JPS6020078B2 - Organic sludge treatment method - Google Patents
Organic sludge treatment methodInfo
- Publication number
- JPS6020078B2 JPS6020078B2 JP53015867A JP1586778A JPS6020078B2 JP S6020078 B2 JPS6020078 B2 JP S6020078B2 JP 53015867 A JP53015867 A JP 53015867A JP 1586778 A JP1586778 A JP 1586778A JP S6020078 B2 JPS6020078 B2 JP S6020078B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- organic sludge
- irradiated
- organic
- treatment method
- 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
Links
- 239000010802 sludge Substances 0.000 title claims description 35
- 238000000034 method Methods 0.000 title claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 230000005865 ionizing radiation Effects 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 238000010894 electron beam technology Methods 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 230000002285 radioactive effect Effects 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000007787 solid Substances 0.000 description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 5
- 229910001882 dioxygen Inorganic materials 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000008394 flocculating agent Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 241000205407 Polygonum Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000852 hydrogen donor Substances 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Description
【発明の詳細な説明】
本発明は、有機性汚泥を可溶化処理する方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for solubilizing organic sludge.
従来、有機性汚泥の生物学的処理などにおいて発生する
有機性汚泥を処理するには、有機性汚泥に有機高分子凝
集剤や無機凝集剤（塩化鉄、石灰等）を加えて脱水した
り、あるいは汚泥を２００ｑｏ付近で３０〜６０分間熱
処理したのち脱水する方法が一般的であった。Conventionally, in order to treat organic sludge generated in biological treatment of organic sludge, organic polymer flocculants and inorganic flocculants (iron chloride, lime, etc.) are added to the organic sludge for dehydration, Alternatively, a common method was to heat-treat the sludge at around 200 qo for 30 to 60 minutes and then dehydrate it.
しかしながら、有機高分子凝集剤や無機凝集剤を加える
方法では、脱水ケーキの水分の大幅な低下を期待できず
、また大量の脱水ケーキが生成されるため、脱水ケーキ
の処分もまた容易ではなかった。一方、熱処理方法にお
いても、熱交換器へのスケールの付着や臭気の処理など
技術的に問題が多かった。本発明は、上記従釆法の欠点
を解消し、有機性汚泥を可溶化して有効に再利用できる
ような状態にすることを目的とするものである。However, with the method of adding organic polymer flocculants or inorganic flocculants, it is not possible to expect a significant reduction in the moisture content of the dehydrated cake, and since a large amount of dehydrated cake is produced, it is also not easy to dispose of the dehydrated cake. . On the other hand, the heat treatment method also had many technical problems, such as scale adhesion to the heat exchanger and treatment of odors. The object of the present invention is to eliminate the drawbacks of the above-mentioned conventional method and to solubilize organic sludge so that it can be effectively reused.
本発明は、有機性汚泥にアルカリを加えて汚泥のｐＨを
アルカリ性に調整したのち、酸素の共存下で電離性放射
線を照射し、有機性汚泥に含まれているバクテリア、原
生動物、多榛類などの不溶性の有機物を可溶性の有機物
に変換することを特徴とするものである。In the present invention, after adjusting the pH of the sludge to alkaline by adding alkali to the organic sludge, ionizing radiation is irradiated in the coexistence of oxygen to remove bacteria, protozoa, and polygonum contained in the organic sludge. It is characterized by converting insoluble organic substances such as into soluble organic substances.
本発明において使用するアルカリは如何なるものでもよ
いが、通常は水酸化カルシウム、水酸化ナトリウムなど
の無機のアルカリを使用し、汚泥のｐＨを好ましくは９
〜１４に調整する。Although any alkali can be used in the present invention, inorganic alkalis such as calcium hydroxide and sodium hydroxide are usually used, and the pH of the sludge is preferably adjusted to 9.
Adjust to ~14.
また、酸素としては空気、酸素ガスのいずれを使用する
もよく、常圧あるいは加圧下で吸収させる。さらに電機
性放射線としては、アルファ線、車陽子線、陽子線、ベ
ータ‐線、電子線、ガンマ一線のいずれでもよいが、効
果、照射効率を考慮すると、通常の放射性同位元素から
のガンマ−線または電子加速器からの電子線を照射する
とよい。さらに本発明について述べれば、第１図は下水
を生物学的処理したときに発生した有機性汚泥に種々の
条件で電離性放射を照射し、照射後の汚泥をＭ．松のる
紙でろ過したときの固形物の回収率を示したものである
。Further, as the oxygen, either air or oxygen gas may be used, and the oxygen is absorbed under normal pressure or pressurization. Furthermore, as electromagnetic radiation, alpha rays, proton rays, proton rays, beta rays, electron beams, and gamma rays may be used, but considering the effectiveness and irradiation efficiency, gamma rays from ordinary radioactive isotopes Alternatively, it is preferable to irradiate with an electron beam from an electron accelerator. Further describing the present invention, FIG. 1 shows that organic sludge generated during biological treatment of sewage is irradiated with ionizing radiation under various conditions, and the sludge after irradiation is treated with M.I. This shows the recovery rate of solids when filtered through pine paper.
この第１図からも明らかなように、汚泥に直接電離性放
射線を照射しただけではほとんど可溶化せず固形物回収
率が高く、また汚泥に酸素共存下で、あるいは酸素を供
Ｖ総せずにアルカリ性にして照射すると、汚泥は可溶化
して固形物回収率は低下するが、乳Ｍ的ｄの照射でも約
５０％可溶化する程度である。ところが、本発明の如く
汚泥をアルカリ性にしかつ酸素共存下で照射すると、汚
泥は効果的に可溶化して固形物回収率は飛躍的に低下す
る。・また、上記汚泥に電離性放射線をＩＭｒａｄ、そ
れぞれ上記のように直接照射、酸素共存下で照射、アル
カリ性にして照射、および本発明によりアルカリ性にし
かつ酸素共存下で照射したときの各分離液の８００は、
それぞれ２１３ｐｐｍ、３，６３桝ｐｍ、４，５１本ｐ
ｍ、７，斑かｐｍである。このように、本発明は有機汚
泥をアルカリ性にして酸素共存下で電離性放射線を照射
することによって、有機性汚泥を効果的に溶解性の有機
物に交換することができ、その可溶化した液を、通常に
生物学的処理過程へ返送して容易に処理することができ
、あるいはこの可溶化した液を有機性汚水の脱窒素処理
における水素供与体として、メタノールなどの炭素化合
物の代りに有効に再利用することができ、さらに残留し
た固形物の脱水性も向上するものである。As is clear from Figure 1, direct irradiation of ionizing radiation to sludge results in almost no solubilization and a high solids recovery rate; When the sludge is made alkaline and irradiated, the sludge becomes solubilized and the solids recovery rate decreases, but even with irradiation of milk M, about 50% is solubilized. However, when the sludge is made alkaline and irradiated in the presence of oxygen as in the present invention, the sludge is effectively solubilized and the solids recovery rate is dramatically reduced.・In addition, the sludge was irradiated with ionizing radiation by IMrad, as described above, directly irradiated, irradiated in the presence of oxygen, made alkaline and irradiated, and made alkaline and irradiated in the presence of oxygen according to the present invention. 800 is
213ppm, 3,63masupm, 4,51ppm respectively
m, 7, spots or pm. As described above, the present invention makes it possible to effectively exchange organic sludge with soluble organic matter by making the organic sludge alkaline and irradiating it with ionizing radiation in the coexistence of oxygen. , which can be easily returned to a biological treatment process for normal treatment, or the solubilized liquid can be used as a hydrogen donor in the denitrification treatment of organic wastewater, effectively replacing carbon compounds such as methanol. It can be reused, and the dehydration properties of the remaining solids are also improved.
次に実施例を示す。Next, examples will be shown.
実施例 １
都市下水の生物学的処理において発生した混合生汚泥に
消石灰を加えてｐＨ１３．５に調整し、酸素ガスを吹き
込んでコバルト６０力）らのガンマ‐線を１．９Ｍｒａ
ｄ照射し、照射後可溶化した液をＮｏ．弘のろ紙でろ過
し、ろ液のＢＯＤを測定した結果１２，３６かｐｍであ
った。Example 1 Slaked lime was added to mixed raw sludge generated in the biological treatment of urban sewage to adjust the pH to 13.5, and oxygen gas was blown into the mixed raw sludge to reduce the cobalt gamma rays to 1.9 Mra.
d irradiation, and the solubilized solution after irradiation was transferred to No. The BOD of the filtrate was measured and found to be 12.36 pm.
また比較のため、同汚泥に直接ガンマ‐線を１．９Ｍ偽
ｄ照射した場合、斑調整を行なわずに酸素ガスを吹き込
んでガンマ‐線を１．８Ｍｍｄ照射した場合、消石灰を
加えて、ｐＨ１３．５に調整したのみでガンマ‐線を１
．則心ａｄ照射した場合のそれぞれについて上記と同機
にろ過し、各ろ過のＢＯＯを測定した結果、それぞれ３
６４ｐｐｍ、４，２３６ｐｐｍ、６，８１３ｐｐｍであ
った。For comparison, when the same sludge was directly irradiated with 1.9M pseudo-d gamma rays, when it was irradiated with 1.8Mmd gamma rays by blowing oxygen gas without spot adjustment, and when sludge was added with slaked lime, the pH was 13 Just adjusting it to .5 reduces the gamma ray to 1.
．． As a result of filtration using the same machine as above for each case of regular ad irradiation and measuring the BOO of each filtration, 3
They were 64 ppm, 4,236 ppm, and 6,813 ppm.
実施例 ２
食品工場からの廃水の生物学的処理において発生した余
剰活性汚泥に水酸化ナトリウムを加えてｐＨ１３．８に
調整し、酸素ガスを吹き込んで電子加速器からの電子線
を２．０Ｍ的ｄ照射し、照射後可溶化した液を遠心分離
し、その分離液の８０Ｄを測定した結果９，５６沙ｐｍ
であった。Example 2 Excess activated sludge generated during biological treatment of wastewater from a food factory was adjusted to pH 13.8 by adding sodium hydroxide, and oxygen gas was blown into the surplus activated sludge, and the electron beam from the electron accelerator was heated to 2.0M d. After irradiation, the solubilized liquid was centrifuged, and the 80D of the separated liquid was measured, and the result was 9.56 sapm.
Met.
また比較のため、同汚泥に直接電子線を
２．０Ｍ的ｄ照射した場合、ｐＨ調整を行なわずに酸素
ガスを吹き込んで電子線を２．０Ｍｒａｄ照射した場合
、水酸化ナトリウムを加えてｐＨ１３．８に調整したの
みで電子線を２．瓜Ｍｒａｄ照射した場合のそれぞれに
ついて上記と同様に遠心分離し、各分離液のＢＯＤを測
定した結果、それぞれ２１３ｐｐｍ、３，８６かｐｍ、
５，２１３ｐｐｍであった。For comparison, when the same sludge was directly irradiated with an electron beam at 2.0 Mrad, when the same sludge was irradiated with an electron beam at 2.0 Mrad while oxygen gas was blown into it without pH adjustment, and when sodium hydroxide was added to the sludge, the pH reached 13. The electron beam was adjusted to 2. When the melon was irradiated with Mrad, it was centrifuged in the same manner as above, and the BOD of each separated liquid was measured.
It was 5,213 ppm.
第１図は電離性放射線の照射線量と汚泥の固形物回収率
との関係を示す線図である。
第 １ 図FIG. 1 is a diagram showing the relationship between the irradiation dose of ionizing radiation and the solid matter recovery rate of sludge. Figure 1
Claims (1)
離性放射線を照射することを特徴とする有機性汚泥の処
理方法。 ２ 前記アルカリ性に調整するに際し、ｐＨ９〜１４に
調整する請求範囲第１項記載の有機性汚泥の処理方法。 ３ 前記電離性放射線として放射性同位元素からのガン
マー線または電子加速器からの電子線を使用する請求範
囲第１項または第２項記載の有機性汚泥の処理方法。[Claims] 1. A method for treating organic sludge, which comprises adjusting the organic sludge to be alkaline and irradiating it with ionizing radiation in the presence of oxygen. 2. The method for treating organic sludge according to claim 1, wherein the pH is adjusted to 9 to 14 when adjusting the alkalinity. 3. The organic sludge treatment method according to claim 1 or 2, wherein gamma rays from a radioactive isotope or electron beams from an electron accelerator are used as the ionizing radiation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53015867A JPS6020078B2 (en) | 1978-02-16 | 1978-02-16 | Organic sludge treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53015867A JPS6020078B2 (en) | 1978-02-16 | 1978-02-16 | Organic sludge treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54109244A JPS54109244A (en) | 1979-08-27 |
| JPS6020078B2 true JPS6020078B2 (en) | 1985-05-20 |
Family
ID=11900745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53015867A Expired JPS6020078B2 (en) | 1978-02-16 | 1978-02-16 | Organic sludge treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6020078B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0521722Y2 (en) * | 1986-07-30 | 1993-06-03 | ||
| JPH0741771U (en) * | 1994-05-02 | 1995-07-21 | 富士通株式会社 | Shutter lock mechanism for disk cartridge |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL168041A (en) * | 2005-04-14 | 2009-12-24 | Bar Edan Mfg And Dev Ltd | Method of treating raw sewage slurry |
| CN104556596B (en) * | 2013-10-25 | 2017-12-22 | 中国石油化工股份有限公司 | A kind of processing method of sludge |
-
1978
- 1978-02-16 JP JP53015867A patent/JPS6020078B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0521722Y2 (en) * | 1986-07-30 | 1993-06-03 | ||
| JPH0741771U (en) * | 1994-05-02 | 1995-07-21 | 富士通株式会社 | Shutter lock mechanism for disk cartridge |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54109244A (en) | 1979-08-27 |
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