JP2005052775A

JP2005052775A - Water circulation equipment

Info

Publication number: JP2005052775A
Application number: JP2003287810A
Authority: JP
Inventors: Zenichi Nishi; 善一西; Koichi Kudo; 浩一工藤; Yasuhiro Ebara; 康浩江原
Original assignee: Tohzai Chemical Industry Co Ltd; Suido Kiko Kaisha Ltd
Current assignee: Tohzai Chemical Industry Co Ltd; Suido Kiko Kaisha Ltd
Priority date: 2003-08-06
Filing date: 2003-08-06
Publication date: 2005-03-03

Abstract

<P>PROBLEM TO BE SOLVED: To provide water circulation equipment maintaining water in a water tank at water quality of low turbidity and high antiseptic effect. <P>SOLUTION: The water circulation equipment is provided with an inflow passage 4 allowing the water 2 in a water tank 1 to flow into a filter device 3, a return passage 5 for returning the water passed through the filter device to the water tank, and a hypochlorous acid feed part B capable of feeding hypochlorous acid to the circulation water of the return passage 5. The equipment is provided with a flocculant feed part A capable of feeding an iron silica-based inorganic polymer flocculant to the circulation water in the inflow passage. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、水槽の水を濾過装置に流入させる流入路と、前記濾過装置を通過した水を前記水槽に戻す戻し路と、前記戻し路の循環水に次亜塩素酸塩を供給可能な次亜塩素酸塩供給部とを設けてある水循環設備に関する。 The present invention provides an inflow path for allowing water in the water tank to flow into the filtration device, a return path for returning the water that has passed through the filtration device to the water tank, and a hypochlorite that can supply hypochlorite to the circulating water in the return path. The present invention relates to a water circulation facility provided with a chlorite supply section.

上記水循環設備は、例えば遊泳プールや浴槽などの水槽の水の水質を維持できるように、水槽と濾過装置とに亘る水循環路を設けて、濾過装置を通過した循環水に次亜塩素酸塩を供給して水槽に戻すように構成してある。
従来の水循環設備では、流入路の循環水を、凝集剤を供給せずに、濾過装置に流入させている（周知技術であり、先行技術文献情報を記載できない) 。 The water circulation facility is provided with a water circulation path extending between the water tank and the filtration device so that the water quality of the water tank such as a swimming pool and a bathtub can be maintained, and hypochlorite is added to the circulating water that has passed through the filtration device. It is configured to be supplied and returned to the water tank.
In the conventional water circulation facility, the circulating water in the inflow path is allowed to flow into the filtration device without supplying the flocculant (it is a well-known technique and information on prior art documents cannot be described).

このため、循環水中の濁質分を濾過装置で効率良く捕捉できるように、流入路の循環水に凝集剤を供給することが考えられるが、凝集剤として、例えば浄水処理などに使用されているポリ塩化アルミニウム凝集剤（以下、ＰＡＣという) を供給する場合は、神経系疾患の原因と考えられているアルミニウムが残存し易いだけでなく、凝集効果を高めて濁度を低くするためには、循環水のｐＨ値を７．２〜７．４程度の高い値に調整する必要があるのに対して、次亜塩素酸塩による殺菌効果はｐＨ値が高くなるほど低下するので、次亜塩素酸塩による殺菌効果が低下して酸化還元電位が低くなる欠点がある。
本発明は上記実情に鑑みてなされたものであって、水槽の水を、濁度が低く、殺菌効果も高い水質に維持できるようにすることを目的とする。 For this reason, it is conceivable to supply a flocculant to the circulating water in the inflow channel so that the turbidity in the circulating water can be efficiently captured by the filtration device, but it is used as a flocculant, for example, for water purification treatment. When supplying a polyaluminum chloride flocculant (hereinafter referred to as PAC), not only does aluminum, which is considered to be a cause of nervous system diseases, remain, but in order to increase the agglomeration effect and lower turbidity, While it is necessary to adjust the pH value of the circulating water to a high value of about 7.2 to 7.4, the bactericidal effect of hypochlorite decreases as the pH value increases, so hypochlorous acid. There is a drawback that the bactericidal effect due to the salt is lowered and the redox potential is lowered.
This invention is made | formed in view of the said situation, Comprising: It aims at enabling it to maintain the water quality of the water of a water tank with a low turbidity and a high bactericidal effect.

本発明の第１特徴構成は、水槽の水を濾過装置に流入させる流入路と、前記濾過装置を通過した水を前記水槽に戻す戻し路と、前記戻し路の循環水に次亜塩素酸塩を供給可能な次亜塩素酸塩供給部とを設けてある水循環設備であって、前記流入路の循環水に鉄シリカ系無機高分子凝集剤を供給可能な凝集剤供給部を設けてある点にある。 The first characteristic configuration of the present invention includes an inflow path for allowing water in the water tank to flow into the filtration device, a return path for returning the water that has passed through the filtration device to the water tank, and hypochlorite in the circulating water in the return path. And a hypochlorite supply unit capable of supplying a coagulant supply unit capable of supplying an iron silica-based inorganic polymer flocculant to the circulating water of the inflow path. It is in.

〔作用及び効果〕
鉄シリカ系無機高分子凝集剤（以下、ＰＳＩという) による凝集効果を高めて濁度を低くするためには、循環水のｐＨ値を、ＰＡＣによる凝集効果を高める場合に比べて低くて、次亜塩素酸塩による殺菌効果が低下しにくい程度に調整すれば良いことに着目して、流入路の循環水にＰＳＩを供給可能な凝集剤供給部を設けてあるので、流入路の循環水にＰＳＩを供給することによって、凝集剤による凝集効果も次亜塩素酸塩による殺菌効果も高めることができるようになり、水槽の水を、濁度が低く、殺菌効果も高い水質に維持できる。
その上、前記循環水にＰＳＩを供給することにより、酸化還元電位がＰＳＩ投入前よりも上昇して、次亜塩素酸塩による殺菌効果以上の殺菌効果が向上する。 [Action and effect]
In order to increase the agglomeration effect by the iron silica-based inorganic polymer flocculant (hereinafter referred to as PSI) and reduce the turbidity, the pH value of the circulating water is set lower than that for increasing the agglomeration effect by PAC. Focusing on the fact that the sterilization effect by chlorite should be adjusted so that it is difficult to decrease, a flocculant supply unit capable of supplying PSI to the circulating water in the inflow channel is provided. By supplying PSI, the aggregating effect by the flocculant and the sterilizing effect by the hypochlorite can be enhanced, and the water in the aquarium can be maintained at a water quality with low turbidity and high sterilizing effect.
In addition, by supplying PSI to the circulating water, the oxidation-reduction potential is increased as compared with that before the PSI is charged, and the sterilization effect more than the sterilization effect by hypochlorite is improved.

本発明の第２特徴構成は、前記水槽が浴槽又は遊泳プールである点にある。 The second characteristic configuration of the present invention is that the water tank is a bathtub or a swimming pool.

〔作用及び効果〕
浴槽又は遊泳プールの水を、神経系疾患の原因と考えられているアルミニウムが残存しにくい状態で、濁度が低く、殺菌効果も高い水質に維持できる。 [Action and effect]
The water in the bathtub or swimming pool can be maintained in water quality with low turbidity and high bactericidal effect in a state where aluminum, which is considered to be the cause of nervous system diseases, hardly remains.

本発明の第３特徴構成は、前記次亜塩素酸塩供給部に次亜塩素酸塩供給装置を設け、前記凝集剤供給部には鉄シリカ系無機高分子凝集剤供給装置を設けてある点にある。 A third characteristic configuration of the present invention is that a hypochlorite supply unit is provided in the hypochlorite supply unit, and an iron silica-based inorganic polymer coagulant supply device is provided in the coagulant supply unit. It is in.

〔作用及び効果〕
次亜塩素酸塩供給部に次亜塩素酸塩供給装置を設け、凝集剤供給部には鉄シリカ系無機高分子凝集剤供給装置を設けてあるので、次亜塩素酸塩やＰＳＩを簡便に供給できる。 [Action and effect]
The hypochlorite supply unit is equipped with a hypochlorite supply unit, and the coagulant supply unit is equipped with an iron silica-based inorganic polymer flocculant supply device, so hypochlorite and PSI can be easily used. Can supply.

以下に本発明の実施の形態を図面に基づいて説明する。
図１は、遊泳プール（水槽の一例) １のプール水２を濾過装置３に流入させる流入管路４と、濾過装置３を通過したプール水２を遊泳プール１に戻す戻し管路５とを設け、流入管路４に設けてあるポンプＰ１の駆動で、遊泳プール１と濾過装置３とに亘ってプール水２を循環させる水循環設備を示す。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a swimming pool (an example of an aquarium) having an inflow line 4 for allowing the pool water 2 of 1 to flow into the filtration device 3 and a return line 5 for returning the pool water 2 that has passed through the filtration device 3 to the swimming pool 1. A water circulation facility that circulates the pool water 2 across the swimming pool 1 and the filtration device 3 by driving the pump P <b> 1 provided in the inflow conduit 4 is shown.

そして、ＰＳＩの貯留タンク６ａとポンプＰ６とを備えたＰＳＩ注入（供給) 装置６を流入管路４に接続して、ポンプＰ６の駆動で流入管路４の循環水にＰＳＩを供給可能な凝集剤供給部Ａを設け、次亜塩素酸ナトリウムなどの次亜塩素酸塩の貯留タンク７ａとポンプＰ７とを備えた次亜塩素酸塩注入（供給) 装置７を戻し管路５に接続して、ポンプＰ７の駆動で戻し管路５の循環水に次亜塩素酸塩を供給可能な次亜塩素酸塩供給部Ｂを設けてある。 Then, a PSI injection (supply) device 6 having a PSI storage tank 6a and a pump P6 is connected to the inflow conduit 4, and the PSI can be supplied to the circulating water in the inflow conduit 4 by driving the pump P6. A hypochlorite injection (supply) device 7 provided with an agent supply section A and provided with a hypochlorite storage tank 7a such as sodium hypochlorite and a pump P7 is connected to the return line 5. A hypochlorite supply section B is provided that can supply hypochlorite to the circulating water in the return line 5 by driving the pump P7.

また、硫酸などの殺菌助剤（ｐＨ調整剤) の貯留タンク８ａとポンプＰ８とを備えた殺菌助剤注入装置８を次亜塩素酸塩供給部Ｂよりも下流側の戻し管路５に接続して、ポンプＰ８の駆動で戻し管路５に注入した殺菌助剤で循環水のｐＨ値を調整できるように構成し、濾過装置３と次亜塩素酸塩注入装置７との間の戻し管路５に、濾過装置３の出口側の循環水を採水可能なコック９を設けてある。 Further, a sterilization aid injection device 8 provided with a storage tank 8a for a sterilization aid (pH adjuster) such as sulfuric acid and a pump P8 is connected to the return line 5 downstream of the hypochlorite supply section B. Then, it is configured so that the pH value of the circulating water can be adjusted with the sterilization aid injected into the return line 5 by driving the pump P8, and the return pipe between the filtration device 3 and the hypochlorite injection device 7 The passage 5 is provided with a cock 9 capable of collecting circulating water on the outlet side of the filtration device 3.

〔その他の実施形態〕
１．本発明による水循環設備は、人が容器から次亜塩素酸塩やその溶液を取り出して戻し路の循環水に投入可能或いは注入可能な次亜塩素酸塩供給部を設けてあっても良い。
２．本発明による水循環設備は、人が容器から鉄シリカ系無機高分子凝集剤やその溶液を取り出して流入路の循環水に投入可能或いは注入可能な凝集剤供給部を設けてあっても良い。
３．本発明による水循環設備は、流入路や戻し路を、暗渠や明渠で構成しても良い。
４．本発明による水循環設備は、浴槽と濾過装置とに亘って浴槽水を循環させる水循環設備であっても良い。 [Other Embodiments]
1. The water circulation facility according to the present invention may be provided with a hypochlorite supply section that allows a person to take out hypochlorite or a solution thereof from a container and put it into the circulating water of the return path or inject it.
2. The water circulation facility according to the present invention may be provided with a flocculant supply unit that allows a person to take out the iron silica-based inorganic polymer flocculant and its solution from the container and put it into the circulating water in the inflow passage.
3. In the water circulation facility according to the present invention, the inflow path and the return path may be formed of underdrains or alums.
4). The water circulation facility according to the present invention may be a water circulation facility that circulates bathtub water across the bathtub and the filtering device.

前記ＰＳＩ注入装置６に代えて、ＰＡＣを凝集剤として注入可能なＰＡＣ注入装置（図外) を設けてある水循環設備（比較例) と、ＰＳＩを凝集剤として注入可能なＰＳＩ注入装置６を設けてある本発明による水循環設備とについて、濾過装置３の出口側における水質を比較した。 In place of the PSI injection device 6, a water circulation facility (comparative example) provided with a PAC injection device (not shown) capable of injecting PAC as a flocculant and a PSI injection device 6 capable of injection using PSI as a flocculant are provided. The water quality on the outlet side of the filtration device 3 was compared with the water circulation facility according to the present invention.

尚、次亜塩素酸塩としては次亜塩素酸ナトリウムの１２％水溶液を使用し、殺菌助剤としては硫酸の１０％水溶液を使用し、濾過装置３は、デアイロンＮ−２（東西化学産業株式会社製）を濾過材として使用した。 In addition, 12% aqueous solution of sodium hypochlorite is used as hypochlorite, 10% aqueous solution of sulfuric acid is used as sterilization aid, and the filtration device 3 is Deiron N-2 (Tozai Chemical Industry Co., Ltd.) Company) was used as a filter medium.

流入管路４に凝集剤を注入しない状態での濾過装置３の出口側での水質を［表１］に示す。 [Table 1] shows the water quality on the outlet side of the filtration device 3 in a state where the flocculant is not injected into the inflow conduit 4.

流入管路４にＰＡＣ注入装置を設けてある水循環設備（比較例) について、循環水のｐＨ値を６．８〜７．８に段階的に調整して、ＰＡＣ（Ａｌ₂Ｏ₃１０％品) を循環水流量に対して０．５ｍｇ／リットルになるように連続添加した試験における濾過装置３の出口側における水質を［表２］に示す。 For a water circulation facility (comparative example) in which a PAC injection device is provided in the inflow conduit 4, the pH value of the circulating water is adjusted stepwise from 6.8 to 7.8 to obtain a PAC (Al ₂ O ₃ 10% product). Table 2 shows the water quality on the outlet side of the filtration device 3 in the test in which) was continuously added so as to be 0.5 mg / liter with respect to the circulating water flow rate.

［表２］から分かるように、ｐＨ値が７．０以下の場合、ＰＡＣが凝集を開始するためのアルカリ分が少なくて凝集効果が低下し、処理水中にアルミニウムが残存する結果となった。
逆に、ｐＨ値が高くても凝集効果が低下して、アルミニウムが残存する結果となり、ＰＡＣを用いる場合、ｐＨ値を７．２〜７．４程度に調整する必要があることが分かる。 As can be seen from [Table 2], when the pH value was 7.0 or less, the alkali content for starting flocculation of the PAC was small and the flocculation effect was lowered, resulting in aluminum remaining in the treated water.
Conversely, even if the pH value is high, the coagulation effect is reduced and aluminum remains, and it is understood that when PAC is used, the pH value needs to be adjusted to about 7.2 to 7.4.

前記ＰＳＩ注入装置６を設けてある本発明による水循環設備について、循環水のｐＨ値を６．８〜７．８に段階的に調整して、ＰＳＩ（水道機工株式会社製ＰＳＩ−０５０（モル比Ｆｅ：Ｓｉ＝１：０．５，鉄含量２２ｇ／リットル))を循環水流量に対して１．６ｍｇ／リットルになるように連続添加した試験における濾過装置３の出口側における水質を［表３］に示す。 For the water circulation facility according to the present invention in which the PSI injection device 6 is provided, the pH value of the circulating water is adjusted stepwise to 6.8 to 7.8, and PSI (PSI-050 manufactured by Seiko Kiko Co., Ltd. (molar ratio)). Fe: Si = 1: 0.5, iron content 22 g / liter)) was continuously added so as to be 1.6 mg / liter with respect to the circulating water flow rate. ].

［表３］から分かるように、ｐＨ値が高い方が処理水濁度は高くなって、ｐＨ６．８〜７．０程度が最適であり、また、ｐＨ値が高い場合、処理水中の鉄の残存量が増加する傾向にある結果となった。 As can be seen from [Table 3], the higher the pH value, the higher the treated water turbidity, and the optimum value is about pH 6.8 to 7.0. As a result, the residual amount tended to increase.

塩素系薬剤による殺菌処理を行う場合、ｐＨ値が低い方が効果があり、ＰＳＩ（ＰＳＩ−０５０) を用いた場合、凝集効果だけでなく、酸化還元電位からも分かるように、殺菌効果も向上すると考えられる。 When performing sterilization treatment with chlorinated chemicals, the lower pH value is more effective. When PSI (PSI-050) is used, the sterilization effect is improved as can be seen not only from the aggregation effect but also from the redox potential. I think that.

以上の試験結果により、凝集剤にＰＡＣを用いるよりも、ＰＳＩ（ＰＳＩ−０５０) を用いた方が濾過装置３の出口側における濁度が低下することが分かる。 From the above test results, it can be seen that the turbidity on the outlet side of the filtration device 3 is lower when PSI (PSI-050) is used than when PAC is used as the flocculant.

また、同じｐＨ値で比較した場合、ＰＳＩ（ＰＳＩ−０５０) を用いた方が全てのｐＨ値において結合残留塩素濃度がＰＡＣを用いるよりも低減しており、次亜塩素酸により有機物が酸化分解された結果と考えられる。 In addition, when compared at the same pH value, using PSI (PSI-050) reduces the residual residual chlorine concentration at all pH values than using PAC, and organic substances are decomposed by hypochlorous acid. Is considered to be the result.

酸化還元電位を比較した場合も、全てのｐＨ値においてＰＳＩ（ＰＳＩ−０５０) を用いた方がＰＡＣを用いるよりも高く維持できており、処理水濁度の低下は、濁質分の凝集効果が向上しただけでなく、次亜塩素酸による有機物の酸化分解反応が促進された結果と考えられる。 Even when the redox potentials were compared, the use of PSI (PSI-050) at all pH values could be maintained higher than the use of PAC. This is thought to be a result of the accelerated oxidative decomposition reaction of organic substances by hypochlorous acid.

従って、凝集剤にＰＳＩ（ＰＳＩ−０５０) を採用することは、神経系疾患の原因と考えられているアルミニウムを低減させるだけでなく、濁質分の除去効果、及び、プール水中の溶存物質の酸化分解を向上することができ、より衛生的で安全な遊泳プール水処理が実現できる。 Therefore, the use of PSI (PSI-050) as a flocculant not only reduces aluminum, which is considered to be a cause of nervous system diseases, but also removes turbidity, and dissolves substances in pool water. Oxidative degradation can be improved, and more hygienic and safe swimming pool water treatment can be realized.

水循環設備の概略図Schematic diagram of water circulation facility

符号の説明Explanation of symbols

１水槽
２水
３濾過装置
４流入路
５戻し路
６鉄シリカ系無機高分子凝集剤供給装置
７次亜塩素酸塩供給装置
Ａ凝集剤供給部
Ｂ次亜塩素酸塩供給部 DESCRIPTION OF SYMBOLS 1 Water tank 2 Water 3 Filtration apparatus 4 Inflow path 5 Return path 6 Iron silica type inorganic polymer flocculant supply apparatus 7 Hypochlorite supply apparatus A Coagulant supply part B Hypochlorite supply part

Claims

水槽の水を濾過装置に流入させる流入路と、前記濾過装置を通過した水を前記水槽に戻す戻し路と、前記戻し路の循環水に次亜塩素酸塩を供給可能な次亜塩素酸塩供給部とを設けてある水循環設備であって、
前記流入路の循環水に鉄シリカ系無機高分子凝集剤を供給可能な凝集剤供給部を設けてある水循環設備。 An inflow path for allowing water in the water tank to flow into the filtration device, a return path for returning the water that has passed through the filtration device to the water tank, and hypochlorite capable of supplying hypochlorite to the circulating water in the return path A water circulation facility provided with a supply unit,
A water circulation facility in which a flocculant supply unit capable of supplying an iron silica-based inorganic polymer flocculant to the circulating water in the inflow path is provided.

前記水槽が浴槽又は遊泳プールである請求項１記載の水循環設備。 The water circulation facility according to claim 1, wherein the water tank is a bathtub or a swimming pool.

前記次亜塩素酸塩供給部に次亜塩素酸塩供給装置を設け、前記凝集剤供給部には鉄シリカ系無機高分子凝集剤供給装置を設けてある請求項１又は２記載の水循環設備。 The water circulation facility according to claim 1 or 2, wherein a hypochlorite supply device is provided in the hypochlorite supply portion, and an iron silica-based inorganic polymer flocculant supply device is provided in the flocculant supply portion.