JPS5936599A - Biological treatment of waste water containing organic material - Google Patents
Biological treatment of waste water containing organic materialInfo
- Publication number
- JPS5936599A JPS5936599A JP14703282A JP14703282A JPS5936599A JP S5936599 A JPS5936599 A JP S5936599A JP 14703282 A JP14703282 A JP 14703282A JP 14703282 A JP14703282 A JP 14703282A JP S5936599 A JPS5936599 A JP S5936599A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- anaerobic
- sludge
- wastewater
- aeration
- 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
Links
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
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.
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)
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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14703282A JPS5936599A (en) | 1982-08-24 | 1982-08-24 | Biological treatment of waste water containing organic material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14703282A JPS5936599A (en) | 1982-08-24 | 1982-08-24 | Biological treatment of waste water containing organic material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5936599A true JPS5936599A (en) | 1984-02-28 |
JPS6129797B2 JPS6129797B2 (en) | 1986-07-09 |
Family
ID=15420987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14703282A Granted JPS5936599A (en) | 1982-08-24 | 1982-08-24 | Biological treatment of waste water containing organic material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5936599A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61179982U (en) * | 1984-12-24 | 1986-11-10 |
-
1982
- 1982-08-24 JP JP14703282A patent/JPS5936599A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61179982U (en) * | 1984-12-24 | 1986-11-10 | ||
JPH044624Y2 (en) * | 1984-12-24 | 1992-02-10 |
Also Published As
Publication number | Publication date |
---|---|
JPS6129797B2 (en) | 1986-07-09 |
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