JPH04371296A - Biological treatment of organic waste water containing sodium chloride at high concentration - Google Patents
Biological treatment of organic waste water containing sodium chloride at high concentrationInfo
- Publication number
- JPH04371296A JPH04371296A JP14880391A JP14880391A JPH04371296A JP H04371296 A JPH04371296 A JP H04371296A JP 14880391 A JP14880391 A JP 14880391A JP 14880391 A JP14880391 A JP 14880391A JP H04371296 A JPH04371296 A JP H04371296A
- Authority
- JP
- Japan
- Prior art keywords
- sodium chloride
- wastewater
- waste water
- high concentration
- water containing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims abstract description 41
- 239000011780 sodium chloride Substances 0.000 title claims abstract description 20
- 239000010815 organic waste Substances 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 2
- 241000894006 Bacteria Species 0.000 claims abstract description 16
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 10
- 230000000243 photosynthetic effect Effects 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 6
- 230000000813 microbial effect Effects 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 abstract description 26
- 230000029553 photosynthesis Effects 0.000 abstract 1
- 238000010672 photosynthesis Methods 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 description 8
- 235000015097 nutrients Nutrition 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 244000005700 microbiome Species 0.000 description 5
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 241000238413 Octopus Species 0.000 description 3
- 238000005273 aeration Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 235000005985 organic acids Nutrition 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000238366 Cephalopoda Species 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 241000191043 Rhodobacter sphaeroides Species 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000001963 growth medium Substances 0.000 description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- 235000019341 magnesium sulphate Nutrition 0.000 description 2
- 229940111688 monobasic potassium phosphate Drugs 0.000 description 2
- 235000019796 monopotassium phosphate Nutrition 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000192735 Chloroflexaceae Species 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229920000715 Mucilage Polymers 0.000 description 1
- 239000001888 Peptone Substances 0.000 description 1
- 108010080698 Peptones Proteins 0.000 description 1
- 241000191025 Rhodobacter Species 0.000 description 1
- 241000190932 Rhodopseudomonas Species 0.000 description 1
- 241000190967 Rhodospirillum Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 229940041514 candida albicans extract Drugs 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229940061607 dibasic sodium phosphate Drugs 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 229910001412 inorganic anion Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000013048 microbiological method Methods 0.000 description 1
- 235000019319 peptone Nutrition 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 235000014102 seafood Nutrition 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 239000012138 yeast extract Substances 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、有機物及び１％以上の
塩化ナトリウムを含有する廃水の微生物処理方法に関す
る。本発明は高濃度の有機物を含有する廃液の処理のた
めに特に有用である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for microbial treatment of wastewater containing organic matter and 1% or more of sodium chloride. The present invention is particularly useful for treating wastewater containing high concentrations of organic matter.
【０００２】0002
【従来の技術】水産加工場、有機化学工場等から出る廃
液は高濃度の有機物のほかに高濃度の塩化ナトリウムを
含有している場合が多い。これらの廃液を微生物により
処理するのは困難であり、廃液を濃縮した後水中燃焼を
行う方法等が行われていた。しかしながら、この方法に
おいては多大なエネルギーが必要であり、しかも高濃度
の塩化ナトリウムにより処理装置が塩害による腐蝕を受
けやすい等の問題点があった。BACKGROUND OF THE INVENTION Wastewater discharged from fisheries processing plants, organic chemical factories, etc. often contains high concentrations of sodium chloride as well as high concentrations of organic matter. It is difficult to treat these waste liquids with microorganisms, and methods such as concentrating the waste liquid and then burning it underwater have been used. However, this method requires a large amount of energy and has problems such as high concentration of sodium chloride, which makes the processing equipment susceptible to corrosion due to salt damage.
【０００３】0003
【発明が解決しようとする課題】従って本発明は、１％
以上の、例えば５％以上の塩化ナトリウムを含有する有
機廃液を希釈を必要としないで直接微生物処理する方法
を提供するものである。[Problems to be Solved by the Invention] Therefore, the present invention solves the problem of 1%
The object of the present invention is to provide a method for directly microbially treating organic waste liquid containing, for example, 5% or more of sodium chloride without the need for dilution.
【０００４】0004
【課題を解決するための手段】本発明者らは、上記の課
題を解決するため種々検討した結果、光合成細菌が塩基
性で且つ好気性条件下で、高濃度の塩化ナトリウムの存
在下でも有機物を分解することを見出し、本発明を完成
した。従って本発明は、有機物及び１％以上の塩化ナト
リウムを含有する廃液を中性ないし塩基性条件下で光合
成細菌により処理することを特徴とする有機物及び１％
以上の塩化ナトリウムを含有する廃液の処理方法を提供
するものである。
〔具体的な説明〕本発明においてＤＭＦ含有廃液を処理
するために用いられる光合成細菌は、例えばエクトチオ
ロスピリエーシエ（Ｅｃｔｏｔｈｉｏｒｈｏｓｐｒｉａ
ｃｅａｅ） 科、ロドスピリアエーシエ （Ｒｈｏｄｏ
ｓｐｉｒｉｌａｃｅａｅ） 科、又はクロロフレキシエ
ーシエ （Ｃｈｌｏｒｏｆｌｅｘａｃｅａｅ ） 科に
属するものである。これらの微生物は、例えばロドスピ
リラム（Ｒｈｏｄｏｓｐｉｒｉｌｌｕｍ）属、ロドシュ
ードモナス（Ｒｈｏｄｏｐｓｅｕｄｏｍｏｎｕｓ） 属
、ロドバクター（Ｒｈｏｄｏｂａｃｔｅｒ） 属、エク
トチオロドスピラー（Ｅｃｔｏｔｈｉｏｒｈｏｄｏｓｐ
ｉｒａ） 属、クロロフレキアス （Ｃｈｌｏｒｏｆｌ
ｅｘｕｓ） 属等に属する微生物であり、これらの微生
物は単独で使用することもでき、また処理すべき廃液の
種々の状況に対処するため混合して使用することもでき
る。これらの内ロドシュードモナス・スフェロイデスＳ
（Ｒｈｏｄｏｐｓｅｕｄｏｍｏｎａｓ ｓｐｈｅｒｏｉ
ｄｅｓ Ｓ） は工業技術院微生物工業技術研究所に微
工研菌寄第１４１０号（ＦＥＲＭ Ｐ−１４１０）とし
て寄託されており、その菌学的性質は特公昭５１−４３
３１１号明細書に記載されている。[Means for Solving the Problems] As a result of various studies to solve the above problems, the present inventors have discovered that photosynthetic bacteria can produce organic matter even in the presence of high concentrations of sodium chloride under basic and aerobic conditions. The present invention has been completed based on the discovery that decomposition of Therefore, the present invention is characterized in that a waste liquid containing organic matter and 1% or more of sodium chloride is treated with photosynthetic bacteria under neutral or basic conditions.
The present invention provides a method for treating waste liquid containing sodium chloride. [Specific Description] The photosynthetic bacteria used for treating the DMF-containing waste liquid in the present invention are, for example, Ectothiorhospiriae.
ceae) Family, Rhodospiria aceae
It belongs to the family spirilaceae or the family chloroflexaceae. These microorganisms include, for example, the genus Rhodospirillum, the genus Rhodopseudomonas, the genus Rhodobacter, and the genus Ectothiorhodosp.
ira) genus, Chloroflechias (Chlorofl)
These microorganisms belong to the genus P. exus), and these microorganisms can be used alone or in combination to deal with various situations of waste liquid to be treated. Among these, Rhodopseudomonas sphaeroides S.
(Rhodopseudomonas spheroi
des S) has been deposited with the National Institute of Microbiology, Agency of Industrial Science and Technology as Fiber Engineering Research Library No. 1410 (FERM P-1410), and its mycological properties were published in the Japanese Patent Publication No. 51-43.
It is described in the specification of No. 311.
【０００５】特にエクトチオロスピリエーシエ科に属す
る細菌はｐＨ７．５〜９．１の塩基性培地中で好んで生
育し、塩化ナトリウム濃度３％以上でなければ生育が促
進されないという特徴を有し、本発明の方法において使
用する光合成細菌として最適である。本発明の方法は有
機物のほかに１％以上の塩化ナトリウムを含有する廃液
の処理を目的とするものであるが、３％以上の塩化ナト
リウムを含有する有機性廃水に適用するのが有利であり
、さらに１０％以上の塩化ナトリウムを含有する有機廃
水にも有利に適用することができる。[0005] In particular, bacteria belonging to the family Ectothiolospiriaceae prefer to grow in a basic medium with a pH of 7.5 to 9.1, and their growth is not promoted unless the concentration of sodium chloride is 3% or higher. Therefore, it is optimal as a photosynthetic bacterium used in the method of the present invention. Although the method of the present invention is aimed at treating wastewater containing 1% or more sodium chloride in addition to organic matter, it is advantageous to apply it to organic wastewater containing 3% or more sodium chloride. Furthermore, it can be advantageously applied to organic wastewater containing 10% or more of sodium chloride.
【０００６】例えば、水産加工場、特にタコの加工場か
らの廃水は、タコの粘質物を飽和食塩水により除去する
過程で排水される廃水であって２０％以上の塩分を含有
している。実際に排出される場合にはこれに煮汁が加わ
ったものであり１０％以上の塩の濃度を有する。さらに
は、これらにイカの煮汁等が加わる場合が多く、廃水の
一例においては、ｐＨ６．８、全有機炭素量（ＴＯＣ）
約４，０００ｐｐｍ、生物学的酸素要求量（ＢＯＤ）
約８０００〜１０，０００ｐｐｍ 、塩水約１２％であ
る。この廃水は、特に栄養の添加を行わないで１日処理
すれば高分子有機物が低分子化し、当初の揮発生有機酸
（ＶＡ）約５００ｐｐｍは約２０００ｐｐｍ に増加す
る。[0006] For example, wastewater from a seafood processing plant, particularly an octopus processing plant, is wastewater discharged during the process of removing mucilage from the octopus using saturated saline, and contains 20% or more of salt. When it is actually discharged, it is mixed with broth and has a salt concentration of 10% or more. Furthermore, boiled squid juice is often added to these, and in one example, the wastewater has a pH of 6.8 and a total organic carbon content (TOC).
Approximately 4,000 ppm, biological oxygen demand (BOD)
About 8000-10,000 ppm, about 12% salt water. If this wastewater is treated for one day without adding nutrients, the high-molecular organic substances will become low-molecular, and the initial volatile organic acids (VA) will increase from about 500 ppm to about 2000 ppm.
【０００７】本発明の方法によれば、塩化ナトリウムを
１％、好ましくは１０％、さらに好ましくは１０％以上
含有する廃水を希釈することなくそのまま処理すること
ができる。しかしながら、高塩含有廃水は他の廃水によ
り希釈される場合もある。従って本発明は、廃液を希釈
後に処理する場合をも包含する。本発明の方法において
は、微生物を培地中で培養した後、培養物を多量にＤＭ
Ｆ含有廃水に加えて好気的条件下処理を行うことができ
る。
あるいはＤＭＦ含有廃水中に培養用栄養源を添化して廃
水を培養液とした後、これに少量の細菌を接種し、栄養
が添加された廃水中で好気的条件下で培養増殖させるこ
ともできる。この培養は回分式に行うこともでき、又は
連続式に行うこともできる。連続式に行う場合は、廃水
に培地用栄養源を添加した後、これを細菌培養中の処理
槽に一定速度で連続的に供給し、処理槽中の細菌を定常
状態に維持しながら他方で処理された廃水をぬき取る。According to the method of the present invention, wastewater containing 1%, preferably 10%, more preferably 10% or more of sodium chloride can be treated as is without dilution. However, high salt content wastewater may be diluted by other wastewaters. Therefore, the present invention also includes cases where the waste liquid is treated after being diluted. In the method of the present invention, after culturing microorganisms in a medium, a large amount of the culture is DM.
In addition to F-containing wastewater, treatment can be carried out under aerobic conditions. Alternatively, a nutrient source for culture may be added to DMF-containing wastewater to make the wastewater into a culture solution, and then a small amount of bacteria may be inoculated into this and cultured and grown under aerobic conditions in the nutrient-added wastewater. can. This culturing can be carried out batchwise or continuously. In the case of continuous operation, after adding nutrients for the culture medium to the wastewater, this is continuously supplied at a constant rate to the treatment tank where bacteria are being cultured, and while the bacteria in the treatment tank is maintained in a steady state, the Drain the treated wastewater.
【０００８】培地用栄養源として場合によってはカリウ
ム、マグネシウム、カリウム等の金属イオン及び硫酸イ
オン、リン酸イオン等の無機陰イオンが使用され、これ
らは例えば第一リン酸カリウム、第二リン酸ナトリウム
、塩化カリウム、硫酸マグネシウム等の形で添加される
。培地はさらに有機栄養素を含有することが必要又は好
ましい場合があり、これらの栄養源として例えば、酵素
エキス、ペプトンコーンスティープリカー等が使用され
る。In some cases, metal ions such as potassium, magnesium, and potassium, and inorganic anions such as sulfate ions and phosphate ions are used as nutrients for the culture medium, and these include monobasic potassium phosphate, dibasic sodium phosphate, etc. , potassium chloride, magnesium sulfate, etc. It may be necessary or preferable for the medium to further contain organic nutrients, for example enzyme extracts, peptone corn steep liquor, etc. are used as sources of these nutrients.
【０００９】培養は中性〜塩基性、又は好ましくは弱塩
基性下で行われ、例えばｐＨ６〜１２、好ましくはｐＨ
７．５〜９．０において行われる。ＤＭＦの効率的な処
理のためには培養は好気的条件下で行う必要があり、こ
の好気的条件は例えば通気、攪拌、又はこれらの両者に
より達成される。通気は、好ましくは溶存酸素（ＤＯ）
を０．２〜１．０ｇ／ｌに保持するように行い、培養は
好ましくは好気的条件下暗所にて、又は半好気的条件下
で明〜半明所にて行われる。培養温度は１０℃〜４５℃
、好ましくは３０℃〜３５℃である。[0009] Cultivation is carried out under neutral to basic conditions, or preferably under weak basic conditions, for example at pH 6 to 12, preferably at pH
7.5 to 9.0. For efficient treatment of DMF, the cultivation must be carried out under aerobic conditions, which can be achieved, for example, by aeration, agitation, or both. Aeration preferably includes dissolved oxygen (DO)
The culture is preferably carried out in the dark under aerobic conditions or in the light to semi-light under semi-aerobic conditions. Culture temperature is 10℃~45℃
, preferably 30°C to 35°C.
【００１０】処理の過程で、廃水中の有機物は本発明の
光合成細菌により分解・資化される。これにより、数日
間の培養の間にＤＭＦで代表される有機物（全有機炭素
量；ＴＯＣ）は９５％以上除去される。[0010] During the treatment process, organic matter in wastewater is decomposed and utilized by the photosynthetic bacteria of the present invention. As a result, over 95% of the organic matter represented by DMF (total organic carbon content; TOC) is removed during several days of cultivation.
【００１１】[0011]
【実施例】次に実施例により本発明をさらに具体的に説
明する。
実施例１．
タコ・イカ加工工場からの廃水（ｐＨ６．８、ＴＯＣ約
４，０００ｐｐｍ、ＢＯＤ約８，０００〜１０，０００
ｐｐｍ 、塩水約１２％）を、栄養を補充しないで廃水
中に存在する従属栄養細菌により１日間可溶化処理した
。この間に高分子有機物質は低分子化し、このため当初
約５００ｐｐｍあった揮発性有機酸が約２，０００ｐｐ
ｍに増加した。EXAMPLES Next, the present invention will be explained in more detail with reference to Examples. Example 1. Wastewater from an octopus and squid processing factory (pH 6.8, TOC approx. 4,000 ppm, BOD approx. 8,000-10,000
ppm, brine approximately 12%) was solubilized for 1 day with heterotrophic bacteria present in the wastewater without supplementation of nutrients. During this time, high-molecular organic substances became lower molecular weight, and as a result, volatile organic acids, which were originally about 500 ppm, decreased to about 2,000 ppm.
increased to m.
【００１２】この処理を終えた廃水のｐＨを水酸化ナト
リウムにより８．５に調整し、あらかじめ培養しておい
た光合成細菌懸濁液（細胞数１×１０９ 個／ｍｌ）（
約２０％のエクトチオロスピリエーシエ科細菌を含む）
を５％接種し、溶存酸素（ＤＯ）０．２〜０．５ｐｐｍ
程度となるように通気を行った。約４８時間通気する
ことにより、ＢＯＤの原因である揮発性有機酸（ＶＡ）
は６５ｐｐｍ に減少（９６．５％除去）し、ＴＯＣ値
は４２ｐｐｍ に低下（９９％除去） し、ＢＯＤは０
ｐｐｍ 程度となった。従って、１２％の食塩の存在は
無く障害とならなかった。
実施例２．
有機化学工場の廃水（エタノール約５％、エチレングリ
コール約１％、及び塩化ナトリウム約２０％を含有）
を水酸化ナトリウムによりｐＨ８．０に調整し、これに
０．８ｇ／リットルの第一リン酸カリウム、０．５ｇ／
リットルの硫酸アンモニウム、０．２ｇ／リットルの硫
酸マグネシウム、及び２０ｍｇ／リットルの酵母エキス
を添加した。これに光合成細菌懸濁液（細胞数１×１０
９ ／ｍｌ）（エクトチオロスピリエーシエ科細菌を約
２０％含有）を接種し、ＤＯが０．２〜０．５ｐｐｍ
となるように通気しながら約２０℃にて培養を行った。
これにより次の表１に示す結果が得られた。After this treatment, the pH of the wastewater was adjusted to 8.5 with sodium hydroxide, and a suspension of photosynthetic bacteria (cell number: 1 x 109 cells/ml) that had been cultured in advance was added.
Contains approximately 20% of Ectothiolospiliaceae bacteria)
5% inoculation, dissolved oxygen (DO) 0.2-0.5 ppm
Ventilation was carried out to maintain the same level of ventilation. By aerating for about 48 hours, volatile organic acids (VA), which is the cause of BOD, are removed.
decreased to 65 ppm (96.5% removal), TOC value decreased to 42 ppm (99% removal), and BOD decreased to 0.
It was about ppm. Therefore, the presence of 12% salt was not a problem. Example 2. Wastewater from an organic chemical factory (contains approximately 5% ethanol, approximately 1% ethylene glycol, and approximately 20% sodium chloride)
was adjusted to pH 8.0 with sodium hydroxide, and to this was added 0.8 g/liter of monobasic potassium phosphate, 0.5 g/liter
liter of ammonium sulfate, 0.2 g/liter of magnesium sulfate, and 20 mg/liter of yeast extract were added. Add to this a suspension of photosynthetic bacteria (1 x 10 cells)
9/ml) (containing about 20% Ectothiolospiliaceae bacteria), and the DO was 0.2 to 0.5 ppm.
Culture was carried out at approximately 20° C. with aeration so that As a result, the results shown in Table 1 below were obtained.
【００１３】[0013]
【表１】[Table 1]
【００１４】[0014]
【発明の効果】前記のごとく、本発明の方法によれば、
高濃度の塩化ナトリウムを含有し、従来は濃縮・焼却に
よらなければ完全な処理ができなかった有機廃水を、微
生物学的方法により簡単に処理することができる。[Effects of the Invention] As mentioned above, according to the method of the present invention,
Organic wastewater, which contains high concentrations of sodium chloride and could previously only be completely treated by concentration and incineration, can be easily treated using microbiological methods.
Claims (1)
を含有する廃液を中性ないし塩基性条件下で光合成細菌
により処理することを特徴とする、有機物及び１％以上
の塩化ナトリウムを含有する廃液の微生物的処理方法。Claim 1: A waste liquid containing organic substances and 1% or more sodium chloride, characterized in that the waste liquid containing organic substances and 1% or more sodium chloride is treated with photosynthetic bacteria under neutral or basic conditions. Microbial treatment methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14880391A JPH04371296A (en) | 1991-06-20 | 1991-06-20 | Biological treatment of organic waste water containing sodium chloride at high concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14880391A JPH04371296A (en) | 1991-06-20 | 1991-06-20 | Biological treatment of organic waste water containing sodium chloride at high concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04371296A true JPH04371296A (en) | 1992-12-24 |
Family
ID=15461060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14880391A Pending JPH04371296A (en) | 1991-06-20 | 1991-06-20 | Biological treatment of organic waste water containing sodium chloride at high concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04371296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010536561A (en) * | 2007-08-23 | 2010-12-02 | ダウ グローバル テクノロジーズ インコーポレイティド | Methods, adapted microorganisms, compositions and equipment for the purification of industrial brine |
-
1991
- 1991-06-20 JP JP14880391A patent/JPH04371296A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010536561A (en) * | 2007-08-23 | 2010-12-02 | ダウ グローバル テクノロジーズ インコーポレイティド | Methods, adapted microorganisms, compositions and equipment for the purification of industrial brine |
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