JPH0529520B2 - - Google Patents
Info
- Publication number
- JPH0529520B2 JPH0529520B2 JP59011031A JP1103184A JPH0529520B2 JP H0529520 B2 JPH0529520 B2 JP H0529520B2 JP 59011031 A JP59011031 A JP 59011031A JP 1103184 A JP1103184 A JP 1103184A JP H0529520 B2 JPH0529520 B2 JP H0529520B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- ettringite
- dehydrated
- present
- sludge
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 229910001653 ettringite Inorganic materials 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000010802 sludge Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000002440 industrial waste Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000003839 salts Chemical group 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052920 inorganic sulfate Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
- C04B7/323—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Treatment Of Sludge (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、含水状態の泥状物、例えば工業廃棄
物や産業廃棄物として排出される各種のヘドロや
水を多量に含む軟弱土等を処理し、取扱い易い状
態に変化せしめる方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is applicable to wet mud, such as industrial waste, various types of sludge discharged as industrial waste, and soft soil containing a large amount of water. It relates to a method of processing and changing it into a state that is easy to handle.
（従来の技術）
含水量の多い泥状物を処理する方法としては、
例えば特開昭52−124753号公報に示されているア
ウインに石灰及び無機硫酸塩を混合して水和時に
エトリンガイトが生じる混合物を利用することに
よつて泥状物を処理する方法が知られている。(Conventional technology) As a method for treating sludge with a high water content,
For example, there is a known method of treating mud by using a mixture of lime and inorganic sulfate mixed with auin to produce ettringite upon hydration, as disclosed in JP-A No. 52-124753. There is.
（発明が解決しようとする課題）
しかしながら前記公報の処理方法では、混合物
が水和してエトリガイドとなるまでに時間がかか
り、その実施例にも示されているように、泥状物
に前記混合物を多量に添加しても、泥状物が処理
し易い状態になるまでに３日以上の必要とすると
いう問題点があつた。(Problems to be Solved by the Invention) However, in the treatment method of the above publication, it takes time for the mixture to hydrate and become Etriguide, and as shown in the examples, the mixture is Even when a large amount of is added, there is a problem in that it takes three days or more for the slurry to reach a state where it can be easily treated.
また、このように長時間が必要であるので、処
理途中で雨等が掛からないように処理場に覆いが
必要であるという問題点も付随している。 Furthermore, since such a long time is required, there is also the problem that the processing site needs to be covered to prevent rain etc. during the processing.
本発明の目的は、これらの泥状物を短時間に運
搬、廃棄、埋立て等の処理がし易い状態に変化さ
せる処理方法を提供することである。 An object of the present invention is to provide a processing method that changes these muddy materials into a state in which they can be easily transported, disposed of, landfilled, etc. in a short period of time.
（課題を解決する手段）
本発明は、それ自身は水との反応による吸水性
を生じない含水泥状物に加熱脱水したエトリンガ
イトを混合することを特徴とする含水泥状物の処
理方法である。(Means for Solving the Problems) The present invention is a method for treating water-containing mud, which is characterized by mixing heated and dehydrated ettringite with water-containing mud that itself does not produce water absorption through reaction with water. .
本発明に使用する加熱脱水したエトリンガイト
は、3CaO・Al2O3・3CaSO4で表され、結晶水を
有するエトリンガイトを加熱し、脱水状態にした
ものである。加熱脱水する温度は200℃以上が好
ましい。 The heated and dehydrated ettringite used in the present invention is represented by 3CaO.Al 2 O 3 .3CaSO 4 and is obtained by heating ettringite containing water of crystallization to a dehydrated state. The temperature for heating and dehydration is preferably 200°C or higher.
なお、本発明で使用する脱水エトリンガイトは
単一物でなくとも、脱水エトリンガイトを含むよ
うな混合物等であつてもよい。 Note that the dehydrated ettringite used in the present invention does not have to be a single substance, but may be a mixture containing dehydrated ettringite.
更に、加熱脱水エトリンガイトは母塩の骨格が
残存しているもの、一部分解しているもの、ガラ
ス化している状態のものでも有効である。 Furthermore, heat-dehydrated ettringite is effective even if the mother salt skeleton remains, is partially decomposed, or is vitrified.
本発明が対象とするのは工業廃棄物や産業廃棄
物として排出される各種のヘドロや水を多量に含
む軟弱土等の含水泥状物であり、それ自身は水と
の反応による吸水性を生じない含水泥状物であ
る。 The objects of the present invention are industrial waste and hydrated mud such as various types of sludge discharged as industrial waste and soft soil containing a large amount of water, which themselves have water absorption properties due to reactions with water. It is a water-containing muddy substance that does not form.
前記泥状物の含有する水分のうち、極少量の水
を短時間に脱水させると、驚くべきことに泥状物
が取扱い易い状態に変化することを本発明者が見
出したのである。 The present inventors have surprisingly found that when a very small amount of the water contained in the slurry is dehydrated in a short period of time, the slurry becomes easier to handle.
従つて、脱水エトリンガイトはその結晶水に該
当する自重の85％に相当する水を脱水する能力が
あることが知られているが、この脱水能力で多く
の水を脱水する必要がなく、少量の脱水エトリン
ガイトの使用量が充分であり、処理後の容積等が
脱水エトリンガイトを添加することによつて、い
たずらに増大することがない。 Therefore, it is known that dehydrated ettringite has the ability to dehydrate water equivalent to 85% of its own weight, which corresponds to crystal water, but with this dehydration ability, there is no need to dehydrate a large amount of water, and only a small amount of water can be dehydrated. The amount of dehydrated ettringite used is sufficient, and the volume after treatment will not increase unnecessarily by adding dehydrated ettringite.
（実施例）
白石工業社製のエトリンガイト含水塩「サチン
ホワイト」を加熱して脱水したエトリンガイトを
含水比（Ｗ／Ｓ）が200％であるヘドロに対して
7.5重量％加え、撹拌混合した。(Example) Ettringite obtained by heating and dehydrating ettringite hydrated salt "Sachin White" manufactured by Shiraishi Kogyo Co., Ltd. was used against sludge with a water content ratio (W/S) of 200%.
7.5% by weight was added and mixed by stirring.
ヘドロは35分後に凝結し、取扱い状態に変化し
た。 The sludge congealed after 35 minutes and was ready for handling.
この処理物は無臭であり、地中に埋立てたが、
３年後も移乗は認められなかつた。 This treated material was odorless and was buried underground, but
Three years later, he was still not allowed to transfer.
比較のために、ヘドロを熱風乾燥機に入れて
150℃で乾燥させると、硫化物らしい悪臭を発生
した。 For comparison, put the sludge in a hot air dryer.
When dried at 150℃, a foul odor similar to sulfide was generated.
（効果） 本発明に従えば下記の効果を発揮する。(effect) According to the present invention, the following effects are achieved.
泥状物が迅速に取扱い易い状態に変化する。 The slurry quickly changes to a state that is easy to handle.
使用する脱水エトリンガイトの量が少なくて
済む。 Less amount of dehydrated ettringite is needed.
本発明では、加熱工程が無いので、泥状物が
加熱される際に発する悪臭を発生しない。 In the present invention, since there is no heating step, no foul odor is generated when the slurry is heated.
Claims (1)
い含水泥状物に加熱脱水したエトリンガイトを混
合することを特徴とする含水泥状物の処理方法。1. A method for treating water-containing mud, which comprises mixing heated and dehydrated ettringite with water-containing mud that itself does not produce water absorption through reaction with water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59011031A JPS60156600A (en) | 1984-01-26 | 1984-01-26 | Dehydration and solidification of water-containing sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59011031A JPS60156600A (en) | 1984-01-26 | 1984-01-26 | Dehydration and solidification of water-containing sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60156600A JPS60156600A (en) | 1985-08-16 |
| JPH0529520B2 true JPH0529520B2 (en) | 1993-04-30 |
Family
ID=11766707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59011031A Granted JPS60156600A (en) | 1984-01-26 | 1984-01-26 | Dehydration and solidification of water-containing sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60156600A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013188658A (en) * | 2012-03-13 | 2013-09-26 | Parker Corp | Paint mist treatment agent for wet paint booth circulating water, and wet paint booth circulating water recovery apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52124753A (en) * | 1976-04-13 | 1977-10-20 | Denki Kagaku Kogyo Kk | Solidifying material for sludge |
| JPS5412935A (en) * | 1977-06-28 | 1979-01-31 | Sanko Insatsu Kk | Instrument of teaching go |
-
1984
- 1984-01-26 JP JP59011031A patent/JPS60156600A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52124753A (en) * | 1976-04-13 | 1977-10-20 | Denki Kagaku Kogyo Kk | Solidifying material for sludge |
| JPS5412935A (en) * | 1977-06-28 | 1979-01-31 | Sanko Insatsu Kk | Instrument of teaching go |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013188658A (en) * | 2012-03-13 | 2013-09-26 | Parker Corp | Paint mist treatment agent for wet paint booth circulating water, and wet paint booth circulating water recovery apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60156600A (en) | 1985-08-16 |
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