JP6320662B2 - Water purification agent, water purification agent production method, and water purification method - Google Patents
Water purification agent, water purification agent production method, and water purification method Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 177
- 238000000746 purification Methods 0.000 title claims description 100
- 239000003795 chemical substances by application Substances 0.000 title claims description 62
- 238000000034 method Methods 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 230000005484 gravity Effects 0.000 claims description 80
- 241000196324 Embryophyta Species 0.000 claims description 79
- 229920000642 polymer Polymers 0.000 claims description 68
- 239000000843 powder Substances 0.000 claims description 68
- 239000002351 wastewater Substances 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 23
- 239000012629 purifying agent Substances 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 16
- 239000006185 dispersion Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 10
- 229920002401 polyacrylamide Polymers 0.000 claims description 7
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000004898 kneading Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 244000025254 Cannabis sativa Species 0.000 claims 3
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims 3
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims 3
- 235000009120 camo Nutrition 0.000 claims 3
- 235000005607 chanvre indien Nutrition 0.000 claims 3
- 239000011487 hemp Substances 0.000 claims 3
- 239000000047 product Substances 0.000 description 28
- 230000000052 comparative effect Effects 0.000 description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000008187 granular material Substances 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 238000004090 dissolution Methods 0.000 description 5
- 239000010842 industrial wastewater Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 238000011002 quantification Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001453 nickel ion Inorganic materials 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- 235000007294 Brassica nipposinica Nutrition 0.000 description 1
- 241000342995 Brassica rapa subsp. nipposinica Species 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 235000007516 Chrysanthemum Nutrition 0.000 description 1
- 240000005250 Chrysanthemum indicum Species 0.000 description 1
- 235000004035 Cryptotaenia japonica Nutrition 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 235000009337 Spinacia oleracea Nutrition 0.000 description 1
- 244000300264 Spinacia oleracea Species 0.000 description 1
- 102000007641 Trefoil Factors Human genes 0.000 description 1
- 235000015724 Trifolium pratense Nutrition 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 229920003123 carboxymethyl cellulose sodium Polymers 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 235000021384 green leafy vegetables Nutrition 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Description
本発明は、工業排水などの水の浄化に使用する、植物由来の水浄化剤、及び該水浄化剤を用いた水浄化方法に関する。 The present invention relates to a plant-derived water purification agent used for purification of water such as industrial wastewater, and a water purification method using the water purification agent.
植物由来の水浄化剤を用いることにより、工業排水から不要物質を除去し、水を浄化する研究が各種行われている。
例えば、モロヘイヤ、この乾燥物、及びこの抽出物の少なくともいずれかと、高分子凝集剤とを含有する凝集剤を懸濁液に添加し、微粒子を凝集分離させる方法が提案されている（例えば、特許文献１参照）。
また、無機系工業排水から、重金属イオンの除去を目的として、例えば、排水中の重金属イオンを、モロヘイヤなどの葉菜や高分子凝集剤を用い、固液分離させたり、陽イオン交換体に吸着させることにより、排水から分離除去する方法が提案されている（例えば、特許文献２、及び３参照）。
Various studies have been conducted to remove unnecessary substances from industrial wastewater and purify water by using plant-derived water purifiers.
For example, a method has been proposed in which a flocculant containing at least one of Morohaya, this dried product, and this extract, and a polymer flocculant is added to a suspension to agglomerate and separate fine particles (for example, patents). Reference 1).
In addition, for the purpose of removing heavy metal ions from inorganic industrial wastewater, for example, heavy metal ions in wastewater are separated into solid and liquid using leaf vegetables such as moroheiya and polymer flocculants, or adsorbed on cation exchangers. Thus, a method of separating and removing from waste water has been proposed (see, for example, Patent Documents 2 and 3).
ところで、浄化したい排水の量が多い、排水に含まれる不要物質の量が多い、あるいは排水に含まれる不要物質の種類が多いほど、これら排水の浄化処理に必要な浄化剤を自動で投入するシステムの構築が望まれる。
高速で安定した浄化処理を行ううえで、装置の自動化は重要な課題である。
一方で、装置の低コスト化の要求もある。
By the way, as the amount of wastewater to be purified increases, the amount of unnecessary substances contained in the wastewater increases, or the more types of unnecessary substances contained in the wastewater, the more automatically the purifier necessary for the purification treatment of these wastewaters is introduced. Construction of is desired.
The automation of the apparatus is an important issue in performing high-speed and stable purification treatment.
On the other hand, there is a demand for cost reduction of the apparatus.
しかし、従来提案されている技術は、排水を浄化処理する自動化装置は全く意図しておらず、自動化装置に供しようとすると、所望の性能の水浄化剤を安定して、かつ繰り返し精度よく供給することができなかった。 However, the technology proposed in the past is not intended to be an automated device for purifying wastewater, and if it is intended to be used in an automated device, a water purifier having a desired performance is stably and repeatedly supplied with high accuracy. I couldn't.
そこで、低コストで、さらに所望の性能の水浄化剤を安定して、かつ繰り返し精度よく供給することができる自動化浄化装置に、好適に使用し得る水浄化剤が求められている。 Therefore, there is a demand for a water purifying agent that can be suitably used for an automated purifying apparatus that can stably and repeatedly supply a water purifying agent with desired performance at low cost.
本発明は、従来における前記諸問題を解決し、以下の目的を達成することを課題とする。即ち、本発明は、植物由来の水浄化剤を用いた排水の浄化処理を、自動化浄化装置を用いて行う際、低コストで、さらに所望の性能の水浄化剤を安定して、かつ繰り返し精度よく供給することができる自動化浄化装置に、好適に使用し得る水浄化剤、及び該水浄化剤を用いた水浄化方法を提供することを目的とする。 An object of the present invention is to solve the above-described problems and achieve the following objects. That is, the present invention provides a water purification agent having a desired performance at a low cost and with a stable and repeatable accuracy when wastewater purification using a plant-derived water purification agent is performed using an automated purification device. It is an object of the present invention to provide a water purification agent that can be suitably used for an automated purification device that can be supplied well, and a water purification method using the water purification agent.
前記課題を解決するための手段としては、以下の通りである。即ち、
＜１＞ 植物粉末と高分子凝集剤との混合物を含む造粒物であることを特徴とする水浄化剤である。
＜２＞ 植物が、長朔黄麻、及びモロヘイヤの少なくともいずれかである前記＜１＞に記載の水浄化剤である。
＜３＞ 高分子凝集剤が、ポリアクリルアミドである前記＜１＞から＜２＞のいずれかに記載の水浄化剤である。
＜４＞ 水浄化剤の嵩比重が、０．４ｇ／ｃｍ３以上である前記＜１＞から＜３＞のいずれかに記載の水浄化剤である。
＜５＞ 水浄化剤の嵩比重のばらつき（嵩比重の最小値に対する、嵩比重の最大値と最小値との差の割合）が、４．５％以下である前記＜４＞に記載の水浄化剤である。
＜６＞ 水浄化剤における植物粉末と高分子凝集剤との含有量比が、質量比（植物粉末／高分子凝集剤）で、１／１〜９／１である前記＜１＞から＜５＞のいずれかに記載の水浄化剤である。
＜７＞ 水浄化剤が、乾燥植物を粉砕し、数平均粒径が２５０μｍ以下の植物粉末を得る植物粉末製造工程と、前記植物粉末と高分子凝集剤とを混合し、水分を加えて混練し、押出造粒により造粒物を得る造粒工程とを含む製造方法により製造される、前記＜１＞から＜６＞のいずれかに記載の水浄化剤である。
＜８＞ 前記＜１＞から＜７＞のいずれかに記載の水浄化剤を水に溶かし、植物粉末及び高分子凝集剤の分散液を得、該分散液を排水に供することにより排水中の無機系不要物を除去することを特徴とする水浄化方法である。
Means for solving the problems are as follows. That is,
<1> A water purifier characterized by being a granulated product containing a mixture of plant powder and a polymer flocculant.
<2> The water purifier according to <1>, wherein the plant is at least one of Nagatoro burlap and Morohea.
<3> The water purifier according to any one of <1> to <2>, wherein the polymer flocculant is polyacrylamide.
<4> The water purification agent according to any one of <1> to <3>, wherein the bulk specific gravity of the water purification agent is 0.4 g / cm 3 or more.
<5> The water according to <4>, wherein the variation of the bulk specific gravity of the water purifier (the ratio of the difference between the maximum value and the minimum value of the bulk specific gravity with respect to the minimum value of the bulk specific gravity) is 4.5% or less. It is a cleaning agent.
<6> The content ratio of the plant powder and the polymer flocculant in the water purification agent is 1/1 to 9/1 in terms of mass ratio (plant powder / polymer flocculant). > The water purifier according to any one of the above.
<7> A water purification agent pulverizes a dried plant to obtain a plant powder having a number average particle size of 250 μm or less, and the plant powder and the polymer flocculant are mixed, and water is added to knead. And a water purification agent according to any one of <1> to <6>, which is produced by a production method including a granulation step of obtaining a granulated product by extrusion granulation.
<8> The water purifier according to any one of <1> to <7> is dissolved in water to obtain a dispersion of plant powder and a polymer flocculant, and the dispersion is used for drainage. It is a water purification method characterized by removing inorganic unnecessary substances.
本発明によれば、従来における前記諸問題を解決し、前記目的を達成することができ、植物由来の水浄化剤を用いた排水の浄化処理を、自動化浄化装置を用いて行う際、低コストで、さらに所望の性能の水浄化剤を安定して、かつ繰り返し精度よく供給することができる自動化浄化装置に、好適に使用し得る水浄化剤、及び該水浄化剤を用いた水浄化方法を提供することができる。 According to the present invention, the above-mentioned problems can be solved and the above-mentioned object can be achieved, and when the wastewater purification treatment using a plant-derived water purification agent is performed using an automated purification device, the cost is low. In addition, a water purification agent that can be suitably used in an automated purification apparatus that can stably and repeatedly supply a water purification agent having a desired performance, and a water purification method using the water purification agent. Can be provided.
（水浄化剤）
本発明の水浄化剤は、植物粉末と高分子凝集剤との混合物を含む造粒物からなる。
本発明で「水の浄化」とは、工業排水、特に無機系工業排水を対象とし、その排水中のニッケル、銅、フッ素などの不要物を除去することをいう。
前記水浄化剤を前記排水に加えると、排水中の無機系不要物は該水浄化剤により凝集分離される。係る凝集物を排水中から取り除くと、排水は浄化される。
(Water purification agent)
The water purification agent of the present invention comprises a granulated product containing a mixture of plant powder and a polymer flocculant.
In the present invention, “purification of water” refers to removing industrial wastewater, particularly inorganic industrial wastewater, and removing unnecessary substances such as nickel, copper, and fluorine in the wastewater.
When the water purification agent is added to the wastewater, inorganic unnecessary substances in the wastewater are agglomerated and separated by the water purification agent. When such agglomerates are removed from the wastewater, the wastewater is purified.
＜植物＞
前記植物としては、排水中の不要物（ニッケル、銅、フッ素など）を凝集分離することができる植物であれば、特に制限はなく、例えば、長朔黄麻（チョウサクコウマ）、モロヘイヤ、小松菜、三つ葉、水菜、ほうれん草などを挙げることができる。これらの中でも、長朔黄麻（チョウサクコウマ）、及びモロヘイヤが好ましく、以下に記載する実施例で良好な結果を示した、長朔黄麻がより好ましく使用できる。
<Plant>
The plant is not particularly limited as long as it can agglomerate and separate unnecessary materials (nickel, copper, fluorine, etc.) in the wastewater. For example, Nagase Hemp, Morohaya, Komatsuna, Examples include trefoil, mizuna and spinach. Among these, long-bellied burlap (Chrysanthemum) and Moroheiya are preferable, and long-bellied burlap, which showed good results in the examples described below, can be used more preferably.
また、植物の部位としては、葉、茎、根のいずれの部分であっても使用できるが、葉がより好ましく使用できる。 Moreover, as a part of a plant, any part of a leaf, a stem and a root can be used, but a leaf can be used more preferably.
＜高分子凝集剤＞
前記高分子凝集剤としては、上記植物と同様、排水中の不要物（ニッケル、銅、フッ素など）を除去する効果を示すものであれば、特に制限はなく、例えば、ポリアクリルアミド、ポリアクリルアミドの部分加水分解塩、アルギン酸ナトリウム、ポリアクリル酸ナトリウム、ＣＭＣ（カルボキシメチルセルロース）ナトリウム塩などを挙げることができる。これらの中でも、ポリアクリルアミドが好ましく使用できる。該ポリアクリルアミドとしては、例えば、市販されているＦｌｏｐａｎ ＡＮ ９０５、Ｆｌｏｐａｎ ＡＮ ９２６、Ｆｌｏｐａｎ ＡＮ ９５６（株式会社エス・エヌ・エフ製）などを用いることができる。
<Polymer flocculant>
The polymer flocculant is not particularly limited as long as it exhibits an effect of removing unnecessary substances (nickel, copper, fluorine, etc.) in the waste water, as in the case of the above-mentioned plant. For example, polyacrylamide, polyacrylamide Partially hydrolyzed salts, sodium alginate, sodium polyacrylate, CMC (carboxymethylcellulose) sodium salt and the like can be mentioned. Among these, polyacrylamide can be preferably used. As the polyacrylamide, for example, commercially available Flopan AN 905, Flopan AN 926, Flopan AN 956 (manufactured by SNF Corporation) and the like can be used.
＜植物粉末と高分子凝集剤との混合物の造粒物＞
前記水浄化剤として、植物粉末と高分子凝集剤との混合物を含む造粒物を用いると、自動化浄化装置において、所望の性能の水浄化剤を安定して、かつ繰り返し精度よく供給することができる。
<Granulated product of mixture of plant powder and polymer flocculant>
When a granulated product containing a mixture of a plant powder and a polymer flocculant is used as the water purification agent, a water purification agent having a desired performance can be stably and repeatedly supplied in an automated purification device. it can.
本発明者らは、植物粉末からなる水浄化剤を用いた排水の浄化装置における自動化システムを研究していたところ、植物粉末と高分子凝集剤とからなる水浄化剤を用いると以下の問題が生じることがわかった。 The present inventors have studied an automated system in a wastewater purification apparatus using a water purification agent made of plant powder. When a water purification agent made of plant powder and a polymer flocculant is used, the following problems occur. I found it to happen.
自動化システムにおいては、排水の浄化処理に使用する各種水浄化剤は、自動供給機に貯めておかれ、その後、定量器で定量され、所定量の水浄化剤が、反応槽中の排水に供される。ここで、水浄化剤が固形であると、反応槽へ送られる前に一旦溶解槽で溶解され、その後反応槽へ送られるという手順を踏む。つまり、自動供給機にある固形の水浄化剤は、定量器で定量され、溶解槽に投入され、そこで所定量の水と撹拌溶解させられた後、係る分散液は反応槽に送られ、排水に供される。
ところで、コスト面等の理由から、装置はできるだけコンパクトな方が好ましく、使用する自動供給機の数は少ない方が好ましい。
一方、水浄化性能を向上させるには、植物からなる水浄化剤と高分子凝集剤からなる水浄化剤の両方を使用することが好ましい。
In an automated system, various water purification agents used for wastewater purification treatment are stored in an automatic feeder, then quantified by a quantifier, and a predetermined amount of water purification agent is supplied to the wastewater in the reaction tank. Is done. Here, if the water purification agent is solid, it is once dissolved in the dissolution tank before being sent to the reaction tank, and then sent to the reaction tank. In other words, the solid water purifier in the automatic feeder is quantified by a quantifier and charged into a dissolution tank, where it is stirred and dissolved with a predetermined amount of water, and then the dispersion is sent to the reaction tank and drained. To be served.
By the way, for reasons such as cost, the apparatus is preferably as compact as possible, and it is preferable that the number of automatic feeders used is small.
On the other hand, in order to improve water purification performance, it is preferable to use both a water purification agent comprising a plant and a water purification agent comprising a polymer flocculant.
そこで、一つの自動供給機に、植物粉末と高分子凝集剤の両方の水浄化剤を入れ、自動化装置に供しようとしたところ、植物粉末と高分子凝集剤の比重があまりにも違う（特に嵩比重が大きく異なる）ため、自動供給機内で両者の分離が起き、所望の配合割合の水浄化剤を量り取ることができないことがわかった。所望の配合割合でないと、満足のいく水浄化効果を得られないことがあり、係る水浄化剤は、性能のよい水浄化剤とはいえない。
また、２種類の水浄化剤が分離した中で、定量を繰り返し行っても、得られる水浄化剤は、毎回配合割合の異なった水浄化性能にムラのあるものとなり、所望の配合割合の水浄化剤を繰り返し精度よく量り取ることができない。
さらにまた、植物粉末は、特に嵩比重の値が小さいために、このような嵩比重の値が小さい植物粉末を含んだ水浄化剤を自動供給機において定量しようとすると、一定質量になるまで定量器に水浄化剤を投入する必要があることから、定量に時間及び電力がかかる。自動供給機で嵩比重の値が低い水浄化剤を量り取るには、デメリットが多い。
Therefore, when water purifiers of both plant powder and polymer flocculant were put into one automatic feeder and used for an automated device, the specific gravity of plant powder and polymer flocculant was too different (particularly bulky). Therefore, it was found that separation of the two occurred in the automatic feeder and the water purification agent having a desired blending ratio could not be measured. If it is not a desired blending ratio, a satisfactory water purification effect may not be obtained, and such a water purification agent cannot be said to be a water purification agent with good performance.
Moreover, even if the determination is repeated while the two types of water purifying agents are separated, the obtained water purifying agent has uneven water purification performance with different blending ratios each time, and water with a desired blending ratio is obtained. The cleaning agent cannot be repeatedly weighed with high accuracy.
Furthermore, since the plant powder has a particularly low bulk specific gravity value, when an attempt is made to quantify the water purifier containing the plant powder having such a small bulk specific gravity value in an automatic feeder, it is quantified to a constant mass. Since it is necessary to put a water purifier into the vessel, it takes time and electric power for quantification. There are many demerits in measuring a water purifier having a low bulk specific gravity with an automatic feeder.
本発明者らは、上記問題に対し、種々の実験を行った結果、水を浄化する自動化浄化装置に好適に使用し得る水浄化剤の態様を見出した。
つまり、植物粉末と高分子凝集剤との混合物を含む造粒物からなる水浄化剤が、上記問題を解決できることを見出した。
As a result of conducting various experiments on the above problem, the present inventors have found an aspect of a water purifying agent that can be suitably used in an automated purifying apparatus that purifies water.
That is, the present inventors have found that a water purification agent comprising a granulated product containing a mixture of plant powder and a polymer flocculant can solve the above problem.
本発明の水浄化剤は、造粒物であることから流動性がよく、自動供給機や定量器などにおいて、つまりを生じることはなく、定量した水浄化剤を溶解槽へ安定供給することができる。
また、本発明の水浄化剤は、植物粉末と高分子凝集剤とを所望の割合で造粒していることから、期待通りの水浄化効果が得られる。
さらにまた、植物粉末と高分子凝集剤との混合物を造粒したことにより、本発明の水浄化剤は、嵩比重の値がある程度高い値を示しており、嵩比重の値のバラツキが少ないものとなっている。
水浄化剤の嵩比重の値のバラツキが少ないことで、定量を繰り返し行っても、毎回配合割合のブレが少ない、水浄化性能にムラのない水浄化剤を得ることができる。
本発明の水浄化剤を、自動化浄化装置に使用すると、植物粉末と高分子凝集剤の比重差から生じる問題を解決することができ、植物粉末と高分子凝集剤とが所望の配合割合で含有された水浄化剤を、繰り返し精度よく量り取ることができる。
また、本発明の水浄化剤の嵩比重の値は、植物粉末と高分子凝集剤とを単純に混合しただけの水浄化剤の嵩比重の値と比べるとかなり高い値を示しており（後述する実施例において、比較例１〜３と比較した実施例１〜３の結果より、そのことが示されている）、これにより定量にかかる時間と電力が抑えることから、自動化浄化装置への適用が有効に図られる。
Since the water purification agent of the present invention is a granulated product, it has good fluidity and does not cause clogging in an automatic feeder or a quantifier, and can stably supply the quantified water purification agent to the dissolution tank. it can.
In addition, since the water purification agent of the present invention granulates the plant powder and the polymer flocculant at a desired ratio, the water purification effect as expected can be obtained.
Furthermore, since the mixture of the plant powder and the polymer flocculant is granulated, the water purification agent of the present invention has a high value of the bulk specific gravity to a certain extent, and there is little variation in the value of the bulk specific gravity. It has become.
Since there is little variation in the value of the bulk specific gravity of the water purification agent, a water purification agent with little unevenness in the water purification performance can be obtained even when the determination is repeated.
When the water purification agent of the present invention is used in an automated purification device, it is possible to solve the problem caused by the difference in specific gravity between the plant powder and the polymer flocculant, and the plant powder and the polymer flocculant are contained in a desired blending ratio. The water purification agent thus obtained can be repeatedly weighed with high accuracy.
Further, the value of the bulk specific gravity of the water purifying agent of the present invention is considerably higher than the value of the bulk specific gravity of the water purifying agent obtained by simply mixing the plant powder and the polymer flocculant (described later). This is shown by the results of Examples 1 to 3 compared with Comparative Examples 1 to 3), which reduces the time and power required for quantification, and is therefore applicable to an automated purification device. Is effectively planned.
前記水浄化剤における前記植物粉末と前記高分子凝集剤との含有量比は、質量比（植物粉末／高分子凝集剤）で、１／１〜９／１であることが好ましい。
水浄化性能を満足するためには、前記水浄化剤における前記植物粉末の含有量比は、質量比（植物粉末／高分子凝集剤）で、１／１以上であることが好ましい。また、水浄化剤の嵩比重の値をある程度高くするためには、前記水浄化剤における前記高分子凝集剤の含有量比は、質量比（植物粉末／高分子凝集剤）で、９／１以上であることが好ましい。
前記水浄化剤における前記植物粉末と前記高分子凝集剤との含有量比が上記範囲にあると、水浄化性能もよく、嵩比重の値も高く、嵩比重の値のバラツキも少ない良好な結果を示す水浄化剤となる。
The content ratio of the plant powder and the polymer flocculant in the water purification agent is preferably a mass ratio (plant powder / polymer flocculant) of 1/1 to 9/1.
In order to satisfy water purification performance, the content ratio of the plant powder in the water purification agent is preferably 1/1 or more in terms of mass ratio (plant powder / polymer flocculant). In order to increase the bulk specific gravity value of the water purification agent to some extent, the content ratio of the polymer flocculant in the water purification agent is 9/1 as a mass ratio (plant powder / polymer flocculant). The above is preferable.
When the content ratio of the plant powder and the polymer flocculant in the water purification agent is in the above range, the water purification performance is good, the bulk specific gravity value is high, and the bulk specific gravity value variation is small. It becomes the water purifier which shows.
前記造粒物の形態（直径、長さ）としては、特に制限はなく、後述する製造方法との関係で適宜選択することができるが、市販の定量器の供給口のサイズに広く適合させるには、造粒物の直径は３ｍｍ以下、長さは３ｍｍ以下が好ましい。また、供給口の通りをスムーズにし、溶解時の溶解性も考慮するなら、造粒物の直径は１ｍｍ以下、長さは１ｍｍ以下がより好ましい。 There is no restriction | limiting in particular as a form (diameter, length) of the said granulated material, Although it can select suitably in relation to the manufacturing method mentioned later, In order to adapt widely to the size of the supply port of a commercially available meter. Is preferably 3 mm or less in diameter and 3 mm or less in length. In addition, if the supply port is made smooth and the solubility during dissolution is taken into consideration, the diameter of the granulated product is more preferably 1 mm or less and the length is preferably 1 mm or less.
＜＜水浄化剤の特性＞＞
前記水浄化剤の嵩比重は、０．４ｇ／ｃｍ３以上が好ましい。
本発明の対象とする自動化システムにおいては、水浄化剤の嵩比重が、０．４ｇ／ｃｍ３以上であると、定量にかかる時間と電力を抑えることができ、自動化浄化装置への適用を有効に図ることができる。
ここで、嵩比重は以下のように求めることができる。
<< Characteristics of water purification agent >>
The bulk specific gravity of the water purifier is preferably 0.4 g / cm 3 or more.
In the automated system targeted by the present invention, when the bulk specific gravity of the water purifier is 0.4 g / cm 3 or more, the time and power required for quantification can be suppressed, and the application to the automated purifier is effective. Can be aimed at.
Here, the bulk specific gravity can be determined as follows.
［嵩比重］
嵩比重は、パウダーテスターＰＴ−Ｎ型（ホソカワミクロン社製）を用い測定することができる。
１００ｃｃのステンレスカップに１００ｃｃの試料を静かに入れ、その時の試料の比重を測定し、嵩比重とする。
[Bulk specific gravity]
The bulk specific gravity can be measured using a powder tester PT-N type (manufactured by Hosokawa Micron).
Gently place a 100 cc sample in a 100 cc stainless steel cup, measure the specific gravity of the sample at that time, and obtain the bulk specific gravity.
前記水浄化剤の嵩比重のばらつき（嵩比重の最小値に対する、嵩比重の最大値と最小値との差の割合）は、４．５％以下であるとよい。
本発明の対象とする自動化システムにおいては、水浄化剤の嵩比重のばらつきが、４．５％以下であると、配合割合のブレが少ない、水浄化性能にムラのない水浄化剤を、繰り返し精度よく供給することができ、自動化浄化装置への適用を有効に図ることができる。
ここで、嵩比重のばらつきは以下のように求めることができる。
The variation of the bulk specific gravity of the water purifier (the ratio of the difference between the maximum value and the minimum value of the bulk specific gravity with respect to the minimum value of the bulk specific gravity) is preferably 4.5% or less.
In the automation system that is the subject of the present invention, when the variation in the bulk specific gravity of the water purifier is 4.5% or less, the water purifier having no unevenness in the water purifying performance with less variation in the blending ratio is repeated. It can be supplied with high accuracy and can be effectively applied to an automated purification apparatus.
Here, the variation in the bulk specific gravity can be obtained as follows.
［嵩比重のばらつき］
測定試料である水浄化剤を、一定の大きさの袋（例えば、７００ｍｍ×５００ｍｍのポリ袋）に入れ、袋の口を熱封止する。その際、次の振動操作において、該水浄化剤が自由に動ける程度の空間が確保されているように袋に入れる水浄化剤の量を考慮する。次に、造粒物が崩れない程度に、袋に入れた水浄化剤を上下に振動させ、その後、該袋の上下部分を含む５点から試料を取り出し、それぞれの嵩比重を測定する。
嵩比重の最大値と最小値を記録し、その最大値と最小値をもとに以下の計算によりばらつきを求める。
（嵩比重の最大値と最小値の差／嵩比重の最小値）×１００
[Variation of bulk specific gravity]
A water purification agent as a measurement sample is put into a bag of a certain size (for example, a 700 mm × 500 mm plastic bag), and the mouth of the bag is heat sealed. At that time, in the next vibration operation, the amount of the water purifying agent to be put in the bag is taken into consideration so as to secure a space where the water purifying agent can freely move. Next, the water purifier contained in the bag is vibrated up and down to such an extent that the granulated material does not collapse, and then samples are taken out from five points including the upper and lower portions of the bag, and the bulk specific gravity is measured.
The maximum and minimum values of bulk specific gravity are recorded, and the variation is obtained by the following calculation based on the maximum and minimum values.
(Difference between maximum and minimum bulk specific gravity / minimum bulk specific gravity) x 100
＜＜造粒物の製造方法＞＞
前記水浄化剤は、乾燥植物を粉砕し、数平均粒径が２５０μｍ以下の植物粉末を得る植物粉末製造工程と、前記植物粉末に高分子凝集剤を混合し、水分を加えて混練し、押出造粒により造粒物を得る造粒工程とを含む製造方法により製造される。
<< Method for producing granulated product >>
The water purification agent is a plant powder production process for pulverizing a dried plant to obtain a plant powder having a number average particle size of 250 μm or less, mixing a polymer flocculant with the plant powder, adding water, kneading, and extruding. It is manufactured by a manufacturing method including a granulation step of obtaining a granulated product by granulation.
植物粉末を得るには、まず植物を天日乾燥、又は乾燥機による乾燥により、水分量が５％以下となるまで乾燥させるとよい。次に乾燥した植物を、例えば、アトマイザー（ハンマーミル、ダルトン社製）を用いて、数平均粒径が２５０μｍ以下になるように粉砕する。
ここで、数平均粒径は、例えば、Ｍｏｒｐｈｏｌｏｇｉ Ｇ３（マルバーン社製）を用いて測定することができる。
In order to obtain a plant powder, it is preferable to first dry the plant by sun drying or drying with a dryer until the water content is 5% or less. Next, the dried plant is pulverized using, for example, an atomizer (hammer mill, manufactured by Dalton) so that the number average particle diameter is 250 μm or less.
Here, the number average particle diameter can be measured using, for example, Morphologi G3 (manufactured by Malvern).
一方、高分子凝集剤を用意する。高分子凝集剤の大きさは、造粒物の大きさ以下であればよく、市販のものが造粒物の大きさ以下の大きさであれば、そのまま使用できる。造粒物の大きさ以上の場合は、例えば、アトマイザー（ハンマーミル、ダルトン社製）を用いて、所望の大きさになるよう粉砕すればよい。 On the other hand, a polymer flocculant is prepared. The size of the polymer flocculant may be equal to or smaller than the size of the granulated product, and can be used as it is if a commercially available product is smaller than the size of the granulated product. When the size is larger than the size of the granulated product, for example, it may be pulverized to a desired size using an atomizer (hammer mill, manufactured by Dalton).
次に、上記で得られた植物粉末と、上記高分子凝集剤とを混合し、水分を加えて混練する。水の添加量としては、例えば、植物粉末と高分子凝集剤とを混合した合計質量に対し、水が１５質量％〜２５０質量％であるのが好ましい。
混合物に対し水を加える目安としては、水を加えた混合物を手で握った時に簡単に混合物が解けずに形が残る程度であるとよい。
水の添加量の目安としては、高分子凝集剤が水を多く吸収するため、高分子凝集剤の混合割合が高いほど、加える水の量は多くなり、例えば、質量比（植物粉末／高分子凝集剤）が、９／１で混合されている混合物に対しては、混合物の合計質量に対し水１５質量％を加え、３／１で混合されている混合物に対しては、水２０質量％を加え、１／１で混合されている混合物に対しては、水８２質量％加える。
Next, the plant powder obtained above and the polymer flocculant are mixed, and water is added to knead. As an addition amount of water, it is preferable that water is 15 mass%-250 mass% with respect to the total mass which mixed plant powder and the polymer flocculent, for example.
As a guideline for adding water to the mixture, it is preferable that when the mixture to which water is added is held by hand, the shape remains without being easily dissolved.
As a measure of the amount of water added, since the polymer flocculant absorbs a lot of water, the higher the mixing ratio of the polymer flocculant, the larger the amount of water added. For example, the mass ratio (plant powder / polymer For a mixture in which the flocculant is mixed at 9/1, 15% by weight of water is added to the total weight of the mixture, and for a mixture mixed at 3/1, 20% by weight of water. And 82% by weight of water is added to the mixture mixed at 1/1.
混練・造粒装置としては、特に制限はなく、市販の造粒装置を使用することができ、例えば、押出式の造粒機（ダルトン製ディスクペレッター）が挙げられる。
混練後、該混練物を造粒機により押出し造粒物を得る。造粒物の直径は、３ｍｍ以下が好ましい。該造粒物は、流動層乾燥機で水分が５％以下になるまで乾燥させる。
その後、パワーミルＰ３型解砕機（昭和化学機械工作所製）により、所定の長さ（好ましくは、２ｍｍ以下の長さ）となるように切りそろえられる。こうして本発明の植物粉末と高分子凝集剤とを混合してなる造粒物からなる水浄化剤が得られる。
There is no restriction | limiting in particular as a kneading | mixing and granulating apparatus, A commercially available granulating apparatus can be used, For example, an extrusion-type granulator (Dalton disk pelleter) is mentioned.
After kneading, the kneaded product is extruded with a granulator to obtain a granulated product. The diameter of the granulated product is preferably 3 mm or less. The granulated product is dried with a fluidized bed dryer until the water content becomes 5% or less.
Then, it is trimmed so that it may become predetermined length (preferably length of 2 mm or less) with a power mill P3 type crusher (made by Showa Chemical Machine Works). In this way, a water purification agent comprising a granulated product obtained by mixing the plant powder of the present invention and the polymer flocculant is obtained.
（水浄化方法）
本発明の水浄化方法は、上述した本発明の水浄化剤を水に溶かし、植物粉末と高分子凝集剤との分散液を得、該分散液を排水に供することにより排水中の無機系不要物を除去する方法である。
前記水浄化剤は、定量器で定量され、その後溶解槽に供給される。
そこで、所定量の水に溶解されて、得られた水浄化剤の分散液は、反応槽に送られ、排水に供される。反応槽において、排水中の無機系不要物（例えば、ニッケル、銅、フッ素など）は、植物粉末と高分子凝集剤とにより凝集分離される。該凝集物を取り除くことにより、排水は浄化される。
(Water purification method)
In the water purification method of the present invention, the above-described water purification agent of the present invention is dissolved in water to obtain a dispersion of plant powder and a polymer flocculant, and the dispersion is used for drainage, so that an inorganic system in the wastewater is unnecessary. This is a method for removing objects.
The water purifier is quantified by a quantifier and then supplied to a dissolution tank.
Then, the dispersion liquid of the water purifier obtained by being dissolved in a predetermined amount of water is sent to the reaction tank and used for drainage. In the reaction tank, inorganic unnecessary substances (for example, nickel, copper, fluorine, etc.) in the wastewater are agglomerated and separated by the plant powder and the polymer flocculant. By removing the agglomerates, the waste water is purified.
以下、実施例及び比較例を挙げて、本発明をさらに具体的に説明するが、本発明は、これらに限定されるものではない。
実施例において、嵩比重、嵩比重のばらつきは、次のようにして求めた。
EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated further more concretely, this invention is not limited to these.
In the examples, the bulk specific gravity and the variation in bulk specific gravity were determined as follows.
［嵩比重］
嵩比重は、パウダーテスターＰＴ−Ｎ型（ホソカワミクロン社製）を用いて測定した。
１００ｃｃのステンレスカップに１００ｃｃの試料を静かに入れ、その時の試料の比重を測定し、嵩比重とした。
［嵩比重のばらつき］
測定試料である水浄化剤を、７００ｍｍ×５００ｍｍのポリ袋に入れ、袋の口を熱封止した。次に、袋に入れた水浄化剤を上下に振動させ、その後、該袋の上下部分を含む５点から試料を取り出し、それぞれの嵩比重を測定した。
嵩比重の最大値と最小値を記録し、その最大値と最小値をもとに以下の計算によりばらつきを求めた。
（嵩比重の最大値と最小値の差／嵩比重の最小値）×１００
[Bulk specific gravity]
The bulk specific gravity was measured using a powder tester PT-N type (manufactured by Hosokawa Micron).
A 100 cc sample was gently put into a 100 cc stainless cup, and the specific gravity of the sample at that time was measured to obtain a bulk specific gravity.
[Variation of bulk specific gravity]
The water purification agent as a measurement sample was put in a 700 mm × 500 mm plastic bag, and the bag mouth was heat-sealed. Next, the water purifier contained in the bag was vibrated up and down, and then samples were taken out from five points including the upper and lower portions of the bag, and each bulk specific gravity was measured.
The maximum value and the minimum value of the bulk specific gravity were recorded, and the variation was obtained by the following calculation based on the maximum value and the minimum value.
(Difference between maximum and minimum bulk specific gravity / minimum bulk specific gravity) x 100
（実施例１）
中国産の長朔黄麻を天日乾燥により水分含有量が５％以下になるまで乾燥させた。
次に、その乾燥した植物をアトマイザー（ハンマーミル、ダルトン社製）で、数平均粒径が２５０μｍ以下になるまで粉砕し、植物粉末を得た。
Example 1
Chinese oak burlap was dried by sun drying until the water content was 5% or less.
Next, the dried plant was pulverized with an atomizer (hammer mill, manufactured by Dalton Co.) until the number average particle size became 250 μm or less to obtain a plant powder.
高分子凝集剤は、ポリアクリルアミドの粉末（Ｆｌｏｐａｎ ＡＮ ９５６ 株式会社エス・エヌ・エフ製）を使用した。
植物粉末：高分子凝集剤の混合割合を質量比（植物粉末／高分子凝集剤）が１／１となるように、植物粉末と高分子凝集剤を混合し、該混合物の合計質量に対し水を８２質量％加えて混練した。
該混練物を押出式の造粒機（ダルトン製ディスクペレッター）を用いて押出し造粒物を得た。造粒機のダイスサイズ（φ）を２ｍｍとし、直径約２ｍｍの造粒物を得た。この造粒物を、流動層乾燥機で、水分が５％以下まで乾燥した後、パワーミルＰ３型解砕機により長さ（Ｌ）を約２ｍｍで切り落とし、造粒物１を得た。
As the polymer flocculant, polyacrylamide powder (Flopan AN 956, manufactured by SNF Co., Ltd.) was used.
Plant powder: The polymer flocculant is mixed so that the mass ratio (plant powder / polymer flocculant) is 1/1, and the mixing ratio of the plant flocculant is water with respect to the total mass of the mixture. Was added and kneaded.
The kneaded product was extruded and granulated using an extrusion granulator (Dalton disk pelleter). The granule having a diameter of about 2 mm was obtained by setting the die size (φ) of the granulator to 2 mm. This granulated product was dried to a water content of 5% or less with a fluidized bed dryer, and then the length (L) was cut off with a power mill P3 type crusher at about 2 mm to obtain a granulated product 1.
造粒物１について、上述した測定を行い、嵩比重値（最大値、最小値）、嵩比重のばらつきを求めた。結果を表１に示す。 About the granulated material 1, the measurement mentioned above was performed and the dispersion | variation in bulk specific gravity value (maximum value, minimum value) and bulk specific gravity was calculated | required. The results are shown in Table 1.
＜自動供給機への適用の有効性評価＞
嵩比重をある程度高い値とすることにより、定量にかかる時間と電力を抑えるという観点から、水浄化剤の嵩比重の値（最小値の方で評価する）を以下の基準で分類し、自動化浄化装置への適用の有効性（その１）を評価した。結果を表１に示す。
−評価基準−
○：嵩比重の値が０．４ｇ／ｃｍ３以上である。
△：嵩比重の値が０．３３ｇ／ｃｍ３以上０．４ｇ／ｃｍ３未満である。
×：嵩比重の値が０．３３ｇ／ｃｍ３未満である。
<Evaluation of the effectiveness of application to automatic feeders>
From the standpoint of reducing the time and power required for quantification by setting the bulk specific gravity to a relatively high value, the bulk specific gravity values (evaluated by the minimum value) of water purifiers are classified according to the following criteria for automated purification. The effectiveness (1) of application to the apparatus was evaluated. The results are shown in Table 1.
-Evaluation criteria-
A: The value of bulk specific gravity is 0.4 g / cm 3 or more.
(Triangle | delta): The value of bulk specific gravity is 0.33 g / cm < 3 > or more and less than 0.4 g / cm < 3 >.
X: The value of bulk specific gravity is less than 0.33 g / cm 3 .
配合割合のブレが少ない、水浄化性能にムラのない水浄化剤を、繰り返し精度よく供給することができるという観点から、水浄化剤の嵩比重のばらつきを以下の基準で分類し、自動化浄化装置への適用の有効性（その２）を評価した。結果を表１に示す。
−評価基準−
◎：水浄化剤の嵩比重のばらつきが１％以下である。
○：水浄化剤の嵩比重のばらつきが１％より大きく４．５％以下である。
□：水浄化剤の嵩比重のばらつきが４．５％より大きく６％以下である。
△：水浄化剤の嵩比重のばらつきが６％より大きく１０％以下である。
×：水浄化剤の嵩比重のばらつきが１０％より大きい。
From the standpoint that water purification agents with little blending ratio fluctuation and water purification performance can be supplied repeatedly with high accuracy, the variation of the bulk specific gravity of water purification agents is classified according to the following criteria, and an automated purification device The effectiveness of the application (2) was evaluated. The results are shown in Table 1.
-Evaluation criteria-
(Double-circle): The dispersion | variation in the bulk specific gravity of a water purifier is 1% or less.
○: The variation of the bulk specific gravity of the water purifier is greater than 1% and 4.5% or less.
□: The variation of the bulk specific gravity of the water purifier is greater than 4.5% and 6% or less.
(Triangle | delta): The dispersion | variation in the bulk specific gravity of a water purifier is larger than 6% and is 10% or less.
X: The variation of the bulk specific gravity of the water purifier is larger than 10%.
（実施例２）
実施例１において、植物粉末：高分子凝集剤の混合割合を質量比（植物粉末／高分子凝集剤）が３／１となるように、植物粉末と高分子凝集剤を混合し、該混合物の合計質量に対し水を２０質量％加えて混練した以外は、実施例１と同様にして水浄化剤を得た。
実施例１と同様にして、嵩比重値（最大値、最小値）、嵩比重のばらつきを求め、併せて自動供給機への適用の有効性も評価した。結果を表１に示す。
(Example 2)
In Example 1, the plant powder and the polymer flocculant were mixed so that the mass ratio (plant powder / polymer flocculant) of the mixture ratio of plant powder: polymer flocculant was 3/1. A water purifier was obtained in the same manner as in Example 1 except that 20% by mass of water was added to the total mass and kneaded.
In the same manner as in Example 1, the bulk specific gravity value (maximum value, minimum value) and the variation in bulk specific gravity were determined, and the effectiveness of application to an automatic feeder was also evaluated. The results are shown in Table 1.
（実施例３）
実施例１において、植物粉末：高分子凝集剤の混合割合を質量比（植物粉末／高分子凝集剤）が９／１となるように、植物粉末と高分子凝集剤を混合し、該混合物の合計質量に対し水を１５質量％加えて混練した以外は、実施例１と同様にして水浄化剤を得た。
実施例１と同様にして、嵩比重値（最大値、最小値）、嵩比重のばらつきを求め、併せて自動供給機への適用の有効性も評価した。結果を表１に示す。
(Example 3)
In Example 1, the plant powder and the polymer flocculant were mixed so that the mass ratio (plant powder / polymer flocculant) of the mixture ratio of plant powder: polymer flocculant was 9/1. A water purifier was obtained in the same manner as in Example 1 except that 15% by mass of water was added to the total mass and kneaded.
In the same manner as in Example 1, the bulk specific gravity value (maximum value, minimum value) and the variation in bulk specific gravity were determined, and the effectiveness of application to an automatic feeder was also evaluated. The results are shown in Table 1.
（比較例１）
実施例１の植物粉末と高分子凝集剤を用い、植物粉末：高分子凝集剤の混合割合を質量比（植物粉末／高分子凝集剤）が１／１となるように、植物粉末と高分子凝集剤を混合した非造粒物の水浄化剤を比較例１とした。
実施例１と同様にして、嵩比重値（最大値、最小値）、嵩比重のばらつきを求め、併せて自動供給機への適用の有効性も評価した。結果を表１に示す。
(Comparative Example 1)
Using the plant powder and the polymer flocculant of Example 1, the plant powder and the polymer flocculant were mixed so that the mass ratio (plant powder / polymer flocculant) was 1/1. A non-granulated water purification agent mixed with a flocculant was used as Comparative Example 1.
In the same manner as in Example 1, the bulk specific gravity value (maximum value, minimum value) and the variation in bulk specific gravity were determined, and the effectiveness of application to an automatic feeder was also evaluated. The results are shown in Table 1.
（比較例２）
比較例１において、植物粉末：高分子凝集剤の混合割合を質量比（植物粉末／高分子凝集剤）が３／１となるようにした以外は、比較例１と同様にして非造粒物の水浄化剤を得た。
実施例１と同様にして、嵩比重値（最大値、最小値）、嵩比重のばらつきを求め、併せて自動供給機への適用の有効性も評価した。結果を表１に示す。
(Comparative Example 2)
In Comparative Example 1, a non-granulated product was obtained in the same manner as in Comparative Example 1, except that the mixing ratio of plant powder: polymer flocculant was 3/1 (mass powder / polymer flocculant). Water purifier was obtained.
In the same manner as in Example 1, the bulk specific gravity value (maximum value, minimum value) and the variation in bulk specific gravity were determined, and the effectiveness of application to an automatic feeder was also evaluated. The results are shown in Table 1.
（比較例３）
比較例１において、植物粉末：高分子凝集剤の混合割合を質量比（植物粉末／高分子凝集剤）が９／１となるようにした以外は、比較例１と同様にして非造粒物の水浄化剤を得た。
実施例１と同様にして、嵩比重値（最大値、最小値）、嵩比重のばらつきを求め、併せて自動供給機への適用の有効性も評価した。結果を表１に示す。
(Comparative Example 3)
In Comparative Example 1, a non-granulated product was obtained in the same manner as in Comparative Example 1 except that the mixing ratio of plant powder: polymer flocculant was 9/1 (mass powder / polymer flocculant). Water purifier was obtained.
In the same manner as in Example 1, the bulk specific gravity value (maximum value, minimum value) and the variation in bulk specific gravity were determined, and the effectiveness of application to an automatic feeder was also evaluated. The results are shown in Table 1.
表１の結果から、植物粉末と高分子凝集剤との混合物の造粒物からなる本発明の水浄化剤は、嵩比重の値がある程度高く、嵩比重の値のバラツキが少ないものであることが確認できた。
本発明者らが確認したところ、長朔黄麻の粉末の嵩比重は、０．１５ｇ／ｃｍ３、高分子凝集剤の嵩比重は、０．７５ｇ／ｃｍ３である。これらの混合物の嵩比重は、比較例１〜３で示されるように、０．１８ｇ／ｃｍ３〜０．３３ｇ／ｃｍ３程度である。しかし、本発明の水浄化剤は、これらの混合物の造粒物としたことで、嵩比重の値を数段引き上げることができた。
From the results shown in Table 1, the water purifier of the present invention comprising a granulated product of a mixture of plant powder and polymer flocculant has a high bulk specific gravity value and a small variation in bulk specific gravity value. Was confirmed.
As a result of confirmation by the present inventors, the bulk specific gravity of the powder of Nagatoro burlap is 0.15 g / cm 3 , and the bulk specific gravity of the polymer flocculant is 0.75 g / cm 3 . The bulk specific gravity of these mixtures is about 0.18 g / cm 3 to 0.33 g / cm 3 as shown in Comparative Examples 1 to 3 . However, since the water purifier of the present invention is a granulated product of these mixtures, the bulk specific gravity value can be increased several stages.
＜水浄化性能の評価＞
ニッケルイオンが２０ｐｐｍ溶解している酸性溶液からニッケルイオンを凝集沈殿させる方法により、実施例の水浄化剤の水浄化性能について評価した。
先ず、ジャーテスターを用いて溶液を１５０ｒｐｍで攪拌しながら塩化第２鉄５０ｐｐｍを添加し、続けて水酸化ナトリウムを添加してｐＨ９〜１０とすることで１次凝集を実施した。
次に、２次凝集として実施例１の水浄化剤、比較例１の水浄化剤、実施例１において使用した高分子凝集剤（Ｆｌｏｐａｎ ＡＮ ９５６ 株式会社エス・エヌ・エフ製）のみからなる水浄化剤（比較例４とする）を用い、それぞれ１０ｐｐｍ添加し、回転数を５０ｒｐｍにして２分間攪拌した。攪拌停止後１分経過した上澄み水を採取し、ラムダ（Λ）９０００（共立理化学研究所製）により、ニッケル濃度を測定した。結果を表２に示す。
<Evaluation of water purification performance>
The water purification performance of the water purification agents of the examples was evaluated by a method of coagulating and precipitating nickel ions from an acidic solution in which 20 ppm of nickel ions were dissolved.
First, 50 ppm of ferric chloride was added while stirring the solution at 150 rpm using a jar tester, and then sodium hydroxide was added to adjust the pH to 9 to 10 to perform primary aggregation.
Next, water consisting only of the water purifying agent of Example 1 and the water purifying agent of Comparative Example 1 as the secondary agglomeration and the polymer flocculant used in Example 1 (Flopan AN 956 manufactured by SNF Corporation). Using a purifying agent (referred to as Comparative Example 4), 10 ppm each was added, and the rotational speed was 50 rpm, followed by stirring for 2 minutes. Supernatant water 1 minute after the stirring was stopped was collected, and the nickel concentration was measured with Lambda (Λ) 9000 (manufactured by Kyoritsu Riken). The results are shown in Table 2.
表２の結果から、高分子凝集剤のみからなる水浄化剤（比較例４）に対し、長朔黄麻に５０％置き換えることで浄化性能（ニッケルの凝集沈殿性）が向上することが、比較例１の結果より確認できた。そして、その水浄化性能は、植物粉末と高分子凝集剤との混合物の造粒物の態様であっても維持されていることが、実施例１の結果より確認できた。
植物粉末と高分子凝集剤との混合物を含む造粒物からなる本発明の水浄化剤は、優れた水浄化性能を示すことが確認できた。
From the results shown in Table 2, it is a comparative example that the purification performance (cohesive precipitation of nickel) is improved by replacing 50% of the water purification agent (Comparative Example 4) consisting of only the polymer flocculant with long burlap. It was confirmed from the result of 1. And it has confirmed from the result of Example 1 that the water purification performance is maintained even if it is the aspect of the granulated material of the mixture of a plant powder and a polymer flocculant.
It was confirmed that the water purification agent of the present invention comprising a granulated product containing a mixture of plant powder and a polymer flocculant exhibits excellent water purification performance.
Claims (7)
前記水浄化剤の嵩比重が、０．４ｇ／ｃｍ３以上であり、
前記造粒物の直径が３ｍｍ以下、かつ長さが３ｍｍ以下であることを特徴とする水浄化剤。 A water purifying agent that is a granulated product composed of a mixture of at least one plant powder of Nagatoro Hemp and Morohaya and a polymer flocculant,
The water specific gravity of the water purifier is 0.4 g / cm 3 or more,
A diameter of the granulated product is 3 mm or less and a length is 3 mm or less.
前記水浄化剤の嵩比重が、０．４ｇ／ｃｍ３以上であり、
前記造粒物の水分が、５％以下であることを特徴とする水浄化剤。 A water purifying agent that is a granulated product composed of a mixture of at least one plant powder of Nagatoro Hemp and Morohaya and a polymer flocculant,
The water specific gravity of the water purifier is 0.4 g / cm 3 or more,
A water purifier, wherein the granulated product has a water content of 5% or less.
前記水浄化剤の嵩比重が、０．４ｇ／ｃｍ３以上であり、
前記植物粉末の数量平均粒径が、２５０μｍ以下であることを特徴とする水浄化剤。 A water purifying agent that is a granulated product composed of a mixture of at least one plant powder of Nagatoro Hemp and Morohaya and a polymer flocculant,
The water specific gravity of the water purifier is 0.4 g / cm 3 or more,
A water purification agent, wherein the plant powder has a quantity average particle size of 250 μm or less.
乾燥植物を粉砕し、植物粉末を得る植物粉末製造工程と、前記植物粉末と高分子凝集剤とを混合し、水分を加えて混練し、押出造粒により造粒物を得る造粒工程とを含むことを特徴とする水浄化剤の製造方法。 A method for producing a water purifier according to any one of claims 1 to 5,
A plant powder production step of pulverizing a dried plant to obtain a plant powder, a granulation step of mixing the plant powder and a polymer flocculant, kneading by adding moisture, and obtaining a granulated product by extrusion granulation A method for producing a water purifying agent, comprising:
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