JPS62234511A - Flocculating agent for precipitation - Google Patents
Flocculating agent for precipitationInfo
- Publication number
- JPS62234511A JPS62234511A JP7433286A JP7433286A JPS62234511A JP S62234511 A JPS62234511 A JP S62234511A JP 7433286 A JP7433286 A JP 7433286A JP 7433286 A JP7433286 A JP 7433286A JP S62234511 A JPS62234511 A JP S62234511A
- Authority
- JP
- Japan
- Prior art keywords
- water
- vermiculite
- flocculant
- hydrochloric acid
- flocculating agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001556 precipitation Methods 0.000 title claims description 9
- 239000008394 flocculating agent Substances 0.000 title abstract 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 150000003839 salts Chemical class 0.000 claims abstract description 13
- 239000010455 vermiculite Substances 0.000 claims abstract description 13
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 13
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 13
- 239000010445 mica Substances 0.000 claims abstract description 10
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 10
- 239000002689 soil Substances 0.000 claims abstract description 4
- 230000002378 acidificating effect Effects 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 229910052755 nonmetal Chemical class 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 230000001954 sterilising effect Effects 0.000 abstract 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000003311 flocculating effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 7
- 150000003840 hydrochlorides Chemical class 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000012629 purifying agent Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 150000002843 nonmetals Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、水中に溶解している有機物を析出(不溶化)
させて凝集させる添加剤(以下析出凝集剤という)に関
するものである。Detailed Description of the Invention "Field of Industrial Application" The present invention is a method for precipitating (insolubilizing) organic substances dissolved in water.
This invention relates to an additive that causes flocculation (hereinafter referred to as a precipitation flocculant).
「従来技術及びその問題点」
廃水中に溶解している蛋白質、アミノ酸、炭化水素、脂
肪酸等の有機物の処理は、多くは活性汚泥法により行な
われている。しかして、この方法は微生物に1って有機
物を分解させるものであるので、微生物を生存させ効率
よく活動させるため、廃水のPI3温度及び有機物濃度
を一定の範囲に維持し、エアレーションを行なわなけれ
ばならないが、このような煩雑な操作を行なってもなお
微生物が死減し廃水処理がストップする危険性は常につ
きまとっていた。しかもこの方法は、広い面積や大型の
諸設備を必要とする等の欠点もあったが、いままではこ
れに代る有効な方法が存在しなかったので、仕方なく採
用されているのが現状である。"Prior Art and its Problems" Treatment of organic substances such as proteins, amino acids, hydrocarbons, and fatty acids dissolved in wastewater is mostly carried out by an activated sludge method. However, since this method requires microorganisms to decompose organic matter, in order to keep the microorganisms alive and active, the PI3 temperature and organic matter concentration of the wastewater must be maintained within a certain range, and aeration must be performed. However, even with such complicated operations, there was always the risk that microorganisms would die and wastewater treatment would stop. Moreover, this method has some drawbacks, such as requiring a large area and large equipment, but until now there has been no effective alternative method, so it is currently being adopted out of necessity. It is.
また、水中に溶解している有機物を析出、凝集すること
ができれば、雨水や河川の水等を直ちに浄化して飲料水
にできるので、キャンプ等の野外活動に於いても、重量
もあり、携帯量に限度もある水筒等を持参しなくてもよ
いので便利である。In addition, if organic matter dissolved in water can be precipitated and coagulated, rainwater, river water, etc. can be immediately purified and made into drinking water, making it ideal for camping and other outdoor activities. This is convenient because you don't have to bring along a water bottle, which has a limited amount.
本発明は、このような点に着目してなされたものであり
、水中に溶解している有機物を不溶化して除去すること
ができ、しかも殺菌作用をも具備している析出凝集剤を
提供することを目的とする「問題点を解決するための手
段」
本発明者等は、上記目的を達成するため鋭意研究の結果
、雲母系鉱物が風化したバーミキュライトまたはこのバ
ーミキュライトが更に風化した土壌を塩酸水溶液に溶解
させて得た多種の金属塩及び非金属塩を主成分として含
有する酸性添加剤が、有機物を不溶化して凝集させ、し
かも殺菌作用をも併有する絶大なる効果を有する析出凝
集剤となることを見出し、本発明に到達した。The present invention has been made with attention to these points, and provides a precipitation flocculant that can insolubilize and remove organic matter dissolved in water and also has a bactericidal action. ``Means for Solving Problems'' In order to achieve the above object, the present inventors have conducted extensive research and found that vermiculite in which mica-based minerals have weathered or soil in which this vermiculite has further weathered is treated with an aqueous solution of hydrochloric acid. An acidic additive containing various metal salts and non-metal salts as main components, which are obtained by dissolving organic substances, becomes an extremely effective precipitation flocculant that insolubilizes and aggregates organic substances, and also has a bactericidal effect. They discovered this and arrived at the present invention.
本発明に使用する雲母系鉱物としては、その析出凝集作
用の点で、黒色雲母を使用するのがよい即ち、原料とし
て黒色雲母のバーミキュライト及びこのバーミキュライ
トがさらに風化した土壌を使用するのが特に好ましい。As the mica-based mineral used in the present invention, it is preferable to use black mica in view of its precipitation and flocculation action. That is, it is particularly preferable to use black mica vermiculite as a raw material and soil in which this vermiculite has been further weathered. .
本発明に使用する酸性添加剤を製造するには。To produce the acidic additive used in the present invention.
例えば、黒色雲母が風化したバーミキュライトに、25
z塩酸水溶液を、バーミキュライト:塩酸水溶液が、4
:3〜5となる重量比で加え、常温若しくは加熱下で
時々攪拌しながら数時間放置すればよい、このようにす
ると、原材料中のSi、 AI、Mg、 Fe、 K
、 Ha等の元素や酸化物が塩酸水溶液中に溶出して、
上記の金属や非金属の塩酸塩、酸化物、複塩及び錯塩が
生成される。更に上記以外に、W&量ではあるが、原材
料中に元素または酸化物として含まれているLi、 Z
r、 V 、 Xi、 Go、 P 、 Ba、S等の
塩酸塩も生成されるが、有害重金属類は皆無である。こ
のようにして得られた水溶液は、このまま又は濃縮若し
くは稀釈して本発明の酸性添加剤として使用される。For example, vermiculite with weathered black mica has 25
z Hydrochloric acid aqueous solution, vermiculite: Hydrochloric acid aqueous solution, 4
: Add at a weight ratio of 3 to 5 and leave for several hours at room temperature or under heating with occasional stirring. In this way, Si, AI, Mg, Fe, K in the raw materials
, elements such as Ha and oxides are eluted into the hydrochloric acid aqueous solution,
Hydrochlorides, oxides, double salts, and complex salts of the above metals and nonmetals are produced. Furthermore, in addition to the above, Li, Z, which are contained in the raw materials as elements or oxides, although in W& amounts.
Hydrochlorides of r, V, Xi, Go, P, Ba, S, etc. are also produced, but no harmful heavy metals are present. The aqueous solution thus obtained is used as the acidic additive of the present invention as it is or after being concentrated or diluted.
本発明の対象となる被処理水は、特に限定されないが1
例えば厨房廃水、食品加工業の廃水、畜産廃水、製紙廃
水等が挙げられる。また1本発明の析出、凝集剤は、殺
菌作用をも併有しているので、池、沼、湖等の淡水や雨
水の路上水を使用し、これを飲料水に殺菌浄化する飲料
用浄水剤として、或いは浴湯を19m浄化する浴湯浄化
剤としても好適に使用することができる。The water to be treated that is the object of the present invention is not particularly limited, but 1
Examples include kitchen wastewater, food processing industry wastewater, livestock wastewater, paper manufacturing wastewater, and the like. In addition, since the precipitation and flocculant of the present invention also has a bactericidal effect, fresh water from ponds, swamps, lakes, etc. and rainwater can be used to purify and sterilize drinking water. It can be suitably used as a bath water purifying agent or as a bath water purifying agent that purifies bath water by 19 m.
被処理水に対する酸性添加剤の添加量は、彼処理水の!
4g!4、濃度、前処理の省熱等によって相違するが、
一般的には被処理水100ccに対して、濃縮乾固後の
固形物として0.01〜10g特に0.1〜Ig用いら
れる。The amount of acidic additive added to the treated water is the amount of the treated water!
4g! 4. It varies depending on the concentration, heat saving of pretreatment, etc.
Generally, 0.01 to 10 g, particularly 0.1 to Ig, of solid matter after concentration and drying is used per 100 cc of water to be treated.
被処理水に酸性添加剤を添加し、所望によってはアルカ
リで中和すると有機物の分解によると思われる炭酸ガス
が発生し、液面にはフロックが浮上する。フロックは時
間の経過とともに沈澱し、液は清澄になる。フロックは
、例えば焼成バーミキュライト、ゼオライト、活性炭等
の漏材を通して濾過すればよい。When an acidic additive is added to the water to be treated and, if desired, neutralized with an alkali, carbon dioxide gas, which is thought to be due to the decomposition of organic matter, is generated, and flocs float to the surface of the liquid. The flocs settle out over time and the liquid becomes clear. The floc may be filtered through a leakage material such as calcined vermiculite, zeolite, activated carbon, or the like.
「実施例」
次に実施例を挙げ本発明を更に説明するが1本発明はこ
れら実施例に限定されない。"Examples" Next, the present invention will be further explained with reference to Examples, but the present invention is not limited to these Examples.
実施例1:析出凝集剤の製造例
5i0235.7EiL At20318.70%、
Fe20318.30%、100.42%、Mg07.
82%、 Ca01.40%、 Ha2el−02%、
K2O3,El1%を含有する黒色雲母が風化した日
本産バーミキュライトに25%塩酸水溶液を原材料:拌
しながら数日間放置すると、yX材料中のA1. M。Example 1: Production example of precipitation flocculant 5i0235.7EiL At20318.70%,
Fe20318.30%, 100.42%, Mg07.
82%, Ca01.40%, Ha2el-02%,
When a 25% hydrochloric acid aqueous solution is added to Japanese vermiculite, which has weathered black mica containing 1% K2O3 and El, and is left for several days while stirring, the A1. M.
、 Fe、 K 、 Ha、 Rb等の元素や酸化物が
塩酸水溶液中に溶出して上記の金属や非金属の塩酸塩や
酸化物となる。これらは単純な塩酸塩や酸化物の他複塩
や錯塩として生成されるものと考えられる。さらに上記
以外に微量であるが、原材料中に元素または酸化物とし
て含まれるLi、 Zr、 V 、旧、Go。, Fe, K, Ha, Rb, and other elements and oxides are eluted into the aqueous hydrochloric acid solution to become hydrochlorides and oxides of the metals and nonmetals mentioned above. These are thought to be produced as simple hydrochlorides and oxides, as well as double salts and complex salts. Furthermore, in addition to the above, Li, Zr, V, former, and Go are contained in the raw materials as elements or oxides, although in trace amounts.
P 、 Ti、 Ba、−等の塩酸塩も生成される。Hydrochlorides of P, Ti, Ba, etc. are also produced.
以上のようにして得られた塩酸塩類を含む酸性液を原材
料の残渣である砂状物とともに乾固して固形凝集剤を得
る。この固形凝集剤が含有する種々の金属塩は全体で約
25%である。The acidic liquid containing the hydrochloride salts obtained as described above is dried together with the sand-like material that is the residue of the raw material to obtain a solid flocculant. The solid flocculant contains a total of about 25% of various metal salts.
また100K gの前記原材料に100K gの25%
塩酸水溶液を加えて塩類と残液を含む酸性液を生成し。and 25% of 100Kg for 100Kg of the above raw materials.
Add an aqueous hydrochloric acid solution to generate an acidic solution containing salts and residual liquid.
次にこの水分の一部を蒸発させて120Kgとした後、
80Kgの水を加えて原材料の倍量の200K gの
水溶液とした後残液を濾過すると液状凝集剤が得られる
。Next, after evaporating a part of this water to 120 kg,
After adding 80 kg of water to make an aqueous solution of 200 kg, which is twice the amount of the raw material, the remaining liquid is filtered to obtain a liquid flocculant.
反応を室温で放置させる代りに、100℃で1時間加温
し、上記実施例と同様に実施し、同様の結果を得た。Instead of allowing the reaction to stand at room temperature, it was heated to 100° C. for 1 hour and carried out as in the above example with similar results.
実施例2〜3:析出凝集剤の使用例
表1に記載の被処理水を粗鑓過して固形物を除去した後
、実施例1に記載の凝集剤を表1に記載の割合で添加し
た。析出した凝集物をノクーミキュライトを通して除去
し、濾液について種々の測定を行ない、表1に記載の結
果を得た。Examples 2 to 3: Example of use of precipitated flocculant After the treated water listed in Table 1 is coarsely filtered to remove solids, the flocculant listed in Example 1 is added in the proportions listed in Table 1. did. The precipitated aggregates were removed through nocumiculite, and the filtrate was subjected to various measurements, and the results shown in Table 1 were obtained.
実施例4〜8
粗!!過した表1に記載の被処理水に実施例1に記載の
液状凝集剤を添加し、GaOで中和する以外は前記実施
例2〜3と同様に実施して表1に記載の結果を得た。Examples 4-8 Rough! ! The liquid flocculant described in Example 1 was added to the water to be treated described in Table 1, which had been subjected to a Obtained.
表1
実施例7
大腸菌及び有機物を含んだ河川の水に、実施例1に記載
の液状析出凝集剤を0.1容量z添加し、CaOで中和
し、活性炭の層を通して鑓過し、1!液をサンプリング
して試験を行なった。結果は次表の通りであった。Table 1 Example 7 0.1 volume z of the liquid precipitation flocculant described in Example 1 was added to river water containing E. coli and organic matter, neutralized with CaO, filtered through a layer of activated carbon, ! The liquid was sampled and tested. The results are shown in the table below.
表2
「発明の効果」
以上述べた如く、本発明の析出凝集剤によれば、廃水中
のBOD値及びCaO値を容易に規定値以下にすること
が出来るので、廃水処理の問題を木質いて、斯業に袴益
するところ極めて大きい・また、本発明の析出凝集剤は
、殺菌a1@をも併有すると共に、人体に有害な物質を
含有していないので、飲料用浄水剤として、或いは浴湯
の浄化剤として、従来のこの種薬剤にはみられなかった
絶大なる効果を特徴するTable 2 "Effects of the Invention" As stated above, according to the precipitated flocculant of the present invention, the BOD value and CaO value in wastewater can be easily reduced to below the specified values, so that the problem of wastewater treatment can be solved by reducing woody wastewater treatment.・In addition, the precipitated flocculant of the present invention has antibacterial properties and does not contain substances harmful to the human body, so it can be used as a drinking water purification agent or as a bath water purifier. As a purifying agent for hot water, it is characterized by tremendous effects not seen in conventional drugs of this type.
Claims (2)
のバーミキュライトが更に風化した土壌を、塩酸水溶液
に溶解させて得た多種の金属塩及び非金属塩を主成分と
して含有する酸性添加剤よりなることを特徴とする析出
凝集剤。(1) It is characterized by being made of an acidic additive containing various metal salts and non-metal salts as main components obtained by dissolving vermiculite in which mica-based minerals have weathered, or soil in which this vermiculite has further weathered, in an aqueous hydrochloric acid solution. A precipitating flocculant.
項に記載の析出凝集剤。(2) Claim 1 in which the mica-based mineral is black mica
Precipitation flocculant as described in section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7433286A JPS62234511A (en) | 1986-04-02 | 1986-04-02 | Flocculating agent for precipitation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7433286A JPS62234511A (en) | 1986-04-02 | 1986-04-02 | Flocculating agent for precipitation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62234511A true JPS62234511A (en) | 1987-10-14 |
Family
ID=13544057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7433286A Pending JPS62234511A (en) | 1986-04-02 | 1986-04-02 | Flocculating agent for precipitation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62234511A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994021349A1 (en) * | 1993-03-16 | 1994-09-29 | Chong Soo Hwang | Flocculant composition for removing trihalomethane and its precursors |
WO2000050345A3 (en) * | 1999-12-02 | 2001-02-01 | Minox Corp Usa | Mineral oxide liquid concentrates for water and wastewater treatment |
JP2008012487A (en) * | 2006-07-07 | 2008-01-24 | Astec:Kk | Flocculant and its manufacturing method |
WO2013008873A1 (en) * | 2011-07-12 | 2013-01-17 | Maeda Kazumi | Aqueous solution for purification purposes, and method for producing same |
WO2013035314A1 (en) * | 2011-09-09 | 2013-03-14 | 鹿児島県 | Flocculant |
JP2016215171A (en) * | 2015-05-26 | 2016-12-22 | 株式会社Tmc | Kitchen waste water-purifying agent and kitchen waste water purification method |
-
1986
- 1986-04-02 JP JP7433286A patent/JPS62234511A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994021349A1 (en) * | 1993-03-16 | 1994-09-29 | Chong Soo Hwang | Flocculant composition for removing trihalomethane and its precursors |
JP2788552B2 (en) * | 1993-03-16 | 1998-08-20 | 宗洙 黄 | Aggregate composition for drinking water to remove heavy metals and trihalomethanes and their precursors |
CN1070721C (en) * | 1993-03-16 | 2001-09-12 | 黄宗洙 | Flocculant composition for removing trihalomethane and its precursors |
WO2000050345A3 (en) * | 1999-12-02 | 2001-02-01 | Minox Corp Usa | Mineral oxide liquid concentrates for water and wastewater treatment |
US6527975B1 (en) | 1999-12-02 | 2003-03-04 | Minox Corporation Usa | Mineral oxide liquid concentrates for water and wastewater treatment |
JP2008012487A (en) * | 2006-07-07 | 2008-01-24 | Astec:Kk | Flocculant and its manufacturing method |
WO2013008873A1 (en) * | 2011-07-12 | 2013-01-17 | Maeda Kazumi | Aqueous solution for purification purposes, and method for producing same |
JP2013017964A (en) * | 2011-07-12 | 2013-01-31 | Kazumi Maeda | Aqueous solution for water purification and manufacturing method thereof |
KR101424140B1 (en) * | 2011-07-12 | 2014-08-01 | 카즈미 마에다 | Aqueous solution for purification purposes, and method for producing same |
WO2013035314A1 (en) * | 2011-09-09 | 2013-03-14 | 鹿児島県 | Flocculant |
JP2016215171A (en) * | 2015-05-26 | 2016-12-22 | 株式会社Tmc | Kitchen waste water-purifying agent and kitchen waste water purification method |
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