JP2013233523A - Dissolution sterilizing apparatus of solid chemical agent - Google Patents
Dissolution sterilizing apparatus of solid chemical agent Download PDFInfo
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- JP2013233523A JP2013233523A JP2012108831A JP2012108831A JP2013233523A JP 2013233523 A JP2013233523 A JP 2013233523A JP 2012108831 A JP2012108831 A JP 2012108831A JP 2012108831 A JP2012108831 A JP 2012108831A JP 2013233523 A JP2013233523 A JP 2013233523A
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- 239000007787 solid Substances 0.000 title claims abstract description 79
- 238000004090 dissolution Methods 0.000 title claims abstract description 38
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 23
- 239000013043 chemical agent Substances 0.000 title abstract 5
- 239000000243 solution Substances 0.000 claims abstract description 89
- 238000002347 injection Methods 0.000 claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 40
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 58
- 239000003814 drug Substances 0.000 claims description 17
- 229940079593 drug Drugs 0.000 claims description 17
- 229940126589 solid medicine Drugs 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 63
- 238000004140 cleaning Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 36
- 239000000460 chlorine Substances 0.000 description 36
- 229910052801 chlorine Inorganic materials 0.000 description 36
- 239000003795 chemical substances by application Substances 0.000 description 34
- 238000000034 method Methods 0.000 description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 235000011116 calcium hydroxide Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- -1 calcium hypochlorite compound Chemical class 0.000 description 1
- 239000012320 chlorinating reagent Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 150000007973 cyanuric acids Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007922 dissolution test Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910003480 inorganic solid Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
Description
本発明は、水利用施設の滅菌用の水溶性固形薬剤溶解装置に関するものであり、さらに詳しくは、次亜塩素酸カルシウム化合物や塩素化イソシアヌール酸（または塩）等の無機もしくは有機の固形塩素剤を溶解する滅菌装置に関する。 The present invention relates to a water-soluble solid drug dissolving apparatus for sterilization of water use facilities, and more specifically, inorganic or organic solid chlorine such as calcium hypochlorite compound and chlorinated isocyanuric acid (or salt). The present invention relates to a sterilization apparatus for dissolving an agent.
生活排水、産業排水、プール循環水、浴場循環水などは、滅菌のため前述の固形塩素剤を用いて殺菌処理を行った後、放流またはプールや浴場等の水利用施設で循環再利用されている。従来、固形塩素剤を処理水中に溶解添加する方法として、循環水の一部を分岐し、これを溶解に供する水（以下、処理水と記す）として、固形塩素剤を充填した密閉容器内に強制的に流通させて溶解を行い、循環水系内に設置された濾過機の入口と出口の間に生じる差圧を利用して溶解液を循環水の主配管に注入する方法（例えば、特許文献１参照）や、固形塩素剤の溶解液を入れた溶解液槽を注入する循環水系の主配管よりも高い位置に設置してヘッド圧で注入する方法（例えば、特許文献１参照）や、開放常圧型の溶解装置において、循環水の一部を分岐した処理水をスプレーノズルで固形塩素剤に噴霧して溶解を行い、溶解液をポンプを利用して循環水の主配管へ注入する方法（例えば、特許文献２参照）が提案されている。 Domestic wastewater, industrial wastewater, pool circulating water, bathhouse circulating water, etc. are sterilized using the above-mentioned solid chlorinating agent for sterilization and then released or recycled in water use facilities such as pools and bathhouses. Yes. Conventionally, as a method of dissolving and adding a solid chlorine agent in treated water, a part of circulating water is branched and used as a water for dissolution (hereinafter referred to as treated water) in a sealed container filled with the solid chlorine agent. A method of forcibly circulating and dissolving, and injecting the solution into the main pipe of the circulating water using the differential pressure generated between the inlet and outlet of the filter installed in the circulating water system (for example, Patent Documents) 1), a method of injecting with a head pressure by installing it at a position higher than the main pipe of the circulating water system for injecting a solution tank containing a solution of solid chlorine agent (see, for example, Patent Document 1), or opening In a normal-pressure type dissolution apparatus, the treated water, which is part of the circulating water, is sprayed onto the solid chlorine agent with a spray nozzle to dissolve, and the solution is injected into the circulating water main pipe using a pump ( For example, see Patent Document 2).
密閉容器に処理水を導入して固形塩素剤の溶解を行い、循環水系内に設置された濾過機の入口と出口に生じる差圧を利用して溶解液を循環水の主配管へ注入する方法では、濾過機の運転時間の経過により差圧が変動し、これに連動して溶解液の注入量も共に変動し、滅菌に供する塩素濃度を一定に制御することが困難である。 A method in which treated water is introduced into a sealed container to dissolve the solid chlorine agent, and the solution is injected into the main piping of the circulating water using the differential pressure generated at the inlet and outlet of the filter installed in the circulating water system. Then, the differential pressure fluctuates with the elapse of the operation time of the filter, and the injection amount of the dissolved solution also fluctuates in conjunction with this, and it is difficult to control the concentration of chlorine used for sterilization at a constant level.
また、前記の濾過機の差圧を利用して溶解液を循環水の主配管へ注入する方法に加え、特許文献１ではプール水の循環水系の主配管よりも高い位置に設置してヘッド圧で溶解液を注入する方法等が示されているが、実際のプールや浴場等の水利用施設においては、濾過機や固形薬剤の溶解滅菌装置等の設備が該水利用施設よりも低い位置、例えば、階下に設置される場合もある。その場合、注入に必要な差圧が取れず、濾過機の出口側配管への溶解液の注入が困難となり、滅菌処理が不十分になる。
Further, in addition to the method of injecting the solution into the main piping of the circulating water using the differential pressure of the filter, in
また、浴場や屋内プール等の温水を利用する水利用施設では、細菌が繁殖しやすいため、水利用施設のみならず濾過機内部をも滅菌する。この場合、固形塩素剤の溶解液を濾過機の入口側配管へ注入する必要がある。しかし、その場合、濾過機の差圧を注入に利用することは困難である。 Also, in water-use facilities that use hot water such as baths and indoor pools, bacteria are easy to propagate, so not only the water-use facility but also the inside of the filter is sterilized. In this case, it is necessary to inject the solution of the solid chlorine agent into the inlet side piping of the filter. However, in that case, it is difficult to use the differential pressure of the filter for injection.
すなわち、機械装置の構造や設置方法等によって生じる差圧を溶解液の注入に利用することが困難な施設では、溶解液の注入をポンプで行うことが有利である。 That is, in a facility where it is difficult to use the differential pressure generated by the structure of the mechanical device, the installation method, or the like for injecting the solution, it is advantageous to inject the solution with a pump.
しかしながら、特に無機の固形塩素剤を長期にわたり溶解する場合、溶解液槽の壁面や配管等の接液部に消石灰や炭酸カルシウム等のスケールの析出や沈殿が避けられず、また固形塩素剤に少量含まれるシリカやアルミナ系の水不溶固形分が溶解液槽内に堆積するといった問題があった。これらのスケールや水不溶固形分の堆積は、溶解液槽に接続された配管や注入ポンプの閉塞や、ポンプ部品の損耗の原因となる。その結果、ポンプ内部の清掃や損耗部品の交換といったメンテナンスの頻度が増加したり、ポンプのキャビテーションにより送液が困難になる場合や、またポンプの交換が必要になるという欠点があった。 However, especially when dissolving inorganic solid chlorine agent over a long period of time, precipitation and precipitation of scales such as slaked lime and calcium carbonate is inevitable in the liquid contact part of the wall of the solution tank and piping, etc. There was a problem that the silica or alumina-based water-insoluble solid contained was deposited in the solution tank. Accumulation of these scales and water-insoluble solids causes blockage of piping and injection pumps connected to the solution tank and wear of pump parts. As a result, there are drawbacks that the frequency of maintenance such as cleaning the inside of the pump and replacing worn parts increases, liquid feeding becomes difficult due to pump cavitation, and replacement of the pump is necessary.
さらに、前記のような問題を未然に防止するためには、定期的に運転を停止して溶解液槽内を清掃する必要があり、操作と費用が嵩むことになる。 Furthermore, in order to prevent the above problems, it is necessary to periodically stop the operation and clean the inside of the solution tank, which increases the operation and cost.
本発明は、固形塩素剤の溶解液注入ポンプの吐出配管にエゼクターを設置し、溶解液槽と該エゼクターを接続することにより、溶解液槽内のスケールおよび水不溶固形分をエゼクターで吸入し、溶解液槽外への排出を促すことによって前記の課題を解決したものである。 The present invention, by installing an ejector in the discharge pipe of the solid chlorine agent solution injection pump, connecting the solution tank and the ejector, the scale in the solution tank and the water-insoluble solid content is inhaled by the ejector, The problem is solved by encouraging the discharge from the solution tank.
以下、本発明の固形薬剤の溶解滅菌装置を詳細に説明する。 The solid drug dissolution sterilization apparatus of the present invention will be described in detail below.
本発明は、水溶性固形薬剤の溶解液を循環させて滅菌処理する装置において、溶解液を注入するポンプと溶解液を注入するエゼクターとが併設され、該エゼクターが該ポンプの吐出配管上に設置されてなることを特徴とする固形薬剤の溶解滅菌装置に関するものである。 The present invention relates to an apparatus for circulating and sterilizing a solution of a water-soluble solid drug, a pump for injecting the solution and an ejector for injecting the solution, and the ejector installed on the discharge pipe of the pump The present invention relates to an apparatus for dissolving and sterilizing a solid drug.
特に、固形塩素剤を充填する薬室Ａと、薬室底面にあって固形塩素剤を保持する機能を有する目皿Ｂと、溶解液を保持する溶解液槽Ｃと、溶解液槽の液面調整装置としてフロート式定水位弁Ｄおよび液面調整室Ｅと、固形塩素剤の溶解に供する処理水を装置内へ導入する導入配管Ｌ１と、処理水の導入量を調整するために導入配管Ｌ１上に設置された取水弁Ｖと、溶解液を液出口Ｊを介して注入ポンプＧへ供給する吸入配管Ｌ２と、ポンプの吐出配管Ｌ４と、溶解液を液出口Ｋを介してポンプの吐出配管Ｌ４上に設置されたエゼクターＨへ供給する吸入配管Ｌ３により構成されるものであって、図２で示されるものである。 In particular, a chamber A filled with a solid chlorine agent, a pan B having a function of holding the solid chlorine agent at the bottom of the chamber, a solution tank C for holding a solution, and a liquid level of the solution tank Float type constant water level valve D and liquid level adjustment chamber E as adjustment devices, introduction piping L1 for introducing treated water for dissolution of the solid chlorine agent into the device, and introduction piping L1 for adjusting the amount of treated water introduced The intake valve V installed above, the suction pipe L2 for supplying the solution to the injection pump G via the liquid outlet J, the pump discharge pipe L4, and the pump discharge pipe for the solution via the liquid outlet K This is constituted by a suction pipe L3 for supplying to an ejector H installed on L4, as shown in FIG.
本発明の固形薬剤の溶解滅菌装置は、例えば、図１に示すようなプール水の循環水系内において使用される。図１においては、水利用施設であるプール２より取水したプール水を所定の水質に保つ処理を行うために、循環ポンプ３によりプール水を濾過機４に送って異物を除去するが、濾過前のプール水の一部を処理水取込口５より分岐して固形塩素剤の溶解液を調製する固形薬剤の溶解滅菌装置１へ導入して、該溶解液を処理水合流点６で濾過機を経たプール水と混合し、殺菌消毒を行う。すなわち、処理水取込口５で分岐された処理水は図２の薬剤溶解用の処理水導入配管Ｌ１を経て固形薬剤の溶解滅菌装置１の内部へ導入され、この処理水導入配管Ｌ１より供給された処理水によって薬室Ａ内の目皿Ｂの上に充填された固形塩素剤を溶解し、該溶解液は溶解液槽Ｃに保持される。該溶解液の一部は溶解液槽Ｃの底部の液出口Ｊに連結された吸入配管Ｌ２を経て注入ポンプＧにより吐出配管Ｌ４に加圧送液される。また、該溶解液の一部は溶解液槽Ｃの底部の液出口Ｋに連結された吸入配管Ｌ３を経て注入ポンプＧの吐出配管Ｌ４上に設置されたエゼクターＨにより吸入され、吐出配管Ｌ４に注入される。そして、合流した固形塩素剤溶解液配管Ｌ５は、循環水系の主配管上の処理水合流点６に接続され、固形塩素剤の溶解液は循環水と合流・混合され、循環水が滅菌される。溶解液と共に注入ポンプＧやエゼクターＨにより吸入され、循環水に注入された消石灰や炭酸カルシウム等のスケールや固形塩素剤に含まれる水不溶固形分は、循環水系内に設置された濾過機４で捕集される。
The solid drug dissolution sterilization apparatus of the present invention is used, for example, in a circulating water system of pool water as shown in FIG. In FIG. 1, in order to perform processing for keeping the pool water taken from the
注入ポンプＧに加え、エゼクターＨで溶解液を注入ポンプＧの吐出配管Ｌ４に注入する機能により、消石灰や炭酸カルシウム等のスケールや固形塩素剤に含まれる水不溶固形分の排出が促され、注入ポンプＧのみで溶解液の注入を行う場合と比較して、溶解液槽Ｃ内に堆積するスケールや水不溶固形分の総量が減少する。 In addition to the injection pump G, the function of injecting the solution with the ejector H into the discharge pipe L4 of the injection pump G facilitates the discharge of water-insoluble solids contained in scales and solid chlorine agents such as slaked lime and calcium carbonate. Compared with the case where the solution is injected only by the pump G, the total amount of scale and water-insoluble solids deposited in the solution tank C is reduced.
また、注入ポンプＧのみで溶解液の注入を行う場合と比較して、吸入配管Ｌ２を介して注入ポンプＧに吸入される消石灰や炭酸カルシウム等のスケールや固形塩素剤に含まれる水不溶固形分の量が大幅に低減される。そして、これらのことにより運転は安定し、固形薬剤の溶解と滅菌をスムーズに行うことができる。 Compared with the case where the solution is injected only by the injection pump G, the water-insoluble solid content contained in the scale and solid chlorine agent such as slaked lime and calcium carbonate sucked into the injection pump G via the suction pipe L2. The amount of is greatly reduced. And by these things, a driving | operation is stabilized and melt | dissolution and sterilization of a solid chemical | medical agent can be performed smoothly.
本発明の固形薬剤の溶解滅菌装置は、形状、大きさ、材質に特に制限はない。円筒であっても、方形であってもよい。また、固形塩素剤を充填する薬室Ａの内部が仕切り板によって複数に区切られていてもよい。また、溶解液槽Ｃの液深に制限はないが、溶解液の注入装置である注入ポンプＧおよびエゼクターＨの吸入の安定性の観点から、溶解液槽Ｃの溶解液槽底面からの液深が１０ｃｍ以上であることが好ましく、１５ｃｍ以上であることが特に好ましい。 The shape, size, and material of the solid drug dissolution sterilization apparatus of the present invention are not particularly limited. It may be a cylinder or a square. Moreover, the inside of the chamber A filled with the solid chlorine agent may be divided into a plurality by partition plates. Further, although there is no limitation on the liquid depth of the dissolution liquid tank C, the liquid depth from the bottom of the dissolution liquid tank of the dissolution liquid tank C from the viewpoint of inhalation stability of the injection pump G and the ejector H which are injection apparatuses of the dissolution liquid. Is preferably 10 cm or more, and particularly preferably 15 cm or more.
溶解液槽Ｃの液面調整を行う装置においては、その機能が同じであれば、前記のフロート式定水位弁Ｄに限定されず、電極式液面計と電気回路で構成される液面調整装置や、液深の変化による圧力変化を検出する差圧式液面計と電気回路で構成される液面調整装置であってもよい。 In the apparatus for adjusting the liquid level of the dissolution tank C, as long as the function is the same, the liquid level adjustment is not limited to the float type constant water level valve D, but is constituted by an electrode type liquid level gauge and an electric circuit. It may be a liquid level adjustment device constituted by a device or a differential pressure type liquid level gauge that detects a pressure change due to a change in liquid depth and an electric circuit.
また、注入ポンプＧは種々選択できるが、注入ポンプＧの吸入による溶解液槽Ｃの液切れを防止する観点から、注入ポンプＧの定格流量は、処理水を装置内へ導入する導入配管Ｌ１や、取水弁Ｖや、フロート式定水位弁Ｄの定格流量を下回る必要がある。注入ポンプＧの定格流量は、導入配管Ｌ１、取水弁Ｖ、フロート式定水位弁Ｄの内、最も小さい定格流量の０．８倍以下であることが好ましい。溶解液の注入量の確認は、例えば、図２の処理水導入配管Ｌ１上に設置された流量計Ｆによって確認することができる。 Various injection pumps G can be selected, but from the viewpoint of preventing the solution tank C from running out of liquid due to the suction of the injection pump G, the rated flow rate of the injection pump G is the introduction pipe L1 for introducing treated water into the apparatus, It is necessary to be lower than the rated flow rate of the intake valve V and the float type constant water level valve D. The rated flow rate of the injection pump G is preferably 0.8 times or less of the smallest rated flow rate among the introduction pipe L1, the intake valve V, and the float type constant water level valve D. Confirmation of the injection amount of the dissolving liquid can be confirmed by, for example, a flow meter F installed on the treated water introduction pipe L1 in FIG.
また、エゼクターＨは種々選択できるが、最大使用圧力が１．０ＭＰａ以上であって、最大流量が１０Ｌ／ｍｉｎ以上、吸入流量が３Ｌ／ｍｉｎ以上の能力を有するものが好ましい。 In addition, the ejector H can be variously selected, but those having a maximum working pressure of 1.0 MPa or more, a maximum flow rate of 10 L / min or more, and a suction flow rate of 3 L / min or more are preferable.
そして、溶解液槽底部に少なくとも２つの液出口を有し、液出口の一方が注入ポンプと溶解液槽を連結する吸入配管Ｌ２に接続され、他方がエゼクターと溶解液槽を連結する吸入配管Ｌ３に接続されていることが好ましい。 The bottom of the dissolution liquid tank has at least two liquid outlets, one of the liquid outlets is connected to a suction pipe L2 connecting the injection pump and the dissolution liquid tank, and the other is a suction pipe L3 connecting the ejector and the dissolution liquid tank. It is preferable that it is connected to.
溶解液を注入ポンプＧに供給する吸入配管Ｌ２が溶解液槽Ｃと連結する液出口Ｊは、溶解液槽Ｃの下部であれば、底面、側面のいずれでもよいが、固形塩素剤に含まれる水不溶固形分の吸入を低減するために、液面調整室Ｅの底面に配置することが好ましい。この時、吸入配管Ｌ２が溶解液槽Ｃの内部へ挿入され、液出口Ｊが溶解液槽Ｃの内部に位置してもよい。 The liquid outlet J connecting the suction pipe L2 for supplying the solution to the injection pump G with the solution tank C may be on the bottom or the side as long as it is the lower part of the solution tank C, but is included in the solid chlorine agent. In order to reduce the inhalation of water-insoluble solid content, it is preferable to dispose on the bottom surface of the liquid level adjustment chamber E. At this time, the suction pipe L2 may be inserted into the solution tank C, and the solution outlet J may be positioned inside the solution tank C.
溶解液をエゼクターＨに供給する吸入配管Ｌ３が溶解液槽Ｃと連結する液出口Ｋは、溶解液槽Ｃの下部であれば、底面、側面のいずれでもよいが、固形塩素剤に含まれる水不溶固形分の吸入を促すために、目皿Ｂの直下に配置し、さらに溶解液槽Ｃの底面に配置することが好ましい。この時、吸入配管Ｌ３が溶解液槽Ｃの内部へ挿入され、液出口Ｋが溶解液槽Ｃの内部に位置してもよい。 The liquid outlet K connecting the suction pipe L3 for supplying the solution to the ejector H with the solution tank C may be on the bottom or the side as long as it is the lower part of the solution tank C, but the water contained in the solid chlorine agent. In order to promote the inhalation of insoluble solids, it is preferable to dispose the solution directly under the eye plate B and further to the bottom of the solution tank C. At this time, the suction pipe L3 may be inserted into the dissolution liquid tank C, and the liquid outlet K may be positioned inside the dissolution liquid tank C.
また、液出口Ｊを介して水不溶固形分が注入ポンプＧに吸入されることを低減しつつ、かつ液出口Ｋを介して水不溶固形分がエゼクターに吸入されることを促進するために、溶解液槽底部に少なくとも２つ設置された液出口を結ぶ線分を分割する位置に、溶解液槽底面上に連続する高さ５ｃｍ以上の堰を設けることが好ましい。例えば、図２で示すように、液出口Ｊおよび液出口Ｋを結ぶ線分を分割する位置に溶解液槽Ｃの底部を２つ以上に仕切る堰Ｗを設置してもよい。該堰Ｗの高さは、溶解液槽Ｃの底面から５ｃｍより高く、かつ目皿Ｂの設置位置より低く設定することが好ましい。該堰Ｗの高さを溶解液槽Ｃの底面から高さ５ｃｍより高く設定すると、液出口Ｋを介してエゼクターＨに吸入される水不溶固形分量が増加し、溶解液槽Ｃ底部に堆積する水不溶固形分量が著しく減少するため好ましい。また、該堰Ｗの高さを目皿Ｂの設置位置より高く設定すると、溶解液が液出口Ｊに十分に供給されず、滅菌が不安定になり好ましくない。なお、隔壁Ｗは、複数設けてもよい。 Further, in order to reduce the inhalation of water-insoluble solids into the injection pump G through the liquid outlet J and to promote the inhalation of water-insoluble solids into the ejector through the liquid outlet K, It is preferable to provide a weir having a height of 5 cm or more continuous on the bottom of the dissolution liquid tank at a position where a line segment connecting at least two liquid outlets installed at the bottom of the dissolution liquid tank is divided. For example, as shown in FIG. 2, a weir W that divides the bottom of the solution tank C into two or more may be installed at a position where a line segment connecting the liquid outlet J and the liquid outlet K is divided. The height of the weir W is preferably set higher than 5 cm from the bottom surface of the solution tank C and lower than the installation position of the eye plate B. When the height of the weir W is set higher than the height of 5 cm from the bottom of the dissolution liquid tank C, the amount of water-insoluble solids sucked into the ejector H through the liquid outlet K increases and accumulates at the bottom of the dissolution liquid tank C. This is preferable because the water-insoluble solid content is remarkably reduced. On the other hand, if the height of the weir W is set higher than the position where the eye plate B is set, the solution is not sufficiently supplied to the liquid outlet J, and sterilization becomes unstable. A plurality of partition walls W may be provided.
また、目皿Ｂは、溶解液面に対し水平に設置してもよいが、固形塩素剤に含まれる水不溶固形分の薬室Ａからの排出を促すため、傾斜をつけて設置することもできる。目皿Ｂの設置角度は、溶解液面に対し水平（０度）〜４０度の範囲が好ましい。４０度を越える傾斜になると薬室Ａの容積が減るため好ましくなく、固形塩素剤の溶解性と水不溶固形分の排出効果の観点から１０〜２０度の範囲が特に好ましい。なお、傾斜の方向に制限はない。 Moreover, although the eye plate B may be installed horizontally with respect to the surface of the solution, it may be installed with an inclination in order to facilitate the discharge of the water-insoluble solid contained in the solid chlorine agent from the chamber A. it can. The installation angle of the eye plate B is preferably in the range of horizontal (0 degree) to 40 degrees with respect to the dissolved liquid surface. An inclination exceeding 40 degrees is not preferable because the volume of the chamber A is reduced, and the range of 10 to 20 degrees is particularly preferable from the viewpoint of the solubility of the solid chlorine agent and the discharge effect of water-insoluble solids. In addition, there is no restriction | limiting in the direction of inclination.
固形塩素剤の溶解液注入に、ポンプに加えエゼクターを併用することにより、特別な運転操作を必要とせず、容易に固形塩素剤の溶解と安定的な滅菌処理が実現できる。さらに、溶解液槽の清掃頻度の低減や注入ポンプの故障の低減による経済的効果は、エゼクターの設置費用を大きく上回る。 By using the ejector in addition to the pump for injecting the solution of the solid chlorine agent, it is possible to easily dissolve the solid chlorine agent and perform stable sterilization without requiring any special operation. Furthermore, the economic effect of reducing the frequency of cleaning the solution tank and reducing the failure of the injection pump greatly exceeds the installation cost of the ejector.
溶解液槽内に析出、沈殿するスケールや水溶性固形薬剤に含まれる水不溶固形分をエゼクターを介して効率的に溶解液槽外へ排出することにより、析出、沈殿したスケールや固形塩素剤に含まれる水不溶固形分の吸入によるポンプ故障や配管閉塞の防止や、溶解液槽内の清掃頻度の低減が可能となり、固形薬剤の溶解および滅菌処理が安定的に行われる。 By efficiently discharging the water-insoluble solids contained in the scale and water-soluble solid medicine in the dissolution tank to the outside of the dissolution tank through the ejector, the scale and solid chlorine agent deposited and precipitated are discharged. It is possible to prevent pump failure and piping blockage due to inhalation of contained water-insoluble solid content, and to reduce the frequency of cleaning in the solution tank, so that the solid drug can be dissolved and sterilized stably.
本発明を実施例および比較例により説明するが、本発明はこれらに限定されるものではない。 The present invention will be described with reference to examples and comparative examples, but the present invention is not limited to these examples.
実施例１
図２に示す形状の装置を用い、固形薬剤の溶解試験を行った。幅５００ｍｍ、奥行３００ｍｍ、高さ５５０ｍｍの塩化ビニル製の薬室Ａの底部に、水平に対し１０度斜め下方向に傾斜した目皿Ｂを設置し、その上に固形塩素剤として次亜塩素酸カルシウム組成物錠剤（トヨクロンファインＢＨ−１０）５．６ｋｇを不規則充填した。なお、外壁と目皿Ｂが接する位置は、溶解液槽の底面から１０５ｍｍとした。また、堰Ｗの高さは１２０ｍｍで、溶解液槽の側壁から３７０ｍｍの位置に奥行き３００ｍｍ長さで区切る形とした。注入ポンプ液出口Ｊとエゼクター液出口Ｋは、図２の正面図のそれぞれ近い外壁から５０ｍｍ、８０ｍｍの位置で、奥行きに対して中央部に設けた。注入ポンプＧは最大流量１５Ｌ／ｍｉｎのダイヤフラムポンプ、エゼクターＨは最大注入量２．５Ｌ／ｍｉｎのＭａｚｚｅｉ社製のＭｏｄｅｌ４８４Ｘを用いた。そして、フロート式液面調整器にて、液面が溶解液槽の底面から１５５ｍｍになるようにセットした。この装置に、水温５℃の処理水を流量６００Ｌ／ｈｒで処理水導入配管Ｌ１を通じて導入して、固形塩素剤の溶解を行った。注入ポンプＧの流量は４８０Ｌ／ｈｒであり、エゼクターＨの注入量は１２０Ｌ／ｈｒであった。その結果、固形塩素剤溶解液配管Ｌ５の有効塩素濃度は、１２０〜１６０ｍｇ／Ｌで安定した。４８ｈｒ運転後、装置を止めて溶解液槽底部に堆積した水不溶固形分を全量採取し、１１０℃で乾燥してその重量を測定したところ７５．１ｇであった。この量は、比較例１の水不溶固形分１１８．０ｇに比べて３６．４％少ないものであった。
Example 1
A solid drug dissolution test was performed using an apparatus having the shape shown in FIG. At the bottom of a vinyl chloride chamber A having a width of 500 mm, a depth of 300 mm, and a height of 550 mm, an eye plate B inclined obliquely downward by 10 degrees with respect to the horizontal is installed, and hypochlorous acid is used as a solid chlorine agent thereon. 5.6 kg of calcium composition tablets (Toyocron Fine BH-10) were irregularly filled. The position where the outer wall and the eye plate B contact was 105 mm from the bottom surface of the dissolution tank. Further, the height of the weir W was 120 mm, and it was divided into a depth of 300 mm at a position of 370 mm from the side wall of the solution tank. The injection pump liquid outlet J and the ejector liquid outlet K were provided in the center with respect to the depth at positions of 50 mm and 80 mm from the outer walls close to each other in the front view of FIG. The injection pump G used was a diaphragm pump with a maximum flow rate of 15 L / min, and the ejector H used Model 484X made by Mazzei with a maximum injection amount of 2.5 L / min. And it set so that a liquid level might be 155 mm from the bottom face of a solution tank with the float type liquid level adjuster. To this apparatus, treated water having a water temperature of 5 ° C. was introduced through the treated water introduction pipe L1 at a flow rate of 600 L / hr to dissolve the solid chlorine agent. The flow rate of the injection pump G was 480 L / hr, and the injection amount of the ejector H was 120 L / hr. As a result, the effective chlorine concentration of the solid chlorine agent solution pipe L5 was stabilized at 120 to 160 mg / L. After the operation for 48 hours, the apparatus was stopped and the entire amount of water-insoluble solid content deposited on the bottom of the solution tank was collected, dried at 110 ° C., and its weight was measured to be 75.1 g. This amount was 36.4% less than the water-insoluble solid content of Comparative Example 1 (118.0 g).
比較例１
エゼクターＨと堰Ｗを設置しない以外は、実施例１と同様の装置と方法で試験した。なお、この時の注入ポンプＧの流量は約６００Ｌ／ｈｒであった。その結果、４８ｈｒ運転後の溶解液槽底部に堆積した水不溶固形分量は、乾燥重量で１１８．０ｇであり、実施例１のそれに比べて１．６倍の量であった。
Comparative Example 1
Except that the ejector H and the weir W were not installed, the test was performed by the same apparatus and method as in Example 1. At this time, the flow rate of the injection pump G was about 600 L / hr. As a result, the water-insoluble solid content deposited at the bottom of the solution tank after 48 hours of operation was 118.0 g in terms of dry weight, which was 1.6 times that of Example 1.
実施例２
薬室Ａに固形塩素剤を１０ｋｇ充填した以外は、実施例１と同様の装置と方法で試験した。その結果、９６ｈｒ運転後の溶解液槽底部に堆積した水不溶固形分量は、乾燥重量で１２１．７ｇであり、比較例２のそれに比べて４２．０％少ないものであった。
Example 2
The test was performed by the same apparatus and method as in Example 1 except that the chamber A was filled with 10 kg of a solid chlorine agent. As a result, the amount of water-insoluble solid deposited on the bottom of the solution tank after 96 hours of operation was 121.7 g in terms of dry weight, which was 42.0% less than that in Comparative Example 2.
比較例２
エゼクターＨと堰Ｗを設置しない以外は、実施例２と同様の装置と方法で試験した。なお、この時の注入ポンプＧの流量は約６００Ｌ／ｈｒであった。その結果、９６ｈｒ運転後の溶解液槽底部に堆積した水不溶固形分量は、乾燥重量で２０９．８ｇであり、実施例２のそれに比べて１．７倍の量であった。
Comparative Example 2
Except that the ejector H and the weir W were not installed, the test was performed by the same apparatus and method as in Example 2. At this time, the flow rate of the injection pump G was about 600 L / hr. As a result, the water-insoluble solid content deposited on the bottom of the solution tank after 96 hours of operation was 209.8 g in terms of dry weight, which was 1.7 times that of Example 2.
実施例３
薬室Ａに固形塩素剤を５０ｋｇ充填した以外は、実施例１と同様の装置と方法で試験した。その結果、３６０ｈｒ運転後の溶解液槽底部に堆積した水不溶固形分量は、乾燥重量で４５８．９ｇであり、比較例３のそれに比べて５６．３％少ないものであった。
Example 3
The test was performed by the same apparatus and method as in Example 1 except that the chamber A was filled with 50 kg of a solid chlorine agent. As a result, the amount of water-insoluble solid deposited on the bottom of the solution tank after 360 hours of operation was 458.9 g in terms of dry weight, which was 56.3% less than that in Comparative Example 3.
比較例３
エゼクターＨと堰Ｗを設置しない以外は、実施例３と同様の装置と方法で試験した。なお、この時の注入ポンプＧの流量は約６００Ｌ／ｈｒであった。その結果、３６０ｈｒ運転後の溶解液槽底部に堆積した水不溶固形分量は、乾燥重量で１０５０．１ｇであり、実施例２のそれに比べて２．３倍の量であった。
Comparative Example 3
Except that the ejector H and the weir W were not installed, the test was performed using the same apparatus and method as in Example 3. At this time, the flow rate of the injection pump G was about 600 L / hr. As a result, the amount of water-insoluble solid deposited on the bottom of the solution tank after 360 hours of operation was 1050.1 g in terms of dry weight, which was 2.3 times that of Example 2.
実施例１乃至３および比較例１乃至３の結果より、本発明の効果が大きいことは明らかである。また、水量３００〜４００トンの標準的な大きさの２５ｍプールでは年間５００ｋｇ程度の固形塩素剤が使用されるが、本発明の実施例から溶解液槽底部に堆積する水不溶固形分量は、従来の装置と比較して大幅に低減されることが予想され、より大きな効果が期待される。 From the results of Examples 1 to 3 and Comparative Examples 1 to 3, it is clear that the effect of the present invention is great. Moreover, in a 25 m pool with a standard size of 300 to 400 tons of water, a solid chlorine agent of about 500 kg is used annually, but the amount of water insoluble solid deposited on the bottom of the solution tank from the examples of the present invention is conventionally This is expected to be greatly reduced compared to the above apparatus, and a greater effect is expected.
１ 固形薬剤の溶解滅菌装置の本体部
２ プール
３ 循環ポンプ
４ 濾過機
５ 処理水取込口
６ 処理水合流点
Ａ 薬室
Ｂ 目皿
Ｃ 溶解液槽
Ｄ フロート式定水位弁
Ｅ 液面調整室
Ｆ 流量計
Ｇ 注入ポンプ
Ｈ エゼクター
Ｊ 注入ポンプ液出口
Ｋ エゼクター液出口
Ｖ 取水弁
Ｗ 堰
Ｌ１ 処理水導入配管
Ｌ２ 注入ポンプ吸入配管
Ｌ３ エゼクター吸入配管
Ｌ４ 注入ポンプ吐出配管
Ｌ５ 固形塩素剤溶解液配管
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