JP2005131479A - Magnetic separation and decontamination apparatus and magnetic separation and decontamination method - Google Patents

Magnetic separation and decontamination apparatus and magnetic separation and decontamination method Download PDF

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JP2005131479A
JP2005131479A JP2003368354A JP2003368354A JP2005131479A JP 2005131479 A JP2005131479 A JP 2005131479A JP 2003368354 A JP2003368354 A JP 2003368354A JP 2003368354 A JP2003368354 A JP 2003368354A JP 2005131479 A JP2005131479 A JP 2005131479A
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sludge
magnetic
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treated
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JP4821085B2 (en
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Norihide Saho
典英 佐保
Hisashi Isokami
尚志 磯上
Takashi Mizumori
隆司 水守
Akira Mochizuki
明 望月
Susumu Harada
原田  進
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Hitachi Ltd
株式会社日立製作所
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic separation and decontamination apparatus constituted so as to well separate a magnetic substance with respect to the fluctuations in the surface of the water of a magnetic separation part to stably discharge sludge of high density. <P>SOLUTION: This magnetic separation and decontamination apparatus is constituted so as to include a rotary filter body having a cylindrical filter net to filter sludge and the magnetic substance from a fluid to be treated containing the magnetic substance, the cylindrical sludge recovering rotary body opposed to the rotary filter body in close vicinity thereto in a horizontal direction and receiving sludge and the magnetic substance on its surface accompanied by rotation to feed the same, a magnetic rotary body having an axis in the sludge recovering rotary body, composed of a rotary body and a plurality of the magnets attached to the circumference of the rotary body, arranged near the inner peripheral surface of the sludge recovering rotary body on the side at least positioned on the rotary filter body and magnetically attracting the magnetic substance filtered by the rotary filter body to the surface of the sludge recovering rotary body to transfer the same to the surface of the sludge recovering rotary body and a scraper for scraping off the sludge and magnetic substance transferred to the surface of the sludge recovering rotary body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、水質浄化や固液分離等を目的とした磁気分離浄化装置に関し、特に膜による磁性物質の捕捉および捕捉物の磁気分離を、磁気分離部の水面の変動に対して、良好に磁性物を分離し、高密度のスラッジを安定的に排出可能な、磁気分離浄化装置の構造に関する。   The present invention relates to a magnetic separation and purification apparatus for the purpose of water purification and solid-liquid separation, and more particularly, the magnetic separation of a magnetic substance by a membrane and the magnetic separation of the captured substance are favorably magnetized against fluctuations in the water surface of the magnetic separation unit. The present invention relates to a structure of a magnetic separation and purification device that can separate substances and stably discharge high-density sludge.
固液分離等を目的として、細めの金網や高分子繊維で編んだ網や膜を通水分離膜として使用し、汚濁粒子(汚泥という。)を有する原水に凝集剤と磁性粉を添加して磁性フロックを生成し、前記で磁性フロックを膜で分離し、膜で捕集した磁性フロックを磁場発生手段で磁気分離、除去して高濃度スラッジを回収する磁気分離浄化装置がある。本構造は、例えば特許文献1に記載されている。本膜分離浄化装置はステンレス鋼の細線やポリエステル繊維等で網を構成し、例えばその数十ミクロンメートルの目開きの開口部を有する。開口部の投影面積や投影直径よりも小さい微細な汚濁物質を分離するため、予め原水に例えば凝集剤の硫酸バン土やポリ塩化アルミニウムやポリ硫酸鉄と磁性粉を加えて撹絆し、原水中の微細な固形浮遊物や藻類、菌類、微生物を、凝縮剤によって数百ミクロンメートル程度の大きさに結合させた磁性フロックを形成させる。この磁性フロックは数十ミクロンメートルの目開きを有した開口部を通過できず高い除去率で捕捉分離され、膜を透過した水はさらに水質が高い浄化水となる。   For the purpose of solid-liquid separation, etc., it is used as a water separation membrane through a fine wire mesh, a net woven with polymer fibers, or a membrane, and a flocculant and magnetic powder are added to the raw water with contaminated particles (called sludge). There is a magnetic separation and purification device that generates magnetic flocs, separates the magnetic flocs with a film, and magnetically separates and removes the magnetic flocs collected by the film to recover high-concentration sludge. This structure is described in Patent Document 1, for example. This membrane separation and purification apparatus is constituted by a stainless steel fine wire, polyester fiber, or the like, and has, for example, an opening with an opening of several tens of micrometers. In order to separate fine pollutants smaller than the projected area and projected diameter of the opening, the raw water is mixed with, for example, coagulant vanous acid sulfate, polyaluminum chloride, polyiron sulfate and magnetic powder, A magnetic floc is formed by binding a small solid suspension of algae, algae, fungi, and microorganisms to a size of about several hundred microns with a condensing agent. This magnetic floc cannot pass through an opening having an opening of several tens of micrometers, and is captured and separated at a high removal rate. Water that has permeated the membrane becomes purified water with higher water quality.
膜上に捕集された磁性フロックは、洗浄水で膜から洗い流された後、水面近傍に停留する磁性フロックは、前記水面近傍に静止配置された磁石の磁気力で吸引して磁気分離され、スラッジ移送手段でスラッジ回収槽に移送され排除される。
スラッジは最終的には、通常トラックで処分場や焼却場に運搬したり、コンポスト化する。
After the magnetic flocs collected on the membrane are washed away from the membrane with washing water, the magnetic flocs that remain in the vicinity of the water surface are magnetically separated by being attracted by the magnetic force of a magnet that is stationaryly placed near the water surface, It is transferred to the sludge collection tank by the sludge transfer means and eliminated.
Ultimately, the sludge is usually transported to a disposal site or incinerator by a truck or composted.
特許文献2には、汚水処理槽に流入した汚水中の磁性粒子を汚水処理槽内に配置された磁気板で前記汚水中から吸着分離して前記汚水処理槽外に排出する汚水処理装置において、下部に汚水の流入口が設けられると共に上部に処理水の排出口が配設された汚水処理槽と、前記汚水処理槽の汚水中に水没配置されると共に、回転軸に所定の間隔をもって並列装架された複数の円盤状磁性体と、前記各円盤状磁性体の表面に配設され、対向する円盤状磁性体間において対向する磁極が異極となるように配置された複数の永久磁石片と、スクレーバ付の無端状ベルトから成り、周回して前記永久磁石変の表面に吸着した汚泥を掻取ると共に、掻取った汚泥を前記円盤状磁性体の上方に移動させる掻取装置と、前記汚水処理槽の汚水中に設けられると共に、前記掻取装置を囲んで前記スクレーパで掻取った汚泥を汚泥排出口に案内する汚泥排出通路と、前記汚泥排出用通路に連通して形成され前記汚泥排出用通路中の処理水が溢流する溢流口と、から成る汚水処理装置が記載されている。   In Patent Document 2, in the sewage treatment apparatus that adsorbs and separates magnetic particles in the sewage flowing into the sewage treatment tank from the sewage with a magnetic plate disposed in the sewage treatment tank and discharges it outside the sewage treatment tank, A sewage treatment tank having a sewage inlet at the bottom and a treated water discharge outlet at the top, and a submersion in the sewage in the sewage treatment tank, and being mounted in parallel with a predetermined interval on the rotating shaft. A plurality of disk-like magnetic bodies that are suspended, and a plurality of permanent magnet pieces that are disposed on the surface of each of the disk-like magnetic bodies and that are arranged so that the opposing magnetic poles have different polarities between the opposing disk-like magnetic bodies. And a scraping device that comprises an endless belt with a scraper, circulates and scrapes the sludge adsorbed on the surface of the permanent magnet deformation, and moves the scraped sludge above the disk-shaped magnetic body, When installed in the sewage of the sewage treatment tank Further, a sludge discharge passage that surrounds the scraping device and guides the sludge scraped by the scraper to a sludge discharge port, and is formed in communication with the sludge discharge passage, and the treated water in the sludge discharge passage overflows. A sewage treatment device is described which comprises an overflow outlet.
特許文献3には、非磁性剤からなる回転ドラム内に磁石を外周面の所要位置に配置した内筒を内蔵し、回転ドラムに当接する絞りローラーとスクレパーを備えた構成からなる磁気分離装置において、回転ドラム表面の全部又は所要部が所要深さで磁性体化された回転ドラム型磁気分離装置が記載されている。   Japanese Patent Application Laid-Open No. 2003-228688 discloses a magnetic separation apparatus having a structure in which an inner cylinder in which a magnet is arranged at a required position on the outer peripheral surface is built in a rotating drum made of a nonmagnetic agent, and a squeezing roller and a scraper that come into contact with the rotating drum are provided. A rotary drum type magnetic separation device is described in which the entire surface or a required portion of the rotary drum is made magnetic at a required depth.
特開2002−273261号公報JP 2002-273261 A 特許第3228430号公報Japanese Patent No. 3228430 特開2000−79353号公報JP 2000-79353 A
上記のように、従来例では、膜から洗い流されて水面近傍に停留する磁性フロックを、静止した磁石の静止した磁場分布で磁気吸引するので、前記水面が上下に変動し、前記水面での磁気力が弱い位置にある場合、水面近傍に多数存在する磁性フロックの除去性能が低下し、被処理水中の磁性フロック密度が高まり、膜による浄化速度が低下し、浄化性能が低減する問題が生じる。   As described above, in the conventional example, the magnetic flocs washed away from the film and staying in the vicinity of the water surface are magnetically attracted by the stationary magnetic field distribution of the stationary magnet. When the force is at a weak position, the removal performance of a large number of magnetic flocs existing in the vicinity of the water surface is lowered, the magnetic floc density in the water to be treated is increased, the purification rate by the membrane is lowered, and the purification performance is reduced.
一方、スラッジをトラックで処分場や焼却場に運搬する場合やコンポスト化する場合、運搬時にスラッジから水が漏れないように含水率を約85%に、またコンポスト時の有機物を分解する微生物の活性化を図るように含水率を75%にするように運搬前、コンポスト処理前にスラッジの含水率を小さくしなければならない。   On the other hand, when sludge is transported to a disposal site or incineration site by truck or composted, the water content is about 85% so that water does not leak from the sludge during transportation, and the activity of microorganisms that decompose organic matter during composting In order to reduce the moisture content of the sludge, the moisture content must be reduced to 75% before transportation and composting.
ここで、膜による浄化速度が低下して被処理水の水面が上昇すると、磁性フロックを有する被処理水が、濾過する水槽に隣接した磁性フロックを高濃度のスラッジとして磁気分離、除去、回収するスラッジ回収槽に被処理水が越流し、高濃度で回収されたスラッジが流入した被処理水で大幅に薄まり、スラッジが低濃度となり、スラッジ体積が大幅に増加し、含水率を小さくする際に脱水コストが増加する問題がある。   Here, when the purification rate by the membrane decreases and the surface of the water to be treated rises, the water to be treated having magnetic flocs is magnetically separated, removed, and recovered by using magnetic flocs adjacent to the water tank to be filtered as high-concentration sludge. When the water to be treated overflows into the sludge collection tank, the sludge recovered at a high concentration drastically dilutes with the water to be treated, the sludge becomes low in concentration, the sludge volume increases significantly, and the moisture content is reduced. There is a problem that dehydration costs increase.
本発明の目的は、磁気分離部の水面の変動に対して、良好に磁気物質を含む磁気フロックを分離し、高密度のスラッジを安定的に排出可能な磁気分離浄化装置を提供することにある。
また、本発明は被処理水の水面が上昇した場合に、高濃度で回収されたスラッジが被処理水の越流によって薄まってしまうことを防止することを行う。
An object of the present invention is to provide a magnetic separation and purification device capable of separating magnetic flocs containing magnetic substances satisfactorily and stably discharging high-density sludge against fluctuations in the water surface of the magnetic separation unit. .
Moreover, this invention prevents that the sludge collect | recovered by high concentration is diluted with the overflow of to-be-processed water when the water surface of to-be-processed water rises.
磁性フロックを磁気分離するために使用する磁石を回転式にすることにより、前記水面が上下に変動しても、前記水面位置での磁気力が周期的に強くなる。これによって、水面近傍に多数存在する磁性フロックを良好に磁気吸引する。このことによって、磁性フロックの除去性能が低下する問題を解決できる。   By making the magnet used to magnetically separate the magnetic flocs into a rotary type, even if the water surface fluctuates up and down, the magnetic force at the water surface position increases periodically. As a result, a large number of magnetic flocs existing in the vicinity of the water surface are magnetically attracted satisfactorily. This can solve the problem that the performance of removing magnetic flocs is lowered.
また、被処理水を濾過する水槽と、スラッジ回収槽の間に、汚水を捕集する汚水回収層を設けることにより、被処理水の水面が上昇した場合に越流する被処理水が汚水回収槽に流れ込みスラッジ回収槽に流入することを防止する。この構造によって、スラッジ回収槽内の高濃度のスラッジが被処理水で薄まることを防止できるので、スラッジ体積の増加を防止でき、回収したスラッジの含水率をさらに小さくする際に必要となる脱水コストの増加の問題を解決できる。   In addition, by providing a sewage recovery layer that collects sewage between the water tank that filters the sewage and the sludge recovery tank, the sewage is recovered when the surface of the sewage rises. It flows into the tank and prevents it from flowing into the sludge collection tank. This structure prevents high-concentration sludge in the sludge collection tank from thinning with the water to be treated, thus preventing increase in sludge volume and the dehydration cost required to further reduce the water content of the collected sludge. Can solve the increase problem.
本発明によって、構成される磁気分離浄化装置は、磁性を持つ被除去物の磁性物質を含む被処理流体、あるいは非磁性の除去物を含む流体に、磁性体と凝集剤、または被除去物と化学反応し、磁性物体を生じる添加物を添加することにより、前記被除去物に磁性を持たせた磁性物質を含む被処理流体を濾過するための、被除去物や磁性物質が通過できない目開きを有する回転できる濾過手段と、前記濾過手段で濾過された磁性物質を、磁気力で磁気吸引させる回転できる磁場発生手段と、磁気吸引した磁性物質が、前記磁場発生手段の方向に空間を移動するときに前記磁性物質および汚泥を含む磁気フロックを表面に載置して回収する回転できる汚泥回収手段と、前記磁場発生手段を回転する磁場回転手段と、を備え、前期汚泥回収手段は前記磁場発生手段の磁場強度の大小の空間の間を移動する構造であり、前記汚泥回収手段上の堆積物を掻き取る掻き取り手段を設けている。さらに、前記被除去物や磁性物質を回収する汚泥捕集手段を有する。   According to the present invention, a magnetic separation and purification device includes a magnetic material and a flocculant, or an object to be removed and a fluid to be treated containing a magnetic substance to be removed or a non-magnetic substance to be removed. Opening through which the to-be-removed object or magnetic substance cannot pass to filter the fluid to be treated containing the magnetic substance that makes the object to be removed magnetized by adding an additive that chemically reacts to generate a magnetic substance. A rotatable filtering means, a rotatable magnetic field generating means for magnetically attracting the magnetic substance filtered by the filtering means, and the magnetically attracted magnetic substance move in space in the direction of the magnetic field generating means A sludge collecting means capable of rotating to place and collect a magnetic floc containing the magnetic substance and sludge on the surface, and a magnetic field rotating means for rotating the magnetic field generating means. A structure that moves between spatial and small field strength of the magnetic field generating means is provided with scraping means for scraping deposits on the sludge recovery means. Furthermore, it has the sludge collection means which collects the said to-be-removed thing and a magnetic substance.
また、本発明によって構成される磁気分離浄化装置は、磁性を持つ被除去物の磁性物質を含む被処理流体、あるいは、被磁性の被除去物を含む流体に、磁性体と凝集剤、または被除去物と化学反応し、磁性物体を生じる添加物を添加することにより、前記被除去物に磁性を持たせた磁性物質を含む被処理流体を濾過するための、被除去物や磁性物質が通過できない目開きを有する回転できる濾過手段と、前記濾過手段で濾過された磁性物質を、磁気力で磁気吸引させる磁場発生手段と、磁気吸引した磁性物質が、前記磁場発生手段の方向に空間を移動するときに磁気フロックを表面に載置して回収する汚泥回収手段と、を備え、前記汚泥回収手段は前記磁場発生手段の磁場強度の大きな空間を移動できる構造としてあり、さらに前記汚泥回収手段上の堆積物を掻き取る掻き取り手段を設け、前記被除去物や磁性物質を回収する汚泥捕集手段と、前記濾過手段を有する水槽と前記汚泥捕集手段との間に、濾過手段に流入する前の前記非処理流体が越流し流れ込む越流水捕集手段を有する。   In addition, the magnetic separation and purification apparatus constructed according to the present invention includes a magnetic substance and a flocculant or a substance to be treated in a fluid to be treated containing a magnetic substance to be removed having magnetism or a fluid containing a substance to be removed. By adding an additive that chemically reacts with the removed substance to generate a magnetic substance, the removed object or magnetic substance passes through to filter the fluid to be treated containing the magnetic substance that has made the removed object magnetic. A filtering means capable of rotating with a mesh opening, a magnetic field generating means for magnetically attracting the magnetic material filtered by the filtering means by a magnetic force, and the magnetic material attracted magnetically moves in the direction of the magnetic field generating means. And a sludge collecting means for collecting and recovering the magnetic floc on the surface, and the sludge collecting means has a structure capable of moving in a space where the magnetic field intensity of the magnetic field generating means is large, and further the sludge collecting A scraping means for scraping the deposits on the stage is provided, and the filtering means is disposed between the sludge collecting means for collecting the object to be removed and the magnetic substance, the water tank having the filtering means, and the sludge collecting means. There is an overflow water collecting means through which the non-processed fluid before flowing in overflows.
前述の磁気分離浄化装置は、前記汚泥回収手段上の前記堆積物を前記掻き取り手段による前記堆積物移送方向に移送する堆積物移送手段を有する。   The above-described magnetic separation and purification apparatus has deposit transfer means for transferring the deposit on the sludge recovery means in the deposit transfer direction by the scraping means.
本発明によれば、濾過網(網21)と汚泥回収回転体33との間に形成される磁気分離部の水面変動に対して、良好に磁気フロック(汚泥と磁気物質を含む)を分離し、高密度のスラッジを安定的に生成し、排出可能な磁気分離浄化装置が提供される。   According to the present invention, magnetic flocks (including sludge and magnetic substances) can be separated well against fluctuations in the water surface of the magnetic separation section formed between the filtration net (net 21) and the sludge recovery rotating body 33. A magnetic separation and purification device capable of stably generating and discharging high-density sludge is provided.
また、本発明によれば、被処理水の水面が上昇した場合にあっても水槽22に越流水捕集装置60を設けているので、高濃度で回収されたスラッジが被処理水の越流によって薄まってしまうということがない。   Further, according to the present invention, since the overflow water collecting device 60 is provided in the water tank 22 even when the water level of the water to be treated rises, the sludge collected at a high concentration can overflow the water to be treated. It wo n’t fade away.
被処理流体に含まれる汚泥を磁気力を利用して分離し、被処理流体を浄化する磁気分離浄化装置は、水槽内に配設され、円筒状の濾過網を有し、磁気物質を含む被処理流体から汚泥および磁気物質を濾過する回転濾過体と、該回転濾過体に対して水平方向において近接対峙し、回転に伴なって表面上に汚泥および磁気物質を載置して搬送する円筒状の汚泥回収回転体と、該汚泥回収回転体内に軸心を有し、回転体と該回転体の円周上に取り付けた複数の磁石とからなり、少なくとも前記回転濾過体に位置する側を前記汚泥回収回転体の内周面に近接配設され、前記回転濾過体によって濾過された磁気物質を前記汚泥回収回転体の表面上に磁気吸引することによって汚泥を前記汚泥回収回転体の表面上に移送させる磁気回転体と、前記汚泥回収回転体の表面上を搬送される汚泥および磁気物質を掻き取る掻き取り装置とを含んで構成される。   A magnetic separation and purification device that separates sludge contained in a fluid to be treated using magnetic force and purifies the fluid to be treated is provided in a water tank, has a cylindrical filtration net, and contains a magnetic substance. A rotating filter that filters sludge and magnetic substances from the treatment fluid, and a cylindrical shape that faces the rotating filter in the horizontal direction and carries sludge and magnetic substances on the surface as it rotates. A sludge recovery rotating body, and a sludge recovery rotating body having an axis, and a rotating body and a plurality of magnets attached on a circumference of the rotating body, at least the side located on the rotary filtering body is The sludge is placed on the surface of the sludge recovery rotator by magnetically attracting the magnetic material, which is disposed close to the inner peripheral surface of the sludge recovery rotator and filtered by the rotary filter, onto the surface of the sludge recovery rotator. Magnetic rotating body to be transferred and sludge recovery Configured to include a scraping device for scraping sludge and magnetic substance being conveyed on the surface of the rolling body.
さらに、前記磁気回転体は、前記汚泥回収回転体に対して偏心配設される。
さらに、前記磁気回転体は、前記汚泥回収回転体に対して同心配設してもよく、この場合には、駆動源によって回転駆動される回転翼を前記汚泥回収回転体の表面に近接して上側に設けている。
Further, the magnetic rotating body is arranged eccentrically with respect to the sludge collecting rotating body.
Further, the magnetic rotating body may be disposed concentrically with the sludge collecting rotating body. In this case, a rotating blade driven to rotate by a drive source is placed close to the surface of the sludge collecting rotating body. It is provided on the upper side.
さらに、前記汚泥回収回転体と前記磁気回転体とを一体化して回転駆動源を共通とすることができる。
さらに、前記水槽からの被処理流体が越流し流れ込む越流水捕集装置を設けることができる。
Further, the sludge recovery rotating body and the magnetic rotating body can be integrated to share a rotational drive source.
Furthermore, the overflow water collection apparatus into which the to-be-processed fluid from the said water tank flows over and flows can be provided.
また、被処理流体に含まれる汚泥を磁気力を利用して分離し、被処理流体を浄化する磁気分離浄化方法は、水槽内に配設され、円筒状の濾過網を有する回転濾過体によって磁気物質を含む被処理体から汚泥および磁気物質を濾過し、円筒状の汚泥回収回転体内に軸心を有し、少なくとも前記回転濾過体に位置する側を前記汚泥回収回転体の内周面に近接配設され、円周配設された複数の磁石とから磁気回転体によって、前記回転濾過体によって濾過され、該回転濾過体との間の被処理流体の水面上に停留する磁気物質を前記汚泥回収回転体の表面上に磁気吸引して汚泥を前記汚泥回収回転体の表面上に移送し、前記汚泥回収回転体の表面上を搬送される汚泥および磁気物質を含む磁気ブロックを掻き取ることを行う。
さらに、前記磁気回転体を前記汚泥回収回転体に対して偏心配設することによって前記汚泥回収回転体は、磁気強度の大小の空間を回転する。
Further, a magnetic separation and purification method for separating sludge contained in a fluid to be treated using magnetic force and purifying the fluid to be treated is magnetically arranged by a rotary filter body disposed in a water tank and having a cylindrical filtration net. Sludge and magnetic substances are filtered from the object to be treated, and the shaft has a central axis in the cylindrical sludge recovery rotating body, and at least the side located on the rotary filtering body is close to the inner peripheral surface of the sludge recovery rotating body Magnetic sludge is disposed on the water surface of the fluid to be treated between the plurality of magnets arranged and circumferentially arranged by a magnetic rotating body and filtered by the rotary filtering body. Magnetically sucking on the surface of the recovery rotator to transfer the sludge onto the surface of the sludge recovery rotator, and scraping off the magnetic block containing the sludge and magnetic material conveyed on the surface of the sludge recovery rotator. Do.
Further, by arranging the magnetic rotating body eccentrically with respect to the sludge collecting rotating body, the sludge collecting rotating body rotates in a space having a large and small magnetic strength.
以下、本発明の一実施例を図1、図2および図3により説明する。図2は図1の膜分離装置14の拡大断面図、図3は図2のA−A断面図である。
原水貯槽1内に数ミリメートルの大きなゴミを取り除いた汚泥を含む被処理水である原水2を貯留し、ポンプ3でこの原水2を、配管4に所定の量を送水する。シーディング剤調整装置5から四酸酸化鉄等の磁性粉とpH調整剤、ポリ塩化アルミニウムや塩化鉄や硫酸第二鉄等の水溶液等のアルミニュウムイオンや鉄イオンを提供する凝集剤や高分子補強剤等を、導管6を通じて配管4内に加え、撹絆槽7において、モータ8で回転駆動される攪拌翼9により高速度で撹絆し、数百ミクロンメートルの磁性マイクロフロック(磁性フロック)を生成する。その後、高分子剤調整装置11から高分子補強剤等を、導管12を通じて配管10内に加え、撹絆槽13のモータ14で回転駆動される攪拌翼15で低速度でゆっくりと撹絆し、数ミリメートル程度の大きさの磁性フロック16(図1には示さず)を含む処理前の被処理水17を生成する。被処理流体は、添加することなく、当初から磁性を持つ被除去物の磁性物質を含む場合もある。
An embodiment of the present invention will be described below with reference to FIGS. 2 is an enlarged cross-sectional view of the membrane separation device 14 of FIG. 1, and FIG. 3 is a cross-sectional view taken along line AA of FIG.
Raw water 2 which is treated water containing sludge from which large trash of several millimeters is removed is stored in the raw water storage tank 1, and a predetermined amount of raw water 2 is sent to a pipe 4 by a pump 3. Coagulant and polymer reinforcement that provide aluminum ions and iron ions such as magnetic powder such as iron tetroxide and pH adjuster, aqueous solution such as polyaluminum chloride, iron chloride and ferric sulfate from seeding agent adjusting device 5 Agents and the like are added into the pipe 4 through the conduit 6 and stirred in the stirring tank 7 at a high speed by the stirring blade 9 that is driven to rotate by the motor 8, thereby producing a magnetic micro floc (magnetic floc) of several hundred microns. Generate. Thereafter, a polymer reinforcing agent or the like is added from the polymer agent adjusting device 11 into the pipe 10 through the conduit 12, and is slowly agitated at a low speed with the stirring blade 15 rotated by the motor 14 of the agitation tank 13, To-be-treated water 17 including a magnetic floc 16 (not shown in FIG. 1) having a size of several millimeters is generated. The fluid to be treated may contain a magnetic substance to be removed that is magnetic from the beginning without being added.
このように生成した被処理水17を、導管18を通じて磁気分離浄化装置19に通水する。図2、図3により膜磁気分離浄化装置19の構造を説明する。駆動源(図示せず)によって回転する回転ドラム20の外周面にステンレス鋼の細線や銅の細線やポリエステル繊維等で数ミクロンメートルから数十ミクロンメートルの目開きを有した開口部を有する濾過フィルタとなる網21を設ける。すなわち、円筒状形成の濾過網を設ける。回転ドラム20と網21によって回転濾過体が形成される。   The water to be treated 17 generated in this way is passed through the conduit 18 to the magnetic separation and purification device 19. The structure of the membrane magnetic separation and purification device 19 will be described with reference to FIGS. A filter having an opening having an opening of several micrometers to several tens of micrometers made of stainless steel fine wire, copper fine wire, polyester fiber, or the like on the outer peripheral surface of the rotating drum 20 rotated by a driving source (not shown). A net 21 is provided. That is, a cylindrical filter screen is provided. A rotating filter body is formed by the rotating drum 20 and the net 21.
水槽22に流入した被処理水17は、網21を通過しドラム20内に流入する。この時、被処理水中の汚泥および磁性物質を含む磁性フロック16は網21内面に捕捉され、網21を通過し磁性フロック16を分離された水は浄化水となって開口部23から排出され、配管24を通り浄化水槽25に溜り、系外に放流される。被処理水17が網21を通過する動力は、被処理水17とドラム20内の浄化水との液面位差である。
一方、図2において、磁性フロック16は反時計回りに回転する網21の外面に濾過されて付着し、堆積物となって液面上の大気部に露出する。
The treated water 17 flowing into the water tank 22 passes through the net 21 and flows into the drum 20. At this time, the magnetic floc 16 containing sludge and magnetic substance in the water to be treated is captured by the inner surface of the net 21, and the water that has passed through the net 21 and separated from the magnetic floc 16 becomes purified water and is discharged from the opening 23, It passes through the pipe 24 and accumulates in the purified water tank 25 and is discharged out of the system. The power that the treated water 17 passes through the net 21 is a liquid level difference between the treated water 17 and the purified water in the drum 20.
On the other hand, in FIG. 2, the magnetic floc 16 is filtered and attached to the outer surface of the mesh 21 rotating counterclockwise, and becomes a deposit and is exposed to the atmosphere on the liquid surface.
浄化水槽(水槽という。)25内の浄化水をポンプ26で加圧され導管27からシャワー管28に送り、孔からシャワー水を、網21内表面から外面側に吹き付ける。網21の外表面に蓄積した磁性フロック16はシャワー水で剥がれ網21面は再生される。洗い流された磁性フロック16は、後述する汚泥回収体との間で水槽22内の被処理水17の水面上に停留する。   Purified water in a purified water tank (referred to as a water tank) 25 is pressurized by a pump 26 and sent from a conduit 27 to a shower pipe 28, and shower water is blown from the inner surface of the net 21 to the outer surface side. The magnetic floc 16 accumulated on the outer surface of the net 21 is peeled off by shower water, and the surface of the net 21 is regenerated. The washed-out magnetic floc 16 stays on the surface of the water to be treated 17 in the water tank 22 with a sludge collection body to be described later.
磁気分離の磁場発生手段として使用する回転式の磁石回転体29は、非磁性体の材料で製作した回転体30の円周上に、例えば外面に複数条の溝に永久磁石31を接着剤等で固定し、前記回転体30を、モータ32で回転数を制御されて回転する構造となっている。永久磁石31は、周方向および円筒面方向において、微小間隙がおかれて規則正しく配置され、しっかりと回転体30に固着されている。   A rotary magnet rotating body 29 used as a magnetic field generating means for magnetic separation has a permanent magnet 31 bonded to a circumference of a rotating body 30 made of a non-magnetic material, for example, in a plurality of grooves on the outer surface, and the like. The rotating body 30 is rotated by controlling the number of rotations by a motor 32. The permanent magnets 31 are regularly arranged with minute gaps in the circumferential direction and the cylindrical surface direction, and are firmly fixed to the rotating body 30.
一方、磁気分離した磁性フロックを移送するために使用する非磁性体の材料で製作した汚泥移送用の回転体33は、軸34を介してモータ35で回転数を制御されて回転する。端部では、軸34を水密性を有した回転支持体36により水槽22の壁で支持し、他端部では、回転体33外周部を、水密性を有した回転支持体37を介して水槽22の壁で支持し、回転支持体36の内部は大気に開放されている。汚泥回収体33は回転路硬いに対して水平方向において近接配設される。水平方向とは水平状であることを含む。   On the other hand, the sludge transfer rotating body 33 made of a non-magnetic material used for transferring the magnetically separated magnetic floc is rotated by a motor 35 via a shaft 34 and rotated. At the end, the shaft 34 is supported by the wall of the water tank 22 by the water-tight rotating support 36, and at the other end, the outer periphery of the rotating body 33 is connected to the water tank through the water-tight rotating support 37. The inner wall of the rotary support 36 is open to the atmosphere. The sludge collection body 33 is disposed close to the rotation path in the horizontal direction. The horizontal direction includes being horizontal.
前記磁石回転体29は、前記汚泥回収回転体33の大気開放面から汚泥回収回転体33の内部に挿入され、洗浄水で洗い流された磁性フロック16群が停留する、すなわち回転ドラム側の位置に接近するように設置される。ここで本実施例では、汚泥回収回転体33の軸心と磁石回転体29の回転体30の軸心とは、ずれて配置されている。すなわち、汚泥回収体の軸心と軸心と磁石回転体29の軸心とは偏心している。図に示していないが、磁石回転体29は所定の場所に位置するように、水槽22の一部にボルト等で固定される。汚泥回収回転体33と回転体30の回転方向は、同一方向で、磁気吸引した磁性フロック16群を大気側に移動させる方向に回転する。両者の回転数は、同一でも、異なっても良い。本実施例の場合は、磁石側の回転体30側の回転数が汚泥回収回転体33の回転数より多い。すなわち回転速度が速い。   The magnet rotating body 29 is inserted into the sludge collecting rotating body 33 from the air release surface of the sludge collecting rotating body 33, and the magnetic flocs 16 group washed away with the washing water is stopped, that is, at the position on the rotating drum side. Installed to approach. Here, in the present embodiment, the axis of the sludge recovery rotating body 33 and the axis of the rotating body 30 of the magnet rotating body 29 are shifted from each other. That is, the axis and axis of the sludge collecting body and the axis of the magnet rotating body 29 are eccentric. Although not shown in the drawing, the magnet rotating body 29 is fixed to a part of the water tank 22 with a bolt or the like so as to be located at a predetermined place. The rotation direction of the sludge collection | recovery rotary body 33 and the rotary body 30 is the same direction, and rotates to the direction which moves the magnetic flock 16 group magnetically attracted to the atmosphere side. Both rotation speeds may be the same or different. In the case of the present embodiment, the rotational speed on the magnet-side rotating body 30 side is greater than the rotational speed of the sludge collecting rotating body 33. That is, the rotation speed is fast.
このように、汚泥回収回転体33に近接配置される磁石回転体2を回転式としているので、被処理水の水面が上下に変動しても水面位置での磁気力が周期的に強くなるので、水面近傍に多数存在する磁性フロックは良好に磁気吸引されることになる。   As described above, since the magnet rotating body 2 disposed close to the sludge collecting rotating body 33 is a rotary type, even if the water level of the water to be treated fluctuates up and down, the magnetic force at the water surface position periodically becomes stronger. Many magnetic flocs existing in the vicinity of the water surface are magnetically attracted satisfactorily.
洗い落ちて水面近傍に停留する磁性フロック16群は、磁石回転体29の磁場により磁石側に吸引されて移動し、磁石回転体29の外側を回転する汚泥回収回転体33の外表面に付着したのち、汚泥回収回転体33の回転にともなって、大気中に露出する。大気中において、磁性フロック16群中の余分な水分は重力により回転体33面上を流下し、磁性フロック16群は更に濃縮される。ここで、磁性フロックの含水率は97%程度まで低下する。   The group of magnetic flocs 16 that are washed away and stay near the water surface are attracted and moved to the magnet side by the magnetic field of the magnet rotating body 29, and are attached to the outer surface of the sludge collecting rotating body 33 that rotates outside the magnet rotating body 29. After that, the sludge collection rotating body 33 is exposed to the atmosphere as it rotates. In the atmosphere, excess water in the magnetic floc 16 group flows down on the surface of the rotating body 33 due to gravity, and the magnetic floc 16 group is further concentrated. Here, the moisture content of the magnetic floc decreases to about 97%.
汚泥回収回転体33面上の濃縮された磁性フロック16群は、汚泥回収回転体33の回転により移動する。このとき、汚泥回収回転体33の軸心と回転体30の軸心とは、ずれて配置されているため、すなわち磁場強度の大小の空間を移動するようにされているため、小の空間で磁性フロックは強く吸引され、磁石回転体29から次第に遠ざかると、磁気吸引力は磁石回転体29から離れるに従って急激に低減する。磁性フロック16群は、掻き取るように水槽22に一部支持されたへら38によって、汚泥回収回転体33面上でから剥離され、スラッジ回収槽39に重力で落下し、スラッジとして分離捕集される。   The concentrated magnetic flocs 16 group on the surface of the sludge collecting rotator 33 are moved by the rotation of the sludge collecting rotator 33. At this time, since the axial center of the sludge recovery rotating body 33 and the axial center of the rotating body 30 are arranged so as to be shifted, that is, moved in a space with a large and small magnetic field strength, in a small space. The magnetic flocs are strongly attracted, and when the magnetic flocs are gradually moved away from the magnet rotating body 29, the magnetic attraction force is rapidly reduced as the distance from the magnet rotating body 29 is increased. The magnetic flocks 16 are separated from the surface of the sludge collection rotating body 33 by the spatula 38 partially supported by the water tank 22 so as to be scraped off, fall into the sludge collection tank 39 by gravity, and are separated and collected as sludge. The
排出されたスラッジは、配管40を通じて遠心分離機やベルトプレス等の脱水装置41に導入され、運搬時にスラッジから水が漏れないように含水率を約85%以下に、またコンポスト時の有機物を分解する微生物の活性化を図るれ含水率を約75%に濃縮された高濃度スラッジは、配管42の通じてスラッジ槽地43に貯められる。スラッジはトラックで処分場や焼却場や堆肥処理場に運搬される。   The discharged sludge is introduced into a dewatering device 41 such as a centrifuge or a belt press through a pipe 40, the water content is reduced to about 85% or less so that water does not leak from the sludge during transportation, and organic substances during composting are decomposed. The high-concentration sludge concentrated to about 75% by activating the microorganisms to be stored is stored in the sludge tank 43 through the pipe 42. The sludge is transported by truck to a disposal site, incineration plant or composting plant.
脱水装置で脱水された処理汚水は、配管44を通じて処理汚水槽45に入り、ポンプ46で加圧された後、配管47を通って原水槽1に戻り、再び被処理工程に導入される。   The treated sewage dehydrated by the dehydrator enters the treated sewage tank 45 through the pipe 44, is pressurized by the pump 46, returns to the raw water tank 1 through the pipe 47, and is again introduced into the treatment process.
運転制御装置48では、原水の
・ 液面
・ 濁度
・ 温度
・ ph値
等をセンサー49で計測し、その情報を運転制御装置48に信号線50で送信する。その情報を基に、良好な磁性フロックを生成するに最適な
・ 薬剤(ph調整剤、磁性粉、凝集剤)の添加量、
を、前もって入力した最適量算出プログラムで計算し、その制御情報を薬剤槽5に信号線51を経由して送信し、最適量を添加する。また、同時に、
・ 攪拌モータの回転数
・ 攪拌槽での停留時間
を運転制御装置48内で算出し、その制御情報をモータ8に信号線52を経由して送信し、最適回転数で攪拌翼9を回転させ、信号線53を経由して送信し、攪拌槽での停留時間を確定するポンプ3の吐出量を制御する。
In the operation control device 48, raw water, liquid level, turbidity, temperature, ph value and the like are measured by the sensor 49, and the information is transmitted to the operation control device 48 through the signal line 50. Based on the information, it is optimal for producing good magnetic floc. ・ Amount of drug (ph adjuster, magnetic powder, flocculant) added,
Is calculated by the optimum amount calculation program inputted in advance, and the control information is transmitted to the medicine tank 5 via the signal line 51 to add the optimum amount. At the same time,
The number of rotations of the stirring motor The stop time in the stirring tank is calculated in the operation control device 48, and the control information is transmitted to the motor 8 via the signal line 52 to rotate the stirring blade 9 at the optimum number of rotations. , And transmitted via the signal line 53 to control the discharge amount of the pump 3 for determining the stopping time in the stirring tank.
また、良好な磁性フロックを生成するに最適な
・ 薬剤(高分子ポリマー)の添加量、
を、前もって入力した最適量算出プログラムで計算し、その制御情報を薬剤槽11に信号線54を経由して送信し、最適量を添加する。また、同時に、
・ 攪拌モータの回転数
を運転制御装置48内で算出し、その制御情報をモータ14に信号線55を経由して送信し、最適回転数で攪拌翼15を回転させる。
In addition, it is ideal for producing good magnetic flocs.
Is calculated by the optimum amount calculation program inputted in advance, and the control information is transmitted to the medicine tank 11 via the signal line 54 to add the optimum amount. At the same time,
The rotation speed of the stirring motor is calculated in the operation control device 48, and the control information is transmitted to the motor 14 via the signal line 55, and the stirring blade 15 is rotated at the optimal rotation speed.
一方、磁気分離浄化装置19では、水槽22内の被処理水17の液面をセンサー56で計測し、その情報を運転制御装置48に信号線57で送信する。その情報を基に、被処理水の液面位置が、磁石回転体29の設置位置のほぼ中央部、すなわち磁石回転体29が発生する磁場の平均値が最大の位置に来るように、回転ドラム20の最適な回転数および磁性フロック16群の回収速度の適正速度を、前もって入力した最適量算出プログラムで計算し、その制御信号を回転ドラムの回転モータ(図示せず)に信号線58を経由して送信し、また、信号線59を経由してモータ35に送信し、それぞれ最適の回転数に制御する。   On the other hand, in the magnetic separation and purification device 19, the liquid level of the water to be treated 17 in the water tank 22 is measured by the sensor 56, and the information is transmitted to the operation control device 48 through the signal line 57. Based on this information, the rotating drum is arranged so that the liquid surface position of the water to be treated is substantially at the center of the installation position of the magnet rotor 29, that is, the average value of the magnetic field generated by the magnet rotor 29 is at the maximum position. The optimum rotational speed of 20 and the appropriate recovery speed of the magnetic floc 16 group are calculated by the optimum amount calculation program inputted in advance, and the control signal is sent to the rotary drum rotary motor (not shown) via the signal line 58. Then, the signal is transmitted to the motor 35 via the signal line 59, and each is controlled to an optimum rotation speed.
磁石回転体29の磁界で、洗浄した磁性フロック16群を磁気吸引するためには、水槽22内の被処理水の水面がほぼ磁石回転体29の磁界の中央部、すなわち図2におけるA−A断面の位置にあることが望ましい。前記水面が記A−A断面の位置よりも低い場合には、前記水面より低い位置でしか磁性フロック16群を、汚泥回収回転体33の表面に付着できない。ここで、磁石回転体29が静止している場合、磁石回転体29が発生する磁場分布は、並べたそれぞれの永久磁石が、有する磁場分布が磁石面上で不均一であるため、取り付けられた磁石群が発生する磁場分布も不均一となり、磁気吸引力の不均一が生じる。   In order to magnetically attract the cleaned magnetic flocs 16 group with the magnetic field of the magnet rotating body 29, the water surface of the water to be treated in the water tank 22 is substantially at the center of the magnetic field of the magnet rotating body 29, that is, AA in FIG. It is desirable to be at the position of the cross section. When the water surface is lower than the position of the AA cross section, the magnetic floc 16 group can be attached to the surface of the sludge recovery rotating body 33 only at a position lower than the water surface. Here, when the magnet rotating body 29 is stationary, the magnetic field distribution generated by the magnet rotating body 29 is attached because the arranged permanent magnets have non-uniform magnetic field distribution on the magnet surface. The magnetic field distribution generated by the magnet group is also non-uniform, and the magnetic attractive force is non-uniform.
したがって、洗浄された磁性フロック16群が多数停留する前記水面が、磁気吸引力の弱い部位にある場合には、磁性フロック16群を磁気分離して回収する処理性能が低下する。しかし、磁石回転体29が回転する本実施例では、前記水面部に、必ず磁場分布の強い磁場部分が短い周期で通過させられるので、前記水面部の多数の磁性フロック16群を磁気吸引して汚泥回収回転体33の外表面に付着させ、その磁場を汚泥回収回転体33の移動速度とほぼ同じにすることにより、移動方法に磁気吸引力を保持しながら磁性フロック16群を回転体30で移送できるので、磁性フロックの回収処理性能が低下することを防止できる。   Accordingly, when the water surface where a large number of the washed magnetic flocs 16 stays is in a portion where the magnetic attractive force is weak, the processing performance of magnetically separating and recovering the magnetic flocs 16 is deteriorated. However, in the present embodiment in which the magnet rotating body 29 rotates, a magnetic field portion having a strong magnetic field distribution is always passed through the water surface portion in a short period. Therefore, a large number of magnetic flocks 16 on the water surface portion are magnetically attracted. The magnetic floc 16 group is attached to the outer surface of the sludge collecting rotator 33 and the magnetic field is made substantially the same as the moving speed of the sludge collecting rotator 33, so that the magnetic floc 16 group is held by the rotator 30 while maintaining the magnetic attraction force. Since it can transfer, it can prevent that the collection processing performance of a magnetic floc falls.
また反対に、前記水面が、前記A−A断面の位置よりも高い場合には、前記水面より高い位置に多数の磁性フロック16群が停留するが、磁場が弱いために汚泥回収回転体33の表面に付着しにくい。ここで、磁石回転体29が静止している場合、前記した場合と同様に、磁石回転体29が発生する磁場分布は不均一となり、磁気吸引力の不均一が生じる。したがって、水面が磁気吸引力の弱い部位にある場合には、磁性フロック16群の回収性能が低下する。しかし、磁石29が回転する本実施例では、前記水面部に、磁石の形体に対応して、必ず磁場分布の強い磁場部分が短い周期で通過させられるので、高い水面部分の磁性フロック16群を磁気吸引して汚泥回収回転体33の外表面に付着させ、その磁場を汚泥回収回転体33の移動速度とほぼ同じにすることにより、移動方法に磁気吸引力を保持しながら磁性フロック16群を回転体30で移送できるので、磁性フロックの回収処理性能が低下することを防止できる。   On the other hand, when the water surface is higher than the position of the AA cross section, a large number of magnetic flocs 16 groups remain at a position higher than the water surface. Hard to adhere to the surface. Here, when the magnet rotating body 29 is stationary, the magnetic field distribution generated by the magnet rotating body 29 becomes non-uniform and the magnetic attractive force becomes non-uniform as in the case described above. Therefore, when the water surface is at a site where the magnetic attractive force is weak, the collection performance of the magnetic flock 16 group is lowered. However, in the present embodiment in which the magnet 29 rotates, a magnetic field portion having a strong magnetic field distribution is always passed through the water surface portion in a short period corresponding to the shape of the magnet. The magnetic floc 16 group is attached to the outer surface of the sludge collecting rotator 33 by magnetic attraction, and the magnetic field is made substantially the same as the moving speed of the sludge collecting rotator 33 to maintain the magnetic attraction force in the moving method. Since it can transfer with the rotary body 30, it can prevent that the collection processing performance of a magnetic floc falls.
また、水槽22内の被処理水の液面が、網21の回転数の不足等により網21での濾過量が流入量より低下した場合等に生じる、水槽22内の被処理水の液面が上昇した場合、水槽22内の被処理水側からスラッジ回収槽39内に被処理水が壁60を越えて越流しないように、越流水回収槽61を設け、越流水は配管62を通り、処理汚水槽45に入り、ポンプ46で加圧された後、配管47を通って原水槽1に戻る。   Further, the liquid level of the water to be treated in the water tank 22 is generated when the liquid level of the water to be treated in the water tank 22 is lower than the inflow amount due to insufficient rotation of the net 21 or the like. When the water rises, the overflow water recovery tank 61 is provided so that the water to be processed does not overflow the sludge recovery tank 39 from the side of the water to be processed in the water tank 22 beyond the wall 60, and the overflow water passes through the pipe 62. Then, after entering the treated wastewater tank 45 and being pressurized by the pump 46, it returns to the raw water tank 1 through the pipe 47.
本構造により、水槽22内の被処理水の液面が上昇し壁60を越えた被処理水17は、スラッジ槽39に流入せずに越流水回収槽61に流入する。したがって、スラッジ槽39に回収した高濃度のスラッジが被処理水の流入により水の含水率が上昇し、低濃度になりスラッジ体積が増加し、スラッジ処理コストの増加を防止することができる。   With this structure, the level of the water to be treated in the water tank 22 rises and exceeds the wall 60, and the treated water 17 does not flow into the sludge tank 39 but flows into the overflow water recovery tank 61. Therefore, the high-concentration sludge collected in the sludge tank 39 is increased in water content due to the inflow of the water to be treated, becomes low in concentration, increases the sludge volume, and prevents the sludge treatment cost from increasing.
以上の説明から明らかなように、本実施例によれば、磁石からなる磁性体は、スラッジ回収用の汚泥回収回転体33の内側で、回転できるので磁石の不均一な磁気吸引力をによる、磁性フロック群の回収能力の不均一性を解消して均一化され、回収性能を維持し浄化性能を向上することができる効果がある。特に、この構成によれば、回転濾過体と汚泥回収回転体33との間で生じやすかったつまり現象を回避するのに有効である。   As is clear from the above description, according to the present embodiment, the magnetic body made of a magnet can be rotated inside the sludge collection rotating body 33 for sludge collection, and therefore, due to the non-uniform magnetic attraction force of the magnet. The non-uniformity of the recovery capability of the magnetic floc group is eliminated and uniformed, and there is an effect that the recovery performance can be maintained and the purification performance can be improved. In particular, this configuration is effective in avoiding the phenomenon that is likely to occur between the rotary filter body and the sludge recovery rotary body 33.
また、被処理水槽と隣接する高濃度スラッジ回収槽の間に、越流水回収槽を設けることにより、被処理水槽の水位が上昇した場合に、被処理水が越流水回収槽に流入し、越流水が高濃度スラッジ回収槽は流入しないので、高濃度スラッジ回収槽に回収した高濃度スラッジが被処理水で薄まり、スラッジ体積が増加し、スラッジ処理コストの増加を防止することができる効果がある。   In addition, by providing an overflow water recovery tank between the high-concentration sludge recovery tank adjacent to the target water tank, when the water level of the target water tank rises, the water to be processed flows into the overflow water recovery tank, Since flowing water does not flow into the high-concentration sludge collection tank, the high-concentration sludge collected in the high-concentration sludge collection tank is diluted with the water to be treated, and the sludge volume increases, thereby preventing an increase in sludge treatment cost. .
図4および図5に本発明になる他の実施例を示す。先の実施例と同一の構成には同一の番号を付し、説明が重複しないようにする。他の実施例についても同じである。これらの図が図2および図3と異なる点は、磁石回転体(実施例1の29に相当)68の回転体66の外面を汚泥回収回転体33の内側いっぱいに大きくし、磁石回転体68と汚泥回収回転体33の軸心をほぼ一致させ、さらに、へら38による汚泥回収回転体33上の磁性フロック16群をスラッジ回収槽39側に機械的な排出手段である回転翼63を設けた点にある。フッ化化合物等の付着しにくい材料で製作した回転翼63はスラッジ排出翼64を取り付けた軸65を駆動源、すなわちモータ(図示せず)で回転駆動する。汚泥回収回転体33と磁石回転体68の回転方向は、同一方向で、磁気吸引した磁性フロック16群を大気側に移動させる方向に回転する。両者の回転数は、同一でも、異なっても良い。本実施例の場合は、磁石側の磁石回転体68側の回転数が汚泥回収回転体33の回転数より若干多い。すなわち回転速度が若干速くなるようにしている。   4 and 5 show another embodiment according to the present invention. The same components as those in the previous embodiment are given the same reference numerals so that the description will not be repeated. The same applies to the other embodiments. 2 and 3 is different from FIG. 2 and FIG. 3 in that the outer surface of the rotating body 66 of the magnet rotating body (corresponding to 29 in the first embodiment) 68 is enlarged to the inside of the sludge collecting rotating body 33 and the magnet rotating body 68 is enlarged. And the axis of the sludge recovery rotator 33 are substantially coincided with each other, and the rotor blade 63 as a mechanical discharge means is provided on the sludge recovery tank 39 side of the magnetic floc 16 group on the sludge recovery rotator 33 by the spatula 38. In the point. A rotary blade 63 made of a material that is difficult to adhere, such as a fluorinated compound, rotates a shaft 65 to which a sludge discharge blade 64 is attached by a drive source, that is, a motor (not shown). The rotation direction of the sludge collection | recovery rotary body 33 and the magnet rotary body 68 is the same direction, and rotates to the direction which moves the magnetic flock 16 group magnetically attracted to the atmosphere side. Both rotation speeds may be the same or different. In the case of the present embodiment, the rotational speed on the magnet rotating body 68 side on the magnet side is slightly higher than the rotational speed of the sludge collecting rotating body 33. That is, the rotation speed is slightly increased.
本実施例によれば、磁石回転体68を構成する磁石67を汚泥回収回転体33の内側に全周に渡り近づけて配置できるので、実施例1で述べた水面が、前記A−A断面の位置よりも高いもしくは低い場合においても、磁石67は汚泥回収回転体33の外面に接する水面の近くに位置し、さらに磁石67が回転するので、磁気吸引力が強く均一に作用する。したがって、前記水面の上下変動に対しても、水面に必ず磁場分布の強い磁場部分が短い周期で通過させられるので、水面部分の多数の磁性フロック16群を磁気吸引して汚泥回収回転体33の外表面に付着させ、その磁場を汚泥回収回転体33の移動速度とほぼ同じ、もしくは磁気力を移動方向に先に進めることにより磁性フロック16群を良好に移動させることができる。   According to the present embodiment, since the magnet 67 constituting the magnet rotating body 68 can be disposed close to the entire circumference of the sludge collecting rotating body 33, the water surface described in the first embodiment has the AA cross section. Even when the position is higher or lower than the position, the magnet 67 is located near the water surface in contact with the outer surface of the sludge collection rotating body 33, and the magnet 67 further rotates, so that the magnetic attractive force acts strongly and uniformly. Therefore, since the magnetic field portion having a strong magnetic field distribution is always passed through the water surface in a short cycle even with respect to the vertical fluctuation of the water surface, a large number of magnetic flocs 16 group on the water surface portion are magnetically attracted and the sludge recovery rotating body 33 The magnetic flocs 16 group can be favorably moved by attaching the magnetic field to the outer surface and moving the magnetic field substantially the same as the moving speed of the sludge collecting rotator 33 or by moving the magnetic force forward in the moving direction.
また、掻き取り部のへら38先端の部位と磁石67は近い位置にあるので、へら38でかきとられた汚泥回収回転体33上の磁性フロック16には、大きな磁気吸引力が作用しこのままでは磁性フロック16群が自重でへら38上を移動できないので、スラッジ排出翼64でスラッジ回収槽39側に移動させ磁石31から離し、磁気吸引力を小さくして自重で移動できる効果が生じる。   Further, since the tip of the spatula 38 of the scraping part and the magnet 67 are located close to each other, a large magnetic attraction force acts on the magnetic floc 16 on the sludge recovery rotating body 33 scraped by the spatula 38, and it remains as it is. Since the magnetic floc 16 group cannot move on the spatula 38 due to its own weight, the sludge discharge blade 64 moves it to the sludge collection tank 39 side and separates it from the magnet 31, thereby reducing the magnetic attractive force and moving it by its own weight.
したがって、本実施例では、水槽22内での被処理水の水面が変動する場合においても、磁性フロックを良好に除去し浄化性能の低下を防止できる効果がある。   Therefore, in this embodiment, even when the surface of the water to be treated in the water tank 22 fluctuates, there is an effect that the magnetic floc can be removed well and the purification performance can be prevented from being lowered.
図6に本発明になる他の実施例を示す。これらの図が図4および図5と異なる点は、円筒状の磁石回転体69を汚泥回収回転体33の内側いっぱいに大きくし、前記汚泥回収回転体33と円筒状の磁石回転体69をボルト70で一体化して構成したことにある。   FIG. 6 shows another embodiment according to the present invention. 4 and FIG. 5 is that the cylindrical magnet rotating body 69 is enlarged all the inside of the sludge collecting rotating body 33, and the sludge collecting rotating body 33 and the cylindrical magnet rotating body 69 are bolted. This is because it is integrated with 70.
本実施例によれば、円筒状の磁石回転体69を汚泥回収回転体33と一体化することで回転できるので、円筒状の磁石回転体69回転用のモータを省略でき、さらに装置コストを低減することができる効果がある。   According to the present embodiment, since the cylindrical magnet rotating body 69 can be rotated by being integrated with the sludge collecting rotating body 33, the motor for rotating the cylindrical magnet rotating body 69 can be omitted, and the apparatus cost is further reduced. There is an effect that can be done.
また、磁場発生手段として永久磁石を使用した場合を示したが、常電導電磁石や冷凍機等で冷却した超電導電磁石を使用しても、同様な効果が生じる。   Moreover, although the case where the permanent magnet was used as a magnetic field generation | occurrence | production means was shown, even if it uses the superconducting electromagnet cooled by the normal conducting electromagnet or the refrigerator, the same effect will arise.
なお、以上の実施例では網21をドラム状に形成した場合について説明したが、網21をディスク状に構成して、このディスクを縦方向に複数枚配置して装置を構成した場合でも同様な効果が生じる。   In the above embodiment, the case where the net 21 is formed in a drum shape has been described. However, the same applies to the case where the net 21 is configured in a disk shape and a plurality of the disks are arranged in the vertical direction to configure the apparatus. An effect is produced.
先の実施例1−3にあっては回転濾過体を使用していたが、回転濾過体を使用することなく、汚泥回収回転体33の表面上に磁気スラッグ、すなわち汚泥を磁気力に吸引し、載置するようにすることも可能である。   In the previous Example 1-3, the rotary filter was used, but without using the rotary filter, the magnetic slug, that is, sludge was attracted to the magnetic force on the surface of the sludge recovery rotary body 33. It is also possible to place them.
すなわち、この実施例は、被処理流体に含まれる汚泥を磁気力を利用して分離し、被処理流体を浄化する磁気分離浄化装置を、水槽内に配設され、水平方向に配置され、回転に伴なって表面上に汚泥および磁気物質を吸引、載置して搬送する円筒状の汚泥回収回転体と、該汚泥回収回転体内に軸心を有し、回転体と該回転体の円周上に取り付けた複数の磁石とからなり、少なくとも前記回転濾過体に位置する側を前記汚泥回収回転体の内周面に近接配設され、前記回転濾過体によって濾過された磁気物質を前記汚泥回収回転体の表面上に磁気吸引することによって汚泥を前記汚泥回収回転体の表面上に移送させる磁気回転体と、前記汚泥回収回転体の表面上を搬送される汚泥および磁気物質を掻き取る掻き取り装置とで構成する。   That is, in this embodiment, a magnetic separation and purification device that separates sludge contained in a fluid to be treated using magnetic force and purifies the fluid to be treated is disposed in a water tank, horizontally disposed, and rotated. A cylindrical sludge recovery rotating body that sucks, places, and conveys sludge and magnetic material on the surface, and has a shaft center in the sludge recovery rotating body, and the circumference of the rotating body and the rotating body A plurality of magnets mounted thereon, at least a side located on the rotary filter body is disposed close to an inner peripheral surface of the sludge recovery rotary body, and the magnetic substance filtered by the rotary filter body is recovered in the sludge A magnetic rotating body for transferring sludge onto the surface of the sludge recovery rotating body by magnetically attracting onto the surface of the rotating body, and a scraping that scrapes off the sludge and magnetic material conveyed on the surface of the sludge recovery rotating body. It consists of a device.
この構成にあっても、汚泥回収回転体33とこの中に配設され、回転する磁性体とは一体ではなく、別個として構成されているために磁気物質に作用する磁気力は均一化されるから吸着制御がよりやり易いものとなる。更に、この構成によれば、汚泥回収回転体33と磁性体との回転位相を容易に変えることができ、磁性スラッジの吸引および掻き取りに便利である。   Even in this configuration, the sludge collection rotating body 33 and the rotating magnetic body disposed therein are not integrated with each other, but are configured separately, so that the magnetic force acting on the magnetic substance is made uniform. Therefore, the adsorption control becomes easier. Furthermore, according to this configuration, the rotational phase between the sludge collection rotating body 33 and the magnetic body can be easily changed, which is convenient for suction and scraping of magnetic sludge.
本発明の一実施例の磁気分離浄化システムの構成図。The block diagram of the magnetic separation purification system of one Example of this invention. 本発明の一実施例の磁気分離浄化装置の断面図。Sectional drawing of the magnetic separation purification apparatus of one Example of this invention. 図2のA−A断面図。AA sectional drawing of FIG. 本発明の他の実施例の磁気分離浄化装置の断面図。Sectional drawing of the magnetic separation purification apparatus of the other Example of this invention. 図4のA−A断面図。AA sectional drawing of FIG. 本発明の他の実施例の磁気分離浄化装置の断面図。Sectional drawing of the magnetic separation purification apparatus of the other Example of this invention.
符号の説明Explanation of symbols
16…磁性フロック、17…被処理水、19…磁気分離浄化装置、21…網、22…水槽、29…磁石回転体、30…汚泥回収回転体、31…永久磁石、33…回転体、38…へら、39…汚泥回収槽、61…汚水回収槽。
DESCRIPTION OF SYMBOLS 16 ... Magnetic flock, 17 ... Treated water, 19 ... Magnetic separation and purification apparatus, 21 ... Net, 22 ... Water tank, 29 ... Magnet rotating body, 30 ... Sludge collection rotating body, 31 ... Permanent magnet, 33 ... Rotating body, 38 ... spatula, 39 ... sludge collection tank, 61 ... sewage collection tank.

Claims (8)

  1. 被処理流体に含まれる汚泥を磁気力を利用して分離し、被処理流体を浄化する磁気分離浄化装置において、
    水槽内に配設され、円筒状の濾過網を有し、磁気物質を含む被処理流体から汚泥および磁気物質を濾過する回転濾過体と、
    該回転濾過体に対して水平方向において近接対峙し、回転に伴なって表面上に汚泥および磁気物質を載置して搬送する円筒状の汚泥回収回転体と、
    該汚泥回収回転体内に軸心を有し、回転体と該回転体の円周上に取り付けた複数の磁石とからなり、少なくとも前記回転濾過体に位置する側を前記汚泥回収回転体の内周面に近接配設され、前記回転濾過体によって濾過された磁気物質を前記汚泥回収回転体の表面上に磁気吸引することによって汚泥を前記汚泥回収回転体の表面上に移送させる磁気回転体と、
    前記汚泥回収回転体の表面上を搬送される汚泥および磁気物質を掻き取る掻き取り装置と
    を含んで構成されることを特徴とする磁気分離浄化装置。
    In the magnetic separation and purification device that separates sludge contained in the fluid to be treated using magnetic force and purifies the fluid to be treated.
    A rotating filter body disposed in a water tank, having a cylindrical filtration net and filtering sludge and magnetic material from a fluid to be treated containing magnetic material;
    A cylindrical sludge recovery rotating body that faces the rotating filter body in the horizontal direction and places and transports sludge and a magnetic substance on the surface as it rotates;
    The sludge collection rotating body has an axis, and is composed of a rotating body and a plurality of magnets mounted on the circumference of the rotating body, and at least the side located on the rotary filter body is the inner circumference of the sludge collection rotating body A magnetic rotating body that is disposed close to a surface and magnetically attracts a magnetic substance filtered by the rotary filtering body onto the surface of the sludge collecting rotating body, thereby transferring the sludge onto the surface of the sludge collecting rotating body;
    A magnetic separation and purification device comprising: a scraping device that scrapes off the sludge and the magnetic substance conveyed on the surface of the sludge recovery rotating body.
  2. 請求項1において、前記磁気回転体は、前記汚泥回収回転体に対して偏心配設されることを特徴とする磁気分離浄化装置。   2. The magnetic separation and purification device according to claim 1, wherein the magnetic rotating body is eccentrically arranged with respect to the sludge collecting rotating body.
  3. 請求項1において、前記磁気回転体は、前記汚泥回収回転体に対して同心配設され、駆動源によって回転駆動される回転翼を前記汚泥回収回転体の表面に近接して上側に設けたことを特徴とする磁気分離浄化装置。   2. The magnetic rotating body according to claim 1, wherein the magnetic rotating body is disposed concentrically with the sludge collecting rotating body, and a rotating blade driven to rotate by a driving source is provided on the upper side in the vicinity of the surface of the sludge collecting rotating body. Magnetic separation and purification device characterized by the above.
  4. 請求項3において、前記汚泥回収回転体と前記磁気回転体とを一体化して回転駆動源を共通としたことを特徴とする磁気分離浄化装置。   4. The magnetic separation and purification device according to claim 3, wherein the sludge recovery rotating body and the magnetic rotating body are integrated to share a rotational drive source.
  5. 請求項1から4のいずれかにおいて、前記水槽からの被処理流体が越流し流れ込む越流水捕集装置を設けたことを特徴とする磁気分離浄化装置。   5. The magnetic separation and purification device according to claim 1, further comprising an overflow water collecting device through which the fluid to be treated from the water tank flows and flows.
  6. 被処理流体に含まれる汚泥を磁気力を利用して分離し、被処理流体を浄化する磁気分離浄化装置において、
    水槽内に配設され、水平方向に配置され、回転に伴なって表面上に汚泥および磁気物質を吸引、載置して搬送する円筒状の汚泥回収回転体と、
    該汚泥回収回転体内に軸心を有し、回転体と該回転体の円周上に取り付けた複数の磁石とからなり、少なくとも前記回転濾過体に位置する側を前記汚泥回収回転体の内周面に近接配設され、前記回転濾過体によって濾過された磁気物質を前記汚泥回収回転体の表面上に磁気吸引することによって汚泥を前記汚泥回収回転体の表面上に移送させる磁気回転体と、
    前記汚泥回収回転体の表面上を搬送される汚泥および磁気物質を掻き取る掻き取り装置と
    を含んで構成されることを特徴とする磁気分離浄化装置。
    In the magnetic separation and purification device that separates sludge contained in the fluid to be treated using magnetic force and purifies the fluid to be treated.
    A cylindrical sludge recovery rotating body that is disposed in the water tank, is disposed in the horizontal direction, and sucks, places, and conveys sludge and magnetic substances on the surface as it rotates;
    The sludge collection rotating body has an axis, and is composed of a rotating body and a plurality of magnets mounted on the circumference of the rotating body, and at least the side located on the rotary filter body is the inner circumference of the sludge collection rotating body A magnetic rotating body that is disposed close to a surface and magnetically attracts a magnetic substance filtered by the rotary filtering body onto the surface of the sludge collecting rotating body, thereby transferring the sludge onto the surface of the sludge collecting rotating body;
    A magnetic separation and purification device comprising: a scraping device that scrapes off the sludge and the magnetic substance conveyed on the surface of the sludge recovery rotating body.
  7. 被処理流体に含まれる汚泥を磁気力を利用して分離し、被処理流体を浄化する磁気分離浄化方法において、
    水槽内に配設され、円筒状の濾過網を有する回転濾過体によって磁気物質を含む被処理体から汚泥および磁気物質を濾過し、
    円筒状の汚泥回収回転体内に軸心を有し、少なくとも前記回転濾過体に位置する側を前記汚泥回収回転体の内周面に近接配設され、円周配設された複数の磁石とから磁気回転体によって、前記回転濾過体によって濾過され、該回転濾過体との間の被処理流体の水面上に停留する磁気物質を前記汚泥回収回転体の表面上に磁気吸引して汚泥を前記汚泥回収回転体の表面上に移送し、
    前記汚泥回収回転体の表面上を搬送される汚泥および磁気物質を含む磁気ブロックを掻き取ること
    を特徴とする磁気分離浄化方法。
    In a magnetic separation and purification method for separating sludge contained in a fluid to be treated using magnetic force and purifying the fluid to be treated,
    The sludge and the magnetic substance are filtered from the target object including the magnetic substance by the rotary filter having a cylindrical filtration net disposed in the water tank,
    A cylindrical sludge collection rotating body has an axial center, and at least the side located on the rotary filter body is disposed close to the inner peripheral surface of the sludge collection rotation body, and a plurality of circumferentially arranged magnets A magnetic substance filtered by the rotary filter and retained on the surface of the fluid to be treated between the rotary filter and the magnetic filter is magnetically attracted onto the surface of the sludge recovery rotary body to sludge the sludge. Transferred to the surface of the recovery rotor,
    A magnetic separation and purification method characterized by scraping off a magnetic block containing sludge and a magnetic substance conveyed on the surface of the sludge recovery rotating body.
  8. 請求項7において、前記磁気回転体を前記汚泥回収回転体に対して偏心配設することによって前記汚泥回収回転体は、磁気強度の大小の空間を回転することを特徴とする磁気分離浄化方法。   8. The magnetic separation and purification method according to claim 7, wherein the sludge recovery rotator rotates in a space having a large and small magnetic strength by disposing the magnetic rotator eccentrically with respect to the sludge recovery rotator.
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