JPH11244871A - Treatment of manganese-containing water and device therefor - Google Patents
Treatment of manganese-containing water and device thereforInfo
- Publication number
- JPH11244871A JPH11244871A JP6038498A JP6038498A JPH11244871A JP H11244871 A JPH11244871 A JP H11244871A JP 6038498 A JP6038498 A JP 6038498A JP 6038498 A JP6038498 A JP 6038498A JP H11244871 A JPH11244871 A JP H11244871A
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- water
- treated
- manganese
- fluidized bed
- tank
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、マンガン含有水の
処理に係り、特に、用水、工業排水、及び上水汚泥処理
排水等の高濃度の溶解性マンガンを含む水の処理方法及
び装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the treatment of manganese-containing water, and more particularly to a method and an apparatus for treating water containing a high concentration of soluble manganese, such as service water, industrial effluent, and treated sewage sludge.
【０００２】[0002]
【従来の技術】流動床によるマンガン除去方法について
は、次の点が公知である。即ち、マンガンは中性付近の
水中において、２価態の場合はＭｎ（ＨＣＯ3 ）やＭｎ
ＳＯ4 、４価態の場合はＭｎＯ2 ・ｍＨ2 Ｏの形態で存
在する。この場合、晶析除去の対象となるのはイオン状
である２価態のマンガンである。２価態のマンガンは、
炭酸イオンと（１）式のように反応し炭酸マンガンとな
る。 Ｍｎ2+＋ＨＣＯ3 - ＋ＯＨ- →ＭｎＣＯ3 ↓＋Ｈ2 Ｏ ・・・（１） 被処理水中の炭酸マンガンは、ｐＨの上昇に従って溶解
度が減少し、準安定状態を経て結晶化する。この時、準
安定状態の炭酸マンガンと晶析用媒体が接触すると、媒
体表面に炭酸マンガンが晶析する。このとき、被処理水
のｐＨが低いと晶析が起こらず、ｐＨが高すぎると、炭
酸マンガンよりも水酸化マンガンが多く析出するため、
ｐＨ制御が重要である。2. Description of the Related Art The following points are known for a method of removing manganese by a fluidized bed. That is, manganese is dissolved in water near neutrality when it is in a divalent state, such as Mn (HCO 3 ) or Mn.
In the case of SO 4 and tetravalent, it exists in the form of MnO 2 · mH 2 O. In this case, the target of crystallization removal is ionic divalent manganese. Divalent manganese is
It reacts with carbonate ions as in equation (1) to form manganese carbonate. Mn 2+ + HCO 3 − + OH − → MnCO 3 ↓ + H 2 O (1) Manganese carbonate in the water to be treated decreases in solubility as the pH increases, and crystallizes through a metastable state. At this time, when manganese carbonate in a metastable state contacts the crystallization medium, manganese carbonate crystallizes on the surface of the medium. At this time, crystallization does not occur when the pH of the water to be treated is low, and when the pH is too high, more manganese hydroxide is precipitated than manganese carbonate.
pH control is important.
【０００３】この流動床によるマンガン除去方法とし
て、特開平８−２９５２５０号公報があり、そのフロー
シートを図３に示す。図３で示されるマンガン除去方法
は、マンガン砂を流動媒体とする支持床の無い流動床
に、炭酸イオンを含有した水又は炭酸イオンを添加した
水を、上向流で通水するとともに、流動床の流入口近辺
あるいは流動床内にアルカリ剤を注入し、流動床内の処
理水ｐＨを８〜１０に調節することにより、前記水中の
溶解性マンガンを炭酸マンガンとして晶析除去するもの
である。しかし、上記の方法では被処理水のｐＨ変動が
大きい場合、その制御が難しく、被処理水のマンガン濃
度が高い場合、マンガンの準安定状態はより短時間とな
り、水酸化マンガンが多く析出するという問題点があっ
た。As a method for removing manganese using a fluidized bed, there is JP-A-8-295250, and the flow sheet is shown in FIG. The manganese removal method shown in FIG. 3 is a method in which water containing carbonate ions or water to which carbonate ions are added is passed in an upward flow through a fluidized bed having no supporting bed using manganese sand as a fluidized medium. By injecting an alkaline agent near the inlet of the bed or into the fluidized bed and adjusting the pH of the treated water in the fluidized bed to 8 to 10, the soluble manganese in the water is crystallized and removed as manganese carbonate. . However, in the above method, when the pH fluctuation of the water to be treated is large, it is difficult to control the pH, and when the manganese concentration of the water to be treated is high, the metastable state of manganese is shorter and more manganese hydroxide is precipitated. There was a problem.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記従来技
術に鑑み、被処理水のｐＨ変動に対して容易に対処で
き、マンガン濃度の上昇に対しても水酸化マンガンの生
成を抑制できるマンガン含有水の処理方法及び装置を提
供することを課題とする。DISCLOSURE OF THE INVENTION In view of the above-mentioned prior art, the present invention provides a manganese hydroxide which can easily cope with pH fluctuations of the water to be treated and can suppress the production of manganese hydroxide even when the manganese concentration increases. It is an object to provide a method and an apparatus for treating contained water.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、マンガン砂を流動媒体とする支持床の
無い流動床反応槽に、炭酸イオンを含む被処理水を槽底
部から上向流で通水するとともに、反応槽底部の被処理
水流入口近辺及び／又は流動床内にアルカリ剤を注入
し、流動床内の処理水ｐＨを８〜１０に調節することに
より、前記水中の溶解性マンガンを晶析除去するマンガ
ン含有水の処理方法において、前記処理水の所要量を被
処理水に導入し、循環使用することとしたものである。
また、本発明では、マンガン砂を流動媒体とする支持床
の無い流動床反応槽と、該槽底部に設けた炭酸イオンを
含む被処理水を流入する流入口及び槽上部に設けた処理
水流出口と、流動床内の処理水ｐＨを８〜１０に調節す
る槽底部の被処理水流入口近辺及び／又は流動床内に設
けたアルカリ剤注入口とを有する溶解性マンガンを晶析
除去するマンガン含有水の処理装置において、前記処理
水の所要量を循環するための処理水流出口と被処理水流
入口を接続する循環通路を設けることとしたものであ
る。前記処理において、処理水の循環は、循環通路に沈
殿槽を設け、該槽の上澄水の一部を用いるのが良い。In order to solve the above-mentioned problems, according to the present invention, water to be treated containing carbonate ions is supplied from a bottom of a fluidized bed reactor having a manganese sand as a fluidized medium without a support bed. While flowing countercurrent, an alkaline agent is injected into the vicinity of the inlet of the water to be treated at the bottom of the reaction tank and / or into the fluidized bed, and the pH of the treated water in the fluidized bed is adjusted to 8 to 10 so that In the method for treating manganese-containing water for removing soluble manganese by crystallization, a required amount of the treated water is introduced into the water to be treated and is recycled.
Further, in the present invention, a fluidized bed reactor having no support bed using manganese sand as a fluid medium, an inflow port for injecting water to be treated containing carbonate ions provided at the bottom of the vessel, and a treated water outlet provided at an upper portion of the vessel are provided. A manganese-containing material for crystallization-removing soluble manganese having a treatment water pH in the fluidized bed at around 8 to 10 near the treated water inlet at the bottom of the tank and / or an alkali agent inlet provided in the fluidized bed; In the water treatment apparatus, a circulation passage connecting the treated water outlet and the treated water inlet for circulating a required amount of the treated water is provided. In the treatment, the treatment water is preferably circulated by providing a settling tank in the circulation passage and using a part of the supernatant water of the tank.
【０００６】[0006]
【発明の実施の形態】本発明によれば、流動床内の処理
水中に設けたｐＨ測定器により、アルカリ剤供給ポンプ
の吐出量を調整し、処理水の任意の量を循環使用してお
り、被処理水のｐＨ変動に対して対応可能となり、被処
理水のマンガン濃度の上昇に対しても循環水の希釈効果
によりマンガンの晶析速度を調節でき、水酸化マンガン
の析出を抑制することができる。次に、本発明を図面を
用いて詳細に説明する。図１及び図２に本発明の処理装
置の概略構成図の一例を示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, the discharge amount of an alkaline agent supply pump is adjusted by a pH meter provided in treated water in a fluidized bed, and an arbitrary amount of treated water is circulated. , It can respond to the pH fluctuation of the water to be treated, and even if the manganese concentration of the water to be treated increases, the crystallization rate of manganese can be adjusted by the effect of dilution of the circulating water to suppress the precipitation of manganese hydroxide. Can be. Next, the present invention will be described in detail with reference to the drawings. 1 and 2 show an example of a schematic configuration diagram of a processing apparatus of the present invention.
【０００７】図１に示す装置は、支持床を有さずマンガ
ン砂の流動媒体２を保持し、流入口１４近辺及び鉛直方
向に複数箇所のアルカリ剤注入口１６を備えた流動床反
応槽１と、流動床内の処理水中に配備されたｐＨ測定器
８とを少なくとも配備し、該ｐＨ測定器８の出力信号に
よりアルカリ剤供給ポンプ６の吐出量を加減するもので
ある。また、同時に被処理水（原水）を供給するための
原水ポンプ３、原水流入管４、停止時に晶析用媒体の逆
流を防止するための逆止弁５、アルカリ剤を供給するた
めのアルカリ剤槽７、処理水を排出するための処理水管
９、処理水の一部を循環するための循環ポンプ１０、処
理水循環用配管１１及び媒体排出管１３を適宜備えてな
る。また、原水ポンプ３と循環ポンプ１０の合計量を、
一定に調節する制御機構を備えても良い。The apparatus shown in FIG. 1 has a fluidized bed reactor 1 having no supporting bed and holding a manganese sand flowing medium 2 and having a plurality of alkali agent inlets 16 in the vicinity of an inlet 14 and vertically. And at least a pH meter 8 provided in the treated water in the fluidized bed, and the output of the alkaline agent supply pump 6 is adjusted according to the output signal of the pH meter 8. Also, a raw water pump 3, a raw water inflow pipe 4 for simultaneously supplying the water to be treated (raw water), a check valve 5 for preventing a back flow of the crystallization medium when the raw water is stopped, and an alkaline agent for supplying an alkaline agent. A tank 7, a treated water pipe 9 for discharging treated water, a circulation pump 10 for circulating a part of treated water, a treated water circulation pipe 11, and a medium discharge pipe 13 are appropriately provided. Also, the total amount of the raw water pump 3 and the circulation pump 10 is
A control mechanism for constant adjustment may be provided.
【０００８】図２に示す装置は、図１に示す装置の処理
水循環用配管の途中に、沈殿槽１２を備えたものであ
る。流動床反応槽からの流出水は、沈殿槽の下部配管よ
り流入し、上部配管（処理水管９）から上澄水が処理水
として流出する。流動床反応槽からの流出水に含まれる
懸濁物質は、前記槽で沈降分離され上澄水の任意の量が
流動床反応槽に循環される。次に、本発明を各構成要件
ごとに説明する。本発明で用いる炭酸マンガンの晶析用
媒体であるマンガン砂としては、マンガン砂そのもの以
外に、粒径０．１〜５．０ｍｍの粒状物質を使用するこ
とができる。粒状物質としては、砂、アンスラサイト、
活性炭、炭化物、樹脂等が使用できる。粒状物質の材
質、粒径、形状、表面上態、充填密度等は、処理装置の
形状、被処理水の性質に合わせて選定することができ
る。The apparatus shown in FIG. 2 is provided with a sedimentation tank 12 in the treatment water circulation pipe of the apparatus shown in FIG. The effluent from the fluidized bed reaction tank flows in from the lower pipe of the sedimentation tank, and the supernatant water flows out from the upper pipe (treatment water pipe 9) as treated water. Suspended substances contained in the effluent from the fluidized bed reactor are settled and separated in the vessel, and an arbitrary amount of the supernatant water is circulated to the fluidized bed reactor. Next, the present invention will be described for each component. As the manganese sand as the manganese carbonate crystallization medium used in the present invention, a granular substance having a particle size of 0.1 to 5.0 mm can be used in addition to the manganese sand itself. Granular substances include sand, anthracite,
Activated carbon, carbide, resin and the like can be used. The material, particle size, shape, surface state, packing density, and the like of the granular substance can be selected according to the shape of the treatment apparatus and the properties of the water to be treated.
【０００９】また、マンガン晶析反応を早期に安定化さ
せるために、炭酸マンガン晶析用媒体として、マンガン
砂やマンガンを付着させた上記媒体や電解二酸化マンガ
ンのような金属マンガンの原料としたものを使用しても
良い。粒状物質表面にマンガンを付着させるには、過マ
ンガン酸カリウム水溶液や過飽和の炭酸マンガン水溶液
を噴霧したり、浸漬させる方法などがある。また、粒状
物質を流動床反応槽１に充填し、マンガンを含む水溶液
を通水しても良い。晶析用媒体の流動床反応槽１の充填
槽高は１〜３ｍが好ましく、被処理水の水質、通水速
度、目標の処理水質により、任意の高さに充填する。Further, in order to stabilize the manganese crystallization reaction at an early stage, a manganese carbonate crystallization medium is used as the manganese sand or manganese-adhered medium or a raw material of metal manganese such as electrolytic manganese dioxide. May be used. In order to attach manganese to the surface of the granular material, there is a method of spraying or dipping an aqueous solution of potassium permanganate or an aqueous solution of supersaturated manganese carbonate. Alternatively, the granular material may be filled in the fluidized bed reactor 1 and an aqueous solution containing manganese may be passed through. The filling tank height of the fluidized bed reaction tank 1 for the crystallization medium is preferably 1 to 3 m, and the crystallization medium is filled to an arbitrary height depending on the quality of the water to be treated, the water flow rate, and the target treatment water quality.
【００１０】本発明で用いる図１及び図２の流動床反応
槽は、通常洗浄操作を必要としない。しかし、被処理水
に有機性のＳＳや当該媒体を汚染するもの等が含まれる
場合、洗浄操作を行っても良い。また、支持床を敢えて
設けていないので、支持床の閉塞等に伴う媒体の流動異
常が無く、被処理水の導入方向、流動床反応槽の底部構
造の最適化により、効果的な媒体の流動、ひいては効果
的なマンガン晶析反応を行うことができる。さらに、炭
酸マンガン晶析反応速度が低下した場合、肥厚した流動
床下部の媒体を下端ドレーンより選択的に排出後、新し
い媒体を流動床反応槽上部より追加することができる。
次に、本発明のｐＨ調節用のアルカリ剤としては、水酸
化ナトリウム、炭酸ナトリウム等が使用できる。The fluidized bed reactor of FIGS. 1 and 2 used in the present invention usually does not require a washing operation. However, when the water to be treated contains an organic SS or a substance that contaminates the medium, a cleaning operation may be performed. In addition, since the support bed is not intentionally provided, there is no medium flow abnormality due to blockage of the support bed, etc., and effective medium flow is achieved by optimizing the introduction direction of the water to be treated and the bottom structure of the fluidized bed reaction tank. Thus, an effective manganese crystallization reaction can be performed. Further, when the manganese carbonate crystallization reaction rate is reduced, a medium in the lower part of the thickened fluidized bed can be selectively discharged from the lower drain, and a new medium can be added from the upper part of the fluidized bed reactor.
Next, as the pH-adjusting alkaline agent of the present invention, sodium hydroxide, sodium carbonate and the like can be used.
【００１１】アルカリ剤注入口は、反応槽底部の被処理
水の流入口近辺及び流動床に複数箇所設ける。アルカリ
剤注入口の高さ方向の位置は、流動床下部の原水流入管
付近と、そこから０．５ｍ置きに１カ所以上設置するこ
とが好ましい。流動床反応槽の被処理水の流入口近辺に
アルカリ剤注入口を設ける場合は、被処理水と炭酸マン
ガン流動媒体とが、２分以内に接触する位置が好まし
い。また、水平位置方向の注入点は、反応槽壁面と各注
入点の間、及び各注入点同志の間の距離が１００ｍｍ以
下であることが好ましい。流動床に１カ所のみ、アルカ
リ剤を注入する場合は、反応槽底部又は反応槽底部の被
処理水流入口近辺が好ましい。A plurality of alkali agent injection ports are provided near the inlet of the water to be treated at the bottom of the reaction tank and in the fluidized bed. It is preferable that the height of the alkali agent injection port be set at one or more locations near the raw water inflow pipe at the lower part of the fluidized bed and every 0.5 m therefrom. When the alkali agent inlet is provided near the inlet of the water to be treated in the fluidized bed reaction tank, a position where the water to be treated and the manganese carbonate fluid medium are in contact within 2 minutes is preferable. Further, as for the injection points in the horizontal position direction, it is preferable that the distance between the wall surface of the reaction tank and each injection point and the distance between each injection point are 100 mm or less. When only one alkali agent is injected into the fluidized bed, the bottom of the reaction tank or the vicinity of the inlet of the water to be treated at the bottom of the reaction tank is preferable.
【００１２】本発明で処理できる被処理水は、マンガン
イオン１ｍｇに対して１．１ｍｇ以上、好ましくは２．
２ｍｇ以上の炭酸イオンを含有する必要があり、これ以
下の場合は、炭酸イオンを添加する必要がある。炭酸イ
オンの添加は炭酸水素ナトリウム、炭酸ナトリウム、炭
酸ガス等を添加することにより行う。しかし、通常の用
水・排水は炭酸マンガンの生成に十分な炭酸イオンを含
むため、特には、存在量を規定しない。被処理水の反応
槽内への通水速度は、ＬＶで２００〜２０００ｍ／日が
好ましいが、当該媒体が流動し、目標とする処理水質が
得られる流速であれば、特に規定するものではない。The water to be treated in the present invention is 1.1 mg or more, preferably 2.times.
It is necessary to contain 2 mg or more of carbonate ions, and in the case of less than 2 mg, it is necessary to add carbonate ions. The addition of carbonate ions is performed by adding sodium hydrogen carbonate, sodium carbonate, carbon dioxide gas and the like. However, ordinary water / wastewater contains carbonate ions sufficient for the production of manganese carbonate. The flow rate of the water to be treated into the reaction tank is preferably 200 to 2000 m / day in LV, but is not particularly limited as long as the medium flows and the target treated water quality can be obtained. .
【００１３】本発明の処理方法においては、流動床反応
槽内の処理水ｐＨは、８．０〜１０．０に調節すること
が好ましい。ｐＨ８．０以下では、晶析反応は起こら
ず、ｐＨ１０．０以上では、晶析反応は起こるものの、
水酸化マンガン等のＳＳが発生し、本発明の効果が十分
に発揮されない。アルカリ剤の注入量は、全体量の５０
〜８０％を、反応槽下部の注入点から媒体充填の半分の
位置までに、残りの２０〜５０％を、媒体充填高さの半
分の位置以降に充填することが好ましい。アルカリ剤注
入の全体量の調節は、流動床反応槽内処理水のｐＨ測定
値によるＰＩＤ制御等自動制御を行っても良い。さら
に、経過日数に従い反応槽下部の晶析反応速度は低下す
るため、反応槽下部へのアルカリ剤の注入を停止し、流
動床下部以降の注入点から媒体充填高さの半分の位置ま
でに、全体量の５０〜８０％を注入することにより、晶
析反応速度を維持しても良い。[0013] In the treatment method of the present invention, the pH of the treated water in the fluidized bed reaction tank is preferably adjusted to 8.0 to 10.0. At pH 8.0 or lower, no crystallization reaction occurs. At pH 10.0 or higher, crystallization reaction occurs.
SS such as manganese hydroxide is generated, and the effect of the present invention is not sufficiently exhibited. The injection amount of the alkaline agent is 50% of the total amount.
It is preferable to fill ~ 80% from the injection point at the bottom of the reaction tank to half the medium filling position, and the remaining 20-50% from the half filling position of the medium and thereafter. The adjustment of the total amount of the alkali agent injection may be performed by automatic control such as PID control based on a measured pH value of the treated water in the fluidized bed reaction tank. Furthermore, since the crystallization reaction rate at the lower part of the reaction vessel decreases with the lapse of days, the injection of the alkali agent into the lower part of the reaction tank was stopped, and from the injection point after the lower part of the fluidized bed to a position half the medium filling height, The crystallization reaction rate may be maintained by injecting 50 to 80% of the total amount.
【００１４】次に、本発明の特徴である処理水循環につ
いて説明する。本発明では、原水の流量が少ない場合、
不足分を処理水循環によって補い、流動床内の流速を維
持する。このとき、原水ポンプと循環ポンプの合計流量
を一定にする制御機構を設けても良い。原水のｐＨ変動
が大きい場合、処理水の任意の量を循環することによ
り、循環水が緩衝剤の役割を果たし、流動床内のｐＨを
安定させることができる。原水のＭｎ濃度が高くなった
場合、処理水の任意の量を循環し、原水を希釈すること
により、マンガン濃度を低下させ、水酸化マンガンの生
成を抑えることができる。処理水の循環量は、原水のｐ
Ｈ変動の大きさやマンガン濃度により異なるが、原水流
量の０．５倍から５倍が好ましい。本発明では、原水の
懸濁物質が多く、循環水量が多い場合、水中の懸濁物質
が流動床内に長時間滞留する事を防ぐために、沈着槽を
設置しても良い。沈殿槽内の流速は、流動床の流速以下
が好ましい。Next, the process water circulation which is a feature of the present invention will be described. In the present invention, when the flow rate of raw water is small,
The shortage is compensated for by the circulation of treated water and the flow rate in the fluidized bed is maintained. At this time, a control mechanism for keeping the total flow rate of the raw water pump and the circulation pump constant may be provided. When the pH fluctuation of the raw water is large, by circulating an arbitrary amount of the treated water, the circulating water serves as a buffer and can stabilize the pH in the fluidized bed. When the Mn concentration of the raw water increases, an arbitrary amount of the treated water is circulated to dilute the raw water, thereby reducing the manganese concentration and suppressing the production of manganese hydroxide. The circulation amount of treated water is p
Although it depends on the magnitude of the H fluctuation and the manganese concentration, it is preferably 0.5 to 5 times the raw water flow rate. In the present invention, when the suspended matter in the raw water is large and the amount of circulating water is large, a deposition tank may be provided in order to prevent the suspended substance in the water from staying in the fluidized bed for a long time. The flow rate in the settling tank is preferably equal to or lower than the flow rate of the fluidized bed.
【００１５】[0015]
【実施例】以下、本発明を実施例により具体的に説明す
る。 実施例１ 表１に示す原水を、図１の本発明の装置と、比較のため
の図３の従来法の装置３とを用いて処理した。炭酸マン
ガン晶析用媒体は、平均粒径０．４ｍｍのマンガン砂を
使用した。この媒体１６リットルを直径１００ｍｍの流
動床に充填し、流動床内流速をＬＶ６００ｍ／ｄで通水
した。本発明の装置１には原水量と処理水循環量を１対
１で通水し、従来例の装置３には全量原水を通水した。
装置１、装置３にはアルカリ剤を流動床下部から注入
し、流動床内の処理水ｐＨが９．５になるように調節し
た。The present invention will be described below in more detail with reference to examples. Example 1 Raw water shown in Table 1 was treated using the apparatus of the present invention in FIG. 1 and the conventional apparatus 3 in FIG. 3 for comparison. As a manganese carbonate crystallization medium, manganese sand having an average particle diameter of 0.4 mm was used. 16 liters of this medium was filled in a fluidized bed having a diameter of 100 mm, and water was passed through the fluidized bed at a flow rate of LV600 m / d. The amount of raw water and the amount of circulating treated water were passed through the apparatus 1 of the present invention in a one-to-one correspondence, and the entire amount of raw water was passed through the apparatus 3 of the conventional example.
An alkaline agent was injected into the devices 1 and 3 from the lower part of the fluidized bed, and the pH of the treated water in the fluidized bed was adjusted to 9.5.
【００１６】その結果を表１に示す。The results are shown in Table 1.
【表１】 本発明の装置１による処理は、処理水ｐＨ９．４〜９．
６、Ｔ−Ｍｎの増加：０．２ｍｇ／Ｌ〜０．６ｍｇ／
Ｌ、従来の装置３による処理は、処理水ｐＨ９．１〜
９．８、Ｔ−Ｍｎの増加：３．２ｍｇ／Ｌ〜９．３ｍｇ
／Ｌであった。本発明の装置１により、ｐＨが安定し、
Ｔ−Ｍｎの増加が少ないマンガン除去を行うことができ
た。[Table 1] The treatment by the apparatus 1 of the present invention is performed with the treated water pH 9.4 to 9.
6, increase in T-Mn: 0.2 mg / L to 0.6 mg /
L, the treatment by the conventional device 3 is the treatment water pH 9.1 to
9.8, increase in T-Mn: 3.2 mg / L to 9.3 mg
/ L. With the device 1 of the present invention, the pH is stabilized,
Manganese removal with a small increase in T-Mn could be performed.
【００１７】[0017]
【発明の効果】本発明により、被処理水のｐＨ変動や、
被処理水のＭｎ濃度の上昇に対しても、水酸化マンガン
の生成を抑制できるマンガン除去を行うことができた。According to the present invention, the fluctuation of the pH of the water to be treated,
Manganese removal capable of suppressing the production of manganese hydroxide could be performed even when the Mn concentration of the water to be treated increased.
【図１】本発明の処理装置の一例を示す概略構成図。FIG. 1 is a schematic configuration diagram showing an example of a processing apparatus of the present invention.
【図２】本発明の処理装置の他の例を示す概略構成図。FIG. 2 is a schematic configuration diagram showing another example of the processing apparatus of the present invention.
【図３】従来の処理装置の概略構成図。FIG. 3 is a schematic configuration diagram of a conventional processing apparatus.
１：流動床処理槽、２：晶析用媒体、３：原水ポンプ、
４：原水流入管、５：逆止弁、６：アルカリ剤供給ポン
プ、７：アルカリ剤槽、８：ｐＨ測定器、９：処理水
管、１０：循環ポンプ、１１：処理水循環用管、１２：
沈殿槽、１３：媒体排水管、１４：原水流入口、１５：
処理水流出口、１６：アルカリ剤注入口、１７：上澄水
流出口、1: fluidized bed treatment tank, 2: crystallization medium, 3: raw water pump,
4: Raw water inflow pipe, 5: check valve, 6: alkaline agent supply pump, 7: alkaline agent tank, 8: pH meter, 9: treated water pipe, 10: circulation pump, 11: treated water circulation pipe, 12:
Sedimentation tank, 13: medium drainage pipe, 14: raw water inlet, 15:
Treated water outlet, 16: alkali agent inlet, 17: supernatant water outlet,
Claims (4)
い流動床反応槽に、炭酸イオンを含む被処理水を槽底部
から上向流で通水するとともに、槽底部の被処理水流入
口近辺及び／又は流動床内にアルカリ剤を注入し、流動
床内の処理水ｐＨを８〜１０に調節することにより、前
記水中の溶解性マンガンを晶析除去するマンガン含有水
の処理方法において、前記処理水の所要量を被処理水に
導入し、循環使用することを特徴とするマンガン含有水
の処理方法。Claims: 1. A treatment bed containing carbonate ions is flowed upward from a bottom of a tank into a fluidized bed reaction tank having no support bed using manganese sand as a fluid medium, and a treatment water inlet near the bottom of the tank. And / or by injecting an alkaline agent into the fluidized bed and adjusting the pH of the treated water in the fluidized bed to 8 to 10 so as to crystallize and remove soluble manganese in the water, A method for treating manganese-containing water, comprising introducing a required amount of treated water into treated water and circulating it.
質を除去した上澄水を使用することを特徴とする請求項
１記載のマンガン含有水の処理方法。2. The method for treating manganese-containing water according to claim 1, wherein the circulation of the treated water uses supernatant water from which suspended substances have been removed from the treated water.
い流動床反応槽と、該槽底部に設けた炭酸イオンを含む
被処理水を流入する流入口及び槽上部に設けた処理水流
出口と、流動床内の処理水ｐＨを８〜１０に調節するた
めの槽底部の被処理水流入口近辺及び／又は流動床内に
設けたアルカリ剤注入口とを有する溶解性マンガンを晶
析除去するマンガン含有水の処理装置において、前記処
理水の所要量を循環するための処理水流出口と被処理水
流入口を接続する循環通路を設けたことを特徴とするマ
ンガン含有水の処理装置。3. A fluidized bed reactor having no support bed using manganese sand as a fluid medium, an inlet provided at the bottom of the tank for injecting water to be treated containing carbonate ions, and a treated water outlet provided at an upper portion of the tank. A manganese for crystallizing and removing soluble manganese having a vicinity of an inlet of a water to be treated at the bottom of a tank and / or an alkali agent inlet provided in the fluidized bed for adjusting the pH of treated water in a fluidized bed to 8 to 10; An apparatus for treating manganese-containing water, comprising a treatment water outflow port for circulating a required amount of the treatment water and a circulation passage connecting the treatment water inflow port.
の上澄水の一部を被処理水流入口に循環することを特徴
とする請求項３記載のマンガン含有水の処理装置。4. The apparatus for treating manganese-containing water according to claim 3, wherein a settling tank is provided in the circulation passage, and a part of the supernatant water of the tank is circulated to an inlet of the water to be treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06038498A JP3880190B2 (en) | 1998-02-26 | 1998-02-26 | Method and apparatus for treating manganese-containing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06038498A JP3880190B2 (en) | 1998-02-26 | 1998-02-26 | Method and apparatus for treating manganese-containing water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11244871A true JPH11244871A (en) | 1999-09-14 |
| JP3880190B2 JP3880190B2 (en) | 2007-02-14 |
Family
ID=13140612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06038498A Expired - Fee Related JP3880190B2 (en) | 1998-02-26 | 1998-02-26 | Method and apparatus for treating manganese-containing water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3880190B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1095911A1 (en) * | 1998-03-30 | 2001-05-02 | Ebara Corporation | Method and device for treating manganese containing water |
| JP2002035765A (en) * | 2000-07-21 | 2002-02-05 | Japan Organo Co Ltd | Method for removing target component from water to be treated and crystallization apparatus |
| JP2003103275A (en) * | 2001-07-24 | 2003-04-08 | Ngk Insulators Ltd | Cleaning treatment method for manganese-containing water |
| CN106242180A (en) * | 2016-08-29 | 2016-12-21 | 湖南艾布鲁环保科技有限公司 | A kind of electrolytic manganese residues percolate advanced treating and reclamation set and method |
-
1998
- 1998-02-26 JP JP06038498A patent/JP3880190B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1095911A1 (en) * | 1998-03-30 | 2001-05-02 | Ebara Corporation | Method and device for treating manganese containing water |
| EP1095911A4 (en) * | 1998-03-30 | 2003-04-23 | Ebara Corp | Method and apparatus for treating manganese containing water |
| JP2002035765A (en) * | 2000-07-21 | 2002-02-05 | Japan Organo Co Ltd | Method for removing target component from water to be treated and crystallization apparatus |
| JP2003103275A (en) * | 2001-07-24 | 2003-04-08 | Ngk Insulators Ltd | Cleaning treatment method for manganese-containing water |
| CN106242180A (en) * | 2016-08-29 | 2016-12-21 | 湖南艾布鲁环保科技有限公司 | A kind of electrolytic manganese residues percolate advanced treating and reclamation set and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3880190B2 (en) | 2007-02-14 |
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