JPS61502038A - Polluted liquid electrochemical purification device - Google Patents

Polluted liquid electrochemical purification device

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Publication number
JPS61502038A
JPS61502038A JP59503764A JP50376484A JPS61502038A JP S61502038 A JPS61502038 A JP S61502038A JP 59503764 A JP59503764 A JP 59503764A JP 50376484 A JP50376484 A JP 50376484A JP S61502038 A JPS61502038 A JP S61502038A
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Prior art keywords
foam
liquid
chamber
supply pipe
collector
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Pending
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JP59503764A
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Japanese (ja)
Inventor
ナザリアン ミロン ミグラノビチ
エフイモフ ビアチエスラフ テイホノビチ
ポゴレロフ ユリ イグナテイエビチ
エサウロフ セルゲイ ミハイロビチ
マシエンコ エフゲニ アントノビチ
ザイコフスキ ビタリ ミトロフアノビチ
タラセンコ ビタリ エメリアノビチ
アレクセエフ ブラデイミル バジリエビチ
シヤテイ パベル パブロビチ
アクセンコ アレクサンドル アレクサンドロビチ
コリアダ ブラデイミル アレクサンドロビチ
マタエフ アルカデイ ロマノビチ
Original Assignee
ハルコフスキ− ポリテフニチエスキ− インステイチユト イメニ ブイ.アイ.レニナ
ハルコフスキ− モトロストロイテルニイ ザボド“セルプ イ モロト”
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Publication of JPS61502038A publication Critical patent/JPS61502038A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/465Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D17/00Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02Separation of non-miscible liquids
    • B01D17/0205Separation of non-miscible liquids by gas bubbles or moving solids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D17/00Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02Separation of non-miscible liquids
    • B01D17/04Breaking emulsions
    • B01D17/047Breaking emulsions with separation aids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D17/00Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/06Separation of liquids from each other by electricity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D19/00Degasification of liquids
    • B01D19/02Foam dispersion or prevention
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/463Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • C02F1/46109Electrodes
    • C02F2001/46152Electrodes characterised by the shape or form
    • C02F2001/46157Perforated or foraminous electrodes

Abstract

(57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。 (57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】[Detailed description of the invention]

汚濁液電気化学的浄化装置 技術分野 本発明は一般に液体浄化技術、さらに特定すれば汚濁液の電気化学的浄化装置に 関する。 発明の背景 現在知られている汚濁液浄化装置のなかで、液体の電気化学的浄化装置、特に電 気的凝析および電気的浮選による廃水処理装置は、その効率が高いので最近その 使用が増加しつつある。 汚濁液の電気化学的浄化を間欠的または連続的に操作する装置が知られており、 なかでも後者がより有望と思われる。 このような一つの装置は、沈降室と、この菅の内部にこれと共軸的に配置された 電気的凝析室と、消耗電極系と、汚濁液供給管と、浄化液排出管と、この装置か ら泡を除去する手段とを有する(米国特許第3.505.188号寥C4,20 4−149.1970年公告を参照)。 この装置の泡除去手段は沈降室の上部に配置した回転スクレーバの形を有する。 この海産出物除去手段の構造的配置は、この海産出物の部分をスクレーバによっ て、沈降室内の液体中にかき落して、浄化された液の流れに同伴させて、装置が ら取出す。勿論これは浄化の質、従って装置の効率に悪影響を与える。 また公知の汚濁液電気化学的処理装置(たとえば、ソ連発明者証第91.4,5 06号TPCC02F 7/46.1982年公告を参照)は、沈降室が浄化液 および廃液の排出管を備え、この沈降室に共軸的に配置された電気的凝析室と連 通し、その底部に消耗電極系を設け、この消耗電極の実質的に上方の位置に汚濁 液供給管、および電解液供給管を有する。さらにこの装置は海産出物除去手段を 有し、これは沈降室の上方に配置された回転管および泡捕集器を有し、空気吹込 器およびじょうごをその一端に備える。 この装置は電気的凝析、室内において金属水酸化物で汚濁液を凝析する間に発生 する海産出物を沈降室から連続的に排出することができる。 しかし、この公知の装置力海産出物排出手段は、操作が複雑であり、かつ泡捕集 器の駆動装置を必要とするので、装置の効率に限界がある欠点を有する。さらに 汚濁液をこの装置に供給する前に、前浄化するために海産出物を反復して使用す る設備が設けられていない。 発明の概要 本発明の目的は、浄化すべき液中において汚濁物が固く締って、その両分が沈降 することを防止する構造の汚濁液電気化学的処理装置を提供することである。 また他の目的は、産出物中に存在する未反応の金属水酸化物を再使用して、浄化 工程をさらに安定化し、装置の効率を向上させ、かつ装置の操作に伴なう費用を 軽減することであこれらの目的、およびその他の利点は、沈降室と、その頂部に 配置した浄化された液の排出管と、その底部に配置された産出物の排出管と、こ の沈降室の上方に配置された空気注入管付き泡捕集器と、この沈降室の内部にこ れと共軸的に配置され、かつ環状隔壁によって沈降室から分離された電気的凝析 室と、この凝析室内の下部に配置された消耗電極と、この消耗電極の下方に配置 された電解液供給管と、この消耗電極の上方に配置されたヘッダと、このヘッダ と接続された汚濁液供給管路とを有する汚濁液電気化学的浄化装置であって、本 発明によって、泡捕集器に泡ダクトを介して連通ずる混合槽を有し、かつ泡捕集 器が環状隔壁と気宙に接続している浄化装置によって達成される。 この配置は、電気的凝析室内で電気化学的に得られた金属酸化物によって汚濁粒 子が凝集する間に生成する産出物を沈降室から連続的に除去することができる。 その結果、産出物は沈降室内に蓄積することな(、泡ダクトを通って混合槽に行 く。この混合槽は汚濁液を連続的に受入れる。産出物は混合槽内で濾床として利 用される。汚濁液はこの濾床を通り、産出物中の未反応金属水酸化物の一部は、 処理のために供給される液体の汚濁粒子を付加的に凝析させる作用をし、こうし て汚濁液を電気的凝析室に送る前に汚濁液を前処理する。これによって、装置の 効率を16%までだけ向上させ、この処理で消費する電力量を減少させ、消耗電 極の金属の溶解速度を低下させる。 泡捕集器に弁付き空気排出管を設け、泡捕集器内に環状隔壁の頂部を配置し、泡 捕集器の内面に対して凹部を設けて、環状隔壁との間に環状空間を設けることが 好ましい。また環状隔壁の頂部はテーバ形肩部を有し、この肩部の形が泡捕集器 の形に適合していることが好ましい。 泡捕集器に弁付き空気排出管を設けることによって、大気を注入して、沈降室の 頂部から産出物を送る装置の操作に必要なエネルギーを節減することができる。 環状隔壁の頂部のテーバ形案内肩部は泡捕集器の内面に産出物が沈着することを 減少させて、沈降室内の非消耗電極の表面に付着することを防止する。これによ って操業コストを8〜12%節減することができる。 泡ダクトの内部にアルキメデスらせん形挿入体を設けて、産出物が沈降室から混 合槽に移動することを容易にし、かつ泡ダクトの外側をスチームジャケットで包 み、また鉱酸供給管を設けることがよい。 アルキメデスらせん形挿入体は海産出物がその成分、たとえばオイル、水および 空気に分離することを促進し、従って海産出物の体積を減少させることができる 。 泡ダクト内の海産出物の分離は温度35℃〜80℃においてもっとも良好に行な われ、この温度は汚濁物の種類、および浄化工程中に形成される産出物の物理的 構造によって決められる。産出物の処理は、熱によってこの分離を促進し、泡ダ クトの長さを短かくし、かつ装置の効率を一層向上させることができる。 電気化学的に処理を行なう前に、汚濁液の酸またはアルカリ性を調節するために 、泡ダクトに取付けた導管を通して鉱酸を加えて、液のpHを所望の値にする。 これも電気化学的に生成した金属水酸化物が分散系に作用する凝析工程に有利な 効果を与える。 混合槽の底部は汚濁液を電気的凝析槽に供給する循環管路に導管を介して、連通 させることが好ましい。また混合槽の上部に汚濁液供給管および産出物排出管を 設けることがよい。 沈降室の頂部に蓄積した治産出物は、最初の浄化工程において反応しなかったい くらかの金属水酸化物および金属水酸化物とともに凝析した汚濁物の凝集体を含 むが、混合槽を使用することによって、この治産出物を反復使用して、水酸化物 を汚濁物の前処理凝析に利用することができる。混合槽に供給する産出物の副次 的な効果は、噴霧された汚濁液が一通過する濾床として作用し、未反応の水酸化 物が液中の不純物を凝析させ、汚濁液を電気的凝析室に供給する前に、前浄化を 行ない、これによって装置の効率をさらに向上させ、浄化度を高めることができ る。 4、 Polluted liquid electrochemical purification device Technical field The present invention relates generally to liquid purification technology, and more particularly to electrochemical purification devices for contaminated liquids. related. Background of the invention Among the currently known polluted liquid purification devices, electrochemical purification devices for liquids, especially electric Wastewater treatment equipment by pneumatic coagulation and electrical flotation has recently gained popularity due to its high efficiency. Its use is increasing. Devices are known that operate electrochemical purification of polluted liquid intermittently or continuously. Of these, the latter seems more promising. One such device consists of a sedimentation chamber and a system located inside this tube coaxially therewith. The electrical coagulation chamber, the consumable electrode system, the polluted liquid supply pipe, the purified liquid discharge pipe, and this equipment (U.S. Pat. No. 3.505.188 C4,20) 4-149. See 1970 Publication). The foam removal means of this device are in the form of a rotating scraper located at the top of the settling chamber. The structural arrangement of this marine product removal means is such that a portion of this marine product is removed by a scraper. The device then scrapes it into the liquid in the settling chamber and entrains it with the flow of purified liquid. Take it out. This, of course, has a negative impact on the quality of purification and therefore on the efficiency of the device. Also, known polluted liquid electrochemical treatment devices (for example, Soviet inventor's certificate No. 91.4, 5) No. 06 TPCC02F 7/46.Refer to the 1982 public notice), the sedimentation chamber is and an electrical coagulation chamber coaxially arranged with the settling chamber. A consumable electrode system is provided at the bottom of the consumable electrode system, and a contaminant is provided at a position substantially above the consumable electrode. It has a liquid supply pipe and an electrolyte supply pipe. Additionally, this device has a means of removing marine products. It has a rotating tube and a foam collector placed above the settling chamber, and air blowing A vessel and a funnel are provided at one end. This device uses electrocoagulation, which occurs during the coagulation of polluted liquids with metal hydroxides indoors. Sea products can be continuously discharged from the sedimentation chamber. However, this known device-powered sea product discharge means is complicated to operate and requires foam collection. This method has the disadvantage that the efficiency of the device is limited because it requires a drive device for the device. moreover Repeated use of marine products to pre-purify the polluted liquid before feeding it to this device. There are no facilities provided. Summary of the invention The purpose of the present invention is to solidify the contaminants in the liquid to be purified and to cause both of them to settle. It is an object of the present invention to provide a polluted liquid electrochemical treatment device having a structure that prevents the above. Another objective is to reuse unreacted metal hydroxides present in the output for purification. Further stabilize the process, improve equipment efficiency, and reduce costs associated with equipment operation. These purposes, and other benefits, are in reducing the sedimentation chamber and its top A discharge pipe for the purified liquid located at the bottom of the pipe and a discharge pipe for the product located at the bottom thereof. A foam collector with an air injection tube is placed above the settling chamber, and an electrocoagulant located coaxially with the sedimentation chamber and separated from the settling chamber by an annular partition; chamber, a consumable electrode placed at the bottom of this coagulation chamber, and a consumable electrode placed below this consumable electrode. an electrolyte supply pipe, a header placed above the consumable electrode, and a header placed above the consumable electrode. A polluted liquid electrochemical purification device having a polluted liquid supply pipe connected to According to the invention, the foam collector has a mixing tank that communicates with the foam collector through a foam duct, and the foam collector This is achieved by means of a purification device in which the container is connected to the annular bulkhead and the air space. This arrangement allows particles to be contaminated by electrochemically obtained metal oxides in an electrocoagulation chamber. The product produced during flocculation can be continuously removed from the settling chamber. As a result, the product does not accumulate in the settling chamber (and passes through the foam duct to the mixing tank). Ku. This mixing tank continuously receives the polluted liquid. The output is used as a filter bed in the mixing tank. used. The polluted liquid passes through this filter bed, and some of the unreacted metal hydroxides in the output are It acts to additionally coagulate the contaminant particles in the liquid supplied for treatment and thus to pre-treat the turbid liquid before sending it to the electrocoagulation chamber. This allows the device to Improves efficiency by up to 16%, reduces the amount of power consumed by this process, and reduces power consumption. Reduces the rate of dissolution of metal in the poles. The foam collector is equipped with an air discharge pipe with a valve, and the top of the annular partition is placed inside the foam collector to remove the foam. A recess may be provided on the inner surface of the collector to provide an annular space between the annular partition wall and the annular partition wall. preferable. In addition, the top of the annular partition has a Taber-shaped shoulder, and the shape of this shoulder is a foam collector. It is preferable that it conforms to the shape of By providing a valved air outlet pipe in the foam collector, atmospheric air can be injected into the sedimentation chamber. The energy required to operate the device delivering the output from the top can be saved. A tapered guiding shoulder at the top of the annular bulkhead prevents product from depositing on the inner surface of the foam collector. to prevent it from sticking to the surfaces of the non-consumable electrodes in the settling chamber. This is it Therefore, operating costs can be reduced by 8-12%. An Archimedean helical insert is provided inside the foam duct to allow the output to mix from the settling chamber. The outside of the foam duct is wrapped with a steam jacket to make it easier to move to the tank. It is also recommended to provide a mineral acid supply pipe. Archimedean helical inserts contain marine products as their constituents, such as oil, water and Can promote air separation and thus reduce the volume of sea products . Separation of marine products in foam ducts is best achieved at temperatures between 35°C and 80°C. This temperature depends on the type of contaminant and the physical properties of the products formed during the purification process. Determined by structure. Processing of the output facilitates this separation with heat and The length of the duct can be shortened and the efficiency of the device can be further improved. To adjust the acidity or alkalinity of the pollutant before electrochemical treatment. , mineral acid is added through a conduit attached to the foam duct to bring the pH of the liquid to the desired value. This is also advantageous for the coagulation process in which electrochemically generated metal hydroxide acts on the dispersed system. give effect. The bottom of the mixing tank is connected via a conduit to a circulation line that supplies the polluted liquid to an electric coagulation tank. It is preferable to let In addition, a polluted liquid supply pipe and a product discharge pipe are installed at the top of the mixing tank. It is good to have one. Treatment products that accumulate at the top of the settling chamber should not react during the initial purification process. Contains some metal hydroxides and aggregates of pollutants coagulated with metal hydroxides. However, by using a mixing tank, this treatment product can be used repeatedly to produce hydroxide. can be used for pretreatment coagulation of pollutants. Sub-products fed to the mixing tank The effect is that it acts as a filter bed through which the sprayed pollutant passes through, and removes unreacted hydroxide. Pre-purification is performed to coagulate impurities in the liquid and before the polluted liquid is fed to the electrocoagulation chamber. This can further improve the efficiency of the device and increase the degree of purification. Ru. 4,

【図面の簡単な説明】[Brief explanation of drawings]

本発明を添付図面と関連して、特殊な実施態様について詳細に説明する。図面は 1つであって汚濁液電気化学的浄化装置全体の断面図を示す。 発明を実施するだめの最良の態様 この汚濁液電気化学的浄化装置は、共軸的に配置された沈降室1と、2つの取外 し可能な区画からなる電気的凝析室2とを有する。 電気的凝析室2の下部区画は沈降室1より突出しており、この区画内に消耗電極 3を入れている。電気的凝析室2の上部および下部の区画は相互に隔設されてお り、これらの区画の間に環状間隙4を形成し、これら2つの区画は共通のヘッダ 5を介して相互に接続されており、ヘッダ5の内部は汚濁液供給管6と連通ずる 。 沈降室1と電気的凝析室2との間に環状隔壁7を配置し、これは沈降室1内にお いて浄化される液体の流路を長くする。 有孔非消耗電極8は、電気的凝析室(2)の壁と環状隔壁7とが形成する空間内 で液体の水準より下方において実質的に水平に配置されている。 電気的凝析室2の上方に泡捕集器9があり、これは環状隔壁7と気密に接続され たテーバ形挿入体10によって形成される。泡捕集器9は、沈降室1内における 液体の水準より上方に配置された弁12付き排気管11を有する。 環状隔壁7の上部は泡捕集器9の内面に対して間隙13をあけて泡捕集器9内に 取付けられている。この間隙13は環状凹部14を形成し、この凹部14は、弁 16付きllf路15を介して、電気的凝析室2の下部区画に電解液を供給する 導管17と接続する。環状隔壁7の上部は、泡捕集器9の形に適合する形のテー パ≠形案内肩部19を有する。 泡捕集器9の頂部は泡ダクト20を介して混合槽21と連通ずる。泡ダクト20 は泡捕集器9の上方に配置され、混合槽21の方向にノズルが、向いている注入 管22と、アルキメデスらせん形挿入体23と、鉱酸供給管24とを有する。 泡ダクト20は外側をスチームジャケット25で包み、このジャケット25は伝 熱材供給管26と、凝縮物排出管27とを有する。 混合槽21の内部で、泡ダクト20が接続されている水準より上方において汚濁 液供給管28を配置し、この管の端に液体噴霧手段29がある。混合槽21の内 部に水平な有孔隔壁30があり、これは産出物を液体から分離し、この隔壁30 の上方に、混合槽21から産出物を除去する導管31がある。混合槽21の底部 は導管32および管路33を介して、電気的凝析室2に汚濁液を供給する導管6 と接続する。 沈降室1も浄化液排出管34とスラッジ排出管35とを有する。 この汚濁液電気化学的浄化装置は次のように操作する。 浄化開始前に、電気的凝析室2と沈降室1との内部に電解液、たとえば工業的純 度の水または少量のNaCβを含む水を満たした後に、電極3および8に電圧を 印加して電解液に電流を通し、これによって電極3を陽極的に溶解し、非消耗電 極8の上に気泡を発生させる。 電極3が陽極的に溶解すると、金属水酸化物、たとえばA7!(0)1):+ま たはFe (OH) :lが純粋な電解液中に生成し、この水酸化物は気泡によ って泡捕集器9内の電解液の表面に運ばれて、ここに蓄積する。そして注入管2 2がら噴出する圧縮空気によって泡の層から吹飛ばされて、泡ダク)20を通っ て混合槽21に入る。 しばらくして、汚濁液を噴霧手段29からこの装置に導入し始める。汚濁液のp H値を調節するには、所定量の鉱酸、たとえばHClを導管24から加えること が必要である。 混合槽21内において汚濁粒子と金属水酸化物とが相互作用して、汚濁粒子は相 当に大きな凝集体を形成し、有孔隔壁30の上方に蓄積した後に、導管31を通 して除去される。 こうして凝析した凝集体からなる濾床が混合槽21内で付加的に形成される。混 合槽21内で汚濁物を部分的に浄化した汚濁液は導管6および管路33を通って 環状間隙4に送られた後に、消耗電極系3の真上においてこれから少し離れたと ころで電気的凝析室2の内部に入る。 電気的凝析室2内を占める液体中になお存在する汚濁物は、電解液の上昇流によ って運ばれる活性吸収能を有する金属水酸化物粒子と相互反応する。凝析によっ て生成した大きな凝集体は沈降室1内の液面に浮上する。この作用は電極3で発 生する気泡によって極めて容易に行なわれる。 凝析した不純物の凝集体と、反応しなかったいくらかの金属水酸化物とは、注入 管22から噴出する圧縮空気によって泡ダクト20に沿って混合槽21に運ばれ る。 泡状産出物が、アルキメデスらせん形挿入体23を有する泡ダクト20に沿って 運ばれるときに、気体と、水、汚濁物および金属水酸化物を含む液体とに激しく 分離される。廃出物の分離をさらに迅速かつ有効に行なうために、泡ダクト20 を包むジャケット25に導管26から伝熱材を供給して導管27から凝縮液を排 出し、こうして反出物を熱処理することが好ましい。こうして、産出物処理の熱 的条件は汚濁の種類、たとえばオイル、ポリマーなどによって決定し、35℃〜 90℃の範囲に保持する。 浄化された液は有孔非消耗電極8を通り、導管34を通って沈降室1から排出さ れる。いくらかの汚濁物は、非消耗電極8から発生するガスとともに、上方に向 かい液面に運ばれてさらに浄化される。沈降室1に蓄積したスラッジは導管35 を通って周期的に排出される。 泡捕集室9からの海産出物は、泡ダク)20に沿って混合槽21へと連続的に取 出され、噴霧手段29から混合槽21に供給される汚濁液を前浄化して操作条件 をより一層好ましくする。 こうして、この汚濁液電気化学的浄化装置は、電気化学的に生成した金属水酸化 物によって汚濁物を凝析する間に、有田物を汚濁液の前浄化に使用し、これによ って処理前の液中の不純物の量を減少させることができる。またこれによって装 置の効果を一層向上させて、操業コストを低下させることができる。 また消耗電極は純粋な電解液に溶解するので、物質が消耗電極に沈着しない。こ のことは電極の陽極的溶解率を高める。 さらに空気吹込器によって泡捕集槽内をある程度減圧にして、海産出物を連続的 に除去するので、泡捕集槽の内面に海産出物が付着することを減少させ、浄化度 を向上させる。 さらに、混合槽内において液を浄化する目的で反出物を使用する。泡ダクトを通 る間に液相と気相とに分離するので液の浄化に大いに貢献する。液相は混合槽内 で濾床として利用され、この濾床に汚濁液を噴霧する。未反応の金属水酸化物は 汚濁粒子を凝析させる作用をする。 この浄化方法は、泡ダクト内で反出物を熱処理し、かつ鉱酸を加えて、浄化すべ き液のp+(を最適値に保つことによって、さらに効果を高めることができる。 この提案の装置は、前浄化によって、液の浄化効率を12〜16%増加させるこ とができ、消費電力およびこの浄化工程で使用する消耗電極の溶解金属を減少さ せ、かつ浄化度を99.3%〜99.8%に増加させることができ、また電極を 製造するための消費金属を減少させる。 産業上の利用性 本発明の装置は、水に溶解しない多様な不純物、たとえば有機物、固体懸濁物な どによって汚濁された液体の浄化に応用することができる。 本発明の装置は、石油製品およびポリマー、たとえばオイルおよびポリメチルメ タクリレートを含む産業廃液によって汚染された液体の浄化にもっとも有効に利 用することができる。 国際調査報告 The invention will now be described in detail with respect to particular embodiments in conjunction with the accompanying drawings. The drawing is 1 shows a cross-sectional view of an entire polluted liquid electrochemical purification device. BEST MODE FOR CARRYING OUT THE INVENTION This polluted liquid electrochemical purification device consists of a coaxially arranged settling chamber 1 and two detachable It has an electrical coagulation chamber 2 consisting of partitions that can be separated. The lower compartment of the electrocoagulation chamber 2 protrudes from the settling chamber 1, and a consumable electrode is placed in this compartment. I have entered 3. The upper and lower compartments of the electrical coagulation chamber 2 are separated from each other. forming an annular gap 4 between these compartments, and these two compartments share a common header. 5, and the inside of the header 5 communicates with a polluted liquid supply pipe 6. . An annular partition 7 is arranged between the settling chamber 1 and the electrical coagulation chamber 2, which lengthen the flow path for the liquid being purified. The perforated non-consumable electrode 8 is located within the space formed by the wall of the electrical coagulation chamber (2) and the annular partition wall 7. and is located substantially horizontally below the level of the liquid. Above the electrical coagulation chamber 2 there is a bubble collector 9, which is connected airtight to the annular partition 7. It is formed by a tapered insert 10. The foam collector 9 is located in the sedimentation chamber 1. It has an exhaust pipe 11 with a valve 12 located above the level of the liquid. The upper part of the annular partition wall 7 is inserted into the foam collector 9 with a gap 13 between it and the inner surface of the foam collector 9. installed. This gap 13 forms an annular recess 14, which The electrolyte is supplied to the lower compartment of the electrocoagulation chamber 2 via the ILF channel 15 with 16 Connect with conduit 17. The upper part of the annular partition wall 7 is provided with a tape having a shape that matches the shape of the foam collector 9. It has a pa≠-shaped guide shoulder 19. The top of the foam collector 9 communicates with a mixing tank 21 via a foam duct 20. foam duct 20 is placed above the foam collector 9 and has a nozzle facing the mixing tank 21. It has a tube 22, an Archimedean spiral insert 23, and a mineral acid feed tube 24. The foam duct 20 is wrapped on the outside with a steam jacket 25, and this jacket 25 is It has a heating material supply pipe 26 and a condensate discharge pipe 27. Contamination occurs inside the mixing tank 21 above the level where the foam duct 20 is connected. A liquid supply pipe 28 is arranged, at the end of which there is a liquid spraying means 29. Inside the mixing tank 21 There is a horizontal perforated partition 30 in the section which separates the product from the liquid and which separates the product from the liquid. Above is a conduit 31 which removes the product from the mixing tank 21. Bottom of mixing tank 21 is a conduit 6 which supplies the turbid liquid to the electrocoagulation chamber 2 via a conduit 32 and a conduit 33. Connect with. The settling chamber 1 also has a purified liquid discharge pipe 34 and a sludge discharge pipe 35. This polluted liquid electrochemical purification device operates as follows. Before the start of purification, an electrolytic solution, for example, an industrially pure After filling with water of 30% or water containing a small amount of NaCβ, voltage is applied to electrodes 3 and 8. A current is applied to the electrolyte, thereby anodicly dissolving the electrode 3 and creating a non-consumable electrical current. A bubble is generated above the pole 8. When the electrode 3 is dissolved anodically, a metal hydroxide, for example A7! (0)1):+ma or Fe (OH):l is generated in the pure electrolyte, and this hydroxide is removed by bubbles. The bubbles are carried to the surface of the electrolyte in the bubble collector 9 and accumulate there. and injection tube 2 It is blown away from the foam layer by the compressed air that blows out from the foam duct) and passes through the foam duct 20. and enters the mixing tank 21. After a while, the turbid liquid begins to be introduced into the device via the spray means 29. p of polluted liquid To adjust the H value, a predetermined amount of mineral acid, e.g. HCl, is added through conduit 24. is necessary. The pollution particles interact with the metal hydroxide in the mixing tank 21, and the pollution particles become phaseless. After forming fairly large aggregates and accumulating above the perforated bulkhead 30, the conduit 31 is removed. A filter bed consisting of the flocculates thus coagulated is additionally formed in the mixing tank 21 . Mixed The polluted liquid that has been partially purified of pollutants in the mixing tank 21 passes through the conduit 6 and the conduit 33. After being fed into the annular gap 4, the electrode is placed directly above the consumable electrode system 3 and at some distance from it. At this point, the inside of the electrical coagulation chamber 2 is entered. Any contaminants still present in the liquid occupying the electrocoagulation chamber 2 are removed by the upward flow of the electrolyte. It interacts with metal hydroxide particles that have active absorption capacity and are transported by By coagulation The large aggregates formed float on the liquid surface in the settling chamber 1. This action occurs at electrode 3. This is done very easily due to the bubbles that form. The precipitated impurity aggregates and some unreacted metal hydroxide are The compressed air blown out from the pipe 22 carries the foam along the foam duct 20 to the mixing tank 21. Ru. A foamy output is produced along a foam duct 20 having an Archimedean helical insert 23. When transported, it violently interacts with gases and liquids, including water, pollutants, and metal hydroxides. Separated. For even faster and more effective waste separation, foam ducts 20 A heat transfer material is supplied from a conduit 26 to a jacket 25 that envelops the It is preferable to heat-treat the ejected material in this way. Thus, the heat of output processing The conditions are determined by the type of contamination, such as oil, polymer, etc. Maintain within 90°C. The purified liquid passes through a perforated non-consumable electrode 8 and is discharged from the settling chamber 1 through a conduit 34. It will be done. Some contaminants will move upwards along with the gas generated from the non-consumable electrode 8. It is carried to the surface of the sludge where it is further purified. The sludge accumulated in settling chamber 1 is transferred to conduit 35. is periodically discharged through the Sea products from the foam collection chamber 9 are continuously taken into a mixing tank 21 along a foam duct 20. The polluted liquid discharged and supplied from the spraying means 29 to the mixing tank 21 is pre-purified and adjusted to operating conditions. even more preferable. In this way, this polluted liquid electrochemical purification device is capable of producing electrochemically generated metal hydroxide. During the coagulation of pollutants with a substance, the Arita substance is used for pre-purification of the polluted liquid, and thereby Therefore, the amount of impurities in the liquid before treatment can be reduced. This also allows It is possible to further improve the effectiveness of the installation and reduce operating costs. Also, since the consumable electrode is dissolved in a pure electrolyte, no substances are deposited on the consumable electrode. child This increases the anodic dissolution rate of the electrode. In addition, an air blower is used to reduce the pressure in the foam collection tank to a certain extent to continuously collect marine products. This reduces the adhesion of marine products to the inner surface of the foam collection tank and improves the degree of purification. improve. Furthermore, the effluent is used for the purpose of purifying the liquid in the mixing tank. through foam duct Since it separates into a liquid phase and a gas phase during the process, it greatly contributes to the purification of the liquid. Liquid phase is in the mixing tank The filter bed is used as a filter bed, and the polluted liquid is sprayed onto this filter bed. Unreacted metal hydroxide is It acts to coagulate pollutant particles. This purification method heat-treats the exudate in a foam duct and adds mineral acid to clean it. The effect can be further enhanced by keeping p+( of the liquid at an optimal value. This proposed device can increase the liquid purification efficiency by 12-16% through pre-purification. This reduces power consumption and molten metal in the consumable electrodes used in this purification process. and increase the degree of purification to 99.3% to 99.8%. Reduces metal consumption for manufacturing. Industrial applicability The device of the present invention is capable of handling various impurities that are not soluble in water, such as organic matter, solid suspensions, etc. It can be applied to purify liquids contaminated by water. The device of the invention is suitable for petroleum products and polymers such as oils and polymethylmethane. Most effectively used for purifying liquids contaminated by industrial effluents containing tacrylates. can be used. international search report

Claims (1)

【特許請求の範囲】 1.沈降室と、この沈降室の頂部に配置された浄化された液の排出管と、この沈 降室の底部に配置された廃出物排出管と、この沈降室の上方に配置された注入管 付き泡捕集器と、沈降室の内部にこれと共軸的に配置され、かつ環状隔壁によっ て沈降室から分離された電気的凝析室と、この凝析室内の下部に配置された消耗 電極と、この消耗電極の下方に配置された電解液供給管と、この消耗電極の上方 に配置されたヘツダと、このヘツダと接続された汚濁液供給管路とを有する汚濁 液電気化学的浄化装置であって、泡捕集器(9)に泡ダクト(20)を介して連 通する混合槽(21)を有し、かつ泡捕集器(19)が、環状隔壁(7)と気密 に接続していることを特徴とする、汚濁液の電気化学的浄化装置。 2.泡捕集器(9)が、弁(12)付き空気排出管(11)を有する、請求の範 囲第1項記載の装置。 3.環状隔壁(7)の頂部が泡捕集器(9)の内部に配置されており、この泡捕 集器(9)はその内面に対して環状凹部(14)を形成する間隙(13)を有し 、かつ環状隔壁(7)の頂部が泡捕集器(9)の形に適合する形の肩部(19) を有する、請求の範囲第1項記載の装置。 4.泡ダクト(20)が、内部にアルキメデスらせん形挿入体(23)を有し、 かつこの泡ダクト(20)が外側をスチームジャケット(25)で包まれている 、請求の範囲第1項記載の装置。 5.混合槽(21)が底部において導管(32)を介して汚濁液を電気的凝析槽 (2)に供給する循環管路(33)と接続され、さらにこの混合槽(21)が頂 部において、汚濁液供給管(28)および分離された廃出物を排出する導管(3 1)と接続されている、請求の範囲第1項記載の装置。 6.混合槽(21)が頂部において汚濁液供給管(28)と接続されている噴霧 手段(29)を有し、かつこの混合槽(21)が内部において、泡ダクト(20 )が接続されている水準より実質的に下方の位置に、有孔隔壁(30)を有する 、請求の範囲第1または5項記載の装置。 7.泡ダクト(20)が、鉱酸供給管(24)を有する、請求の範囲第1または 4項記載の装置。[Claims] 1. a settling chamber, a drain pipe for the purified liquid located at the top of this settling chamber, and a A waste discharge pipe located at the bottom of the settling chamber and an injection pipe located above this settling chamber. a foam collector disposed within the settling chamber coaxially therewith and defined by an annular bulkhead; An electric coagulation chamber separated from the settling chamber and a consumable chamber located at the bottom of this coagulation chamber. An electrode, an electrolyte supply pipe placed below the consumable electrode, and an electrolyte supply pipe placed above the consumable electrode. a pollution liquid supply pipe having a header arranged in the pollution control head and a pollution liquid supply pipe connected to the header; A liquid electrochemical purification device, the device being connected to a foam collector (9) via a foam duct (20). The foam collector (19) is airtightly connected to the annular partition wall (7). An electrochemical purification device for polluted liquid, characterized in that the device is connected to. 2. Claimed in which the foam collector (9) has an air outlet pipe (11) with a valve (12) The device according to item 1 of the box. 3. The top of the annular partition (7) is arranged inside the foam collector (9), which The collector (9) has a gap (13) forming an annular recess (14) against its inner surface. , and the top of the annular partition (7) has a shoulder (19) shaped to match the shape of the foam collector (9). 2. The device according to claim 1, having: 4. the foam duct (20) has an Archimedean helical insert (23) therein; This foam duct (20) is wrapped on the outside with a steam jacket (25). , the apparatus according to claim 1. 5. At the bottom, the mixing tank (21) transfers the polluted liquid through a conduit (32) to an electrical coagulation tank. (2), and this mixing tank (21) is connected to the top. In the section, a pollutant supply pipe (28) and a conduit (3) discharging the separated waste are installed. 1). The device according to claim 1, wherein the device is connected to: 1). 6. Spraying in which the mixing tank (21) is connected at the top to the pollutant supply pipe (28) means (29), and this mixing tank (21) has a foam duct (20 ) has a perforated bulkhead (30) at a position substantially below the level to which the , the apparatus according to claim 1 or claim 5. 7. Claim 1 or 2, wherein the foam duct (20) has a mineral acid supply pipe (24). The device according to item 4.
JP59503764A 1984-05-08 1984-05-08 Polluted liquid electrochemical purification device Pending JPS61502038A (en)

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CH650418A5 (en) * 1982-04-07 1985-07-31 Kh Polt I Im V I Lenina Apparatus for electrochemical cleaning of effluent

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FR2571629A1 (en) 1986-04-18
CA1232231A (en) 1988-02-02
SE8600050L (en) 1986-01-07
FI855161A (en) 1985-12-27
ATA907584A (en) 1990-05-15
SE8600050D0 (en) 1986-01-07
SE453825B (en) 1988-03-07
AT391679B (en) 1990-11-12
FR2571629B1 (en) 1987-02-27
DE3490699T (en) 1986-04-24
FI855161A0 (en) 1985-12-27
WO1985005097A1 (en) 1985-11-21
DE3490699C2 (en) 1988-07-28

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