嫌気性細菌が潜在化し好気性細菌が顕在化した好気性
汚泥の状態とし、更に、これら嫌気槽及び曝気槽内の廃
水の一部をそれぞれ別の活性化タンクに収り出してＣ／
Ｎ比の調整と無機物の添加全行い且つこ力ら活性化タン
ク内において嫌気（・ｈ及び曝気槽におしするのと回−
条件の曝気１ｆ１拌を行った後、そ力ぞ力の活性化タン
ク内の廃水を嫌気槽及び曝気（曹へ戻すことケ１．１徴
とする有機性物質を含む廃水の生物学的処叩方法０ ４　　＋ｌｆｉ記通性嫌気性細菌が乳酸菌属細菌を含む
通性嫌気性細菌である特許請求の範囲第３項記載の有機
性物質を含む廃水の生物学的処理方法０[Claims] 1. Waste water containing organic substances is transferred from a regulating tank to an anaerobic tank. A wastewater treatment circulation system that sequentially sends aerobic sludge to a separation device, an aeration tank, and a sedimentation separation tank, and distributes and returns all the aerobic sludge generated in the sedimentation separation tank to the separation device and the aeration tank, and in the anaerobic tank, an adjustment tank is provided. In the aeration tank, the waste water supplied from the water supply is in the state of anaerobic sludge in which anaerobic bacteria including facultative anaerobic bacteria have become apparent, and in the aeration tank, the liquid portion excluding the sludge generated in the separation device and the sedimentation separation tank are The returned aerobic sludge is mixed and aerated to form an aerobic sludge in which anaerobic bacteria are latent and aerobic bacteria are apparent, and a portion of the wastewater in the anaerobic tank and aeration tank is further removed. After the mixture is transferred to another activation tank, the C/N ratio is adjusted and inorganic substances are added, and in these activation tanks, aeration and stirring are performed under the same conditions as in the anaerobic tank and the aeration tank. Biological treatment method for wastewater containing organic substances, characterized by returning wastewater in a chemical tank to an anaerobic tank and an aeration tank
2. Biological treatment method for wastewater containing organic substances according to claim 1, wherein the facultative anaerobic bacteria are facultative anaerobic bacteria including bacteria of the genus Lactobacillus 03. Conditioning wastewater containing organic substances. From the tank to the anaerobic tank. A wastewater treatment circulation system that sequentially sends aerobic sludge to a separation device, an aeration tank, and a sedimentation separation tank, and distributes and returns aerobic sludge generated in the sedimentation separation tank to the anaerobic tank 11 separation device and aeration tank,
In the anaerobic tank, wastewater supplied from the adjustment tank and sediment P1. The mixed solution of aerobic sludge returned from the sludge is mixed with aerobic sludge, in which aerobic bacteria including Zoogloea bacteria become latent and anaerobic bacteria including facultative anaerobic bacteria become apparent. In the aeration tank, the liquid part excluding the sludge generated in the separation device and the aerobic sludge returned from the sedimentation separation tank are all mixed and aerated, causing anaerobic bacteria to become latent and aerobic bacteria to become apparent. Furthermore, some of the wastewater in the anaerobic tank and aeration tank is collected into separate activation tanks and treated with C/C.
Adjustment of the N ratio and addition of inorganic substances, and anaerobic (・h) in the activation tank as well as the addition of inorganic substances to the aeration tank.
After carrying out the aeration and stirring of the conditions, the wastewater in the activation tank is transferred to an anaerobic tank and aeration (return to carbon dioxide).1.1 Biological treatment of wastewater containing organic substances is performed. Method 0 4 +lfi Biological treatment method 0 of wastewater containing organic substances according to claim 3, wherein the permeable anaerobic bacteria are facultative anaerobic bacteria including bacteria of the genus Lactobacillus.