JPH02253898A - Anaerobic treatment of waste water - Google Patents
Anaerobic treatment of waste waterInfo
- Publication number
- JPH02253898A JPH02253898A JP1073867A JP7386789A JPH02253898A JP H02253898 A JPH02253898 A JP H02253898A JP 1073867 A JP1073867 A JP 1073867A JP 7386789 A JP7386789 A JP 7386789A JP H02253898 A JPH02253898 A JP H02253898A
- Authority
- JP
- Japan
- Prior art keywords
- ammonia
- reactor
- water
- anaerobic
- anaerobic reactor
- 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.)
- Pending
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 38
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 172
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 86
- 244000005700 microbiome Species 0.000 claims abstract description 16
- 238000009792 diffusion process Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 18
- 229910017464 nitrogen compound Inorganic materials 0.000 claims description 11
- 150000002830 nitrogen compounds Chemical class 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000004065 wastewater treatment Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 80
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 10
- 239000001569 carbon dioxide Substances 0.000 abstract description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 4
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- Y02W10/12—
Landscapes
- Physical Water Treatments (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、嫌気性微生物で廃水処理する廃水の嫌気性処
理方法に係り、特に廃水中の窒素化合物濃度が高い場合
の廃水の嫌気性処理方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for anaerobic treatment of wastewater using anaerobic microorganisms, and particularly to anaerobic treatment of wastewater when the concentration of nitrogen compounds in the wastewater is high. It is about the method.
［従来の技術］
廃水の嫌気性処理方法は、嫌気性微生物の作用によって
廃水中の有機物質を還元的に分解消化するものであり、
第７図に示すように、廃水を原水調整槽ａに貯溜した後
、原水ボン１ｂで嫌気性リアクタＣに送り、そこで嫌気
性微生物の作用によって廃水処理を行い、処理水は嫌気
性リアクタＣから流出配管ｄに流出・するようになって
いる、また、嫌気性リアクタＣの上澄水あるいは流出配
管ｄに流出された処理水を返送ポンプｅで原水調整槽ａ
あるいは嫌気性リアクタＣに返送して、廃水を嫌気性処
理する場合もある。[Prior Art] Anaerobic wastewater treatment methods reductively decompose and digest organic substances in wastewater through the action of anaerobic microorganisms.
As shown in Fig. 7, after wastewater is stored in a raw water adjustment tank a, it is sent to an anaerobic reactor C using a raw water tank 1b, where the wastewater is treated by the action of anaerobic microorganisms, and the treated water is sent from the anaerobic reactor C. The supernatant water of the anaerobic reactor C or the treated water discharged to the outflow pipe d is sent to the raw water adjustment tank a using a return pump e.
Alternatively, the wastewater may be returned to the anaerobic reactor C for anaerobic treatment.
［発明が解決しようとする課題］
しかしながら、従来の廃水の嫌気性処理方法にあっては
、廃水中のタンパク質等の窒素化合物濃度が高い（廃水
中の窒素分としての濃度が１０００ｕ／ＩＩ以上）と、
窒素化合物は嫌気性リアクタ内でアンモニアに変換し、
このアンモニアが大部分水に溶解するので、嫌気性リア
クタ内のアンモニア濃度が高くなり、アンモニアが嫌気
性微生物に阻害作用を及ぼすために、嫌気性リアクタの
廃水処理能力が低下する問題があった。[Problem to be solved by the invention] However, in the conventional anaerobic treatment method of wastewater, the concentration of nitrogen compounds such as proteins in the wastewater is high (concentration as nitrogen content in the wastewater is 1000 u/II or more). and,
Nitrogen compounds are converted to ammonia in an anaerobic reactor,
Since most of this ammonia is dissolved in water, the ammonia concentration within the anaerobic reactor becomes high, and since ammonia exerts an inhibitory effect on anaerobic microorganisms, there is a problem that the wastewater treatment capacity of the anaerobic reactor decreases.
そこで、本発明は、上記課題を解決すべくなされたもの
で、高濃度窒素化合物を含む廃水を処理する場合、嫌気
性リアクタ内のアンモニア濃度を低減できる廃水の嫌気
性処理方法を提供することを目的とする。Therefore, the present invention has been made to solve the above problems, and aims to provide an anaerobic treatment method for wastewater that can reduce the ammonia concentration in an anaerobic reactor when treating wastewater containing high concentration nitrogen compounds. purpose.
［課題を解決するための手段］
本発明は、上記目的を達成するために、高濃度窒素化合
物を含む廃水を嫌気性リアクタ内に導入し、これを嫌気
性微生物で廃水処理する廃水の嫌気性処理方法において
、上記嫌気性リアクタ内で生じるアンモニアを含む処理
液の一部をアンモニア放散リアクタに導入し、この処理
液を空気と接触させて液中のアンモニアを放散させた後
、この液を嫌気性リアクタに戻すようにしたものである
。[Means for Solving the Problems] In order to achieve the above object, the present invention introduces wastewater containing highly concentrated nitrogen compounds into an anaerobic reactor, and processes the wastewater with anaerobic microorganisms. In the treatment method, a part of the treatment liquid containing ammonia produced in the anaerobic reactor is introduced into an ammonia dispersion reactor, the treatment liquid is brought into contact with air to diffuse ammonia in the liquid, and then the liquid is anaerobically It was designed to be returned to the sexual reactor.
［作用］
高濃度窒素化合物を含む廃水を嫌気性リアクタ内に導入
すると、廃水は嫌気性微生物で処理される。ところが、
嫌気性リアクタ内で窒素化合物がアンモニアに変換し、
このアンモニアの大部分かがりアクタ内の液に溶解する
ことにより、アンモニアが嫌気性微生物に阻害作用を及
ぼす、そこで、嫌気性リアクタ内の処理液の一部をアン
モニア放散リアクタに導入し、この処理液を空気と接触
させて液中のアンモニアを放散させた後、この液を嫌気
性リアクタに戻すことにより、嫌気性リアクタ内のアン
モニア濃度を低減させることができ、アンモニアによる
嫌気性微生物の阻害作用を弱めることができる。[Operation] When wastewater containing highly concentrated nitrogen compounds is introduced into an anaerobic reactor, the wastewater is treated with anaerobic microorganisms. However,
Nitrogen compounds are converted to ammonia in the anaerobic reactor,
By dissolving most of this ammonia in the liquid in the anaerobic reactor, ammonia exerts an inhibitory effect on anaerobic microorganisms.Therefore, a part of the treated liquid in the anaerobic reactor is introduced into the ammonia dispersion reactor, and the treated liquid is By bringing the liquid into contact with air to dissipate the ammonia in the liquid, and then returning this liquid to the anaerobic reactor, the ammonia concentration in the anaerobic reactor can be reduced, and the inhibitory effect of ammonia on anaerobic microorganisms can be reduced. It can be weakened.
［実施例］ 本発明の好適実施例を添付図面に基づいて説明する。[Example] Preferred embodiments of the present invention will be described based on the accompanying drawings.
第１図は、本発明に係る廃水の嫌気性処理方法を実施す
るために採用する装置の第１の実施例を示すものである
。第１図に示すように、タンパク質等の窒素化合物の濃
度が高い（廃水中の窒素分としての濃度が１０００ ｕ
／Ｊ１以上）廃水の流入配管１には、この廃水を処理原
水として貯溜するための原水調整槽２が接続されている
。この原水調整槽２には、原水ポンプ３が取付けられた
原水配管４を介して嫌気性リアクタ５が接続され、原水
ポンプ３によって原水調整槽２の廃水を嫌気性リアクタ
５に送るようになっている。FIG. 1 shows a first embodiment of an apparatus employed to carry out the method for anaerobic treatment of wastewater according to the present invention. As shown in Figure 1, the concentration of nitrogen compounds such as proteins is high (the concentration of nitrogen in wastewater is 1000 u
/J1 and above) A raw water adjustment tank 2 for storing the waste water as treated raw water is connected to the waste water inflow pipe 1. An anaerobic reactor 5 is connected to this raw water adjustment tank 2 via a raw water pipe 4 to which a raw water pump 3 is attached, and the raw water pump 3 sends wastewater from the raw water adjustment tank 2 to the anaerobic reactor 5. There is.
嫌気性リアクタ５は、送られてきた廃水中の有機物質を
嫌気性微生物によってメタンガスや炭酸ガス等のバイオ
ガスに分解消化して廃水処理を行うように構成されてい
る０例えば、嫌気性リアクタ５内に砕石や合成樹脂等の
充填層（図示せず）が形成され、この充填層内を廃水が
透過すると、充填層に廃水中の有機物質が付着してその
有機物質を嫌気性微生物が分解消化する。この嫌気性リ
アクタ５の上部には、リアクタ５内に発生するバイオガ
スを取出すためのバイオガス配管６が接続されてい番と
共に、上方には処理後の水が導入される返送水取水配管
８が接続されている。この返送水取水配管８はアンモニ
ア放散リアクタ９に接続され、嫌気性リアクタ５内の処
理水が返送水取水配管８を介してアンモニア放散リアク
タ９に入り、そこからリアクタ９の上方の流出配管７に
流出するようになっている。The anaerobic reactor 5 is configured to perform wastewater treatment by decomposing and digesting organic substances in the wastewater sent to it into biogas such as methane gas and carbon dioxide using anaerobic microorganisms. A packed bed (not shown) of crushed stone, synthetic resin, etc. is formed inside the tank, and when wastewater permeates through this packed bed, organic substances in the wastewater adhere to the packed bed and are decomposed by anaerobic microorganisms. Digest. A biogas pipe 6 is connected to the top of the anaerobic reactor 5 to take out the biogas generated in the reactor 5, and a return water intake pipe 8 is connected above to introduce the water after treatment. It is connected. This return water intake pipe 8 is connected to an ammonia dispersion reactor 9, and the treated water in the anaerobic reactor 5 enters the ammonia dispersion reactor 9 via the return water intake pipe 8, and from there to the outflow pipe 7 above the reactor 9. It's starting to leak out.
また、上記アンモニア放散リアクタ９は、嫌気性リアク
タ５に対して容量が１７１０の以下に形成され、下部に
空気供給管１０が接続されると共に上部に空気排出管１
１が接、続され、空気によってリアクタ９内の水に溶解
しているアンモニアが放散するように構成されている。The ammonia dissipation reactor 9 is formed to have a capacity of 1710 or less with respect to the anaerobic reactor 5, and has an air supply pipe 10 connected to the lower part and an air discharge pipe 1 to the upper part.
1 is connected, and the ammonia dissolved in the water in the reactor 9 is dissipated by air.
なお、アンモニア放散リアクタは、リアクタ内の水をブ
ロワで曝気したり機械式曝気する形式あるいは好気性固
定床や散水ｒ床の形式でもよく、空気によって水からア
ンモニアを放散できればどのような形式でもよい。Note that the ammonia dispersion reactor may be of a type in which the water in the reactor is aerated with a blower or mechanically aerated, or may be of an aerobic fixed bed or sprinkler bed type, and may be of any type as long as it can diffuse ammonia from water with air.
そのアンモニア放散リアクタ９の下部は、返送ボンダ１
２が取付けられた返送配管１３を介して上記原水調整槽
２に接続されるか、又は図の一点線で示すように、循環
ポンプ１４が取付けられた循環配管１５を介して原水配
管４に接続され、返送ポンプ１２又は循環ポンプ１４に
よってアンモニア放散リアクタ９の水を嫌気性リアクタ
５に戻すようになっている。The lower part of the ammonia dissipation reactor 9 is a return bonder 1.
2 is connected to the raw water adjustment tank 2 through the return piping 13 to which the pump 2 is attached, or to the raw water piping 4 through the circulation piping 15 to which the circulation pump 14 is attached, as shown by the dotted line in the figure. The water in the ammonia dispersion reactor 9 is returned to the anaerobic reactor 5 by the return pump 12 or the circulation pump 14.
次に本実施例の廃水の嫌気性処理方法について説明する
。Next, the anaerobic treatment method for wastewater according to this embodiment will be explained.
タンパク質等の窒素化合物の濃度が高い（廃水中の窒素
分としての濃度が１０００ ＋１１Ｊ／Ｊ以上）廃水を
、流入配管１から原水調整槽２に貯溜させ、原水ポンプ
３によって原水配管４を介して嫌気性リアクタ５に送る
。Wastewater with a high concentration of nitrogen compounds such as proteins (the concentration of nitrogen in the wastewater is 1000 + 11 J/J or more) is stored in the raw water adjustment tank 2 from the inflow pipe 1, and is pumped through the raw water pipe 4 by the raw water pump 3. Send to anaerobic reactor 5.
嫌気性リアクタ５に送られた廃水は、リアクタ５内の充
填層内を透過し、その充填層に廃水中の有機物質が付着
して嫌気性微生物によってメタンガスや炭酸ガス等のバ
イオガスに分解消化されて廃水処理が行われ、処理水が
リアクタ５の上方から排出され、返送水取水配管８及び
アンモニア放散リアクタ９を介して流出配管７に流出す
る。なお、アンモニア放散リアクタでは実質的処理はす
すまないようになっている。一方、嫌気性リアクタ５内
に発生するバイオガスは、リアクタ５から排出されバイ
オガス配管６を介してガスホルダ等に至る。The wastewater sent to the anaerobic reactor 5 passes through the packed bed inside the reactor 5, and organic substances in the wastewater adhere to the packed bed and are decomposed and digested by anaerobic microorganisms into biogas such as methane gas and carbon dioxide gas. The treated water is discharged from above the reactor 5 and flows out to the outflow pipe 7 via the return water intake pipe 8 and the ammonia dispersion reactor 9. It should be noted that the ammonia dissipation reactor does not allow substantial treatment to proceed. On the other hand, biogas generated in the anaerobic reactor 5 is discharged from the reactor 5 and reaches a gas holder etc. via the biogas piping 6.
また、嫌気性リアクタ５内では、廃水中の窒素化合物は
アンモニアに変換し、このアンモニアが大部分りアクタ
５内の水に溶解するために、嫌気性リアクタ５内のアン
モニア濃度が高くなると共に、有機体炭素の多くは炭酸
ガスに変換し、この炭酸カスもリアクタ５内の水に溶解
する。Furthermore, in the anaerobic reactor 5, nitrogen compounds in the wastewater are converted to ammonia, and most of this ammonia is dissolved in the water in the anaerobic reactor 5, so that the ammonia concentration in the anaerobic reactor 5 increases. Most of the organic carbon is converted into carbon dioxide gas, and this carbon dioxide residue is also dissolved in the water in the reactor 5.
そこで、炭酸ガスとアンモニアが溶解した処理水の一部
を返送水取水配管８を介してアンモニア放散リアクタ９
に流入させる。そしてアンモニア放散リアクタ９内に流
入した水に、空気供給管１０からの空気を接触させると
、水に溶解している炭酸ガスの一部が放散し、水のＰＨ
が上昇する。Therefore, a portion of the treated water in which carbon dioxide gas and ammonia have been dissolved is returned to the ammonia dispersion reactor 9 via the water intake pipe 8.
to flow into. When the air from the air supply pipe 10 is brought into contact with the water that has flowed into the ammonia dispersion reactor 9, a part of the carbon dioxide gas dissolved in the water is dissipated, and the pH of the water increases.
rises.
すると、リアクタ９の水のアンモニアの溶解度が下がる
ので、アンモニアの一部も放敗し、アンモニア放散リア
クタ９のアンモニアの濃度が低くなる０例えば、アンモ
ニア放散リアクタ内を曝気した場合を下表に示す。Then, the solubility of ammonia in the water in the reactor 9 decreases, so some of the ammonia also evaporates, and the concentration of ammonia in the ammonia dissipation reactor 9 decreases. .
よって、アンモニア放散リアクタ９は、アルカリ等の薬
剤や触媒を用いないでも、空気によってアンモニア濃度
を低くさせることができる。また、アンモニア放散リア
クタ９内の空気や水から放散したアンモニア等は、排ガ
スとしてリアクタ９から排出され空気排出管１１に入る
ので、この排ガスを好気性廃水処理装置の曝気等に用い
ることができる。なお、空気排出管はブロワで吸引する
形式でも、自然通風でも良い。Therefore, the ammonia dispersion reactor 9 can lower the ammonia concentration using air without using a chemical such as an alkali or a catalyst. Furthermore, ammonia and the like diffused from the air and water in the ammonia dispersion reactor 9 are discharged from the reactor 9 as exhaust gas and enter the air exhaust pipe 11, so this exhaust gas can be used for aeration of the aerobic wastewater treatment device. Note that the air exhaust pipe may be of a type that uses a blower for suction, or may be of a type that uses natural ventilation.
そして、アン上ニア放散りアクタ９でアンモニア濃度が
低くなった水を、返送ポンプ１２によって返送配管１３
を介して原水調整槽２に送り、そこから嫌気性リアクタ
５内に戻す、又は、上記水を、循環ポンプ１４によって
循環配管１５及び原水配管４を介して嫌気性リアクタ５
に戻す、いずれにせよ、アンモニア濃度が低くなった水
を嫌気性リアクタ５内に戻すことになるので、嫌気性リ
アクタ５の水にアンモニア濃度の低い水が流入する。こ
のため、リアクタ５のアンモニア濃度が高い水は希釈寄
れることになり、アンモニア濃度を低減させることがで
きる。なお、嫌気性リアクタに戻されるアンモニア放散
りアクタの水は、嫌気性リアクタ内の水を十分に希釈で
きる程度にアンモニア濃度が低くなっている。Then, the water whose ammonia concentration has been lowered by the ammonia dispersion actor 9 is sent to the return piping 13 by the return pump 12.
The water is sent to the raw water adjustment tank 2 through the water and returned to the anaerobic reactor 5 from there, or the water is sent to the anaerobic reactor 5 via the circulation pipe 15 and the raw water pipe 4 by the circulation pump 14.
In any case, the water with a low ammonia concentration is returned to the anaerobic reactor 5, so the water with a low ammonia concentration flows into the water of the anaerobic reactor 5. Therefore, water with a high ammonia concentration in the reactor 5 can be diluted, and the ammonia concentration can be reduced. Note that the ammonia concentration of the water from the ammonia dispersion actor that is returned to the anaerobic reactor is low enough to sufficiently dilute the water in the anaerobic reactor.
上述のように、嫌気性リアクタ５のアンモニア濃度の高
い処理水の一部をアンモニア放散リアクタ９でアンモニ
ア濃度が低くなった水にさせ、この水を嫌気性リアクタ
５に戻して、嫌気性リアクタ５のアンモニア濃度を低減
させることにより、嫌気性リアクタ５内のアンモニアに
よる嫌気性微生物の阻害を弱くさせることができる。こ
のため、嫌気性微生物の阻害が弱くなると、嫌気性リア
クタ５内の嫌気性微生物は十分に廃水の処理を行うこと
ができるので、嫌気性リアクタ５の処理能力を向上させ
ることができる。As described above, a part of the treated water with a high ammonia concentration in the anaerobic reactor 5 is made into water with a low ammonia concentration in the ammonia dispersion reactor 9, and this water is returned to the anaerobic reactor 5. By reducing the ammonia concentration in the anaerobic reactor 5, inhibition of anaerobic microorganisms by ammonia in the anaerobic reactor 5 can be weakened. Therefore, when the inhibition of anaerobic microorganisms becomes weaker, the anaerobic microorganisms in the anaerobic reactor 5 can sufficiently treat wastewater, so that the processing capacity of the anaerobic reactor 5 can be improved.
第２図は、第２の実施例を示すものである。この実権例
の第１の実施例と異なるところは、嫌気性リアクタ５ａ
の上方に流１１配管７ａが直接接続され、嫌気性リアク
タ５ａの処理水が直接流出するようにしであることであ
る。このように梢成することで、従来の嫌気性リアクタ
の上澄水を原水調整槽あるいは嫌気性リアクタに返送す
る場合の配管にアンモニア放散リアクタを設けるだけで
本発明を実施することができる。FIG. 2 shows a second embodiment. This actual example differs from the first example in that the anaerobic reactor 5a
The flow 11 piping 7a is directly connected above the anaerobic reactor 5a so that the treated water of the anaerobic reactor 5a directly flows out. With this arrangement, the present invention can be carried out simply by providing an ammonia dissipation reactor in the piping for returning the supernatant water of the conventional anaerobic reactor to the raw water adjustment tank or the anaerobic reactor.
第３図は、第３の実施例を示すものである。この実施例
の第１の実施例と異なるところは、嫌気性リアクタ５ｂ
の上方に流出配管７ｂが直接接続されていると共に、嫌
気性リアクタらｂの流出配管７ｂが接続されている位置
より下方の適宜の位置に、返送ボン１１６が取付けられ
た返送水取水配管１７が接続され、かつアンモニア放散
リアクタ９ｂの下方に返送配管１３ｂ又は循環配管１５
ｂが接続されているところである。このように構成する
ことで、返送ポンプ１６によってアンモニア放散リアク
タ９ｂの水位を調節できると共に、返送配管１３ｂ及び
循環配管１５ｂを介して嫌気性リアクタ５ｂ内に戻す流
量を調整できる。FIG. 3 shows a third embodiment. The difference between this embodiment and the first embodiment is that the anaerobic reactor 5b
An outflow pipe 7b is directly connected to the upper part, and a return water intake pipe 17 with a return bong 116 attached is located at an appropriate position below the position where the outflow pipe 7b of the anaerobic reactor b is connected. The return piping 13b or the circulation piping 15 is connected to the lower part of the ammonia dispersion reactor 9b.
b is connected. With this configuration, the water level of the ammonia dispersion reactor 9b can be adjusted by the return pump 16, and the flow rate returned into the anaerobic reactor 5b via the return pipe 13b and the circulation pipe 15b can be adjusted.
第４図及び第５図は、第１図及び第２図のそれぞれの変
形例を示すものであり、これら変形例は、空気供給管１
０．１０ａの空気量を絞り、空気排出管１１．Ｌｌａを
ブロワ、で吸引するようにする。4 and 5 show modifications of FIGS. 1 and 2, respectively, and these modifications include the air supply pipe 1.
Reduce the amount of air to 0.10a, and connect the air exhaust pipe 11. Make sure to suck up Lla with a blower.
また、流出配管７，７ａの接続位置を、アンモニア放散
リアクタ９，９ａあるいは嫌気性リアクタ５．５ａの水
位より低く接続させ、かつ空気排出管１１．ｌｌａをブ
ロワで吸引した場合、流出配管７，７ａからガスがアン
モニア放散リアクタ９゜９ａおよび嫌気性リアクタ５．
５ａ内に導入しないように、流出配管７，７ａを、アン
モニア放散リアクタ９′！、たは嫌気性リアクタ５ａの
接続位置から立ち上げて処理水が流出するようにさせる
。Further, the connection positions of the outflow pipes 7, 7a are connected lower than the water level of the ammonia dissipation reactors 9, 9a or the anaerobic reactor 5.5a, and the air discharge pipes 11. When lla is suctioned by a blower, gas flows from the outflow pipes 7 and 7a to the ammonia diffusion reactor 9.9a and the anaerobic reactor 5.
5a, the outflow pipes 7, 7a are connected to the ammonia dispersion reactor 9'! , or from the connection position of the anaerobic reactor 5a to allow treated water to flow out.
さらに、返送水取水配管８，８ａの接続位置を嫌気性リ
アクタ５，５ａとアンモニア放散リアクタ９．９ａの水
位より低く接続させる。このようにすれば、アンモニア
放散リアクタ９，９ａの水位が流出配管７．７ａ及び返
送水取水配管８．８ａの接続位置より高くなり、空気排
出管１１゜１１ａをブロワで吸引させると、アンモニア
放散リアクタ９，９ａ内の気圧が下がるので、リアクタ
９．９ａ内の水と空気の接触が活性化されてアンモニア
の放散を一層容易にさせることができる。Further, the connection positions of the return water intake pipes 8 and 8a are connected to be lower than the water level of the anaerobic reactors 5 and 5a and the ammonia dispersion reactor 9.9a. In this way, the water level in the ammonia dissipation reactors 9, 9a will be higher than the connection position of the outflow pipe 7.7a and the return water intake pipe 8.8a, and when the air discharge pipe 11°11a is sucked with a blower, ammonia will be dissipated. Since the air pressure inside the reactors 9, 9a is reduced, the contact between the water and the air inside the reactor 9, 9a is activated, and the ammonia can be more easily dissipated.
なお、返送ボンフ゛又は循環ポンプをアンモニア放散り
アクタの下？Ｍ側に設けてアンモニア放散リアクタから
嫌気性リアクタに戻す水量を調節するようにしたので、
嫌気性リアクタとアンモニア放散リアクタの水位はほぼ
等しくなる。このため、アンモニア放散リアクタは散水
炉床の形式を使用できない。Also, is the return bomb or circulation pump under the ammonia dissipating actor? Since it was installed on the M side to adjust the amount of water returned from the ammonia dissipation reactor to the anaerobic reactor,
The water levels in the anaerobic reactor and the ammonia dissipation reactor become approximately equal. For this reason, the ammonia dissipation reactor cannot use the sprinkler hearth format.
第６図は、第３図の変形例を示すものであり、この変形
例は、空気供給管ｔａｂの空気量を絞り、アンモニア放
散リアクタ９ｂから原水調整槽２ｂへの水の自然流下が
可能な程度に空気排出管１１ｂをブロワで吸引するよう
にする。このようにすれば、アンモニア放散リアクタ９
ｂ内の気圧が下がるので、リアクタ９ｂ内の水と空気の
接触が活性化されてアンモニアの放散を一層容易にさせ
ることができる。FIG. 6 shows a modification of FIG. 3, in which the amount of air in the air supply pipe tab is throttled to allow natural flow of water from the ammonia dissipation reactor 9b to the raw water adjustment tank 2b. The air exhaust pipe 11b is suctioned with a blower to a certain extent. In this way, the ammonia dissipation reactor 9
Since the air pressure in reactor 9b decreases, contact between water and air in reactor 9b is activated, making it easier to dissipate ammonia.
なお、空気供給管１０．１０ａまたは１０ｂから供給す
る空気の代わりに他の廃ガスを用いてもよい。Note that other waste gas may be used instead of the air supplied from the air supply pipe 10.10a or 10b.
［発明の効果１
以上要するに本発明によれば、嫌気性リアクタ内で生じ
るアンモニアを含む処理液の一部から液中のアンモニア
を放散させた後、この液を嫌気性リアクタに戻すように
したことにより、嫌気性リアクタ内のアンモニア濃度か
低減でき、アンモニアによる微生物の阻害作用が弱まる
ので、嫌気性リアクタの処理能力を向上できるという潰
れた効果を発揮する。[Effect of the invention 1] In short, according to the present invention, after ammonia in the liquid is diffused from a part of the ammonia-containing treatment liquid generated in the anaerobic reactor, this liquid is returned to the anaerobic reactor. As a result, the ammonia concentration within the anaerobic reactor can be reduced, and the microbial inhibitory effect of ammonia is weakened, so the processing capacity of the anaerobic reactor can be improved.
第１図は本発明の第１の実施例を示す構成図、第２図は
本発明の第２の実施例を示す構成図、第３図は本発明の
第３の実施例を示す構成図、第４図は第１図の変形例を
示す構成図、第５図は第２図の変形例を示す構成図、第
６図は第３図の変形例を示す構成図、第７図は従来例を
示す構成図であるＪ
図中、５．５ａ、５ｂは嫌気性リアクタ、９゜９ａ、９
ｂはアンモニア放散リアクタである。
第
１図
第２図
第５図
第６図
９０、アンモニア第２電ｔす７２り
第３図
第４図Fig. 1 is a block diagram showing a first embodiment of the present invention, Fig. 2 is a block diagram showing a second embodiment of the present invention, and Fig. 3 is a block diagram showing a third embodiment of the present invention. , FIG. 4 is a block diagram showing a modification of FIG. 1, FIG. 5 is a block diagram showing a modification of FIG. 2, FIG. 6 is a block diagram showing a modification of FIG. 3, and FIG. 7 is a block diagram showing a modification of FIG. J is a configuration diagram showing a conventional example. In the figure, 5.5a and 5b are anaerobic reactors, 9°9a, 9
b is an ammonia dissipation reactor. Fig. 1 Fig. 2 Fig. 5 Fig. 6 Fig. 90, Ammonia 2nd electricity
Claims (1)
導入し、これを嫌気性微生物で廃水処理する廃水の嫌気
性処理方法において、上記嫌気性リアクタ内で生じるア
ンモニアを含む処理液の一部をアンモニア放散リアクタ
に導入し、この処理液を空気と接触させて液中のアンモ
ニアを放散させた後、この液を嫌気性リアクタに戻すよ
うにしたことを特徴とする廃水の嫌気性処理方法。1. In an anaerobic wastewater treatment method in which wastewater containing highly concentrated nitrogen compounds is introduced into an anaerobic reactor and treated with anaerobic microorganisms, a portion of the treated liquid containing ammonia generated in the anaerobic reactor. A method for anaerobic treatment of wastewater, characterized in that the treated liquid is introduced into an ammonia diffusion reactor, the treated liquid is brought into contact with air to diffuse the ammonia in the liquid, and then the liquid is returned to the anaerobic reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1073867A JPH02253898A (en) | 1989-03-28 | 1989-03-28 | Anaerobic treatment of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1073867A JPH02253898A (en) | 1989-03-28 | 1989-03-28 | Anaerobic treatment of waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02253898A true JPH02253898A (en) | 1990-10-12 |
Family
ID=13530562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1073867A Pending JPH02253898A (en) | 1989-03-28 | 1989-03-28 | Anaerobic treatment of waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02253898A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06178995A (en) * | 1992-12-14 | 1994-06-28 | Ebara Infilco Co Ltd | Anaerobic digestion treatment of organic waste water |
| JP2002273489A (en) * | 2001-03-21 | 2002-09-24 | Mitsubishi Heavy Ind Ltd | Treatment method of liquid organic waste and system for the same |
| JP2006000791A (en) * | 2004-06-18 | 2006-01-05 | Fuji Xerox Co Ltd | Wastewater treatment method |
| JP2008100151A (en) * | 2006-10-18 | 2008-05-01 | Kobelco Eco-Solutions Co Ltd | Organic wastewater treatment method and organic waste water treatment device |
| JP2009522095A (en) * | 2006-01-05 | 2009-06-11 | バイオタン システムズ インターナショナル ビー．ブイ． | Method and reactor for anaerobic wastewater purification |
| JP2009522096A (en) * | 2006-01-05 | 2009-06-11 | バイオタン システムズ インターナショナル ビー．ブイ． | Method and reactor for anaerobic wastewater purification |
| JP2010006686A (en) * | 2008-05-29 | 2010-01-14 | National Agriculture & Food Research Organization | Nitrogen extraction/fixation for methane-fermented/digested liquid, device therefor, product produced by the method, recovery method for the product and recovery system therefor |
| JP2011098344A (en) * | 2010-12-24 | 2011-05-19 | Kobelco Eco-Solutions Co Ltd | Organic wastewater treatment method and organic wastewater treatment apparatus |
-
1989
- 1989-03-28 JP JP1073867A patent/JPH02253898A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06178995A (en) * | 1992-12-14 | 1994-06-28 | Ebara Infilco Co Ltd | Anaerobic digestion treatment of organic waste water |
| JP2002273489A (en) * | 2001-03-21 | 2002-09-24 | Mitsubishi Heavy Ind Ltd | Treatment method of liquid organic waste and system for the same |
| JP4558231B2 (en) * | 2001-03-21 | 2010-10-06 | 三菱重工環境・化学エンジニアリング株式会社 | Method and system for treating liquid organic waste |
| JP2006000791A (en) * | 2004-06-18 | 2006-01-05 | Fuji Xerox Co Ltd | Wastewater treatment method |
| JP4529554B2 (en) * | 2004-06-18 | 2010-08-25 | 富士ゼロックス株式会社 | Wastewater treatment method |
| JP2009522095A (en) * | 2006-01-05 | 2009-06-11 | バイオタン システムズ インターナショナル ビー．ブイ． | Method and reactor for anaerobic wastewater purification |
| JP2009522096A (en) * | 2006-01-05 | 2009-06-11 | バイオタン システムズ インターナショナル ビー．ブイ． | Method and reactor for anaerobic wastewater purification |
| US8021552B2 (en) | 2006-01-05 | 2011-09-20 | Veolia Water Solutions & Technologies Support | Process and reactor for anaerobic waste water purification |
| US8043506B2 (en) | 2006-01-05 | 2011-10-25 | Biothane Systems International B.V. | Process and reactor for anaerobic waste water purification |
| JP2008100151A (en) * | 2006-10-18 | 2008-05-01 | Kobelco Eco-Solutions Co Ltd | Organic wastewater treatment method and organic waste water treatment device |
| JP2010006686A (en) * | 2008-05-29 | 2010-01-14 | National Agriculture & Food Research Organization | Nitrogen extraction/fixation for methane-fermented/digested liquid, device therefor, product produced by the method, recovery method for the product and recovery system therefor |
| JP2011098344A (en) * | 2010-12-24 | 2011-05-19 | Kobelco Eco-Solutions Co Ltd | Organic wastewater treatment method and organic wastewater treatment apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MY115443A (en) | Apparatus and method for waste water treatment utilizing aerobic and anaerobic microorganisms | |
| JPH02253898A (en) | Anaerobic treatment of waste water | |
| JP3275351B2 (en) | Anaerobic treatment of organic wastewater | |
| JP2009154131A (en) | Apparatus for removing dissolved hydrogen sulfide in anaerobic treatment | |
| JP2002292393A (en) | Apparatus and method for methane fermentation | |
| JP3234786B2 (en) | Method and apparatus for treating sulfate-containing organic wastewater | |
| JP2001038378A (en) | Method and device for anaerobically treating organic waste water | |
| JP2007190492A (en) | Method and apparatus for treating nitrogen-containing wastewater | |
| JP3959843B2 (en) | Biological treatment method for organic drainage | |
| KR100945055B1 (en) | Process system of liquid food waste mandarin by-product and its process method | |
| JPS6324000Y2 (en) | ||
| JPH07204682A (en) | Anaerobic water treatment apparatus | |
| JP2007190491A (en) | Method and apparatus for treating nitrogen-containing wastewater | |
| MY126466A (en) | Apparatus for treating organic wastewater | |
| JP3394157B2 (en) | Method and apparatus for treating organic waste liquid | |
| CN111886206A (en) | Sludge discharge control device, water treatment system, and sludge discharge control method | |
| JPH03249999A (en) | Treatment of sludge | |
| JP5329499B2 (en) | Biological wastewater treatment equipment | |
| KR20040013522A (en) | Sewage and wastewater treatment process and facilities | |
| JP3838628B2 (en) | Organic wastewater treatment method and treatment apparatus | |
| JP2000229298A (en) | Anaerobic waste water treating system | |
| JPH02203994A (en) | Device for treating acid fermenter produced gas in two-phase methane fermentation apparatus | |
| JPS6388099A (en) | Pretreatment in methane fermenting method | |
| JPS6372398A (en) | Treatment of waste water | |
| JPH0299198A (en) | Solid-liquid separation in anaerobic biological treatment |