JPS6021796B2 - Anaerobic treatment method for organic waste liquid - Google Patents
Anaerobic treatment method for organic waste liquidInfo
- Publication number
- JPS6021796B2 JPS6021796B2 JP57138875A JP13887582A JPS6021796B2 JP S6021796 B2 JPS6021796 B2 JP S6021796B2 JP 57138875 A JP57138875 A JP 57138875A JP 13887582 A JP13887582 A JP 13887582A JP S6021796 B2 JPS6021796 B2 JP S6021796B2
- Authority
- JP
- Japan
- Prior art keywords
- organic waste
- waste liquid
- anaerobic treatment
- production reaction
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Description
【発明の詳細な説明】
本発明は、有機性廃液を嫌気的に処理する方法に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for anaerobically treating organic waste liquid.
最近のエネルギー事情から、し尿、下水あるいはそれら
の処理場などに存在する高濃度有機性廃液や各種の工場
などから排出される有機性廃液、余剰汚泥、その他の有
機性廃棄物（以下これらを単に「有機性廃液」という）
を好気性処理に代え、ブロワーなどの使用を伴なわない
ランニングコストの安い処理法として、嫌気性処理法が
注目されている。Due to the recent energy situation, human waste, sewage, highly concentrated organic waste liquids present in their treatment plants, organic waste liquids discharged from various factories, surplus sludge, and other organic wastes (hereinafter simply referred to as these) (referred to as “organic waste liquid”)
Anaerobic treatment is attracting attention as a low-running treatment method that does not require the use of blowers or the like, instead of aerobic treatment.
この嫌気性（消化）処理は、汚泥の発生量が少なく、ま
たメタンガスとしてエネルギー回収することができる利
点を持っている。さらに、この嫌気性処理も、先ず有機
性廃液中の有機物を嫌気性液化菌群（腐敗菌群）の作用
により酢酸、プロピオン酸、酪酸などの揮発性有機酸に
する酸生成反応と、これら生成した有機酸がメタン生成
菌によって、メタンに転換するガス化反応（メタン生成
反応）の、二相に分けた二相隣気性（消化）処理法が提
案されている。この二相嫌気性処理法は、従釆の一槽内
で消化を行う標準的消化法に比べ、処理効果が高いこと
が知られている。This anaerobic (digestion) treatment has the advantage of generating less sludge and being able to recover energy as methane gas. Furthermore, this anaerobic treatment also involves an acid-producing reaction that first converts organic matter in organic waste into volatile organic acids such as acetic acid, propionic acid, and butyric acid through the action of anaerobic liquefaction bacteria (septic bacteria), and then A two-phase aerobic (digestion) treatment method has been proposed in which the gasification reaction (methane production reaction) in which the organic acid produced is converted into methane by methanogenic bacteria is divided into two phases. This two-phase anaerobic treatment method is known to be more effective than the standard digestion method, which performs digestion in a single tank.
本発明者らは、上述の酸生成反応と、それに続くメタン
生成反応をさらに詳細に研究したところ、硫酸塩還元菌
を利用することによって、嫌気性処理反応をより促進さ
せる知見を得ることができ、これによって、さらに処理
効率の優れた有機性廃液の嫌気性処理法を得ることに成
功した。The present inventors conducted a more detailed study of the above-mentioned acid production reaction and the subsequent methane production reaction, and found that by using sulfate-reducing bacteria, the anaerobic treatment reaction could be further promoted. As a result, we succeeded in obtaining an anaerobic treatment method for organic wastewater with even better treatment efficiency.
すなわち、本発明は、有機性廃液を酸生成反応とメタン
生成反応の二相に分けた二相嫌気性処理法によって処理
するに際し、酸生成反応をィオウ酸化物を添加してィオ
ウ酸化物の存在下で処理することを特徴とするものであ
る。上述したように、有機性廃液の嫌気性処理法におい
ては、酸生成反応とメタン生成反応を有している。That is, in the present invention, when an organic waste liquid is treated by a two-phase anaerobic treatment method that is divided into two phases, an acid production reaction and a methane production reaction, sulfur oxides are added to the acid production reaction to eliminate the presence of sulfur oxides. It is characterized by being processed below. As mentioned above, the anaerobic treatment method for organic waste liquid includes an acid production reaction and a methane production reaction.
このうち、酸生成反応において生成される酢酸以外の酸
、例えばプロピオン酸などは、メタン生成菌によってメ
タンへ転換される速度が遅く、いわゆる反応律速となっ
ている。したがって、プロピオン酸、酪酸あるいは乳酸
などを、酢酸までに分解しておくことが処理効率を高め
る要因である。これらプロピオン酸などを酢酸に酸化分
解するには、硫酸塩還元細菌が好適である。硫酸塩還元
菌としては、デスルホビブリオ（戊ｓのｆｏｖｉｂｒｉ
ｏ）、デ ス ル ホ マ ク ラ ム（Ｄｅｓ山ｆｏ
ｍａｃｕｌｕｍ）などが知られている。Among these, acids other than acetic acid produced in the acid production reaction, such as propionic acid, are converted to methane by methanogens at a slow rate, which is the so-called rate-limiting reaction. Therefore, decomposing propionic acid, butyric acid, lactic acid, etc. into acetic acid is a factor that increases processing efficiency. Sulfate-reducing bacteria are suitable for oxidatively decomposing these propionic acids and the like into acetic acid. Examples of sulfate-reducing bacteria include Desulfovibrio
o)
maculum), etc. are known.
これら細菌は、絶対嫌気性細菌であって、硫酸塩の結合
酸素を水素受容体として有機物を酸化分解する。しかし
、この反応は、一般に不完全で酢酸の形に蓄積する傾向
がある。また、ここで利用される硫酸塩としては、Ｓ戊
−．ＳＯ毒‐Ｓぬ蓋‐あるいはＳ４０暮−などのィオウ
酸化物があげられる。上述のプロピオン酸を硫酸塩還元
細菌による硫酸還元反応は、次式に示される。守りＣＨ
２ＣＯＯ−軌２０小２Ｃ０が。葦‐一念比ＣＯＯ‐十や
。２十日２Ｓ
十鼻ｏすＨｃｏ；＋敦Ｈ‐
以上の式から明らかなように、プロピオン酸は、酢酸ま
で分解される。These bacteria are obligate anaerobic bacteria and oxidize and decompose organic matter using the bound oxygen of sulfate as a hydrogen acceptor. However, this reaction is generally incomplete and tends to accumulate in the form of acetic acid. In addition, the sulfate used here includes S-. Examples include sulfur oxides such as SO poison (S) or S40. The above-mentioned sulfuric acid reduction reaction of propionic acid by sulfate-reducing bacteria is shown by the following equation. Protection CH
2COO-orbit 20 small 2C0. Ashi-Ichinenbi COO-Juya. 20 days 2S ten nose osu Hco; + Atsushi H- As is clear from the above formula, propionic acid is decomposed to acetic acid.
このときプロピオン酸４／３に対し、硫酸イオン１モル
を必要とする。有機性廃液を嫌気性処理するときのこの
硫酸イオンの添加量は、廃液中の有機性炭素に対し、０
．３〜３倍（モル比）以上の量を存在させることにより
、各種の有機酸を効果的に酢酸まで分解することができ
る。このような硫酸塩還元反応は、嫌気性処理工程の中
において行なわれるが、特に二相嫌気性処理法の酸生成
反応と同時に行なわせることができる。At this time, 1 mole of sulfate ion is required for 4/3 propionic acid. When organic waste liquid is treated anaerobically, the amount of sulfate ions added is 0 to the organic carbon in the waste liquid.
．． By presence of 3 to 3 times (molar ratio) or more amount, various organic acids can be effectively decomposed into acetic acid. Such a sulfate reduction reaction is carried out during the anaerobic treatment step, but in particular can be carried out simultaneously with the acid production reaction in the two-phase anaerobic treatment method.
つまり、酸生成反応槽に、硫酸イオンを上述した量添加
し、従釆の酸生成反応と同様に嫌気的に混合燈群するこ
とにより、有機物を酢酸の形までにすることが可能とな
る。この反応操作は、従来の酸生成反応と同じ条件でよ
く、また、これに続くメタン生成反応も従来どおりでよ
い。したがって、メタン生成槽においては、主として酢
酸をメタンに転換すればよいので、効果的にメタンガス
を得ることができる。本発明法によれば、すなわち、プ
ロピオン酸などを酢酸までに分解した場合は、従来のよ
うに、単に酸生成反応を経た有機酸を、メタンガスに転
換するためのメタン生成反応時間よりも２〜３割短縮す
ることが可能である。That is, by adding sulfate ions in the above amount to the acid production reaction tank and anaerobically mixing the mixture in the same way as in the secondary acid production reaction, it is possible to convert organic matter to the form of acetic acid. This reaction operation may be performed under the same conditions as the conventional acid production reaction, and the subsequent methane production reaction may also be carried out as conventionally. Therefore, in the methane generation tank, it is sufficient to mainly convert acetic acid into methane, so that methane gas can be effectively obtained. According to the method of the present invention, in other words, when propionic acid is decomposed to acetic acid, the methane production reaction time required to simply convert the organic acid that has undergone the acid production reaction into methane gas is 2 to 30% longer than the conventional method. It is possible to shorten the time by 30%.
したがって、本発明によれば、処理反応槽の容量を小さ
くすることも可能となる。もちろん、本発明は、従来の
標準消化法にも適用可能であり、この場合も上述した二
相嫌気性処理法への適用したときと同様な効果を得るこ
とができる。Therefore, according to the present invention, it is also possible to reduce the capacity of the processing reaction tank. Of course, the present invention can also be applied to conventional standard digestion methods, and in this case as well, the same effects as when applied to the above-mentioned two-phase anaerobic treatment method can be obtained.
また、本発明法は、既設の消イ幻戦こ所定量のィオゥ酸
化物の添加手段を付加するだけで実施可能であり、この
点からも有用な発明である。Furthermore, the method of the present invention can be carried out by simply adding a means for adding a predetermined amount of sulfur oxide to an existing vanishing tank, and from this point of view as well, it is a useful invention.
実施例
混合蝿梓手段を有する酸生成反応槽（有効容積２０そ）
にし尿処理場から発生した余剰汚泥（固形物濃度２％（
Ｍ／ｗｔ））を有機物負荷０．８〜１．２ｋ９・ＢＯＤ
／〆・ｄで投入し、温度を３７℃、ｐＨを６．５に調整
しながら滞留時間１０〜１５日の条件で酸生成反応を行
った。Example Acid production reaction tank (effective volume: 20) having mixing means
Excess sludge generated from human waste treatment plants (solids concentration 2%)
M/wt)) with an organic load of 0.8 to 1.2k9・BOD
/d, and the acid production reaction was carried out under the conditions of residence time of 10 to 15 days while adjusting the temperature to 37° C. and pH to 6.5.
次ぎに、酸生成反応液を園液分離し、液分をメタン生成
槽に送り、温度３７℃、ｐＨを７．０に調整して滞留時
間５〜１０日でガス化を行なった。Next, the acid production reaction solution was separated into a liquid, and the liquid was sent to a methane production tank, where the temperature was adjusted to 37° C., the pH was adjusted to 7.0, and gasification was performed over a residence time of 5 to 10 days.
上述の酸生成反応槽に、苧硝（Ｎａ２Ｓ０４）を下表に
示す割合で存在させた。その存在割合は、有機性炭素Ｃ
に対し、硫酸イオンＳＯ葦−を所定割合（モル比）にな
るように行った。このときの有機物ＴＯＣＩｇ当りのメ
タンガス発生状態を下表に示す。※ 比較例を示す。Ramie salt (Na2S04) was made to exist in the acid production reaction tank described above in the proportions shown in the table below. Its abundance ratio is organic carbon C
On the other hand, sulfate ion SO reed was added in a predetermined ratio (molar ratio). The table below shows the state of methane gas generated per TOCIg of organic matter at this time. *Comparative example is shown.
以上の実施例から明らかなように、ィオゥ化合物を有機
性炭素に対し、一定以上存在させて消化処理を行うと、
メタン生成反応を速めることができる。As is clear from the above examples, when a sulfur compound is present in organic carbon at a certain level and the digestion process is performed,
It can speed up the methanogenesis reaction.
Claims (1)
分けた二相嫌気性処理法によつて処理するに際し、酸生
成反応をイオ酸化物を添加してイオウ酸化物の存在下で
処理することとを特徴とする有機性廃液の嫌気性処理法
。 ２ 有機性廃液の有機性炭素に対し硫酸イオンとして０
．３〜３倍（モル比）以上になる量を添加させることを
特徴とする特許請求の範囲第１項に記載した有機性廃液
の嫌気性処理法。[Claims] 1. When treating an organic waste liquid by a two-phase anaerobic treatment method that separates the organic waste into two phases: an acid production reaction and a methane production reaction, the acid production reaction is converted into sulfur oxidation by adding sulfur oxide. An anaerobic treatment method for organic waste liquid characterized by treatment in the presence of substances. 2 0 as sulfate ions for organic carbon in organic waste liquid
．． The method for anaerobic treatment of organic waste liquid according to claim 1, characterized in that the amount is added in an amount of 3 to 3 times (molar ratio) or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57138875A JPS6021796B2 (en) | 1982-08-10 | 1982-08-10 | Anaerobic treatment method for organic waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57138875A JPS6021796B2 (en) | 1982-08-10 | 1982-08-10 | Anaerobic treatment method for organic waste liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5929089A JPS5929089A (en) | 1984-02-16 |
| JPS6021796B2 true JPS6021796B2 (en) | 1985-05-29 |
Family
ID=15232148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57138875A Expired JPS6021796B2 (en) | 1982-08-10 | 1982-08-10 | Anaerobic treatment method for organic waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6021796B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01130196U (en) * | 1988-02-29 | 1989-09-05 | ||
| JPH02272599A (en) * | 1989-04-14 | 1990-11-07 | Naoyuki Yanai | Body synthesizer system and exclusive wear |
| JPH0347596U (en) * | 1989-09-14 | 1991-05-02 | ||
| JP2551066B2 (en) * | 1987-12-24 | 1996-11-06 | ヤマハ株式会社 | Musical sound generation control device |
-
1982
- 1982-08-10 JP JP57138875A patent/JPS6021796B2/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2551066B2 (en) * | 1987-12-24 | 1996-11-06 | ヤマハ株式会社 | Musical sound generation control device |
| JPH01130196U (en) * | 1988-02-29 | 1989-09-05 | ||
| JPH02272599A (en) * | 1989-04-14 | 1990-11-07 | Naoyuki Yanai | Body synthesizer system and exclusive wear |
| JPH0347596U (en) * | 1989-09-14 | 1991-05-02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5929089A (en) | 1984-02-16 |
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