JPH0160319B2 - - Google Patents
Info
- Publication number
- JPH0160319B2 JPH0160319B2 JP56070647A JP7064781A JPH0160319B2 JP H0160319 B2 JPH0160319 B2 JP H0160319B2 JP 56070647 A JP56070647 A JP 56070647A JP 7064781 A JP7064781 A JP 7064781A JP H0160319 B2 JPH0160319 B2 JP H0160319B2
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen sulfide
- generation
- microorganisms
- present
- sulfate
- 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
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
-
- 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
Landscapes
- Activated Sludge Processes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Description
本発明は微生物に基づく硫化水素の発生を防止
する方法に関する。
微生物、特に硫酸還元菌は嫌気的条件下で硫黄
化合物を還元して硫化水素を発生する。硫化水素
は毒性が強く、悪臭を放つばかりでなく金属を腐
食する作用がある。従来、硫酸還元菌による硫化
水素の発生を防止する方法としては殺菌剤や酸化
剤を添加したり、加熱殺菌したり、PH調整を行な
う方法などが知られている。しかし、殺菌剤は一
般に高価であり、安価な塩素は毒性および腐食作
用を有し好ましくない。また、空気の吹込みや
H2O2の添加も有効な手段であるが、硫酸還元菌
の増殖の程度によつては適用できないことがあ
る。さらに、加熱殺菌やPH調整は環境によつては
適用し難いことがある。
このような事情に鑑み、硝酸イオン（NO3 -）
を添加することにより硫化水素の発生を防止する
方法も提案されている。しかしながら、この方法
で十分な効果を達成するためには可成り高濃度に
使用することが必要である。
本発明の目的は上記のような従来法の問題点を
解消した、微生物に基づく硫化水素の発生を防止
する方法を提供することである。
本発明は、微生物の生息環境に亜硝酸イオンを
存在させることを特徴とする微生物に基づく硫化
水素の発生を防止する方法である。
微生物の生息環境としては、例えば活性汚泥や
活性炭による廃水処理装置、油タンクの底水、メ
タン発酵槽、汚濁河川、田畑、水溶性潤滑油等を
挙げることができる。
本発明は、このような微生物の生息環境に亜硝
酸イオンを存在せしめることによつて硫化水素の
発生を防止させるものである。ここで亜硝酸イオ
ン供給源としては既知の物質を任意に使用するこ
とができ、例えば亜硝酸ナトリウム、亜硝酸カリ
ウム、亜硝酸カルシウムなどがある。
硝酸イオンを存在させる従来法においては、後
記するように硫化水素の発生を十分に防止するた
めには約500ppm以上の高濃度で用いなければな
らないが、本発明によると亜硝酸イオンを50ppm
以上存在させればよく、実用性が極めて高い。微
生物の生息環境に亜硝酸イオンを存在させること
によつて硫酸還元菌のみ生育を抑えて硫化水素の
発生を防止することができる。
したがつて、本発明によれば廃水処理装置やメ
タン発酵槽、さらにタンク、配管等の腐食を防止
し、かつ悪臭の発生も防ぐことができる。
次に、本発明を実施例によつて説明する。
実施例
寒天1.5％を添加し、PHを7.4に調整したスター
キー培地（文献：アメリカン・タイプ・カルチヤ
ー・コレクシヨン ザ・カタログ・オブ・ストレ
インズ、第12版、第331頁、1976年）に活性炭
による廃水処理装置中の水0.5mlを加えて培養し、
硫酸還元菌を分離した。次いで、分離した硫酸還
元菌を寒天を加えていないスターキー培地で液体
培養した。この硫酸還元菌を含む培養液を希釈し
て680個／0.5mlに調整した。
この液を種菌として、亜硝酸ナトリウムを加え
たスターキーの寒天培地20mlに0.5ml接種し、30
℃で96時間培養し、硫酸還元菌の生育を調べた。
培地上のコロニー数を第１表に示す。なお、無添
加区のコロニー数は665個であつた。
The present invention relates to a method for preventing microbial-based hydrogen sulfide generation. Microorganisms, especially sulfate-reducing bacteria, reduce sulfur compounds and generate hydrogen sulfide under anaerobic conditions. Hydrogen sulfide is highly toxic and not only emits a foul odor but also corrodes metals. Conventionally, known methods for preventing the generation of hydrogen sulfide by sulfate-reducing bacteria include adding a bactericide or oxidizing agent, heat sterilization, and adjusting the pH. However, disinfectants are generally expensive, and inexpensive chlorine has toxic and corrosive effects and is therefore undesirable. In addition, air blowing and
Addition of H 2 O 2 is also an effective means, but it may not be applicable depending on the degree of growth of sulfate-reducing bacteria. Furthermore, heat sterilization and pH adjustment may be difficult to apply depending on the environment. In view of these circumstances, nitrate ion (NO 3 - )
A method has also been proposed for preventing the generation of hydrogen sulfide by adding . However, in order to achieve a sufficient effect with this method it is necessary to use fairly high concentrations. An object of the present invention is to provide a method for preventing the generation of hydrogen sulfide based on microorganisms, which eliminates the problems of the conventional methods as described above. The present invention is a method for preventing hydrogen sulfide generation caused by microorganisms, which is characterized by causing nitrite ions to exist in the habitat of microorganisms. Examples of the habitat for microorganisms include wastewater treatment equipment using activated sludge and activated carbon, bottom water of oil tanks, methane fermentation tanks, polluted rivers, fields, and water-soluble lubricating oil. The present invention prevents the generation of hydrogen sulfide by allowing nitrite ions to exist in the habitat of such microorganisms. Any known substance can be used as the nitrite ion source, such as sodium nitrite, potassium nitrite, calcium nitrite, and the like. In the conventional method in which nitrate ions are present, they must be used at a high concentration of about 500 ppm or more in order to sufficiently prevent the generation of hydrogen sulfide, as described later, but according to the present invention, nitrite ions must be used at a high concentration of about 50 ppm or more.
It is sufficient to have at least one of the above elements present, and the practicality is extremely high. By allowing nitrite ions to exist in the habitat of microorganisms, it is possible to suppress the growth of only sulfate-reducing bacteria and prevent the generation of hydrogen sulfide. Therefore, according to the present invention, it is possible to prevent corrosion of wastewater treatment equipment, methane fermentation tanks, tanks, piping, etc., and also prevent the generation of bad odors. Next, the present invention will be explained with reference to examples. Example Activated carbon was added to Starkey medium (Reference: American Type Culture Collection, The Catalog of Strains, 12th edition, p. 331, 1976) with the addition of 1.5% agar and the pH adjusted to 7.4. Add 0.5ml of water from the wastewater treatment equipment and culture.
A sulfate-reducing bacterium was isolated. Next, the isolated sulfate-reducing bacteria were liquid cultured in Starkey's medium to which no agar was added. This culture solution containing sulfate-reducing bacteria was diluted to 680 cells/0.5 ml. Using this solution as an inoculum, inoculate 0.5ml into 20ml of Starkey's agar medium supplemented with sodium nitrite.
The cells were cultured at ℃ for 96 hours, and the growth of sulfate-reducing bacteria was examined.
The number of colonies on the medium is shown in Table 1. The number of colonies in the additive-free plot was 665.
【表】
加区
NO３ −添 683 632 643 431 45 ０
加区
[Table] Ka Ward
NO 3 - Attachment 683 632 643 431 45 0
Ka Ward
Claims (1)
ることを特徴とする微生物に基づく硫化水素の発
生を防止する方法。 ２ 亜硝酸イオンを50ppm以上存在させる特許請
求の範囲第１項記載の方法。[Scope of Claims] 1. A method for preventing the generation of hydrogen sulfide based on microorganisms, characterized by causing nitrite ions to exist in the habitat of the microorganisms. 2. The method according to claim 1, in which nitrite ions are present at 50 ppm or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7064781A JPS57187099A (en) | 1981-05-13 | 1981-05-13 | Preventing method for generation of hydrogen sulfide occuring in microbes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7064781A JPS57187099A (en) | 1981-05-13 | 1981-05-13 | Preventing method for generation of hydrogen sulfide occuring in microbes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57187099A JPS57187099A (en) | 1982-11-17 |
| JPH0160319B2 true JPH0160319B2 (en) | 1989-12-21 |
Family
ID=13437646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7064781A Granted JPS57187099A (en) | 1981-05-13 | 1981-05-13 | Preventing method for generation of hydrogen sulfide occuring in microbes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57187099A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03291816A (en) * | 1990-04-10 | 1991-12-24 | Seiko Instr Inc | Switch of electronic apparatus |
| JPH0454121U (en) * | 1990-09-12 | 1992-05-08 | ||
| JPH0520225U (en) * | 1991-08-29 | 1993-03-12 | ミツミ電機株式会社 | Push button switch |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4911843A (en) * | 1988-12-09 | 1990-03-27 | Davis Water And Waste Industries, Inc. | Process for removal of dissolved hydrogen sulfide and reduction of sewage BOD in sewer or other waste systems |
| AU7276698A (en) * | 1997-05-12 | 1998-12-08 | Dcv, Inc. | Method for reducing the level of hydrogen sulfide in wastewater systems |
| JP2001300545A (en) * | 2000-04-18 | 2001-10-30 | Mitsubishi Gas Chem Co Inc | Deodorizing method |
| JP4834908B2 (en) * | 2000-12-08 | 2011-12-14 | 栗田工業株式会社 | Odor generation prevention method |
| US7326340B2 (en) | 2003-03-05 | 2008-02-05 | Siemens Water Technologies Holding Corp. | System for controlling sulfide generation |
| US7087172B2 (en) | 2003-03-05 | 2006-08-08 | Usfilter Corporation | Methods for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater |
| US7285217B2 (en) | 2003-12-02 | 2007-10-23 | Siemens Water Technologies Corp. | Removing odoriferous sulfides from wastewater |
| JP5261977B2 (en) * | 2007-05-11 | 2013-08-14 | 栗田工業株式会社 | Anaerobic treatment method and anaerobic treatment apparatus |
| JP5303862B2 (en) * | 2007-05-11 | 2013-10-02 | 栗田工業株式会社 | Anaerobic treatment method and anaerobic treatment apparatus |
| JP5282767B2 (en) * | 2010-06-15 | 2013-09-04 | 栗田工業株式会社 | Odor generation prevention method |
| US8430112B2 (en) | 2010-07-13 | 2013-04-30 | Siemens Industry, Inc. | Slurry feed system and method |
| US8968646B2 (en) | 2011-02-18 | 2015-03-03 | Evoqua Water Technologies Llc | Synergistic methods for odor control |
| JP5616872B2 (en) * | 2011-10-17 | 2014-10-29 | 日鉄住金環境株式会社 | Sludge slurry deodorizing method, dewatering cake deodorizing method, and deodorizing agent |
| JP6172838B2 (en) * | 2012-12-28 | 2017-08-02 | 無臭元工業株式会社 | Wastewater treatment method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5613094A (en) * | 1979-07-11 | 1981-02-07 | Ebara Infilco Co Ltd | High degree treating method of organic waste water |
-
1981
- 1981-05-13 JP JP7064781A patent/JPS57187099A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03291816A (en) * | 1990-04-10 | 1991-12-24 | Seiko Instr Inc | Switch of electronic apparatus |
| JPH0454121U (en) * | 1990-09-12 | 1992-05-08 | ||
| JPH0520225U (en) * | 1991-08-29 | 1993-03-12 | ミツミ電機株式会社 | Push button switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57187099A (en) | 1982-11-17 |
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