JPH07108105A - Flocculant for water-bloom and flocculating setting method - Google Patents
Flocculant for water-bloom and flocculating setting methodInfo
- Publication number
- JPH07108105A JPH07108105A JP25331593A JP25331593A JPH07108105A JP H07108105 A JPH07108105 A JP H07108105A JP 25331593 A JP25331593 A JP 25331593A JP 25331593 A JP25331593 A JP 25331593A JP H07108105 A JPH07108105 A JP H07108105A
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- water
- flocculant
- equivalent value
- chloride
- inorganic
- 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.)
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、湖沼、池、貯水池等に
繁殖したアオコを効率的に凝集させる凝集剤および凝集
剤を用いてアオコを効率的、経済的に凝集沈澱させる方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aggregating agent for efficiently aggregating water-blooms that have propagated in lakes, ponds, reservoirs and the like, and a method for efficiently and economically agglomerating and depositing water-blooms.
【０００２】[0002]
【従来の技術】本発明でいう「アオコ」とは、藍藻類、
緑藻類などの藻類植物、ユーグレナなどの鞭毛類、チリ
モ属の総称で、湖沼、池、貯水池、廃水田などの水中で
あって栄養物、特にリンや窒素を含む有機物が多く含ま
れ、適当な水温になると盛んに分裂増殖する生物群であ
る。養魚池などでアオコが発生すると、水中の酸素が減
じ、またこれが魚の鰓に付着し、魚が呼吸困難をきたし
て浮上し、遂には死に至ることがある。また、公園の池
などにアオコが発生すると酸欠のため臭気を発生し、景
観を悪くする。"Aoko" in the present invention means cyanobacteria,
It is a general term for algae plants such as green algae, flagella such as euglena, and genus Chrysomycetes. Is a group of organisms that actively divide and grow. When a blue-green alga occurs in a fishpond, oxygen in the water decreases, and this attaches to the gills of the fish, causing the fish to have difficulty breathing and surfacing, eventually leading to death. In addition, when water-bloom occurs in a pond in a park, it produces an odor due to lack of oxygen, which deteriorates the scenery.
【０００３】従来から、湖沼、池等に繁殖したアオコを
除去する方法は数多く提案されている。特公昭６４−１
１３、特公平３−３７９９４では、アオコをかき寄せ水
と一緒に吸い上げ脱水している。この際に、凝集剤を用
いているが、凝集剤の内容については何も特定していな
い。Conventionally, many methods have been proposed for removing water-blooms that have propagated in lakes and ponds. Japanese Patent Publication 64-1
13 and Japanese Examined Patent Publication No. 3-37994, the blue-green alga is sucked up with water and dehydrated. At this time, a coagulant is used, but nothing is specified about the content of the coagulant.
【０００４】[0004]
【発明が解決しようとする課題】従来アオコの凝集剤と
しては、一般的にアルミナＡｌ2Ｏ3や酸化鉄Ｆｅ2Ｏ3が
用いられていると考えられるが、これらは多量の添加を
要するところに問題がある。Alumina Al 2 O 3 and iron oxide Fe 2 O 3 are generally considered to have been conventionally used as the flocculating agent for blue-green algae, but these require a large amount of addition. I have a problem.
【０００５】本発明の目的は、アオコを効果的に凝集さ
せる凝集剤およびこの凝集剤を用いた凝集沈澱方法を提
供することである。An object of the present invention is to provide an aggregating agent for effectively aggregating water-bloom and a method of aggregating and precipitating using the aggregating agent.
【０００６】[0006]
【課題を解決するための手段】本発明は、ポリ硫酸鉄、
ポリ塩化鉄、硫酸第２鉄、塩化第２鉄、塩化カルシウ
ム、塩化マグネシウム、硫酸マグネシウム、硫酸アルミ
ニウムおよびポリ塩化アルミニウムの１種または２種以
上の無機物を含むことを特徴とするアオコ凝集剤であ
る。The present invention relates to polyiron sulfate,
A water-based flocculant containing one or more inorganic substances selected from the group consisting of polyiron chloride, ferric sulfate, ferric chloride, calcium chloride, magnesium chloride, magnesium sulfate, aluminum sulfate and polyaluminum chloride. .
【０００７】また本発明は、前記無機物と、次の高分子
凝集剤（ａ）〜（ｄ）の１種または２種以上とから成る
ことを特徴とするアオコ凝集剤である。The present invention is also a blue-green flocculant comprising the above-mentioned inorganic substance and one or more of the following polymeric flocculants (a) to (d).
【０００８】（ａ）コロイド当量値が０．４〜９．０ｍ
ｅｑ／ｇであるカチオン性高分子凝集剤。(A) Colloid equivalent value is 0.4 to 9.0 m
A cationic polymer flocculant having an eq / g.
【０００９】（ｂ）コロイド当量値が−０．１〜−５．
０ｍｅｑ／ｇであるアニオン性高分子凝集剤。(B) Colloid equivalent value is -0.1 to -5.
Anionic polymer flocculant having 0 meq / g.
【００１０】（ｃ）コロイド当量値が０．０〜−２．０
ｍｅｑ／ｇであるノニオン性高分子凝集剤。(C) Colloid equivalent value is 0.0 to -2.0.
A nonionic polymer flocculant having a meq / g.
【００１１】（ｄ）コロイド当量値が−０．６〜４．５
ｍｅｑ／ｇである両性高分子凝集剤。(D) Colloid equivalent value is -0.6 to 4.5
An amphoteric polymer flocculant having a meq / g.
【００１２】また本発明は、前記カチオン性高分子凝集
剤１部に対し、前記無機物を酸化金属換算で２〜３０部
加えて充分混合し、対象水に１〜１０ｐｐｍの範囲で添
加することを特徴とするアオコの凝集沈澱方法である。The present invention further comprises adding 2 to 30 parts of the above-mentioned inorganic material in terms of metal oxide to 1 part of the above cationic polymer flocculant, mixing them well, and adding to the target water in the range of 1 to 10 ppm. It is a characteristic method for coagulating and precipitating water-bloom.
【００１３】また本発明は、前記無機物を酸化金属換算
で対象水に１〜１０ｐｐｍの範囲で添加し、同時にまた
は少し遅れて高分子凝集剤（ａ）〜（ｄ）の１種または
２種以上の混合物を前記無機物の１／２〜１／３０の範
囲で添加することを特徴とするアオコの凝集沈澱方法で
ある。In the present invention, the inorganic substance is added to the target water in the range of 1 to 10 ppm in terms of metal oxide, and at the same time or with a slight delay, one or more of the polymer flocculants (a) to (d) is added. The method of coagulating and precipitating blue-green algae is characterized in that the mixture is added in the range of 1/2 to 1/30 of the inorganic material.
【００１４】[0014]
【作用】本発明に従えば、アオコはポリ硫酸鉄、ポリ塩
化鉄、硫酸第２鉄、塩化第２鉄、塩化カルシウム、塩化
マグネシウム、硫酸マグネシウム、硫酸アルミニウムお
よびポリ塩化アルミニウムの無機凝集剤で凝集沈澱処理
ができる。アオコは、水中では帯電して水中に浮遊して
いるが、無機凝集剤は水溶性で水中で電離しているの
で、アオコの帯電電位を低下し、相互に吸着して、さら
に疎水化して凝結沈澱するものと考えられる。According to the present invention, the water-bloom flocculates with the inorganic flocculant of polyiron sulfate, polyiron chloride, ferric sulfate, ferric chloride, calcium chloride, magnesium chloride, magnesium sulfate, aluminum sulfate and polyaluminum chloride. Precipitation treatment is possible. Blue-green algae are electrically charged and float in water, but the inorganic coagulant is water-soluble and ionized in water, so the electrostatic potential of blue-green aqua is lowered, they are mutually adsorbed, and they become hydrophobic and coagulate. It is considered to precipitate.
【００１５】無機凝集剤によって凝結させられ、粗大粒
子となったアオコは、高分子凝集剤を添加すると、架橋
吸着作用によってさらに大きなフロックを形成し、凝集
すると考えられる。したがって、無機凝集剤単独では、
相当量を用いねばならないが、高分子凝集剤として併用
するとその量を１／２〜１／３に減ずることができる。It is considered that the water-bloom which is coagulated by the inorganic coagulant and becomes coarse particles aggregates by adding a polymer coagulant to form a larger floc by the cross-linking adsorption action. Therefore, with the inorganic coagulant alone,
Although a considerable amount must be used, the amount can be reduced to 1/2 to 1/3 when used in combination as a polymer flocculant.
【００１６】無機凝集剤と高分子凝集剤とを併用すると
きは、無機凝集剤の添加量は、対象水の水質によって異
なるが、対象水に対し１〜１０ｐｐｍの範囲である。１
ｐｐｍ以下では凝集効果がなく、１０ｐｐｍ以上に添加
量を増やしても効果が変わらず、凝集物の量が増えるの
で好ましくない。高分子凝集剤の添加量も対象水によっ
て変えるべきであるが、無機凝集剤の１／２〜１／３０
の範囲である。１／３０以下では添加の効果がなく、１
／２以上加えても効果が変わらない。When the inorganic coagulant and the polymer coagulant are used in combination, the addition amount of the inorganic coagulant varies depending on the water quality of the target water, but is in the range of 1 to 10 ppm with respect to the target water. 1
If it is less than ppm, there is no aggregation effect, and if the addition amount is increased to more than 10 ppm, the effect does not change, and the amount of aggregate increases, which is not preferable. The amount of the polymer flocculant added should be changed depending on the target water, but is 1/2 to 1/30 of that of the inorganic flocculant.
Is the range. If it is less than 1/30, there is no effect of addition and 1
The effect does not change even if / 2 or more is added.
【００１７】無機凝集剤と高分子凝集剤とは、各々水溶
液として予め混合して対象水に加えることが好ましい。
しかし、この場合、カチオン性高分子凝集剤以外は、無
機凝集剤水溶液と混合して溶液とならない。前記混合添
加以外の添加方法としては、無機凝集剤水溶液と、高分
子凝集剤水溶液とを同時に添加するか、先ず無機凝集剤
水溶液を添加し、その後、高分子凝集剤を添加する方法
がある。しかし、高分子凝集剤は、微細な粒子を捕らえ
てこれを凝集する能力はほとんどないので、高分子凝集
剤を単独で用いても凝集効果はなく、高分子凝集剤を先
に添加する方法は好ましくない。The inorganic coagulant and the polymer coagulant are preferably mixed in advance as an aqueous solution and added to the target water.
However, in this case, only the cationic polymer flocculant is mixed with the inorganic flocculant aqueous solution to form a solution. As an addition method other than the mixed addition, there is a method of simultaneously adding an inorganic coagulant aqueous solution and a polymer coagulant aqueous solution, or first adding an inorganic coagulant aqueous solution and then adding a polymer coagulant. However, since the polymer flocculant has almost no ability to capture fine particles and aggregate them, there is no flocculation effect even if the polymer flocculant is used alone, and the method of adding the polymer flocculant first is Not preferable.
【００１８】高分子凝集剤としては、（ａ）コロイド当
量値が０．４〜９．０ｍｅｑ／ｇであるカチオン性高分
子凝集剤、一般には第４級アンモニウム塩、（ｂ）コロ
イド当量値が−１．０〜−５．０ｍｅｑ／ｇであるアニ
オン性高分子凝集剤、一般にはカルボキシル基および有
機スルホン酸のナトリウム塩、（ｃ）コロイド当量値が
０．０〜−２．０ｍｅｑ／ｇであるノニオン性高分子凝
集剤、一般には水素結合によってアオコ表面と親和性を
有するアミド基または（ｄ）コロイド当量値が−０．６
〜４．５ｍｅｑ／ｇであるカチオン基とアニオン基を持
つ両性高分子凝集剤が単独でまたは２種以上の混合物と
して用いられる。Examples of the polymer flocculant include (a) a cationic polymer flocculant having a colloid equivalent value of 0.4 to 9.0 meq / g, generally a quaternary ammonium salt, and (b) a colloid equivalent value. Anionic polymer flocculant having a concentration of -1.0 to -5.0 meq / g, generally a sodium salt of a carboxyl group and an organic sulfonic acid, and (c) having a colloid equivalent value of 0.0 to -2.0 meq / g. A nonionic polymer flocculant, which generally has an amide group or (d) colloid equivalent value of -0.6, which has an affinity for the water-bloom surface by hydrogen bonding.
The amphoteric polymer flocculant having a cation group and an anion group of about 4.5 meq / g is used alone or as a mixture of two or more kinds.
【００１９】[0019]
【実施例】以下、実施例でもって本発明をより具体的に
説明するが、本発明はこれに限定されるものではない。The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.
【００２０】実施例１ ゴルフ場内の池からアオコで懸濁した水を採取し原水と
する。無機凝集剤として、ＬＡＳ（Ａｌ2Ｏ3として８．
０２％を含む硫酸アルミニウム水溶液）の１２．５％水
溶液を原水に対してＡｌ2Ｏ3として２ｐｐｍになるよう
に、また表１に示す三洋化成株式会社製の高分子凝集剤
を表２に示す濃度になるように原水に添加した。試験水
の性状を表２に示す。Example 1 Water suspended with water-bloom was collected from a pond in a golf course and used as raw water. As an inorganic coagulant, LAS (Al 2 O 3 as 8.
A 12.5% aqueous solution of aluminum sulfate (containing 02%) so as to be 2 ppm as Al 2 O 3 with respect to the raw water, and Table 2 shows the polymer flocculants manufactured by Sanyo Kasei Co., Ltd. shown in Table 1. It was added to the raw water so as to have a concentration. Table 2 shows the properties of the test water.
【００２１】[0021]
【表１】 [Table 1]
【００２２】また、添加の方法は次の通りである。The method of addition is as follows.
【００２３】（１）混合添加 原水を２０００ｍｌのビーカに１０００ｍｌ入れて、無
機凝集剤と高分子凝集剤を予め所定の比率で混合した液
を高速撹拌（１５０ｒｐｍ）しながら所定量添加し、添
加後１分間さらに高速撹拌を続け、その後さらに５分間
緩速撹拌（５０ｒｐｍ）し、１０分後の上澄液を試験水
とした。(1) Mixing and Adding 1000 ml of raw water was placed in a 2000 ml beaker, and a predetermined amount of a liquid in which an inorganic coagulant and a polymer coagulant were mixed in a predetermined ratio was added while high-speed stirring (150 rpm). High-speed stirring was further continued for 1 minute, then slow-speed stirring (50 rpm) for 5 minutes, and the supernatant after 10 minutes was used as test water.
【００２４】（２）同時添加 原水の量、撹拌方法等は混合添加と同じであるが、無機
凝集剤と高分子凝集剤とは、別々の試験管に所定量を調
整し、同時に添加する。(2) Simultaneous addition The amount of raw water, the stirring method, etc. are the same as those of mixed addition, but the inorganic flocculant and the polymer flocculant are adjusted in predetermined amounts in separate test tubes and added simultaneously.
【００２５】（３）逐次添加 原水の量は、混合添加と同じであるが、先ず無機凝集剤
を添加し、１分後高分子凝集剤を添加する。高速撹拌
は、無機凝集剤添加時から高分子凝集剤添加後１分間と
し、その後の操作は混合添加と同じである。(3) Sequential addition The amount of raw water is the same as that of mixed addition, but first, the inorganic coagulant is added, and 1 minute later, the polymer coagulant is added. The high-speed stirring is from the time of adding the inorganic coagulant to 1 minute after the addition of the polymer coagulant, and the operation thereafter is the same as the mixing and addition.
【００２６】比較例１ 原水、無機凝集剤、高分子凝集剤はおよび添加方法は、
実施例１と同じであるが、無機凝集剤または高分子凝集
剤単独に添加したものおよびこれらを本発明の範囲外の
割合で混合したものである。試験水の性状を表２に示
す。Comparative Example 1 Raw water, an inorganic coagulant, a polymer coagulant, and the addition method were as follows:
The same as in Example 1, except that the inorganic coagulant or the polymer coagulant was added alone, or these were mixed in a ratio outside the range of the present invention. Table 2 shows the properties of the test water.
【００２７】[0027]
【表２】 [Table 2]
【００２８】試験方法は、ＪＩＳＫ０１０１によった。The test method was according to JIS K0101.
【００２９】実施例２ 無機凝集剤としてＰＡＣ（Ａｌ2Ｏ3として１０．００％
を含むポリ塩化アルミニウム水溶液）の１０％水溶液を
用いた他は実施例１と同じである。試験水の性状を表３
に示す。Example 2 PAC as an inorganic coagulant (10.00% as Al 2 O 3
The same as Example 1 except that a 10% aqueous solution of polyaluminum chloride containing) was used. Table 3 shows the properties of test water
Shown in.
【００３０】比較例２ 無機凝集剤として実施例２と同じものを使った他は比較
例２と同じである。試験水の性状を表３に示す。Comparative Example 2 The same as Comparative Example 2 except that the same inorganic flocculant as in Example 2 was used. Table 3 shows the properties of the test water.
【００３１】[0031]
【表３】 [Table 3]
【００３２】以上の結果から、無機凝集剤は単独でも効
果があるが、高分子凝集剤と併用することによって、無
機凝集剤を大幅に減少できる。これによって、凝集物の
量も減少でき、ＰＨを大きく変えることもない。なお、
高分子凝集剤のみ、またはその量が無機凝集剤の１／３
０以下では効果がないことが判った。From the above results, although the inorganic coagulant alone is effective, the combined use with the polymer coagulant can significantly reduce the inorganic coagulant. As a result, the amount of agglomerates can be reduced, and PH is not significantly changed. In addition,
Polymer coagulant only or its amount is 1/3 of inorganic coagulant
It was found that no effect was obtained at 0 or less.
【００３３】また無機凝集剤として、水溶性の第２鉄化
合物、カルシウム、マグネシウムの塩化物や硫酸塩も同
様の効果がある。As the inorganic coagulant, water-soluble ferric compounds, chlorides of calcium and magnesium, and sulfates also have similar effects.
【００３４】[0034]
【発明の効果】以上のように本発明によれば、アルミニ
ウムや第２鉄塩などの水溶性塩を含む無機凝集剤と高分
子凝集剤とを併用することによって、アオコに対する顕
著な凝集効果が得られることが判る。また、凝集効果が
非常に大きいため、フロックの嵩も少なくなり、その処
理装置も小型となって凝集剤の費用を含めた経費を節減
できる。As described above, according to the present invention, by using the inorganic flocculant containing a water-soluble salt such as aluminum or ferric salt in combination with the polymer flocculant, a remarkable flocculating effect on blue-green algae can be obtained. It turns out that it can be obtained. In addition, since the flocculation effect is very large, the bulk of flocs is also reduced, and the processing apparatus is downsized, so that the cost including the cost of the flocculant can be reduced.
Claims (4)
塩化第２鉄、塩化カルシウム、塩化マグネシウム、硫酸
マグネシウム、硫酸アルミニウムおよびポリ塩化アルミ
ニウムの１種または２種以上の無機物を含むことを特徴
とするアオコ凝集剤。1. Polyiron sulfate, polyiron chloride, ferric sulfate,
An algal flocculant containing one or more inorganic substances selected from ferric chloride, calcium chloride, magnesium chloride, magnesium sulfate, aluminum sulfate and polyaluminum chloride.
〜（ｄ）の１種または２種以上とから成ることを特徴と
するアオコ凝集剤。 （ａ）コロイド当量値が０．４〜９．０ｍｅｑ／ｇであ
るカチオン性高分子凝集剤。 （ｂ）コロイド当量値が−０．１〜−５．０ｍｅｑ／ｇ
であるアニオン性高分子凝集剤。 （ｃ）コロイド当量値が０．０〜−２．０ｍｅｑ／ｇで
あるノニオン性高分子凝集剤。 （ｄ）コロイド当量値が−０．６〜４．５ｍｅｑ／ｇで
ある両性高分子凝集剤。2. The inorganic substance and the following polymer flocculant (a)
To (d), one kind or two or more kinds. (A) A cationic polymer flocculant having a colloid equivalent value of 0.4 to 9.0 meq / g. (B) Colloid equivalent value is -0.1 to -5.0 meq / g
Is an anionic polymer flocculant. (C) A nonionic polymer flocculant having a colloid equivalent value of 0.0 to -2.0 meq / g. (D) An amphoteric polymer flocculant having a colloid equivalent value of -0.6 to 4.5 meq / g.
し、前記無機物を酸化金属換算で２〜３０部加えて充分
混合し、対象水に１〜１０ｐｐｍの範囲で添加すること
を特徴とするアオコの凝集沈澱方法。3. The inorganic polymer is added in an amount of 2 to 30 parts in terms of metal oxide to 1 part of the cationic polymer flocculant, and they are mixed well and added to the target water in the range of 1 to 10 ppm. Algae flocculation and precipitation method.
〜１０ｐｐｍの範囲で添加し、同時にまたは少し遅れて
高分子凝集剤（ａ）〜（ｄ）の１種または２種以上の混
合物を前記無機物の１／２〜１／３０の範囲で添加する
ことを特徴とするアオコの凝集沈澱方法。4. The target water containing the inorganic substance in terms of metal oxide
10 to 10 ppm, and at the same time or with a slight delay, one or a mixture of two or more polymer flocculants (a) to (d) is added in the range of 1/2 to 1/30 of the inorganic material. A method for coagulating and precipitating water-bloom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25331593A JPH07108105A (en) | 1993-10-08 | 1993-10-08 | Flocculant for water-bloom and flocculating setting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25331593A JPH07108105A (en) | 1993-10-08 | 1993-10-08 | Flocculant for water-bloom and flocculating setting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07108105A true JPH07108105A (en) | 1995-04-25 |
Family
ID=17249594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25331593A Pending JPH07108105A (en) | 1993-10-08 | 1993-10-08 | Flocculant for water-bloom and flocculating setting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07108105A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020037815A (en) * | 2000-11-15 | 2002-05-23 | 신현준 | The floating separation method of contaminant from waste water by adding chemicals |
| CN105060438A (en) * | 2015-08-18 | 2015-11-18 | 孙全方 | Efficient low-heavy metal liquid poly aluminum ferrous chloride composite coagulant and production method thereof |
| CN107827216A (en) * | 2017-11-10 | 2018-03-23 | 郭栓海 | One kind printing and dyeing slurry waste water treating agent, preparation method and applications |
| CN108059278A (en) * | 2017-12-26 | 2018-05-22 | 重庆丰望环保科技有限公司 | A kind of papermaking wastewater air-flotation process system and coagulant |
-
1993
- 1993-10-08 JP JP25331593A patent/JPH07108105A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020037815A (en) * | 2000-11-15 | 2002-05-23 | 신현준 | The floating separation method of contaminant from waste water by adding chemicals |
| CN105060438A (en) * | 2015-08-18 | 2015-11-18 | 孙全方 | Efficient low-heavy metal liquid poly aluminum ferrous chloride composite coagulant and production method thereof |
| CN107827216A (en) * | 2017-11-10 | 2018-03-23 | 郭栓海 | One kind printing and dyeing slurry waste water treating agent, preparation method and applications |
| CN108059278A (en) * | 2017-12-26 | 2018-05-22 | 重庆丰望环保科技有限公司 | A kind of papermaking wastewater air-flotation process system and coagulant |
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