JPH1129382A - Fermentation treatment of organic waste - Google Patents
Fermentation treatment of organic wasteInfo
- Publication number
- JPH1129382A JPH1129382A JP9184796A JP18479697A JPH1129382A JP H1129382 A JPH1129382 A JP H1129382A JP 9184796 A JP9184796 A JP 9184796A JP 18479697 A JP18479697 A JP 18479697A JP H1129382 A JPH1129382 A JP H1129382A
- Authority
- JP
- Japan
- Prior art keywords
- organic waste
- fermentation
- fermenter
- alkaline substance
- ammonium
- 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
- 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
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Landscapes
- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、家庭，レストラン
などで発生する生ごみ等の有機廃棄物を好気性発酵によ
ってコンポスト化（堆肥化）する有機廃棄物処理装置及
び方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic waste processing apparatus and method for composting (composting) organic waste such as garbage generated in homes and restaurants by aerobic fermentation.
【０００２】[0002]
【従来の技術】近年、生ごみ，食品加工廃棄物，農畜産
廃棄物，下水汚泥等の有機廃棄物を、コンポスト（堆
肥）に変換して有機肥料として再利用しようとする動き
が活発化している。そのためには生成物であるコンポス
トの品質の維持が重要である。未熟なコンポストは植物
の発芽や生育を抑制するため、分解率を高めて、熟成度
の高いコンポストを得ることが必要である。2. Description of the Related Art In recent years, there has been an increasing movement to convert organic waste such as food waste, food processing waste, agricultural and livestock waste, and sewage sludge into compost (compost) for reuse as organic fertilizer. I have. For that purpose, it is important to maintain the quality of the product compost. Since immature compost suppresses germination and growth of plants, it is necessary to increase the decomposition rate and obtain compost having a high maturity.
【０００３】有機廃棄物の分解率を高める方法として、
特開平3−80175号公報には、発酵槽内のｐＨ値が６.５
〜１０ の範囲内になるようにｐＨ調整液を添加するこ
とが記載されている。[0003] As a method of increasing the decomposition rate of organic waste,
JP-A-3-80175 discloses that the pH value in a fermenter is 6.5.
It describes that a pH adjusting solution is added so as to fall within the range of 10 to 10.
【０００４】[0004]
【発明が解決しようとする課題】有機廃棄物の好気性微
生物による発酵処理においては、発酵が進むにつれて発
酵槽内のｐＨが低下する。これはコンポスト化の過程に
おいて、酢酸等の有機酸が生成されるためである。ｐＨ
が５以下になると、好気性微生物の活性が低下し、コン
ポスト化反応がほとんど進行しなくなる。本発明者らの
研究によれば、有機廃棄物の分解率を高めるには、発酵
槽内のｐＨは５〜１０の範囲、より好ましくは６〜９の
範囲に維持するのがよい。ｐＨを調整する方法には、特
開平3− 80175 号公報のように液体のアルカリ物質を添
加する方法の他に、固体のｐＨ調整剤を添加する方法が
ある。In the fermentation treatment of organic waste with aerobic microorganisms, the pH in the fermenter decreases as the fermentation proceeds. This is because an organic acid such as acetic acid is generated during the composting process. pH
Is less than 5, the activity of the aerobic microorganism is reduced, and the composting reaction hardly proceeds. According to the study of the present inventors, in order to increase the decomposition rate of organic waste, the pH in the fermenter is preferably maintained in the range of 5 to 10, more preferably in the range of 6 to 9. As a method of adjusting the pH, there is a method of adding a solid pH adjuster in addition to a method of adding a liquid alkaline substance as disclosed in JP-A-3-80175.
【０００５】しかし、本発明者らは、ｐＨ調整剤とし
て、水酸化ナトリウム，水酸化カリウム，水酸化カルシ
ウム等の金属イオンを含むアルカリ性物質及びその水溶
液を用いた場合には、金属イオンは微生物によって分解
されないため、ｐＨ調整剤を添加し続けると、発酵槽内
の被処理物中に金属イオン（または塩）が蓄積し、この
濃度が高くなると微生物の活性が低下して、ｐＨを上記
範囲内に調整しても、有機廃棄物の分解率を向上できな
いことを見いだした。However, the present inventors have found that when an alkaline substance containing a metal ion such as sodium hydroxide, potassium hydroxide, calcium hydroxide or the like and an aqueous solution thereof are used as a pH adjuster, the metal ion is degraded by microorganisms. Since it is not decomposed, if a pH adjuster is continuously added, metal ions (or salts) accumulate in the material to be treated in the fermenter, and if this concentration increases, the activity of microorganisms decreases, and the pH falls within the above range. It was found that even if adjusted, the decomposition rate of organic waste could not be improved.
【０００６】本発明の目的は、有機廃棄物の分解率を高
めて、熟成度の高い良質のコンポストを生成できる有機
廃棄物の処理方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for treating organic waste, which can increase the decomposition rate of organic waste and produce high-quality compost with a high maturity.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明の有機廃棄物の処理方法においては、有機廃
棄物よりなる被処理物を発酵槽内で好気性微生物によっ
て発酵させる有機廃棄物の発酵処理方法において、発酵
槽内のｐＨを計測し、ｐＨが設定値を下回った場合、窒
素，炭素，酸素及び水素のいずれかからなるアルカリ性
物質を添加するようにした。アルカリ性物質としては、
発酵処理の過程で、アンモニウムイオンもしくはアンモ
ニアを発生させる物質を用いるのが望ましい。このよう
なアルカリ性物質としては、尿素，炭酸アンモニウム，
炭酸水素アンモニウムを単独で、また２種類以上を混合
したものを適宜用いることができる。なお、前記被処理
物のｐＨの設定値を６とし、６を下回った場合にｐＨ調
整剤を添加するのが望ましい。Means for Solving the Problems To achieve the above object, in the method for treating organic waste according to the present invention, an organic waste obtained by fermenting an object to be treated comprising organic waste in a fermentation tank with an aerobic microorganism. In the method of fermenting a product, the pH in the fermenter was measured, and when the pH was lower than a set value, an alkaline substance consisting of nitrogen, carbon, oxygen and hydrogen was added. As alkaline substances,
It is desirable to use a substance that generates ammonium ions or ammonia in the course of the fermentation treatment. Such alkaline substances include urea, ammonium carbonate,
Ammonium hydrogen carbonate can be used alone or in combination of two or more. In addition, it is preferable to set the pH value of the object to be treated to 6, and to add a pH adjuster when the value falls below 6.
【０００８】尿素（ＣＯ(ＮＨ2)2），炭酸アンモニウム
（(ＮＨ4)2ＣＯ3)，炭酸水素アンモニウム（ＮＨ4ＨＣ
Ｏ3）等のアルカリ性物質は、発酵槽内の発酵物に付着
した水に溶解、または加熱下で分解されて、化学式
（１）〜（３）に示すような反応によりアンモニア（Ｎ
Ｈ3）を生じる。[0008] Urea (CO (NH 2 ) 2 ), ammonium carbonate ((NH 4 ) 2 CO 3 ), ammonium hydrogen carbonate (NH 4 HC)
An alkaline substance such as O 3 ) is dissolved in water adhering to the fermented product in the fermenter or is decomposed under heating, and ammonia (N 3) is reacted by a reaction represented by chemical formulas (1) to (3).
H 3 ).
【０００９】[0009]
【化１】 ＣＯ(ＮＨ2)2→ＮＨ3＋Ｈ2ＣＯ3 …（化１）## STR1 ## CO (NH 2 ) 2 → NH 3 + H 2 CO 3 (Formula 1)
【００１０】[0010]
【化２】 (ＮＨ4)2ＣＯ3→２ＮＨ3＋Ｈ2ＣＯ3 …（化２）## STR2 ## (NH 4 ) 2 CO 3 → 2NH 3 + H 2 CO 3 (Formula 2)
【００１１】[0011]
【化３】 ＮＨ4ＨＣＯ3→ＮＨ3＋ＣＯ2＋Ｈ2Ｏ …（化３） 上記反応によって生じたアンモニア(ＮＨ3）は、発酵物
に付着した水に溶解し、化学式（４）に示すようにアン
モニウムイオン（ＮＨ4 +）と水酸化物イオン(ＯＨ-）を
生成し、発酵物のｐＨを高める。付着水中のアンモニウ
ムイオン(ＮＨ4 +-）とアンモニア(ＮＨ3）の存在比率
は、図３に示すようにｐＨによって変化する。NH 4 HCO 3 → NH 3 + CO 2 + H 2 O (Formula 3 ) Ammonia (NH 3 ) generated by the above reaction is dissolved in water adhering to the fermented product, and as shown in the chemical formula (4). ammonium ion (NH 4 +) and hydroxide ions (OH -) generates, raise the pH of the fermented product. The proportion of ammonium ion (NH 4 + − ) and ammonia (NH 3 ) in the attached water changes depending on the pH as shown in FIG.
【００１２】[0012]
【化４】 Embedded image
【００１３】発酵槽内に、尿素（ＣＯ(ＮＨ2)2），炭酸
アンモニウム（(ＮＨ4)2ＣＯ3)，炭酸水素アンモニウム
（ＮＨ4ＨＣＯ3）等のアルカリ性物質を添加すると、ア
ンモニウムイオン（ＮＨ4 +）が増加し、発酵物のｐＨは
上昇する。ｐＨ７以下の中性もしくは弱酸性領域では、
アンモニウムイオン（ＮＨ4 +）の形で存在する。ｐＨが
７を越えアルカリ性が強くなるにつれてアンモニウムイ
オン（ＮＨ4 +）の存在比率が減少し、アンモニア(Ｎ
Ｈ3）が増加する。しかし、ｐＨ９以上ではアンモニア
(ＮＨ3）になって揮発するので、アンモニウムイオン
(ＮＨ4 +-）はある量以上にはならない。すなわち発酵物
のｐＨは、発酵を阻害するような強アルカリ性にはなら
ず、発酵に好適な範囲に維持される。When an alkaline substance such as urea (CO (NH 2 ) 2 ), ammonium carbonate ((NH 4 ) 2 CO 3 ) or ammonium hydrogen carbonate (NH 4 HCO 3 ) is added to the fermenter, ammonium ions ( NH 4 + ) and the pH of the fermentation product increases. In the neutral or weakly acidic region below pH 7,
It exists in the form of ammonium ion (NH 4 + ). As the pH exceeds 7 and the alkalinity increases, the proportion of ammonium ions (NH 4 + ) decreases, and ammonia (N
H 3 ) increases. However, at pH 9 or higher, ammonia
(NH 3 ) and volatilized, ammonium ion
(NH 4 + − ) does not exceed a certain amount. That is, the pH of the fermented product does not become strongly alkaline so as to inhibit fermentation, and is maintained in a range suitable for fermentation.
【００１４】このようにコンポスト化反応の過程で、ア
ンモニアまたはアンモニウムイオンを生じる物質にて発
酵物のｐＨを調整することにより、塩または金属イオン
の蓄積による発酵阻害を受けることなく、発酵物のｐＨ
を発酵に好適な範囲に維持できる。As described above, by adjusting the pH of the fermented product with a substance generating ammonia or ammonium ions in the course of the composting reaction, the pH of the fermented product can be adjusted without being inhibited by the accumulation of salts or metal ions.
Can be maintained in a range suitable for fermentation.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施例を図面を用
いて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１６】（実施例１）図１に、本発明の有機廃棄物
処理方法の一実施例の構成を示す。発酵槽１は、仕切り
板２によって２つの区画は上流側から区画１ａ及び１ｂ
に分けられている。仕切り板２は発酵槽１の底部から垂
直に立ち上がっており、区画１ａと１ｂは発酵槽の上部
でつながっている。区画１ａの上方部分には、有機廃棄
物投入口３及び有機廃棄物投入口３を開閉する蓋４が取
り付けられている。符号５は蓋４の開閉を検出する開閉
センサである。区画１ａの底部には、櫛歯状の固定刃６
が設けられている。区画１ｂの仕切り板２と対向する側
壁７に生成コンポストを排出するための排出口８が設け
られている。排出された生成コンポストは貯留箱９に貯
留される。また、貯留箱９を取り出すための排出扉１０
が、枠体１１の壁面に設けられている。(Embodiment 1) FIG. 1 shows the configuration of an embodiment of the organic waste treatment method of the present invention. The fermenter 1 has two partitions 1a and 1b from the upstream side by a partition plate 2.
Are divided into The partition plate 2 rises vertically from the bottom of the fermenter 1, and the sections 1a and 1b are connected at the upper part of the fermenter. An organic waste input port 3 and a lid 4 for opening and closing the organic waste input port 3 are attached to an upper portion of the section 1a. Reference numeral 5 denotes an opening / closing sensor that detects opening / closing of the lid 4. A comb-shaped fixed blade 6 is provided at the bottom of the section 1a.
Is provided. A discharge port 8 for discharging the generated compost is provided on a side wall 7 of the section 1b facing the partition plate 2. The discharged generated compost is stored in the storage box 9. Also, a discharge door 10 for taking out the storage box 9
Are provided on the wall surface of the frame 11.
【００１７】発酵槽１の中心部には、区画１ｂ及び１ｂ
を貫通して回転軸１２が配設されている。回転軸１２に
は、撹拌腕１３が取り付けられている。回転軸１２は、
一端が駆動手段１４に接続されている。発酵槽１の底部
外壁には、ヒーター（図示せず）が配設されており、発
酵槽１内は有機廃棄物が発酵するのに適した５０〜７０
℃に保持される。At the center of the fermenter 1, the compartments 1b and 1b
, A rotary shaft 12 is provided. A stirring arm 13 is attached to the rotating shaft 12. The rotating shaft 12 is
One end is connected to the driving means 14. A heater (not shown) is provided on the bottom outer wall of the fermenter 1, and the inside of the fermenter 1 has a size of 50 to 70 suitable for fermenting organic waste.
It is kept at ° C.
【００１８】発酵槽１の区画１ａには、気体取り入れ管
１５，熱交換器１６，連結管１７，気体循環器１８及び
気体戻し管１８を循環系として、循環する構造になって
いる。発酵及び加熱によって生じた発酵ガス中の水蒸気
は、熱交換器１６を通過する過程で冷却されて水（凝縮
水）になる。凝縮水はドレイン管２０を通って系外に排
出される。水分除去後の気体（除湿気体）は、連結管１
７，気体循環器１８及び気体戻し管１９を通って、発酵
槽１の区画１ｂ内に導入される。連結管１７の経路上に
分岐管２１が設けられてる。分岐管２１は、ポンプ２２
を介して、脱臭部２３に接続している。臭気を含んだ除
湿後の気体の一部は脱臭部２３にて脱臭処理された後、
系外に排気される。The section 1a of the fermenter 1 has a structure in which a gas intake pipe 15, a heat exchanger 16, a connecting pipe 17, a gas circulator 18, and a gas return pipe 18 are circulated as a circulation system. The steam in the fermentation gas generated by fermentation and heating is cooled in the process of passing through the heat exchanger 16 to become water (condensed water). The condensed water is discharged out of the system through the drain pipe 20. The gas from which moisture has been removed (dehumidified gas)
7. The gas is introduced into the compartment 1b of the fermenter 1 through the gas circulator 18 and the gas return pipe 19. A branch pipe 21 is provided on the path of the connecting pipe 17. The branch pipe 21 includes a pump 22
Is connected to the deodorizing section 23 via a. A part of the dehumidified gas containing the odor is deodorized in the deodorizing section 23,
It is exhausted out of the system.
【００１９】符号２５は窒素，酸素，炭素及び水素から
成るアルカリ性物質２６を貯留するための貯留容器であ
り、あらかじめアルカリ性物質２６を入れておく。ポン
プ，スクリューフィーダ等から成るアルカリ性物質供給
手段２７により、アルカリ性物質２６をアルカリ性物質
導入管２８を介して、所定量発酵槽１の区画（ａ）１ａ
内に供給する。アルカリ性物質には、尿素，炭酸アンモ
ニウム，炭酸水素アンモニウムを単独で、あるいは２種
以上混合したものを適宜用いることができる。Reference numeral 25 denotes a storage container for storing an alkaline substance 26 composed of nitrogen, oxygen, carbon and hydrogen, in which the alkaline substance 26 is previously stored. The alkaline substance supply means 27 including a pump, a screw feeder and the like supplies the alkaline substance 26 through the alkaline substance introduction pipe 28 into a predetermined amount of the compartment (a) 1 a of the fermenter 1.
Supply within. As the alkaline substance, urea, ammonium carbonate, and ammonium hydrogen carbonate can be used alone or in combination of two or more.
【００２０】符号２９はｐＨ検出手段であり、凝縮水の
ｐＨを検知し、その信号を制御手段３０に送る。発酵物
のｐＨと凝縮水のｐＨはほぼ比例関係にあるので、凝縮
水のｐＨを測定することによって、発酵物のｐＨを把握
できる。あらかじめ凝縮水ｐＨと発酵物ｐＨの関係，発
酵物のｐＨ，アルカリ性物質添加量とアルカリ性物質添
加後の発酵物ｐＨとの関係などを実験により求めて、制
御手段３０に入力しておく。アルカリ性物質の供給時間
は適宜設定できるが、発酵槽内に供給された生ごみ等の
有機廃棄物が破砕されて細かくなり、かつ有機廃棄物か
ら浸出した水分によって発酵物の含水率が高くなった、
有機廃棄物供給後３０分〜３時間後が望ましい。Reference numeral 29 denotes a pH detecting means which detects the pH of the condensed water and sends a signal to the control means 30. Since the pH of the fermented product is substantially proportional to the pH of the condensed water, the pH of the fermented product can be grasped by measuring the pH of the condensed water. The relationship between the pH of the condensed water and the pH of the fermented product, the pH of the fermented product, the relationship between the amount of the alkaline substance added and the pH of the fermented product after the addition of the alkaline substance are determined in advance by experiments, and input to the control means 30. The supply time of the alkaline substance can be set as appropriate, but organic waste such as garbage supplied into the fermenter is crushed and finely divided, and the moisture content of the fermented product is increased due to moisture leached from the organic waste. ,
Desirably, 30 minutes to 3 hours after the supply of the organic waste.
【００２１】図２に処理フローの一例を示す。有機廃棄
物投入口３の蓋４の開閉を検知後、凝縮水のｐＨを測定
する。凝縮水のｐＨがあらかじめ定めた値、例えば６を
下回った場合のみ、アルカリ性物質２６を所定時間経過
後発酵槽１内に添加する。FIG. 2 shows an example of the processing flow. After detecting the opening and closing of the lid 4 of the organic waste input port 3, the pH of the condensed water is measured. Only when the pH of the condensed water falls below a predetermined value, for example, 6, the alkaline substance 26 is added into the fermenter 1 after a predetermined time has elapsed.
【００２２】尿素，炭酸アンモニウム，炭酸水素アンモ
ニウム等のアルカリ性物質は、前述したように、発酵物
に付着した水に溶解し、アンモニウムイオン（ＮＨ4 +）
と水酸化物イオン(ＯＨ-）を生成する。付着水中のアン
モニウムイオンとアンモニア(ＮＨ3）の存在比率はｐＨ
と図３に示すような関係にあり、ｐＨが高くなるとアン
モニウムイオンはアンモニアになって揮発しやすくな
る。アンモニウムイオンの増加によってｐＨは増加する
が、アンモニアになって揮発するのでｐＨは９以上には
ならない。また、アンモニウムイオンはある量以上には
蓄積しない。As described above, alkaline substances such as urea, ammonium carbonate, and ammonium hydrogen carbonate are dissolved in water adhering to the fermented product, and ammonium ions (NH 4 + ) are dissolved.
And hydroxide ions (OH -) to generate. The proportion of ammonium ion and ammonia (NH 3 ) in the attached water is pH
And the relationship as shown in FIG. 3. When the pH increases, ammonium ions are converted to ammonia and easily volatilized. Although the pH increases with an increase in ammonium ions, the pH does not become 9 or more because it evaporates as ammonia. Also, ammonium ions do not accumulate beyond a certain amount.
【００２３】本発明によれば、アルカリ性物質として、
コンポスト化の過程で、アンモニア等の気体になって揮
発する物質を用いて発酵物のｐＨを調整しているので、
金属イオン蓄積による発酵阻害を回避しつつ、発酵槽内
の発酵物のｐＨを好気性微生物の活性が高い範囲に維持
できる。According to the present invention, as the alkaline substance,
During the composting process, the pH of the fermented product is adjusted using a substance that evaporates as a gas such as ammonia.
It is possible to maintain the pH of the fermented product in the fermenter within a range in which the activity of the aerobic microorganisms is high, while avoiding fermentation inhibition due to metal ion accumulation.
【００２４】[0024]
【発明の効果】本発明では、コンポスト化反応の過程で
揮発する物質を用いて発酵物のｐＨを調整しているの
で、発酵阻害を受けることなく、発酵物のｐＨを発酵に
適した範囲内に調整できる。これにより、分解率の高い
コンポストを得ることができる。According to the present invention, the pH of the fermented product is adjusted by using a substance that evaporates in the course of the composting reaction. Can be adjusted. Thereby, a compost having a high decomposition rate can be obtained.
【図１】本発明の有機廃棄物処理方法の一実施例の構成
を示す説明図。FIG. 1 is an explanatory diagram showing a configuration of an embodiment of an organic waste treatment method of the present invention.
【図２】図１の装置の動作を示すフローチャート。FIG. 2 is a flowchart showing the operation of the apparatus of FIG.
【図３】ｐＨとアンモニウムイオン，アンモニアの存在
比率との関係を示す特性図。FIG. 3 is a characteristic diagram showing the relationship between the pH and the proportions of ammonium ions and ammonia.
１…発酵槽、１ａ，１ｂ…区画、２…仕切り板、３…廃
棄物投入口、４…蓋、５…開閉センサ、６…固定刃、７
…側壁、８…排出口、９…貯留箱、１０…排出扉、１１
…枠体、１２…回転軸、１３…撹拌腕、１４…駆動手
段、１５…気体取り入れ管、１６…熱交換器、１７…連
結管、１８…気体循環器、１９…気体戻し管、２０…ド
レイン管、２１…分岐管、２２…ポンプ、２３…脱臭部
連絡管、２４…脱臭部、２５…アルカリ性物質貯留容
器、２６…アルカリ性物質、２７…アルカリ性物質供給
手段、２８…アルカリ性物質導入管、２９…ｐＨ検出手
段、３０…制御手段。DESCRIPTION OF SYMBOLS 1 ... Fermentation tank, 1a, 1b ... Section, 2 ... Partition plate, 3 ... Waste inlet, 4 ... Lid, 5 ... Open / close sensor, 6 ... Fixed blade, 7
... side wall, 8 ... outlet, 9 ... storage box, 10 ... discharge door, 11
... Frame, 12 ... Rotating shaft, 13 ... Stirring arm, 14 ... Drive means, 15 ... Gas intake pipe, 16 ... Heat exchanger, 17 ... Connecting pipe, 18 ... Gas circulator, 19 ... Gas return pipe, 20 ... Drain pipe, 21 ... branch pipe, 22 ... pump, 23 ... deodorization section connecting pipe, 24 ... deodorization section, 25 ... alkaline substance storage container, 26 ... alkaline substance, 27 ... alkaline substance supply means, 28 ... alkaline substance introduction pipe, 29: pH detecting means, 30: Control means.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石田 昌彦 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Masahiko Ishida 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Within Hitachi Research Laboratory, Hitachi, Ltd.
Claims (4)
好気性微生物によって発酵させる有機廃棄物の発酵処理
方法において、発酵槽内のｐＨを計測し、ｐＨが設定値
を下回った場合、窒素，炭素，酸素及び水素のいずれか
からなるアルカリ性物質を添加することを特徴とする有
機廃棄物の発酵処理方法。1. A method for fermenting an organic waste in which an object to be treated comprising an organic waste is fermented in an aerobic microorganism in a fermenter, wherein the pH in the fermenter is measured and the pH falls below a set value. A fermentation treatment method for organic waste, comprising adding an alkaline substance comprising any of nitrogen, carbon, oxygen and hydrogen.
処理の過程で、アンモニウムイオンもしくはアンモニア
を発生させる物質であることを特徴とする有機廃棄物の
発酵処理方法。2. The method according to claim 1, wherein the alkaline substance is a substance that generates ammonium ions or ammonia in the course of the fermentation treatment.
は尿素，炭酸アンモニウム，炭酸水素アンモニウムから
選ばれた１種以上の物質であることを特徴とする有機廃
棄物の発酵処理方法。3. The method according to claim 1, wherein the alkaline substance is at least one substance selected from the group consisting of urea, ammonium carbonate, and ammonium bicarbonate.
ｐＨの設定値を６としたことを特徴とする有機廃棄物の
発酵処理方法。4. The fermentation treatment method for organic waste according to claim 1, wherein the set value of the pH of the object is set to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9184796A JPH1129382A (en) | 1997-07-10 | 1997-07-10 | Fermentation treatment of organic waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9184796A JPH1129382A (en) | 1997-07-10 | 1997-07-10 | Fermentation treatment of organic waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1129382A true JPH1129382A (en) | 1999-02-02 |
Family
ID=16159451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9184796A Pending JPH1129382A (en) | 1997-07-10 | 1997-07-10 | Fermentation treatment of organic waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1129382A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010507475A (en) * | 2006-10-27 | 2010-03-11 | ミシェル・マゾン | General waste treatment methods |
-
1997
- 1997-07-10 JP JP9184796A patent/JPH1129382A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010507475A (en) * | 2006-10-27 | 2010-03-11 | ミシェル・マゾン | General waste treatment methods |
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