JPH10156394A - Treatment of sludge - Google Patents
Treatment of sludgeInfo
- Publication number
- JPH10156394A JPH10156394A JP33889396A JP33889396A JPH10156394A JP H10156394 A JPH10156394 A JP H10156394A JP 33889396 A JP33889396 A JP 33889396A JP 33889396 A JP33889396 A JP 33889396A JP H10156394 A JPH10156394 A JP H10156394A
- Authority
- JP
- Japan
- Prior art keywords
- water
- sludge
- water content
- solidifying agent
- kneading
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000004898 kneading Methods 0.000 claims abstract description 7
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 6
- 239000000292 calcium oxide Substances 0.000 claims abstract description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000008117 stearic acid Substances 0.000 claims abstract description 6
- 239000008187 granular material Substances 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 6
- 235000012255 calcium oxide Nutrition 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 8
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、高含水率の汚泥
水の処理方法に関する。The present invention relates to a method for treating sludge water having a high water content.
【０００２】[0002]
【従来の技術】従来、高含水率の汚泥水の処理方法とし
ては、汚泥水を水分と固形物とに分離し、水分は別途処
理して排出し、固形物は固めてから別途処理する方法が
採用されている。2. Description of the Related Art Conventionally, as a method of treating sludge water having a high water content, a method of separating sludge water into water and solids, separately treating and discharging the water, and solidifying solids and then treating them separately. Has been adopted.
【０００３】上記固形物と水分との分離は、既知の凝集
剤や固化剤を用いて、含有浮遊物を含め凝集させ沈澱さ
せるという方法が一般的であり、その後、上水（澄み
水）は元へ放流し、沈澱物（汚泥）は水分を抜き固化処
理したのち、処理するのが通常であった。[0003] The separation of the above-mentioned solid matter and water is generally carried out by using a known flocculant or solidifying agent to flocculate and precipitate the suspended solids contained therein. Usually, the sediment (sludge) was drained, solidified, and then treated.
【０００４】沈澱、固化させた固形物は、産業廃棄物扱
いでそのまま処分場にて埋め立て用に用いて処分をする
か、又は焼却処分をしてそのために出来た灰分も結局は
埋め立てているのが現状であった。[0004] Precipitated and solidified solids are treated as industrial waste and used for landfill at a disposal site as they are, or they are disposed of by incineration, and ash produced for that purpose is eventually landfilled. Was the current situation.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
ような従来の処理方法では、単に汚泥水の水分を脱水し
たにすぎず、雨が降ったり水中に戻せば、たちまち元の
状態に戻るので、重金属などの産業廃棄物を含む汚泥水
の場合、分離した固形成分をそのまま埋め立て用に用い
たり、焼却処理をすることは土壌や水質汚染問題が生じ
ることになり、環境上問題がある。However, according to the conventional treatment method as described above, the water in the sludge water is merely dehydrated, and if it is rained or returned to the water, it immediately returns to its original state. In the case of sludge water containing industrial wastes such as heavy metals, using the separated solid components as they are for landfilling or incineration causes soil and water pollution problems, and is environmentally problematic.
【０００６】また、法律上も産業廃棄物の海洋投棄は不
可能であり、埋め立て処分も許認可を受けた専業者又は
発生源あるいは企業自らの手で、安全に管理し処理・処
分しなければならないのが現状である。Further, it is legally impossible to dump industrial waste into the ocean, and landfill disposal must be safely managed, treated and disposed of by a licensed professional or source or by the company itself. is the current situation.
【０００７】特に、処理しようとする汚泥水が高含水率
の場合、処理がわずらわしい。In particular, when the sludge water to be treated has a high water content, the treatment is troublesome.
【０００８】そこで、この発明の課題は、高含水率の汚
泥水を簡単な処理方法により処理することができ、また
環境に影響を与えないような物に変化させるようにした
処理方法を提供することにある。Accordingly, an object of the present invention is to provide a treatment method capable of treating sludge water having a high water content by a simple treatment method and changing the sludge water to a substance which does not affect the environment. It is in.
【０００９】[0009]
【課題を解決するための手段】上記の課題を解決するた
めに、この発明は、高含水率の汚泥水にその汚泥水と同
等量或いはそれ以上の量のステアリン酸で被覆された生
石灰を主原料とする固化剤を入れて共に混練り、攪拌を
行ないながら、その時に発生する高温の反応熱を利用し
て水分を蒸発させながら、続いて投入する上記と同様の
固化剤を連鎖反応的に発熱させることで以後投入する固
化剤の量をセーブしながら水分を蒸発させ、混練、攪拌
の続行により微小粒状の顆粒状造粒物を得ることを特徴
とする汚泥水の処理方法を採用する。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a method of producing a high-moisture content sludge water containing quicklime coated with stearic acid in an amount equal to or greater than that of the sludge water. Add the solidifying agent as a raw material, knead them together, stir, evaporate the water using the high-temperature reaction heat generated at that time, and add the same solidifying agent as described above in a chain reaction. The method of treating sludge water is characterized by evaporating water while heating to save the amount of the solidifying agent to be charged thereafter, and obtaining fine granular granules by continuing kneading and stirring.
【００１０】[0010]
【発明の実施の形態】以下、この発明の実施の形態を説
明する。Embodiments of the present invention will be described below.
【００１１】まず、槽内に高含水率の汚泥水と共に汚泥
水と同量或いはそれ以上の量のステアリン酸で被覆され
た生石灰を主原料とする固化剤（例えば商品名：ＤＣ
Ｒ）を入れて、高速回転の混練、攪拌機などを用いて混
練、攪拌を行ないながら、固化剤中の生石灰と汚泥水と
が反応して発生する高温の反応熱を利用して汚泥水の水
分を蒸発させながら、続いて投入するステアリン酸で被
覆された生石灰を主原料とする固化剤の成分中のステア
リン（脂肪）酸を連鎖反応的に発熱させることで水分の
蒸発を続行し、以後投入する上記と同様の固化剤の量を
セーブすると共に、混練（すり潰しもかねる）・攪拌の
続行によって水分を蒸発させる。First, a solidifying agent containing, as a main material, a quicklime coated with a stearic acid in an amount equal to or greater than that of the sludge water together with a high water content sludge water in a tank (for example, trade name: DC
R), high-speed kneading, kneading and stirring using a stirrer, etc., while utilizing the high-temperature reaction heat generated by the reaction between the quicklime and sludge water in the solidifying agent, the water content of the sludge water is increased. The evaporation of water is continued by evaporating the stearic acid (fatty acid) in the solidifying agent component mainly composed of quick lime coated with stearic acid, which is subsequently added, to generate heat in a chain reaction. The same amount of the solidifying agent as described above is saved, and the water is evaporated by continuing the kneading (which may be crushed) and stirring.
【００１２】すると、上記の反応によって水分の無くな
った固形物は、固化剤の作用によって微小単位で化学反
応による分散、即ち、汚泥の本来持っている特性・性質
を微小単位の顆粒状に包み込み、微小粒を作る。[0012] Then, the solid matter free of moisture by the above-mentioned reaction is dispersed by a chemical reaction in minute units by the action of a solidifying agent, that is, the inherent properties and properties of sludge are wrapped in a granular form of minute units, Make fine grains.
【００１３】更に包み込まれた微小粒状の処理汚泥物を
攪拌し続けると、数ミリから数センチ単位の顆粒に成長
し図１で示す顆粒状造粒物１を得る事ができる。Further, when the wrapped fine granular sludge is continuously stirred, it grows into granules of several millimeters to several centimeters, and the granular granules 1 shown in FIG. 1 can be obtained.
【００１４】処理された顆粒状造粒物１は、元となる汚
泥が有機、無機、重金属類等の種類に関係なく、固化剤
によって汚染物質が元来持っていた特性、性質を、固化
剤との化学反応により外面に生じた皮膜２により微小単
位の顆粒状に包み込まれた状態で固化し、その後に水に
浸漬しても皮膜２により汚泥成分３が溶出しないので、
雨水等による内部成分の融出が生せず、且つ、内部水分
が無いので転圧にも強い性質に変わる。[0014] The treated granular granulated material 1 has the same properties and properties that the contaminants originally possessed by the solidifying agent, regardless of the type of organic sludge or inorganic or heavy metals. Solidified in a state of being wrapped in minute units of granules by the film 2 formed on the outer surface due to the chemical reaction with, and then the sludge component 3 is not eluted by the film 2 even if immersed in water.
The internal components do not melt due to rainwater and the like, and since there is no internal moisture, the property changes to a property that is strong against compaction.
【００１５】これら造粒物の内部成分が融出しなくなっ
た性質変化を利用して、埋め立て地で埋め戻しに再利用
しても、浚渫した元の位置に戻しても、二次汚染の発生
が起こらず、環境に影響を与えないことになる。[0015] By utilizing the property change in which the internal components of these granules are no longer melted, secondary pollution occurs even if the granules are reused for backfilling at a landfill site or returned to the original position where they were dredged. It will not happen and will not affect the environment.
【００１６】また、上記以外に例えばブロックを製造す
るセメントなどの自硬性材料の増量用骨材として用いる
こともある。[0016] In addition to the above, for example, it may be used as an aggregate for increasing the amount of a self-hardening material such as cement for producing a block.
【００１７】なお、上記汚泥水の水分蒸発と、水分の無
くなった固形物からの微小粒を作る工程を別工程にする
こともある。[0017] The step of evaporating the water of the sludge water and the step of forming the fine particles from the solid matter free of the water may be different steps.
【００１８】[0018]
【発明の効果】以上述べたように、この発明によれば、
高含水率の汚泥水が有機、無機、重金属類に関係なく固
化剤と混練・攪拌して水分を蒸発させ、また初期に汚泥
水と略同量の固化剤を、次いで水分の残留に応じて固化
剤を加えて、固化剤の投入量をセーブしながら水分を無
くすると共に水分の無い汚泥物を造粒するため、汚泥水
の処理、すなわち手間のかかる上水と沈澱物の分離が不
要になると共に、分離した上水の放流に適合する再処理
などが不要になる。As described above, according to the present invention,
Regardless of organic, inorganic or heavy metals, high water content sludge water is kneaded and stirred with a solidifying agent to evaporate water.Also, the same amount of solidifying agent as sludge water is initially used, Adding a solidifying agent to eliminate the water while granulating the sludge without moisture while saving the amount of solidifying agent added, eliminating the need for sludge treatment, that is, time-consuming separation of sediment from clean water. At the same time, reprocessing or the like adapted to the discharge of the separated clean water becomes unnecessary.
【００１９】また、顆粒状処理汚泥は、水に浸漬しても
内部成分が融出することなく、汚泥のリサイクルとして
種々の用途に再利用することもできる。Further, the granular sludge can be reused for various uses as sludge recycling without the internal components being melted even when immersed in water.
【図１】この発明の処理方法によって得られた顆粒状造
粒物の拡大断面図である。FIG. 1 is an enlarged cross-sectional view of a granulated product obtained by a treatment method of the present invention.
１ 顆粒状造粒物 ２ 皮膜 ３ 汚泥成分 1 Granular granules 2 Coating 3 Sludge component
Claims (1)
或いはそれ以上の量のステアリン酸で被覆された生石灰
を主原料とする固化剤を入れて共に混練り、攪拌を行な
いながら、その時に発生する高温の反応熱を利用して水
分を蒸発させながら、続いて投入する上記と同様の固化
剤を連鎖反応的に発熱させることで以後投入する固化剤
の量をセーブしながら水分を蒸発させ、混練、攪拌の続
行により微小粒状の顆粒状造粒物を得ることを特徴とす
る汚泥水の処理方法。1. A sludge water having a high water content, a solidifying agent mainly composed of quicklime coated with stearic acid in an amount equal to or greater than that of the sludge water is added, kneaded together, and stirred. While evaporating water by using the high-temperature reaction heat generated at that time, successively generating the same solidifying agent as described above in a chain reaction to generate heat, thereby saving the amount of the solidifying agent to be subsequently added while saving water. A method for treating sludge water, characterized by obtaining fine granular granules by continuing evaporation, kneading and stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33889396A JPH10156394A (en) | 1996-12-03 | 1996-12-03 | Treatment of sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33889396A JPH10156394A (en) | 1996-12-03 | 1996-12-03 | Treatment of sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10156394A true JPH10156394A (en) | 1998-06-16 |
Family
ID=18322355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33889396A Pending JPH10156394A (en) | 1996-12-03 | 1996-12-03 | Treatment of sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10156394A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008006434A (en) * | 2006-06-02 | 2008-01-17 | Excelsior Inc | Manure treatment agent and manure treatment method using the same |
| CN104529101A (en) * | 2014-11-28 | 2015-04-22 | 北京交通大学 | City sludge heavy metal passivation method by using hydroxyapatite as passivating agent |
-
1996
- 1996-12-03 JP JP33889396A patent/JPH10156394A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008006434A (en) * | 2006-06-02 | 2008-01-17 | Excelsior Inc | Manure treatment agent and manure treatment method using the same |
| CN104529101A (en) * | 2014-11-28 | 2015-04-22 | 北京交通大学 | City sludge heavy metal passivation method by using hydroxyapatite as passivating agent |
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