JP2744820B2 - Method for cleaning membranes in the process of burning soy sauce - Google Patents
Method for cleaning membranes in the process of burning soy sauceInfo
- Publication number
- JP2744820B2 JP2744820B2 JP1280450A JP28045089A JP2744820B2 JP 2744820 B2 JP2744820 B2 JP 2744820B2 JP 1280450 A JP1280450 A JP 1280450A JP 28045089 A JP28045089 A JP 28045089A JP 2744820 B2 JP2744820 B2 JP 2744820B2
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- soy sauce
- cleaning
- burning
- film
- 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
Landscapes
- Soy Sauces And Products Related Thereto (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、火入れ醤油を、膜、特に平板状多孔質膜を
装着してなる膜分離装置で処理して醤油を回収する工程
において、汚染した膜の表面を洗浄して、濾過流束を回
復させる方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a process for recovering soy sauce by treating burned soy sauce with a membrane, particularly a membrane separation device equipped with a flat porous membrane. Cleaning the surface of the membrane to recover the filtration flux.
醤油の製造工程の概略は、原料処理、製麺、仕込みに
よるもろみ製造、圧搾濾過、火入れ、そして後処理等か
らなっている。圧搾濾過された生醤油は通常80℃程度に
て火入れ処理される。この火入れ処理は、微生物の殺
菌、酵素の不活性化、そして香気の低い生醤油に火香を
与えて醤油らしい強い香りにするために行われる。火入
れ処理後、通常２〜10日間静置して自然冷却することに
より、蛋白質の凝固物やリン酸塩類等が沈澱して火入れ
おりとなる。所定日数経過後、その沈澱おりと上澄液と
を分離し、上澄液は透明度をよくするために、また微細
な固形物を除去するために珪藻土濾過を行う。一方沈澱
おりには醤油が通常70〜90％も含まれており、圧搾濾過
工程に戻してさらに醤油の回収が行われている。しかし
火入れ後は、味や香りが生醤油と異なってしまうため、
このような回収には問題がある。またこの沈澱おりから
の醤油の回収にも珪藻土濾過が行われる場合もあり、多
量に発生する腐敗成分を含有する珪藻土の廃棄は、近年
の環境問題の点から問題となっている。The outline of the soy sauce production process includes raw material processing, noodle making, moromi production by mashing, press filtration, burning, and post-treatment. The raw soy sauce that has been squeezed and filtered is usually heated at about 80 ° C. This burning treatment is performed in order to sterilize microorganisms, inactivate enzymes, and give a strong incense to raw soy sauce having a low fragrance to give a strong aroma similar to soy sauce. After the burning treatment, the mixture is allowed to stand still for 2 to 10 days and naturally cooled, so that coagulated proteins, phosphates, and the like precipitate, resulting in burning. After a predetermined number of days, the precipitate is separated from the supernatant, and the supernatant is subjected to diatomaceous earth filtration in order to improve the transparency and to remove fine solids. On the other hand, soy sauce is usually contained in the precipitate in an amount of 70 to 90%, and the soy sauce is recovered by returning to the squeezing filtration step. However, after burning, the taste and aroma will be different from raw soy sauce,
There is a problem with such recovery. In some cases, diatomaceous earth filtration is also performed to collect soy sauce from the sediment, and disposal of diatomaceous earth containing a large amount of putrefactive components has become a problem in view of environmental problems in recent years.
これらの問題を解決するために、火入れ直後の火入れ
醤油をそのまま平板状の多孔質膜にて濾過して醤油を回
収する方法が知られている（特開平１−171456号公
報）。In order to solve these problems, there is known a method in which hot soy sauce immediately after burning is filtered as it is through a flat porous membrane to recover soy sauce (Japanese Patent Application Laid-Open No. 1-171456).
しかしながら、かかる処理を連続的に長期間にわたっ
て行った場合や、処理すべき原液の液質が低劣な場合に
は、原液供給側の膜面に凝固した蛋白質、リン酸塩類、
微生物等（以下、ファウリング物質という）が堆積沈着
し、膜装置の濾過流束が低下し、分離性能を低下させ、
さらには膜モジュールの破損を招くこともある。However, when such a treatment is continuously performed for a long period of time, or when the liquid quality of the stock solution to be processed is poor, the proteins and phosphates solidified on the membrane surface on the stock solution supply side,
Microorganisms (hereinafter referred to as fouling substances) are deposited and deposited, the filtration flux of the membrane device is reduced, the separation performance is reduced,
Further, the membrane module may be damaged.
一方、一般に濾過流束の低下した膜の性能を回復させ
る方法として、汚染された膜を過酸化水素や塩素あるい
はアルカリ等の水溶液を用いて洗浄する方法が知られて
いる。On the other hand, as a method of restoring the performance of a membrane having a reduced filtration flux, a method of cleaning a contaminated membrane with an aqueous solution of hydrogen peroxide, chlorine, or alkali is generally known.
しかしながら、膜を構成する素材によっては、かかる
薬剤に対する耐性に限界があるので、膜洗浄における上
記薬剤水溶液の濃度のほか、洗浄の頻度や時間等が自ず
と限られることとなり、必ずしも十分に膜性能を回復さ
せることができない場合があった。さらに、薬剤を用い
る膜洗浄では、洗浄後の排液の廃棄の問題もあった。However, depending on the material constituting the membrane, there is a limit to the resistance to such a drug, so that in addition to the concentration of the above-mentioned drug aqueous solution in membrane washing, the frequency and time of washing are naturally limited, and the membrane performance is not necessarily sufficiently improved. In some cases it was not possible to recover. Further, in the case of membrane cleaning using a chemical, there is also a problem of disposal of the waste liquid after the cleaning.
本発明はかかる問題点を解決するためになされたもの
であって、特定の分野で汚染された膜、即ち醤油を膜分
離装置で処理して醤油を回収する工程において汚染した
膜に対しては、その表面を特定の温度以上の熱水で洗浄
するだけで、特有のファウリング物質を特に薬剤を使用
せずとも除去でき、極めて効果的に濾過流束を回復させ
ることができることを見い出して、本発明に至ったもの
である。The present invention has been made in order to solve such problems, and a membrane contaminated in a specific field, that is, a membrane contaminated in a process of collecting soy sauce by treating soy sauce with a membrane separation device. By simply cleaning the surface with hot water at a specific temperature or higher, it is possible to remove a specific fouling substance without using any special agent, and find that the filtration flux can be recovered very effectively. This has led to the present invention.
即ち本発明は、火入れ醤油を、膜を装着してなる膜分
離装置で処理して醤油を回収する工程において、汚染し
た膜の表面を、クロスフロー濾過方式にて60℃以上の熱
水で洗浄することを特徴とする膜の洗浄方法を提供す
る。That is, in the present invention, in the step of recovering soy sauce by treating a heated soy sauce with a membrane separation device equipped with a membrane, the surface of the contaminated membrane is washed with hot water of 60 ° C. or more by a cross flow filtration method. A method for cleaning a membrane is provided.
本発明が適用される工程における醤油とは、淡口、濃
口、濁り醤油等の火入れ処理が必要な醤油である。The soy sauce in the process to which the present invention is applied is a soy sauce that requires a burning treatment, such as a light mouth, a dark mouth, and a cloudy soy sauce.
本発明が適用される工程においては、火入れ処理後、
好ましくは火入れ処理直後の火入れ醤油を、膜、特に平
板状多孔質膜を装着してなる膜分離装置で処理すること
により、火入れ醤油中の蛋白質類の凝固物、微生物等を
除去して、窒素化合物等の有価成分を含んだ醤油を濾過
液側に回収する。In the process to which the present invention is applied, after the burning treatment,
Preferably, the burned soy sauce immediately after the burning treatment is treated with a membrane, particularly a membrane separation device equipped with a flat porous membrane, to remove coagulated proteins, microorganisms, etc. The soy sauce containing valuable components such as compounds is collected on the filtrate side.
本発明では、かかる処理により汚染した平板状多孔質
膜の表面を、60℃以上、好ましくは70〜80℃の熱水をク
ロスフローさせることによって洗浄する。ここで熱水の
温度が60℃未満の場合は、平板状多孔質膜表面に堆積沈
着したファウリング物質が十分に分解されないので好ま
しくない。また熱水の供給量は、通常５/min以上とす
るのが好ましい。In the present invention, the surface of the plate-shaped porous membrane contaminated by the treatment is washed by cross-flowing hot water at 60 ° C. or higher, preferably 70 to 80 ° C. Here, if the temperature of the hot water is lower than 60 ° C., the fouling substance deposited and deposited on the surface of the flat porous film is not sufficiently decomposed, which is not preferable. The supply amount of hot water is usually preferably 5 / min or more.
かかる洗浄により、膜表面に堆積しているファウリン
グ物質が分解、凝集して膜面より除去される。By such washing, fouling substances deposited on the film surface are decomposed and aggregated and removed from the film surface.
本発明においては、上記の熱水洗浄後に、供給量５
/min以上の高水量の冷水をさらに流すことによってより
洗浄効果を向上させることもできる。またこのような方
法をサイクル的に行うことによってより一層の洗浄効果
を上げることも可能である。In the present invention, after the above hot water washing, the supply amount is 5
The cleaning effect can be further improved by further flowing cold water having a high water volume of / min or more. Further, by performing such a method cyclically, it is possible to further enhance the cleaning effect.
本発明の方法を好適に適用し得る膜は、熱によって膜
性能や構造の変化しない膜材質、例えば、ポリテトラフ
ルオロエチレン系、ポリスルフォン系等の耐熱性を有す
る材質から構成された膜である。The film to which the method of the present invention can be suitably applied is a film material that does not change its film performance or structure by heat, for example, a film made of a heat-resistant material such as polytetrafluoroethylene-based or polysulfone-based. .
また本発明の方法が適用される醤油回収工程では、高
粘度の液でも濾過流束を大きくできるという点から、平
板状多孔質膜が好適に用いられる。また、この膜を装着
したモジュールとしては、例えばプレートアンドフレー
ム型やスパイラル型等が挙げられる。In addition, in the soy sauce recovery step to which the method of the present invention is applied, a flat porous membrane is preferably used because the filtration flux can be increased even with a highly viscous liquid. Further, examples of a module equipped with this film include a plate and frame type and a spiral type.
本発明は、醤油を膜分離装置で処理して醤油を回収す
る工程において汚染した膜を、薬剤を用いることなく熱
水で洗浄するだけで、特有のファウリング物質を除去で
きるため、膜を化学的に劣化させることなく、極めて効
果的に濾過流束を回復させることができる。さらに薬剤
を用いないので、その廃棄処理の問題もなく、経費の節
減にも役立つ。According to the present invention, a specific fouling substance can be removed simply by washing hot water without using chemicals in a process of collecting soy sauce by treating soy sauce with a membrane separation device. The filtration flux can be recovered very effectively without any deterioration. Further, since no chemicals are used, there is no problem of disposal, and the cost can be reduced.
以下に本発明の実施例を挙げるが、本発明はこれらに
限定されるものではない。Examples of the present invention will be described below, but the present invention is not limited thereto.
実施例 平均孔径0.2μｍの平板状多孔質膜（ポリテトラフル
オロエチレン系）を装着したプレートアンドフレーム型
膜分離装置（以下、P/Fと略す。）（有効膜面積3m2）を
用いて、60℃で火入れ醤油を平均圧力2kgf/cm2、線速1m
/secの条件下で処理したところ、濾過開始当初37.6/m
inであった濾過流束が、膜がファウリング物質で汚染さ
れた結果、23.9/minまで低下した。Example Using a plate and frame type membrane separation device (hereinafter abbreviated as P / F) equipped with a flat porous membrane (polytetrafluoroethylene type) having an average pore diameter of 0.2 μm (effective membrane area: 3 m 2 ), Burn soy sauce at 60 ° C, average pressure 2kgf / cm 2 , linear velocity 1m
After processing under the conditions of / sec, filtration start 37.6 / m
The filtration flux, which was in, dropped to 23.9 / min as a result of fouling of the membrane.
そこでまず、P/Fに75℃以上の熱水10/minを15分間
クロスフロー循環した後、10℃以下の冷水を15分間流す
ことにより、濾過流束は34.5/minまで回復した。Therefore, first, the hot water of 75 ° C. or more was cross-flow circulated through the P / F for 15 minutes, and then the cold flux of 10 ° C. or less was flowed for 15 minutes to recover the filtration flux to 34.5 / min.
さらに、上記の操作を連続して４回行った結果、濾過
流束は37.4/minまで回復した。Further, as a result of performing the above operation four times in succession, the filtration flux recovered to 37.4 / min.
Claims (3)
置で処理して醤油を回収する工程において、汚染した膜
の表面を、クロスフロー濾過方式にて60℃以上の熱水で
洗浄することを特徴とする膜の洗浄方法。In the process of recovering soy sauce by treating a heated soy sauce with a membrane separation device equipped with a membrane, the surface of the contaminated membrane is washed with hot water of 60 ° C. or more by a cross flow filtration method. A method for cleaning a membrane, comprising:
系又はポリスルフォン系である請求項（１）記載の膜の
洗浄方法。2. The method for cleaning a film according to claim 1, wherein the material of the film is polytetrafluoroethylene or polysulfone.
である請求項（１）記載の膜の洗浄方法。3. The method for cleaning a membrane according to claim 1, wherein the membrane separation apparatus is a plate and frame type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280450A JP2744820B2 (en) | 1989-10-26 | 1989-10-26 | Method for cleaning membranes in the process of burning soy sauce |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280450A JP2744820B2 (en) | 1989-10-26 | 1989-10-26 | Method for cleaning membranes in the process of burning soy sauce |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03143533A JPH03143533A (en) | 1991-06-19 |
| JP2744820B2 true JP2744820B2 (en) | 1998-04-28 |
Family
ID=17625230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1280450A Expired - Lifetime JP2744820B2 (en) | 1989-10-26 | 1989-10-26 | Method for cleaning membranes in the process of burning soy sauce |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2744820B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4767719B2 (en) * | 2005-04-15 | 2011-09-07 | 花王株式会社 | Method for producing liquid seasoning |
| DE102009016490A1 (en) * | 2009-04-06 | 2010-10-14 | Krones Ag | Production of soy sauce by means of precoat candle filter |
| JP7182960B2 (en) * | 2017-09-07 | 2022-12-05 | 旭化成株式会社 | SOY SAUCE MANUFACTURING METHOD USING POROUS MEMBRANE |
| CN108056494A (en) * | 2018-01-31 | 2018-05-22 | 湖北中烟工业有限责任公司 | A kind of system and method for improving recombination tobacco leaf and wrapping up in clothing coating fluid degree of purity |
-
1989
- 1989-10-26 JP JP1280450A patent/JP2744820B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03143533A (en) | 1991-06-19 |
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