JPH01171696A - Production of purifying filter medium - Google Patents
Production of purifying filter mediumInfo
- Publication number
- JPH01171696A JPH01171696A JP62333317A JP33331787A JPH01171696A JP H01171696 A JPH01171696 A JP H01171696A JP 62333317 A JP62333317 A JP 62333317A JP 33331787 A JP33331787 A JP 33331787A JP H01171696 A JPH01171696 A JP H01171696A
- Authority
- JP
- Japan
- Prior art keywords
- filter medium
- granules
- calcium silicate
- purifying filter
- crushed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000000378 calcium silicate Substances 0.000 claims abstract description 24
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 24
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000008187 granular material Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 claims abstract description 7
- UGGQKDBXXFIWJD-UHFFFAOYSA-N calcium;dihydroxy(oxo)silane;hydrate Chemical compound O.[Ca].O[Si](O)=O UGGQKDBXXFIWJD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims description 14
- 238000005469 granulation Methods 0.000 claims description 9
- 230000003179 granulation Effects 0.000 claims description 9
- 238000005187 foaming Methods 0.000 claims description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000010865 sewage Substances 0.000 abstract description 5
- 210000002700 urine Anatomy 0.000 abstract description 2
- 239000007858 starting material Substances 0.000 abstract 2
- 241000283690 Bos taurus Species 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 15
- 238000000746 purification Methods 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 7
- 239000002243 precursor Substances 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、家畜尿汚水、生活難廃水、下水等の有機性汚
水の処理に用いられる浄化濾材の製造方法に関し、特に
粒状の浄化濾材の製造方法に関するものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method for producing a purification filter medium used for treating organic wastewater such as livestock urine wastewater, non-living wastewater, and sewage. This relates to a manufacturing method.
［従来の技術］ 従来、有機性の汚水等を浄化するために、砂利。[Conventional technology] Traditionally, gravel is used to purify organic wastewater.
プラスチック片、ハニカムチューブ等の浄化濾材が、好
気性濾床槽などの各種の浄化槽に充填されていた。そし
て、この様な好気性濾床槽においては、過密、汚水を流
入させるとともに曝気して浄化濾材表面に生物膜を生じ
させ、この生物膜の微生物の働きにより汚水を浄化して
いた。Purification filter media such as plastic pieces and honeycomb tubes were filled into various types of septic tanks, including aerobic filter bed tanks. In such an aerobic filter bed tank, when it is overcrowded, sewage is allowed to flow in and aeration is performed to form a biofilm on the surface of the purification filter, and the sewage is purified by the action of microorganisms in this biofilm.
ところが前記浄化濾材は浄化能力が低い等の問題点があ
るので、近年、珪酸カルシウム水和物を粒状に加工した
ン争化濾材が提案されていた。この珪酸カルシウム永和
物は、生物膜の微生物の生息に良好な環境を作り出すと
ともに、リン酸イオンを除去し、かつ硝化、脱窒素を促
進することが知られている。However, the purification filter medium has problems such as low purification ability, and in recent years, a competitive filter medium in which calcium silicate hydrate is processed into granules has been proposed. This calcium silicate permanent product is known to create a favorable environment for microorganisms in biofilms, remove phosphate ions, and promote nitrification and denitrification.
この様な珪酸カルシウム水和物の粒状順化泄材を製造す
るには、まず、石灰質原料、珪酸質原料及び水を所定の
配合比で混合し、反応及び発泡させた後に凝固させる。To produce such a granular acclimatized excretory material of calcium silicate hydrate, first, a calcareous raw material, a silicate raw material, and water are mixed in a predetermined mixing ratio, reacted and foamed, and then solidified.
次に、その凝固物を破砕した後に、パンベレタイザ等で
造粒し、この造粒物をオートクレーブで養生する。Next, after crushing the coagulated material, it is granulated using a pan beletizer or the like, and the granulated material is cured in an autoclave.
［発明が解決しようとする問題点］
ところが、前記原料から製造した凝固物の水分量は多く
、また、原料の性質上パンベレタイザ等を用いて造粒す
る際に水分が浸出してくる。従って、この様にして製造
された造粒物をオートクレーブ養生すると、造粒物同志
が互いに接着して、第４図に示すような粒の大きな浄化
濾材Ａ１になってしまうことがあり、その結果、粒度の
揃った）量化濾材を製造しにくいという問題点があった
。[Problems to be Solved by the Invention] However, the amount of water in the coagulated product produced from the raw materials is large, and due to the nature of the raw materials, water leaches out during granulation using a pan beletizer or the like. Therefore, when the granules produced in this way are cured in an autoclave, the granules may adhere to each other, resulting in a purifying filter medium A1 with large particles as shown in Figure 4. There was a problem in that it was difficult to produce a quantified filter medium (with uniform particle size).
本発明は、前記浄化濾材の粒度を容易に均一にするとと
もに、浄化濾材の歩留りのよい製造方法を提供すること
を目的とする。An object of the present invention is to provide a method for manufacturing a purifying filter medium that can easily uniformize the particle size of the purifying filter medium and has a high yield of the purifying filter medium.
［問題点を解決するための手段］
上記の問題点を解決するために、本発明は以下の構成を
採用した、即ち、本発明は、
石灰質原料、珪酸質原料及び水を所定の配合比で混合し
て反応及び発泡させた後、凝固する工程、該工程で得ら
れた凝固物を破砕する工程、該工程で得られた破砕物を
造粒する造粒工程、該工程で得られた造粒物をオートク
レーブで養生する工程からなる浄化濾材の製造方法にお
いて、前記造粒工程で得られた造粒物の表面に珪酸カル
シウムの粉末を付着させることを特徴とする浄化濾材の
製造方法を要旨とする。[Means for Solving the Problems] In order to solve the above problems, the present invention adopts the following configuration. That is, the present invention has the following features: A step of solidifying after mixing, reacting and foaming, a step of crushing the solidified product obtained in this step, a granulation step of granulating the crushed product obtained in this step, a step of granulating the crushed product obtained in this step Abstract: A method for producing a purifying filter medium comprising a step of curing granules in an autoclave, the method comprising adhering calcium silicate powder to the surface of the granules obtained in the granulation step. shall be.
ここで、前記珪酸カルシウムとしては、例えば、養生し
て製造したトバモライト、ゾノトライト。Here, examples of the calcium silicate include tobermorite and xonotlite produced by curing.
Ｃ９Ｈゲル、フオシヤジヤイト、ジャイロライト。C9H gel, phosciaite, gyrolite.
ヒレプランダイト等の１種又は２種以上を主成分とする
粉末を使用する。A powder containing one or more types of hireplandite as a main component is used.
［作用］
石灰質原料、珪酸質原料及び水を所定の配合比で混合し
て、反応及び発泡させ、更に凝固させることにより空隙
の多い凝固物が製造される。そして、この凝固物を粉砕
して得られた微細な破砕物を用いて造粒が行われる。こ
の凝固物自体は水分を多く含み、また造粒時には水分が
浸出して造粒物同志が接着し易いが、造粒物の表面に珪
酸カルシウムの粉末を付着させることにより、オートク
レーブ養生を行う際に造粒物同志が接着することがなく
、粒度の揃った粒状；量化濾材を製造することができる
。[Operation] A coagulated material with many voids is produced by mixing a calcareous raw material, a silicate raw material, and water at a predetermined mixing ratio, causing reaction and foaming, and further solidifying. Then, granulation is performed using the finely crushed material obtained by pulverizing this coagulated material. This coagulated material itself contains a lot of water, and during granulation, water leaches out and the granules tend to adhere to each other. However, by attaching calcium silicate powder to the surface of the granules, it is possible to Granules do not adhere to each other, making it possible to produce a granular, quantified filter medium with uniform particle size.
［実施例］ 以下本発明の実施例を図面に従って説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第１図及び第２図は、本実施例の）量化濾材の製造手順
を示している。尚、製造例として、トバモライトの製造
方法について説明する。FIG. 1 and FIG. 2 show the manufacturing procedure of the quantified filter medium of this example. As a manufacturing example, a method for manufacturing tobermorite will be described.
まず、石灰質原料及び珪酸質原料を、第２図に示す粉砕
装置２に入れて粉砕する。この石灰質原料としては、生
石灰、消石灰などを使用し、珪酸質原料としては、珪石
、珪砂、クリストバライト。First, calcareous raw materials and silicic raw materials are placed in a crushing device 2 shown in FIG. 2 and crushed. The calcareous raw materials used include quicklime and slaked lime, and the silicic raw materials used include silica stone, silica sand, and cristobalite.
無定形シリカ、珪藻土、フェロシリコンダスト。Amorphous silica, diatomaceous earth, ferrosilicon dust.
白土などを使用する（原料粉砕工程Ｉ）。White clay or the like is used (raw material crushing process I).
前記粉砕した原料から、珪石粉末５重量部、生石灰粉末
２重量部、Ｗ通ポルトランドセメント３重量 ｆｌＥ
（Ｃａｂ／ Ｓ ｉ ０２モル比＝０．８）を調整し、
水７重量部を加え、場合によっては、アルミニウム粉末
などの金属発）包剤や、界面活性作用より泡を生じさせ
る起泡剤等を添加して、ミキサー４に入れて混合し、ス
ラリー６を製造する（スラリー製造工程■）。From the pulverized raw materials, 5 parts by weight of silica powder, 2 parts by weight of quicklime powder, and 3 parts by weight of W-type Portland cement flE
Adjust (Cab/S i 02 molar ratio = 0.8),
Add 7 parts by weight of water, and in some cases, add a packaging agent made of metal such as aluminum powder or a foaming agent that generates foam through surface active action, and mix in the mixer 4 to make the slurry 6. Manufacture (slurry manufacturing process ■).
次に、そのスラリー６をモールド８に注入し、ここで反
応及び発泡を十分に行わせた後に、静置して凝固させて
、水分約６０％程度の凝固物１０を製造する（発泡凝固
工程■）。Next, the slurry 6 is poured into a mold 8, where reaction and foaming are sufficiently carried out, and then left standing to solidify to produce a solidified product 10 having a water content of approximately 60% (foaming solidification step). ■).
この様にして製造した凝固物１０をモールド８から取り
出し、適当な大きさに切断後に、ブラシ状の破砕工具１
２で細かく砕いて破砕物１４を製造する（粉砕工程■）
。The coagulated material 10 produced in this manner is taken out from the mold 8, cut into an appropriate size, and then cut into a brush-like crushing tool 1.
2 to produce crushed material 14 (pulverization process ■)
.
この破砕物１４をパンベレタイザ１６に入れて、平均粒
径約５ｍｍの造粒物１７を製造する。モして造粒物１７
が前記の径になった時点で、別工程でオートクレーブ養
生して製造した珪酸カルシウム永和物の粉末１８を、破
砕物１４の約１０〜２０％の割合で添加し、第３図に示
すような浄化濾材前駆物質２０を製造する。尚、添加す
る珪酸力ルシウム水和物としては、例えは、トバモライ
ト。This crushed material 14 is placed in a pan beletizer 16 to produce granulated material 17 having an average particle diameter of about 5 mm. Molded granules 17
When it reaches the above diameter, calcium silicate permanent powder 18 produced by autoclave curing in a separate process is added at a ratio of about 10 to 20% of the crushed material 14 to form a powder as shown in FIG. A purified filter media precursor 20 is produced. An example of the lucium silicate hydrate to be added is tobermorite.
ジノトライ）、ＣＳＨゲル、フオシヤジヤイト。Ginotri), CSH gel, and Huosiyaite.
ジャイロライト、ヒレプランダイト等の１種又は２種以
上を主成分とする粉末を利用する（造粒工程Ｖ）。A powder containing one or more types of gyrolite, hireplandite, etc. as a main component is used (granulation step V).
次に、この様にして製造した浄化濾材前駆物質２０を、
オートクレーブ２２中に入れ、１８０℃。Next, the purification filter medium precursor 20 produced in this way is
Place in autoclave 22 and heat at 180°C.
１０気圧で１０時間水熱処理して、第３図に示す様な、
平均粒径約７ｍｍ、空隙率７０〜７５％の多孔質のトバ
モライトの粒状浄化濾材２４を製造する。この粒状浄化
濾材２４は、後述するＣＨＳケル、ゾノトライトと同様
に、ｐＨ緩衝能が高く、比表面積が２０〜４００ｍ２／
ｇと大きいので好ましい（オートクレープ工程■）。After hydrothermal treatment at 10 atm for 10 hours, the resultant was as shown in Figure 3.
A porous tobermorite granular purification filter medium 24 having an average particle size of about 7 mm and a porosity of 70 to 75% is manufactured. This granular purification filter medium 24 has a high pH buffering capacity and a specific surface area of 20 to 400 m2/
It is preferable because it is large (autoclape process ■).
次に、この粒状浄化濾材２４の素材である珪酸カルシウ
ム水和物の作用について説明する。Next, the action of calcium silicate hydrate, which is the material of this granular purifying filter medium 24, will be explained.
この粒状浄化濾材２４の表面には、前記珪酸カルシウム
水和物の結晶により微細な凹凸面が形成されているので
、この凹凸面が微生物の着床及び説リンには好ましく機
能する。このため粒状浄化濾材２４の表面における生物
膜の形成が容易であり、この生物膜によって生活雑排水
、下水などの有機性排水の有機物除去を行うことが可能
である。Since the surface of the granular purifying filter medium 24 has a finely uneven surface formed by the crystals of the calcium silicate hydrate, this uneven surface preferably functions for the settlement of microorganisms and the removal of phosphorus. Therefore, it is easy to form a biofilm on the surface of the granular purification filter medium 24, and it is possible to remove organic matter from organic wastewater such as gray water and sewage using this biofilm.
つまり珪酸カルシウム水和物を主成分とする多孔質の粒
状浄化濾材２４を用いることにより、固体粒子を含む排
水ばかりか有機物、リンを含む高温度の有機性排水の浄
化が可能である。That is, by using the porous granular purifying filter medium 24 containing calcium silicate hydrate as a main component, it is possible to purify not only wastewater containing solid particles but also high-temperature organic wastewater containing organic matter and phosphorus.
この様な性質を有する本実施例の粒状ンｅ化濾材２４の
製造方法の作用について説明する。The operation of the method for manufacturing the granular e-filter medium 24 of this embodiment having such properties will be explained.
前記破砕物１４には水分が多く、また、バンベレタイザ
１６で造粒する際に水分が浸出するので、造粒物１７同
志が互いに接着し易い。従って、バンペレタイザ１６中
で所定の径になるまで造粒した時点で、乾燥した珪酸カ
ルシウム水和物の粉末１日をバンベレタイザ１６中に添
加することにより、造粒物１７の表面に粉末１８付着す
る。それによって、造粒物１７がそれ以上大きくなるこ
とがない。また、造粒物１７の表面に粉末１８が付着し
て、表面が乾燥した浄化濾材前駆物質２０が形成される
ので、オートクレーブ養生してもその浄化濾材前駆物質
２０同志が接着することがなく、粒状浄化濾材２４同志
が接着して大きな粒になることを防止できる。従って、
粒度の揃った粒状序１：化濾材２４を製造することがで
きるので、粒度を揃えるためのふるい分は作業が簡略化
でき、製造した粒状浄化濾材２４の歩留りもよい。更に
、添加する粉末１日は、破砕物１４を養生してできる珪
酸カルシウム水和物と同様な水和物から形成されている
ので、粒状浄化濾材２４の性能は優れたものとなる。The crushed material 14 contains a lot of moisture, and since the moisture leaches out during granulation with the banbelletizer 16, the granulated materials 17 tend to adhere to each other. Therefore, when the granules are granulated to a predetermined diameter in the van pelletizer 16, one day of dried calcium silicate hydrate powder is added to the van pelletizer 16, thereby causing the powder 18 to adhere to the surface of the granulated material 17. . This prevents the granules 17 from becoming any larger. In addition, since the powder 18 adheres to the surface of the granules 17 to form a purified filter medium precursor 20 with a dry surface, the purified filter medium precursors 20 do not adhere to each other even after curing in an autoclave. It is possible to prevent the granular purifying filter media 24 from adhering to each other and becoming large particles. Therefore,
Since it is possible to manufacture the granular order 1: clarification filter medium 24 with a uniform particle size, the sieving work for uniformizing the particle size can be simplified, and the yield of the manufactured granular purification filter medium 24 is also good. Further, since the added powder is formed from a hydrate similar to the calcium silicate hydrate produced by curing the crushed material 14, the performance of the granular purifying filter medium 24 is excellent.
また他の例として、ＣＨＳゲル及びゾノトライトを形成
する条件を第１表に示すが、これらの製造の手順は前記
トバモライトと同様である。As another example, the conditions for forming CHS gel and xonotlite are shown in Table 1, and the procedure for producing them is the same as for tobermorite.
第１表
また前記各実施例における粒状浄化濾材２４の歩留りを
第２衷に示す。この第２表は、破砕物１４とそれに添加
する珪酸カルシウム水和物の粉末１８との重量比を変え
て造粒した場合の実験結果を示している。即ち、製造さ
れた粒状浄化濾材２４の粒度の均一化の程度を、歩留り
で示している。Table 1 also shows the yield of the granular purifying filter medium 24 in each of the examples described above. Table 2 shows the experimental results when granulation was carried out by changing the weight ratio of the crushed material 14 and the calcium silicate hydrate powder 18 added thereto. That is, the degree of uniformity of the particle size of the manufactured granular purifying filter medium 24 is indicated by the yield.
第２表
第２衷から明らかなように、破砕物１４に対して珪酸カ
ルシウム水和物の粉末１８を、１９： １から３： １
の範囲、好ましくは１４：１から３：１の範囲で添加す
れば、粒度の揃った粒状浄化濾材２４を容易に製造する
ことができ、歩留りがよくなる。As is clear from the second side of Table 2, the ratio of calcium silicate hydrate powder 18 to crushed material 14 is 19:1 to 3:1.
If it is added in a range of 14:1 to 3:1, it is possible to easily produce a granular purifying filter medium 24 with uniform particle size, resulting in a high yield.
尚、本発明は上述した実施例に同等限定されるものでは
なく、本発明の要旨を逸脱しない限りどの様な態様でも
実施することができる。例えは、粒状浄化濾材２４の粒
度についても、本実施例以外にも様々な粒度の粒状浄化
濾材２４に適用できることはもちろんである。更に、破
砕物１２から形成される珪酸カルシウム永和物と添加す
る珪酸カルシウム水和物とは、主成分の珪酸カルシウム
が同一であれは水和物の組成比が異なったものであって
もよい。It should be noted that the present invention is not equally limited to the embodiments described above, and can be implemented in any manner without departing from the gist of the present invention. For example, regarding the particle size of the granular purifying filter medium 24, it is of course applicable to granular purifying filter medium 24 having various particle sizes other than the present embodiment. Further, the calcium silicate permanent product formed from the crushed material 12 and the calcium silicate hydrate to be added may have different composition ratios of the hydrates as long as the calcium silicate as the main component is the same.
［発明の効果］
以上説明したように、破砕物を造粒してその造粒物の表
面に、珪酸カルシウムの粉末を付着させるで、造粒物同
志が接着することがなく、従って、粒度の均一な粒状浄
化濾材を容易に製造することができる。その結果、歩留
りを向上させることができる。又、表面に付着する粉末
が珪酸カルシウムであるので、ン争化濾材の効果を低下
させることがない。[Effect of the invention] As explained above, by granulating crushed materials and attaching calcium silicate powder to the surface of the granules, the granules do not adhere to each other, and therefore the particle size can be reduced. Uniform granular purifying filter media can be easily produced. As a result, yield can be improved. Furthermore, since the powder adhering to the surface is calcium silicate, the effectiveness of the filter medium is not reduced.
第１図は製造工程の手順を示す説明図、第２図はその工
程を装置とともに示す説明図、第３図は粉末が付着した
造粒物の正面図、第４図は従来の浄化濾材を示す正面図
である。
４・・・ミキサー
１０・・・凝固物
■４・・・破砕物
１６・・・バンペレタイザ
１７・・・造粒物
１８・・・珪酸カルシウム永和物の粉末２０・・・浄化
濾材前駆物質
２２・・・オートクレーブ
２４−・−粒状浄化濾材
特許出願人 小野田ニー・エル・シー株式会社代理人
弁理士 足′立 勉（ほか１名）第 １ 図
第３図
／２０
第４図Figure 1 is an explanatory diagram showing the steps of the manufacturing process, Figure 2 is an explanatory diagram showing the process together with equipment, Figure 3 is a front view of the granulated product with powder attached, and Figure 4 is a diagram showing the conventional purifying filter medium. FIG. 4...Mixer 10...Coagulated material ■4...Crushed material 16...Bun pelletizer 17...Granulated material 18...Powder of calcium silicate permanent 20...Purification filter medium precursor 22. ... Autoclave 24 - - Granular purification filter medium Patent applicant Onoda NLC Co., Ltd. Agent
Patent attorney Tsutomu Ashitate (and 1 other person) Figure 1 Figure 3/20 Figure 4
Claims (1)
合して反応及び発泡させた後、凝固する工程、該工程で
得られた凝固物を破砕する工程、該工程で得られた破砕
物を造粒する造粒工程、該工程で得られた造粒物をオー
トクレーブで養生する工程からなる浄化濾材の製造方法
において、前記造粒工程で得られた造粒物の表面に珪酸
カルシウムの粉末を付着させることを特徴とする浄化濾
材の製造方法。 ２ 珪酸カルシウムは、トバモライト、ゾノトライト、
ＣＳＨゲル、フオシヤジヤイト、ジャイロライト又はヒ
レプランダイトの１種又は２種以上を主成分とする特許
請求の範囲第１項記載の浄化濾材の製造方法。[Scope of Claims] 1. A step of mixing a calcareous raw material, a silicate raw material, and water at a predetermined mixing ratio, reacting and foaming the mixture, and then solidifying it; a step of crushing the solidified product obtained in the step; A method for producing a purifying filter medium comprising a granulation step of granulating the crushed material obtained in the step, and a step of curing the granulated material obtained in the step in an autoclave. A method for producing a purifying filter medium, which comprises adhering calcium silicate powder to the surface. 2 Calcium silicate includes tobermorite, xonotlite,
2. The method for producing a purifying filter medium according to claim 1, which contains one or more of CSH gel, phosciaite, gyrolite, or hireplandite as a main component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62333317A JPH01171696A (en) | 1987-12-25 | 1987-12-25 | Production of purifying filter medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62333317A JPH01171696A (en) | 1987-12-25 | 1987-12-25 | Production of purifying filter medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01171696A true JPH01171696A (en) | 1989-07-06 |
Family
ID=18264758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62333317A Pending JPH01171696A (en) | 1987-12-25 | 1987-12-25 | Production of purifying filter medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01171696A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03275194A (en) * | 1990-03-24 | 1991-12-05 | Onoda Autoclaved Light Weight Concrete Co Ltd | Filter medium for cleaning sewage and its production |
-
1987
- 1987-12-25 JP JP62333317A patent/JPH01171696A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03275194A (en) * | 1990-03-24 | 1991-12-05 | Onoda Autoclaved Light Weight Concrete Co Ltd | Filter medium for cleaning sewage and its production |
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