JPH0596281A - Treatment of starch-containing waste water - Google Patents
Treatment of starch-containing waste waterInfo
- Publication number
- JPH0596281A JPH0596281A JP26206791A JP26206791A JPH0596281A JP H0596281 A JPH0596281 A JP H0596281A JP 26206791 A JP26206791 A JP 26206791A JP 26206791 A JP26206791 A JP 26206791A JP H0596281 A JPH0596281 A JP H0596281A
- Authority
- JP
- Japan
- Prior art keywords
- starch
- waste water
- added
- treatment
- water
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はスターチを含有する排水
の処理方法に関する。FIELD OF THE INVENTION The present invention relates to a method for treating wastewater containing starch.
【０００２】[0002]
【従来の技術】スターチは溶解性有機物であるため、完
全な除去を目的とする場合は活性汚泥法および散水濾床
法等の生物学的処理が必要となる。しかし生物学的処理
は設置面積、設備費用等が多大であるため、季節に関係
なく年間を通し、連続して排出される工場でないと経済
的に建設されにくい。2. Description of the Related Art Since starch is a soluble organic substance, biological treatment such as an activated sludge method and a sprinkling filter method is required for the purpose of complete removal. However, biological treatment requires a large amount of floor space, equipment costs, etc., so it is economically difficult to construct it unless it is a factory that discharges continuously throughout the year regardless of the season.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の、スターチ
を含有する排水の処理方法は、完全を期するためには生
物学的処理を必要としたが、それを行なうためには多大
の設備面積、設備費を要するという問題があった。The above-mentioned conventional method for treating wastewater containing starch requires biological treatment in order to achieve completeness, but in order to do so, a large equipment area is required. However, there was a problem that equipment costs were required.
【０００４】本発明は生物学的処理でなく、経済的に安
価な凝集沈殿処理でスターチ含有排水の処理を可能にす
る処理方法を提供することを目的とする。It is an object of the present invention to provide a treatment method which makes it possible to treat starch-containing wastewater not by biological treatment but by economically inexpensive coagulation-sedimentation treatment.
【０００５】[0005]
【課題を解決するための手段】本発明は上記課題の解決
手段として、スターチ含有排水に水に不溶な無機系粉末
を填料として添加し、混合攪拌した後、無機凝集剤を添
加攪拌し、次いで、上記排液のｐＨを調整した後、更に
高分子凝集剤を添加し攪拌することを特徴とするスター
チ含有排水の処理方法を提供しようとするものである。Means for Solving the Problems As a means for solving the above problems, the present invention comprises adding a water-insoluble inorganic powder as a filler to starch-containing wastewater, mixing and stirring, and then adding and stirring an inorganic coagulant, and then stirring. Another object of the present invention is to provide a method for treating starch-containing wastewater, which comprises adding a polymer coagulant and then stirring the solution after adjusting the pH of the wastewater.
【０００６】[0006]
【作用】本発明は上記のように構成されるので次の作用
を有する。Since the present invention is constructed as described above, it has the following actions.
【０００７】即ち、スターチ含有排水に、水に不溶な無
機系粉末を添加し、更に、無機凝集剤、次いで、高分子
凝集剤を加えるため、凝集する核ができ、これにより凝
集が可能になり、凝集する時スターチを吸着し、凝集沈
殿により、除去できる。That is, since water-insoluble inorganic powder is added to the starch-containing wastewater, and further an inorganic coagulant and then a polymer coagulant are added, a core for coagulation is formed, which enables coagulation. It can be removed by adsorbing starch when agglomerating and by aggregating and precipitating.
【０００８】[0008]
【実施例】本発明の一実施例の方法について説明する。EXAMPLE A method of an example of the present invention will be described.
【０００９】説明はスターチ濃度が２５００ｐｐｍの排
水について行なう。排水に対し、クレーを２５，０００
ｐｐｍ（スターチ濃度の１０倍）添加し、１０分間急速
攪拌を行ない、よく分散させる。次に通常の無機凝集剤
であるポリ塩化アルミニウム（Ａｌ2 Ｏ3 として１０％
の液体）を１０，０００ｐｐｍ（スターチ濃度の４倍）
添加し、攪拌する。ｐＨ５〜７になる様に水酸化ナトリ
ウムを添加し、１０分間急速攪拌を行なう。次にノニオ
ン系高分子凝集剤を５００ｐｐｍ（スターチ濃度の１／
５）添加し、５分間緩速攪拌を行なう。この条件では表
１に示すように充分凝集し、スターチも除去された。The explanation will be made for wastewater having a starch concentration of 2500 ppm. 25,000 clay for drainage
Add ppm (10 times the starch concentration) and perform rapid stirring for 10 minutes to disperse well. Next, polyaluminum chloride which is an ordinary inorganic coagulant (10% as Al 2 O 3
Liquid) of 10,000 ppm (4 times the starch concentration)
Add and stir. Sodium hydroxide is added so that the pH becomes 5 to 7, and rapid stirring is performed for 10 minutes. Next, 500 ppm of the nonionic polymer flocculant (1 / starch concentration 1 /
5) Add and stir slowly for 5 minutes. Under these conditions, as shown in Table 1, the agglomerates were sufficiently aggregated and the starch was also removed.
【００１０】[0010]
【表１】 [Table 1]
【００１１】核となる物質はクレーだけでなくカオリ
ン、炭酸カルシウム、二酸化チタンの様な物質で水に溶
解せず、比重の高いものならよい。The core substance is not only clay but also kaolin, calcium carbonate, titanium dioxide or the like, which does not dissolve in water and has a high specific gravity.
【００１２】無機凝集剤はポリ塩化アルミニウムだけで
なく、通常使用されている硫酸アルミニウム、硫酸第一
鉄、硫酸第二鉄、塩化第二鉄等でもよい。The inorganic coagulant may be not only polyaluminum chloride but also commonly used aluminum sulfate, ferrous sulfate, ferric sulfate, ferric chloride and the like.
【００１３】高分子凝集剤はノニオン系だけでなくアニ
オン系も有効である。As the polymer flocculant, not only nonionic type but also anionic type is effective.
【００１４】[0014]
【発明の効果】本発明は上記のように構成されるので次
の効果を有する。 （１） 安価な設備費で済む。 （２） 敷地面積も小さくて済む。 （３） 断続的にスターチ排水が流出する場合、スター
チ排水が出なくなった時、従来の生物処理方法ではバク
テリアを生かすために、栄養物を与えてやる必要がある
のに対し、本発明の方法の凝集沈殿処理方法では排水が
流出した時のみ運転すればよい。Since the present invention is constructed as described above, it has the following effects. (1) Inexpensive equipment costs are sufficient. (2) The site area can be small. (3) When the starch drainage flows out intermittently, when the starch drainage stops, the conventional biological treatment method needs to provide nutrients in order to utilize the bacteria, whereas the method of the present invention. In the coagulation-sedimentation treatment method, the operation may be performed only when the wastewater flows out.
Claims (1)
末を填料として添加し、混合攪拌した後、無機凝集剤を
添加攪拌し、次いで、上記排液のｐＨを調整した後、更
に高分子凝集剤を添加し攪拌することを特徴とするスタ
ーチ含有排水の処理方法。1. A water-insoluble inorganic powder as a filler is added to starch-containing wastewater, the mixture is stirred and mixed, an inorganic coagulant is added and stirred, and then the pH of the discharged liquid is adjusted, and then a polymer is further added. A method for treating starch-containing wastewater, which comprises adding a flocculant and stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26206791A JPH0596281A (en) | 1991-10-09 | 1991-10-09 | Treatment of starch-containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26206791A JPH0596281A (en) | 1991-10-09 | 1991-10-09 | Treatment of starch-containing waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0596281A true JPH0596281A (en) | 1993-04-20 |
Family
ID=17370572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26206791A Withdrawn JPH0596281A (en) | 1991-10-09 | 1991-10-09 | Treatment of starch-containing waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0596281A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105084488A (en) * | 2015-09-10 | 2015-11-25 | 苏州凯欧曼新材料科技有限公司 | Nano water treatment flocculation material and preparation method thereof |
| CN110950410A (en) * | 2018-09-26 | 2020-04-03 | 光大水务（深圳）有限公司 | Heavy medium coagulating sedimentation water treatment method |
| CN113104943A (en) * | 2021-04-15 | 2021-07-13 | 张婉琴 | Emergency treatment method for sudden coal water slurry pollution accident of riverway |
-
1991
- 1991-10-09 JP JP26206791A patent/JPH0596281A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105084488A (en) * | 2015-09-10 | 2015-11-25 | 苏州凯欧曼新材料科技有限公司 | Nano water treatment flocculation material and preparation method thereof |
| CN110950410A (en) * | 2018-09-26 | 2020-04-03 | 光大水务（深圳）有限公司 | Heavy medium coagulating sedimentation water treatment method |
| CN113104943A (en) * | 2021-04-15 | 2021-07-13 | 张婉琴 | Emergency treatment method for sudden coal water slurry pollution accident of riverway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990107 |