JPS62191096A - Waste water treatment method - Google Patents
Waste water treatment methodInfo
- Publication number
- JPS62191096A JPS62191096A JP3228686A JP3228686A JPS62191096A JP S62191096 A JPS62191096 A JP S62191096A JP 3228686 A JP3228686 A JP 3228686A JP 3228686 A JP3228686 A JP 3228686A JP S62191096 A JPS62191096 A JP S62191096A
- Authority
- JP
- Japan
- Prior art keywords
- exchange resin
- treated
- anion exchange
- basic anion
- 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.)
- Granted
Links
- 238000004065 wastewater treatment Methods 0.000 title claims description 3
- 239000003957 anion exchange resin Substances 0.000 claims abstract description 25
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003729 cation exchange resin Substances 0.000 claims abstract description 12
- 150000001768 cations Chemical class 0.000 claims abstract description 6
- 239000002351 wastewater Substances 0.000 claims abstract description 6
- 230000002378 acidificating effect Effects 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 239000000126 substance Substances 0.000 abstract description 9
- 150000001450 anions Chemical class 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 6
- 239000002699 waste material Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000000428 dust Substances 0.000 description 7
- 239000003456 ion exchange resin Substances 0.000 description 7
- 229920003303 ion-exchange polymer Polymers 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産１上皇且里分１
本発明は、イオン交換樹脂を用いて陽イオンを含む酸性
廃水を処理する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating acidic wastewater containing cations using an ion exchange resin.
従来夏技玉
従来、イオン交換樹脂を用いて酸性廃水を処理する場合
、最初に弱塩基性陰イオン交換樹脂で処理し、次に、強
酸性陽イオン交換樹脂で処理した後、強塩基性陰イオン
交換樹脂で処理している。Traditionally, when acidic wastewater is treated using ion exchange resins, it is first treated with a weakly basic anion exchange resin, then treated with a strongly acidic cation exchange resin, and then treated with a strongly basic anion exchange resin. Treated with ion exchange resin.
（・°しよ゛と る四 占
しかしながら、廃水中にＮ Ｈ４” 、Ｎ ａ 十、Ｋ
十等の陽イオンが存在すると、イオン交換樹脂の周りが
、アルカリ性になる。ところが、弱塩基性陰イオン交換
樹脂が有効に働＜ｐＨは、０〜８であるから、前記の従
来方法において、イオン交換樹脂の周囲がアルカリ性に
なると、弱塩基性陰イオン交換樹脂のイオン交換能力が
小さくなるという欠点がある。(・°)However, there are NH4'', Na 10, K in the wastewater.
When cations of magnitude 10 exist, the area around the ion exchange resin becomes alkaline. However, since the weakly basic anion exchange resin works effectively at a pH of 0 to 8, in the conventional method described above, when the surroundings of the ion exchange resin become alkaline, the ion exchange of the weakly basic anion exchange resin The disadvantage is that the capacity is reduced.
従って、本発明は、前記従来技術の欠点を解消し、従来
法により通水時間が長く、再生薬品も従来より少なく、
全体として設備償却費を含めたランニングコストの低減
を図る方法を提供することを目的とする。Therefore, the present invention eliminates the drawbacks of the prior art, has a longer water flow time than the conventional method, requires less regeneration chemicals, and
The purpose is to provide a method for reducing overall running costs including equipment depreciation costs.
。 占 η° ための び
本発明は、弱塩基性陰イオン交換樹脂を用いて酸性物質
を除去した後、陽イオン交換樹脂で処理し、再び弱塩基
性陰イオン交換樹脂で処理して陰イオンを除去すること
によって前記の問題点を解決したものである。. According to the present invention, acidic substances are removed using a weakly basic anion exchange resin, then treated with a cation exchange resin, and then treated again with a weakly basic anion exchange resin to remove anions. The above problem is solved by removing it.
即ち、本発明による廃水の処理方法は、最初に弱塩基性
陰イオン交換樹脂を用いて処理し、次に、強酸性陽イオ
ン交換樹脂、弱塩基性陰イオン交換樹脂及び強塩基性陰
イオン交換樹脂をこの順序で用いて処理することを特徴
とする。That is, in the wastewater treatment method according to the present invention, the treatment is first performed using a weakly basic anion exchange resin, and then the treatment is performed using a strongly acidic cation exchange resin, a weakly basic anion exchange resin, and a strongly basic anion exchange resin. The treatment is characterized by using resins in this order.
前記のように本発明方法においては、まず、躬塩基性陰
イオン交換樹脂で処理するが、この処理工程は陰イオン
を交換することを目的とするとするのではなく、ＮＯ３
−等の酸性物質を除去することを主目的とする。酸性物
質を除去した後に、陽イオン交換樹脂で処理しなければ
、陽イオン交換樹脂の反応基がこわされ、劣化する。As mentioned above, in the method of the present invention, treatment is first performed with a basic anion exchange resin, but the purpose of this treatment step is not to exchange anions, but rather to exchange NO3.
The main purpose is to remove acidic substances such as -. If it is not treated with a cation exchange resin after removing the acidic substance, the reactive groups of the cation exchange resin will be destroyed and it will deteriorate.
弱塩基性陰イオン交換樹脂及び陽イオン交換樹脂で順次
処理し、酸性物質及び陽イオンを除去した後に、再び弱
塩基性陰イオン交換樹脂で処理すると、樹脂周りがアル
カリ性にならないため、効率がよくなり、通水倍率が大
きくなる。最後に、強塩基性陰イオン樹脂で処理し、弱
塩基性陰イオン交換樹脂で除去できないシリカ成分等を
除去する。After sequentially treating with a weakly basic anion exchange resin and a cation exchange resin to remove acidic substances and cations, treating again with a weakly basic anion exchange resin is more efficient because the area around the resin does not become alkaline. This increases the water flow rate. Finally, it is treated with a strongly basic anion resin to remove silica components and the like that cannot be removed with a weakly basic anion exchange resin.
ユ」１阿
次に、実施例に基づいて本発明を詳述するが、本発明は
これに限定されるものではない。EXAMPLES Next, the present invention will be described in detail based on Examples, but the present invention is not limited thereto.
実施例１
弱塩基性陰イオン交換樹脂塔、強酸性陽イオン交換樹脂
塔、弱塩基性陰イオン交換樹脂塔及び強塩基性陰イオン
交換樹脂塔を順次連結した処理装置を準備し、ｐＨ３、
電導塵５００ Ｉ！ｓ／ａｎｓ Ｎ ０３５０ｍｇ／Ａ
、Ｎ Ｈａ ５０ ｍｇ／ ｌ−及び５ｉ０３ ３０ｍ
ｇ／ｌの原水を処理する。Example 1 A processing device in which a weakly basic anion exchange resin tower, a strongly acidic cation exchange resin tower, a weakly basic anion exchange resin tower, and a strong basic anion exchange resin tower were sequentially connected was prepared, and
Conductive dust 500 I! s/ans N 0350mg/A
, N Ha 50 mg/l- and 5i03 30 m
g/l of raw water is treated.
４％水酸化ナトリウム水溶液で再生した弱塩基性陰イオ
ン交換樹脂を充填した塔に前記の原水を５Ｖ＝３０ｈ−
１で通水して処理し、次に、５％塩酸で再生した強酸性
陽イオン交換樹脂に５Ｖ＝＝３０ｈ−１で通水し、再び
４％水酸化ナトリウム水溶液で再生した弱塩基性陰イオ
ン交換樹脂に通水し、最後に４％水酸化ナトリウム水溶
液で再生した強塩基性陰イオン交換樹脂に５Ｖ＝３０ｈ
−１で通水したところ、通水時間４００分まで処理水の
電導塵は０．１μａ ／ ｃｍ以下であった。この実験
における処理水のｐＨ及び電導塵の経時変化を第１図に
示す。The above raw water was heated at 5V=30h- to a column filled with a weakly basic anion exchange resin regenerated with a 4% aqueous sodium hydroxide solution.
1, and then passed water through a strongly acidic cation exchange resin regenerated with 5% hydrochloric acid at 5V = = 30h-1, and then treated with a weakly basic anion exchange resin regenerated with a 4% aqueous sodium hydroxide solution. Water was passed through the ion exchange resin, and finally the strongly basic anion exchange resin was regenerated with a 4% sodium hydroxide aqueous solution at 5 V = 30 h.
-1, the conductive dust in the treated water was 0.1 μa/cm or less until the water flow time was 400 minutes. Figure 1 shows the changes over time in the pH and conductive dust of the treated water in this experiment.
比較例
強酸性陽イオン交換樹脂塔の後の弱塩基性陰イオン交換
樹脂塔を省いた以外は実施例１と同じ装置及び操作を用
いて、同じ原水を処理し、処理水のｐＨ及び電導塵の経
時変化を第２図に示す。Comparative Example The same raw water was treated using the same equipment and operation as in Example 1, except that the weakly basic anion exchange resin column after the strongly acidic cation exchange resin column was omitted, and the pH and conductive dust of the treated water were Figure 2 shows the change over time.
この方法では、通水時間１００分以後にｐＨが上昇し、
電導塵も高くなった。In this method, the pH increases after 100 minutes of water flow,
Conductive dust levels also rose.
光器■立且
本発明によれば、イオン交換樹脂の特質を有効に利用で
き、従来法より長時間の通水が可能となり、かつランニ
ングコストの低減が可能となる。According to the present invention, the characteristics of ion exchange resin can be effectively utilized, water can be passed for a longer time than conventional methods, and running costs can be reduced.
第１図は本発明の実施例における処理水のｐｌ＋及び電
導塵の経時変化図、第２図は従来法を示す比較例におけ
る処理水のｐＨ及び電導塵の経時変化図である。FIG. 1 is a diagram showing changes over time in PL+ and conductive dust in treated water in an example of the present invention, and FIG. 2 is a diagram showing changes over time in pH and conductive dust in treated water in a comparative example showing a conventional method.
Claims (1)
性陰イオン交換樹脂を用いて処理し、次に、強酸性陽イ
オン交換樹脂、弱塩基性陰イオン交換樹脂及び強塩基性
陰イオン交換樹脂をこの順序で用いて処理することを特
徴とする廃水の処理方法。In order to treat acidic wastewater containing cations, it is first treated with a weakly basic anion exchange resin, then a strongly acidic cation exchange resin, a weakly basic anion exchange resin and a strong basic anion exchange resin. A wastewater treatment method characterized by treating the wastewater using resins in this order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3228686A JPS62191096A (en) | 1986-02-17 | 1986-02-17 | Waste water treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3228686A JPS62191096A (en) | 1986-02-17 | 1986-02-17 | Waste water treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62191096A true JPS62191096A (en) | 1987-08-21 |
| JPH0421556B2 JPH0421556B2 (en) | 1992-04-10 |
Family
ID=12354718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3228686A Granted JPS62191096A (en) | 1986-02-17 | 1986-02-17 | Waste water treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62191096A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019118891A (en) * | 2018-01-09 | 2019-07-22 | 栗田工業株式会社 | Pure water producing apparatus and pure water producing method |
-
1986
- 1986-02-17 JP JP3228686A patent/JPS62191096A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019118891A (en) * | 2018-01-09 | 2019-07-22 | 栗田工業株式会社 | Pure water producing apparatus and pure water producing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0421556B2 (en) | 1992-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |