JP2003093804A - Purification agent for turbid wastewater and sludge - Google Patents
Purification agent for turbid wastewater and sludgeInfo
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- JP2003093804A JP2003093804A JP2001288072A JP2001288072A JP2003093804A JP 2003093804 A JP2003093804 A JP 2003093804A JP 2001288072 A JP2001288072 A JP 2001288072A JP 2001288072 A JP2001288072 A JP 2001288072A JP 2003093804 A JP2003093804 A JP 2003093804A
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- wastewater
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、各種工場廃水、下
水道汚濁廃水および土木廃水、浄化槽汚泥および下水処
理汚泥、さらには湖、沼、池、河川などの底質汚泥に含
まれる浮遊懸濁物質を凝集分離すると同時に重金属類や
溶存汚濁物質を吸着、固定、分離するための汚濁廃水お
よび汚泥の浄化処理剤に関するものである。TECHNICAL FIELD The present invention relates to a floating suspended substance contained in various industrial wastewater, sewer polluted wastewater and civil engineering wastewater, septic tank sludge and sewage treatment sludge, and bottom sediments such as lakes, swamps, ponds and rivers. The present invention relates to a purification and treatment agent for polluted wastewater and sludge for adsorbing, fixing and separating heavy metals and dissolved pollutants at the same time as coagulating and separating.
【0002】[0002]
【従来技術】汚濁廃水の浄化処理剤としては、従来から
無機系および有機系の各種凝集剤が使用されてきた。無
機系凝集剤としては、硫酸アルミニウムポリ塩化アルミ
ニウム(PAC)、アルミン酸ナトリウム(NaAlO
2)、硫酸鉄(FeSO4・7H2O)、塩化鉄(FeC
l3・6H2O)などのアルミニウム化合物や鉄化合物あ
るいは生石灰、消石灰などが用いられている。また、有
機高分子凝集剤としては、ポリアクリルアミド、アルギ
ン酸ナトリウムなどが用いられている。2. Description of the Related Art Conventionally, various inorganic and organic flocculants have been used as a purification treatment agent for polluted wastewater. As the inorganic coagulant, aluminum sulfate polyaluminum chloride (PAC), sodium aluminate (NaAlO
2), iron sulfate (FeSO 4 · 7H 2 O) , iron chloride (FeC
l 3 · 6H 2 O) aluminum compound and an iron compound or quicklime such, such as slaked lime is used. As the organic polymer flocculant, polyacrylamide, sodium alginate, etc. are used.
【0003】上述のような従来の無機系および有機系の
凝集剤は、いずれも廃水中の浮遊懸濁物質(SS)の凝
集分離を主目的としているが、50,000ppm程度のSSを
除去できる程度であり、充分な凝集効果を有していると
はいえない。また、従来の凝集剤はpH依存性があり、
処理剤により適正なpHが異なり、処理に際してpH調
整が必要な場合がある。例えば、2価または3価の鉄塩
が凝集剤として使用される場合の最適pHは6〜8程度
であり、さらにポリアクリルアミド系は、pHにより曇
点があり、温度にも曇点(60℃)がある。また、硫酸
アルミニウムの場合は、凝集剤として有効に作用するに
はアルカリ分が必要であり、pH4〜5では重合水酸化
アルミニウムイオンが生成される。しかも、添加量が多
すぎると廃水中で負に帯電しているSSのコロイド粒子
の表面電荷が逆転してしまい分散する。つまり、硫酸ア
ルミニウムによる凝集作用は負電荷のコロイド粒子を吸
着して正荷電で中和するものであるが、過剰に吸着する
とSSのコロイド粒子が正荷電を帯びて反発して分散し
てしまい、凝集効果を発揮できない。The above-mentioned conventional inorganic and organic flocculants are mainly aimed at flocculating and separating suspended solids (SS) in wastewater, but are capable of removing SS of about 50,000 ppm. Therefore, it cannot be said that it has a sufficient aggregation effect. Also, conventional flocculants have pH dependence,
The appropriate pH varies depending on the treating agent, and pH adjustment may be necessary during treatment. For example, when divalent or trivalent iron salt is used as an aggregating agent, the optimum pH is about 6 to 8. Furthermore, the polyacrylamide type has a cloud point depending on the pH, and the temperature also has a cloud point (60 ° C.). ). Further, in the case of aluminum sulfate, an alkaline component is required to effectively act as a flocculant, and polymerized aluminum hydroxide ions are generated at pH 4 to 5. Moreover, if the addition amount is too large, the surface charge of the SS colloidal particles, which are negatively charged in the waste water, is reversed and dispersed. In other words, the aggregating action of aluminum sulphate is to adsorb negatively charged colloidal particles and neutralize them with a positive charge. However, if they are excessively adsorbed, the SS colloidal particles are positively charged and repelled and dispersed. The aggregation effect cannot be exhibited.
【0004】さらに、従来の無機系凝集剤の場合、廃水
中のSSを凝集処理した後、分離水を放流する際には、
pH調整を必要とする場合がある。例えば、硫酸アルミ
ニウムは水中のアルカリ分を消費することから、水のp
Hを低下させる。無機系凝集剤の中でも、ポリ塩化アル
ミニウム(PAC)の場合は、水のpHをあまり変化さ
せない優れたものであるが、ポリ塩化アルミニウムは水
に溶解して使用され、SSを吸着架橋するので、凝集分
離した汚泥の含水率が高く、処理後の脱水汚泥の水切り
が必要となる。Further, in the case of the conventional inorganic coagulant, when the separated water is discharged after coagulating SS in the waste water,
pH adjustment may be required. For example, aluminum sulfate consumes alkali in water,
H is lowered. Among the inorganic flocculants, polyaluminum chloride (PAC) is an excellent one that does not change the pH of water so much, but polyaluminum chloride is used by dissolving it in water, and SS is adsorbed and cross-linked. The coagulated and separated sludge has a high water content, and it is necessary to drain the dehydrated sludge after treatment.
【0005】また、有機系の凝集剤についても、酸性領
域用、中性領域用、アルカリ領域用にそれぞれ適するよ
うに調整されているが、無機系凝集剤と同様にSSを凝
集分離した後の分離水を放流する際には、pH調整を必
要とする場合がある。さらに、上述のような、従来の無
機系または有機系の凝集剤でSSを凝集分離し、これを
脱水し、固形化した汚泥は、水に溶解し易く、また重金
属が固定されておらず再溶出するなどの問題点が多くあ
った。The organic flocculant is also adjusted to be suitable for the acidic region, the neutral region, and the alkaline region, respectively. When releasing the separated water, it may be necessary to adjust the pH. Furthermore, as described above, sludge that is coagulated and separated by a conventional inorganic or organic coagulant, dehydrated, and solidified is easily dissolved in water, and heavy metals are not fixed, and sludge is not recovered. There were many problems such as elution.
【0006】[0006]
【発明が解決しようとする課題】本発明は上記のような
従来の無機系または有機系の凝集剤を用いた汚濁廃水や
汚泥の処理における問題点に鑑み、高濃度のSSでも充
分に凝集し、沈殿させることが可能であり、また、pH
に関係なく汚濁廃水や汚泥中のSSや重金属などを凝
集、沈殿させることができ、しかも分離水の放流の際に
pH調整する必要がなく、処置後に分離された脱水汚泥
の脱水率が高く、即ち含水率が低く、廃棄物の量を低減
でき、且つ脱水し、固形化した汚泥は、水に溶解しにく
く、重金属などが再溶出することがない浄化処理剤を提
供せんとするものである。In view of the problems in the treatment of polluted wastewater and sludge using the conventional inorganic or organic flocculant as described above, the present invention sufficiently flocculates even in high concentration SS. It is possible to precipitate, and also the pH
Regardless of, it is possible to aggregate and precipitate SS and heavy metals in polluted wastewater and sludge, and there is no need to adjust the pH when releasing the separated water, and the dehydration rate of the dehydrated sludge separated after the treatment is high, That is, the sludge, which has a low water content, can reduce the amount of waste, and is dehydrated and solidified, is difficult to dissolve in water and provides a purification treatment agent in which heavy metals and the like are not re-eluted. .
【0007】[0007]
【課題を解決するための手段】本発明は、上記従来技術
における問題点を解決すべく鋭意研究した結果、結晶性
のアルミノケイ酸塩、ナトリウム塩、アルミニウム塩お
よび金属酸化物からなる汚濁廃水および汚泥の浄化処理
剤を提供するにいたった。すなわち、結晶性のアルミノ
ケイ酸塩、ナトリウム塩、アルミニウム塩および金属酸
化物からなることを特徴とする汚濁廃水および汚泥の浄
化処理剤であって、結晶性のアルミノケイ酸塩がゼオラ
イト(xAl2O3ySiO2)であり、ナトリウム塩が
炭酸ナトリウム(Na2CO3)であり、アルミニウム塩
が硫酸アルミニウム[Al2(SO4)3]、塩化アルミ
ニウム(AlCl3)および硫酸カリウムアルミニウム
[KAl2(SO4)2]のいずれか1種または2種以上
であり、金属酸化物が二酸化珪素(SiO2)、酸化ア
ルミニウム(Al2O3)、酸化カルシウム(CaO)、
酸化鉄(Fe2O3)および酸化マグネシウム(MgO)
のいずれか1種または2種以上であることが、好まし
い。DISCLOSURE OF THE INVENTION As a result of intensive studies to solve the above problems in the prior art, the present invention results in a polluted wastewater and sludge comprising crystalline aluminosilicate, sodium salt, aluminum salt and metal oxide. To provide a purification treatment agent. That is, a purification treatment agent for polluted wastewater and sludge, which is characterized by comprising crystalline aluminosilicate, sodium salt, aluminum salt and metal oxide, wherein the crystalline aluminosilicate is zeolite (xAl 2 O 3 ySiO 2 ), the sodium salt is sodium carbonate (Na 2 CO 3 ), and the aluminum salt is aluminum sulfate [Al 2 (SO 4 ) 3 ], aluminum chloride (AlCl 3 ) and potassium aluminum sulfate [KAl 2 (SO 2 4 ) 2 ], and the metal oxide is silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), calcium oxide (CaO),
Iron oxide (Fe 2 O 3 ) and magnesium oxide (MgO)
It is preferable that any one kind or two kinds or more of the above.
【0008】本発明の第二は、ゼオライト(xAl2O3
ySiO2)、硫酸カリウムアルミニウム[KAl2(S
O4)2]、炭酸ナトリウム(Na2CO3)、二酸化珪素
(SiO2)、酸化アルミニウム(Al2O3)、酸化カ
ルシウム(CaO)、酸化鉄(Fe2O3)および酸化マ
グネシウム(MgO)からなることを特徴とする汚濁廃
水および汚泥の浄化処理剤であって、ゼオライトの含有
量は15乃至45重量%が好ましく、硫酸カリウムアル
ミニウムの含有量は5乃至25重量%が好ましく、炭酸
ナトリウムの含有量は10乃至30重量%が好ましく、
二酸化珪素の含有量は5乃至40%が好ましく、酸化ア
ルミニウムの含有量は3乃至25%が好ましく、酸化カ
ルシウムの含有量は5乃至30%が好ましく、酸化鉄の
含有量は1乃至7重量%が好ましく、酸化マグネシウム
の含有量は1乃至5重量%が好ましい。The second aspect of the present invention is to use zeolite (xAl 2 O 3
ySiO 2 ), potassium aluminum sulfate [KAl 2 (S
O 4) 2], sodium carbonate (Na 2 CO 3), silicon dioxide (SiO 2), aluminum oxide (Al 2 O 3), calcium oxide (CaO), iron oxide (Fe 2 O 3) and magnesium oxide (MgO ), The content of zeolite is preferably 15 to 45% by weight, the content of potassium aluminum sulfate is preferably 5 to 25% by weight, and sodium carbonate is The content of is preferably 10 to 30% by weight,
The content of silicon dioxide is preferably 5 to 40%, the content of aluminum oxide is preferably 3 to 25%, the content of calcium oxide is preferably 5 to 30%, and the content of iron oxide is 1 to 7% by weight. Is preferable, and the content of magnesium oxide is preferably 1 to 5% by weight.
【0009】[0009]
【発明の実施の形態】本発明にいう浄化用処理剤とは、
各種工場廃水、下水道汚濁廃水および土木廃水、浄化槽
汚泥および下水処理汚泥、さらには湖、沼、池、河川な
どの底質汚泥に含まれる浮遊懸濁物質(SS)を凝集分
離する薬剤および同時に重金属類や溶存汚濁物質を吸
着、固定、分離するための汚濁廃水および汚泥を浄化処
理する薬剤をいう。従来の汚濁廃水の浄化処理剤として
は、無機系凝集剤として硫酸アルミニウムポリ塩化アル
ミニウム(PAC)、アルミン酸ナトリウム(NaAlO
2)、硫酸鉄(FeSO4・7H2O)、塩化鉄(FeC
l3・6H2O)などのアルミニウム化合物、鉄化合物あ
るいは生石灰、消石灰などを、有機高分子凝集剤として
ポリアクリルアミド、アルギン酸ナトリウムなどを、例
示することができる。BEST MODE FOR CARRYING OUT THE INVENTION The purifying treatment agent according to the present invention is
Chemicals and heavy metals that coagulate and separate suspended suspended matter (SS) contained in various plant wastewater, sewer polluted wastewater and civil engineering wastewater, septic tank sludge and sewage treatment sludge as well as bottom sludge in lakes, swamps, ponds, rivers, etc. A chemical that purifies polluted wastewater and sludge for adsorbing, fixing and separating substances and dissolved pollutants. As a conventional purification treatment agent for polluted wastewater, aluminum sulfate polyaluminum chloride (PAC), sodium aluminate (NaAlO) as an inorganic flocculant is used.
2), iron sulfate (FeSO 4 · 7H 2 O) , iron chloride (FeC
l 3 · 6H 2 O) aluminum compounds such as iron compounds or quick lime, slaked lime, etc., polyacrylamide, sodium alginate, etc. as the organic polymer flocculant, can be exemplified.
【0010】本発明にいうゼオライトは、3次元網目構
造をもつテクトアルミノケイ酸塩であって、その化学構
造はケイ素(Si)とその回りに存在する4個の酸素
(O)がsp3混成軌道を形成することによって結合した
ケイ素四面体と、この四面体のケイ素にかわってアルミ
ニウムが置換したアルミニウム四面体(4配位アルミニ
ウム)とを主な構成要素としており、これらの四面体ど
うしが4つの頂点を共有するように連結した形に組み立
てられている。化学組成の一般式はxAl2O3ySiO
2である。多孔質の構造中には、加熱や脱気により容易
に脱水する弱く保持された水を含む。低温で脱水したゼ
オライトはガスの選択的な吸着性があり、分子篩とな
る。また、多くは陽イオン交換能をもっている。この交
換能は4配位アルミニウムの位置にAlとOの電気的ア
ンバランスに基づく永久的負電荷が発生するためであ
る。交換容量がpHに殆ど依存しないことからゼオライ
トは安定した陽イオン交換体となる。ゼオライトは天然
産の天然ゼオライトや触媒などに使う高純度の合成ゼオ
ライトのほか、石炭灰などの廃棄物から得られる人工ゼ
オライトがある。ゼオライトの含有量は、15〜45重
量%が好ましく、20〜30重量%がより好ましい。ゼ
オライトの含有量が15重量%未満であれば、ラジカル
反応が弱くなり、重金属の吸着率が低下し、45重量%
を超えるとエトリンガイト反応が弱くなる。ここでエト
リンガイト反応とは、アルミン酸カルシウムが含水泥状
物中の水との水和反応により水中に溶出してくる硫酸カ
ルシウムと反応し、エトリンガイト(ettringite:Ca
6Al2(SO4)3(OH)2・26H2O)やケイ酸カルシ
ウム水和物が生成する反応をいう。The zeolite referred to in the present invention is a tectoaluminosilicate having a three-dimensional network structure, and its chemical structure is silicon (Si) and four oxygen (O) existing around it are sp 3 hybrid orbitals. Are formed by forming a silicon tetrahedron and an aluminum tetrahedron (tetracoordinated aluminum) in which aluminum is substituted for the silicon of the tetrahedron as main components, and these tetrahedrons have four elements. It is assembled in a connected form so that the vertices are shared. The general formula of the chemical composition is xAl 2 O 3 ySiO
Is 2 . The porous structure includes weakly retained water that is easily dehydrated by heating and degassing. Zeolite dehydrated at a low temperature has a selective gas adsorption property and becomes a molecular sieve. Many also have cation exchange capacity. This exchange ability is because a permanent negative charge is generated at the position of tetracoordinated aluminum due to the electrical imbalance between Al and O. Zeolites are stable cation exchangers because the exchange capacity is largely independent of pH. Zeolites include naturally occurring natural zeolite, high-purity synthetic zeolite used for catalysts, and artificial zeolite obtained from waste such as coal ash. The content of the zeolite is preferably 15 to 45% by weight, more preferably 20 to 30% by weight. If the content of zeolite is less than 15% by weight, the radical reaction is weakened and the adsorption rate of heavy metals is reduced, resulting in 45% by weight.
If it exceeds, the ettringite reaction becomes weak. Here, the ettringite (Ca) reaction is a reaction of calcium aluminate with calcium sulfate that is eluted into water due to a hydration reaction with water in a water-containing mud, and the ettringite (Ca
6 Al 2 (SO 4 ) 3 (OH) 2 · 26H 2 O) and a reaction in which calcium silicate hydrate is formed.
【0011】本発明に用いる硫酸アルミニウムカリウム
[KAl2(SO4)2]は、常温では 十二水塩が最も
普通に得られ、ミョウバン、カリミョウバン、カリウム
ミョウバンなどと呼ばれるものであって、Al3+イオン
の性質を利用してコロイド凝結剤として使用されてい
る。硫酸アルミニウムカリウムの含有量は、5〜25重
量%が好ましく、10〜20重量%がより好ましい。硫
酸アルミニウムカリウムの含有量が5重量%未満であれ
ば、塩基の発生が低下し、ケイ酸塩による沈殿作用が発
揮されがたくなり、25重量%を超えると過電位にな
り、沈殿後汚泥のポゾラン反応が充分に発揮できなくな
る。ここでポゾラン反応とは、ポゾランや酸性白土のよ
うに無定形のシリカを主成分とし、可溶性の二酸化珪素
や酸化アルミニウムを含み、水中の水酸化カルシウムと
反応し、不溶性のCa−Si−H2Oゲルや Ca−A
l−H2Oゲルを生成する反応をいう。The potassium aluminum sulfate [KAl 2 (SO 4 ) 2 ] used in the present invention is most commonly obtained as a dodecahydrate at room temperature, and is called alum, potassium alum, potassium alum, etc. It is used as a colloid coagulant by utilizing the property of 3+ ions. The content of potassium aluminum sulfate is preferably 5 to 25% by weight, more preferably 10 to 20% by weight. If the content of potassium aluminum sulfate is less than 5% by weight, the generation of base is reduced, and it becomes difficult to exert the precipitation action of silicate. Pozzolanic reaction cannot be fully exerted. Here, the pozzolanic reaction is mainly composed of amorphous silica such as pozzolan or acid clay, contains soluble silicon dioxide and aluminum oxide, reacts with calcium hydroxide in water, and is insoluble Ca-Si-H 2 O gel and Ca-A
1-H 2 O refers to a reaction that produces a gel.
【0012】本発明に用いる炭酸ナトリウムの含有量
は、10〜30重量%が好ましく、15〜25重量%が
より好ましい。炭酸ナトリウムの含有量が10重量%未
満であればナトリウム塩が少なく、沈殿の発生が遅れ
る。また、炭酸ナトリウムが30重量%を超えると中和
作用が過剰になり、pHが上昇する。The content of sodium carbonate used in the present invention is preferably 10 to 30% by weight, more preferably 15 to 25% by weight. When the content of sodium carbonate is less than 10% by weight, the amount of sodium salt is small and the precipitation is delayed. Further, when the content of sodium carbonate exceeds 30% by weight, the neutralizing action becomes excessive and the pH rises.
【0013】本発明に用いる二酸化珪素の含有量は、5
〜40重量%が好ましく、20〜30重量%がより好ま
しい。二酸化珪素の含有量が5重量%未満であればエト
リンガイト反応は起きず、二酸化珪素が40重量%を超
えるとラジカル反応が弱くなる。The content of silicon dioxide used in the present invention is 5
-40% by weight is preferable, and 20-30% by weight is more preferable. If the content of silicon dioxide is less than 5% by weight, the ettringite reaction does not occur, and if the content of silicon dioxide exceeds 40% by weight, the radical reaction becomes weak.
【0014】本発明に用いる酸化アルミニウムは、水中
でコロイド状となり、SSのコロイド粒子間の電位低下
を促して、粒子を崩壊、微粒子化し、疎水性の凝固体を
形成するので、高濃度のSSを凝集、沈殿させることが
可能である。また、処理後に分離された脱水汚泥の脱水
率が高く、すなわち含水率が低く、廃棄物を低減でき
る。しかも、処理後の脱水汚泥が溶解し難く、重金属な
どが再溶出することがない。酸化アルミニウムの含有量
は、3〜25重量%が好ましく、10〜20重量%がよ
り好ましい。酸化アルミニウムの含有量が3重量%未満
であればイオン交換能が弱くなり、25重量%を超える
と過電位になり、凝集力が弱くなる。The aluminum oxide used in the present invention becomes colloidal in water, promotes a decrease in the potential between SS colloidal particles, disintegrates the particles, atomizes them, and forms a hydrophobic coagulation body. Can be aggregated and precipitated. In addition, the dehydrated sludge separated after the treatment has a high dehydration rate, that is, a low water content, and waste can be reduced. Moreover, the dehydrated sludge after treatment is difficult to dissolve, and heavy metals and the like do not re-elute. The content of aluminum oxide is preferably 3 to 25% by weight, more preferably 10 to 20% by weight. When the content of aluminum oxide is less than 3% by weight, the ion exchange capacity becomes weak, and when it exceeds 25% by weight, the potential becomes overpotential and the cohesive force becomes weak.
【0015】本発明に用いる酸化カルシウムは、水中で
活性シリカとあいエトリンガイト反応となる。その含有
量は5〜30重量%が好ましく、5〜25重量%がより
好ましい。酸化カルシウムの含有量が5重量%未満であ
ればエトリンガイト反応ができなくなり、30重量%を
超えるとラジカル反応が弱くなる。Calcium oxide used in the present invention forms an ettringite reaction with active silica in water. The content is preferably 5 to 30% by weight, more preferably 5 to 25% by weight. If the content of calcium oxide is less than 5% by weight, the ettringite reaction cannot be performed, and if it exceeds 30% by weight, the radical reaction becomes weak.
【0016】本発明に用いる酸化鉄は、乳化作用をも
ち、アルミニウムとともに共沈作用に働き、その含有量
は1〜7重量%が好ましく、1〜2重量%がより好まし
い。酸化鉄の含有量が1重量%未満であれば乳化が難し
く、7重量%を超えると共沈作用が過剰となり、赤茶色
の水になる。The iron oxide used in the present invention has an emulsifying action and works together with aluminum for a coprecipitation action, and its content is preferably 1 to 7% by weight, more preferably 1 to 2% by weight. If the iron oxide content is less than 1% by weight, the emulsification is difficult, and if it exceeds 7% by weight, the coprecipitation action becomes excessive, resulting in reddish brown water.
【0017】本発明に用いる酸化マグネシウムの含有量
は、1〜5重量%が好ましく、1〜2重量%がより好ま
しい。酸化マグネシウムの含有量が1重量%未満であれ
ば汚泥の含有率が高くなり、酸化マグネシウムが5重量
%を超えると反応が遅くなる。The content of magnesium oxide used in the present invention is preferably 1 to 5% by weight, more preferably 1 to 2% by weight. When the content of magnesium oxide is less than 1% by weight, the sludge content is high, and when the content of magnesium oxide exceeds 5% by weight, the reaction becomes slow.
【0018】上記各成分の具体的な配合割合は、処理す
る廃水や汚泥中に含まれる重金属類または溶剤、アルコ
ール類、無機物質、有機物質などの含有量により、上記
範囲内で適宜調整することができる。The specific mixing ratio of each of the above components should be appropriately adjusted within the above range depending on the contents of heavy metals or solvents, alcohols, inorganic substances, organic substances, etc. contained in the wastewater or sludge to be treated. You can
【0019】本発明の浄化処理剤は、上記の各成分を混
合機で混合・攪拌することにより調製することができ
る。具体的には、例えば、ロッキングミキサーなどの粉
体混合機に所定量の各成分の原料を色素玉とともに投入
し、攪拌混合して色素玉の分散状況から各成分が均一化
したことを確認した後、色素玉を篩などにより除去して
調製する。The purification treatment agent of the present invention can be prepared by mixing and stirring the above components with a mixer. Specifically, for example, a powder mixer such as a rocking mixer was charged with a predetermined amount of raw materials for each component together with a pigment ball, and the mixture was stirred and mixed, and it was confirmed from the dispersion state of the pigment ball that each component was homogenized. Then, the dye balls are removed by a sieve or the like to prepare.
【0020】廃水処理に際しては、本発明の浄化処理剤
を廃水中や汚泥中に投入し、乱流攪拌することで、廃水
や汚泥中の汚濁物質を凝集する。本発明の浄化処理剤を
汚濁廃水や汚泥に対して添加して乱流攪拌することによ
り、1〜2分で反応は完了し、汚濁物質は析出凝固し、
攪拌を止めると生成した凝固汚泥は直ちに沈降分離しは
じめ、上澄水と凝固汚泥とが完全に分離し、その界面も
鮮明となる。これにより、廃水や汚泥中に含まれる浮遊
懸濁物質は凝固汚泥として凝集沈殿し、また重金属その
他の有害物質などが凝固汚泥に吸着、固定される。分離
した凝固汚泥は、安定性が極めて高く、再度攪拌しても
崩壊または溶解することがなく、むしろ汚泥密度は増大
する傾向がある。また、経時変化もなく安定性が高い。
また、分離した凝固汚泥は、酸化物を主体とし、しかも
粒状化しているので、極めて脱水性に優れた汚泥構成と
なる。これに対し、従来の有機または無機の凝集剤で形
成された凝固汚泥は水酸化物を主体に構成されているた
め脱水性に欠けている。In treating wastewater, the purification treatment agent of the present invention is put into wastewater or sludge, and turbulent flow agitation is performed to aggregate the pollutants in the wastewater or sludge. By adding the purification treatment agent of the present invention to polluted wastewater or sludge and stirring the mixture in a turbulent flow, the reaction is completed in 1 to 2 minutes, and the pollutant is precipitated and solidified,
When the stirring is stopped, the coagulated sludge produced immediately begins to settle and separate, and the supernatant water and the coagulated sludge are completely separated, and the interface becomes clear. As a result, floating suspended substances contained in wastewater and sludge are coagulated and settled as coagulated sludge, and heavy metals and other harmful substances are adsorbed and fixed to the coagulated sludge. The separated coagulated sludge has extremely high stability, does not disintegrate or dissolve even when stirred again, and rather tends to increase the sludge density. Further, there is no change with time and the stability is high.
Further, the separated coagulated sludge is mainly composed of oxides and is granulated, so that the sludge has a very excellent dehydration property. On the other hand, the coagulated sludge formed by the conventional organic or inorganic coagulant is mainly composed of hydroxide, and thus lacks the dewatering property.
【0021】本発明の浄化処理剤の添加量は、廃水の汚
濁濃度や汚泥の含水率にもよるが、通常100〜700
ppm(1m3当たり100〜700g)の範囲内で目
的とする凝集、分離効果を達成することができる。The amount of the purification treatment agent of the present invention to be added depends on the pollutant concentration of wastewater and the water content of sludge, but is usually 100 to 700.
Within the range of ppm (100 to 700 g per 1 m 3 ), the desired aggregation and separation effects can be achieved.
【0022】上述のような本発明の浄化処理剤は、各種
の汚濁廃水処理法において使用することができる。例え
ば、物理的処理では、スクリーン法、沈殿法、浮上分離
法、濾過法など、物理化学的処理では、凝集沈殿法、加
圧浮上法、活性炭吸着法、イオン交換法、逆浸透法、電
気透析法などの各種高度処理、化学的処理では、pH調整
法、中和法、酸化法、還元法など、生物処理では、活性
汚泥法、生物膜法、ラグーン法などの好気性処理や嫌気
性処理、また、これらの処理法を複数組み合わせて処理
する場合にも使用することができる。例えば、浮遊懸濁
物質の多い廃水処理には凝集沈殿法、懸濁性廃水にはイ
オン交換法、脱窒素を目的として嫌気・好気活性汚泥
法、コロイド粒子の除去には限外濾過法、また芳香族化
合物の除去には活性炭吸着法などに適用される。さらに
は、上記のような廃水処理に伴い発生する汚泥の処理に
も使用することができる。The purification treatment agent of the present invention as described above can be used in various pollution wastewater treatment methods. For example, physical treatment includes screen method, precipitation method, flotation method, filtration method, and physicochemical treatment includes coagulation sedimentation method, pressure flotation method, activated carbon adsorption method, ion exchange method, reverse osmosis method, and electrodialysis. Various advanced treatments such as chemical treatment, pH adjustment method, neutralization method, oxidation method and reduction method in chemical treatment, aerobic treatment such as activated sludge method, biofilm method and lagoon method in biological treatment and anaerobic treatment Also, it can be used when a plurality of these treatment methods are combined for treatment. For example, coagulation sedimentation method for wastewater treatment with a lot of suspended suspended solids, ion exchange method for suspension wastewater, anaerobic / aerobic activated sludge method for denitrification, ultrafiltration method for removal of colloidal particles, Further, it is applied to the activated carbon adsorption method for removing aromatic compounds. Further, it can be used for treating sludge generated by the above wastewater treatment.
【0023】例えば、物理的廃水処理法であるスクリー
ン法による処理に先立ち本発明の浄化処理剤を用いるこ
とで、スクリーンの逆洗浄の回数が少なくて済む。ま
た、活性炭吸着法による廃水処理に先立ち、本発明の浄
化処理剤により廃水を処理することで、活性炭の寿命が
伸び、取り替え回数が低減される。また、pH調整法によ
る廃水処理の場合には、本発明の処理剤により処理する
ことで懸濁物質が除去され、且つアルミナ両性イオンの
作用で薬剤の使用量を低減させることができる。また、
イオン交換法の場合には、本発明の浄化処理剤は、ゼオ
ライトのイオン交換能とアルミナ両性イオン交換能によ
る天然無機イオン交換樹脂として作用する。さらに、中
和法、酸化法、還元法においても、本発明の浄化処理剤
による処理を併用すれば、より効果的である。また、脱
窒素を目的とする嫌気、好気活性汚泥法においても、ア
ンモニア窒素が亜硝酸窒素になったものであれば、本発
明の浄化処理剤により沈殿汚泥とともに除去することが
できる。さらに、芳香族化合物の除去に際しても、エマ
ルション化すれば、本発明の浄化処理剤により除去する
ことが可能である。For example, by using the purification treatment agent of the present invention prior to the treatment by the screen method which is a physical wastewater treatment method, the number of times of back washing of the screen can be reduced. Moreover, by treating the wastewater with the purification treatment agent of the present invention prior to the treatment of the wastewater by the activated carbon adsorption method, the life of the activated carbon is extended and the number of times of replacement is reduced. Further, in the case of wastewater treatment by the pH adjusting method, the treatment with the treatment agent of the present invention removes suspended matter, and the amount of the agent used can be reduced by the action of the alumina zwitterion. Also,
In the case of the ion exchange method, the purification treatment agent of the present invention acts as a natural inorganic ion exchange resin due to the ion exchange ability of zeolite and the amphoteric ion exchange ability of alumina. Furthermore, even in the neutralization method, the oxidation method and the reduction method, it is more effective if the treatment with the purification treatment agent of the present invention is used in combination. Further, also in the anaerobic and aerobic activated sludge method for the purpose of denitrification, if the ammonia nitrogen becomes nitrite nitrogen, it can be removed together with the precipitated sludge by the purification treatment agent of the present invention. Further, when the aromatic compound is removed, it can be removed by the purification treatment agent of the present invention if it is emulsified.
【0024】上述のような本発明に係る汚濁廃水および
汚泥の処理剤の処理対象となる廃水としては、例えば、
石炭を乾留してコークスを製造する際に副生するシアン
を含むコークス製造廃水、電気メッキの過程で使用する
シアン化合物やクロム化合物などを含有するメッキ工場
廃水、漁網の防汚剤に使用するトリブチル錫を含有する
漁網工場廃水、触媒用水銀として使用するメチル水銀を
含有する有機合成工場廃水、洗浄剤としてテトラクロロ
エチレン、トリクロロエチレンなどの塩素化合物を使用
する半導体工場廃水、クリーニング工場からの廃水な
ど、重金属その他の有害物質を含む各種廃水が挙げられ
る。また、本発明の浄化処理剤は、有機性で濃度が高い
蒸留酒製造工場からの廃水、なめし剤に使用するクロム
などの有害物質を含む有機性のなめし革製造工場からの
廃水、繊維工業からの有機性または無機性の廃水処理な
どにも用いることができる。さらには、塗装工場から排
出される、アルキド樹脂、アクリル樹脂、ポリエステル
樹脂などの合成樹脂、界面活性剤、アセトン、メチルエ
チルケトンなどのケトン類、キシロール、トルエン、プ
ロピレングリコールなどの多価アルコール類、エステル
系化合物、アミル系化合物などを含有する廃水処理にも
用いることができる。Examples of the wastewater to be treated by the treatment agent for polluted wastewater and sludge according to the present invention as described above include:
Coke-making wastewater containing cyanine, which is a by-product of coking carbon to produce coke, plating plant wastewater containing cyanide and chromium compounds used in the electroplating process, and tributyl used as an antifouling agent for fishing nets. Heavy metals such as fishing net factory wastewater containing tin, organic synthesis factory wastewater containing methylmercury used as mercury for catalysts, semiconductor factory wastewater using chlorine compounds such as tetrachlorethylene and trichlorethylene as cleaning agents, wastewater from cleaning plants, etc. Various kinds of wastewater containing harmful substances are listed. Further, the purification treatment agent of the present invention is an organic waste water from a concentrated liquor manufacturing plant, a waste water from an organic tanning leather manufacturing plant containing harmful substances such as chromium used in a tanning agent, and a textile industry. It can also be used for treating organic or inorganic wastewater. Furthermore, synthetic resins such as alkyd resins, acrylic resins and polyester resins, surfactants, ketones such as acetone and methyl ethyl ketone, polyhydric alcohols such as xylol, toluene and propylene glycol, and ester-based products that are discharged from coating plants. It can also be used for treating wastewater containing compounds, amyl compounds and the like.
【0025】[0025]
【実施例】本発明の詳細を実施例に基づいて説明する
が、本発明の趣旨はこれに限定されるものではない。EXAMPLES The details of the present invention will be described based on examples, but the gist of the present invention is not limited thereto.
【0026】本発明の浄化処理剤の調製方法の1例を次
に示す。
(製造例1)天然ゼオライト(インドネシア産)84k
g(28重量%)、焼ミョウバン[大明化学工業(株)
製、硫酸アルミニウムカリウム:AlK(SO4)2]3
9kg(13重量%)、炭酸ナトリウム(Na2CO3)
45kg(15重量%)、二酸化珪素(SiO2)72
kg(24重量%)、酸化アルミニウム(Al2O3)3
9kg(13重量%)、酸化カルシウム(CaO)15
kg(5重量%)、酸化鉄(Fe2O3)3kg(1重量
%)、および酸化マグネシウム(MgO)3kg(1重
量%)からなる300kgの原料をロッキングミキサー
に投入し、これに直径1mmの塩化ビニル樹脂製ビーズ
を色素玉として50ml添加し、2時間混合して色素玉
の均一分散を確認した上で、篩を用いて色素玉を除去し
たものを、浄化処理剤として使用した。An example of the method for preparing the purification treatment agent of the present invention is shown below. (Production Example 1) Natural zeolite (made in Indonesia) 84k
g (28% by weight), baked alum [Daimei Chemical Industry Co., Ltd.
Made, potassium aluminum sulfate: AlK (SO 4 ) 2 ] 3
9 kg (13% by weight), sodium carbonate (Na 2 CO 3 )
45 kg (15% by weight), silicon dioxide (SiO 2 ) 72
kg (24% by weight), aluminum oxide (Al 2 O 3 ) 3
9 kg (13% by weight), calcium oxide (CaO) 15
300 kg of raw material consisting of kg (5% by weight), iron oxide (Fe 2 O 3 ) 3 kg (1% by weight), and magnesium oxide (MgO) 3 kg (1% by weight) was put into a rocking mixer, and the diameter was 1 mm. 50 ml of the vinyl chloride resin beads as described above were added as dye balls, and the mixture was mixed for 2 hours to confirm uniform dispersion of the dye balls, and then the dye balls were removed using a sieve to be used as a purification treatment agent.
【0027】廃水水質の測定項目および水質測定方法を
表1に示した。Table 1 shows the measurement items of wastewater water quality and the water quality measurement method.
【0028】[0028]
【表1】 [Table 1]
【0029】(実施例1)金属精錬所から排出された廃
水500mlをビーカーに入れ、これに製造例1で製造
した浄化処理剤を100ppm添加し、攪拌棒で1分間
乱流攪拌したのち3分間静置した。静置3分後には、汚
濁物質が沈降分離し、上澄液は透明になった。この上澄
水を1μmメッシュの濾布(分析用)で濾過して沈殿し
た汚泥を分離した。分離した上澄水と原水について、水
質を測定した。この試験を2回行い、結果を表2に示し
た。(Example 1) 500 ml of waste water discharged from a metal refinery was placed in a beaker, 100 ppm of the purification treatment agent produced in Production Example 1 was added thereto, and the mixture was stirred for 1 minute by a stir bar and then stirred for 3 minutes. I let it stand. After standing for 3 minutes, the pollutant separated by sedimentation and the supernatant became transparent. The supernatant water was filtered through a 1 μm mesh filter cloth (for analysis) to separate precipitated sludge. The water quality of the separated supernatant water and raw water was measured. This test was performed twice, and the results are shown in Table 2.
【0030】[0030]
【表2】 [Table 2]
【0031】(実施例2)メッキ工場の3つのラインか
ら排出された廃水500mlに、それぞれ製造例1で製
造した浄化処理剤を200ppm添加し、実施例1と同
様に処理を行い、分離した上澄水と原水について、水質
を測定した。その結果を表3に示した。(Example 2) To 500 ml of waste water discharged from three lines of a plating factory, 200 ppm of the purification treatment agent produced in Production Example 1 was added, respectively, and treated in the same manner as in Example 1 and separated. Water quality was measured for clear water and raw water. The results are shown in Table 3.
【0032】[0032]
【表3】 [Table 3]
【0033】(実施例3)メッキ工場から排出された廃
水500mlに、製造例1で製造した浄化処理剤を30
0ppm添加し、実施例1と同様に処理を行い、分離し
た上澄水と原水について、水質を測定した。その結果を
表4に示した。(Embodiment 3) The purification treatment agent produced in Production Example 1 is added to 500 ml of waste water discharged from the plating factory.
0 ppm was added, the same treatment as in Example 1 was carried out, and the water quality of the separated supernatant water and raw water was measured. The results are shown in Table 4.
【0034】[0034]
【表4】 [Table 4]
【0035】(実施例4)メッキ工場から排出された廃
水500mlに、製造例1で製造した浄化処理剤を20
0ppm添加し、実施例1と同様に処理を行い、分離し
た上澄水と原水について、水質を測定した。その結果を
表5に示した。(Example 4) 20 ml of the purification treatment agent produced in Production Example 1 was added to 500 ml of waste water discharged from the plating factory.
0 ppm was added, the same treatment as in Example 1 was carried out, and the water quality of the separated supernatant water and raw water was measured. The results are shown in Table 5.
【0036】[0036]
【表5】 [Table 5]
【0037】(実施例5)乾電池製造工場から排出され
た廃水500mlに、製造例1で製造した浄化処理剤を
300ppm添加し、実施例1と同様に処理を行い、分
離した上澄水と原水について、水質を測定した。その結
果を表6に示した。(Example 5) To 500 ml of waste water discharged from a dry cell manufacturing plant, 300 ppm of the purification treatment agent produced in Production Example 1 was added and treated in the same manner as in Example 1 to separate the supernatant water and raw water. , The water quality was measured. The results are shown in Table 6.
【0038】[0038]
【表6】 [Table 6]
【0039】(実施例6)金属加工工場(ガス器具製造
工場)から排出された、塗装前の器具の洗浄廃水500
mlに、製造例1で製造した浄化処理剤を300ppm
添加し、実施例1と同様に処理を行い、分離した上澄水
と原水について、水質を測定した。その結果を表7に示
した。(Embodiment 6) Washing wastewater 500 of a device before painting discharged from a metalworking factory (gas appliance manufacturing factory)
300 ml of the purification treatment agent produced in Production Example 1
Water was added and treated in the same manner as in Example 1, and the water quality of the separated supernatant water and raw water was measured. The results are shown in Table 7.
【0040】[0040]
【表7】 [Table 7]
【0041】(実施例7)金属加工工場(農耕機械製造
工場)から排出された、塗装前の器具の洗浄廃水500
mlに、製造例1で製造した浄化処理剤を150ppm
添加し、実施例1と同様に処理を行い、分離した上澄水
と原水について、水質を測定した。その結果を表8に示
した。(Embodiment 7) Washing wastewater 500 of equipment before painting discharged from a metalworking factory (agricultural machinery manufacturing factory)
150 ml of the purification treatment agent produced in Production Example 1 in ml
Water was added and treated in the same manner as in Example 1, and the water quality of the separated supernatant water and raw water was measured. The results are shown in Table 8.
【0042】[0042]
【表8】 [Table 8]
【0043】(実施例8)金属加工工場(スチール家具
製造工場)から排出された、塗装前のスチール家具の洗
浄廃水500mlに、製造例1で製造した浄化処理剤を
200ppm添加し、実施例1と同様に処理を行い、分
離した上澄水と原水について、水質を測定した。その結
果を表9に示した。Example 8 To 500 ml of waste water for washing steel furniture before painting discharged from a metalworking factory (steel furniture manufacturing factory), 200 ppm of the purification treatment agent produced in Production Example 1 was added. The same treatment was performed, and the water quality of the separated supernatant water and raw water was measured. The results are shown in Table 9.
【0044】[0044]
【表9】 [Table 9]
【0045】(実施例9)金属加工工場(電車車両製造
工場)から排出された、塗装前の電車車両部材の洗浄廃
水500mlに、製造例1で製造した浄化処理剤を15
0ppm添加し、実施例1と同様に処理を行い、分離し
た上澄水と原水について、水質を測定した。その結果を
表10に示した。(Example 9) 15 ml of the purification treatment agent produced in Production Example 1 was added to 500 ml of cleaning wastewater of a train vehicle member before painting discharged from a metalworking factory (train vehicle manufacturing factory).
0 ppm was added, the same treatment as in Example 1 was carried out, and the water quality of the separated supernatant water and raw water was measured. The results are shown in Table 10.
【0046】[0046]
【表10】 [Table 10]
【0047】(実施例10)住宅外壁材製造工場の外壁
材塗装ラインのブースから排出された、塗装廃水500
mlに、製造例1で製造した浄化処理剤を400ppm
添加し、実施例1と同様に処理を行い、分離した上澄水
と原水について、水質を測定した。その結果を表11に
示した。(Embodiment 10) 500 paint wastewater discharged from the booth of the exterior wall material coating line of the house exterior wall material manufacturing plant
To the ml, 400 ppm of the purification treatment agent produced in Production Example 1
Water was added and treated in the same manner as in Example 1, and the water quality of the separated supernatant water and raw water was measured. The results are shown in Table 11.
【0048】[0048]
【表11】 [Table 11]
【0049】(実施例11)ゴム加硫工場から排出され
た、廃水500mlに、製造例1で製造した浄化処理剤
を300ppm添加し、実施例1と同様に処理を行い、
分離した上澄水と原水について、水質を測定した。その
結果を表12に示した。Example 11 To 500 ml of waste water discharged from a rubber vulcanization plant, 300 ppm of the purification treatment agent produced in Production Example 1 was added, and the same treatment as in Example 1 was carried out.
The water quality of the separated supernatant water and raw water was measured. The results are shown in Table 12.
【0050】[0050]
【表12】 [Table 12]
【0051】表2〜表12の結果から明らかなように、
本発明の浄化処理剤によれば、廃水中の汚濁物質が凝
集、沈降分離され、上澄水中のBOD、COD、および
重金属などの汚濁物質の含有量を低減させるとともに、
pHを調製した。As is clear from the results of Tables 2 to 12,
According to the purification treatment agent of the present invention, pollutants in wastewater are aggregated, sedimented and separated, and the contents of pollutants such as BOD, COD, and heavy metals in the supernatant water are reduced,
The pH was adjusted.
【0052】[0052]
【発明の効果】以上のように、本発明の浄化処理剤によ
れば、汚濁廃水や汚泥中の浮遊懸濁物質(SS)を、水
のpHに関係なく凝集、沈殿させるとともに、水中のC
OD、BOD、窒素、りんなどの含有量を低減させ、ま
た有害金属やPCBなどを吸着、沈降、分離させること
ができ、しかも分離水の放流の際に、pH調整をする必
要がなく、且つ脱水し固形化した汚泥は水に溶解しにく
く、重金属などが再溶出することによる二次公害の恐れ
もない。As described above, according to the purification treatment agent of the present invention, suspended suspended matter (SS) in polluted wastewater or sludge is aggregated and precipitated regardless of the pH of the water, and C
It is possible to reduce the content of OD, BOD, nitrogen, phosphorus, etc., and to adsorb, settle, and separate harmful metals, PCB, etc., and there is no need to adjust the pH when releasing the separated water, and Sludge that has been dehydrated and solidified is difficult to dissolve in water, and there is no risk of secondary pollution due to re-elution of heavy metals and the like.
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Claims (7)
塩、アルミニウム塩および金属酸化物からなることを特
徴とする汚濁廃水および汚泥の浄化処理剤。1. A purification treatment agent for polluted wastewater and sludge, which comprises crystalline aluminosilicate, sodium salt, aluminum salt and metal oxide.
(xAl2O3ySiO 2)であることを特徴とする請求
項1に記載の汚濁廃水および汚泥の浄化処理剤。2. The crystalline aluminosilicate is a zeolite.
(XAl2O3ySiO 2) Claims characterized by
Item 1. A purification treatment agent for polluted wastewater and sludge according to Item 1.
O3)であることを特徴とする請求項1または2に記載
の汚濁廃水および汚泥の浄化処理剤。3. The sodium salt is sodium carbonate (Na 2 C
O 3 ), The purification treatment agent for polluted wastewater and sludge according to claim 1 or 2.
2(SO4)3]、塩化アルミニウム(AlCl3)および
硫酸カリウムアルミニウム[KAl2(SO 4)2]のい
ずれか1種または2種以上であることを特徴とする請求
項1乃至3のいずれか1項に記載の汚濁廃水および汚泥
の浄化処理剤。4. The aluminum salt is aluminum sulfate [Al
2(SOFour)3], Aluminum chloride (AlCl3)and
Potassium aluminum sulfate [KAl2(SO Four)2] Noi
Claims characterized in that there is only one or two or more
Item 6. The polluted wastewater and sludge according to any one of items 1 to 3.
Purification treatment agent.
化アルミニウム(Al2O3)、酸化カルシウム(Ca
O)、酸化鉄(Fe2O3)および酸化マグネシウム
(MgO)のいずれか1種または2種以上であることを
特徴とする請求項1乃至4のいずれか1項に記載の汚濁
廃水および汚泥の浄化処理剤。5. A metal oxide comprising silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), calcium oxide (Ca).
O), iron oxide (Fe 2 O 3 ) and magnesium oxide
(MgO) is any one kind or two kinds or more, and the purification treatment agent for polluted waste water and sludge according to any one of claims 1 to 4.
酸カリウムアルミニウム[KAl2(SO4)2]、炭酸
ナトリウム(Na2CO3)、二酸化珪素(SiO2)、
酸化アルミニウム(Al2O3)、酸化カルシウム(Ca
O)、酸化鉄(Fe2O3)および酸化マグネシウム(M
gO)からなることを特徴とする汚濁廃水および汚泥の
浄化処理剤。6. Zeolite (xAl 2 O 3 ySiO 2 ), potassium aluminum sulfate [KAl 2 (SO 4 ) 2 ], sodium carbonate (Na 2 CO 3 ), silicon dioxide (SiO 2 ),
Aluminum oxide (Al 2 O 3 ), calcium oxide (Ca
O), iron oxide (Fe 2 O 3 ) and magnesium oxide (M
and a purification treatment agent for polluted wastewater and sludge.
有量が15乃至45重量%、硫酸カリウムアルミニウム
[KAl2(SO4)2]の含有量が5乃至25重量%、
炭酸ナトリウム(Na2CO3)の含有量が10乃至30
重量%、二酸化珪素(SiO2)の含有量が5乃至40
%、酸化アルミニウム(Al2O3)の含有量が3乃至2
5%、酸化カルシウム(CaO)の含有量が5乃至30
%、酸化鉄(Fe2O3)の含有量が1乃至7重量%およ
び酸化マグネシウム(MgO)の含有量が1乃至5重量
%からなることを特徴とする請求項6記載の汚濁廃水お
よび汚泥の浄化処理剤。7. The content of zeolite (xAl 2 O 3 ySiO 2 ) is 15 to 45% by weight, the content of potassium aluminum sulfate [KAl 2 (SO 4 ) 2 ] is 5 to 25% by weight,
Sodium carbonate (Na 2 CO 3 ) content of 10 to 30
% By weight, content of silicon dioxide (SiO 2 ) 5 to 40
%, The content of aluminum oxide (Al 2 O 3 ) is 3 to 2
5%, the content of calcium oxide (CaO) is 5 to 30
%, Iron oxide (Fe 2 O 3 ) content is 1 to 7% by weight, and magnesium oxide (MgO) content is 1 to 5% by weight, polluted wastewater and sludge according to claim 6. Purification treatment agent.
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JP2001288072A JP2003093804A (en) | 2001-09-21 | 2001-09-21 | Purification agent for turbid wastewater and sludge |
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