JPH0339743B2 - - Google Patents
Info
- Publication number
- JPH0339743B2 JPH0339743B2 JP57129414A JP12941482A JPH0339743B2 JP H0339743 B2 JPH0339743 B2 JP H0339743B2 JP 57129414 A JP57129414 A JP 57129414A JP 12941482 A JP12941482 A JP 12941482A JP H0339743 B2 JPH0339743 B2 JP H0339743B2
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- exchange resin
- regeneration
- tower
- high conductivity
- 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
- 239000002699 waste material Substances 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 26
- 230000008929 regeneration Effects 0.000 claims description 24
- 238000011069 regeneration method Methods 0.000 claims description 24
- 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 description 19
- 239000011347 resin Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 239000003729 cation exchange resin Substances 0.000 claims description 11
- 239000003957 anion exchange resin Substances 0.000 claims description 10
- 239000003456 ion exchange resin Substances 0.000 claims description 9
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000001172 regenerating effect Effects 0.000 claims description 6
- 238000005115 demineralization Methods 0.000 claims description 5
- 230000002328 demineralizing effect Effects 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000003814 drug Substances 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012492 regenerant Substances 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
Description
本発明はイオン交換樹脂の洗浄再生工程中にお
ける廃液、とくに高導電率の廃液を低減する方法
に関するものである。
原子力発電所の復水脱塩方法において、イオン
交換樹脂の洗浄再生工程中に再生廃液が当然発生
する。例えば現行廃液発生量（１塔当りの概算）
は逆洗／再洗使用水（Make−up Water
Condensate、以下MUWCと云う）として約130
m3／サイクル、再生廃液発生量は低導電率廃液
（Low Conductivity Waste以下LCWと言う）が
約100m3／サイクル、高導電率廃液（High
Conductivity Waste以下HCWと言う）は約40
m3／サイクル発生するのが通例である。
但し以上の発生量は逆洗頻度３回／サイクルの
通薬再生時の最大量を示す。
本発明は必要使用水（MUWC）の節減ととも
に発生する、HCWの回収、再利用を目的とする
ものである。原子力発電所においては汚染イオン
交換樹脂の再生には通常脱塩塔内の樹脂を再生装
置に移送するためには水と空気を用いることが必
要で、また再生装置における樹脂の移送および再
生操作において多量の水と空気が使用される。こ
れらの樹脂の移送および再生操作において使用さ
れた空気および水はすべて廃気又は廃水として排
出され、それは原子力発電所における微量ではあ
るが放射能をおびた廃棄物処理の負荷となり、該
廃液処理は重大なことであり、廃液の発生を低減
することが必要である。
以下図面にしたがつて本発明を説明する。第１
図は本発明による廃液とくにHCWを工程に利用
して、HCWの廃棄を低減するイオン交換樹脂再
生装置の工程説明図である。１は脱塩塔であり、
３０はフイルターである、樹脂貯槽５の下部の配
管６を通じて再生済の樹脂が移送され脱塩塔の上
部より流れ込む。空気７を送り配管９より樹脂が
移送される。８はスルーシング水である。廃液は
配管１０より廃液槽２に送り込まれる。一部は廃
棄する。配管９より移送された樹脂（陽イオン交
換樹脂ならびに陰イオン交換樹脂）は陽イオン交
換樹脂再生塔の上部に送りこまれる。ここでエア
ースクラビング、逆洗を繰返し比重のちがいを利
用して陽イオン交換樹脂と陰イオン交換樹脂の二
層にわけ、陰イオン交換樹脂は抜出し管１４を通
じて配管１８により陰イオン交換樹脂再生塔の上
部に送り込まれる。次に陽イオン交換樹脂再生塔
では再生剤として８％H2SO4を２８より導入し
て使用し、再生剤の陽イオン交換樹脂は下方より
配管１９を通じて樹脂貯槽５の上部に入る。
ついで陰イオン交換樹脂再生塔に於いては再生
剤として４％NaOHが２９より導入使用されて
陰イオン交換樹脂が再生され、配管２４を通じて
樹脂貯槽５の上部に入る。
陽イオン交換樹脂槽３、陰イオン交換樹脂槽４
にはそれぞれ抜出し管１２，１３，１４，２０，
２１，２２及び分散管１５，２３を具備してい
て、オーバーフローしたものは１２及び２０より
排出される。又各槽にはそれぞれ空気、逆洗水、
スルーシング水ならびに洗浄水を入れる配管をそ
なえている。樹脂貯槽５において２５，２６は抜
出管であり、２７は分散管である。この貯槽５に
おいても又空気、逆洗水、スルーシング水が下部
より、洗浄水が上部より導入されるように具備さ
れている。又各槽共に排出管を設ける。
さてHCW廃液槽３２，３３に貯蔵されたイオ
ン交換樹脂洗浄移送工程時の高導電率の廃液はそ
れぞれ配管３６，３９を通して陽イオン交換樹脂
再生塔３の下部および陰イオン交換樹脂再生塔４
の下部より、それぞれ導入され樹脂再生用として
利用される。さらにHCW廃液の用途としては、
薬液稀釈水としても使用出来る。
以下従来行なわれている樹脂（陽イオンならび
に陰イオン交換樹脂）の再生時の廃液発生量と本
発明の方法による廃液発生量について比較実験例
を表示する。
The present invention relates to a method for reducing waste liquid, particularly high conductivity waste liquid, during the cleaning and regeneration process of ion exchange resins. In the condensate desalination method of nuclear power plants, recycled waste liquid is naturally generated during the cleaning and regeneration process of ion exchange resin. For example, the current amount of waste liquid generated (approximately per tower)
is backwash/rewash water (Make-up Water
Approximately 130 as Condensate (hereinafter referred to as MUWC)
m 3 /cycle, the amount of regenerated waste liquid generated is approximately 100 m 3 /cycle of low conductivity waste (LCW), and approximately 100 m 3 /cycle of recycled waste liquid (LCW),
Conductivity Waste (HCW) is approximately 40
Typically m 3 /cycle occurs. However, the amount generated above indicates the maximum amount during drug regeneration with a backwash frequency of 3 times/cycle. The purpose of the present invention is to recover and reuse HCW, which is generated along with saving necessary water usage (MUWC). In nuclear power plants, the regeneration of contaminated ion exchange resin usually requires the use of water and air to transfer the resin in the demineralization tower to the regenerator, and also requires the use of water and air in the resin transfer and regeneration operations in the regenerator. Large amounts of water and air are used. All the air and water used in these resin transfer and regeneration operations are discharged as waste air or waste water, which burdens the nuclear power plant's radioactive waste treatment, although it is a small amount. This is critical and it is necessary to reduce the generation of waste fluids. The present invention will be explained below with reference to the drawings. 1st
The figure is a process explanatory diagram of an ion exchange resin regenerating apparatus according to the present invention that utilizes waste liquid, particularly HCW, in the process to reduce waste of HCW. 1 is a desalination tower;
30 is a filter, and the recycled resin is transferred through a pipe 6 at the bottom of the resin storage tank 5 and flows from the top of the demineralization tower. Air 7 is sent and resin is transferred from piping 9. 8 is sluicing water. The waste liquid is sent to the waste liquid tank 2 through the pipe 10. Some will be discarded. The resins (cation exchange resin and anion exchange resin) transferred through the pipe 9 are sent to the upper part of the cation exchange resin regeneration tower. Here, air scrubbing and backwashing are repeated to separate the cation exchange resin and anion exchange resin into two layers by taking advantage of the difference in specific gravity. sent to the top. Next, in the cation exchange resin regeneration tower, 8% H 2 SO 4 is introduced from 28 as a regenerant and used, and the cation exchange resin as the regenerant enters the upper part of the resin storage tank 5 from below through the pipe 19. Next, in the anion exchange resin regeneration tower, 4% NaOH is introduced and used as a regenerating agent through 29 to regenerate the anion exchange resin, and enters the upper part of the resin storage tank 5 through the pipe 24. Cation exchange resin tank 3, anion exchange resin tank 4
have extraction pipes 12, 13, 14, 20, respectively.
21, 22 and dispersion pipes 15, 23, overflow is discharged from 12 and 20. In addition, each tank is equipped with air, backwash water,
It is equipped with piping for sluicing water and washing water. In the resin storage tank 5, 25 and 26 are extraction pipes, and 27 is a dispersion pipe. This storage tank 5 is also provided so that air, backwash water, and sluicing water are introduced from the bottom, and wash water is introduced from the top. Also, each tank will have a discharge pipe. Now, the high conductivity waste liquid from the ion exchange resin cleaning transfer process stored in the HCW waste liquid tanks 32 and 33 is passed through the pipes 36 and 39 to the lower part of the cation exchange resin regeneration tower 3 and to the anion exchange resin regeneration tower 4.
They are introduced from the bottom of the tube and used for resin regeneration. Furthermore, the uses of HCW waste liquid include:
It can also be used as water for diluting drug solutions. Examples of comparative experiments will be shown below regarding the amount of waste liquid generated during conventional regeneration of resins (cation and anion exchange resins) and the amount of waste liquid generated by the method of the present invention.
【表】【table】
【表】【table】
【表】【table】
【表】
パートの回収量を示す。
以上の結果より、本発明のHCWの回収は
(1) 陽イオン交換樹脂の通薬再生時において急速
洗浄／移送工程時のHCWの回収 約18.5m3
(2) 陰イオン交換樹脂の通薬再生時において急速
洗浄／移送工程時のHCWの回収 約8.3m3
合計 HCWの回収 約26.8m3
である。以上の実険による結果のごとくHCWの
低減は、従来約40m3／サイクルが約30m3／サイク
ルとなり、発生量は従来の75％に低減されるとい
う好成績を得ることが出きた。[Table] Shows the amount of parts recovered.
From the above results, the recovery of HCW according to the present invention is as follows: (1) Recovery of HCW during the rapid cleaning/transfer process during the regeneration of the cation exchange resin by passing the drug through approximately 18.5 m 3 (2) Regeneration of the anion exchange resin through the flow of the drug HCW recovery during the rapid cleaning/transfer process is approximately 8.3 m 3 Total HCW recovery is approximately 26.8 m 3 . As a result of the above practical tests, we were able to achieve good results in reducing HCW from the conventional approximately 40 m 3 /cycle to approximately 30 m 3 /cycle, and the amount generated was reduced to 75% of the conventional level.
第１図は廃液を工程に利用する本発明のイオン
交換樹脂再生装置の工程説明図である。
１……脱塩塔、２……廃液槽、３……陽イオン
交換樹脂再生塔、４……陰イオン交換樹脂再生
塔、５……樹脂貯槽、６……再生済樹脂移送管、
９……再生前樹脂移送管、１０，１１，３１……
廃液移送管、３２，３３……廃液槽（HCW）、
３４，３５，３６……配管、３７，３８，３９…
…配管。
FIG. 1 is a process explanatory diagram of an ion exchange resin regenerating apparatus of the present invention that utilizes waste liquid in the process. 1...Demineralization tower, 2...Waste liquid tank, 3...Cation exchange resin regeneration tower, 4...Anion exchange resin regeneration tower, 5...Resin storage tank, 6...Regenerated resin transfer pipe,
9... Resin transfer pipe before regeneration, 10, 11, 31...
Waste liquid transfer pipe, 32, 33... Waste liquid tank (HCW),
34, 35, 36... Piping, 37, 38, 39...
…Piping.
Claims (1)
塔、陽イオン交換樹脂再生塔、陰イオン交換樹脂
再生塔、該両再生塔にそれぞれ附設された高導電
率廃液槽および樹脂貯槽からなり、復水脱塩塔に
連結されたイオン交換樹脂再生装置により汚染イ
オン交換樹脂を再生洗浄する工程において、該両
樹脂再生塔にそれぞれ附設された高導電率廃液槽
にイオン交換樹脂の洗浄移送工程時の高導電率の
廃液を回収貯蔵せしめ、該廃液をイオン交換樹脂
の再生に使用することを特徴とする、イオン交換
樹脂再生時の高導電率廃液低減法。 ２ 高導電率廃液槽に貯蔵された高導電率廃液を
両イオン交換樹脂の再生に使用することを特徴と
する特許請求の範囲第１項記載の廃液低減法。[Scope of Claims] 1. A condensate demineralization tower, a cation exchange resin regeneration tower, an anion exchange resin regeneration tower, and a high conductivity waste liquid attached to both regeneration towers, which are connected by piping equipped with appropriate valves. In the process of regenerating and cleaning contaminated ion-exchange resin using an ion-exchange resin regeneration device that consists of a tank and a resin storage tank and is connected to a condensate demineralization tower, ions are transferred to high-conductivity waste liquid tanks attached to both resin regeneration towers. 1. A method for reducing high conductivity waste liquid during ion exchange resin regeneration, comprising collecting and storing high conductivity waste liquid during the cleaning and transfer process of the exchange resin, and using the waste liquid for regenerating the ion exchange resin. 2. The waste liquid reduction method according to claim 1, characterized in that the high conductivity waste liquid stored in the high conductivity waste liquid tank is used for regenerating both ion exchange resins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57129414A JPS5919550A (en) | 1982-07-23 | 1982-07-23 | Reduction of high-electric conductive liquid waste during regeneration of ion-exchange resin and apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57129414A JPS5919550A (en) | 1982-07-23 | 1982-07-23 | Reduction of high-electric conductive liquid waste during regeneration of ion-exchange resin and apparatus therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5919550A JPS5919550A (en) | 1984-02-01 |
| JPH0339743B2 true JPH0339743B2 (en) | 1991-06-14 |
Family
ID=15008940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57129414A Granted JPS5919550A (en) | 1982-07-23 | 1982-07-23 | Reduction of high-electric conductive liquid waste during regeneration of ion-exchange resin and apparatus therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5919550A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919549A (en) * | 1982-07-23 | 1984-02-01 | Ebara Corp | Reduction of low-electric conductive liquid waste during regeneration of ion-exchange resin and apparatus therefor |
| JPS5919551A (en) * | 1982-07-23 | 1984-02-01 | Ebara Corp | Retrenchment of regenerating agent during regeneration of ion-exchange resin, reduction of total solid part and apparatus therefor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50128683A (en) * | 1974-03-29 | 1975-10-09 | ||
| JPS5228487A (en) * | 1975-08-29 | 1977-03-03 | Dainippon Toryo Co Ltd | Regeneration method of ion exchange resin |
| JPS54127871A (en) * | 1978-03-28 | 1979-10-04 | Sumitomo Metal Ind Ltd | Recovery of chemicals used in regeneration in purified water manufacturing apparatus |
| JPS5794349A (en) * | 1980-12-02 | 1982-06-11 | Ebara Corp | Method and device for decreasing waste liquid at regeneration of ion exchange resin |
| JPS5919551A (en) * | 1982-07-23 | 1984-02-01 | Ebara Corp | Retrenchment of regenerating agent during regeneration of ion-exchange resin, reduction of total solid part and apparatus therefor |
| JPS5919549A (en) * | 1982-07-23 | 1984-02-01 | Ebara Corp | Reduction of low-electric conductive liquid waste during regeneration of ion-exchange resin and apparatus therefor |
-
1982
- 1982-07-23 JP JP57129414A patent/JPS5919550A/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50128683A (en) * | 1974-03-29 | 1975-10-09 | ||
| JPS5228487A (en) * | 1975-08-29 | 1977-03-03 | Dainippon Toryo Co Ltd | Regeneration method of ion exchange resin |
| JPS54127871A (en) * | 1978-03-28 | 1979-10-04 | Sumitomo Metal Ind Ltd | Recovery of chemicals used in regeneration in purified water manufacturing apparatus |
| JPS5794349A (en) * | 1980-12-02 | 1982-06-11 | Ebara Corp | Method and device for decreasing waste liquid at regeneration of ion exchange resin |
| JPS5919551A (en) * | 1982-07-23 | 1984-02-01 | Ebara Corp | Retrenchment of regenerating agent during regeneration of ion-exchange resin, reduction of total solid part and apparatus therefor |
| JPS5919549A (en) * | 1982-07-23 | 1984-02-01 | Ebara Corp | Reduction of low-electric conductive liquid waste during regeneration of ion-exchange resin and apparatus therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5919550A (en) | 1984-02-01 |
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