JPH04135693A - Neutralization treatment of industrial waste liquid - Google Patents
Neutralization treatment of industrial waste liquidInfo
- Publication number
- JPH04135693A JPH04135693A JP41621190A JP41621190A JPH04135693A JP H04135693 A JPH04135693 A JP H04135693A JP 41621190 A JP41621190 A JP 41621190A JP 41621190 A JP41621190 A JP 41621190A JP H04135693 A JPH04135693 A JP H04135693A
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- industrial waste
- capsule
- chemicals
- neutralizers
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 48
- 239000002440 industrial waste Substances 0.000 title claims abstract description 24
- 238000006386 neutralization reaction Methods 0.000 title abstract description 13
- 239000002775 capsule Substances 0.000 claims abstract description 33
- 230000002378 acidificating effect Effects 0.000 claims abstract description 11
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 16
- 239000003814 drug Substances 0.000 claims description 10
- 229940079593 drug Drugs 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 24
- 239000000126 substance Substances 0.000 abstract description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract description 6
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004952 Polyamide Substances 0.000 abstract description 2
- 239000004962 Polyamide-imide Substances 0.000 abstract description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004327 boric acid Substances 0.000 abstract description 2
- 229920002678 cellulose Polymers 0.000 abstract description 2
- 239000001913 cellulose Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- JYIZNFVTKLARKT-UHFFFAOYSA-N phenol;1,3,5-triazine-2,4,6-triamine Chemical compound OC1=CC=CC=C1.NC1=NC(N)=NC(N)=N1 JYIZNFVTKLARKT-UHFFFAOYSA-N 0.000 abstract description 2
- 229920002647 polyamide Polymers 0.000 abstract description 2
- 229920002312 polyamide-imide Polymers 0.000 abstract description 2
- 229920000728 polyester Polymers 0.000 abstract description 2
- 239000007859 condensation product Substances 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
Abstract
Description
［０００１］ [0001]
この発明は、主として強アルカリ性または強酸性の卒業
廃液のための中和処理方法に関するものである。
［０００２］The present invention mainly relates to a method for neutralizing a strongly alkaline or strongly acidic graduated waste liquid. [0002]
一般に、産業廃液の中和処理方法としては、次のような
方法が広く用いられている。
■ 産業廃液内に薬注ポンプで中和用薬剤を注入する方
式であって、被処理廃液のｐＨ値をセンサーで検出して
前記薬注ポンプの薬注量或いは薬注時間を制御する■
強酸性の産業廃液を石灰石層に通して中和処理する。
■ 強アルカリ性の産業廃液中に炭酸ガスを注入して中
和処理する。
［０００３］Generally, the following methods are widely used as a method for neutralizing industrial waste liquid. ■ A method in which neutralizing chemicals are injected into industrial waste liquid using a chemical injection pump, and the pH value of the waste liquid to be treated is detected by a sensor to control the chemical injection amount or chemical injection time of the chemical injection pump.■
Strongly acidic industrial waste liquid is neutralized by passing it through a limestone layer. ■ Neutralize strongly alkaline industrial waste liquid by injecting carbon dioxide gas. [0003]
上述の中和処理方法のうち、■のｐＨセンサーと薬注ポ
ンプとを用いて自動制御する方法は、ｐＨセンサーの保
守に手間がかかり、制御系が誤動作した場合に中和用薬
剤による２次公害のおそれがある。これに対し、■の石
灰石層を用いる方法は、反応が遅く、中和処理に時間が
かかるという欠点がある。また、■の炭酸ガスを用いる
方法はコストが高いという問題があり、それぞれ何らが
の欠点を有しでいる。
［０００４］Among the above neutralization processing methods, the automatic control method using a pH sensor and a chemical injection pump requires time and effort to maintain the pH sensor, and if the control system malfunctions, the secondary There is a risk of pollution. On the other hand, method (2) using a limestone layer has the disadvantage that the reaction is slow and the neutralization process takes time. In addition, the method (2) using carbon dioxide gas has the problem of high cost, and each method has its own drawbacks. [0004]
この発明は、上述の問題点に鑑み、特別な制御装置を必
要とせず、また２次公害のない中和処理を実現しようと
するもので、具体的には、酸性またはアルカリ性の産業
廃液中において溶解可能な材料からなるカプセル内に、
該産業廃液中和用の薬剤を封入し、該封入形成したカプ
セル入り中和剤を前記産業廃液中に適量浸漬することを
特徴とする産業廃液の中和処理方法を提供するものであ
る。
［０００５］In view of the above-mentioned problems, this invention aims to realize neutralization treatment that does not require a special control device and does not cause secondary pollution. In a capsule made of dissolvable material,
The present invention provides a method for neutralizing industrial waste liquid, which comprises encapsulating a chemical for neutralizing the industrial waste liquid, and immersing an appropriate amount of the encapsulated neutralizer in a capsule into the industrial waste liquid. [0005]
この発明の産業廃液の中和処理方法は、強アルカリ性ま
たは強酸性の産業廃液の排出ラインに対して適用される
もので、カプセル入り中和剤を、所定のｐＨ値（例えば
ｐＨ１０以上、或いはｐＨ４以下）の産業廃液に予め定
めた適量を浸漬すると、各カプセル入り中和剤の外殻を
形成するカプセルが溶解し、内部の薬剤が露出七で廃液
と混合される（第６図参照）。これによって、流出した
薬剤は廃液と反応し、廃液のｐＨ値を下げて（或いは上
げて）中和処理が為される。
［０００６］The method for neutralizing industrial waste liquid of the present invention is applied to the discharge line of strongly alkaline or strongly acidic industrial waste liquid, and the encapsulated neutralizer is heated to a predetermined pH value (for example, pH 10 or higher, or pH 4). When a predetermined amount is immersed in the industrial waste liquid (see below), the capsule forming the outer shell of each capsule neutralizer dissolves, and the drug inside is mixed with the waste liquid at the exposed point (see Figure 6). As a result, the outflowing chemical reacts with the waste liquid, and the pH value of the waste liquid is lowered (or increased) to perform neutralization treatment. [0006]
以下、この発明の好ましい実施例を図面に基づいて説明
する。
［０００７］
図中（１）はカプセル入り中和剤であり、カプセル（２
）内に薬剤（３）を封入して構成する。前記カプセル（
２）は、所定のｐＨ値の産業廃液中に加速度的に溶解す
る材料を用い、例えば強アルカリ性の産業廃液に対して
はｐＨ１０以上で、強酸性の産業廃液に対してはｐＨ４
以下でそれぞれ溶解し、ｐＨ６〜８では化学的に安定し
た材料を用いる。カプセル材料の具体例としては、強ア
ルカリ性産業廃液用にはポリアミドイミド、ポリエステ
ル、セルロース等が、強酸性産業廃液用にはポリアミド
、メラミンフェノール共縮合物等がある。また、前記カ
プセル（２）の内部に封入する中和用薬剤（３）の具体
例としては、強アルカリ性卒業廃液用にはホウ酸、クエ
ン酸、フタル酸等を、強酸性産業廃液用には水酸化ナト
リウム、水酸化カリラム等を用いる。
［０００８］
上記のカプセル入り中和剤（１）の製造方法の一例とし
ては、粒状の薬剤（３）にカプセル材料をスプレーコー
ティングし、その１つぶ１つぶを転動させて形を整える
ようにするとともにカプセル材料を凝固させる方法を用
いることができる。
［０００９］
第２図〜第４図に示す実施例は、一端に流入管（５）を
他端に流出管（６）を接続した円筒部材（４）中に、カ
プセル入り中和剤（１）を多数充填したものである。（
７）はカプセル入り中和剤（１）を保持するための網状
部材である。第２図に示す実施例は強アルカリ性廃液用
のカプセル入り中和剤（１ａ）を、第３図に示す実施例
は強酸性廃液用のカプセル入り中和剤（１ｂ）を充填し
たものであり、第４図に示す実施例は両方のカプセル入
り中和剤（Ｉａ）、 （ｌｂ）を混在させて充填したも
ので、廃液が強アルカリ性であっても強酸性であっても
どちらの廃液にも用いることができる。また、円筒部材
（４）内におけるカプセル入り中和剤（１）の充填量、
すなわち廃液への浸漬量は、廃液の量および廃液の濃度
等を考慮して予め定められる。
［００１０３
また、カプセル（２）が溶解し薬剤（３）が廃液と反応
するためには、ある程度の反応時間を必要とするが、第
５図に示すように、円筒部材（４）内に下方より廃液を
供給し、完全に中和処理が為されるまで廃液を円筒部材
（４）内に溜めておき、中和処理後、処理された分の廃
液だけ上方より排出するようにしてもよい。
［００１１３
【発明の効果］
この発明は、以上のような構成であり、所定のｐＨ値の
廃液に浸漬すると、薬剤を被っているカプセルが溶解し
、薬剤が自然と流出して中和処理が為されるので、特別
なセンサー或いは制御装置を必要とせず、低コストで中
和処理を行うことができる。また、カプセルはｐＨ６〜
８では化学的に安定しているので、中和処理が完了し廃
液のｐＨが６〜８になれば、円筒部材内に残ったカプセ
ルの溶解が止まリ、過度に薬剤が流出しないので、
中和用薬剤の過度流出による２次公害の心配もない。Preferred embodiments of the present invention will be described below with reference to the drawings. [0007] In the figure, (1) is a neutralizer containing a capsule, and the capsule (2) is a neutralizer containing a capsule.
) The drug (3) is enclosed within the container. The capsule (
2) uses a material that dissolves at an accelerated rate in an industrial waste liquid with a predetermined pH value.
Use materials that are soluble below and chemically stable at pH 6 to 8. Specific examples of capsule materials include polyamideimide, polyester, cellulose, etc. for strongly alkaline industrial wastewater, and polyamide, melamine-phenol cocondensates, etc. for strongly acidic industrial wastewater. Further, specific examples of the neutralizing agent (3) to be sealed inside the capsule (2) include boric acid, citric acid, phthalic acid, etc. for strongly alkaline graduated waste liquid, and for strongly acidic industrial waste liquid, etc. Sodium hydroxide, potassium hydroxide, etc. are used. [0008] An example of a method for producing the capsule-filled neutralizer (1) is to spray-coat the granular drug (3) with capsule material and roll the particles one by one to adjust the shape. At the same time, a method of coagulating the capsule material can be used. [0009] In the embodiment shown in FIGS. 2 to 4, a encapsulated neutralizer (1 ). (
7) is a net-like member for holding the encapsulated neutralizer (1). The example shown in Figure 2 is filled with a capsule-filled neutralizer (1a) for strongly alkaline waste liquid, and the example shown in Figure 3 is filled with a capsule-filled neutralizer (1b) for strongly acidic waste liquid. In the example shown in Fig. 4, both capsule neutralizers (Ia) and (lb) are mixed and filled, so that no matter whether the waste liquid is strongly alkaline or strongly acidic, it can be used in either case. can also be used. In addition, the filling amount of the encapsulated neutralizer (1) in the cylindrical member (4),
That is, the amount of immersion in the waste liquid is determined in advance by taking into account the amount of waste liquid, the concentration of the waste liquid, and the like. [00103 In addition, a certain amount of reaction time is required for the capsule (2) to dissolve and the drug (3) to react with the waste liquid, but as shown in FIG. It is also possible to supply more waste liquid, store the waste liquid in the cylindrical member (4) until complete neutralization treatment, and after the neutralization treatment, only the treated amount of waste liquid can be discharged from above. . [00113] [Effects of the Invention] The present invention has the above-described configuration, and when immersed in waste liquid having a predetermined pH value, the capsule covering the drug dissolves, the drug naturally flows out, and the neutralization process is completed. Therefore, the neutralization process can be performed at low cost without requiring any special sensor or control device. In addition, the capsule has a pH of 6~
8 is chemically stable, so once the neutralization process is completed and the pH of the waste liquid reaches 6 to 8, the capsules remaining in the cylindrical member will stop dissolving, and the drug will not flow out excessively. There is no need to worry about secondary pollution caused by excessive leakage of Japanese medicines.
１図１】
この発明におけるカプセル入り中和剤の拡大縦断面図で
ある。FIG. 1 is an enlarged longitudinal cross-sectional view of a capsule-filled neutralizer according to the present invention.
【図２】
この発明におけるカプセル入り中和剤の使用状態の具体
例を示す縦断面図である。
１図３】
この発明におけるカプセル入り中和剤の使用状態の具体
例を示す縦断面図である。FIG. 2 is a longitudinal cross-sectional view showing a specific example of how the capsule-filled neutralizer of the present invention is used. FIG. 1 is a vertical cross-sectional view showing a specific example of how the capsule-filled neutralizer of the present invention is used.
【図４】
この発明におけるカプセル入り中和剤の使用状態の具体
例を示す縦断面図である。FIG. 4 is a longitudinal cross-sectional view showing a specific example of how the capsule-filled neutralizer of the present invention is used.
【図５】
この発明におけるカプセル入り中和剤の使用状態の具体
例を示す縦断面図である。FIG. 5 is a vertical cross-sectional view showing a specific example of how the capsule-filled neutralizer of the present invention is used.
【図６】
この発明におけるカプセル入り中和剤の溶出状態を示す
拡大縦断面図である。FIG. 6 is an enlarged longitudinal cross-sectional view showing the state of elution of the encapsulated neutralizer in the present invention.
カプセル入り中和剤 強アルカリ性廃液用のカプセル入り中和剤ｂ 強酸性廃液用のカプセル入り中和剤 力 プセル 薬剤 円筒部材 流入管 流出管 網状部材 Neutralizer in capsules Capsule neutralizer b for strongly alkaline waste liquid Capsule neutralizer for strongly acidic waste liquid Power psel drug Cylindrical member inflow pipe outflow pipe mesh member
【図１】 図面 廃 １＾ 凸[Figure 1] drawing Abandoned 1^ Convex
【図３】[Figure 3]
【図３】 廃 液 凸 凸 凸[Figure 3] waste liquid Convex Convex Convex
【図４】[Figure 4]
【図５】[Figure 5]
【図６】[Figure 6]
Claims (1)
て溶解可能な材料からなるカプセル（２）内に、該産業
廃液中和用の薬剤（３）を封入し、該封入形成したカプ
セル入り中和剤（１）を前記産業廃液中に適量浸漬する
ことを特徴とする産業廃液の中和処理方法。[Claim 1] A neutralizing agent in capsules, in which a drug (3) for neutralizing industrial waste liquid is encapsulated in a capsule (2) made of a material that can be dissolved in acidic or alkaline industrial waste liquid. A method for neutralizing industrial waste liquid, which comprises immersing an appropriate amount of (1) in the industrial waste liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41621190A JPH04135693A (en) | 1990-12-28 | 1990-12-28 | Neutralization treatment of industrial waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41621190A JPH04135693A (en) | 1990-12-28 | 1990-12-28 | Neutralization treatment of industrial waste liquid |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26027188A Division JPH02107395A (en) | 1988-10-14 | 1988-10-14 | Capsulated neutralization agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04135693A true JPH04135693A (en) | 1992-05-11 |
Family
ID=18524452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP41621190A Pending JPH04135693A (en) | 1990-12-28 | 1990-12-28 | Neutralization treatment of industrial waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04135693A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006102705A (en) * | 2004-10-08 | 2006-04-20 | Noda:Kk | Cement draining sheet and cement draining treatment method |
-
1990
- 1990-12-28 JP JP41621190A patent/JPH04135693A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006102705A (en) * | 2004-10-08 | 2006-04-20 | Noda:Kk | Cement draining sheet and cement draining treatment method |
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