JPH03108696A - Method and device for liquid radioactive waste treatment - Google Patents
Method and device for liquid radioactive waste treatmentInfo
- Publication number
- JPH03108696A JPH03108696A JP24514689A JP24514689A JPH03108696A JP H03108696 A JPH03108696 A JP H03108696A JP 24514689 A JP24514689 A JP 24514689A JP 24514689 A JP24514689 A JP 24514689A JP H03108696 A JPH03108696 A JP H03108696A
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- flowing
- activated carbon
- liquid
- filled
- 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
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000010857 liquid radioactive waste Substances 0.000 title abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 239000002699 waste material Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002901 radioactive waste Substances 0.000 claims description 12
- 238000005406 washing Methods 0.000 abstract description 7
- 238000011001 backwashing Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 239000010808 liquid waste Substances 0.000 abstract 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 239000003599 detergent Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、原子力施設より発生する放射性廃液の処理方
法およびそれに使用する装置に関し、特に衣服の洗濯水
、手洗い、シャワー等の放射能濃度の極めて低い廃液に
適した処理方法および処理装置に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a method for treating radioactive waste fluid generated from nuclear facilities and an apparatus used therefor, and in particular to washing water for clothes, hand washing, showering, etc. The present invention relates to a treatment method and a treatment device suitable for waste liquid having an extremely low radioactivity concentration.
（従来の技術）
原子力施設、特に原子力発電所では、作業員の使用した
衣服の洗濯水や、手洗い、シャワー等の廃水が発生する
。このような廃水の特徴は、放射能濃度が極めて低く、
洗剤成分や、糸屑、髪の毛、垢等の不溶解成分が含まれ
ていることである。これらの廃液を処理する場合、現在
はストレーナ−等により糸屑等の大きなごみを除去した
後、放射能を測定し、規定濃度以下の放射能であること
を確認して環境に放出している。(Prior Art) Nuclear facilities, especially nuclear power plants, generate wastewater such as water used by workers for washing clothes, washing hands, and showering. The characteristics of such wastewater are that the radioactivity concentration is extremely low.
Contains detergent ingredients and insoluble ingredients such as lint, hair, and dirt. Currently, when processing these waste liquids, large debris such as lint is removed using a strainer, etc., and then the radioactivity is measured and the radioactivity is confirmed to be below the specified concentration before being released into the environment. .
しかしながら、この方法では、廃液中の洗剤や垢等の各
種有機成分がそのまま放出されるので、環境保全上好ま
しくない。However, in this method, various organic components such as detergent and grime in the waste liquid are released as they are, which is not preferable from an environmental conservation perspective.
（発明が解決しようとする課題）
そこで、廃水中に含まれる溶解性物質と不溶解性物質と
を活性炭により一度に除去することを試みた。ところが
、活性炭には、粒径が３ｍｍから１０１程度のものまで
あり、粒径の大きなものでは吸着性能が低いので、洗剤
等の溶解性物質が除去し難く、一方位径の小さなもので
は吸着性能は高いが目詰まりを起こして処理能力が低下
し、頻繁に逆洗操作を行わなければならない。(Problems to be Solved by the Invention) Therefore, an attempt was made to remove soluble and insoluble substances contained in wastewater at once using activated carbon. However, activated carbon has particle sizes ranging from 3 mm to about 101 mm, and those with large particle sizes have low adsorption performance, making it difficult to remove soluble substances such as detergents, and those with small diameters have poor adsorption performance. Although the efficiency is high, it can become clogged, reducing processing capacity and requiring frequent backwashing operations.
本発明はかかる状況に対処してなされたもので、低放射
性濃度の放射性廃液から溶解性物質と不溶解性物質を効
率的に除去することを目的とするものである。The present invention was made in response to such a situation, and an object of the present invention is to efficiently remove soluble and insoluble substances from a radioactive waste liquid with a low radioactive concentration.
［発明の構成］
（課題を解決するための手段）
すなわち本発明は、放射性廃液を活性炭充填容器内に通
水し、通水圧力が上昇したときに該廃液の容器内への流
入位置を順次低くして通水を続けることを特徴とする放
射性廃液の処理方法に関し、さらにこの処理方法に使用
するための装置、すなわち、廃液流入口および処理液出
口を備え、内部に活性炭が充填されている容器からなり
、上記廃液流入口は容器の上部から下部にかけて複数個
設けられており、処理液出口に接続する管に圧力計が設
置されているいることを特徴とする放射性廃液処理装置
に関する。[Structure of the Invention] (Means for Solving the Problems) That is, the present invention involves passing radioactive waste liquid into an activated carbon-filled container, and sequentially adjusting the inflow position of the waste liquid into the container when the water flow pressure increases. Regarding a radioactive waste liquid treatment method characterized by continuing water flow at a low temperature, the apparatus is further equipped with a device for use in this treatment method, that is, a waste liquid inlet and a treated liquid outlet, and the interior thereof is filled with activated carbon. The present invention relates to a radioactive waste liquid processing apparatus comprising a container, wherein a plurality of waste liquid inlets are provided from the upper part to the lower part of the container, and a pressure gauge is installed in a pipe connected to the treated liquid outlet.
（作用）
放射性廃液を活性炭で処理する時に生ずる目詰まり現象
を詳細に検討した結果、活性炭充填層の上部、すなわち
全容積のｌＯ％程度の所で目詰りを起こしていることが
明らかになった。(Function) As a result of a detailed study of the clogging phenomenon that occurs when radioactive waste liquid is treated with activated carbon, it was revealed that clogging occurred at the top of the activated carbon packed bed, that is, at about 10% of the total volume. .
本発明はこの事実に着目してなされたもので、廃液を活
性炭充填層に通水して目詰りを生じたとき、すなわち通
水圧力が上昇したときに、この充填層の上部目詰り部分
への通水を避け、その下の部分から廃液を流すようにす
る。次ぎに目詰りを起こしたときには、またその上位部
分を避け、流入位置をさらに下げて通水を続ける。この
ようなことを繰り返すことによって、逆洗までの時間、
すなわち逆洗までの処理量を増加することができる。The present invention was made with attention to this fact, and when the waste liquid is passed through the activated carbon packed bed and clogging occurs, that is, when the water passing pressure increases, it is Avoid water flowing through the area, and drain waste liquid from the area below it. The next time a blockage occurs, avoid the upper part and lower the inflow position further to continue water flow. By repeating this process, the time until backwashing can be reduced.
In other words, the amount of processing up to backwashing can be increased.
また、本発明の装置では、上記の処理に適するように廃
液流入口を上部から下部へ数箇所設けており、また通水
圧力を計測するために処理液排出口に圧力計を設けて通
水圧力が上昇（７たときに廃液流入位置の切り替えが容
易に行われるようにしである。In addition, in the apparatus of the present invention, several waste liquid inlets are provided from the top to the bottom so as to be suitable for the above treatment, and a pressure gauge is provided at the treated liquid outlet to measure the water flow pressure. This is so that the waste liquid inlet position can be easily switched when the pressure rises (7).
（実施例） 本発明の実施例を図面を参照して説明する。(Example) Embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の放射性廃液の処理方法の一実施例を示
す系統図である。第１図において、１は給液タンク、２
は供給ポンプ、３は活性炭充填容器、４は活性炭、５は
圧力計、６は逆洗タンク。FIG. 1 is a system diagram showing an embodiment of the radioactive waste liquid treatment method of the present invention. In Figure 1, 1 is a liquid supply tank, 2
is a supply pump, 3 is an activated carbon filling container, 4 is activated carbon, 5 is a pressure gauge, and 6 is a backwash tank.
７は圧縮空気、８は逆洗受はタンクである。7 is compressed air, and 8 is a tank for backwashing.
第２図は活性炭充填容器３の縦断面図である。FIG. 2 is a longitudinal sectional view of the activated carbon filling container 3.
これは円筒状の容器に活性炭４が充填されて構成されて
おり、該容器には廃液流入口が上部から下部にかけてａ
、 ｂ、 ｃ、 ｄ、 ｅと５個設置されてい
る。９は処理液出口、１０は活性炭導入口である。This consists of a cylindrical container filled with activated carbon 4, and the container has a waste liquid inlet from the top to the bottom.
, b, c, d, and e are installed. 9 is a processing liquid outlet, and 10 is an activated carbon inlet.
上記装置を使用して、模擬廃液の浄化処理を行った。模
擬廃液は下記第１表に示す組成のものである。A simulated waste liquid was purified using the above device. The simulated waste liquid had the composition shown in Table 1 below.
第 １ 表
まず、模擬廃液を給液タンク１に供給し、ポンプ２を作
動させて活性炭充填容器３に模擬廃液をＡよりｖ１バル
ブを開にして流入口ａより供給した。充填された活性炭
は第２表に示す性状のものである。Table 1 First, the simulated waste liquid was supplied to the liquid supply tank 1, the pump 2 was operated, and the simulated waste liquid was supplied from A to the activated carbon-filled container 3 through the inlet port a by opening the v1 valve. The filled activated carbon has properties shown in Table 2.
第 ２ 表
（以下 余白）
活性炭充填容器３の出口に設置した圧力計５で圧力を測
定した。圧力が最初の圧力の２倍に達した時点で、ポン
プ２を停止し、弁■１を閉じて、供液を停止した。次ぎ
に弁■２を開にして廃液を流入口すより供給した。前回
と同様にして圧力計５で廃液を供給し始めたときの圧力
の２倍に達するまで廃液を供給した。同様にして、流入
口Ｃ９ｄ、 ｅより廃液を供給して通水を続けた。Table 2 (hereinafter referred to as blank space) Pressure was measured with a pressure gauge 5 installed at the outlet of the activated carbon filling container 3. When the pressure reached twice the initial pressure, pump 2 was stopped, valve 1 was closed, and the supply of liquid was stopped. Next, valve 2 was opened and waste liquid was supplied from the inlet. In the same manner as the previous time, the waste liquid was supplied until the pressure reached twice the pressure when the waste liquid was started to be supplied using the pressure gauge 5. In the same manner, waste liquid was supplied from inlets C9d and C9e, and water flow continued.
結果を第３表に示す。The results are shown in Table 3.
第 ３ 表
この表から明らかなように、処理ｆｆ１５０ｍ３（処理
時間２５０時間）で活性炭充填容器３の出口でのＣＯＤ
値は４０ｐｐｍに達し、この時点で過酸化水素により活
性炭の再生を行ったところ、処理液のＣＯＤ濃度は３ｐ
ｐｍになり、活性炭の吸着能がほぼ完全に回復したこと
を示している。Table 3 As is clear from this table, the COD at the outlet of the activated carbon filled container 3 after treatment ff150m3 (treatment time 250 hours)
The value reached 40 ppm, and at this point the activated carbon was regenerated with hydrogen peroxide, and the COD concentration in the treated solution was 3 ppm.
pm, indicating that the adsorption capacity of activated carbon has almost completely recovered.
したがって、活性炭を交換することなく再び廃液処理を
行うことができる。また、活性炭の再生を充填容器内で
行うために活性炭の抜き出し等の手間が省けた。Therefore, waste liquid treatment can be performed again without replacing the activated carbon. Furthermore, since the activated carbon is regenerated within the filled container, the effort of extracting the activated carbon can be saved.
［発明の効果］
本発明によれば、原子力施設で発生する衣服の洗濯水、
手洗い、シャワー等の放射能濃度の極めて低い廃液中の
溶解性物質および不溶解性物質を容易に除去することが
でき、しかも放射性廃棄物を発生させないという効果が
ある。[Effect of the invention] According to the present invention, washing water for clothes generated at a nuclear facility,
It is possible to easily remove soluble and insoluble substances from waste liquids from hand washing, showers, etc. that have extremely low radioactivity concentrations, and has the effect of not generating radioactive waste.
第１−図は本発明の放射性廃液の処理方法の一実施例に
使用される装置の説明図、第２図は第１図における活性
炭充填容器の断面図である。
１・・・給液タンク
２・・・供給ポンプ
３・・・活性炭充填容器
４・・・活性炭
５・・・圧力計
６・・・過酸化水素供給タンク
７・・・ポンプ
８・・・使用済み過酸化水素受はタンク９・・・処理液
出口
１０・・・活性炭導入口FIG. 1 is an explanatory diagram of an apparatus used in an embodiment of the radioactive waste liquid treatment method of the present invention, and FIG. 2 is a sectional view of the activated carbon-filled container in FIG. 1. 1... Liquid supply tank 2... Supply pump 3... Activated carbon filling container 4... Activated carbon 5... Pressure gauge 6... Hydrogen peroxide supply tank 7... Pump 8... Use The finished hydrogen peroxide receiver is tank 9...processed liquid outlet 10...activated carbon inlet
Claims (2)
力が上昇したときに該廃液の容器内への流入位置を順次
低くして通水を続けることを特徴とする放射性廃液の処
理方法。(1) Treatment of radioactive waste liquid characterized by passing the radioactive waste liquid into a container filled with activated carbon, and when the water flow pressure increases, the inflow position of the waste liquid into the container is successively lowered and the water flow is continued. Method.
炭が充填されている容器からなり、上記廃液流入口は容
器の上部から下部にかけて複数個設けられており、処理
液出口に接続する管に圧力計が設置されていることを特
徴とする放射性廃液処理装置。(2) It consists of a container that is equipped with a waste liquid inlet and a treated liquid outlet and is filled with activated carbon, and the waste liquid inlet is provided in multiple numbers from the top to the bottom of the container, and a pipe that connects to the treated liquid outlet A radioactive waste liquid treatment device characterized by having a pressure gauge installed at the top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24514689A JPH03108696A (en) | 1989-09-22 | 1989-09-22 | Method and device for liquid radioactive waste treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24514689A JPH03108696A (en) | 1989-09-22 | 1989-09-22 | Method and device for liquid radioactive waste treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03108696A true JPH03108696A (en) | 1991-05-08 |
Family
ID=17129306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24514689A Pending JPH03108696A (en) | 1989-09-22 | 1989-09-22 | Method and device for liquid radioactive waste treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03108696A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016065788A (en) * | 2014-09-24 | 2016-04-28 | 株式会社神戸製鋼所 | Adsorption tower for contaminated water treatment, and contaminated water treatment method |
-
1989
- 1989-09-22 JP JP24514689A patent/JPH03108696A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016065788A (en) * | 2014-09-24 | 2016-04-28 | 株式会社神戸製鋼所 | Adsorption tower for contaminated water treatment, and contaminated water treatment method |
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