JPH1190448A - Electrolytic treatment of polluted water - Google Patents
Electrolytic treatment of polluted waterInfo
- Publication number
- JPH1190448A JPH1190448A JP25551097A JP25551097A JPH1190448A JP H1190448 A JPH1190448 A JP H1190448A JP 25551097 A JP25551097 A JP 25551097A JP 25551097 A JP25551097 A JP 25551097A JP H1190448 A JPH1190448 A JP H1190448A
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- Prior art keywords
- sewage
- electrode
- electrolytic treatment
- electrodes
- polluted water
- Prior art date
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、直流電源と接続された
２極電極を備えた汚水電解処理槽中で、汚水に対して直
流を通電して、汚水電解処理を行う方法及び処理槽に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a treatment tank for conducting sewage electrolytic treatment by supplying a direct current to sewage in a sewage electrolytic treatment tank provided with a bipolar electrode connected to a DC power supply. .
【０００２】特に、一般細菌、大腸菌の除去はもとよ
り、化学的酸素要求量（以下「ＣＯＤ」と略す。）及び
窒素含有量を低減させるのに好適な汚水電解処理方法及
び処理槽に関する。In particular, the present invention relates to a sewage electrolytic treatment method and a treatment tank suitable for reducing chemical oxygen demand (hereinafter abbreviated as "COD") and nitrogen content as well as removing general bacteria and Escherichia coli.
【０００３】[0003]
【背景技術】下水道の未整備地域においては、個別に汚
水処理施設を設置して、処理後、放流していた。そし
て、その汚水処理法は、通常、微生物の分解浄化作用を
用いた活性汚泥処理法によっていた。BACKGROUND ART In sewage undeveloped areas, individual sewage treatment facilities have been installed, and after treatment, they have been released. The sewage treatment method is usually an activated sludge treatment method using a decomposing and purifying action of microorganisms.
【０００４】しかし、活性汚泥処理法は、一般的に立地
に場所をとると共に、装置全体として大型化し、容積当
たりの処理能力も小さかった。[0004] However, the activated sludge treatment method generally requires a large space at the site, and the size of the whole apparatus is large, and the treatment capacity per volume is small.
【０００５】このため、本発明者らは、先に、下記構成
の汚水処理装置を提案した（特開平７−６０２５７号公
報参照）。[0005] Therefore, the present inventors have previously proposed a sewage treatment apparatus having the following configuration (see Japanese Patent Application Laid-Open No. 7-60257).
【０００６】「電極２極間に汚水を通液して、直流を通
電し、汚水を接触酸化する事により金属イオン、ＢＯ
Ｄ、ＣＯＤ、大腸菌、一般細菌を減少させる汚水処理装
置。」[0006] Sewage is passed between the two electrodes, a direct current is applied, and the sewage is contact-oxidized to produce metal ions, BO
Wastewater treatment equipment that reduces D, COD, Escherichia coli, and general bacteria. "
【０００７】[0007]
【発明が解決しようとする課題】しかし、上記汚水処理
装置では、窒素含量（アンモニア性窒素を含む。）を半
分以下に低減することができなかった（前記公報実施例
１・２・３参照）。また、電極として陰極陽極ともに金
属電極であり、陽極側で金属イオンの溶出に伴う水酸化
物が沈殿すると言う問題点があった。However, in the above-mentioned sewage treatment apparatus, the nitrogen content (including ammoniacal nitrogen) could not be reduced to less than half (see the above-mentioned Examples 1, 2, and 3). . Further, the cathode and the anode are both metal electrodes, and there is a problem that hydroxide is precipitated on the anode side due to elution of metal ions.
【０００８】本発明は、上記にかんがみて、窒素含量の
大幅な低減ができるととともに、金属酸化物の溶出がな
い汚水電解処理方法及び処理槽を提供することを目的と
する。SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a method and a tank for electrolytically treating sewage in which the nitrogen content can be significantly reduced and metal oxides are not eluted.
【０００９】[0009]
【課題を解決するための手段】本発明者らは、上記課題
を解決するために、鋭意開発に努力をする過程で、汚水
のＮａＣｌを加えるとともに、２極電極の内の陽電極を
炭素電極とすれば、上記課題が解決できることを見出し
て、下記構成の本願発明に想到した。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have added NaCl to sewage and changed the positive electrode of the two electrodes to a carbon electrode in the process of diligent development. Then, the inventors have found that the above problem can be solved, and have arrived at the present invention having the following configuration.
【００１０】(1) 本発明の汚水電解処理方法は、直流電
源と接続された２極電極を備えた汚水電解処理槽中で、
汚水に対して直流を通電して、汚水電解処理を行う方法
において、汚水に、必要によりアルカリ塩を添加すると
ともに、２極電極の内の陽電極を炭素電極とすることを
特徴とするものである。(1) The sewage electrolytic treatment method of the present invention comprises: a sewage electrolytic treatment tank having a bipolar electrode connected to a DC power supply;
A method of conducting a sewage electrolytic treatment by applying a direct current to sewage, characterized in that an alkali salt is added to the sewage as necessary and that the positive electrode of the two-electrodes is a carbon electrode. is there.
【００１１】上記に汚水電解処理方法おいて、陰電極は
アルミニウム電極、鉄電極、ないし、炭素電極とするこ
とが望ましい。In the sewage electrolytic treatment method described above, the negative electrode is preferably an aluminum electrode, an iron electrode, or a carbon electrode.
【００１２】また、汚水に対する通電に際して、さら
に、汚水を攪拌及び／またはエアレーションすることが
更に望ましい。[0012] Further, it is more desirable to agitate and / or aerate the wastewater when supplying electricity to the wastewater.
【００１３】(2) 本発明の汚水電解処理槽は、直流電源
と接続された２極電極を備えた汚水電解処理槽におい
て、２極電極の内の陽電極が炭素電極であることを特徴
とする。(2) The sewage electrolysis tank of the present invention is characterized in that, in the sewage electrolysis tank having a bipolar electrode connected to a DC power source, the positive electrode of the two electrodes is a carbon electrode. I do.
【００１４】上記汚水電解処理槽は、陰電極はアルミニ
ウム電極、鉄電極、ないし、炭素電極であることが望ま
しい。In the sewage electrolysis tank, the negative electrode is preferably an aluminum electrode, an iron electrode, or a carbon electrode.
【００１５】また、更に、攪拌装置及び／またはエアレ
ーション装置を具備することが望ましい。Further, it is desirable to further provide a stirring device and / or an aeration device.
【００１６】[0016]
【発明の実施の形態】次に、上記手段の各構成について
詳細な説明をおこなう。Next, each component of the above means will be described in detail.
【００１７】(1) 本発明に使用する汚水電解処理槽１２
は、基本的には、直流電源１４と接続された２極電極、
即ち陽電極１６Ａ、陰電極１６Ｂを備えたものである。
この汚水電解処理槽１２は、通常、電解（接触酸化）作
用を増大させるために、攪拌機１８及びエアレーション
装置２０を備えている。(1) Sewage electrolytic treatment tank 12 used in the present invention
Is basically a bipolar electrode connected to the DC power supply 14,
That is, it has a positive electrode 16A and a negative electrode 16B.
This sewage electrolytic treatment tank 12 is usually provided with a stirrer 18 and an aeration device 20 in order to increase the electrolytic (contact oxidation) action.
【００１８】回分式でもよいが、連続式とするために、
汚水（微生物含有水）供給口２２を備え、更に、溢流口
２４を介して分離槽２６と接続されている。Although a batch type may be used, in order to make it a continuous type,
A sewage (microorganism-containing water) supply port 22 is provided, and further connected to a separation tank 26 via an overflow port 24.
【００１９】本発明では、２極電極の内の陽電極１６Ａ
を炭素電極とする。そして、陰電極の材質は、炭素電極
または金属電極とする。金属電極としては、アルミニウ
ム電極、鉄電極、銅電極等を好適に使用できる。後述の
実施例から支持される如く、特に、アルミニウム電極の
場合、炭素電極や他の金属電極では得られない、リン含
量の低減効果も奏し、更には、アルカリ塩無添加でも、
一般細菌、大腸菌群等の除去効果が極めて高い（実施例
５参照）。In the present invention, the positive electrode 16A of the bipolar electrodes is used.
Is a carbon electrode. The material of the negative electrode is a carbon electrode or a metal electrode. As the metal electrode, an aluminum electrode, an iron electrode, a copper electrode, or the like can be preferably used. As supported by the examples described below, in particular, in the case of an aluminum electrode, a carbon electrode or another metal electrode also has an effect of reducing the phosphorus content that cannot be obtained, and further, even without the addition of an alkali salt,
The effect of removing general bacteria and coliforms is extremely high (see Example 5).
【００２０】また、電極の形状は、棒状、板状を問わな
い。特に、図２に示す如く、円柱状の陽電極（炭素電
極）１６Ａを、断面円弧状の陰電極１６Ｂで囲繞したも
のが、消費電力が少なくて済み望ましい。また、電極間
距離は、印加電圧、通電量により異なるが、電解（接触
酸化）効率等の見地から、通常、３〜１５mm、望ましく
は、５〜６mmとする。The shape of the electrode may be rod-like or plate-like. In particular, as shown in FIG. 2, it is desirable that a cylindrical positive electrode (carbon electrode) 16A is surrounded by a negative electrode 16B having an arc-shaped cross section, because the power consumption is small. The distance between the electrodes varies depending on the applied voltage and the amount of current, but is usually 3 to 15 mm, preferably 5 to 6 mm from the viewpoint of the electrolysis (contact oxidation) efficiency and the like.
【００２１】(2) 上記汚水電解処理槽１１を用いての、
汚水の処理は、下記の如く行う。(2) Using the sewage electrolytic treatment tank 11
The treatment of sewage is performed as follows.
【００２２】汚水Ａを、汚水電解処理槽１２中で、汚水
Ａに対して２極電極１６Ａ、１６Ｂを介して直流を通電
させて行う。The sewage A is discharged in the sewage electrolysis tank 12 by applying a direct current to the sewage A via the bipolar electrodes 16A and 16B.
【００２３】ここで、汚水には、特に家庭排水には、料
理に使用する食塩、食塩を含む醤油等の調味料に起因し
て、ＮａＣｌが、ほとんどの場合含まれており、アルカ
リ塩を添加しなくても、良好な排水処理効果が得られる
場合がある。Here, in most cases, sewage, especially domestic effluent, contains NaCl due to seasonings such as salt and soy sauce containing salt used in cooking, and alkali salts are added. Without doing so, a good wastewater treatment effect may be obtained.
【００２４】汚水には、必要により、即ち、排水処理の
目的（除去成分・除去率）に応じて、アルカリ塩を、ア
ルカリ塩含量が０〜１０wt％、望ましくは１〜８wt％、
更に望ましくは、３〜６wt％となるように添加する。こ
こで、アルカリ塩としては、ＮａＣｌ、ＫＣｌ、ＮａＢ
ｒ、ＫＢｒ等を挙げることができるが、特にＮａＣｌが
望ましい。ＮａＢｒ、ＫＢｒは着色性があり、また、Ｋ
ＣｌはＮａＣｌに比して高価である。In the wastewater, if necessary, that is, depending on the purpose of the wastewater treatment (removal component / removal rate), an alkali salt is contained in an amount of 0 to 10% by weight, preferably 1 to 8% by weight,
More preferably, it is added so as to become 3 to 6% by weight. Here, as the alkaline salt, NaCl, KCl, NaB
r, KBr, etc., and NaCl is particularly desirable. NaBr and KBr have coloring properties.
Cl is more expensive than NaCl.
【００２５】アルカリ塩が１wt％未満では、ＣＯＤの低
減率が小さく、また、窒素成分、一部大腸菌群、一般細
菌の除去効果が小さい。また、８wt％を越えても、特に
１０wt％を越えると、ほとんど上記各項目の除去効果に
差異がでずに無駄である。なお、アルカリ塩は強電解質
であるので、電解処理の際の電解効率を向上させ、消費
電力の低減効果も奏する。When the content of the alkali salt is less than 1% by weight, the reduction rate of COD is small, and the effect of removing nitrogen components, some coliforms and general bacteria is small. If the amount exceeds 8% by weight, especially if it exceeds 10% by weight, there is almost no difference in the removal effect of each of the above items, and it is useless. In addition, since the alkali salt is a strong electrolyte, it improves the electrolysis efficiency during the electrolytic treatment and also has the effect of reducing power consumption.
【００２６】ここで、通電条件は、０．１〜２Ａ／ｄｍ
2 ×０．５〜１０ｈ、望ましくは、０．５〜１Ａ／ｄｍ
2 ×１〜５ｈとする。そのときの、印加電圧は、通常、
１〜５０Ｖ、望ましくは、４〜２０Ｖとする。Here, the energizing condition is 0.1 to 2 A / dm.
2 × 0.5 to 10 h, desirably 0.5 to 1 A / dm
2 x 1 to 5 h. The applied voltage at that time is usually
1 to 50V, preferably 4 to 20V.
【００２７】また、汚水の温度も、室温でもよいが、電
極酸化処理し易い温度、通常、４０〜６０℃に、加温し
て行った方がよい。この際、攪拌ないしエアレーション
も同時に行うことが、接触酸化作用が増大して更に望ま
しい。The temperature of the sewage may be room temperature, but it is better to heat the sewage to a temperature at which the electrode is easily oxidized, usually 40 to 60 ° C. At this time, it is more desirable to perform stirring or aeration at the same time, because the catalytic oxidation action is increased.
【００２８】[0028]
【発明の作用・効果】本発明の汚水電解処理方法及び処
理槽は、下記試験例で支持される如く、汚水に直流電流
を通電するだけで、窒素含量の大幅な低減ができるとと
ともに、金属酸化物の溶出がない汚水電解処理方法及び
処理槽を提供することができる。The operation and effect of the present invention can be greatly reduced by simply applying a direct current to the wastewater, and the metal content can be reduced, as supported by the following test examples. It is possible to provide a sewage electrolytic treatment method and a treatment tank in which oxides are not dissolved.
【００２９】[0029]
(1) 以下、本発明の効果を確認するために行った試験例
について、説明をする。(1) Hereinafter, test examples performed to confirm the effects of the present invention will be described.
【００３０】各試験例では、１Ｌのビーカに、汚水（家
庭排水）Ａ・Ｂを７００ｍＬを入れた後、ＮａＣｌ：２
８ｇを添加して被電解液を調製した。In each test example, 700 mL of sewage (home wastewater) AB was placed in a 1 L beaker, and then NaCl: 2 was added.
8 g was added to prepare an electrolytic solution.
【００３１】そして、変圧可能な直流電源または交流電
源（６０Ｈｚ）に接続された２極電極（電極間距離：約
５mm、断面半円）を投入し、電流０．５Ａ（電流密度：
６．４０×１０-1Ａ／ｄｍ2 ）となるように電圧を調整
して２時間、通電した。Then, a bipolar electrode (distance between electrodes: about 5 mm, semicircular cross section) connected to a transformable DC power supply or AC power supply (60 Hz) is applied, and a current of 0.5 A (current density:
The voltage was adjusted to 6.40 × 10 -1 A / dm 2 ), and current was supplied for 2 hours.
【００３２】なお、電源及び電極の組み合わせ及び排水
の種類は、表２・３に示すものとした。The combinations of the power source and the electrodes and the types of drainage are shown in Tables 2 and 3.
【００３３】(2) そして、処理前・処理後の汚水につい
て、下記各項目について下記試験方法に準じて分析試験
を行った。(2) The wastewater before and after the treatment was subjected to an analytical test for the following items according to the following test method.
【００３４】一般細菌（個／mL）：平成４年厚生省令
第６９号（衛水第２６４号） 大腸菌群数（個／mL）：昭和３７年建設省例第１号別
表第１、計量証明対象外 pH （２４℃）：JIS K 0120 12.1 ＣＯＤ（mg／mL）：JIS K 0120 17 窒素含有量（mg／mL）：JIS K 0120 45.5（熱分解
法） リン含有量（mg／mL）：JIS K 0120 46.3 準拠 銅含有量（mg／mL）：JIS K 0120 52.2及び同備考６ 溶解性鉄含有量（mg／mL）：JIS K 0120 57.2 アルミニウム含有量（mg／mL）：原子吸光法 (3) 表１には、被処理前の、表２・３には夫々処理後の
結果を示す。表２〜３から、夫々、下記のことが分か
る。General bacteria (cells / mL): Ministry of Health and Welfare Ordinance No. 69 (No. 264 of the Ministry of Health and Welfare) Number of coliform bacteria (cells / mL): Ministry of Construction Not applicable pH (24 ° C): JIS K 0120 12.1 COD (mg / mL): JIS K 0120 17 Nitrogen content (mg / mL): JIS K 0120 45.5 (pyrolysis method) Phosphorus content (mg / mL): Compliant with JIS K 0120 46.3 Copper content (mg / mL): JIS K 0120 52.2 and Note 6 Soluble iron content (mg / mL): JIS K 0120 57.2 Aluminum content (mg / mL): Atomic absorption method ( 3) Table 1 shows the results before processing, and Tables 2 and 3 show the results after processing, respectively. From Tables 2 and 3, the following can be seen respectively.
【００３５】直流の場合、交流に比して、いずれも、一
般細菌、大腸菌群、窒素の除去効果が格段に高く、か
つ、ＣＯＤも大幅に低下することが分かる（表２の実施
例１と比較例１及び表３の実施例４と比較例２参照）。
また、陽電極炭素と陰電極アルミニウムの組み合せの場
合、炭素電極や他の金属電極では得られない、リンの除
去効果も奏する（実施例４・５、比較例２）。In the case of direct current, the effect of removing general bacteria, coliform bacteria and nitrogen is remarkably high, and the COD is significantly reduced, as compared with the case of alternating current (see Examples 1 and 2 in Table 2). (See Comparative Example 1 and Example 4 and Comparative Example 2 in Table 3).
In addition, in the case of the combination of the positive electrode carbon and the negative electrode aluminum, the effect of removing phosphorus, which cannot be obtained with a carbon electrode or another metal electrode, is also exerted (Examples 4 and 5, Comparative Example 2).
【００３６】更に、食塩を加えた実施例１はそれを加え
ない実施例２に比して、リン除去効果及びＣＯＤ低減効
果に余り差が認められないが、一般細菌、大腸菌群及び
窒素の除去効果に大きな差異が認められる（表２参
照）。[0036] Furthermore, in Example 1 in which sodium chloride was added, there was little difference in the phosphorus removing effect and COD reduction effect as compared with Example 2 in which sodium chloride was not added. A large difference is observed in the effects (see Table 2).
【００３７】また、食塩を加えた実施例４はそれを加え
ない実施例５に比して、一般細菌、大腸菌群の除去効果
は余り変わらないが、ＣＯＤ低減効果及び窒素除去効果
は極めて高い。In addition, in Example 4 in which sodium chloride was added, the effect of removing general bacteria and coliform bacteria was not much different from that in Example 5 in which sodium chloride was not added, but the COD reduction effect and the nitrogen removal effect were extremely high.
【００３８】[0038]
【表１】 [Table 1]
【００３９】[0039]
【表２】 [Table 2]
【００４０】[0040]
【表３】 [Table 3]
【図１】本発明の微生物の増殖方法に使用する汚水電解
処理槽の一例を示す概略断面図。FIG. 1 is a schematic cross-sectional view showing an example of a sewage electrolytic treatment tank used in the method for growing microorganisms of the present invention.
【図２】本発明の汚水電解処理槽において使用するのに
好適な電極の形態を示す斜視図。FIG. 2 is a perspective view showing a form of an electrode suitable for use in the sewage electrolytic treatment tank of the present invention.
１２ 汚水電解処理槽 １４ 直流電源 １６Ａ 陽電極 １６Ｂ 陰電極 １８ 攪拌機 ２０ エアレーション装置 Ａ 汚水 12 Sewage electrolysis tank 14 DC power supply 16A Positive electrode 16B Negative electrode 18 Stirrer 20 Aeration device A Sewage
Claims (11)
汚水電解処理槽中で、汚水に対して直流を通電して、汚
水電解処理を行う方法において、前記汚水に、必要によ
り、アルカリ塩を添加するとともに、前記２極電極の内
の陽電極を炭素電極とすることを特徴とする汚水電解処
理方法。1. A method for performing a sewage electrolysis treatment by applying a direct current to sewage in a sewage electrolysis treatment tank having a bipolar electrode connected to a DC power supply, wherein the sewage is optionally treated with an alkali. A method for electrolytically treating sewage, comprising adding a salt and using a positive electrode of the two-electrodes as a carbon electrode.
ム電極とすることを特徴とする請求項１に記載の汚水電
解処理方法。2. The sewage electrolytic treatment method according to claim 1, wherein the negative electrode of the two electrodes is an aluminum electrode.
ることを特徴とする請求項１に記載の汚水電解処理方
法。3. The sewage electrolytic treatment method according to claim 1, wherein the negative electrode of the two electrodes is an iron electrode.
することを特徴とする請求項１に記載の汚水電解処理方
法。4. The sewage electrolytic treatment method according to claim 1, wherein the negative electrode of the two electrodes is a carbon electrode.
に、前記汚水を攪拌及び／またはエアレーションするこ
とを特徴とする請求項１〜４のいずれかに記載の汚水電
解処理方法。5. The sewage electrolytic treatment method according to claim 1, wherein the sewage is further agitated and / or aerated during energization of the sewage.
に、その汚水における含有量が１〜８wt％であることを
特徴とする請求項１〜４のいずれかに記載の汚水電解処
理方法。6. The sewage electrolytic treatment method according to claim 1, wherein the alkali salt is NaCl and the content in the sewage is 1 to 8 wt%.
汚水電解処理槽において、前記２極電極の内の陽電極が
炭素電極であることを特徴とする汚水電解処理槽。7. A sewage electrolysis tank having a two-electrode connected to a DC power supply, wherein the positive electrode of the two electrodes is a carbon electrode.
ム電極であることを特徴とする請求項７に記載の汚水電
解処理槽。8. The sewage electrolytic treatment tank according to claim 7, wherein the negative electrode of the bipolar electrodes is an aluminum electrode.
ることを特徴とする請求項７に記載の汚水電解処理槽。9. The sewage electrolytic treatment tank according to claim 7, wherein the negative electrode of the two electrodes is an iron electrode.
であることを特徴とする請求項７に記載の汚水電解処理
槽。10. The sewage electrolytic treatment tank according to claim 7, wherein the negative electrode of the two electrodes is a carbon electrode.
ション装置を具備することを特徴とする請求項７〜１０
のいずれかに記載の汚水電解処理槽。11. The apparatus according to claim 7, further comprising a stirring device and / or an aeration device.
The sewage electrolytic treatment tank according to any one of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25551097A JPH1190448A (en) | 1997-09-19 | 1997-09-19 | Electrolytic treatment of polluted water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25551097A JPH1190448A (en) | 1997-09-19 | 1997-09-19 | Electrolytic treatment of polluted water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1190448A true JPH1190448A (en) | 1999-04-06 |
Family
ID=17279763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25551097A Pending JPH1190448A (en) | 1997-09-19 | 1997-09-19 | Electrolytic treatment of polluted water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1190448A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002068339A1 (en) * | 2001-02-26 | 2002-09-06 | Sanyo Electric Co., Ltd. | Method and system for treating nitrogen-containing compound |
| WO2003086980A1 (en) * | 2002-04-18 | 2003-10-23 | Sanyo Electric Co., Ltd. | Method of wastewater treatment and wastewater treatment apparatus |
| CN104709973A (en) * | 2015-02-05 | 2015-06-17 | 黄富华 | Primary cell-containing electrolytic water device |
| CN112811526A (en) * | 2020-12-31 | 2021-05-18 | 周廷云 | Acidic oxidation potential water continuous generator and generation method thereof |
-
1997
- 1997-09-19 JP JP25551097A patent/JPH1190448A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002068339A1 (en) * | 2001-02-26 | 2002-09-06 | Sanyo Electric Co., Ltd. | Method and system for treating nitrogen-containing compound |
| WO2003086980A1 (en) * | 2002-04-18 | 2003-10-23 | Sanyo Electric Co., Ltd. | Method of wastewater treatment and wastewater treatment apparatus |
| KR100611688B1 (en) * | 2002-04-18 | 2006-08-14 | 산요덴키가부시키가이샤 | Method of Wastewater Treatment and Wastewater Treatment Apparatus |
| US7300591B2 (en) | 2002-04-18 | 2007-11-27 | Sanyo Electronic Co., Ltd. | Wastewater treating method and wastewater treating apparatus |
| CN104709973A (en) * | 2015-02-05 | 2015-06-17 | 黄富华 | Primary cell-containing electrolytic water device |
| CN112811526A (en) * | 2020-12-31 | 2021-05-18 | 周廷云 | Acidic oxidation potential water continuous generator and generation method thereof |
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