JP2002001384A - Treating method for organic waste water and treating apparatus for the same - Google Patents
Treating method for organic waste water and treating apparatus for the sameInfo
- Publication number
- JP2002001384A JP2002001384A JP2000179944A JP2000179944A JP2002001384A JP 2002001384 A JP2002001384 A JP 2002001384A JP 2000179944 A JP2000179944 A JP 2000179944A JP 2000179944 A JP2000179944 A JP 2000179944A JP 2002001384 A JP2002001384 A JP 2002001384A
- Authority
- JP
- Japan
- Prior art keywords
- solid
- treatment
- liquid
- organic wastewater
- solubilization
- 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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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
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、有機性固形物を含
有する有機性廃水、例えば、食品工場や薬品工場などか
ら排出される有機性固形物を含有する有機性廃水を生物
学的反応を利用して処理する方法及びその処理装置に関
する。The present invention relates to an organic wastewater containing an organic solid, for example, an organic wastewater containing an organic solid discharged from a food factory, a pharmaceutical factory, etc., is subjected to a biological reaction. The present invention relates to a method of processing using the same and a processing apparatus thereof.
【０００２】[0002]
【従来の技術および発明が解決しようとする課題】従来
より、この種の有機性廃水の一般的な処理方法として、
まず、好気性消化法、嫌気性メタン発酵法などの好気性
または嫌気性の微生物分解により有機性汚泥中の有機成
分を生物学的に消化して、有機物を炭酸ガス、メタンガ
スなどのガス成分にまで分解し、次いでかかる生物学的
消化により生じた微生物バイオマス（微生物菌体が主
体）及び未処理の残存汚泥を含んだ処理液を沈殿槽など
で固液分離して上澄としての処理水と濃縮液（汚泥）を
得、その汚泥は適宜の方法で処理されている。たとえ
ば、図１５に示すように、生物処理槽６に導入された下
水などの有機性廃水が、生物処理槽６において好気性条
件にて、微生物による酸化分解反応である生物酸化によ
って、二酸化炭素もしくは水などの無機物に分解され、
生物処理槽６にて処理された廃水は、沈殿槽２５にて処
理水Ａと汚泥Ｂに固液分離され、汚泥Ｂの一部は微生物
源として生物処理槽６に返送されるとともに、残りの汚
泥は余剰汚泥Ｃとして処理されているのが一般的であ
る。2. Description of the Related Art Conventionally, this kind of organic wastewater is generally treated as:
First, organic components in organic sludge are biologically digested by aerobic or anaerobic microbial decomposition such as aerobic digestion and anaerobic methane fermentation to convert organic matter into gas components such as carbon dioxide gas and methane gas. And then subject the treated liquid containing microbial biomass (mainly microbial cells) and untreated residual sludge produced by such biological digestion to solid-liquid separation in a sedimentation tank or the like, and treated with treated water as supernatant. A concentrated liquid (sludge) is obtained, and the sludge is treated by an appropriate method. For example, as shown in FIG. 15, organic wastewater such as sewage introduced into the biological treatment tank 6 is converted into carbon dioxide or carbon dioxide by biological oxidation, which is an oxidative decomposition reaction of microorganisms, under aerobic conditions in the biological treatment tank 6. Decomposed into inorganic substances such as water,
The wastewater treated in the biological treatment tank 6 is solid-liquid separated into treated water A and sludge B in the sedimentation tank 25, and a part of the sludge B is returned to the biological treatment tank 6 as a microbial source, and the remaining sludge is removed. Sludge is generally treated as surplus sludge C.
【０００３】ところが、油脂、蛋白質などの有機性固形
物を含む廃水（例えば、豆腐、湯葉などの製造に伴う廃
水）を通常の活性汚泥処理方法でそのまま処理すると、
発泡が発生し、うまく処理することができない。そこ
で、浮上分離などの固液分離方法により発泡の原因とな
る固形分を分離した後、活性汚泥処理されている。この
方法によれば、固形分を分離することはできても、固形
分に含まれる蛋白質などが貯槽に貯留中に腐敗して悪臭
を発するという公害が発生するため、腐敗を防止するた
めの特別の処理プロセスが必要である。However, if wastewater containing organic solids such as fats and oils and proteins (for example, wastewater from the production of tofu, yuba, etc.) is directly treated by a conventional activated sludge treatment method,
Foaming occurs and cannot be handled well. Therefore, activated sludge treatment is performed after a solid content causing foaming is separated by a solid-liquid separation method such as flotation separation. According to this method, even though solids can be separated, the pollution that proteins and the like contained in the solids rot during storage in the storage tank and generate a bad smell occurs, so that a special method for preventing rot is generated. Process is required.
【０００４】本発明は従来の技術の有するこのような問
題点に鑑みてなされたものであって、その目的は、油
脂、蛋白質などの有機性固形物を含有する有機性廃水
を、簡単な方法で処理することが可能な低コストの有機
性廃水の処理方法及びその処理装置を提供することにあ
る。The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to convert organic wastewater containing organic solids such as fats and oils into a simple method. It is an object of the present invention to provide a low-cost organic wastewater treatment method and a treatment apparatus which can be treated by a method.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本発明は、発泡あるいは腐敗の原因となる有機性固形
物（油脂、蛋白質など）を含有する有機性廃水を固液分
離装置で固形分と上澄液に分離し、この固形分を可溶化
処理装置で可溶化処理して発泡性あるいは腐敗性物質を
分解し、次いで、生物処理装置または後処理装置で処理
することとしている。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an organic wastewater containing organic solid matter (oil, fat, protein, etc.) which causes foaming or decay in a solid-liquid separation apparatus. And a supernatant, and the solid content is solubilized by a solubilization treatment device to decompose the foamable or spoilable substance, and then processed by a biological treatment device or a post-treatment device.
【０００６】このように、本発明によれば、複雑・高価
な処理設備を用いることなく、発泡あるいは腐敗を抑制
して有機性廃水を処理することが可能である。As described above, according to the present invention, it is possible to treat organic wastewater while suppressing foaming or decay without using complicated and expensive treatment facilities.
【０００７】[0007]
【発明の実施の形態】本発明は、有機性固形物を含有す
る有機性廃水を処理する方法において、被処理有機性廃
水を第一固液分離装置で固形分と上澄液に固液分離し、
該固形分を可溶化処理装置で可溶化処理し、可溶化処理
後の処理液と上記上澄液を生物処理装置で生物処理する
ことを特徴とする有機性廃水の処理方法をその要旨とす
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating organic wastewater containing organic solids, wherein the organic wastewater to be treated is separated into a solid and a supernatant by a first solid-liquid separator. And
The gist of the present invention is a method for treating organic wastewater, wherein the solid content is solubilized in a solubilization treatment device, and the treated solution after the solubilization treatment and the supernatant are subjected to biological treatment in a biological treatment device. .
【０００８】本発明は、第一固液分離装置で分離した有
機性固形物を可溶化処理装置で可溶化処理することによ
って発泡性物質を分解し、次いで生物処理するという特
徴を有しており、簡単にして確実に発泡現象を抑制して
有機性廃水を処理することができる。[0008] The present invention is characterized in that an organic solid separated by a first solid-liquid separation device is solubilized by a solubilization treatment device to decompose a foamable substance and then subjected to biological treatment. The organic wastewater can be treated simply and surely by suppressing the foaming phenomenon.
【０００９】そのための処理装置としては、第一固液分
離装置に後続する処理液経路に生物処理装置を配し、第
一固液分離装置から可溶化処理装置を経て生物処理装置
に至る処理液経路を設けた構成のものが好ましい。[0009] As a processing apparatus therefor, a biological processing apparatus is disposed in a processing liquid path following the first solid-liquid separation apparatus, and a processing liquid from the first solid-liquid separation apparatus to the biological processing apparatus via the solubilization processing apparatus. A configuration having a path is preferable.
【００１０】固液分離装置とは、例えば、沈殿装置、浮
上分離装置、遠心分離装置、膜分離装置のごときものを
いう。[0010] The solid-liquid separation device refers to, for example, a sedimentation device, a flotation separation device, a centrifugal separation device, and a membrane separation device.
【００１１】生物処理装置としては、好気性生物処理あ
るいは嫌気性生物処理のいずれの方式のものも適用でき
る。好気性生物処理に用いられる曝気処理装置は、曝気
手段を具備するものであれば散気方式でも機械曝気方式
でもよい。曝気処理は、好気性消化分解が許容されるよ
う、好ましくは、０．１〜０．５ｖｖｍ（ｖｖｍ＝曝気
量／曝気槽容量／min.）の通気量で室温下にて実施され
るが、負荷によっては、これを上回る通気量で、より高
温にて処理してもよい。被処理液は、好ましくは、５．
０〜８．０のｐＨに調整されるとよい。また、曝気処理
装置には、好気的消化分解を促進するために、酵母等の
微生物や、フロック形成を促進するための硫酸アルミニ
ウム、ポリ塩化アルミニウム、塩化第二鉄、硫酸第一鉄
などの凝集剤を添加してもよい。好気性生物処理には、
曝気処理装置以外の好気的処理の可能な装置を使用する
こともできる。また、嫌気性生物処理に用いられる装置
としては、槽内の液を循環することにより攪拌する方
法、生成ガスを循環曝気することにより攪拌する方法、
攪拌翼などの攪拌機を設置する方法、活性微生物固定手
段を有する方法など、活性微生物と処理対象有機性廃水
とを効率的に接触させる手段を具備したものであれば、
使用可能である。As the biological treatment apparatus, any of aerobic biological treatment and anaerobic biological treatment can be applied. The aeration treatment apparatus used for the aerobic biological treatment may be of a diffused type or a mechanical aerated type as long as it has an aeration unit. The aeration treatment is preferably performed at room temperature with an aeration amount of 0.1 to 0.5 vvm (vvm = aeration amount / aeration tank volume / min.) So as to allow aerobic digestion and decomposition. Depending on the load, processing may be performed at a higher temperature with a higher ventilation rate. The liquid to be treated is preferably 5.
It may be adjusted to a pH of 0 to 8.0. In addition, the aeration treatment apparatus includes microorganisms such as yeast to promote aerobic digestion and decomposition, and aluminum sulfate, polyaluminum chloride, ferric chloride, and ferrous sulfate to promote floc formation. A flocculant may be added. For aerobic biological treatment,
A device capable of aerobic treatment other than the aeration treatment device can also be used. Further, as an apparatus used for anaerobic biological treatment, a method of stirring by circulating the liquid in the tank, a method of stirring by circulating aeration of the generated gas,
A method of installing a stirrer such as a stirring blade, a method having an active microorganism fixing means, such as a method having a means for efficiently contacting active microorganisms and the organic wastewater to be treated,
Can be used.
【００１２】可溶化処理では、好熱菌（例えば、バチル
ス・ステアロサーモフィラス等の菌体を添加してもよ
い）によって汚泥の分解が行われるが、酵素分解（例え
ば、プロテアーゼ、リパーゼ、グリコシターゼなどを単
独または組み合わせて添加したもの）などの種々の方法
と組み合わせて実施してもよい。可溶化処理法として、
オゾン法、超音波法、破砕法、熱アルカリ法、紫外線
法、超臨界法、亜臨界法、酸化剤投入法、触媒酸化法な
どを用いてもよい。In the solubilization treatment, the sludge is decomposed by thermophilic bacteria (for example, cells such as Bacillus stearothermophilus may be added), but enzymatic decomposition (for example, protease, lipase, (To which glycosidase or the like is added alone or in combination). As a solubilization treatment method,
An ozone method, an ultrasonic method, a crushing method, a hot alkali method, an ultraviolet method, a supercritical method, a subcritical method, an oxidizing agent charging method, a catalytic oxidation method, or the like may be used.
【００１３】可溶化処理装置における可溶化条件として
は、熱および好熱菌による可溶化を促進するために、例
えば、以下のような条件を採用することができる。 （１）温度：５０〜９０℃ （２）汚泥濃度：１０００mg／リットル以上、好ましくは５
０００mg／リットル以上 （３）ｐＨ：５〜９、好ましくは、７〜８ （４）環境：好気または微好気条件 （５）時間：有機性固形物の可溶化が盛んである（可溶
化率が高い数値を示す）被処理有機性廃水の水力学的滞
留時間（ＨＲＴ）に基づいて決定する。ＨＲＴは、流入
液量と反応槽の有効容積に基づいて求められるもので、
次の関係式で表される。As the solubilization conditions in the solubilization treatment device, for example, the following conditions can be adopted in order to promote solubilization by heat and thermophilic bacteria. (1) Temperature: 50 to 90 ° C. (2) Sludge concentration: 1000 mg / liter or more, preferably 5
(3) pH: 5 to 9, preferably 7 to 8 (4) Environment: aerobic or microaerobic conditions (5) Time: solubilization of organic solids is active (solubilization) The rate is determined based on the hydraulic retention time (HRT) of the treated organic wastewater. HRT is calculated based on the inflow liquid volume and the effective volume of the reaction tank.
It is expressed by the following relational expression.
【００１４】ＨＲＴ＝反応槽容積（リッター）／単位時間当
たりの流入液量（リッター/hr） また、処理水の水質を向上するために、生物処理装置に
後続する処理液経路に第二固液分離装置を設けることが
好ましい。第一固液分離装置と第二固液分離装置は、同
じ種類の装置でもよく、異なる種類の装置でもよい。HRT = reactor volume (liter) / inflow amount per unit time (liter / hr) In order to improve the quality of the treated water, the second solid-liquid is supplied to the treatment liquid path following the biological treatment apparatus. Preferably, a separating device is provided. The first solid-liquid separator and the second solid-liquid separator may be the same type of device or different types of devices.
【００１５】また、生物処理装置における生物処理を円
滑に実行するために、生物処理装置での微生物の保持量
に応じて、第二固液分離装置で分離された汚泥の一部を
生物処理装置に返送することが好ましい。第二固液分離
装置を設けない場合は、生物処理装置内に微生物を保持
するため、担体などを投入するとよい。Further, in order to smoothly carry out the biological treatment in the biological treatment device, a part of the sludge separated by the second solid-liquid separation device is removed according to the amount of microorganisms retained in the biological treatment device. It is preferred to return it to When the second solid-liquid separation device is not provided, a carrier or the like may be added to keep the microorganisms in the biological treatment device.
【００１６】さらに、余剰汚泥の量を低減するために、
第二固液分離装置で分離された汚泥の一部を可溶化処理
装置に返送することが好ましい。Further, in order to reduce the amount of excess sludge,
It is preferable to return a part of the sludge separated by the second solid-liquid separation device to the solubilization treatment device.
【００１７】第一固液分離装置で分離された固形分を可
溶化処理する可溶化処理装置と第二固液分離装置で分離
された汚泥の一部を可溶化処理する可溶化処理装置が異
なれば、固形物の性状に応じて運転条件を別個に設定で
きるので好ましい。The solubilization apparatus for solubilizing the solids separated by the first solid-liquid separator and the solubilization apparatus for solubilizing a part of the sludge separated by the second solid-liquid separator are different. It is preferable if the operating conditions can be set separately according to the properties of the solid matter.
【００１８】そして、可溶化処理装置での処理汚泥量を
適正量にする（処理汚泥量を低減する）ために、第一固
液分離装置または第二固液分離装置で分離された汚泥の
一部を、濃縮装置で濃縮した後に可溶化処理装置に返送
することが好ましい。濃縮装置とは、例えば、遠心濃縮
装置のごときものをいう。Then, in order to make the amount of sludge treated in the solubilization treatment apparatus an appropriate amount (reduce the amount of treated sludge), one of the sludge separated by the first solid-liquid separator or the second solid-liquid separator is used. The part is preferably returned to the solubilization treatment device after being concentrated by the concentration device. The concentrator refers to, for example, a centrifugal concentrator.
【００１９】また、被処理有機性廃水を第一固液分離装
置で固形分と上澄液に固液分離し、該固形分を可溶化処
理装置で可溶化処理し、可溶化処理後の処理液を後処理
装置で後処理し、後処理後の処理液と上記上澄液を生物
処理装置で生物処理することもできる。後処理装置と
は、通常の活性汚泥装置、膜分離活性汚泥装置のごとき
ものをいい、このように、可溶化された処理液を後処理
装置で後処理することにより、生物処理装置へ流入する
処理液の有機物負荷を低減でき、発泡性をより抑制でき
るという効果がある。また、後処理後の処理液と第一固
液分離装置で分離された上澄液を生物処理装置で生物処
理すれば、さらに処理水の水質を向上しうる。この生物
処理装置に後続する処理液経路に第二固液分離装置を設
け、第二固液分離装置で分離された汚泥の一部を生物処
理装置に返送し、あるいは、第二固液分離装置で分離さ
れた汚泥の一部を可溶化処理装置に返送し、または、第
二固液分離装置で分離された汚泥の一部を、濃縮装置で
濃縮した後に可溶化処理装置に返送すれば、同上効果が
あるので好ましい。Further, the organic wastewater to be treated is solid-liquid separated into a solid and a supernatant by a first solid-liquid separator, and the solid is solubilized by a solubilization treatment apparatus. The liquid may be post-treated by a post-treatment device, and the treated solution after the post-treatment and the supernatant may be biologically treated by a biological treatment device. The post-treatment device refers to a device such as a normal activated sludge device or a membrane separation activated sludge device. In this way, after the solubilized treatment liquid is post-treated by the post-treatment device, it flows into the biological treatment device. There is an effect that the organic substance load of the treatment liquid can be reduced and the foaming property can be further suppressed. In addition, if the treatment liquid after the post-treatment and the supernatant separated by the first solid-liquid separation device are subjected to biological treatment in the biological treatment device, the quality of the treated water can be further improved. A second solid-liquid separation device is provided in a processing liquid path following the biological treatment device, and a part of the sludge separated by the second solid-liquid separation device is returned to the biological treatment device, or the second solid-liquid separation device is used. If a part of the sludge separated in is returned to the solubilization treatment device, or if a part of the sludge separated in the second solid-liquid separation device is concentrated in the concentration device and returned to the solubilization treatment device, It is preferable because it has the same effect as above.
【００２０】さらに、係る有機性廃水の処理方法におい
て、後処理後の処理液に生物処理を施さずに外部に放出
する方法によれば、既存の生物処理装置の生物処理に全
く影響を与えずに有機性廃水の処理装置を運転できると
いう効果がある。Further, in the method for treating organic wastewater, the method in which the treated liquid after the post-treatment is discharged to the outside without being subjected to biological treatment has no effect on the biological treatment of the existing biological treatment apparatus. Has the effect that the organic wastewater treatment device can be operated.
【００２１】また、被処理有機性廃水を第一固液分離装
置で固形分と上澄液に固液分離し、該上澄液を生物処理
装置で生物処理し、上記固形分を可溶化処理装置で可溶
化処理し、可溶化処理後の処理液を後処理装置で後処理
し、後処理後の処理液を第二固液分離装置で汚泥と処理
水に固液分離し、第二固液分離装置で分離された汚泥の
一部を可溶化処理装置に返送することもできる。この方
法によれば、可溶化処理液の水質を良好に維持できると
いう効果がある。この第二固液分離装置で分離された処
理水を第一固液分離装置で分離された上澄液に加えたも
のを生物処理装置で生物処理すれば、処理水の水質を極
めて良好に維持することができるという効果がある。生
物処理装置に後続して第三固液分離装置を設ければ、処
理水の水質を極限にまで高めること（清浄化）ができ
る。Further, the organic wastewater to be treated is solid-liquid separated into a solid and a supernatant by a first solid-liquid separator, and the supernatant is subjected to a biological treatment in a biological treatment apparatus to solubilize the solid. The solubilization treatment is performed by the device, the treatment solution after the solubilization treatment is post-treated by the post-treatment device, the treatment solution after the post-treatment is solid-liquid separated into sludge and treatment water by the second solid-liquid separation device, Part of the sludge separated by the liquid separation device can be returned to the solubilization treatment device. According to this method, there is an effect that the water quality of the solubilization treatment liquid can be favorably maintained. If biological water is added to the supernatant separated by the first solid-liquid separator and the treated water separated by the second solid-liquid separator is subjected to biological treatment by the biological treatment apparatus, the quality of the treated water is maintained extremely well. There is an effect that can be. If the third solid-liquid separation device is provided subsequent to the biological treatment device, the quality of the treated water can be increased to the utmost (cleaning).
【００２２】[0022]
【実施例】以下に本発明の実施例を説明する。図１は、
本発明の有機性廃水の処理方法を適用することができる
有機性廃水処理装置の一実施例の概略構成図である。Embodiments of the present invention will be described below. FIG.
BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of one Example of the organic wastewater treatment apparatus which can apply the organic wastewater treatment method of this invention.
【００２３】図１に示すように、原廃水が経路１を経て
第一固液分離装置（沈殿槽）２に導入され、有機性固形
物と上澄液に固液分離される。有機性固形物は経路３を
経て可溶化槽４に導入される。可溶化槽４では、高温条
件で嫌気的もしくは好気的に有機性固形物の可溶化が行
われる。この場合、高温条件にて用いられる嫌気性もし
くは好気性微生物の接種菌体（好熱菌）は、例えば、従
来の嫌気性もしくは好気性消化槽から微生物を培養する
ことによって得られるものである。また、可溶化槽４の
最適温度は、好ましくは、５０〜９０℃の温度範囲とな
るような条件で操作するが、その高温処理対象である有
機性固形物を分解する好熱菌の種類によって異なるもの
であり、例えば、下水余剰汚泥から分離した好熱菌の場
合には、微生物（好熱菌）による可溶化反応と熱による
物理化学的な熱分解の両作用が同時に効率よく十分に生
じうるように、高温条件における温度を５５〜７５℃の
温度範囲、好ましくは約６５℃で操作するようにする。
いずれにしても、微生物（好熱菌）による可溶化反応と
熱による物理化学的な熱分解の両作用が同時に効率よく
十分に生じうるように、微生物の種類に応じて、５０〜
９０℃の温度範囲となるように設定すればよい。ただ
し、好気条件における可溶化の方が、可溶化が速なるの
で好ましい。As shown in FIG. 1, raw wastewater is introduced into a first solid-liquid separator (sedimentation tank) 2 via a path 1 and is separated into an organic solid and a supernatant by solid-liquid separation. The organic solid is introduced into the solubilization tank 4 via the path 3. In the solubilization tank 4, the organic solid is solubilized anaerobically or aerobically under high temperature conditions. In this case, the inoculum of the anaerobic or aerobic microorganism (thermophilic bacterium) used under high temperature conditions is obtained, for example, by culturing the microorganism from a conventional anaerobic or aerobic digestion tank. The optimum temperature of the solubilization tank 4 is preferably operated under the condition of a temperature range of 50 to 90 ° C., but depending on the type of thermophilic bacterium that decomposes the organic solid to be subjected to the high temperature treatment. For example, in the case of thermophilic bacteria separated from excess sewage sludge, both solubilization reaction by microorganisms (thermophilic bacteria) and physicochemical thermal decomposition by heat occur simultaneously and efficiently. The temperature in the high temperature condition is operated in the temperature range of 55-75 ° C, preferably about 65 ° C, as is possible.
In any case, depending on the type of the microorganism, 50 to 50 so that both the solubilization reaction by the microorganism (thermophilic bacterium) and the action of physicochemical thermal decomposition by heat can occur efficiently and sufficiently simultaneously.
What is necessary is just to set so that it may become a temperature range of 90 degreeC. However, solubilization under aerobic conditions is preferred because solubilization is faster.
【００２４】また、可溶化槽４で好気的に微生物処理す
るための装置としては、従来の散気管を具備してなるも
の、嫌気性で微生物分解をするための装置としては、槽
内の液を循環することにより攪拌する方法、生成ガスを
循環曝気することにより攪拌する方法、攪拌翼などの攪
拌機を設置する方法、活性微生物固定手段を有する方法
など、活性微生物と処理対象汚泥とを効率的に接触させ
る手段を具備したものであれば、使用可能である。この
場合、可溶化槽としては、バッチ式、または連続式のい
ずれでも使用可能である。The apparatus for aerobically treating microorganisms in the solubilization tank 4 includes a conventional air diffusion tube, and the apparatus for anaerobically decomposing microorganisms includes: Efficiency of active microorganisms and sludge to be treated, such as a method of stirring by circulating the liquid, a method of stirring by circulating aeration of the generated gas, a method of installing a stirrer such as a stirring blade, a method having an active microorganism fixing means, etc. Any device provided with a means for making a contact can be used. In this case, either a batch type or a continuous type can be used as the solubilization tank.
【００２５】このように、可溶化槽４で可溶化した処理
液は、経路５を経て生物処理槽６に導入され、経路７を
経て第一固液分離装置２から排出される上澄液ととも
に、生物処理槽６にて好気性生物処理が行われる。な
お、好気性生物処理とは、生物酸化によって有機物が二
酸化炭素もしくは水などの無機物に分解されることをい
い、用いられる好気性微生物は、下水浄化のための活性
汚泥法において用いられるグラム陰性またはグラム陽性
桿菌、例えば、シュードモナス属およびバチルス属であ
り、これらの接種菌体は、通常の下水浄化処理プラント
から得られるものである。この場合、生物処理槽６の温
度は、１０〜５０℃、通常は、２０〜３０℃の温度範囲
となるように操作するが、より効率よく処理するには、
高温の方が好ましく、例えば、下水余剰汚泥から分離し
た中温菌を用いる場合には、３５〜４５℃の温度範囲で
操作するようにする。いずれにしても、微生物による酸
化分解反応が効率よく十分に生じうるように、上記温度
範囲の中から最適な温度条件を選択して操作するように
する。なお、この場合、生物処理槽６としては、バッチ
式または連続式のいずれでも使用可能である。As described above, the processing solution solubilized in the solubilization tank 4 is introduced into the biological treatment tank 6 via the path 5, and together with the supernatant discharged from the first solid-liquid separation device 2 via the path 7. The aerobic biological treatment is performed in the biological treatment tank 6. In addition, aerobic biological treatment means that organic substances are decomposed into inorganic substances such as carbon dioxide or water by biological oxidation, and the aerobic microorganisms used are Gram-negative or used in the activated sludge method for sewage purification. Gram-positive rods, such as Pseudomonas and Bacillus, the inoculum of which are obtained from a conventional sewage purification plant. In this case, the temperature of the biological treatment tank 6 is controlled to be in a temperature range of 10 to 50 ° C, usually 20 to 30 ° C.
Higher temperatures are preferred. For example, when using mesophilic bacteria separated from excess sewage sludge, the operation is performed in a temperature range of 35 to 45 ° C. In any case, an optimal temperature condition is selected and operated from the above temperature range so that the oxidative decomposition reaction by the microorganism can efficiently and sufficiently occur. In this case, as the biological treatment tank 6, either a batch type or a continuous type can be used.
【００２６】ついで、このように生物処理槽６で処理さ
れた処理水は、経路８を経て第二固液分離装置（沈殿
槽）９に導入されて固液分離され、固液分離された上澄
液は経路１０を経て放流先の放出基準に従い、必要であ
れば、硝化脱窒もしくはオゾン処理などの三次処理を施
し、河川放流または修景用水などとして利用される。The treated water thus treated in the biological treatment tank 6 is introduced into a second solid-liquid separation device (sedimentation tank) 9 through a path 8 to be separated into a solid and a liquid. The clarified liquid passes through the route 10 and is subjected to tertiary treatment such as nitrification denitrification or ozone treatment, if necessary, according to the discharge standard of the discharge destination, and is used as river discharge or landscape water.
【００２７】一方、第二固液分離装置９で分離された汚
泥の一部は、経路１１を経て経路５に合流して生物処理
槽６に返送されるようになっている。なお、経路１１を
経て送られる汚泥量は生物処理槽６での微生物の保持量
により決定される。On the other hand, a part of the sludge separated by the second solid-liquid separation device 9 joins the route 5 via the route 11 and is returned to the biological treatment tank 6. The amount of sludge sent via the route 11 is determined by the amount of microorganisms held in the biological treatment tank 6.
【００２８】図２は、図１の処理装置において、第二固
液分離装置９で分離された汚泥の一部を経路１２を経て
可溶化槽４に返送するようにしたものである。このよう
にすることで、余剰汚泥量の低減を図ることが可能であ
る。FIG. 2 shows the processing apparatus of FIG. 1 in which a part of the sludge separated by the second solid-liquid separation device 9 is returned to the solubilization tank 4 via the path 12. By doing so, it is possible to reduce the amount of excess sludge.
【００２９】図３は、図２の処理装置において、第二固
液分離装置９から可溶化槽４に至る経路１２に濃縮装置
１３を設けたものである。このようにすることで、可溶
化槽４での汚泥処理量を適正に調整（汚泥処理量を低
減）しうるので、可溶化槽が過大になることなく、設備
コストの増加を抑えることができる。FIG. 3 shows the processing apparatus of FIG. 2 in which a concentrating device 13 is provided on a path 12 from the second solid-liquid separation device 9 to the solubilization tank 4. By doing so, the sludge treatment amount in the solubilization tank 4 can be appropriately adjusted (sludge treatment amount can be reduced), so that the increase in equipment cost can be suppressed without the solubilization tank becoming excessively large. .
【００３０】次に、図１に示すような構成の処理装置に
おいて、以下のような実験条件で可溶化することによ
り、発泡状況、可溶化率および可溶化槽排気ガス中のＣ
Ｏ2 濃度の調査を行ったので、説明する。 （１）実験条件 ａ．実験装置の大きさ 第一固液分離装置の容量 １リットル 生物処理槽の容量 ４０リットル 第二固液分離装置の容量 ７リットル 可溶化槽の容量 ２リットル ｂ．曝気量 生物処理槽 ０．１ｖｖｍ 可溶化槽 ０．５ｖｖｍ ｃ．ｐＨ 原水ｐＨを塩酸で８以下にした。 ｄ．曝気槽の温度 ２０℃ ｅ．ＨＲＴ 生物処理槽 ４日 可溶化槽 １日 ｆ．被処理水の種類 豆腐製造工場の廃水 ｇ．被処理水量 １０リットル／日 ｈ．可溶化槽の温度 ６５℃ 可溶化槽の処理量 ２リットル／日 ｉ．第二固液分離装置から生物処理槽へは、１０リット
ル／日返送した。また、実験装置のポンプ、配管の目詰
まりが起きないように、原廃水は、０．３mmのメッシュ
の篩いを予め通して夾雑物を除去しておいた。 ｊ．実験手順 実験開始当初は、可溶化槽に植菌せずに、熱による可溶
化のみを行った。そして、実験開始から９日目に、可溶
化槽に汚泥可溶化好熱性細菌（バチルスステアロサーモ
フィラス）ＳＰＴ２−１株の培養液２００ミリリットルを種菌
として添加した。 （２）各種調査結果 発泡状況 実験開始から１５日目に以下の表１に示す各処理液の適
量を２リットルのメスシリンダに分取して散気管にて曝
気し、発泡状況を調査した。メスシリンダへの通気量
は、０．５リットル／min.とした。表１にその発泡状況
を示す。Next, in the treatment apparatus having the structure shown in FIG. 1, the foaming state, the solubilization rate and the C in the exhaust gas of the solubilization tank are obtained by solubilization under the following experimental conditions.
A description will be given of an investigation of the O 2 concentration. (1) Experimental conditions a. The size of the experimental apparatus The capacity of the first solid-liquid separator 1 liter The capacity of the biological treatment tank 40 liter The capacity of the second solid-liquid separator 7 liter The capacity of the solubilization tank 2 liters b. Aeration amount Biological treatment tank 0.1 vvm Solubilization tank 0.5 vvm c. pH The pH of the raw water was adjusted to 8 or less with hydrochloric acid. d. Aeration tank temperature 20 ° C e. HRT biological treatment tank 4 days solubilization tank 1 day f. Type of water to be treated Wastewater from tofu manufacturing plant g. Water to be treated 10 liter / day h. Solubilizing tank temperature 65 ° C Solubilizing tank throughput 2 liters / day i. It was returned from the second solid-liquid separator to the biological treatment tank at a rate of 10 liters / day. In addition, in order to prevent clogging of pumps and pipes of the experimental apparatus, the raw wastewater was previously passed through a 0.3 mm mesh sieve to remove impurities. j. Experimental procedure At the beginning of the experiment, only the solubilization by heat was performed without inoculating the solubilization tank. On the ninth day after the start of the experiment, 200 ml of a culture solution of a sludge-solubilized thermophilic bacterium (Bacillus stearothermophilus) SPT2-1 strain was added to the solubilization tank as a seed. (2) Results of Various Investigations Foaming State On the 15th day from the start of the experiment, an appropriate amount of each of the treatment liquids shown in Table 1 below was dispensed into a 2-liter measuring cylinder, aerated with an air diffuser, and the foaming state was investigated. The air flow rate into the measuring cylinder was 0.5 liter / min. Table 1 shows the foaming status.
【００３１】[0031]
【表１】 [Table 1]
【００３２】表１に明らかなように、第一固液分離装置
で分離した有機性固形物は、曝気により、壊れにくい粘
性のある大気泡となったが、可溶化処理することにより
大気泡の生成は少なくなり、原廃水程度まで発泡性は改
善された。生物処理槽での生物処理後には、処理水は上
澄液により希釈されるため、泡の積層は認められなかっ
た。 可溶化率 可溶化槽における可溶化率の推移を図４に示す。図４の
横軸は実験日数を示し、縦軸は可溶化率（％）を示す。
可溶化率は、以下の式で定義される数値である。As is evident from Table 1, the organic solids separated by the first solid-liquid separator became viscous large bubbles which were hard to break by aeration, but were subjected to solubilization treatment to form large bubbles. The generation was reduced and the foamability was improved to the level of raw wastewater. After the biological treatment in the biological treatment tank, the treated water was diluted by the supernatant, and thus no foaming was observed. Solubilization rate The transition of the solubilization rate in the solubilization tank is shown in FIG. The horizontal axis in FIG. 4 indicates the number of days of the experiment, and the vertical axis indicates the solubilization rate (%).
The solubilization rate is a numerical value defined by the following equation.
【００３３】可溶化槽への投入汚泥の固形物濃度をＡと
し、可溶化処理後の汚泥中の固形物濃度をＢとした場
合、 可溶化率＝（（Ａ−Ｂ）／Ａ）×１００ 図４に示すように、汚泥可溶化好熱性細菌の植菌をしな
い９日目までは、固形物はほとんど可溶化されないが、
実験開始から９日目における好熱性細菌の添加により７
０％以上の固形物の可溶化が確認された。 ＣＯ2 濃度 図５は、可溶化槽の排気ガス中のＣＯ2 濃度の推移を示
す。図５の横軸は各実験日における実験時間を示し、縦
軸は可溶化槽の排気ガス中のＣＯ2 濃度（ppm）であ
る。図５において、各符号「□」、「○」、「●」、
「▲」、「■」は、それぞれ、実験開始から５日目、８
日目、１１日目、１５日目、１８日目を示す。好熱菌の
添加の効果により、１１日目以降ではＣＯ2 の発生が顕
著であり、好熱菌が活発に活動していることが推定され
る。なお、「●」、「▲」、「■」の推移図において、
ＣＯ2 濃度の増減が見られるが、ＣＯ2 濃度が上昇する
直前、すなわち、図５において、点ａが有機性固形物を
可溶化槽に添加した時点を示す。 図６、図７は、本発
明の有機性廃水の処理方法を適用することができる有機
性廃水処理装置の別の実施例の概略構成図である。When the solid matter concentration of the sludge fed into the solubilization tank is A and the solid matter concentration in the sludge after the solubilization treatment is B, the solubilization rate = ((A−B) / A) × 100 As shown in FIG. 4, the solids are hardly solubilized until the ninth day when the sludge-solubilized thermophilic bacteria are not inoculated.
The addition of thermophilic bacteria on day 9 from the start of the experiment resulted in 7
Solubilization of solids of 0% or more was confirmed. CO 2 Concentration FIG. 5 shows the transition of the CO 2 concentration in the exhaust gas of the solubilization tank. The abscissa in FIG. 5 indicates the experiment time on each experiment day, and the ordinate indicates the CO 2 concentration (ppm) in the exhaust gas of the solubilization tank. In FIG. 5, each symbol “□”, “○”, “●”,
“▲” and “■” indicate the 5th day and 8th day from the start of the experiment, respectively.
Day 11, day 15, day 15 and day 18 are shown. Due to the effect of the addition of the thermophilic bacterium, the generation of CO 2 is remarkable after the 11th day, and it is presumed that the thermophilic bacterium is actively active. In addition, in the transition diagram of “●”, “▲”, and “■”,
Although the increase and decrease of the CO 2 concentration are observed, just before the CO 2 concentration increases, that is, in FIG. 5, point a indicates the time when the organic solid is added to the solubilization tank. 6 and 7 are schematic configuration diagrams of another embodiment of an organic wastewater treatment apparatus to which the method for treating organic wastewater of the present invention can be applied.
【００３４】図６に示すように、第一固液分離装置２で
分離された固形分を可溶化処理する可溶化槽１４と第二
固液分離装置９で分離された汚泥の一部を可溶化処理す
る可溶化処理槽４が異なれば、固形物の性状に応じて運
転条件を別個に設定できるので好ましい。As shown in FIG. 6, a solubilization tank 14 for solubilizing the solid separated in the first solid-liquid separator 2 and a part of the sludge separated in the second solid-liquid separator 9 are used. Different solubilization tanks 4 for solubilization are preferred because operating conditions can be set separately according to the properties of the solids.
【００３５】図７に示すように、第一固液分離装置２か
ら可溶化槽１４に至る経路１５に濃縮装置１６を設けれ
ば、可溶化槽１４での汚泥処理量を適正に調整（汚泥処
理量を低減）しうるので、可溶化槽が過大になることな
く、設備コストの増加を抑えることができる。As shown in FIG. 7, if a concentrator 16 is provided in a path 15 from the first solid-liquid separation device 2 to the solubilization tank 14, the sludge treatment amount in the solubilization tank 14 is appropriately adjusted (sludge). (Reduction in processing amount), so that an increase in equipment cost can be suppressed without increasing the size of the solubilization tank.
【００３６】図８は、本発明の有機性廃水の処理方法を
適用することができる有機性廃水処理装置のさらに別の
実施例の概略構成図である。FIG. 8 is a schematic structural view of still another embodiment of an organic wastewater treatment apparatus to which the method for treating organic wastewater of the present invention can be applied.
【００３７】図８に示すように、原廃水が経路１を経て
第一固液分離装置（沈殿槽）２に導入され、有機性固形
物と上澄液に固液分離される。有機性固形物は経路３を
経て可溶化槽４に導入される。可溶化槽４で高温条件で
嫌気的もしくは好気的に可溶化された処理液は後処理装
置（後曝気槽）１７に導入され、可溶化された有機物は
後処理装置１７において生物化学的酸化により無機化さ
れる。後処理された処理液は、経路１８を経て生物処理
槽６に導入される。この有機性廃水処理装置によれば、
生物処理槽６に流入する処理液の有機物負荷が低減さ
れ、発泡性をより抑制できるという効果がある。As shown in FIG. 8, raw wastewater is introduced into a first solid-liquid separator (sedimentation tank) 2 through a path 1 and is separated into an organic solid and a supernatant by solid-liquid separation. The organic solid is introduced into the solubilization tank 4 via the path 3. The processing solution solubilized anaerobically or aerobically under high temperature conditions in the solubilization tank 4 is introduced into a post-treatment device (post-aeration tank) 17, and the solubilized organic matter is subjected to biochemical oxidation in the post-treatment device 17. Is mineralized. The post-treated treatment liquid is introduced into the biological treatment tank 6 via the path 18. According to this organic wastewater treatment device,
The organic matter load of the treatment liquid flowing into the biological treatment tank 6 is reduced, and the foaming property can be further suppressed.
【００３８】図９は、図８の生物処理槽６に後続する処
理液経路に第二固液分離装置９を設け、第二固液分離装
置９で分離された汚泥の一部を経路１９を経て生物処理
槽６に返送し、図１０は、図９の第二固液分離装置９で
分離された汚泥の一部を経路２０を経て可溶化槽４に返
送し、図１１は、図９の第二固液分離装置９で分離され
た汚泥の一部を経路２０を経て濃縮装置２１で濃縮した
後に可溶化槽４に返送するように構成したものである。FIG. 9 shows that a second solid-liquid separator 9 is provided in the treatment liquid path following the biological treatment tank 6 of FIG. 8 and a part of the sludge separated by the second solid-liquid separation apparatus 9 is passed through a path 19. 10 returns the sludge separated by the second solid-liquid separation device 9 of FIG. 9 to the solubilization tank 4 via the path 20. FIG. A part of the sludge separated by the second solid-liquid separation device 9 is concentrated by the concentration device 21 through the path 20 and then returned to the solubilization tank 4.
【００３９】図１２は、図８の後処理後の処理液を生物
処理槽６に導入せずに外部に放出するもので、この有機
性廃水処理装置によれば、既存の生物処理槽６の生物処
理に影響を与えることがないという効果がある。FIG. 12 shows that the treated liquid after the post-treatment shown in FIG. 8 is discharged to the outside without being introduced into the biological treatment tank 6. According to this organic wastewater treatment apparatus, the existing biological treatment tank 6 This has the effect of not affecting biological treatment.
【００４０】図１３は、図１２の後処理装置１７に後続
する処理液経路に第二固液分離装置（沈殿槽）２２を設
け、第二固液分離装置２２で固液分離された汚泥の一部
を経路２３を経て可溶化槽４に返送するようにしたもの
である。この有機性廃水処理装置によれば、図１２の有
機性廃水処理装置に比べ、可溶化処理液の水質をより向
上しうるという効果がある。FIG. 13 shows that a second solid-liquid separator (sedimentation tank) 22 is provided in the processing liquid path following the post-processing device 17 in FIG. A part is returned to the solubilization tank 4 via the path 23. According to this organic wastewater treatment apparatus, there is an effect that the water quality of the solubilized liquid can be further improved as compared with the organic wastewater treatment apparatus of FIG.
【００４１】図１４は、図１３の第二固液分離装置２２
で分離された処理水を経路２４を経て第一固液分離装置
２で分離された上澄液に加えたものを生物処理槽６で生
物処理するように構成したものである。このようにする
ことで、処理水の水質を極めて良好に維持することがで
きるという効果がある。FIG. 14 shows the second solid-liquid separator 22 of FIG.
The biological water is configured to be subjected to biological treatment in the biological treatment tank 6 by adding the treated water separated in the step (1) to the supernatant separated in the first solid-liquid separator 2 via the path 24. By doing so, there is an effect that the quality of the treated water can be maintained extremely well.
【００４２】[0042]
【発明の効果】本発明は上記のように構成されているの
で、次の効果を奏する。As described above, the present invention has the following advantages.
【００４３】請求項１記載の発明によれば、油脂、蛋白
質などの有機性固形物を含有する有機性廃水を、簡単な
方法で処理することが可能な低コストの有機性廃水の処
理方法を提供することができる。According to the first aspect of the present invention, there is provided a low-cost organic wastewater treatment method capable of treating organic wastewater containing organic solids such as fats and oils by a simple method. Can be provided.
【００４４】請求項２記載の発明によれば、処理水の水
質を向上することができる。According to the second aspect of the invention, the quality of the treated water can be improved.
【００４５】請求項３記載の発明によれば、生物処理装
置内の微生物量を適正に維持することができる。According to the third aspect of the present invention, the amount of microorganisms in the biological treatment device can be properly maintained.
【００４６】請求項４記載の発明によれば、余剰汚泥量
を低減することができる。According to the fourth aspect of the invention, the amount of excess sludge can be reduced.
【００４７】請求項５記載の発明によれば、固形物の性
状に応じて可溶化処理装置の運転条件を別個に設定でき
るという効果がある。According to the fifth aspect of the present invention, there is an effect that the operating conditions of the solubilizing apparatus can be set separately according to the properties of the solid matter.
【００４８】請求項６、７記載の発明によれば、可溶化
処理装置を過大にすることなく、可溶化処理することが
できる。According to the sixth and seventh aspects of the present invention, the solubilization treatment can be performed without increasing the size of the solubilization treatment device.
【００４９】請求項８記載の発明によれば、生物処理装
置へ流入する処理液の有機物負荷が低減され、発泡性を
より抑制できるという効果がある。According to the eighth aspect of the present invention, there is an effect that the organic substance load of the treatment liquid flowing into the biological treatment apparatus is reduced, and the foaming property can be further suppressed.
【００５０】請求項９記載の発明によれば、処理水の水
質を向上することができる。According to the ninth aspect, the quality of the treated water can be improved.
【００５１】請求項１０記載の発明によれば、生物処理
装置内の微生物量を適正に維持することができる。According to the tenth aspect, the amount of microorganisms in the biological treatment device can be properly maintained.
【００５２】請求項１１記載の発明によれば、余剰汚泥
量を低減することができる。According to the eleventh aspect, the amount of excess sludge can be reduced.
【００５３】請求項１２記載の発明によれば、可溶化処
理装置を過大にすることなく、可溶化処理することがで
きる。According to the twelfth aspect of the present invention, the solubilization treatment can be performed without increasing the size of the solubilization treatment device.
【００５４】請求項１３記載の発明によれば、既存の生
物処理装置の生物処理に全く影響を与えずに有機性廃水
の処理装置を運転できるという効果がある。According to the thirteenth aspect of the present invention, there is an effect that the organic wastewater treatment device can be operated without affecting the biological treatment of the existing biological treatment device at all.
【００５５】請求項１４記載の発明によれば、可溶化処
理液の水質を向上しうるという効果がある。According to the fourteenth aspect, there is an effect that the water quality of the solubilized solution can be improved.
【００５６】請求項１５記載の発明によれば、処理水の
水質を極めて良好に維持しうるという効果がある。According to the fifteenth aspect, there is an effect that the quality of the treated water can be maintained extremely well.
【００５７】請求項１６記載の発明によれば、請求項１
記載の処理方法を実施するに好適な処理装置を提供する
ことができる。According to the sixteenth aspect of the present invention, the first aspect
A processing apparatus suitable for performing the processing method described above can be provided.
【００５８】請求項１７記載の発明によれば、請求項２
記載の処理方法を実施するに好適な処理装置を提供する
ことができる。According to the seventeenth aspect, the second aspect is provided.
A processing apparatus suitable for performing the processing method described above can be provided.
【００５９】請求項１８記載の発明によれば、請求項３
記載の処理方法を実施するに好適な処理装置を提供する
ことができる。According to the eighteenth aspect, the third aspect is provided.
A processing apparatus suitable for performing the processing method described above can be provided.
【００６０】請求項１９記載の発明によれば、請求項４
記載の処理方法を実施するに好適な処理装置を提供する
ことができる。According to the nineteenth aspect, the fourth aspect is provided.
A processing apparatus suitable for performing the processing method described above can be provided.
【００６１】請求項２０記載の発明によれば、請求項５
記載の処理方法を実施するに好適な処理装置を提供する
ことができる。According to the twentieth aspect, according to the fifth aspect,
A processing apparatus suitable for performing the processing method described above can be provided.
【００６２】請求項２１記載の発明によれば、請求項６
記載の処理方法を実施するに好適な処理装置を提供する
ことができる。According to the twenty-first aspect, the sixth aspect is provided.
A processing apparatus suitable for performing the processing method described above can be provided.
【００６３】請求項２２記載の発明によれば、請求項７
記載の処理方法を実施するに好適な処理装置を提供する
ことができる。According to the invention of claim 22, according to claim 7,
A processing apparatus suitable for performing the processing method described above can be provided.
【００６４】請求項２３記載の発明によれば、請求項８
記載の処理方法を実施するに好適な処理装置を提供する
ことができる。According to the twenty-third aspect of the present invention, the eighth aspect is provided.
A processing apparatus suitable for performing the processing method described above can be provided.
【００６５】請求項２４記載の発明によれば、請求項９
記載の処理方法を実施するに好適な処理装置を提供する
ことができる。According to the twenty-fourth aspect, in the ninth aspect,
A processing apparatus suitable for performing the processing method described above can be provided.
【００６６】請求項２５記載の発明によれば、請求項１
０記載の処理方法を実施するに好適な処理装置を提供す
ることができる。According to the invention of claim 25, claim 1 is
0 can provide a processing apparatus suitable for carrying out the processing method.
【００６７】請求項２６記載の発明によれば、請求項１
１記載の処理方法を実施するに好適な処理装置を提供す
ることができる。According to the twenty-sixth aspect, the first aspect is provided.
It is possible to provide a processing apparatus suitable for performing the processing method described in 1.
【００６８】請求項２７記載の発明によれば、請求項１
２記載の処理方法を実施するに好適な処理装置を提供す
ることができる。According to the twenty-seventh aspect, the first aspect is provided.
A processing apparatus suitable for performing the processing method described in Item 2 can be provided.
【００６９】請求項２８記載の発明によれば、請求項１
３記載の処理方法を実施するに好適な処理装置を提供す
ることができる。According to the twenty-eighth aspect of the present invention, the first aspect is provided.
A processing apparatus suitable for performing the processing method described in Item 3 can be provided.
【００７０】請求項２９記載の発明によれば、請求項１
４記載の処理方法を実施するに好適な処理装置を提供す
ることができる。According to the invention of claim 29, claim 1
A processing apparatus suitable for implementing the processing method described in Item 4 can be provided.
【００７１】請求項３０記載の発明によれば、請求項１
５記載の処理方法を実施するに好適な処理装置を提供す
ることができる。According to the invention of claim 30, claim 1
A processing apparatus suitable for carrying out the processing method described in Item 5 can be provided.
【図１】本発明の有機性廃水の処理方法を適用すること
ができる有機性廃水の処理装置の一実施例の概略構成図
である。FIG. 1 is a schematic configuration diagram of an embodiment of an organic wastewater treatment apparatus to which an organic wastewater treatment method of the present invention can be applied.
【図２】本発明の有機性廃水の処理方法を適用すること
ができる有機性廃水の処理装置の別の実施例の概略構成
図であるFIG. 2 is a schematic configuration diagram of another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図３】本発明の有機性廃水の処理方法を適用すること
ができる有機性廃水の処理装置のさらに別の実施例の概
略構成図である。FIG. 3 is a schematic configuration diagram of still another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図４】本発明の有機性廃水の処理方法を実施した場合
において、可溶化率の推移を示す図である。FIG. 4 is a diagram showing a change in the solubilization rate when the method for treating organic wastewater of the present invention is performed.
【図５】本発明の有機性廃水の処理方法を実施した場合
において、可溶化槽の排気ガス中のＣＯ2 濃度の推移を
示す図である。FIG. 5 is a diagram showing the transition of the CO 2 concentration in the exhaust gas of the solubilization tank when the method for treating organic wastewater of the present invention is performed.
【図６】本発明の有機性廃水の処理方法を適用すること
ができる有機性廃水の処理装置のさらに別の実施例の概
略構成図である。FIG. 6 is a schematic configuration diagram of still another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図７】本発明の有機性廃水の処理方法を適用すること
ができる有機性廃水の処理装置のさらに別の実施例の概
略構成図である。FIG. 7 is a schematic configuration diagram of still another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図８】本発明の有機性廃水の処理方法を適用すること
ができる有機性廃水の処理装置のさらに別の実施例の概
略構成図である。FIG. 8 is a schematic configuration diagram of still another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図９】本発明の有機性廃水の処理方法を適用すること
ができる有機性廃水の処理装置のさらに別の実施例の概
略構成図である。FIG. 9 is a schematic configuration diagram of still another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図１０】本発明の有機性廃水の処理方法を適用するこ
とができる有機性廃水の処理装置のさらに別の実施例の
概略構成図である。FIG. 10 is a schematic configuration diagram of still another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図１１】本発明の有機性廃水の処理方法を適用するこ
とができる有機性廃水の処理装置のさらに別の実施例の
概略構成図である。FIG. 11 is a schematic configuration diagram of still another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図１２】本発明の有機性廃水の処理方法を適用するこ
とができる有機性廃水の処理装置のさらに別の実施例の
概略構成図である。FIG. 12 is a schematic configuration diagram of still another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図１３】本発明の有機性廃水の処理方法を適用するこ
とができる有機性廃水の処理装置のさらに別の実施例の
概略構成図である。FIG. 13 is a schematic configuration diagram of still another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図１４】本発明の有機性廃水の処理方法を適用するこ
とができる有機性廃水の処理装置のさらに別の実施例の
概略構成図である。FIG. 14 is a schematic configuration diagram of still another embodiment of an organic wastewater treatment apparatus to which the organic wastewater treatment method of the present invention can be applied.
【図１５】従来の有機性廃水の処理装置の概略構成図で
ある。FIG. 15 is a schematic configuration diagram of a conventional organic wastewater treatment apparatus.
２…第一固液分離装置 ４、１４…可溶化槽 ６…生物処理槽 ９、２２…第二固液分離装置 １３、１６、２１…濃縮装置 １７…後処理装置 2: first solid-liquid separator 4, 14: solubilization tank 6: biological treatment tank 9, 22: second solid-liquid separator 13, 16, 21: concentrator 17: post-treatment
───────────────────────────────────────────────────── フロントページの続き (72)発明者 赤司 昭 兵庫県神戸市垂水区南多聞台４丁目１番24 −603 (72)発明者 塩田 憲明 兵庫県明石市魚住町住吉２−26−３ Ｆターム(参考） 4D028 AB03 AC01 BC17 BC18 BD00 BD11 BD16 BD17 BE01 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akira Akashi 4-1-24-1 Minami Tamondai, Tarumizu-ku, Kobe City, Hyogo Prefecture Term (Reference) 4D028 AB03 AC01 BC17 BC18 BD00 BD11 BD16 BD17 BE01
Claims (30)
理する方法において、被処理有機性廃水を第一固液分離
装置で固形分と上澄液に固液分離し、該固形分を可溶化
処理装置で可溶化処理し、可溶化処理後の処理液と上記
上澄液を生物処理装置で生物処理することを特徴とする
有機性廃水の処理方法。1. A method for treating organic wastewater containing organic solids, wherein the organic wastewater to be treated is solid-liquid separated into a solid and a supernatant by a first solid-liquid separator, and the solid is separated. A method for treating organic wastewater, comprising solubilizing with a solubilization treatment device, and subjecting the treated solution after solubilization treatment and the supernatant to biological treatment with a biological treatment device.
で処理水と汚泥に固液分離することを特徴とする請求項
１記載の有機性廃水の処理方法。2. The method for treating organic wastewater according to claim 1, wherein the treated liquid after biological treatment is separated into treated water and sludge by a second solid-liquid separator.
部を生物処理装置に返送することを特徴とする請求項２
記載の有機性廃水の処理方法。3. A part of the sludge separated by the second solid-liquid separation device is returned to the biological treatment device.
A method for treating organic wastewater as described in the above.
部を可溶化処理装置に返送することを特徴とする請求項
２または３記載の有機性廃水の処理方法。4. The method for treating organic wastewater according to claim 2, wherein a part of the sludge separated by the second solid-liquid separation device is returned to the solubilization treatment device.
可溶化処理する可溶化処理装置と第二固液分離装置で分
離された汚泥の一部を可溶化処理する可溶化処理装置が
異なることを特徴とする請求項４記載の有機性廃水の処
理方法。5. A solubilization apparatus for solubilizing solids separated by a first solid-liquid separator and a solubilization apparatus for solubilizing a part of sludge separated by a second solid-liquid separator. 5. The method for treating organic wastewater according to claim 4, wherein
部を、濃縮装置で濃縮した後に可溶化処理装置に返送す
ることを特徴とする請求項４または５記載の有機性廃水
の処理方法。6. The organic wastewater according to claim 4, wherein a part of the sludge separated by the second solid-liquid separation device is returned to the solubilization treatment device after being concentrated by the concentration device. Processing method.
部を、濃縮装置で濃縮した後に可溶化処理装置に供給す
ることを特徴とする請求項１、２、３、４、５または６
記載の有機性廃水の処理方法。7. The method according to claim 1, wherein a part of the sludge separated by the first solid-liquid separation device is supplied to a solubilization treatment device after being concentrated by a concentration device. Or 6
A method for treating organic wastewater as described in the above.
理する方法において、被処理有機性廃水を第一固液分離
装置で固形分と上澄液に固液分離し、該固形分を可溶化
処理装置で可溶化処理し、可溶化処理後の処理液を後処
理装置で後処理し、後処理後の処理液と上記上澄液を生
物処理装置で生物処理することを特徴とする有機性廃水
の処理方法。8. A method for treating organic wastewater containing organic solids, wherein the organic wastewater to be treated is solid-liquid separated into a solid and a supernatant by a first solid-liquid separator, and the solid is separated. The solubilization treatment is performed by a solubilization treatment device, the treatment solution after the solubilization treatment is post-treated by a post-treatment device, and the treatment solution after the post-treatment and the supernatant are biologically treated by a biological treatment device. Organic wastewater treatment method.
で処理水と汚泥に固液分離することを特徴とする請求項
８記載の有機性廃水の処理方法。9. The method for treating organic wastewater according to claim 8, wherein the treated liquid after the biological treatment is separated into treated water and sludge by a second solid-liquid separator.
一部を生物処理装置に返送することを特徴とする請求項
９記載の有機性廃水の処理方法。10. The method for treating organic wastewater according to claim 9, wherein a part of the sludge separated by the second solid-liquid separation device is returned to the biological treatment device.
一部を可溶化処理装置に返送することを特徴とする請求
項９または１０記載の有機性廃水の処理方法。11. The method for treating organic wastewater according to claim 9, wherein a part of the sludge separated by the second solid-liquid separation device is returned to the solubilization treatment device.
一部を、濃縮装置で濃縮した後に可溶化処理装置に返送
することを特徴とする請求項１０または１１記載の有機
性廃水の処理方法。12. The organic wastewater according to claim 10, wherein a part of the sludge separated by the second solid-liquid separation device is returned to the solubilization treatment device after being concentrated by the concentration device. Processing method.
処理する方法において、被処理有機性廃水を第一固液分
離装置で固形分と上澄液に固液分離し、該固形分を可溶
化処理装置で可溶化処理し、可溶化処理後の処理液を後
処理装置で後処理し、上記上澄液を生物処理装置で生物
処理することを特徴とする有機性廃水の処理方法。13. A method for treating an organic wastewater containing an organic solid, wherein the organic wastewater to be treated is solid-liquid separated into a solid and a supernatant by a first solid-liquid separator, and the solid is separated. A method for treating organic wastewater, comprising solubilizing with a solubilization treatment device, post-treating the treated solution after solubilization with a post-treatment device, and biologically treating the supernatant with a biological treatment device.
処理する方法において、被処理有機性廃水を第一固液分
離装置で固形分と上澄液に固液分離し、該上澄液を生物
処理装置で生物処理し、上記固形分を可溶化処理装置で
可溶化処理し、可溶化処理後の処理液を後処理装置で後
処理し、後処理後の処理液を第二固液分離装置で汚泥と
処理水に固液分離し、第二固液分離装置で分離された汚
泥の一部を可溶化処理装置に返送することを特徴とする
有機性廃水の処理方法。14. A method for treating organic wastewater containing organic solids, wherein the organic wastewater to be treated is solid-liquid separated into a solid content and a supernatant by a first solid-liquid separator. Is subjected to a biological treatment in a biological treatment device, the solid content is solubilized in a solubilization treatment device, the treatment solution after the solubilization treatment is post-treated in a post-treatment device, and the treatment solution after the post-treatment is treated as a second solid-liquid. A method for treating organic wastewater, comprising: separating solid and liquid into sludge and treated water by a separation device; and returning a part of the sludge separated by the second solid / liquid separation device to a solubilization treatment device.
を第一固液分離装置で分離された上澄液に加えたものを
生物処理装置で生物処理することを特徴とする請求項１
４記載の有機性廃水の処理方法。15. A biological treatment apparatus, wherein treated water separated by the second solid-liquid separator is added to the supernatant separated by the first solid-liquid separator. 1
4. The method for treating organic wastewater according to 4.
処理する装置であって、第一固液分離装置に後続する処
理液経路に生物処理装置を配し、第一固液分離装置から
可溶化処理装置を経て生物処理装置に至る処理液経路を
設けたことを特徴とする有機性廃水の処理装置。16. An apparatus for treating organic wastewater containing organic solids, wherein a biological treatment apparatus is disposed in a treatment liquid path subsequent to the first solid-liquid separation apparatus, and wherein the biological treatment apparatus is disposed from the first solid-liquid separation apparatus. An organic wastewater treatment apparatus, wherein a treatment liquid path from a solubilization treatment apparatus to a biological treatment apparatus is provided.
第二固液分離装置を設けたことを特徴とする請求項１６
記載の有機性廃水の処理装置。17. The apparatus according to claim 16, wherein a second solid-liquid separation device is provided in a treatment liquid path following the biological treatment device.
An organic wastewater treatment apparatus as described in the above.
至る処理液の返送経路を設けたことを特徴とする請求項
１７記載の有機性廃水の処理装置。18. The organic wastewater treatment apparatus according to claim 17, wherein a return path for a treatment liquid from the second solid-liquid separation device to the biological treatment device is provided.
に至る処理液の返送経路を設けたことを特徴とする請求
項１７または１８記載の有機性廃水の処理装置。19. The organic wastewater treatment apparatus according to claim 17, wherein a return path for a treatment liquid from the second solid-liquid separation device to the solubilization treatment device is provided.
を可溶化処理する可溶化処理装置と第二固液分離装置で
分離された汚泥の一部を可溶化処理する可溶化処理装置
が異なることを特徴とする請求項１９記載の有機性廃水
の処理装置。20. A solubilization device for solubilizing a solid separated by a first solid-liquid separator and a solubilization device for solubilizing a part of sludge separated by a second solid-liquid separator. 20. The organic wastewater treatment apparatus according to claim 19, wherein
に至る処理液の返送経路に濃縮装置を設けたことを特徴
とする請求項１９または２０記載の有機性廃水の処理装
置。21. The organic wastewater treatment apparatus according to claim 19, wherein a concentration apparatus is provided in a return path of the treatment liquid from the second solid-liquid separation apparatus to the solubilization treatment apparatus.
に至る処理液の供給経路に濃縮装置を設けたことを特徴
とする請求項２０または２１記載の有機性廃水の処理装
置。22. The organic wastewater treatment apparatus according to claim 20, wherein a concentration apparatus is provided in a supply path of the treatment liquid from the first solid-liquid separation apparatus to the solubilization treatment apparatus.
処理する装置であって、第一固液分離装置に後続する処
理液経路に生物処理装置を配し、第一固液分離装置から
可溶化処理装置と後処理装置を経て生物処理装置に至る
処理液経路を設けたことを特徴とする有機性廃水の処理
装置。23. An apparatus for treating organic wastewater containing organic solids, wherein a biological treatment apparatus is disposed in a treatment liquid path subsequent to the first solid-liquid separation apparatus, and wherein the biological treatment apparatus is disposed from the first solid-liquid separation apparatus. An organic wastewater treatment apparatus, wherein a treatment liquid path is provided from a solubilization treatment apparatus and a post-treatment apparatus to a biological treatment apparatus.
第二固液分離装置を設けたことを特徴とする請求項２３
記載の有機性廃水の処理装置。24. The apparatus according to claim 23, wherein a second solid-liquid separation device is provided in a treatment liquid path following the biological treatment device.
An organic wastewater treatment apparatus as described in the above.
至る処理液の返送経路を設けたことを特徴とする請求項
２４記載の有機性廃水の処理装置。25. The organic wastewater treatment apparatus according to claim 24, wherein a return path for a treatment liquid from the second solid-liquid separation device to the biological treatment device is provided.
に至る処理液の返送経路を設けたことを特徴とする請求
項２４または２５記載の有機性廃水の処理装置。26. The organic wastewater treatment apparatus according to claim 24, wherein a return path of the treatment liquid from the second solid-liquid separation device to the solubilization treatment device is provided.
に至る処理液の返送経路に濃縮装置を設けたことを特徴
とする請求項２６記載の有機性廃水の処理装置。27. The organic wastewater treatment apparatus according to claim 26, wherein a concentration apparatus is provided in a return path of the treatment liquid from the second solid-liquid separation device to the solubilization treatment device.
処理する装置であって、第一固液分離装置に後続する処
理液経路に生物処理装置を配し、第一固液分離装置に後
続する別の処理液経路に可溶化処理装置と後処理装置を
この順で配したことを特徴とする有機性廃水の処理装
置。28. An apparatus for treating organic wastewater containing organic solid matter, wherein a biological treatment apparatus is disposed in a treatment liquid path subsequent to the first solid-liquid separation apparatus, and the first solid-liquid separation apparatus is provided with a biological treatment apparatus. An organic wastewater treatment device, wherein a solubilization treatment device and a post-treatment device are arranged in this order in another subsequent treatment liquid path.
処理する装置であって、第一固液分離装置に後続する処
理液経路に生物処理装置を配し、第一固液分離装置に後
続する別の処理液経路に可溶化処理装置と後処理装置と
第二固液分離装置をこの順で配し、第二固液分離装置か
ら可溶化処理装置に至る処理液の返送経路を設けたこと
を特徴とする有機性廃水の処理装置。29. An apparatus for treating organic wastewater containing organic solid matter, wherein a biological treatment apparatus is disposed in a treatment liquid path subsequent to the first solid-liquid separation apparatus, and the first solid-liquid separation apparatus is provided with a biological treatment apparatus. A solubilization treatment device, a post-treatment device, and a second solid-liquid separation device are arranged in this order in another subsequent treatment liquid route, and a return route for the treatment liquid from the second solid-liquid separation device to the solubilization treatment device is provided. An organic wastewater treatment apparatus, characterized in that:
至る処理水の供給経路を設けたことを特徴とする請求項
３０記載の有機性廃水の処理装置。30. The organic wastewater treatment apparatus according to claim 30, wherein a supply path of treated water from the second solid-liquid separation apparatus to the biological treatment apparatus is provided.
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|---|---|---|---|
| JP2000179944A JP3900796B2 (en) | 2000-06-15 | 2000-06-15 | Method and apparatus for treating organic wastewater |
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|---|---|---|---|
| JP2000179944A JP3900796B2 (en) | 2000-06-15 | 2000-06-15 | Method and apparatus for treating organic wastewater |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007283249A (en) * | 2006-04-19 | 2007-11-01 | Takasago Thermal Eng Co Ltd | Organic wastewater treatment system |
| JP2007319837A (en) * | 2006-06-05 | 2007-12-13 | Sumiju Kankyo Engineering Kk | Waste water treatment apparatus and method |
| JP2008012409A (en) * | 2006-07-04 | 2008-01-24 | Sumiju Kankyo Engineering Kk | Waste water treatment apparatus and waste water treatment method |
| JP2008018357A (en) * | 2006-07-13 | 2008-01-31 | Sumiju Kankyo Engineering Kk | Waste water treatment apparatus and waste water treatment method |
| JP2008178841A (en) * | 2007-01-26 | 2008-08-07 | Tokiwa Reitou Shokuhin Kk | Method for treating yu (tofu whey) and liquid fertilizer and deodorization liquid produced by this method |
| JP2016052619A (en) * | 2014-09-03 | 2016-04-14 | 水ｉｎｇ株式会社 | Method and apparatus for treating organic wastewater containing fat and oil |
| JP2016221491A (en) * | 2015-06-03 | 2016-12-28 | オルガノ株式会社 | Organic wastewater treatment method and organic wastewater treatment equipment |
-
2000
- 2000-06-15 JP JP2000179944A patent/JP3900796B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007283249A (en) * | 2006-04-19 | 2007-11-01 | Takasago Thermal Eng Co Ltd | Organic wastewater treatment system |
| JP2007319837A (en) * | 2006-06-05 | 2007-12-13 | Sumiju Kankyo Engineering Kk | Waste water treatment apparatus and method |
| JP4579866B2 (en) * | 2006-06-05 | 2010-11-10 | 住重環境エンジニアリング株式会社 | Waste water treatment apparatus and waste water treatment method |
| JP2008012409A (en) * | 2006-07-04 | 2008-01-24 | Sumiju Kankyo Engineering Kk | Waste water treatment apparatus and waste water treatment method |
| JP2008018357A (en) * | 2006-07-13 | 2008-01-31 | Sumiju Kankyo Engineering Kk | Waste water treatment apparatus and waste water treatment method |
| JP4579878B2 (en) * | 2006-07-13 | 2010-11-10 | 住重環境エンジニアリング株式会社 | Waste water treatment apparatus and waste water treatment method |
| JP2008178841A (en) * | 2007-01-26 | 2008-08-07 | Tokiwa Reitou Shokuhin Kk | Method for treating yu (tofu whey) and liquid fertilizer and deodorization liquid produced by this method |
| JP2016052619A (en) * | 2014-09-03 | 2016-04-14 | 水ｉｎｇ株式会社 | Method and apparatus for treating organic wastewater containing fat and oil |
| JP2016221491A (en) * | 2015-06-03 | 2016-12-28 | オルガノ株式会社 | Organic wastewater treatment method and organic wastewater treatment equipment |
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