JPH0630790B2 - Sludge treatment method - Google Patents
Sludge treatment methodInfo
- Publication number
- JPH0630790B2 JPH0630790B2 JP819384A JP819384A JPH0630790B2 JP H0630790 B2 JPH0630790 B2 JP H0630790B2 JP 819384 A JP819384 A JP 819384A JP 819384 A JP819384 A JP 819384A JP H0630790 B2 JPH0630790 B2 JP H0630790B2
- Authority
- JP
- Japan
- Prior art keywords
- organic
- organic wastewater
- acid
- sludge
- treatment
- 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 - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【発明の詳細な説明】 本発明は、水処理等によつて生成する汚泥を熱処理し
て、汚泥中の有機物の可溶化を図り、熱処理後の汚泥を
固液分離処理し、固形物と有機廃水を各別に処理する方
法に関する。DETAILED DESCRIPTION OF THE INVENTION According to the present invention, sludge produced by water treatment or the like is heat-treated to solubilize organic substances in the sludge, and the sludge after the heat treatment is subjected to solid-liquid separation treatment. It relates to a method for treating wastewater separately.
従来、上述の固液分離により得られた有機廃水を水処理
設備で処理していたが、有機廃水の処理負荷が極めて高
いために、例えば下水処理の場合には水処理設備の処理
負荷が有機廃水のために２０％程度増大する等のよう
に、水処理面での欠点があつた。Conventionally, the organic wastewater obtained by the above-mentioned solid-liquid separation was treated in the water treatment facility, but since the treatment load of the organic wastewater is extremely high, for example, in the case of sewage treatment, the treatment load of the water treatment facility is organic. There were drawbacks in terms of water treatment, such as an increase of about 20% due to waste water.
本発明の目的は、汚泥処理により生じる有機廃水から有
価物を回収して、有機廃水の処理負荷を十分に低減する
と共に、有価物回収に要する時間や敷地を少く済ませる
ようにする点にある。An object of the present invention is to recover valuable substances from organic wastewater generated by sludge treatment, to sufficiently reduce the processing load of organic wastewater, and to reduce the time and site required for recovering valuable substances.
本発明による汚泥処理方法の特徴手段は、熱処理後の汚
泥の固液分離により得た有機廃水を、バイオリアクター
で酸発酵させ、酸発酵させた有機廃水から直接膜分離に
よつて、あるいは、抽出工程を経た後での膜分離によつ
て有機酸を回収することにあり、その作用効果は次の通
りである。The characteristic means of the sludge treatment method according to the present invention is that organic wastewater obtained by solid-liquid separation of sludge after heat treatment is acid-fermented in a bioreactor, and is directly extracted from the acid-fermented organic wastewater by membrane separation, or extracted. The organic acid is recovered by the membrane separation after the steps, and its action and effect are as follows.
つまり有機廃水から有価物としての有機酸、例えば酢酸
やプロピオン酸等を回収することによつて、その後の有
機廃水の処理負荷を十分に低減して、水処理面で有利に
なると共に、省資源面でも有利になつた。In other words, by recovering valuable organic acids such as acetic acid and propionic acid from the organic wastewater, the subsequent treatment load of the organic wastewater is sufficiently reduced, which is advantageous in terms of water treatment and resource saving. Also in terms of advantages.
他方、例えば有機廃水からメタン発酵により有価物とし
てのメタンガスを回収することも考えられるが、メタン
発酵に長時間を要するため、有価物回収に多大な時間と
敷地を必要とする問題を派生する。しかし、本発明のよ
うに有機酸を膜分離によつて回収すれば、４〜５時間程
度の短時間で有価物回収を行えて、必要な敷地が少くて
済み、地価高騰の都市部等の敷地確保面で問題を生じや
すい地域においても、実用的に汚泥処理を行えるように
なつた。On the other hand, for example, it is possible to recover methane gas as a valuable resource from organic wastewater by methane fermentation, but since methane fermentation requires a long time, a problem that a great amount of time and a site are required for recovering the valuable resource is derived. However, if the organic acid is recovered by membrane separation as in the present invention, valuable materials can be recovered in a short time of about 4 to 5 hours, the required site is small, and the land price is soaring. It has become possible to practically perform sludge treatment even in areas where it is easy to have problems in securing the site.
次に、第１図により実施例を示す。Next, FIG. 1 shows an embodiment.
下水、し尿、産業廃水等の処理に伴つて生じる汚泥を、
濃縮装置(1)で処理した後で熱処理装置(2)に供給し、反
応温度１００〜２００℃、反応時間３０〜６０分で有酸
素下で反応させて、有機物の可溶化、主として菌体の細
胞壁破壊を行わせ、固形物の量を減少させる。Sludge generated by the treatment of sewage, night soil, industrial wastewater, etc.
After being treated by the concentrating device (1), it is supplied to the heat treatment device (2) and reacted under aerobic conditions at a reaction temperature of 100 to 200 ° C. for a reaction time of 30 to 60 minutes to solubilize organic matters, mainly to remove microbial cells. It causes cell wall destruction and reduces the amount of solids.
熱処理後の汚泥を固液分離装置(3)に供給して、固形物
と有機廃水を得る。The sludge after the heat treatment is supplied to the solid-liquid separator (3) to obtain solid matter and organic wastewater.
固形物を、脱水装置(4)で処理した後、乾燥装置(5)等で
処理する。The solid matter is treated with the dehydrator (4) and then with the dryer (5) or the like.
有機廃水を、セラミツク担体に菌体を固定させたバイオ
リアクター(6)に供給し、バイオリアクター(6)で酸発酵
させ、有機廃水から、酢酸、プロピオン酸、酪酸等の有
機酸を生成させる。The organic wastewater is supplied to a bioreactor (6) in which cells are immobilized on a ceramic carrier, and acid fermentation is carried out in the bioreactor (6) to produce organic acids such as acetic acid, propionic acid and butyric acid from the organic wastewater.
酸発酵させた有機廃水を抽出装置(7)に供給し、pHを４
以下、望ましくは３以下に調整して、トリ−ｎ−ブチル
フオスフエート、ＴＯＰＯ／ケロシン、ｎ−アミルアル
コール、ｎ−ヘキシルアルコール、２−エチル−１−ブ
タノール等の抽出剤中に、有機廃水中の有機酸を抽出し
て、有機酸濃度を高める。The acid-fermented organic wastewater is supplied to the extraction device (7) to adjust the pH to 4
Below, preferably adjusted to 3 or less, in an extractant such as tri-n-butylphosphate, TOPO / kerosene, n-amyl alcohol, n-hexyl alcohol, 2-ethyl-1-butanol, organic wastewater Extract the organic acid in it to increase the organic acid concentration.
抽出処理後の抽出剤及び有機廃水を液分離装置(8)に供
給し、抽出剤のみを膜分離装置(9)に供給し、逆浸透膜
やイオン交換膜等の分離膜(9a)による有機酸選択浸透作
用で有機酸を回収し、その有機酸を回収路(10)に送ると
共に、膜分離後の抽出剤を還流路(11)で抽出装置(7)に
戻す。The extractant and organic wastewater after the extraction treatment are supplied to the liquid separation device (8), only the extractant is supplied to the membrane separation device (9), and the organic matter is separated by the separation membrane (9a) such as reverse osmosis membrane or ion exchange membrane. The organic acid is recovered by the acid selective permeation action, the organic acid is sent to the recovery path (10), and the extractant after membrane separation is returned to the extraction device (7) through the reflux path (11).
脱水装置(4)及び液分離装置(8)からの有機廃水を水処理
設備(12)に送る。The organic wastewater from the dehydrator (4) and the liquid separator (8) is sent to the water treatment facility (12).
次に、実験結果を示す。Next, experimental results are shown.
バイオリアクター(6)における有機廃水の滞留時間と、
有機廃水中の有機酸濃度の相関を調べたところ、第２図
に示す結果を得た。また、バイオリアクター(6)におけ
る有機廃水の滞留時間と有機酸生成能力の相関を調べた
ところ、第３図に示す結果を得た。Residence time of organic wastewater in the bioreactor (6),
When the correlation of the organic acid concentration in the organic waste water was investigated, the results shown in FIG. 2 were obtained. Further, when the correlation between the residence time of the organic wastewater in the bioreactor (6) and the ability to produce organic acid was examined, the results shown in FIG. 3 were obtained.
第２図及び第３図から、滞留時間が３〜１５時間の時に
有機酸濃度が高くなり、滞留時間が３０分〜７時間の時
に十分な有機酸生成能力が得られることが判明し、その
結果、バイオリアクター(6)における有機廃水の滞留時
間は３〜７時間が望ましいことが判つた。From FIGS. 2 and 3, it was found that the organic acid concentration was high when the residence time was 3 to 15 hours, and a sufficient organic acid generation ability was obtained when the residence time was 30 minutes to 7 hours. As a result, it was found that the residence time of the organic wastewater in the bioreactor (6) is preferably 3 to 7 hours.
そして、抽出剤としてｎ−ヘキシルアルコールを用い、
有機廃水のpHと抽出状態の相関を調べたところ下記表の
結果が得られた。And, using n-hexyl alcohol as an extractant,
When the correlation between the pH of the organic wastewater and the extraction state was investigated, the results shown in the table below were obtained.
上記表から有機廃水の初期pHを４以下、望ましくは３以
下にすれば良いことが判つた。 From the above table, it was found that the initial pH of the organic waste water should be 4 or less, preferably 3 or less.
次に、別の実施例を説明する。Next, another embodiment will be described.
抽出工程を省略し、バイオリアクター(6)で酸発酵させ
た有機廃水を直接膜分離装置(9)に供給しても良い。The extraction step may be omitted, and the organic wastewater acid-fermented in the bioreactor (6) may be directly supplied to the membrane separation device (9).
汚泥の熱処理に際して、酸、アルカリ、酵素等の添加物
を汚泥に加えてもよい。When heat treating the sludge, additives such as acids, alkalis and enzymes may be added to the sludge.
第１図は本発明の実施例を示すフローシート、第２図及
び第３図は実験結果を示すグラフである。FIG. 1 is a flow sheet showing an example of the present invention, and FIGS. 2 and 3 are graphs showing experimental results.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０７Ｃ 51/00 Ｘ 9356−4Ｈ (72)発明者 鳥山 明夫 大阪府大阪市浪速区敷津東１丁目２番47号 久保田鉄工株式会社内 (72)発明者 栢分 英助 大阪府大阪市浪速区敷津東１丁目２番47号 久保田鉄工株式会社内 (56)参考文献 （ｉ）社団法人化学工学協会編「水質汚 濁防止技術と装置６ スラッジの処理技術 と装置 スラッジの処理技術と装置」（昭 53−10−20）Ｐ．83〜88 （ｉｉ）用水廃水ハンドブック編集委員 会編「用水廃水ハンドブック」第１版 産 業用水調査会（昭和44−11−25）Ｐ．635 （ｉｉｉ）社団法人化学工学協会編「水 質汚濁防止技術と装置５、排水の高度処理 と再利用」（昭和54−10−25）培風館 Ｐ．63−65─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Reference number within the agency FI Technical display location C07C 51/00 X 9356-4H (72) Inventor Akio Toriyama 1 Shikizu East, Naniwa-ku, Osaka City, Osaka Prefecture 2-247, Kubota Iron Works Co., Ltd. (72) Inventor, Eisuke Kasubu 1-2-47, Shiketsu East, Naniwa-ku, Osaka City, Osaka Prefecture (56) References (i) Chemical Engineering Corporation “Water pollution control technology and equipment 6 Sludge treatment technology and equipment Sludge treatment technology and equipment” edited by the association (Sho 53-10-20) P. 83-88 (ii) Water and Wastewater Handbook Editorial Committee, “Water and Wastewater Handbook,” 1st edition Industrial Water Research Committee (Showa 44-11-25) P. 635 (iii) Japan Chemical Engineering Association, “Water pollution prevention technology and equipment 5, advanced treatment and reuse of wastewater” (Showa 54-10-25), Baifukan P. 63-65
Claims (2)
理方法であつて、固液分離により得た有機廃水をバイオ
リアクターで酸発酵させ、酸発酵させた有機廃水から膜
分離によつて有機酸を回収する汚泥処理方法。1. A sludge treatment method for solid-liquid separation of sludge after heat treatment, which comprises subjecting an organic wastewater obtained by solid-liquid separation to acid fermentation in a bioreactor, and subjecting the organic wastewater subjected to acid fermentation to membrane separation. Sludge treatment method for recovering organic acid.
滞留時間を３〜７時間にする特許請求の範囲第項に記
載の方法。2. The method according to claim 1, wherein the residence time of the organic wastewater in the bioreactor is set to 3 to 7 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP819384A JPH0630790B2 (en) | 1984-01-18 | 1984-01-18 | Sludge treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP819384A JPH0630790B2 (en) | 1984-01-18 | 1984-01-18 | Sludge treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60150896A JPS60150896A (en) | 1985-08-08 |
| JPH0630790B2 true JPH0630790B2 (en) | 1994-04-27 |
Family
ID=11686441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP819384A Expired - Lifetime JPH0630790B2 (en) | 1984-01-18 | 1984-01-18 | Sludge treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0630790B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60222196A (en) * | 1984-04-20 | 1985-11-06 | Sanki Eng Co Ltd | Treatment of organic waste water |
| KR100471963B1 (en) * | 2001-08-29 | 2005-02-21 | 이원바이오텍주식회사 | Method for Manufacturing Anaerobic Fermentation Broth from Organic Wastes for Using in Nutrient Removal |
| KR100475840B1 (en) * | 2002-05-08 | 2005-03-15 | 주식회사 태진엔지니어링 | Compact, flexible and economical nitrogen removal process for municipal and industrial waste water |
| KR100474375B1 (en) * | 2002-05-09 | 2005-03-08 | 한국건설기술연구원 | Organic Acid Producing Facility for Advanced Biological Nutrient Removal, and Facility and Method of Hybrid of Sludge & Nutrient Removal (HSNR) by the OAPF |
| KR100507990B1 (en) * | 2003-07-08 | 2005-08-17 | 한국건설기술연구원 | Facilities and method for the production of organic acids from sewage sludge by thermal oxidation |
| JP4688713B2 (en) * | 2006-03-29 | 2011-05-25 | 住友重機械エンバイロメント株式会社 | Organic acid generation method, organic acid generation apparatus, and wastewater treatment facility |
| CN102518599B (en) * | 2011-12-08 | 2016-01-20 | 陈斌 | The vehicle-mounted pumping and spraying unit of a kind of motor-driven pulping natural pond liquid |
-
1984
- 1984-01-18 JP JP819384A patent/JPH0630790B2/en not_active Expired - Lifetime
Non-Patent Citations (3)
| Title |
|---|
| （ｉ）社団法人化学工学協会編「水質汚濁防止技術と装置６スラッジの処理技術と装置スラッジの処理技術と装置」（昭５３−１０−２０）Ｐ．８３〜８８ |
| （ｉｉ）用水廃水ハンドブック編集委員会編「用水廃水ハンドブック」第１版産業用水調査会（昭和４４−１１−２５）Ｐ．６３５ |
| （ｉｉｉ）社団法人化学工学協会編「水質汚濁防止技術と装置５、排水の高度処理と再利用」（昭和５４−１０−２５）培風館Ｐ．６３−６５ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60150896A (en) | 1985-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lettinga et al. | Anaerobic treatment of raw domestic sewage at ambient temperatures using a granular bed UASB reactor | |
| US4134830A (en) | Method of purifying waste water | |
| JPH09201599A (en) | Method for recovering useful substance from organic waste and utilizing the same as resources | |
| EP0218066B1 (en) | Wastewater purification process | |
| JPH0630790B2 (en) | Sludge treatment method | |
| CN115583764A (en) | Method for treating coal gasification wastewater | |
| KR101909736B1 (en) | Method for producing organic carbon source using waste food leachate, and its producing organic carbon source | |
| JP3447028B2 (en) | How to reduce organic sludge | |
| JP4457391B2 (en) | Organic sludge treatment method and treatment apparatus | |
| JP3958504B2 (en) | Sludge volume reduction treatment system and treatment apparatus | |
| JPH08238499A (en) | Treating method for excess sludge | |
| JPH0889991A (en) | Treatment of waste water | |
| JPH10249384A (en) | Treatment of concentrated suspended matter-containing waste water | |
| JP3832808B2 (en) | Method for recovering phosphorus in sludge | |
| JP2001170614A (en) | Organic waste water treating method and treating system | |
| JP4566718B2 (en) | Sewage treatment apparatus and method | |
| JP2002224645A (en) | Method of high concentration methane fermentation | |
| JP2005324173A (en) | Method and apparatus for treating sludge | |
| JPS5586586A (en) | Treating method of sewage | |
| JP3447037B2 (en) | Aerobic digestion of activated sludge | |
| JP3440643B2 (en) | Wastewater treatment method | |
| JPS58205594A (en) | Anaerobic digestion method | |
| Al-Omari | Arrested Anaerobic Digestion and Recovery of Value-added Products Through Vacuum-intensified Alkaline Fermentation | |
| JPS59397A (en) | Treatment of effluent from heat-treated sludge | |
| JPH08192183A (en) | Waste water treating device |