JP3493723B2 - Fermentation fertilizer treatment method of organic waste - Google Patents
Fermentation fertilizer treatment method of organic wasteInfo
- Publication number
- JP3493723B2 JP3493723B2 JP10533294A JP10533294A JP3493723B2 JP 3493723 B2 JP3493723 B2 JP 3493723B2 JP 10533294 A JP10533294 A JP 10533294A JP 10533294 A JP10533294 A JP 10533294A JP 3493723 B2 JP3493723 B2 JP 3493723B2
- Authority
- JP
- Japan
- Prior art keywords
- organic waste
- fermentation
- excess sludge
- sludge
- fertilizer
- 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 - Fee Related
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Landscapes
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は家庭生ゴミ、魚粗、野菜
滓、草木滓などの有機性廃棄物を発酵させて肥料化する
方法に関する。
【０００２】
【従来の技術】近年、資源の有効利用及び廃棄物の減量
化のために、廃棄物の再利用が広く提唱されるようにな
り、各廃棄物毎にその有効再利用のための開発がなされ
ている。従来、廃棄物のうち家庭生ゴミ、魚粗、野菜
滓、草木滓などの腐敗性の有機性廃棄物については、発
酵処理により、飼料又は肥料として再利用することが主
流である。
【０００３】従来の有機性廃棄物の発酵処理において
は、円滑な発酵を図るため、発酵促進剤（米糠や澱粉
等）や水分調整材（オガクズ、モミガラ、ゼオライト、
パーライト等）及びｐＨ調整剤（石灰、炭酸ソーダ、消
石灰等）等の添加物を有機性廃棄物に混同して発酵を行
っており、また、必要に応じて、発酵菌の添加も行って
いる。
【０００４】
【発明が解決しようとする課題】従来の有機性廃棄物の
発酵肥料化処理法においては、上記添加物や発酵菌の確
保が難しいこと及び添加物の価格が肥料コストに上乗せ
されるなどの問題がある。
【０００５】本発明は上記従来の添加物（発酵促進剤、
水分調整材、ｐＨ調整材、発酵菌等）の問題を解決し、
容易かつ安価に入手可能な添加物の投入で有機性廃棄物
の円滑な発酵処理が可能な方法を提供することを目的と
する。
【０００６】
【課題を解決するための手段】請求項１の有機性廃棄物
の発酵肥料化処理法は、有機性廃棄物を発酵させて肥料
化する方法において、発酵助材として、活性汚泥処理し
た余剰汚泥のみを前記有機性廃棄物に対して乾燥重量で
３０〜５０重量％添加し、余剰汚泥添加後の有機性廃棄
物の水分量を４０〜６５％に調整して発酵することを特
徴とする。
【０００７】以下に本発明を詳細に説明する。
【０００８】請求項１の方法においては、家庭生ゴミ、
魚粗、野菜滓、草木滓などの有機性廃棄物に余剰汚泥を
添加して発酵を行うが、この余剰汚泥の添加形態として
は、乾燥品又は未乾燥品のいずれであっても良い。即
ち、有機性廃棄物の水分量が多い場合には、余剰汚泥を
乾燥して粉末状としたものが好ましく、また、有機性廃
棄物の水分量が少ない場合には、未乾燥の余剰汚泥を用
いるのが好ましい。本発明においては、このように乾燥
品又は未乾燥品の余剰汚泥を選択使用することにより、
余剰汚泥添加混合後の有機性廃棄物の水分量を４０〜６
５％に調整するため、発酵効率の面で有利である。
【０００９】なお、余剰汚泥の乾燥品を用いる場合、余
剰汚泥の大半を占める蛋白質の異常分解を防止するため
に、余剰汚泥の乾燥は１２０℃以下で行なうのが望まし
い。
【００１０】請求項１の方法において、有機性廃棄物に
対する余剰汚泥の添加混合割合は、有機性廃棄物の成分
等によっても異なるが、有機性廃棄物に対して、余剰汚
泥の乾燥重量で３０〜５０重量％とする。有機性廃棄物
に余剰汚泥又は余剰汚泥乾燥品を添加混合した後は、４
０〜２０℃で好気条件下、１４〜６０日程度発酵処理す
ることにより、余剰汚泥の良好な助材効果により、発酵
が円滑に進行し、その他の添加物を必要とすることなく
発酵肥料を効率的に得ることができる。
【００１１】なお、本発明において、余剰汚泥として
は、し尿、下水、食塩、化学等の廃水処理（活性汚泥
法）から排出される活性汚泥の余剰汚泥を用いる。
【００１２】
【作用】従来、活性汚泥処理工程より発生する余剰汚泥
の廃棄物処理としては、有害物質を含有するものを除
き、余剰汚泥を乾燥処理及び発酵処理にて肥料化する方
法が採用されている。この余剰汚泥の発酵に当り、余剰
汚泥中の炭素／窒素比（Ｃ／Ｎ）が１０〜１５程度であ
ることや余剰汚泥自身が分解菌の働きをすること及び発
酵の進行にともないｐＨはアルカリ側に傾く等の性質を
利用し、一次的な発酵終了を極めて早期にかつ順調に行
わせることができる。
【００１３】しかして、得られた余剰汚泥の発酵処理品
については、２〜３日間の発酵処理で植物への発芽及び
成育に全く悪影響を与えない肥料が得られる。
【００１４】一方、有機性廃棄物の発酵処理において
は、その発酵速度は処理する有機性廃棄物によって異な
り、有機性廃棄物中には発酵し易いものもあるが、発酵
し難いものも多く含まれている。一般的には、余剰汚泥
と比較すると、有機廃棄物は発酵速度が遅い等の問題が
ある。これは、有機性廃棄物のＣ／Ｎ比が大きいこと、
発酵に伴うｐＨの低下があること、発酵促進効果が少な
いこと等が原因となっている。
【００１５】本発明においては、有機性廃棄物の発酵処
理において、余剰汚泥を助材として添加することによ
り、円滑な有機性廃棄物の発酵処理を行う。
【００１６】即ち、余剰汚泥の添加により、微生物栄養
剤としてＮ分を補給し、同時に中和剤としてのアルカリ
分を補給し、更に、分解菌を補給するという効果が得ら
れ、有機性廃棄物の円滑な発酵を行える。
【００１７】本発明に従って、有機性廃棄物に余剰汚泥
を添加することにより、発酵促進剤、水分調整材、ｐＨ
調整剤、或いは発酵菌としての作用効果がすべて賄わ
れ、他の添加物の添加は不要となる。このため、廃棄物
である余剰汚泥の有効利用という効果が奏される上に、
有機性廃棄物の発酵のための数種類の添加物の調達の問
題も解消される。
【００１８】
【実施例】以下に実施例を挙げて本発明をより具体的に
説明する。
実施例１
２つの発酵機の各々に有機性廃棄物（家庭生ゴミ、魚
粗、野菜滓の混合物）３ｋｇを投入し、また、一方に
は、発酵助剤として乾燥汚泥（自社活性汚泥廃水処理で
発生した余剰汚泥を１２０℃で乾燥したもの）１ｋｇを
混合投入し（混合後の水分量は６５％）、他方には比較
のため米糠１ｋｇを混合投入し、発酵機外壁温度を５０
℃で一定とし、空気量１リットル／分にて各々発酵させ
た。
【００１９】その結果、図１に示す如く、Ｏ２吸収速度
及びＣＯ２発生速度（発酵熱）に大きな差があり、乾燥
汚泥の優れた助材効果が確認された。
【００２０】
【発明の効果】以上詳述した通り、本発明の有機性廃棄
物の発酵肥料化処理法によれば、有機性廃棄物の発酵助
材として、廃棄物市場にあふれる余剰汚泥を有効利用す
ることにより、低コストにかつ効率的に、工業的有利に
有機性廃棄物を発酵肥料化することができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fermenting organic wastes such as household garbage, fish meal, vegetable residue, plant residue, and the like to produce fertilizer. [0002] In recent years, recycling of waste has been widely proposed for effective use of resources and reduction of waste. Development is being done. 2. Description of the Related Art Conventionally, among organic wastes, spoilage organic wastes such as household garbage, fish meal, vegetable scum, and plant scum have been mainly reused as feed or fertilizer by fermentation treatment. [0003] In the conventional fermentation treatment of organic waste, fermentation accelerators (rice bran, starch, etc.) and moisture regulators (sawdust, peach, zeolite,
Additives such as perlite) and pH adjusters (lime, sodium carbonate, slaked lime, etc.) are mixed with organic waste for fermentation, and if necessary, fermentation bacteria are added. . [0004] In the conventional method of converting organic waste into fermented fertilizer, it is difficult to secure the above-mentioned additives and fermentation bacteria, and the price of the additives is added to the cost of fertilizer. There is such a problem. The present invention relates to the above conventional additives (fermentation accelerator,
Water adjustment material, pH adjustment material, fermentation bacteria, etc.)
It is an object of the present invention to provide a method capable of performing a smooth fermentation treatment of an organic waste by adding an easily and inexpensively available additive. [0006] Means for Solving the Problems] Fermentation fertilizer treatment of organic waste according to claim 1 is a method of composting by fermenting organic waste, as a fermentation aids, activated sludge treatment And
Excess sludge only the dry weight relative to the organic waste was
30-50% by weight of organic waste after adding excess sludge
The fermentation is performed by adjusting the water content of the product to 40 to 65% . [0007] to the present invention in detail described below. [0008] In the method of claim 1, domestic garbage,
Fermentation is performed by adding excess sludge to organic waste such as fish coarse, vegetable residue, plant residue, and the like, and the excess sludge may be added in a dry form or an undried form. That is, when the water content of the organic waste is large, it is preferable to dry the excess sludge into powder, and when the water content of the organic waste is small, undried excess sludge is removed. Preferably, it is used. In the present invention, by selectively using the excess sludge of the dried product or undried product in this way,
The water content of the organic waste after adding and mixing the excess sludge is 40 to 6
To adjusted to 5% is advantageous in terms of efficiency of fermentation. [0009] When using a dried product of the excess sludge, it is desirable to dry the excess sludge at a temperature of 120 ° C or lower in order to prevent abnormal decomposition of the protein that occupies most of the excess sludge. [0010] The method of claim 1, admixed ratio of excess sludge for organic waste varies depending components of the organic waste for organic waste, by dry weight of the excess sludge It shall be the 30 to 50% by weight. After adding and mixing excess sludge or excess sludge dry product to organic waste, 4
Fermentation at 0 to 20 ° C under aerobic conditions for about 14 to 60 days, fermentation proceeds smoothly with a good auxiliary effect of excess sludge, and fermentation fertilizer without the need for other additives Can be obtained efficiently . [0011] The contact in the present invention, the excess sludge, human waste, sewage, brine, Ru have use the excess sludge activated sludge discharged from waste water treatment chemical such as (activated sludge method). Conventionally, as a method for treating excess sludge generated from the activated sludge treatment step, a method has been adopted in which excess sludge is converted into fertilizer by drying and fermentation, except for those containing harmful substances. ing. In the fermentation of the excess sludge, the carbon / nitrogen ratio (C / N) in the excess sludge is about 10 to 15, the excess sludge itself acts as a decomposing bacterium, and the pH of the excess sludge increases with the progress of the fermentation. Utilizing such properties as tilting to the side, the primary fermentation can be completed very quickly and smoothly. [0013] With respect to the fermented product of the obtained excess sludge, a fertilizer which does not have any adverse effect on the germination and growth of plants can be obtained by the fermentation treatment for 2 to 3 days. On the other hand, in the fermentation treatment of organic waste, the fermentation rate varies depending on the organic waste to be treated. Some of the organic wastes are easy to ferment, but many of them are difficult to ferment. Have been. Generally, organic waste has a problem such as a slow fermentation rate as compared with surplus sludge. This is due to the large C / N ratio of organic waste,
This is due to a decrease in pH due to fermentation, a low fermentation promoting effect, and the like. In the present invention, a smooth fermentation treatment of organic waste is performed by adding surplus sludge as an auxiliary agent in the fermentation treatment of organic waste. That is, the addition of excess sludge has the effect of replenishing N as a microbial nutrient, simultaneously replenishing alkali as a neutralizing agent, and replenishing degrading bacteria. Can be fermented smoothly . [0017] In accordance with the present invention, surplus sludge organic waste
By adding a fermentation accelerator, a water conditioner,
All the effects of the regulator or the fermentation bacterium are covered, and the addition of other additives becomes unnecessary. For this reason, in addition to the effect of effective use of surplus sludge as waste,
The problem of procuring several additives for fermentation of organic waste is also eliminated. The present invention will be described more specifically with reference to the following examples. Example 1 Each of two fermenters was charged with 3 kg of organic waste (a mixture of household garbage, fish meal, and vegetable slag), and on the other hand, dried sludge (in-house activated sludge wastewater treatment as a fermentation aid) 1 kg of excess sludge generated at 120 ° C.) was mixed and charged (water content after mixing was 65%), and 1 kg of rice bran was mixed and charged into the other for comparison.
C., and fermented at an air volume of 1 liter / min. As a result, as shown in FIG. 1, there was a large difference between the O 2 absorption rate and the CO 2 generation rate (fermentation heat), and it was confirmed that the dried sludge had an excellent auxiliary effect . As described in detail above, according to the method for converting organic waste into fermented fertilizer of the present invention, the fermentation of organic waste can be assisted.
As a wood, by effectively utilizing the surplus sludge full of waste products, the efficient and low cost, industrially advantageously organic waste can be fermented fertilizer.
【図面の簡単な説明】 【図１】実施例１の結果を示すグラフである。[Brief description of the drawings] FIG. 1 is a graph showing the results of Example 1.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松永 隆昌 山口県宇部市藤曲917−１ (56)参考文献 特開 昭54−138183（ＪＰ，Ａ) 特開 昭54−29758（ＪＰ，Ａ) 特開 昭53−98169（ＪＰ，Ａ) 特開 昭55−85488（ＪＰ，Ａ) 特開 昭58−119396（ＪＰ，Ａ) 特開 昭60−235784（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C05B 1/00 - C05G 5/00 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takamasa Matsunaga 917-1 Fujimagari, Ube City, Yamaguchi Prefecture (56) References JP-A-54-138183 (JP, A) JP-A-54-29758 (JP, A) JP-A-53-98169 (JP, A) JP-A-55-85488 (JP, A) JP-A-58-119396 (JP, A) JP-A-60-235784 (JP, A) (58) Int.Cl. 7 , DB name) C05B 1/00-C05G 5/00
Claims (1)
法において、発酵助材として、活性汚泥処理した余剰汚
泥のみを前記有機性廃棄物に対して乾燥重量で３０〜５
０重量％添加し、余剰汚泥添加後の有機性廃棄物の水分
量を４０〜６５％に調整して発酵することを特徴とする
有機性廃棄物の発酵肥料化処理法。(1) In a method for fermenting organic waste into fertilizer, only excess sludge treated with activated sludge is dried as a fermentation aid with respect to the organic waste. 30-5 by weight
0% by weight, and the water content of organic waste after the addition of excess sludge
A method for converting organic waste into fermented fertilizer, wherein the fermentation is performed by adjusting the amount to 40 to 65% .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10533294A JP3493723B2 (en) | 1994-05-19 | 1994-05-19 | Fermentation fertilizer treatment method of organic waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10533294A JP3493723B2 (en) | 1994-05-19 | 1994-05-19 | Fermentation fertilizer treatment method of organic waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07315973A JPH07315973A (en) | 1995-12-05 |
| JP3493723B2 true JP3493723B2 (en) | 2004-02-03 |
Family
ID=14404776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10533294A Expired - Fee Related JP3493723B2 (en) | 1994-05-19 | 1994-05-19 | Fermentation fertilizer treatment method of organic waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3493723B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09227260A (en) * | 1996-02-27 | 1997-09-02 | Mitsui Eng & Shipbuild Co Ltd | Production of compost |
| JP2010265157A (en) * | 2009-05-18 | 2010-11-25 | Miyashita Foods Co Ltd | Recycling method of surplus sludge and garbage |
-
1994
- 1994-05-19 JP JP10533294A patent/JP3493723B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07315973A (en) | 1995-12-05 |
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