JP2000061433A - Methane fermentation method - Google Patents
Methane fermentation methodInfo
- Publication number
- JP2000061433A JP2000061433A JP10231057A JP23105798A JP2000061433A JP 2000061433 A JP2000061433 A JP 2000061433A JP 10231057 A JP10231057 A JP 10231057A JP 23105798 A JP23105798 A JP 23105798A JP 2000061433 A JP2000061433 A JP 2000061433A
- Authority
- JP
- Japan
- Prior art keywords
- fermentation
- methane fermentation
- methane
- waste
- organic waste
- 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.)
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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
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、有機性廃棄物を再
資源化するためのメタン発酵方法に関する。TECHNICAL FIELD The present invention relates to a methane fermentation method for recycling organic waste.
【０００２】[0002]
【従来の技術】従来より有機性廃棄物の再資源化が図ら
れており、たとえば特開平９−２０１６９９号には、し
尿、浄化槽汚泥、下水汚泥、農集汚泥、家畜ふん尿、生
ごみ、食品廃棄物など、性状や濃度が異なる有機性廃棄
物を同一システムにおいて処理して有用物質を回収し、
資源化する方法が開示されている。2. Description of the Related Art Recycling of organic waste has been conventionally attempted. For example, Japanese Patent Laid-Open No. 9-201699 discloses human waste, septic tank sludge, sewage sludge, agricultural sludge, livestock excrement, food waste, food. Organic waste with different properties and concentrations, such as waste, is processed in the same system to collect useful substances,
A method for recycling is disclosed.
【０００３】この方法は、図２に示したようなものであ
り、し尿、浄化槽汚泥、農集汚泥、下水汚泥、家畜ふん
尿を除渣工程＃３１において除渣し、固液分離工程＃３
２において液状廃棄物３１と脱水汚泥３２とに分離し、
液状廃棄物３１は、生物処理工程＃３３でＢＯＤ分解並
びに必要に応じて脱窒素し、固液分離工程＃３４で浮遊
物を除去し、高度処理工程＃３５でＣＯＤや色素成分や
鉄・マンガンなどの重金属類を除去し、消毒して放流水
または再利用水としている。This method is as shown in FIG. 2, and human waste, septic tank sludge, agricultural sludge, sewage sludge and livestock excrement are removed in a removing step # 31, and a solid-liquid separation step # 3.
In 2, the liquid waste 31 and the dehydrated sludge 32 are separated,
The liquid waste 31 undergoes BOD decomposition and denitrification as necessary in the biological treatment step # 33, floats are removed in the solid-liquid separation step # 34, and COD, pigment components, iron and manganese in the advanced treatment step # 35. Heavy metals such as are removed and disinfected to be discharged water or reused water.
【０００４】生ごみや食品廃棄物は、破砕・分別工程＃
３６において破砕し、プラスチック袋やトレーなどを分
別した後に、上記した脱水汚泥３２と混合して、嫌気性
発酵工程＃３７においてメタン発酵させ、発生したメタ
ンガス３３を回収して、発電工程＃３８などにより電気
や熱の形態として使用に供するとともに、消化汚泥３４
を脱水工程＃３９で脱水汚泥３５とし、コンポスト化工
程＃４０などに送って肥料や固形燃料や乾燥汚泥として
回収しており、脱水濾液３６は生物処理工程＃３３へ送
って処理している。Garbage and food waste are crushed and separated.
After crushing at 36 and separating plastic bags, trays, etc., they are mixed with the above-mentioned dehydrated sludge 32, methane-fermented at anaerobic fermentation step # 37, and methane gas 33 generated is recovered to generate electricity at step # 38. It is used as a form of electricity and heat, and digested sludge 34
Is converted into dehydrated sludge 35 in the dehydration step # 39, sent to the composting step # 40 and the like to be recovered as fertilizer, solid fuel and dried sludge, and the dehydrated filtrate 36 is sent to the biological treatment step # 33 for treatment.
【０００５】[0005]
【発明が解決しようとする課題】ところで、微生物の生
育には一定濃度以上の溶解性の微量金属（Ｃｏ，Ｎｉ，
Ｆｅ，Ｍｎ等）が必要であるが、メタン発酵の際に、原
料中に含まれる微量金属が、発生する炭酸ガスによって
炭酸塩となったり、イオウ分が含まれる時には硫化物と
なって、不溶性となることが多い。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the growth of microorganisms, soluble trace metals (Co, Ni,
(Fe, Mn, etc.) is necessary, but during methane fermentation, trace metals contained in the raw material become carbonate due to carbon dioxide gas generated, or become sulfides when sulfur is contained and become insoluble. Often becomes.
【０００６】特に生ゴミ等を原料とする時には、タンパ
ク質由来のイオウ分が多く、大量の硫化水素が発生する
ため、微量金属が硫化物として沈殿してしまい、微生物
の生育が阻害されることがある。Particularly when raw garbage is used as a raw material, a large amount of sulfur derived from protein is generated, and a large amount of hydrogen sulfide is generated, so that trace metals are precipitated as sulfides, and growth of microorganisms may be inhibited. is there.
【０００７】一方では、高温発酵（約５５℃）では、生
成する金属炭酸塩の溶解度が中温発酵（約３７℃）に比
べて低く、また発酵汚泥のｐＨが高くなるため硫化物が
沈殿し易い、という問題があった。On the other hand, in the high temperature fermentation (about 55 ° C.), the solubility of the produced metal carbonate is lower than that in the medium temperature fermentation (about 37 ° C.), and the pH of the fermented sludge becomes high, so that sulfides are easily precipitated. , There was a problem.
【０００８】本発明は上記問題を解決するもので、微生
物の生育に必要な微量金属を、微生物が利用し易い形態
に維持することができ、有機性廃棄物を効率よくメタン
発酵させることができるメタン発酵方法を提供すること
を目的とするものである。[0008] The present invention solves the above problems, and it is possible to maintain trace metals necessary for the growth of microorganisms in a form that is easy for microorganisms to utilize, and to efficiently methane ferment organic waste. It is intended to provide a methane fermentation method.
【０００９】[0009]
【課題を解決するための手段】上記問題を解決するため
に、本発明のメタン発酵方法は、有機性廃棄物に、発酵
微生物の必須発育因子たる微量金属と結合して錯イオン
を形成する錯化剤を添加して、メタン発酵させるように
したものである。In order to solve the above problems, the methane fermentation method of the present invention provides a complex which forms a complex ion in an organic waste by combining with a trace metal which is an essential growth factor of a fermenting microorganism. A methane fermentation is performed by adding an agent.
【００１０】さらに、発酵微生物の必須発育因子たる微
量金属を含んだ金属化合物を添加するようにしたもので
ある。上記した構成によれば、有機性廃棄物中に含まれ
る微量金属が錯化剤により錯イオンを形成し、溶解状態
となるため、この錯イオンをメタン菌などの発酵微生物
が利用することができ、メタン発酵効率が高まる。Further, a metal compound containing a trace amount of metal which is an essential growth factor of the fermenting microorganism is added. According to the above configuration, the trace metal contained in the organic waste forms a complex ion by the complexing agent and is in a dissolved state, so that the complex ion can be utilized by the fermenting microorganisms such as methane bacteria. , Methane fermentation efficiency is increased.
【００１１】有機性廃棄物中の微量金属の絶対量が不足
する時には、微量金属を含んだ金属化合物を添加するこ
とで、発酵微生物が利用できる錯イオン量を増大する。
錯化剤としては、シュウ酸や、クエン酸等のオキシカル
ボン酸など、発酵微生物の必須発育因子たる微量金属と
結合して錯イオンを形成するものであって、発酵に悪影
響を与えないものであれば何でも使用できる。When the absolute amount of the trace metal in the organic waste is insufficient, a metal compound containing the trace metal is added to increase the amount of complex ions available to the fermenting microorganism.
As a complexing agent, oxalic acid, or an oxycarboxylic acid such as citric acid, which forms a complex ion by binding with a trace metal that is an essential growth factor of a fermenting microorganism, and does not adversely affect fermentation. Anything can be used.
【００１２】金属化合物としては、塩化物など、易溶性
の塩を使用するのが好都合である。As the metal compound, it is convenient to use an easily soluble salt such as chloride.
【００１３】[0013]
【発明の実施の形態】以下、上述したのと同様の処理系
における有機性廃棄物のメタン発酵方法を図面を参照し
ながら説明する。BEST MODE FOR CARRYING OUT THE INVENTION A method for methane fermentation of organic waste in the same processing system as described above will be described below with reference to the drawings.
【００１４】図１に示したように、生ごみ、食品廃棄物
などの有機性廃棄物を破砕機１で破砕し、プラスチック
袋やトレーなどの発酵不適物を除去する。破砕された有
機性廃棄物２を、必要に応じて希釈水３を加えて濃度調
整したうえで、メタン発酵槽４の内部に導入し、約５５
℃に維持する状態においてメタン発酵させる。その際
に、メタン発酵槽４の内部に、クエン酸、シュウ酸など
の錯化剤５を投入して混合する。As shown in FIG. 1, organic waste such as food waste and food waste is crushed by a crusher 1 to remove unsuitable fermentation products such as plastic bags and trays. The crushed organic waste 2 is introduced into the methane fermentation tank 4 after adjusting the concentration by adding dilution water 3 as needed, and
Methane fermentation is carried out in the state of being maintained at ℃. At that time, a complexing agent 5 such as citric acid or oxalic acid is put into the methane fermentation tank 4 and mixed.
【００１５】このようにすることにより、原料たる有機
性廃棄物中に含まれる微量金属（Ｃｏ，Ｎｉ，Ｍｎ，Ｆ
ｅ等）は、メタン発酵に伴って発生した炭酸ガスや硫化
水素によって沈殿することなく、また沈殿しているもの
も、錯イオン化し、この錯イオンをメタン菌などの発酵
微生物が高率にて摂取し、生育が促進される結果、有機
性廃棄物２が短い日数で効率よくメタン発酵する。発生
したメタンなどのバイオガス７、消化汚泥８は従来と同
様にして処理する。By doing so, trace metals (Co, Ni, Mn, F) contained in the organic waste as a raw material are obtained.
e)) does not precipitate due to carbon dioxide and hydrogen sulfide generated by methane fermentation, and even if it is precipitated, it is complex ionized and fermenting microorganisms such as methane bacteria can produce this complex ion at a high rate. As a result of ingestion and promotion of growth, the organic waste 2 is efficiently methane-fermented in a short number of days. The generated biogas 7 such as methane and the digested sludge 8 are treated in the same manner as in the past.
【００１６】有機性廃棄物の種類や混合割合によって
は、微量金属の絶対量が不足するので、そのような場合
には、微量金属を含んだ金属化合物６を投入し、それに
見合うように錯化剤６を投入することにより、発酵微生
物が利用できる錯イオン量を増大させる。Depending on the type and mixing ratio of the organic waste, the absolute amount of the trace metal is insufficient. In such a case, the metal compound 6 containing the trace metal is added, and the complexing is performed to match it. By adding the agent 6, the amount of complex ions available to the fermenting microorganisms is increased.
【００１７】錯化剤５や金属化合物６を投入するに際し
ては、槽内の発酵汚泥の全（微量金属）濃度および溶解
性（微量金属）濃度を測定し、全濃度不足時には金属化
合物６を、溶解性濃度不足時は錯化剤５を、両方不足し
ている時には両者を、必要量だけ投入する。一般に、Ｃ
ｏ，Ｎｉ等の微量金属は１ｐｐｍ程度存在すればよいと
されているので、それに見合う金属化合物６の投入量と
する。溶解性濃度のみを測定して、不足している場合
に、１ｐｐｍを満たす量の金属化合物６を投入するよう
にしてもよい。When adding the complexing agent 5 and the metal compound 6, the total (trace metal) concentration and the solubility (trace metal) concentration of the fermentation sludge in the tank are measured, and when the total concentration is insufficient, the metal compound 6 is added. When the solubility concentration is insufficient, the complexing agent 5 is added, and when both are insufficient, the required amount of both is added. Generally, C
It is said that trace metals such as o and Ni should be present in an amount of about 1 ppm, so the amount of the metal compound 6 to be added is set to be appropriate. Only the solubility concentration may be measured, and when the solubility is insufficient, an amount of the metal compound 6 satisfying 1 ppm may be added.
【００１８】錯化剤５としてクエン酸あるいはシュウ酸
を使用する場合は通常、槽内の発酵汚泥に対して１００
〜１０００ｍｇ／Ｌ、好ましくは５００ｍｇ／Ｌ投入す
ればよい。When citric acid or oxalic acid is used as the complexing agent 5, it is usually 100 with respect to the fermentation sludge in the tank.
˜1000 mg / L, preferably 500 mg / L may be added.
【００１９】ただし、錯化剤５や金属化合物６は、メタ
ン発酵槽４へ導入する有機性廃棄物２に添加してもよい
し、メタン発酵槽４の内部の発酵汚泥に添加してもよ
い。具体例を挙げると、メタン発酵槽の状態が悪化した
（有機物の分解率が低下してガス発生量が減少し、有機
酸、高温発酵であったため特にプロピオン酸が蓄積し
た）ので、汚泥を分析した結果、発酵状態の悪化は溶解
性の微量金属（Ｃｏ，Ｎｉ，Ｍｎ）の不足に起因してい
ると思われたため、クエン酸（またはシュウ酸）を槽内
の発酵汚泥に対して１００ｍｇ／Ｌの割合で添加したと
ころ、メタン発酵状態がよくなった（ガス発生量が増加
し、プロピオン酸濃度が低下した）。However, the complexing agent 5 and the metal compound 6 may be added to the organic waste 2 introduced into the methane fermentation tank 4 or may be added to the fermentation sludge inside the methane fermentation tank 4. . To give a specific example, the condition of the methane fermentation tank deteriorated (decomposition rate of organic substances decreased, gas generation amount decreased, and propionic acid accumulated especially because of organic acid and high temperature fermentation), so sludge was analyzed As a result, it was considered that the deterioration of the fermentation state was caused by the lack of soluble trace metals (Co, Ni, Mn), so citric acid (or oxalic acid) was added to the fermentation sludge in the tank at 100 mg / When added at a ratio of L, the methane fermentation condition improved (the gas generation amount increased and the propionic acid concentration decreased).
【００２０】また、生ごみを発酵対象物とした時に、全
Ｃｏが１ｍｇ／Ｌ未満であり、メタン発酵には不足であ
ると思われたので、クエン酸１００ｍｇ／ＬとＣｏＣｌ
2 １ｍｇ／Ｌとを混合して添加したところ、メタン発酵
状態がよくなった。Further, when the raw garbage was fermented, the total Co content was less than 1 mg / L, which was considered insufficient for methane fermentation. Therefore, 100 mg / L citric acid and CoCl 2 were added.
When mixed with 21 mg / L, the methane fermentation condition improved.
【００２１】全Ｃｏ，全Ｎｉが不足していた時には、ク
エン酸１００ｍｇ／ＬとＣｏＣｌ2１ｍｇ／ＬとＮｉＣ
ｌ2 １ｍｇ／Ｌとを混合して添加することで、メタン発
酵状態を改善できた。When total Co and total Ni were insufficient, citric acid 100 mg / L, CoCl 2 1 mg / L and NiC
The methane fermentation state could be improved by mixing and adding 1 2 1 mg / L.
【００２２】なお、上記したように高温発酵（約５５
℃）させる場合には、高い負荷をかけることができ、ま
たタンパク質の分解率が高いという利点があるが、中温
発酵（約３７℃）の場合には、炭酸塩の溶解度が高く、
ｐＨが低いために、炭酸塩、硫化物ともに沈殿しにく
く、錯化剤５および金属化合物６の投入量を低減でき
る。As described above, high temperature fermentation (about 55
However, in the case of medium temperature fermentation (about 37 ° C), the solubility of carbonate is high,
Since the pH is low, both carbonates and sulfides are unlikely to precipitate, and the amounts of the complexing agent 5 and the metal compound 6 added can be reduced.
【００２３】原料たる有機性廃棄物を破砕するに際して
は、一軸破砕機などの粗破砕機で粗破砕し、次いで圧縮
破砕機で２００〜２５０ｋｇ／ｃｍ2 の高圧にて圧縮破
砕するのが望ましい。When crushing the organic waste as a raw material, it is desirable to roughly crush it with a coarse crusher such as a uniaxial crusher, and then compress it with a compression crusher at a high pressure of 200 to 250 kg / cm 2 .
【００２４】この方法によれば、有機性廃棄物やそれに
随伴するプラスチック類等は、一軸破砕機で粒径２０〜
１００ｍｍ以下に粗破砕された後に、圧縮破砕機で高圧
にて圧縮破砕されて、破砕排出孔の孔径に応じた粒径１
〜２ｍｍ以下の細粒子状の破砕物となって排出され、破
砕不能なし渣、プラスチック類、金属類、石・砂などの
発酵不適物は残留して自動的に分別される。According to this method, the organic waste and the plastics accompanying it are treated with a uniaxial crusher to have a particle size of 20 to 20.
After coarsely crushing to 100 mm or less, compression crushing is performed at high pressure by a compression crusher, and a particle size of 1 depending on the diameter of the crushing discharge hole.
It is discharged as fine-grained crushed material of ˜2 mm or less, and unsuitable fermentation residue such as non-crushable residue, plastics, metals, stones, sand, etc. remains and is automatically separated.
【００２５】細粒子状の有機性廃棄物は、細胞膜も一部
破壊されているため生物分解性が非常に大きく、従来は
破砕困難であったために排除されていた有機性廃棄物
や、発酵不適物に付着して排除されていた有機性廃棄物
も含まれることもあって、有機成分の回収率が非常に高
くなる。The fine-grained organic waste has a very large biodegradability because the cell membrane is also partially destroyed, and it has been difficult to crush until now. Since the organic waste that has been attached to and removed from the object is also included, the recovery rate of the organic component becomes extremely high.
【００２６】メタン発酵槽４に投入する有機性廃棄物２
の濃度は、槽内で流動性を保つことができる程度であれ
ばよく、発酵槽内の加温（保温）のためのエネルギー消
費量を考慮すると、ＴＳ濃度１０〜１５％に調整するの
が有利な場合がある。Organic waste 2 to be put into the methane fermentation tank 4
As long as the fluidity can be maintained in the tank, it is necessary to adjust the TS concentration to 10 to 15% in consideration of the energy consumption for heating (heat retention) in the fermentation tank. There may be an advantage.
【００２７】消化汚泥８の一部を脱水機や槽内外に配置
した濾過膜などで濃縮して発酵槽内へ返送（残留）する
ことによって、メタン菌濃度や発酵阻害物質濃度を調整
するようにすれば、発酵効率がさらに高まる。A part of the digested sludge 8 is concentrated by a dehydrator or a filtration membrane arranged inside or outside the tank and returned (residual) into the fermentation tank so that the concentration of methane bacteria or the concentration of the fermentation inhibitor can be adjusted. If this is done, the fermentation efficiency will be further enhanced.
【００２８】従来と同様にして浄化槽汚泥などから発生
した脱水汚泥を混合する場合には、発酵に時間を要する
ので、約７０〜８０℃で３日間維持する等の周知の手法
によって可溶化しておくのが望ましい。When dewatered sludge generated from septic tank sludge or the like is mixed in the same manner as in the conventional case, it takes a long time for fermentation. Therefore, it is solubilized by a known method such as maintaining at 70 to 80 ° C. for 3 days. It is desirable to put it.
【００２９】[0029]
【発明の効果】以上のように、本発明によれば、有機性
廃棄物に錯化剤を混和してメタン発酵させることによ
り、メタン菌などの発酵微生物の必須発育因子たる微量
金属を、炭酸塩や硫化物として沈殿させることなく錯イ
オン化して、発酵微生物の生育を促進することができ、
メタン発酵効率を高めることができる。As described above, according to the present invention, a trace amount of metal, which is an essential growth factor of fermenting microorganisms such as methane bacteria, is reduced by mixing carbon dioxide with a complexing agent in organic wastes and performing methane fermentation. Complex ionization without precipitation as salts or sulfides can promote the growth of fermenting microorganisms,
The efficiency of methane fermentation can be increased.
【００３０】微量金属の絶対量が不足する時は、微量金
属を含んだ金属化合物を混和することによって、発酵微
生物が利用できる錯イオン量を増大することができる。When the absolute amount of the trace metal is insufficient, the amount of complex ion available to the fermenting microorganism can be increased by mixing the metal compound containing the trace metal.
【図１】本発明の一実施形態における有機性廃棄物のメ
タン発酵方法のフローを示した説明図である。FIG. 1 is an explanatory diagram showing a flow of a method for methane fermentation of organic waste according to an embodiment of the present invention.
【図２】従来の有機性廃棄物の処理フローを示したフロ
ーチャートである。FIG. 2 is a flowchart showing a processing flow of a conventional organic waste.
２ 有機性廃棄物 ４ メタン発酵槽 ５ 錯化剤 ６ 金属化合物 2 Organic waste 4 methane fermentation tank 5 Complexing agent 6 metal compounds
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 哲也 大阪府大阪市浪速区敷津東一丁目２番47号 株式会社クボタ内 (72)発明者 柴田 敏行 大阪府大阪市浪速区敷津東一丁目２番47号 株式会社クボタ内 (72)発明者 小松 敏宏 大阪府大阪市浪速区敷津東一丁目２番47号 株式会社クボタ内 Ｆターム(参考） 4D059 AA01 AA02 AA03 AA07 AA08 BA12 BA25 BA29 BA56 BE01 BF02 BK11 BK17 CA12 CA14 CA22 CC01 CC03 DA70 DB08 EB01 EB06 EB11 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Tetsuya Yamamoto 2-47 Shikitsuhigashi, Naniwa-ku, Osaka-shi, Osaka Kubota Corporation (72) Inventor Toshiyuki Shibata 2-47 Shikitsuhigashi, Naniwa-ku, Osaka-shi, Osaka Kubota Corporation (72) Inventor Toshihiro Komatsu 2-47 Shikitsuhigashi, Naniwa-ku, Osaka-shi, Osaka Kubota Corporation F term (reference) 4D059 AA01 AA02 AA03 AA07 AA08 BA12 BA25 BA29 BA56 BE01 BF02 BK11 BK17 CA12 CA14 CA22 CC01 CC03 DA70 DB08 EB01 EB06 EB11
Claims (2)
因子たる微量金属と結合して錯イオンを形成する錯化剤
を添加して、メタン発酵させることを特徴とするメタン
発酵方法。1. A methane fermentation method comprising adding a complexing agent that forms a complex ion by binding to a trace metal, which is an essential growth factor of a fermenting microorganism, to organic waste, and performing methane fermentation.
微量金属を含んだ金属化合物を添加することを特徴とす
る請求項１記載のメタン発酵方法。2. The method for methane fermentation according to claim 1, further comprising adding a metal compound containing a trace metal which is an essential growth factor of the fermenting microorganism.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23105798A JP3727178B2 (en) | 1998-08-18 | 1998-08-18 | Methane fermentation method |
| EP19990201896 EP0970922B1 (en) | 1998-07-06 | 1999-06-14 | Method for methane fermentation of organic waste |
| DE1999637024 DE69937024T2 (en) | 1998-07-06 | 1999-06-14 | Process for methane fermentation of organic waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23105798A JP3727178B2 (en) | 1998-08-18 | 1998-08-18 | Methane fermentation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000061433A true JP2000061433A (en) | 2000-02-29 |
| JP3727178B2 JP3727178B2 (en) | 2005-12-14 |
Family
ID=16917619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23105798A Expired - Lifetime JP3727178B2 (en) | 1998-07-06 | 1998-08-18 | Methane fermentation method |
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| JP (1) | JP3727178B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001276880A (en) * | 2000-03-31 | 2001-10-09 | Ataka Construction & Engineering Co Ltd | Waste treatment method and device therefor |
| JP2007069212A (en) * | 2006-12-18 | 2007-03-22 | Ebara Corp | Method for treating organic waste water and apparatus therefor |
| EP2158166A1 (en) * | 2007-05-31 | 2010-03-03 | Kemira OYJ | A method for enzymatic treatment of sludge in water purification |
| JP2010528596A (en) * | 2007-05-29 | 2010-08-26 | イーエス・フォルシュングスゲゼルシャフト・ミット・ベシュレンタク・ハフツング | How to produce biogas |
| KR101731472B1 (en) | 2015-06-11 | 2017-05-02 | 주식회사 세종메디칼 | Exhaust filter assembly for trocar |
| CN114790071A (en) * | 2022-03-21 | 2022-07-26 | 淮阴工学院 | Method for reducing greenhouse gas emission of urban sewer and application thereof |
-
1998
- 1998-08-18 JP JP23105798A patent/JP3727178B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001276880A (en) * | 2000-03-31 | 2001-10-09 | Ataka Construction & Engineering Co Ltd | Waste treatment method and device therefor |
| JP2007069212A (en) * | 2006-12-18 | 2007-03-22 | Ebara Corp | Method for treating organic waste water and apparatus therefor |
| JP4570608B2 (en) * | 2006-12-18 | 2010-10-27 | 荏原エンジニアリングサービス株式会社 | Organic wastewater treatment method and apparatus |
| JP2010528596A (en) * | 2007-05-29 | 2010-08-26 | イーエス・フォルシュングスゲゼルシャフト・ミット・ベシュレンタク・ハフツング | How to produce biogas |
| EP2158166A1 (en) * | 2007-05-31 | 2010-03-03 | Kemira OYJ | A method for enzymatic treatment of sludge in water purification |
| EP2158166A4 (en) * | 2007-05-31 | 2010-08-25 | Kemira Oyj | A method for enzymatic treatment of sludge in water purification |
| KR101731472B1 (en) | 2015-06-11 | 2017-05-02 | 주식회사 세종메디칼 | Exhaust filter assembly for trocar |
| CN114790071A (en) * | 2022-03-21 | 2022-07-26 | 淮阴工学院 | Method for reducing greenhouse gas emission of urban sewer and application thereof |
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|---|---|
| JP3727178B2 (en) | 2005-12-14 |
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