JPH11299844A - Medical waste liquid treating method, medical waste liquid treating agent and medical waste liquid treating container - Google Patents
Medical waste liquid treating method, medical waste liquid treating agent and medical waste liquid treating containerInfo
- Publication number
- JPH11299844A JPH11299844A JP10106043A JP10604398A JPH11299844A JP H11299844 A JPH11299844 A JP H11299844A JP 10106043 A JP10106043 A JP 10106043A JP 10604398 A JP10604398 A JP 10604398A JP H11299844 A JPH11299844 A JP H11299844A
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- medical waste
- chlorine
- water
- medical
- 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
Landscapes
- Apparatus For Disinfection Or Sterilisation (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、手術、出産、又は
分析等の医療行為により排出される医療廃液を安全に廃
棄処理するための医療廃液処理方法の改良に関し、か
つ、前記処理方法を実行可能な医療廃液処理剤及び医療
廃液処理容器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a medical waste liquid treatment method for safely disposing of medical waste liquid discharged by medical operations such as surgery, childbirth, or analysis, and to execute the treatment method. The present invention relates to a medical waste liquid treatment agent and a medical waste liquid treatment container.
【０００２】[0002]
【従来の技術】病院での手術や出産の際に排出される血
液や羊水又は検査後の尿や血液等のような液状の医療廃
液は、医療従事者や廃棄業者に対する感染症を防止する
ために、使い捨ての廃液容器に回収され、所定量溜まっ
た時点で医療用廃棄物業者に依頼して容器ごと焼却処理
されるか、又は、施設内で医療従事者等により適当な方
法で処理されていた。しかし、廃棄処理を医療用廃棄物
業者に依頼する場合には、業者が感染性の廃液を液状の
まま収容した廃液容器を廃棄場まで輸送しなければなら
ないので、万一の事故等により廃液容器が破損して廃液
が流出又は飛散して周囲の人間に感染する恐れがあると
いう問題があり、また、施設内で医療従事者等が廃液を
処理する場合にも処理中に廃液が飛散して感染する恐れ
があるという問題がある。上記したように、医療廃液を
液状のまま廃棄処理することは感染症の観点から見て非
常に危険であるため、これらを固形化した後、廃棄処理
することが望まれる。医療廃液を固形化する廃液処理剤
としては、吸水性が高く、一旦吸水した水は多少の圧力
を加えても離水しないという保水性を有する吸水性樹脂
から成る処理剤が特開平４−１２２２６３号公報及び特
開平６−２１６号公報で提案されている。2. Description of the Related Art Liquid medical effluent such as blood or amniotic fluid or urine or blood after examination discharged at the time of surgery or childbirth in hospitals is used to prevent infectious diseases for medical workers and waste disposal companies. The waste is collected in a disposable waste liquid container, and when the predetermined amount has been collected, it is incinerated with a medical waste disposal company and the container is incinerated, or is treated in a facility by a medical worker or the like by an appropriate method. Was. However, when requesting disposal of waste by a medical waste trader, the trader must transport the waste liquid container containing the infectious waste liquid in a liquid state to the disposal site. There is a problem that the liquid may be damaged and the waste liquid may flow out or scatter and infect surrounding people.In addition, even if the medical staff etc. treats the waste liquid in the facility, the waste liquid may scatter during the treatment. There is a problem that infection may occur. As described above, it is very dangerous from the viewpoint of infectious diseases to dispose of medical waste liquid in a liquid state. Therefore, it is desired to dispose of the medical waste liquid after solidifying it. As a waste liquid treatment agent for solidifying medical waste liquid, a treatment agent comprising a water-absorbing resin having a high water absorbency and having a water retention property such that once absorbed water does not separate even if some pressure is applied thereto is disclosed in JP-A-4-122263. And Japanese Patent Application Laid-Open No. 6-216.
【０００３】[0003]
【発明が解決しようとする課題】上記した吸水性樹脂
は、水と接触すると瞬時に吸水・膨潤して、水全体をゲ
ル状にする性質をもつ合成高分子であるので、医療廃液
をゲル状まで固形化することはできるが、固形化がゲル
状までしか達成できないため、固形化された医療廃液は
その表面が湿っている。従って、運搬中の収容容器の破
損等が原因で処理作業者が固形化した医療廃液の表面に
触れる可能性があることを考えると、前記した従来の医
療廃液処理剤では充分な安全性が確保できるとは言え
ず、改善の余地がある。また、医療廃液の中でも特に血
液等は、その色が処理作業者に視覚的な不安感を与え、
運搬作業や処理作業を行う作業者の精神的な負担を大き
くするという問題があり、また、このように精神的な負
担が大きくなると、作業中に通常では考えられない事故
を招く危険もあるという問題も生じる。本発明は、上記
した従来の医療廃液処理剤における問題点を解決し、処
理作業又は運搬作業中の作業者の充分な安全性を確保で
き、かつ、精神的な負担を軽減することのできる医療廃
液処理方法、医療廃液処理剤及び医療廃液処理容器を提
供することを目的としている。The above-mentioned water-absorbent resin is a synthetic polymer having the property of absorbing water and swelling instantly when it comes into contact with water and making the whole water into a gel. The solidified medical waste liquid has a wet surface because solidification can be achieved only up to the gel state. Therefore, considering that there is a possibility that the processing worker may touch the surface of the solidified medical waste liquid due to damage of the container during transportation, etc., sufficient safety is secured with the above-mentioned conventional medical waste liquid treating agent. We can't say that there is room for improvement. In addition, among medical waste liquids, especially blood and the like, the color of which gives the processing worker visual anxiety,
There is a problem of increasing the mental burden on the workers who carry and handle the work, and it is also said that such an increase in the mental burden may lead to accidents that are not normally considered during the work. Problems arise. The present invention solves the above-mentioned problems in the conventional medical waste liquid treatment agent, and can ensure sufficient safety of workers during treatment or transportation and can reduce mental burden. An object of the present invention is to provide a wastewater treatment method, a medical wastewater treatment agent, and a medical wastewater treatment container.
【０００４】[0004]
【課題を解決するための手段】上記した目的を達成する
ために、本発明に係る医療廃液処理方法は、医療用廃液
中に、塩素系殺菌剤、塩素還元剤、吸水性高分子を添加
し、前記塩素系殺菌剤で医療廃液中の細菌やウィルスを
殺菌し、前記塩素還元剤で塩素系殺菌剤の余剰な酸化力
を消費し、前記吸水性高分子で医療用廃液を吸水して固
形化することを特徴とするものである。好ましくは、こ
れら塩素系殺菌剤、塩素還元剤及び吸水性高分子は順に
添加されるか、又は少なくとも、前記塩素系殺菌剤の殺
菌速度及び塩素還元剤の余剰な酸化力の消費速度より、
医療廃液を吸水する速度が遅い吸水性高分子を用いて、
同時に添加され得る。また、有利には、前記吸水性高分
子を水崩壊性又は水溶解性材料で覆い、該吸水性高分子
の作用開始時間を、前記塩素系殺菌剤及び塩素還元剤の
作用開始時間より遅らせることにより、前記吸水性高分
子の吸水時間が遅くされ得る。また、本発明に係る医療
廃液処理剤は、医療廃液中の細菌やウィルスを殺菌する
塩素系殺菌剤と、前記塩素系殺菌剤の余剰な酸化力を消
費する塩素還元剤と、医療廃液を吸水して固形化する吸
水性高分子とを有し、好ましくは、前記吸水性高分子
は、その吸水速度が、前記塩素系殺菌剤の殺菌速度及び
塩素還元剤の消費速度より遅いものが選ばれるか、又は
水崩壊性又は水溶解性材料で覆われ得る。また、この場
合、前記塩素系殺菌剤は、例えば、ジクロロイソシアヌ
ール酸ナトリウム、次亜塩素ナトリウム、さらし粉又は
高度さらし粉から成り得、また、前記塩素還元剤は、例
えば、蛋白質又はチオ硫酸ナトリウムから成り得る。有
利には、前記医療廃液処理剤は、塩素系殺菌剤投入後の
医療廃液中のｐＨを、塩素ガスの発生を防止でき、か
つ、塩素ガスの発生を防止できる範囲で殺菌効果の高い
値に調整するためのｐＨ調整剤をさらに含むことがで
き、また、廃液中に含まれる電解質のイオン強度を低下
させ、前記吸水性高分子が持つ親水性基と電解質との結
合を防止する物質をさらに含むこともできる。好ましく
は、塩素系殺菌剤、塩素還元剤、及び吸水性高分子は、
少なくとも医療廃液中に投入後に、これら各成分を医療
廃液中へ放出可能な容器に収容され得、この場合、前記
容器は、少なくとも一部が水溶性材料又は水崩壊性材料
から成り得る。また、本発明に係る医療廃液処理容器
は、内部に医療廃液を収容でき、前記した医療廃液処理
剤を医療廃液中に放出可能に備えていることを特徴とす
るものである。In order to achieve the above object, a method for treating medical waste liquid according to the present invention comprises adding a chlorine-based disinfectant, a chlorine reducing agent, and a water-absorbing polymer to medical waste liquid. Disinfecting bacteria and viruses in medical wastewater with the chlorine-based disinfectant, consuming the excess oxidizing power of the chlorine-based disinfectant with the chlorine-reducing agent, absorbing the medical wastewater with the water-absorbing polymer, and solidifying It is characterized in that Preferably, these chlorine-based disinfectant, chlorine-reducing agent and water-absorbing polymer are added in order, or at least, from the disinfection rate of the chlorine-based disinfectant and the consumption rate of excess oxidizing power of the chlorine-reducing agent,
Using a water-absorbing polymer that absorbs medical waste fluid slowly,
It can be added at the same time. Also, advantageously, the water-absorbing polymer is covered with a water-disintegrable or water-soluble material, and the action start time of the water-absorbing polymer is delayed from the action start time of the chlorine-based disinfectant and chlorine reducing agent. Thereby, the water absorption time of the water absorbing polymer can be delayed. Further, the medical waste liquid treating agent according to the present invention is a chlorine-based disinfectant that disinfects bacteria and viruses in the medical waste liquid, a chlorine reducing agent that consumes excess oxidizing power of the chlorine-based disinfectant, and absorbs the medical waste liquid. And a water-absorbing polymer that is solidified by solidification. Preferably, the water-absorbing polymer is selected such that its water absorption rate is lower than the disinfection rate of the chlorine-based disinfectant and the consumption rate of the chlorine reducing agent. Or may be covered with a water-disintegrable or water-soluble material. Further, in this case, the chlorine-based germicide can be composed of, for example, sodium dichloroisocyanurate, sodium hypochlorite, bleached powder or highly bleached powder, and the chlorine reducing agent is composed of, for example, protein or sodium thiosulfate. obtain. Advantageously, the medical waste liquid treatment agent, the pH in the medical waste liquid after the chlorine-based disinfectant is added, to prevent the generation of chlorine gas, and to a high value of the sterilizing effect in the range that can prevent the generation of chlorine gas. It may further include a pH adjuster for adjusting, and further, a substance that lowers the ionic strength of the electrolyte contained in the waste liquid and prevents bonding between the hydrophilic group of the water-absorbing polymer and the electrolyte. Can also be included. Preferably, the chlorine-based disinfectant, the chlorine reducing agent, and the water-absorbing polymer are:
At least after introduction into the medical waste fluid, each of these components may be contained in a container capable of being released into the medical waste fluid, in which case the container may be at least partially composed of a water-soluble material or a water-disintegrable material. Further, the medical waste liquid treatment container according to the present invention is characterized in that the medical waste liquid treatment container can be accommodated therein, and the medical waste liquid treatment agent is provided so as to be able to be discharged into the medical waste liquid.
【０００５】[0005]
【発明の実施の形態】本発明に係る医療廃液処理方法及
び処理剤における吸水性樹脂は、その組成からデンプン
系、セルロース系及び合成高分子系の三種類に大別さ
れ、例えば、デンプン系としては、デンプン−アクリロ
ニトリルグラフト共重合体、デンプン−アクリル酸グラ
フト共重合体、デンプン−ビニルスルホン酸グラフト共
重合体、又はデンプン−スチレンスルホン酸グラフト共
重合体が挙げられ、セルロース系としては、セルロース
−アクリロニトリルグラフト共重合体、セルロース−ス
チレンスルホン酸グラフト共重合体、又はカルボキシメ
チルセルロース架橋重合体が挙げられる。また、合成高
分子系は、その組成からアクリル系、ポリビニルアルコ
ール系、ポリエチレンオキサイド系、ポリビニルピロリ
ドン系、その他に大別され、例えば、アクリル系として
は、ポリアクリロニトリル系重合体、又はポリアクリル
酸塩架橋重合体が挙げられ、ポリビニルアルコール系と
しては、ポリビニルアルコール架橋重合体、又はアクリ
ル−酢酸ビニル共重合体が挙げられ、ポリエチレンオキ
サイド系としては、ポリエチレングリコールジアクリレ
ート架橋重合体が挙げられ、ポリビニルピロリドン系と
しては、ポリビニルピロリドン系架橋重合体が挙げら
れ、また、上記した分類に属さないものとして、水酸
基、カルボキシル基、カルボン酸塩、又はスルホン酸基
等の構造を含む重合体が挙げられる。BEST MODE FOR CARRYING OUT THE INVENTION The water-absorbing resin in the medical waste liquid treatment method and treating agent according to the present invention is roughly classified into three types, starch-based, cellulose-based and synthetic polymer-based, based on their composition. Are starch-acrylonitrile graft copolymers, starch-acrylic acid graft copolymers, starch-vinyl sulfonic acid graft copolymers, or starch-styrene sulfonic acid graft copolymers.Examples of cellulose include cellulose- An acrylonitrile graft copolymer, a cellulose-styrene sulfonic acid graft copolymer, or a carboxymethylcellulose crosslinked polymer may be used. In addition, synthetic polymer systems are roughly classified into acrylic, polyvinyl alcohol, polyethylene oxide, polyvinylpyrrolidone, and others based on their compositions. For example, acrylic polymers include polyacrylonitrile polymers and polyacrylates. Crosslinked polymers include, as the polyvinyl alcohol type, a polyvinyl alcohol crosslinked polymer, or an acryl-vinyl acetate copolymer, and as the polyethylene oxide type, a polyethylene glycol diacrylate crosslinked polymer, and polyvinylpyrrolidone Examples of the system include a polyvinylpyrrolidone-based crosslinked polymer, and those that do not belong to the above classification include polymers having a structure such as a hydroxyl group, a carboxyl group, a carboxylate, or a sulfonic acid group.
【０００６】また、本発明に係る医療廃液処理方法及び
処理剤における塩素系殺菌剤としては、次亜塩素酸ナト
リウム、次亜塩素酸カルシウム（さらし粉の主成分）や
ジクロロイソシアヌール酸ナトリウム等が挙げられる。
この中でも、特に次亜塩素酸ナトリウムは、有効塩素濃
度１０００ｐｐｍの添加量で、他の細菌やウィルスに比
べて殺菌剤に対する耐性が非常に高いＨＢＶウィルスに
対しても有効であり、従って、その他の感染源となる細
菌やウィルスに対しても有効であるといえるので、殺菌
力の観点から見ると好ましい。また、ジクロロイソシア
ヌール酸ナトリウムは有機物存在下でも殺菌効果が高い
という効果を奏し、次亜塩素酸カルシウムは入手が容易
で安価であるという効果を有する。また、前記塩素系殺
菌剤は、使い勝手がよいため固形の殺菌剤が好ましい
が、勿論、液状のものでもよく、適用する医療廃液の種
類に応じて、適宜決められ得る。尚、上記した例では、
次亜塩素酸ナトリウム以外は全て固形の塩素系殺菌剤で
ある。[0006] Examples of the chlorine-based disinfectant in the medical waste liquid treatment method and treatment agent according to the present invention include sodium hypochlorite, calcium hypochlorite (a main component of bleaching powder), and sodium dichloroisocyanurate. Can be
Among them, sodium hypochlorite is particularly effective at an effective chlorine concentration of 1000 ppm with respect to the HBV virus, which has extremely high resistance to fungicides as compared with other bacteria and viruses. It is also effective from the viewpoint of bactericidal power because it can be said that it is also effective against bacteria and viruses that become infection sources. Also, sodium dichloroisocyanurate has an effect of having a high bactericidal effect even in the presence of an organic substance, and calcium hypochlorite has an effect of being easily available and inexpensive. The chlorine-based disinfectant is preferably a solid disinfectant because it is easy to use. However, it is needless to say that a liquid disinfectant may be used, and the disinfectant may be appropriately determined according to the type of medical waste liquid to be applied. In the above example,
Except for sodium hypochlorite, all are solid chlorine-based germicides.
【０００７】また、本発明に係る医療廃液処理方法及び
処理剤における塩素還元剤としては、蛋白質やチオ硫酸
ナトリウム等の無機還元剤が挙げられる。The chlorine reducing agent in the medical waste liquid treatment method and treatment agent according to the present invention includes proteins and inorganic reducing agents such as sodium thiosulfate.
【０００８】上記した、吸水性高分子、塩素系殺菌剤及
び塩素還元剤を順次或いは同時に医療廃液に添加され、
塩素系殺菌剤による廃液の殺菌、塩素還元剤による殺菌
剤の余剰な酸化力の消費、及び吸水性高分子による廃液
の吸収の反応が順次生じるようにされる。各処理剤を順
に添加する場合には、始めに塩素系殺菌剤を添加し、次
いで塩素還元剤を添加し、最後に吸水性高分子が添加さ
れ得る。また、各処理剤を同時に添加する場合には、塩
素系殺菌剤及び塩素系還元剤の反応速度より吸水速度の
遅い吸水性高分子を用いることにより、前記反応順が達
成され得る。吸水速度の遅い吸水性高分子としては、例
えば、住友精化製のアクアキープＳＡ６０Ｓ（商標）が
挙げられる。同社製のアクアキープ６０ＮｔｙｐｅII
（商標）や三菱化成製のアクアパールＺＳ４５（商標）
が、約２分又は２分３０秒で１ｇ当たり０．９％の濃度
の塩化ナトリウム溶液１００ｍｌを吸水するのに対し
て、このアクアキープＳＡ６０Ｓ（商標）は吸水速度が
遅いため、約５分の時間を必要とする。尚、これは、単
なる一例であり、吸水性高分子は、その吸水速度が、吸
水性高分子が医療廃液を完全に吸水固化してしまう前
に、塩素系殺菌剤及び塩素還元剤の殺菌及び消費反応が
終わるのに十分な遅さであれば任意のものでよく、この
条件を満たせる場合には、例えば、上記したアクアキー
プ６０ＮｔｙｐｅII（商標）やアクアパールＺＳ４５
（商標）を用いてもよい。またさらに、各処理剤を同時
に添加する場合には、吸水性高分子を水崩壊性又は水溶
解性材料で覆うことによっても、前記反応順は達成され
得る。上記した反応順により、塩素系殺菌剤の余剰酸化
力が吸水性樹脂を浸食する前に、塩素還元剤が余剰酸化
力を消費するので、吸水性樹脂により固化された廃液の
固化状態が塩素系殺菌剤の作用で経時低下することなは
く、また、吸水性樹脂が、塩素系殺菌剤で充分に殺菌さ
れた医療廃液を吸収することになるので、固化状態がゲ
ル状であっても感染の恐れが無くなる。さらに、塩素系
殺菌剤は、消臭及び脱色の効果もあるため、廃液中に血
球成分が混入している場合でも、その色は脱色されるの
で、作業者に視覚的な不安感を与えることがなくなる。[0008] The above-mentioned water-absorbing polymer, chlorine-based disinfectant and chlorine-reducing agent are sequentially or simultaneously added to medical wastewater,
Sterilization of the waste liquid by the chlorine-based disinfectant, consumption of the excess oxidizing power of the disinfectant by the chlorine reducing agent, and reaction of absorption of the waste liquid by the water-absorbing polymer are sequentially caused. When each treatment agent is added in order, a chlorine-based disinfectant may be added first, then a chlorine reducing agent may be added, and finally, a water-absorbing polymer may be added. When each treating agent is added at the same time, the above-described reaction order can be achieved by using a water-absorbing polymer having a lower water absorption rate than the reaction rate of the chlorine-based disinfectant and the chlorine-based reducing agent. Examples of the water-absorbing polymer having a low water-absorbing speed include Aquakeep SA60S (trademark) manufactured by Sumitomo Seika. Aqua Keep 60Ntype II made by the company
(Trademark) and Aqua Pearl ZS45 (trademark) manufactured by Mitsubishi Kasei
Absorbs 100 ml of a 0.9% sodium chloride solution per gram in about 2 minutes or 2 minutes and 30 seconds, whereas Aquakeep SA60S ™ has a low water absorption rate, so that it takes about 5 minutes. Needs time. Note that this is only an example, and the water-absorbing polymer has a water absorption rate before the water-absorbing polymer completely absorbs and solidifies the medical waste liquid. Any condition may be used as long as the reaction is slow enough to end the consumption reaction. If this condition can be satisfied, for example, the above-described Aqua Keep 60Ntype II (trademark) or Aqua Pearl ZS45
(Trademark) may be used. Furthermore, when each treating agent is added simultaneously, the above-described reaction order can be achieved by covering the water-absorbing polymer with a water-disintegrable or water-soluble material. Before the excess oxidizing power of the chlorine-based germicide erodes the water-absorbent resin, the chlorine reducing agent consumes the excess oxidative power before the excess oxidizing power of the chlorine-based germicide, so that the solidified state of the waste liquid solidified by the water-absorbing resin is chlorine-based. It does not decrease over time due to the action of the disinfectant, and because the water-absorbent resin absorbs medical waste liquid that has been sufficiently disinfected with the chlorine-based disinfectant, it can be infected even if the solidified state is a gel. The fear of is gone. Furthermore, since chlorine-based disinfectants also have the effect of deodorizing and decolorizing, even when blood cells are mixed in the waste liquid, the color is decolorized, which may give a worker a sense of visual anxiety. Disappears.
【０００９】ここで、前記塩素系殺菌剤として、次亜塩
素酸ナトリウムを用い、塩素還元剤としてチオ硫酸ナト
リウムを使用した場合の殺菌作用と余剰酸化力消費作用
について具体的に説明すると、次亜塩素ナトリウムは、
水溶液中で、次式（１）及び（２）のような平衡状態で
存在する。 Na+ ＋ H+ ＋ OCl- <=> Na+ ＋ HOCl （１） HOCl ＋ Cl- ＋ H+ <=> Cl2 ＋ H2O （２） ここで、HOCl及びCl2が殺菌に寄与し、次亜塩素HOClが
次式（３）のように酸化反応を起こし、殺菌は酸化さ
れ、その機能を失う。 HOCl → H+ ＋ Cl+ ＋ O（活性酸素） （３） 上記塩素系殺菌剤の細菌との酸化反応と共に、塩素還元
剤としてのチオ塩素酸ナトリウムが次式（４）のように
塩素系殺菌剤の塩素と反応を起こして、余剰塩素は還元
される。 Na2S2O3 ＋ 4Cl2 ＋ 5H2O → 2NaCl ＋ 2H2SO4 ＋ 6HCl （４） これにより、上記式（２）の平衡は右へ移動し、次亜塩
素酸は消費されることになる。Here, the bactericidal action and the excess oxidizing power consuming action when sodium hypochlorite is used as the chlorine-based disinfectant and sodium thiosulfate is used as the chlorine reducing agent will be specifically described. Sodium chloride is
In an aqueous solution, it exists in an equilibrium state as in the following formulas (1) and (2). Na + + H + + OCl - <=> Na + + HOCl (1) HOCl + Cl - + H + <=> Cl 2 + H 2 O (2) where, HOCl and Cl 2 contributes to sterilization, Hypochlorite HOCl causes an oxidation reaction as shown in the following formula (3), sterilization is oxidized, and its function is lost. HOCl → H + + Cl + + O (active oxygen) (3) Along with the oxidation reaction of the above-mentioned chlorine-based disinfectant with bacteria, sodium thiochlorate as a chlorine-reducing agent is disinfected with chlorine as shown in the following formula (4). Excess chlorine is reduced by reacting with chlorine in the agent. Na 2 S 2 O 3 + 4Cl 2 + 5H 2 O → 2NaCl + 2H 2 SO 4 + 6HCl (4) As a result, the equilibrium of the above formula (2) shifts to the right and hypochlorous acid is consumed. become.
【００１０】さらに、上記した構成成分以外の添加剤と
して、ｐＨ調整剤が添加され得る。このｐＨ調整剤は、
医療廃液が酸性の場合、塩素系殺菌剤と酸性廃液とが反
応して塩素ガスが発生することを防止する。ｐＨ調整剤
は、強アルカリの塩、弱酸又は弱塩基等、任意のものが
使用され得るが、好ましくは、塩素ガスの発生を防止で
きる範囲内で殺菌効果の高い所定のｐＨ（例えば、ｐＨ
６〜ｐＨ８．５）に調整できる緩衝作用のあるものがよ
い。このようなｐＨ調整剤として、例えば、リン酸塩等
が挙げられ、これらは、吸水性樹脂の吸水力を低下する
原因となるＣａ2+と結合して沈殿するため、吸水性樹脂
の吸水力低下が起こらないという点において都合がよ
い。さらにまた、上記した構成成分以外の添加剤とし
て、廃液中の電解質のイオン強度を低下させ、吸水性樹
脂の持つ親水性基と電解質の結合を防止する物質が添加
され得る。具体的には、医療廃液中に含まれるＣａ2+や
Ｍｇ2+をキレート化するＥＤＴＡ（エチレンジアミンテ
トラ酢酸）等のキレート剤や、イオン交換樹脂、イオン
感応物質、又は電解質と結合して沈殿する沈殿剤等が挙
げられ、キレート剤を用いた場合には医療廃液中に含ま
れる電解質に広範囲に反応して電解質のイオン強度を低
下させることができ、イオン交換樹脂やイオン感応物質
を用いる場合には医療廃液中に含まれるハロゲンイオン
も除去することが可能であり、また、沈殿剤は、電解質
の成分毎に用いればキレート剤等に比べて効果が高い。
尚、前記キレート剤は、金属イオンとの配位構造に基づ
いて、Ｎ，Ｏ−配位型、Ｏ，Ｏ−配位型、Ｎ，Ｓ−配位
型、及びＳ，Ｓ−配位型に分類することができるが、処
理すべき医療廃液の電解質濃度に応じてある程度の水溶
性を持つものであれば特に限定されることなく、これら
のキレート剤から任意のものが使用され得、これらキレ
ート剤は適当な塩の形でも用いられ得る。これらキレー
ト剤の中でも、コンプレクサン類、ルタレインコンプレ
クソン類、オキシン類が知られているＮ，Ｏ−配位型の
キレート剤が、特に好ましいキレート剤として挙げられ
得る。さらに好ましくは、前記Ｎ，Ｏ−配位型のキレー
ト剤の中でも、前記ＥＤＴＡを含むコンプレクサン類が
良好なキレート剤として挙げられる。前記コンプレクサ
ン類のキレート剤としては、具体的には、１，２−シク
ロヘキサンジアミン４酢酸（ＣｙＤＴＡ）、グリコール
エーテルジアミン４酢酸（ＧＥＤＴＡ）、ヘキサメチレ
ンジアミン４酢酸（ＨＤＴＡ）、イミノ２酢酸（ＩＤ
Ａ）、ヒドロキシエチルイミノ２酢酸（ＨＩＤＡ）、
１，３−ジアミノプロパン−２−オール４酢酸（ＤＰＴ
Ａ−ＯＨ）、ジエチレントリアミン５酢酸（ＤＴＰ
Ａ）、エチレンジアミン２酢酸（ＥＤＤＡ）、エチレン
ジアミン２酢酸２プロピオン酸（ＥＤＤＰ）、エチレン
ビス（オキシエチレンニトリロ）４酢酸（ＥＧＴＡ、グ
リコールエーテルジアミン４酢酸とも呼ばれる。）、エ
チレンジアミンーテトラキス（メチレンホスホン酸）
（ＥＤＴＰＯ）、エチレンジアミン２プロピオン酸（Ｅ
ＤＤＰ）、ヒドロキシエチルエチレンジアミン３酢酸
（ＥＤＴＡ−ＯＨ）、Ｎ−（２−ヒドロキシルエチル）
エチレンジアミン３酢酸（ＨＥＥＤＴＡ）、ニトリロ３
酢酸（ＮＴＡ）、ニトリロ３プロピオン酸（ＮＴＰ）、
ニトリロトリス（メチレンホスホン酸）、２（ヒドロキ
シエチル）グリシン（ＮＴＰＯ）、１，２−ジアミノプ
ロパン４酢酸（Ｍｅｔｈｙｌ−ＥＤＴＡ）等が挙げら
れ、これらのキレート剤の中でも、特にＥＤＴＡやＣｙ
ＤＴＡ、或いはこれらの塩が特に好ましい。また、上記
の他に芳香剤を加えることも考えられ得る。Further, a pH adjuster may be added as an additive other than the above-mentioned constituents. This pH adjuster
When the medical waste liquid is acidic, the chlorine-based disinfectant and the acidic waste liquid are prevented from reacting to generate chlorine gas. As the pH adjuster, any one such as a salt of a strong alkali, a weak acid or a weak base can be used, but preferably, a predetermined pH (for example, pH) having a high bactericidal effect within a range in which generation of chlorine gas can be prevented.
Those having a buffer action that can be adjusted to 6 to 8.5) are preferred. As such a pH adjuster, for example, phosphates and the like are cited, and these bind to and precipitate with Ca 2+ which causes a decrease in the water absorption of the water-absorbing resin. This is advantageous in that no degradation occurs. Furthermore, as an additive other than the above-mentioned constituents, a substance which lowers the ionic strength of the electrolyte in the waste liquid and prevents the bonding between the hydrophilic group of the water-absorbent resin and the electrolyte can be added. Specifically, it binds to and precipitates with a chelating agent such as EDTA (ethylenediaminetetraacetic acid) that chelates Ca 2+ or Mg 2+ contained in medical waste fluid, an ion exchange resin, an ion sensitive substance, or an electrolyte. Precipitants and the like can be mentioned, and when a chelating agent is used, the ionic strength of the electrolyte can be reduced by reacting widely with the electrolyte contained in the medical waste liquid, and when an ion exchange resin or an ion sensitive substance is used. Can also remove halogen ions contained in medical wastewater, and a precipitant is more effective than a chelating agent if used for each component of the electrolyte.
The chelating agent may be based on a coordination structure with a metal ion, such as N, O-coordination type, O, O-coordination type, N, S-coordination type, and S, S-coordination type. The chelating agent is not particularly limited as long as it has a certain degree of water solubility depending on the electrolyte concentration of the medical waste liquid to be treated, and any of these chelating agents can be used. Chelating agents can also be used in the form of a suitable salt. Among these chelating agents, N, O-coordination type chelating agents, for which complexans, rutalein complexones, and oxines are known, can be mentioned as particularly preferred chelating agents. More preferably, among the N, O-coordinating type chelating agents, complexans containing EDTA are mentioned as good chelating agents. Specific examples of the chelating agent for the complexans include 1,2-cyclohexanediaminetetraacetic acid (CyDTA), glycol etherdiaminetetraacetic acid (GEDTA), hexamethylenediaminetetraacetic acid (HDTA), and imino diacetic acid (ID).
A), hydroxyethyliminodiacetic acid (HIDA),
1,3-diaminopropan-2-ol tetraacetic acid (DPT
A-OH), diethylenetriaminepentaacetic acid (DTP
A), ethylenediamine diacetic acid (EDDA), ethylenediamine diacetic acid dipropionic acid (EDDP), ethylene bis (oxyethylene nitrilo) tetraacetic acid (EGTA, also called glycol ether diamine tetraacetic acid), ethylene diamine-tetrakis (methylene phosphonic acid)
(EDTPO), ethylenediamine-2-propionic acid (E
DDP), hydroxyethylethylenediamine triacetic acid (EDTA-OH), N- (2-hydroxylethyl)
Ethylenediamine triacetic acid (HEEDTA), Nitrilo 3
Acetic acid (NTA), nitrilo-3-propionic acid (NTP),
Nitrilotris (methylene phosphonic acid), 2 (hydroxyethyl) glycine (NTPO), 1,2-diaminopropanetetraacetic acid (Methyl-EDTA), and the like. Among these chelating agents, EDTA and Cy are particularly preferred.
DTA or salts thereof are particularly preferred. It is also conceivable to add fragrances in addition to the above.
【００１１】以上説明した医療廃液処理方法を達成可能
な成分を含有する医療廃液処理剤は、例えば、吸水性樹
脂、塩素系殺菌剤、及び塩素還元剤が、重量比で８０
％，１５％，５％の割合で含有され得る。また、医療廃
液処理剤は、前記各処理剤をオブラート状のデンプン
や、薬のカプセル等に利用されているゼラチン等のよう
な水溶性の包装容器内に、上記した反応順で各処理剤が
反応できるように収容し得る。具体的には、例えば、図
１に示すように、吸水性高分子をカプセルに包み、それ
を塩素還元剤と共にオブラートで包み、さらにこれを殺
菌剤と共にオブラートで包むことで前記医療廃液処理剤
は製造され得る。さらに、前記医療廃液処理剤は、例え
ば、廃液容器に医療廃液が溜まった後に添加することが
できるように形成され得る。このように廃液容器に医療
廃液が溜まった後に添加できるように医療廃液処理剤を
生成することにより、専用の廃液容器を使う必要がなく
なるので、既存の医療検査装置で使用されている廃液ボ
トル等にも簡単に適用することができる。また、医療廃
液処理剤の材料として水崩壊性樹脂を利用する場合に
は、例えば、繊維同士を水溶性の接着剤で結合した水崩
壊性不織布や水崩壊性紙等が利用され得、水溶性の接着
剤としてはポリビニルアルコール系接着剤等が利用され
得る。上記したような材料に各処理剤を封入して医療廃
液処理剤を形成すれば、医療廃液処理剤を、そのまま、
廃液中に投入することができるが、例えば、各処理剤だ
けを廃液中に投入できる形態の包装容器に各処理剤を収
容することも考えられ得る。The medical waste liquid treating agent containing a component capable of achieving the above-described medical waste liquid treating method includes, for example, a water absorbent resin, a chlorine-based disinfectant, and a chlorine reducing agent in a weight ratio of 80%.
%, 15%, 5%. In addition, the medical waste liquid treating agent is obtained by treating each treating agent in a water-soluble packaging container such as oblate-like starch or gelatin used for capsules of medicines in the above-described reaction order. Can be accommodated for reaction. Specifically, for example, as shown in FIG. 1, the water-absorbent polymer is wrapped in a capsule, wrapped in an oblate with a chlorine reducing agent, and further wrapped in an oblate with a bactericide, whereby the medical waste liquid treating agent is Can be manufactured. Further, the medical waste liquid treating agent can be formed so that it can be added after the medical waste liquid has accumulated in the waste liquid container, for example. By generating the medical waste liquid treating agent so that it can be added after the medical waste liquid has accumulated in the waste liquid container, it is not necessary to use a dedicated waste liquid container. Can also be easily applied. In addition, when a water-disintegrable resin is used as the material of the medical waste liquid treatment agent, for example, a water-disintegrable nonwoven fabric or a water-disintegrable paper in which fibers are bonded to each other with a water-soluble adhesive may be used. As the adhesive, a polyvinyl alcohol-based adhesive or the like can be used. If a medical waste liquid treatment agent is formed by enclosing each treatment agent in the above-described material, the medical waste liquid treatment agent can be used as it is.
Although it can be introduced into the waste liquid, for example, it is also conceivable to store each processing agent in a packaging container in which only each processing agent can be introduced into the waste liquid.
【００１２】上記した前記医療廃液処理剤は、密閉性の
ある廃液容器内に様々な方法で配置され得る。例えば、
図２に示すように配置した場合には、密閉性のある廃液
容器内に廃液が溜まるに従って、医療廃液処理剤が順次
廃液中に自動的に放出され、廃液を順次殺菌及び固形化
する。また、例えば、図３に示すように配置した場合に
は、医療廃液が廃液容器の上まで溜まってから医療廃液
処理剤が廃液中に自動的に放出され、廃液を殺菌及び固
形化する。さらに、例えば、図４に示すように配置した
場合には、作業者が適宜、放出棒を押すことにより医療
廃液処理剤を一度に、又は数回に分けて廃液中に放出す
ることができる。尚、図２〜図４に示すように廃液容器
を構成する場合には、医療廃液処理剤は、各処理剤が上
述の反応順で反応できるように、例えば、図１に示すよ
うに生成される。また、廃液容器は、図５に示すように
構成することもでき、このように構成した場合には、作
業者が適宜、必要な処理剤に対応する放出棒を押すこと
で各処理剤を順に放出することができる。The above-mentioned medical waste liquid treating agent can be arranged in various ways in a hermetically sealed waste liquid container. For example,
When disposed as shown in FIG. 2, as the waste liquid accumulates in the hermetically sealed waste liquid container, the medical waste liquid treatment agent is automatically released into the waste liquid sequentially, and the waste liquid is sequentially sterilized and solidified. Further, for example, when the medical waste liquid is disposed as shown in FIG. 3, the medical waste liquid treatment agent is automatically released into the waste liquid after the medical waste liquid has accumulated on the waste liquid container, and the waste liquid is sterilized and solidified. Further, for example, when the medical waste liquid treating agent is arranged as shown in FIG. 4, the medical waste liquid treating agent can be discharged into the waste liquid at once or several times by appropriately pressing the discharge rod. When the waste liquid container is configured as shown in FIGS. 2 to 4, the medical waste liquid treatment agent is generated, for example, as shown in FIG. 1 so that the treatment agents can react in the above-described reaction order. You. In addition, the waste liquid container may be configured as shown in FIG. 5. In such a case, the operator sequentially presses the discharge rods corresponding to the required processing agents to sequentially process the processing agents. Can be released.
【００１３】[0013]
【発明の効果】以上説明したように、本発明に係る医療
廃液処理方法及び医療廃液処理剤は、前記塩素系殺菌剤
による医療廃液中の細菌の殺菌、塩素還元剤による塩素
系殺菌剤の余剰な酸化力の消費、及び吸水性高分子によ
る医療用廃液の固形化が順次行われるので、固形化され
た医療廃液からの感染の可能性は全くなくなり、処理作
業者に対する充分な安全性を確保することができる。ま
た、殺菌剤として塩素系殺菌剤を用いることにより、医
療廃液の脱色を行えるので、例えば、医療廃液中に血液
が混入している場合でも、血液の赤色は脱色され、処理
作業者に視覚的な不安感を与えることがなくなり、処理
作業者の精神的負担を軽減することができる。また、本
発明に係る医療廃液処理容器は、内部に医療廃液を収容
でき、本発明に係る医療廃液処理剤を医療廃液中に放出
可能に備えているので、単に医療廃液を医療廃液処理容
器内に排出していくだけで、作業者を介さずに廃液の殺
菌及び固形化が達成できるようになるので、簡単に医療
廃液を処理できるようになり、また安全性も向上すると
いう効果を奏する。As described above, the medical waste liquid treatment method and the medical waste liquid treatment agent according to the present invention are capable of disinfecting bacteria in medical waste liquid by the chlorine-based disinfectant and surplus chlorine-disinfectant by the chlorine reducing agent. As the oxidizing power is consumed and the medical wastewater is solidified by the water-absorbing polymer, the possibility of infection from the solidified medical wastewater is completely eliminated, ensuring sufficient safety for the processing workers. can do. In addition, by using a chlorine-based disinfectant as a disinfectant, the medical waste liquid can be decolorized.For example, even when blood is mixed in the medical waste liquid, the red color of the blood is decolorized and visually recognized by the processing operator. It is possible to reduce the mental burden on the processing operator. Further, the medical waste liquid treatment container according to the present invention can accommodate the medical waste liquid therein and is provided with the medical waste liquid treatment agent according to the present invention so as to be able to be discharged into the medical waste liquid. By simply discharging the wastewater, sterilization and solidification of the wastewater can be achieved without the intervention of an operator, so that the medical wastewater can be easily treated and the safety can be improved.
【図１】 医療廃液処理剤の構成の一実施例を示す図で
ある。FIG. 1 is a view showing one embodiment of a configuration of a medical waste liquid treating agent.
【図２】 医療廃液処理容器の構成の一実施例を示す図
である。FIG. 2 is a view showing one embodiment of a configuration of a medical waste liquid treatment container.
【図３】 医療廃液処理容器の構成の別の実施例を示す
図である。FIG. 3 is a view showing another embodiment of the configuration of the medical waste liquid treatment container.
【図４】 医療廃液処理容器の構成のさらに別の実施例
を示す図である。FIG. 4 is a view showing still another embodiment of the configuration of the medical waste liquid treatment container.
【図５】 医療廃液処理容器の構成のさらに別の実施例
を示す図である。FIG. 5 is a view showing still another embodiment of the configuration of the medical waste liquid treatment container.
Claims (14)
元剤、吸水性高分子を添加し、 前記塩素系殺菌剤で医療廃液中の細菌やウィルスを殺菌
し、 前記塩素還元剤で塩素系殺菌剤の余剰な酸化力を消費
し、 前記吸水性高分子で医療用廃液を吸水して固形化するこ
とを特徴とする医療廃液処理方法。Claims: 1. A chlorine-based disinfectant, a chlorine-reducing agent, and a water-absorbing polymer are added to medical wastewater, and bacteria and viruses in the medical wastewater are disinfected with the chlorine-based disinfectant. A method for treating medical waste liquid, comprising consuming excess oxidizing power of a chlorine-based disinfectant and solidifying the medical waste liquid by absorbing water with the water-absorbing polymer.
性高分子を順に添加することを特徴とする請求項１に記
載の医療廃液処理方法。2. The method according to claim 1, wherein the chlorine-based disinfectant, the chlorine reducing agent and the water-absorbing polymer are added in order.
度及び塩素還元剤の余剰な酸化力の消費速度より、医療
廃液を吸水する速度が遅い吸水性高分子を用いて、 前記塩素系殺菌剤、塩素還元剤及び吸水性高分子を同時
に添加することを特徴とする請求項１に記載の医療廃液
処理方法。3. The chlorine-based disinfectant using a water-absorbing polymer having a slower rate of absorbing medical waste liquid than at least the disinfection rate of the chlorine-based disinfectant and the consumption rate of excess oxidizing power of the chlorine-reducing agent. The medical waste liquid treatment method according to claim 1, wherein a chlorine reducing agent and a water-absorbing polymer are simultaneously added.
性材料で覆い、該吸水性高分子の作用開始時間を、前記
塩素系殺菌剤及び塩素還元剤の作用開始時間より遅らせ
ることにより、前記吸水性高分子の吸水時間を遅くする
ことを特徴とする請求項１に記載の医療廃液処理方法。4. The method according to claim 1, wherein the water-absorbing polymer is covered with a water-disintegrable or water-soluble material, and the action start time of the water-absorbent polymer is delayed from the action start time of the chlorine-based disinfectant and the chlorine reducing agent. 2. The medical waste liquid treatment method according to claim 1, wherein the water absorption time of the water-absorbing polymer is delayed.
塩素系殺菌剤と、 前記塩素系殺菌剤の余剰な酸化力を消費する塩素還元剤
と、 医療廃液を吸水して固形化する吸水性高分子とを有する
ことを特徴とする医療廃液処理剤。5. A chlorine-based disinfectant for disinfecting bacteria and viruses in medical wastewater, a chlorine reducing agent for consuming excess oxidizing power of the chlorine-based disinfectant, and a water-absorbing agent for absorbing and solidifying the medical wastewater A medical waste liquid treating agent comprising a polymer.
素系殺菌剤の殺菌速度及び塩素還元剤の消費速度より遅
いことを特徴とする請求項５に記載の医療廃液処理剤。6. The medical waste liquid treating agent according to claim 5, wherein the water absorbing rate of the water absorbing polymer is lower than the disinfecting rate of the chlorine-based disinfectant and the consumption rate of the chlorine reducing agent.
又は水溶解性材料で覆うことを特徴とする請求項５に記
載の医療廃液処理剤。7. The medical waste liquid treating agent according to claim 5, wherein at least the water-absorbing polymer is covered with a water-disintegrable or water-soluble material.
ール酸ナトリウム、次亜塩素酸ナトリウム、さらし粉又
は高度さらし粉から成ることを特徴とする請求項５〜７
の何れか一項に記載の医療廃液処理剤。8. The chlorinated fungicide comprises sodium dichloroisocyanurate, sodium hypochlorite, bleached powder or highly bleached powder.
The medical waste liquid treating agent according to any one of the above.
ナトリウムから成ることを特徴とする請求項５〜８の何
れか一項に記載の医療廃液処理剤。9. The medical waste liquid treating agent according to claim 5, wherein the chlorine reducing agent comprises a protein or sodium thiosulfate.
Ｈを、 塩素ガスの発生を防止でき、かつ、塩素ガスの発生を防
止できる範囲で殺菌効果の高い値に調整するためのｐＨ
調整剤をさらに含むことを特徴とする請求項５〜９の何
れか一項に記載の医療廃液処理剤。10. The p in the medical waste liquid after the chlorine-based disinfectant is charged.
PH for adjusting H to a value having a high bactericidal effect within a range in which generation of chlorine gas can be prevented and generation of chlorine gas can be prevented.
The medical waste liquid treating agent according to any one of claims 5 to 9, further comprising a regulator.
を低下させ、前記吸水性高分子が持つ親水性基と電解質
との結合を防止する物質をさらに含むことを特徴とする
請求項５〜１０の何れか一項に記載の医療廃液処理剤。11. The method according to claim 5, further comprising a substance that lowers the ionic strength of the electrolyte contained in the waste liquid and prevents the bonding between the hydrophilic group of the water-absorbing polymer and the electrolyte. The medical waste liquid treating agent according to any one of the above.
性高分子が、少なくとも医療廃液中に投入後に、これら
各成分を医療廃液中へ放出可能な容器に収容されている
ことを特徴とする請求項５〜１１の何れか一項に記載の
医療廃液処理剤。12. The method according to claim 1, wherein the chlorine-based disinfectant, the chlorine reducing agent, and the water-absorbing polymer are contained in a container capable of releasing each of these components into the medical waste liquid at least after being introduced into the medical waste liquid. The medical waste liquid treating agent according to any one of claims 5 to 11.
料又は水崩壊性材料から成ることを特徴とする請求項１
２に記載の医療廃液処理剤。13. The method according to claim 1, wherein at least a part of the container is made of a water-soluble material or a water-disintegrable material.
3. The medical waste liquid treating agent according to 2.
を、医療廃液中に放出可能に備えていることを特徴とす
る医療廃液処理容器。14. A medical waste liquid treatment, wherein a medical waste liquid can be accommodated therein, and the medical waste liquid treating agent according to any one of claims 5 to 13 is provided so as to be able to be released into the medical waste liquid. container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10604398A JP4077925B2 (en) | 1998-04-16 | 1998-04-16 | Medical waste liquid treatment method, medical waste liquid treatment agent, and medical waste liquid treatment container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10604398A JP4077925B2 (en) | 1998-04-16 | 1998-04-16 | Medical waste liquid treatment method, medical waste liquid treatment agent, and medical waste liquid treatment container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11299844A true JPH11299844A (en) | 1999-11-02 |
| JP4077925B2 JP4077925B2 (en) | 2008-04-23 |
Family
ID=14423619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10604398A Expired - Lifetime JP4077925B2 (en) | 1998-04-16 | 1998-04-16 | Medical waste liquid treatment method, medical waste liquid treatment agent, and medical waste liquid treatment container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4077925B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007538110A (en) * | 2004-05-12 | 2007-12-27 | 株式会社日本触媒 | Waste liquid solidifying agent, production method thereof and use thereof |
| WO2013121716A1 (en) * | 2012-02-17 | 2013-08-22 | テルモ株式会社 | Container for housing biological excretion fluid |
| JP2015532615A (en) * | 2012-08-16 | 2015-11-12 | カクタス, リミティド ライアビリティー カンパニーCactus, LLC | Medical waste treatment assembly |
| JP2017140619A (en) * | 2011-12-28 | 2017-08-17 | 日本製紙株式会社 | Method for treating used sanitary article |
| US10086416B2 (en) | 2010-04-27 | 2018-10-02 | Stryker Corporation | Pharmaceutical waste disposal assembly |
| JP2019076388A (en) * | 2017-10-24 | 2019-05-23 | 大研医器株式会社 | Waste fluid treatment method |
| JP2020116535A (en) * | 2019-01-25 | 2020-08-06 | 大研医器株式会社 | Waste liquid disposal composition and waste liquid disposal method |
-
1998
- 1998-04-16 JP JP10604398A patent/JP4077925B2/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007538110A (en) * | 2004-05-12 | 2007-12-27 | 株式会社日本触媒 | Waste liquid solidifying agent, production method thereof and use thereof |
| US8598405B2 (en) | 2004-05-12 | 2013-12-03 | Nippon Shokubai Co., Ltd. | Waste solution solidifying agent, process for preparing the same and use of the same |
| US10086416B2 (en) | 2010-04-27 | 2018-10-02 | Stryker Corporation | Pharmaceutical waste disposal assembly |
| US10646907B2 (en) | 2010-04-27 | 2020-05-12 | Stryker Corporation | Pharmaceutical waste disposal assembly |
| US11292037B2 (en) | 2010-04-27 | 2022-04-05 | Stryker Corporation | Pharmaceutical waste disposal assembly |
| JP2017140619A (en) * | 2011-12-28 | 2017-08-17 | 日本製紙株式会社 | Method for treating used sanitary article |
| WO2013121716A1 (en) * | 2012-02-17 | 2013-08-22 | テルモ株式会社 | Container for housing biological excretion fluid |
| JP2015532615A (en) * | 2012-08-16 | 2015-11-12 | カクタス, リミティド ライアビリティー カンパニーCactus, LLC | Medical waste treatment assembly |
| JP2019076388A (en) * | 2017-10-24 | 2019-05-23 | 大研医器株式会社 | Waste fluid treatment method |
| JP2020116535A (en) * | 2019-01-25 | 2020-08-06 | 大研医器株式会社 | Waste liquid disposal composition and waste liquid disposal method |
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|---|---|
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