JP2001232400A - Method for biodegrading oils and fats - Google Patents
Method for biodegrading oils and fatsInfo
- Publication number
- JP2001232400A JP2001232400A JP2000047165A JP2000047165A JP2001232400A JP 2001232400 A JP2001232400 A JP 2001232400A JP 2000047165 A JP2000047165 A JP 2000047165A JP 2000047165 A JP2000047165 A JP 2000047165A JP 2001232400 A JP2001232400 A JP 2001232400A
- Authority
- JP
- Japan
- Prior art keywords
- fats
- oils
- sludge
- biodegrading
- organic sludge
- 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
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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
Landscapes
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、油脂の生物分解方
法、詳しくは高価な酵母エキスを使用せずに、廃棄物で
ある有機性汚泥を利用して油脂を高温好気分解する油脂
の生物分解方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for biodegrading fats and oils, and more particularly to a biodegradation method for fats and oils which uses organic sludge as waste without using an expensive yeast extract. It relates to a decomposition method.
【０００２】[0002]
【従来の技術】例えば、厨房や食品工場で発生する排水
に含まれる油脂分は、高いＢＯＤ負荷となって生物処理
槽の機能を低下させたり、処理生物に付着して、沈殿槽
における処理物と処理水との固液分離を困難にする。さ
らに、排水管などの配管を閉塞させる。そこで、この油
脂分は、あらかじめ加圧浮上分離やグリース阻集器によ
って分離除去され、産業廃棄物として焼却や埋め立てに
よって最終処分されている。そのほか、従来、このよう
に高濃度に濃縮された油脂廃棄物を、酵母エキスや尿素
を適量添加した高温好気分解によって処理する方法が知
られている。2. Description of the Related Art For example, fats and oils contained in wastewater generated in kitchens and food factories cause a high BOD load to lower the function of a biological treatment tank, adhere to treated organisms, and cause a treatment in a sedimentation tank. Makes the solid-liquid separation of water and treated water difficult. Further, the pipe such as a drain pipe is closed. Therefore, the fats and oils are separated and removed in advance by pressure flotation or a grease interceptor, and are finally disposed of as industrial waste by incineration or landfill. In addition, conventionally, there has been known a method of treating fat and oil waste concentrated in such a high concentration by high-temperature aerobic decomposition to which yeast extract and urea are added in appropriate amounts.
【０００３】高温好気分解とは、高濃度油脂廃棄物を処
理対象としたもので、処理槽に充填されたオガクズなど
は、有機物分解を促進するための通気性の保持、水分調
整および微生物の住処としての担体の役目を果たしてい
る。この処理槽では、槽内を混合、均一化して分解を促
進させるために排液注入時などに切り返し攪拌を行うと
ともに、処理槽の低部から強制的に連続通気を施す。処
理温度は、通常、６０℃前後である。これらの操作を繰
り返すことで、担体に付着した高温好気微生物が有機物
を二酸化炭素と水にまで効率的に分解し、その分解過程
で発生した熱によって水分の蒸発が行われるため、処理
槽に連続的に排液を注入しても、処理水が排出されない
システムとなっている。[0003] High-temperature aerobic decomposition is intended for treating high-concentration fats and oils wastes, and sawdust and the like filled in a treatment tank maintain air permeability for promoting organic matter decomposition, adjust moisture, and remove microorganisms. It plays the role of a carrier as a residence. In this processing tank, in order to mix and homogenize the inside of the tank to promote decomposition, the liquid is stirred repeatedly at the time of drainage injection and the like, and forced continuous ventilation is performed from the lower part of the processing tank. The processing temperature is usually around 60 ° C. By repeating these operations, the high-temperature aerobic microorganisms attached to the carrier efficiently decompose the organic matter into carbon dioxide and water, and the heat generated during the decomposition process evaporates the water. The system does not discharge the treated water even if the drainage is continuously injected.
【０００４】しかしながら、従来の油脂廃棄物の高温好
気分解法によれば、尿素を用いた高濃度油脂の分解は効
率が悪く、また高価な酵母エキスによる分解によれば、
ランニングコストが高すぎてしまい、経済的な側面から
実用的でないという問題点がある。そこで、本発明者ら
は、長期にわたる鋭意研究の結果、下水汚泥などの有機
性汚泥がこの高濃度油脂の高温好気分解を促進させる有
効な添加物であることを知見し、この発明を完成させる
に至った。[0004] However, according to the conventional high-temperature aerobic decomposition method of fat and oil waste, decomposition of high-concentration fat and oil using urea is inefficient, and according to decomposition with expensive yeast extract,
There is a problem that the running cost is too high and is not practical from an economical point of view. Accordingly, the present inventors have found that organic sludge such as sewage sludge is an effective additive for promoting high-temperature aerobic decomposition of high-concentration fats and oils as a result of long-term earnest research, and completed the present invention. It led to.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、このような
従来技術を背景になされたもので、廃棄物である有機性
汚泥を利用することで、低コストで高効率の油脂の生物
分解方法を提供するものである。SUMMARY OF THE INVENTION The present invention has been made on the basis of such a conventional technique, and a low-cost and high-efficiency biodegradation method for fats and oils by utilizing organic sludge as waste. Is provided.
【０００６】[0006]
【課題を解決するための手段】請求項１に記載の発明
は、接触担体と油脂分解種菌とを混合して得られた基体
に、分解される油脂および有機性汚泥を添加混合した混
合物に、さらに通気しながら前記油脂を高温好気分解す
ることを特徴とする油脂の生物分解方法である。Means for Solving the Problems The invention according to claim 1 is to provide a mixture obtained by mixing a contact carrier and a fat and oil-decomposing seed bacterium with a fat and an organic sludge to be decomposed. A method for biodegrading fats and oils, wherein the fats and oils are aerobic-decomposed at a high temperature while aerated.
【０００７】請求項２に記載の発明は、前記高温好気分
解の処理温度が５０〜７０℃である請求項１に記載の油
脂の生物分解方法である。The invention according to claim 2 is the method for biodegrading fats and oils according to claim 1, wherein the treatment temperature of the high-temperature aerobic decomposition is 50 to 70 ° C.
【０００８】請求項３に記載の発明は、前記高温好気分
解の処理時間が２４〜２５０時間である請求項１または
請求項２に記載の油脂の生物分解方法である。The invention according to claim 3 is the method for biodegrading fats and oils according to claim 1 or 2, wherein the treatment time of the high-temperature aerobic decomposition is 24 to 250 hours.
【０００９】請求項４に記載の発明は、前記有機性汚泥
が乾燥した汚泥である請求項１〜請求項３のうち、何れ
か１項に記載の油脂の生物分解方法である。The invention according to claim 4 is the biodegradation method for fats and oils according to any one of claims 1 to 3, wherein the organic sludge is dried sludge.
【００１０】請求項５に記載の発明は、前記混合物の初
期含水量が４０〜７０重量％である請求項１〜請求項４
のうち、何れか１項に記載の油脂の生物分解方法であ
る。According to a fifth aspect of the present invention, the mixture has an initial water content of 40 to 70% by weight.
And a biodegradation method for fats and oils according to any one of the above.
【００１１】請求項６に記載の発明は、前記有機性汚泥
が、下水汚泥、嫌気性処理汚泥および工業排水処理汚泥
の汚泥群から選ばれたものである請求項１〜請求項５の
うち、何れか１項に記載の油脂の生物分解方法である。According to a sixth aspect of the present invention, the organic sludge is selected from the group consisting of sewage sludge, anaerobic treated sludge and industrial wastewater treated sludge. A method for biodegrading fats and oils according to any one of the preceding claims.
【００１２】請求項７に記載の発明は、前記有機性汚泥
の混合割合が、有機性汚泥（乾燥汚泥換算）／接触担体
の重量比で、０．００５〜０．１である請求項１〜請求
項６のうち、何れか１項に記載の油脂の生物分解方法で
ある。[0012] In the invention according to claim 7, the mixing ratio of the organic sludge is 0.005 to 0.1 by weight ratio of organic sludge (in terms of dry sludge) / contact carrier. A biodegradation method for fats and oils according to any one of claims 6.
【００１３】[0013]
【発明の実施の形態】この発明によれば、まず高温好気
分解法において、接触担体と油脂分解種菌とを混合して
基体を中間製造する。高温好気分解装置としては、周知
の装置を採用できる。接触担体としては、例えば木質チ
ップ、籾殻、木炭、活性炭、繊維クズ、樹脂成形品など
が挙げられる。ただし、表面積が大きく、空気との接触
もよく、低湿性の保てる担体が好ましい。油脂分解種菌
としては、市販の種菌を採用することができる。また、
油脂分解微生物棲息多孔質体のほか、油脂分解処理後の
基体を循環使用してもよい。According to the present invention, first, in a high-temperature aerobic decomposition method, a contact carrier and an oil / fat-decomposing seed bacterium are mixed to produce an intermediate substrate. As the high-temperature aerobic decomposition device, a known device can be employed. Examples of the contact carrier include wood chips, rice husk, charcoal, activated carbon, fiber waste, and resin molded products. However, a carrier having a large surface area, good contact with air, and keeping low humidity is preferable. A commercially available inoculum can be used as the oil-decomposing inoculum. Also,
In addition to the porous material that inhabits the fat-decomposing microorganism, the substrate after the fat-decomposition treatment may be recycled.
【００１４】次に、この中間製造された基体に、油脂お
よび有機性汚泥を添加混合して混合物となし、これを昇
温して通気することで油脂の高温好気分解処理を行う。
分解される対象油脂は、例えば厨房や食品工場から排出
される排水中から分離された油脂分、廃棄食用油、食品
工場廃棄油脂などが挙げられる。また、油脂の混合量
は、被処理油脂／接触担体の重量比で０．７以下、好ま
しくは０．１〜０．５である。０．５を超えると、処理
槽内の被処理物に対して均一通気ができなくなるなどの
不都合が生じる。有機汚泥の種類としては、例えば請求
項６の下水汚泥、嫌気性処理汚泥、産業排水処理汚泥な
どが挙げられる。この汚泥は、請求項４のように乾燥し
た汚泥でもよいし、含水性の高い汚泥でもよい。なお、
ここでいう乾燥汚泥とは、含水率が５〜４０重量％のも
のをいう。Next, the fat and the organic sludge are added to and mixed with the intermediate manufactured substrate to form a mixture, and the mixture is heated and aerated to perform a high-temperature aerobic decomposition treatment of the fat and oil.
The fats and oils to be decomposed include, for example, fats and oils separated from wastewater discharged from kitchens and food factories, waste edible oil, food factory waste fats, and the like. The mixing amount of the fat or oil is 0.7 or less, preferably 0.1 to 0.5 in terms of the weight ratio of the fat to be treated / the contact carrier. If it exceeds 0.5, problems such as the inability to uniformly ventilate the object to be processed in the processing tank will occur. Examples of the type of organic sludge include sewage sludge, anaerobic treatment sludge, and industrial wastewater treatment sludge. This sludge may be dried sludge as described in claim 4 or may be sludge having high water content. In addition,
Here, the dry sludge has a water content of 5 to 40% by weight.
【００１５】有機性汚泥の混合割合は、請求項７に示す
有機性汚泥（乾燥汚泥換算）／接触担体の重量比で０．
００５〜０．１、好ましくは０．０１〜０．０７であ
る。０．００５未満では、処理対象の油脂廃棄物の分解
速度が低下する。一方、０．１を超えると、油脂の処理
量が低下する。The mixing ratio of the organic sludge is 0.1 in terms of the weight ratio of the organic sludge (in terms of dry sludge) / contact carrier according to claim 7.
005 to 0.1, preferably 0.01 to 0.07. If it is less than 0.005, the decomposition rate of the fat / oil waste to be treated is reduced. On the other hand, when it exceeds 0.1, the processing amount of fats and oils decreases.
【００１６】高温好気分解の処理温度としては、請求項
２の５０〜７０℃、好ましくは５５〜６５℃である。５
０℃未満では、油脂分解速度が低下する。一方、７０℃
を超えると、加温エネルギーが増加し、処理コストが経
済的でなくなる。The high-temperature aerobic decomposition treatment temperature is 50 to 70 ° C., preferably 55 to 65 ° C. in the second aspect. 5
If the temperature is lower than 0 ° C., the fat / oil decomposition rate decreases. On the other hand, 70 ° C
Exceeding this will increase the heating energy and make the processing costs uneconomical.
【００１７】高温好気分解の処理時間は、請求項３の２
４〜２５０時間、好ましくは１２０〜２４０時間であ
る。２４時間未満では、油脂の分解率が低く、一方、２
５０時間を超えると、処理槽が大きくなり、経済的でな
くなる。The processing time for the high-temperature aerobic decomposition is as defined in claim 3-2.
It is 4 to 250 hours, preferably 120 to 240 hours. If the time is less than 24 hours, the decomposition rate of fats and oils is low, while
If it exceeds 50 hours, the processing tank becomes large, and it is not economical.
【００１８】有機性汚泥が添加された混合物の初期含水
量は、請求項５の４０〜７０重量％、好ましくは５０〜
７０重量％である。４０重量％未満では、油脂分解速度
が低下し、一方、７０重量％を超えると、処理槽内の被
処理物の対して均一通気ができなくなり、槽内全体での
好気状態が保持できない。The initial water content of the mixture to which the organic sludge is added is 40 to 70% by weight, preferably 50 to 70% by weight.
70% by weight. If it is less than 40% by weight, the fat / oil decomposition rate will be reduced, while if it exceeds 70% by weight, uniform aeration of the article to be treated in the treatment tank will not be possible, and the aerobic state in the entire tank will not be maintained.
【００１９】高温好気分解時の通気量は、槽内混合物１
ｍ3 あたり、３０〜２００リットル／ｍｉｎ、好ましく
は５０〜１５０リットル／ｍｉｎである。３０リットル
／ｍｉｎ未満では、通気量不足により好気状態が保持で
きなくなり、油脂分解速度が低下する。一方、２００リ
ットル／ｍｉｎを超えると、槽内からの排気量が多くな
るに伴って同伴される水蒸気量が多くなり、槽内の被処
理物の乾燥が進み、頻繁に水分補給が必要となる。The amount of aeration at the time of high-temperature aerobic decomposition depends on the mixture 1 in the tank.
It is 30 to 200 l / min, preferably 50 to 150 l / min per m3. If it is less than 30 liters / min, the aerobic state cannot be maintained due to insufficient ventilation, and the fat / oil decomposition rate decreases. On the other hand, if it exceeds 200 liters / min, the amount of steam entrained increases as the amount of exhaust from the tank increases, and the drying of the object to be processed in the tank progresses, and frequent water supply is required. .
【００２０】このように、油脂の高温好気分解時には、
接触担体と油脂分解種菌とを混合して得られた基体に、
分解される油脂および有機性汚泥を添加混合し、これを
所定時間、一定温度に保持してかつ通気することで油脂
を高温好気分解処理する。これにより、有機性汚泥の処
理が行われると同時に、従来の高価な酵母エキスを採用
したときに比べて低コストで、しかも高効率に油脂を生
物分解することができる。Thus, at the time of high-temperature aerobic decomposition of fats and oils,
On the substrate obtained by mixing the contact carrier and the fat-decomposing seed bacterium,
The fats and oils to be decomposed and the organic sludge are added and mixed, and the mixture is kept at a constant temperature for a predetermined time and ventilated to subject the fats and oils to high-temperature aerobic decomposition treatment. Thereby, at the same time as the treatment of the organic sludge, the fats and oils can be biodegraded at a lower cost and more efficiently than when a conventional expensive yeast extract is employed.
【００２１】次に、この発明の油脂の生物分解方法を用
いた具体的なサンプリングテストを行った際の試験結果
を報告する。まず、容量１リットルの三角フラスコの中
に木材チップ１４０ｇ、種菌チップ５ｇおよび市販のサ
ラダ油１５ｇを投入した。これに、表１に示す所定量の
酵母エキス、下水汚泥、尿素および微量無機成分などの
油脂分解を促進する添加物を混合した蒸留水６０ｍｌを
加え、初期含水量を６０重量％とした。通気は下面より
５０ｍｌ／ｍｉｎで行い、温度は三角フラスコを水浴中
に置いた状態で６０℃に保持した。このような条件下で
１２０時間後に分解されず、残存した粗脂肪量を測定
し、油脂の残存率を算出して各添加物の油脂分解促進効
果について評価した。測定は、クロロホルム・メタノー
ル混合液を用いたソックスレー抽出による。下水汚泥と
しては、下水処理場で採取した脱水汚泥を１１０℃で２
４時間乾燥後、粉末にしたものを使用した。Next, the results of a specific sampling test using the biodegradation method of the present invention will be described. First, 140 g of wood chips, 5 g of inoculum chips and 15 g of commercially available salad oil were charged into a 1-liter Erlenmeyer flask. To this, 60 ml of distilled water mixed with additives for promoting the decomposition of fats and oils such as a predetermined amount of yeast extract, sewage sludge, urea, and trace inorganic components shown in Table 1 was added to adjust the initial water content to 60% by weight. Aeration was performed at 50 ml / min from the lower surface, and the temperature was maintained at 60 ° C. with the conical flask placed in a water bath. Under such conditions, the amount of crude fat remaining without being decomposed after 120 hours was measured, and the residual ratio of fats and oils was calculated to evaluate the effect of each additive on the decomposition of fats and oils. The measurement is based on Soxhlet extraction using a mixed solution of chloroform and methanol. As the sewage sludge, dehydrated sludge collected at a sewage treatment plant was heated at 110 ° C for 2 hours.
After drying for 4 hours, a powder was used.
【００２２】表１中には、このサラダ油１５ｇが、１２
０時間の高温好気分解後に粗脂肪として残存するパーセ
ントを示す。油脂単独の場合や、無機態窒素（尿素）の
みを添加物として加えた場合には油脂分解は進行せず、
油脂の９０％以上が１２０時間経過後も残っていた。し
かし、サラダ油に無機態窒素と微量無機成分とを添加し
た場合には、油脂の残存率は大きく改善されて４２％と
なった。しかも、酵母エキスを組み合わせた場合には、
油脂の残存率は３１％まで低減された。In Table 1, 15 g of this salad oil was 12 g
The percentage remaining as crude fat after 0 hour hot aerobic digestion is shown. When fats and oils alone or when only inorganic nitrogen (urea) is added as an additive, fats and oils do not decompose,
90% or more of the fat remained after 120 hours. However, when inorganic nitrogen and a trace amount of inorganic components were added to salad oil, the residual ratio of fats and oils was greatly improved to 42%. And when combined with yeast extract,
The residual ratio of fats and oils was reduced to 31%.
【００２３】この（酵母エキス＋尿素＋微量無機成分）
の組み合わせをポジティブコントロールとして、下水汚
泥の油脂分解促進性を評価する指標とした。その結果、
表１に示したように、酵母エキスの代わりに下水汚泥を
使用した（下水汚泥＋尿素＋微量無機成分）の組み合わ
せでは、油脂残存率１７％が得られた。このように、下
水汚泥を用いた組み合わせで、酵母エキスによるポジテ
ィブコントロールを上回る油脂分解率が得られたことに
より、下水汚泥が酵母エキスの代替物質として十分に有
効であることが明らかになった。This (yeast extract + urea + trace inorganic component)
Was used as a positive control and was used as an index for evaluating the ability of sewage sludge to promote fat and oil decomposition. as a result,
As shown in Table 1, in the combination of sewage sludge instead of yeast extract (sewage sludge + urea + trace inorganic component), an oil / fat residual ratio of 17% was obtained. As described above, the combination using sewage sludge obtained an oil / fat decomposition rate exceeding the positive control using yeast extract, and thus it was revealed that sewage sludge was sufficiently effective as a substitute for yeast extract.
【００２４】また、下水汚泥は、単独で添加した場合で
も油脂の残存率を２１％まで減少できることが分かっ
た。下水汚泥単独で得られた油脂分解率は、（酵母エキ
ス＋尿素＋微量無機成分）の組み合わせで得られる油脂
分解率を上回っており、下水汚泥自体がこの組み合わせ
で供給される成分を十分に含むだけでなく、さらに効果
的な成分または成分バランスを保持していることが考え
られた。このように、油脂の高温好気分解に下水汚泥を
利用したので、有機性汚泥の処理を行うと同時に、低コ
ストでかつ高効率に油脂を生物分解することができた。Further, it was found that the residual ratio of fats and oils can be reduced to 21% even when sewage sludge is added alone. The fat and oil decomposition rate obtained by sewage sludge alone exceeds the fat and oil decomposition rate obtained by the combination of (yeast extract + urea + trace inorganic components), and the sewage sludge itself sufficiently contains the components supplied by this combination. In addition, it was considered that the composition had a more effective component or component balance. As described above, since sewage sludge is used for high-temperature aerobic decomposition of fats and oils, organic fats and oils can be biodegraded at low cost and high efficiency while treating organic sludge.
【００２５】[0025]
【表１】 [Table 1]
【００２６】表１中、Ｕは尿素、ＴＥは微量無機成分、
ＹＥは酵母エキス、Ｓは下水汚泥を示す。In Table 1, U is urea, TE is a trace inorganic component,
YE indicates yeast extract and S indicates sewage sludge.
【００２７】[0027]
【発明の効果】本発明にあっては、このように廃棄物で
ある有機性汚泥を利用して油脂を高温好気分解するよう
にしたので、有機性汚泥の処理を行うと同時に、低コス
トでかつ高効率に油脂を生物分解することができる。According to the present invention, since the fats and oils are decomposed at a high temperature and aerobic by utilizing the organic sludge as the waste as described above, the organic sludge is treated and the cost is reduced. Fats and oils can be biodegraded with high efficiency.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中野 和典 茨城県つくば市吾妻４−10−102−405 Ｆターム(参考） 4B065 AA99X AC02 AC20 BB10 BB28 BC32 BC34 BC35 BC41 CA55 4D059 AA03 AA23 BA03 BA22 BA27 DA42 DA61 DB11 DB32 DB33 EB01 EB06 EB16 EB20 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kazunori Nakano 4-10-102-405 F-term (reference) 4B065 AA99X AC02 AC20 BB10 BB28 BC32 BC34 BC35 BC41 CA55 4D059 AA03 AA23 BA03 BA22 BA27 DA42 DA61 DB11 DB32 DB33 EB01 EB06 EB16 EB20
Claims (7)
られた基体に、分解される油脂および有機性汚泥を添加
混合した混合物に、さらに通気しながら前記油脂を高温
好気分解することを特徴とする油脂の生物分解方法。1. A high-temperature aerobic decomposition of said fats and oils while aerating a mixture obtained by adding a fat and an organic sludge to a base obtained by mixing a contact carrier and a fat-decomposing seed bacterium. A method for biodegrading fats and oils, characterized in that:
０℃である請求項１に記載の油脂の生物分解方法。2. The high-temperature aerobic decomposition treatment temperature is 50-7.
The method according to claim 1, wherein the temperature is 0 ° C.
５０時間である請求項１または請求項２に記載の油脂の
生物分解方法。3. The processing time of said high-temperature aerobic decomposition is 24 to 2 hours.
The method for biodegrading fats and oils according to claim 1 or 2, wherein the time is 50 hours.
求項１〜請求項３のうち、何れか１項に記載の油脂の生
物分解方法。4. The biodegradation method for fats and oils according to claim 1, wherein the organic sludge is dried sludge.
量％である請求項１〜請求項４のうち、何れか１項に記
載の油脂の生物分解方法。5. The method for biodegrading fats and oils according to claim 1, wherein the initial water content of the mixture is 40 to 70% by weight.
理汚泥および産業排水処理汚泥の汚泥群から選ばれたも
のである請求項１〜請求項５のうち、何れか１項に記載
の油脂の生物分解方法。6. The organic sludge according to claim 1, wherein the organic sludge is selected from a group of sludges of sewage sludge, anaerobic treated sludge, and industrial wastewater treated sludge. Biodegradation method for fats and oils.
泥（乾燥汚泥換算）／接触担体の重量比で、０．００５
〜０．１である請求項１〜請求項６のうち、何れか１項
に記載の油脂の生物分解方法。7. The mixing ratio of the organic sludge is 0.005 by weight ratio of organic sludge (in terms of dry sludge) / contact carrier.
The biodegradation method for fats and oils according to any one of claims 1 to 6, which is 0.1 to 0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000047165A JP2001232400A (en) | 2000-02-24 | 2000-02-24 | Method for biodegrading oils and fats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000047165A JP2001232400A (en) | 2000-02-24 | 2000-02-24 | Method for biodegrading oils and fats |
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| Publication Number | Publication Date |
|---|---|
| JP2001232400A true JP2001232400A (en) | 2001-08-28 |
Family
ID=18569460
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5317167A (en) * | 1976-07-28 | 1978-02-16 | Niigata Engineering Co Ltd | Process for fermenting organic wastes |
| JPH07194267A (en) * | 1993-12-29 | 1995-08-01 | Toyo Eng Works Ltd | Method for treating raw sewage of livestock |
| JPH0985300A (en) * | 1995-09-27 | 1997-03-31 | Kurita Water Ind Ltd | Treatment of sewage sludge |
| JPH09234454A (en) * | 1995-12-31 | 1997-09-09 | Tsutomu Nishimura | Garbage treating method and machine therefor |
| JPH11165155A (en) * | 1997-12-01 | 1999-06-22 | Asahi Denka Kogyo Kk | Method for treating fat and oil |
| JPH11300394A (en) * | 1998-04-20 | 1999-11-02 | Kurita Water Ind Ltd | High temperature aerobic treatment of dewatered sludge cake |
| JP2000107794A (en) * | 1998-10-07 | 2000-04-18 | Sanei Kogyo Kk | Method and apparatus for treating organic waste |
-
2000
- 2000-02-24 JP JP2000047165A patent/JP2001232400A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5317167A (en) * | 1976-07-28 | 1978-02-16 | Niigata Engineering Co Ltd | Process for fermenting organic wastes |
| JPH07194267A (en) * | 1993-12-29 | 1995-08-01 | Toyo Eng Works Ltd | Method for treating raw sewage of livestock |
| JPH0985300A (en) * | 1995-09-27 | 1997-03-31 | Kurita Water Ind Ltd | Treatment of sewage sludge |
| JPH09234454A (en) * | 1995-12-31 | 1997-09-09 | Tsutomu Nishimura | Garbage treating method and machine therefor |
| JPH11165155A (en) * | 1997-12-01 | 1999-06-22 | Asahi Denka Kogyo Kk | Method for treating fat and oil |
| JPH11300394A (en) * | 1998-04-20 | 1999-11-02 | Kurita Water Ind Ltd | High temperature aerobic treatment of dewatered sludge cake |
| JP2000107794A (en) * | 1998-10-07 | 2000-04-18 | Sanei Kogyo Kk | Method and apparatus for treating organic waste |
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