JP3057050B2 - Construction sludge treatment method - Google Patents
Construction sludge treatment methodInfo
- Publication number
- JP3057050B2 JP3057050B2 JP10044381A JP4438198A JP3057050B2 JP 3057050 B2 JP3057050 B2 JP 3057050B2 JP 10044381 A JP10044381 A JP 10044381A JP 4438198 A JP4438198 A JP 4438198A JP 3057050 B2 JP3057050 B2 JP 3057050B2
- Authority
- JP
- Japan
- Prior art keywords
- solidifying agent
- sludge
- polymer
- construction sludge
- cement
- 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 - Fee Related
Links
Landscapes
- Treatment Of Sludge (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本新技術は建設汚泥の中でも
固形分濃度が４０ｗ％〜７５ｗ％（比重として１．３〜
１．８）の汚泥であり、コーン指数がおおむね２以下、
又は一軸圧縮強度がおおむね０．５ｋｇ／ｃｍ2以下の
建設汚泥を対象とし、処理方法としては新薬剤湿練によ
る固化方法であり、処理後のコーン指数はおおむね４以
上、又は一軸圧縮強度がおおむね１ｋｇ／ｃｍ2以上
で、スランプ値は１ｃｍ以下までに改良する低廉化方法
を目的としている。BACKGROUND OF THE INVENTION The new technology has a solid content of 40 w% to 75 w% (specific gravity of 1.3 to
1.8) Sludge with a corn index of approximately 2 or less,
Or, for construction sludge having an unconfined compressive strength of about 0.5 kg / cm 2 or less, the treatment method is a solidification method using a new chemical moistening, and the cone index after the treatment is about 4 or more, or the unconfined compressive strength is generally about It aims at a low cost method of improving the slump value to 1 cm or less at 1 kg / cm 2 or more.
【０００２】[0002]
【従来の技術】本新技術の特徴は今回開発された固化剤
にある。既存の固化剤の種類としてはセメント系固化
剤、高分子系固化剤に大別される。セメント系固化剤を
使用することによって改良された汚泥に強度は出るが、
養生期間が必要であること、粉塵公害が発生すること等
の問題点がある。次に高分子系固化剤を使用することに
よって、改良された汚泥は養生期間を必要とせずにスラ
ンプ値が１ｃｍ以下迄に改良されるが、改良土にアクリ
ルアミド、及び鉛が規制値以上に含有される場合があ
る。又、強度が発現しないため、紫外線等によって高分
子が分解され再泥化する恐れもある。2. Description of the Related Art The feature of the new technology lies in the solidifying agent developed this time. Existing solidifying agents are roughly classified into cement-based solidifying agents and polymer-based solidifying agents. Although the sludge improved by using a cement-based solidifying agent has strength,
There are problems such as the need for a curing period and the occurrence of dust pollution. Next, by using a polymeric solidifying agent, the improved sludge can be improved to a slump value of 1 cm or less without requiring a curing period, but the improved soil contains acrylamide and lead in excess of the regulated value. May be done. In addition, since no strength is exhibited, the polymer may be decomposed by ultraviolet rays or the like and re-mudged.
【０００３】[0003]
【発明が解決しようとする課題】今回開発した固化剤
は、セメント系固化剤と高分子系固化剤の問題点を解決
し、長所のみ複合させた全く新しい固化剤である。その
特徴としては下記の通りである。 （１）セメント系固化剤に比べ１／２〜１／１０の添加
量で必要強度を発現させることが可能である。 （２）高分子系固化剤と同様に養生期間を必要とせずに
スランプ値が１ｃｍ以下までに改良される。 （３）アクリルアミド、及び鉛等の有害物質は一切含有
しない。 （４）顆粒状であるため、粉塵公害は発生しない。The solidifying agent developed this time is an entirely new solidifying agent which solves the problems of the cement type solidifying agent and the polymer type solidifying agent and combines only the advantages. The features are as follows. (1) The required strength can be developed with an addition amount of 1/2 to 1/10 as compared with the cement-based solidifying agent. (2) The slump value is improved to 1 cm or less without requiring a curing period similarly to the polymer-based solidifying agent. (3) Contains no harmful substances such as acrylamide and lead. (4) Dust pollution does not occur because it is granular.
【０００４】本発明の要旨とするところは、石油ボーリ
ング等の切削時に使用するアクリル酸共重合体で、
（１）アルカリ域であってもアンモニア臭を発生させ
ず、あらゆるｐＨ領域で機能すること、（２）Ｃａ２＋
に対して高いキレート効果があり、Ｃａ２＋と接触して
もゲル化しないこと、（３）汚泥中の間隙水と接触する
ことで、間隙水をゲル状に増粘させることができること
の各特性を備えたポリマーを、普通セメント、トルマリ
ン及びシリカヒュームを一定の配合でブレンドした粉体
に練り込む事で、ポリマーでコーティングされた顆粒を
固化剤として使用し、該固化剤で汚泥を改良することで
建設汚泥を盛土するなどにリサイクル可能な物性まで改
良することを可能ならしめたことを特徴とする建設汚泥
の処理法。[0004] The gist of the present invention is an acrylic acid copolymer used for cutting such as petroleum boring.
(1) It does not generate an ammonia odor even in an alkaline range, and functions in any pH range. (2) Ca2 +
Has a high chelating effect on water, does not gel when it comes into contact with Ca2 +, and (3) makes it possible to thicken pore water into a gel by contacting pore water in sludge. The kneaded polymer is kneaded into a powder blended with ordinary cement, tourmaline and silica fume at a certain ratio, and the granules coated with the polymer are used as a solidifying agent to improve the sludge with the solidifying agent. A method for treating construction sludge, characterized in that it is possible to improve recyclable physical properties such as embankment of construction sludge.
【０００５】上記特徴を持つ固化剤とは、石油ボーリン
グ等の切削時に使用するアクリル酸共重合体で、ポリマ
ー（表１に物性を記す）を、普通セメント、トルマリン
（表２に物性を記す）及び、シリカヒューム（表３に物
性を記す）を一定の配合でブレンドした粉体に練り込む
事で、ポリマーコーティングされた顆粒を固化剤として
使用する。[0005] The solidifying agent having the above characteristics is an acrylic acid copolymer used for cutting such as petroleum boring. Further, polymer-coated granules are used as a solidifying agent by kneading silica fume (the physical properties of which are described in Table 3) into a powder blended at a certain ratio.
【０００６】[0006]
【表１】 [Table 1]
【０００７】[0007]
【表２】 [Table 2]
【０００８】[0008]
【表３】 [Table 3]
【０００９】[0009]
【００１０】（評価実験）本固化剤とセメント系固化
剤、及び高分子系固化剤を同一建設汚泥（表４）に対し
て添加して行き、混練５分後にフロー試験（ＪＩＳ Ｒ
５２０１）にて性状を測定し、次に改良汚泥をφ５０
ｍｍ×ｈ１００ｍｍの型枠に振動を加えて密に充填し、
所定の養生方法にて所定材令まで養生後、型枠内より取
出して円筒形供試体を成形し、一軸圧縮強度（ＪＩＳ
Ａ １２１６）にて固化強度を測定した。（混練機はケ
ンミックスミキサーを使用し、攪拌回転数は１１０ｒｐ
ｍで混練を行った。）実験結果を表５に記す。(Evaluation Experiment) The solidifying agent, cement-based solidifying agent, and polymer-based solidifying agent were added to the same construction sludge (Table 4), and after 5 minutes of kneading, a flow test (JIS R)
5201) to measure the properties, and then improve the sludge into φ50
Vibration is applied to a mold of 100 mm x 100 mm to densely fill,
After curing to the prescribed material age by the prescribed curing method, it is taken out from the mold to form a cylindrical specimen, and has a uniaxial compressive strength (JIS
A 1216), the solidification strength was measured. (The kneading machine uses a Kenmix mixer, and the stirring rotation speed is 110 rpm.
k was kneaded. Table 5 shows the experimental results.
【００１１】[0011]
【表４】 [Table 4]
【００１２】[0012]
【表５】 [Table 5]
【００１３】この実験結果から本固化剤は、高分子系固
化剤と同等の即効性を持ちながら、セメント系固化剤と
同等の強度を発現する事が解る。又、本固化剤の添加量
は高分子系固化剤に比べると２．５倍には成るが、セメ
ント系固化剤と比べると１／６に収まっている。From the experimental results, it can be understood that the solidifying agent of the present invention has the same immediate effect as the polymer-based solidifying agent, but exhibits the same strength as the cement-based solidifying agent. Further, the amount of the solidifying agent added is 2.5 times as large as that of the polymer-based solidifying agent, but is 1/6 of that of the cement-based solidifying agent.
【００１４】[0014]
【発明の効果】本固化剤で汚泥を改良する事で、建設汚
泥を盛土等にリサイクル可能な物性まで改良する事が可
能であり、又、その工程が現場内で特別な設備を必要と
せずに簡単に行う事ができる。建設汚泥をリサイクルす
るには、表５の実験結果からセメント系固化剤を使用し
なければならない、そのセメント系固化剤の特性を持ち
ながら、添加量がセメント系固化剤に比べ１／６に収ま
る事で物流費及び、設備費の低廉化が実現できる。本固
化剤の薬剤費は高分子系固化剤の約１／８であり、セメ
ント系固化剤の約７倍で流通可能な為、市場性は十分に
あると推測される。By improving sludge with the solidifying agent, it is possible to improve construction sludge to physical properties that can be recycled for embankment and the like, and the process does not require special equipment on site. Can be done easily. In order to recycle construction sludge, a cement-based solidifying agent must be used based on the experimental results in Table 5. The amount of addition is 1/6 of that of the cement-based solidifying agent while having the properties of the cement-based solidifying agent. As a result, the cost of distribution and equipment can be reduced. The chemical cost of this solidifying agent is about 1/8 of that of the polymer solidifying agent, and it can be distributed at about 7 times that of the cement solidifying agent. Therefore, it is estimated that the marketability is sufficient.
Claims (1)
リル酸共重合体で、（１）アルカリ域であってもアンモ
ニア臭を発生させず、あらゆるｐＨ領域で機能するこ
と、（２）Ｃａ２＋に対して高いキレート効果があり、
Ｃａ２＋と接触してもゲル化しないこと、（３）汚泥中
の間隙水と接触することで、間隙水をゲル状に増粘させ
ることができることの各特性を備えたポリマーを、普通
セメント、トルマリン及びシリカヒュームを一定の配合
でブレンドした粉体に練り込む事で、ポリマーでコーテ
ィングされた顆粒を固化剤として使用し、該固化剤で汚
泥を改良することで建設汚泥を盛土するなどにリサイク
ル可能な物性まで改良することを可能ならしめたことを
特徴とする建設汚泥の処理法。 (1) An acrylic acid copolymer used for cutting such as petroleum boring.
Function in all pH ranges without near odor
And (2) a high chelating effect on Ca2 +,
Not gelled even when in contact with Ca2 +, (3) in sludge
Contact with the pore water to thicken the pore water into gel
By kneading a polymer with each characteristic of being able to be blended into a powder blended with ordinary cement, tourmaline and silica fume at a certain ratio, the polymer-coated granules are used as a solidifying agent, and the solidification is performed. treatment of construction sludge, characterized in that tighten if possible to improve the construction sludge by improving the sludge to recyclable physical properties such as embankments in agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10044381A JP3057050B2 (en) | 1998-02-10 | 1998-02-10 | Construction sludge treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10044381A JP3057050B2 (en) | 1998-02-10 | 1998-02-10 | Construction sludge treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11226598A JPH11226598A (en) | 1999-08-24 |
| JP3057050B2 true JP3057050B2 (en) | 2000-06-26 |
Family
ID=12689938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10044381A Expired - Fee Related JP3057050B2 (en) | 1998-02-10 | 1998-02-10 | Construction sludge treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3057050B2 (en) |
-
1998
- 1998-02-10 JP JP10044381A patent/JP3057050B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11226598A (en) | 1999-08-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
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| R250 | Receipt of annual fees |
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| R250 | Receipt of annual fees |
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| LAPS | Cancellation because of no payment of annual fees |