JP3242674B2 - Mud and mud waste treatment equipment - Google Patents
Mud and mud waste treatment equipmentInfo
- Publication number
- JP3242674B2 JP3242674B2 JP11374291A JP11374291A JP3242674B2 JP 3242674 B2 JP3242674 B2 JP 3242674B2 JP 11374291 A JP11374291 A JP 11374291A JP 11374291 A JP11374291 A JP 11374291A JP 3242674 B2 JP3242674 B2 JP 3242674B2
- Authority
- JP
- Japan
- Prior art keywords
- mud
- water
- fuel
- combustion
- muddy water
- 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
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、泥水・泥土類の廃棄処
理装置に関する。更に詳述すると、本発明は地下下水道
や地下鉄のシールド掘削工事等によって発生する泥水・
泥土類を均質化して自燃用燃料を混入する混練設備を備
え、有効利用できるように処理する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for disposing of muddy water and mud. More specifically, the present invention relates to muddy water generated by underground sewerage or subway shield excavation work.
The present invention relates to a device which includes a kneading facility for homogenizing mud and mixing fuel for self-combustion, and treating the mud for effective use.
【０００２】[0002]
【従来の技術】建設工事等に伴って発生する泥水・泥土
類は産業廃棄物として適正に処理しなければならない。
例えば、地下鉄のシールド掘削工事において発生する泥
水・泥土は５０〜６０％以上の水分を含んでいることか
ら、脱水・固化処理を施して廃棄処分しなければならな
い。2. Description of the Related Art Muddy water and mud generated by construction work and the like must be properly treated as industrial waste.
For example, muddy water and mud generated in subway shield excavation work contain 50 to 60% or more of water, and therefore must be subjected to dehydration / solidification treatment and disposed of.
【０００３】そこで、従来は、フィルタープレス等を利
用した機械的脱水処理と凝固剤を使用した固化処理を併
用することによって、ある程度の強さ（例えば圧縮強度
０．５ｋｇ／ｃｍ2 、含水率２０〜３０％）を有する粒
状物に安定固化させてから埋立て地に埋め立てている。Conventionally, a certain degree of strength (for example, a compressive strength of 0.5 kg / cm 2 and a water content of 20%) has been conventionally used by combining mechanical dehydration using a filter press or the like and solidification using a coagulant. (~ 30%), and solidified into a granular material having the same content, and then landfilled.
【０００４】例えば、建設汚泥の場合、泥水・泥土を分
級機にかけて砂利等の固形分と原水（泥水・泥土）を分
離した後、沈澱槽において原水と凝集剤を混合撹拌させ
て固形分を沈降させ、上澄水を分離して中和・調整後放
流する一方、沈降した濃縮泥水を造塊槽において高分子
凝集剤の添加によって球状の塊り（ペレット）に造塊
し、更に脱水機において薬品による凝集作用と回転力に
より固形分を更に大きな塊りに造塊してから、あるいは
脱水ケーキのまま、海洋に投棄したり、埋立て地に埋立
てている。For example, in the case of construction sludge, muddy water and mud are separated.
Classifier to separate solids such as gravel and raw water (mud water / mud).
After separation, the raw water and flocculant are mixed and stirred in the settling tank.
To separate the supernatant, neutralize, adjust, and release.
While flowing, the settled concentrated mudIngotPolymer in tank
By adding coagulant, sphericalLump(Pellet)Ingot
In addition, in the dehydrator, the coagulation action and rotation
More solidsLump into lumpOr after
Dispose of the dehydrated cake in the ocean or landfill in a landfill
I am.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、ただ廃
棄するために多大のコストをかけて安定固化させること
は無駄である。しかも、近年、地下構造物が急速に増大
しているため、泥水・泥土の発生が埋立てや投棄だけで
はまかないきれない程に増大することが予想されること
から、新たな廃棄処理が望まれる。However, it is useless to stabilize and solidify it at a great cost just to discard it. In addition, underground structures are increasing rapidly in recent years, and the generation of muddy water and mud is expected to increase beyond landfill and dumping alone, so new disposal is desired. .
【０００６】本発明は、従来廃棄処理に手間がかかって
いた泥水・泥土類の安価でかつ有効な廃棄処理装置を提
供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide an inexpensive and effective disposal system for muddy water and mud, which has conventionally been troublesome.
【０００７】[0007]
【課題を解決するための手段】かかる目的を達成するた
めに、本発明の泥水・泥土類の廃棄処理装置は、泥水・
泥土類を凝集剤と共にシックナーで攪拌して水分調整
し、その後前記シックナーから供給される濃縮泥水の固
形量に応じた適量の自燃用燃料を添加して均質に混練す
る混練設備と、自燃用燃料を混練した原料を機械的に脱
水して更に適当な水分に調整した後造塊する成形設備
と、その造塊原料を含有する自燃用燃料の燃焼によって
焼成し無機質系の人工軽量骨材とする燃焼設備とから構
成され、ミキサーと成形設備との間に混練原料の分離を
防ぐと共に流動性を維持し、上澄みの余剰水を所要に応
じ排出する脱水アジテータを備えている。 SUMMARY OF THE INVENTION In order to achieve the above object, a wastewater treatment system for muddy water or mud according to the present invention is provided.
Kneading equipment for mixing the mud with a coagulant with a thickener to adjust the water content, then adding an appropriate amount of self-fuel for fuel in accordance with the solid content of the concentrated mud supplied from the thickener, and uniformly kneading the fuel; A molding facility for mechanically dewatering the kneaded raw material, adjusting the water content to an appropriate level, and then forming a lump, and firing the fuel for self-combustion containing the lump raw material to produce an inorganic artificial lightweight aggregate. It consists of combustion equipment and separates the kneaded raw materials between the mixer and the molding equipment.
And maintain fluidity, and remove excess supernatant water as required.
It has a dehydrating agitator that discharges the same.
【０００８】[0008]
【作用】したがって、シックナーにおいて泥水・泥土類
の固形分と水分とが分離され、水分調整された濃縮泥水
としてミキサーに供給される。そして、ミキサーにおい
て濃縮泥水の固形に応じた適量の自燃用燃料が添加され
て水分調整が行なわれながら均質に混練される。そし
て、この混練原料は成形設備で固形化されて粒体とされ
た後、燃焼設備において自燃用燃料のむらのない燃焼熱
によって無機質成分を焼結させ、粒状物同士の融着や目
詰りを起こすことなく無機質系の人工軽量骨材に焼成す
る。Therefore, the solid content of the muddy water and mud is separated from the water in the thickener and supplied to the mixer as a water-concentrated concentrated water. Then, an appropriate amount of fuel for self-combustion according to the solid content of the concentrated muddy water is added in the mixer, and the mixture is uniformly kneaded while adjusting the water content. Then, after the kneaded raw material is solidified into granules in the molding facility, the inorganic component is sintered by the uniform combustion heat of the fuel for self-combustion in the combustion facility, causing fusion and clogging of the granular materials. It sinters to an inorganic artificial lightweight aggregate without any.
【０００９】[0009]
【実施例】以下、本発明の構成を図面に示す実施例に基
づいて詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below in detail with reference to the embodiments shown in the drawings.
【００１０】図１に本発明の泥水・泥土類の廃棄処理装
置の一実施例を示す。この廃棄処理装置は、泥水泥土類
を均質化して自燃用燃料を混入する混練設備１と、建設
残土のような比較的水分の低い土類を処理に適合させる
ための設備１０と、その混練原料を所定の水分の固形物
に成形する設備２０と、それを別途燃料を用いずに焼成
する設備３０と、焼成品を大きさ別に選別して貯留する
設備４０とから成る。FIG. 1 shows an embodiment of a muddy water / muddy waste disposal apparatus according to the present invention. This waste treatment apparatus includes a kneading facility 1 for homogenizing muddy mud and mixing fuel for self-combustion, a facility 10 for adapting relatively low-moisture soil such as construction residual soil to treatment, and a kneading raw material for the same. The apparatus 20 comprises: a facility 20 for forming a solid product having a predetermined moisture content; a facility 30 for separately firing the fuel without using fuel; and a facility 40 for selecting and storing the baked products by size.
【００１１】混練設備１は泥水６１を受入れ水分調整を
行なうシックナー２と、このシックナー２での水分調整
によって濃縮された泥水６１ｂを圧送するスラリーポン
プ３と、送泥管５にバイパス管５ａを介して接続された
泥水濃度検知手段６と、自燃用燃料６３を混入し均質に
混練するミキサー７と、自燃用燃料を混練した濃縮泥水
（以下混練原料という）を二次沈降させると共に沈澱し
た混練原料６４の流動性を維持しつつ上澄水６５を排除
する脱水アジテータ８から主に成る。尚、泥水６１の状
態によっては、脱水アジテータ８を不要としミキサー７
を経た混練原料６４を直接次段の成形設備２０に供給す
るようにしても良い。また、ミキサー７はバッチ式でも
連続式でも良く、シックナー２の処理量に応じて適宜数
用いられる。シックナー２には泥水６１と共に適量の凝
集剤６２が添加される。The kneading equipment 1 receives a muddy water 61 and adjusts the water content, a slurry pump 3 for pressure-feeding the muddy water 61b concentrated by the water content adjustment by the thickener 2, and a mud feed pipe 5 via a bypass pipe 5a. And a mixer 7 for mixing and homogeneously kneading the fuel 63 for self-combustion, and a secondary sedimentation of the concentrated muddy fluid (hereinafter referred to as “kneaded raw material”) kneaded with the fuel for self-combustion, and the kneaded raw material precipitated. It consists mainly of a dewatering agitator 8 that excludes the supernatant water 65 while maintaining the fluidity of the water 64. Depending on the state of the muddy water 61, the dehydrating agitator 8 is not required and the mixer 7
The kneading raw material 64 having passed through may be supplied directly to the molding equipment 20 at the next stage. The number of the mixers 7 may be a batch type or a continuous type, and an appropriate number is used according to the throughput of the thickener 2. An appropriate amount of a flocculant 62 is added to the thickener 2 together with the muddy water 61.
【００１２】建設残土を処理する設備１０は、グリズリ
ー１１と、磁力選別機１２と、残土置場１３と、水分を
補給しつつ建設残土を粉砕して一定含水率のスラリーと
する湿式粉砕ミル１４及び湿式ミルによって粉砕された
建設残土のスラリーを混練設備１の送泥管５に圧送する
高圧ポンプ１５とから成る。The facility 10 for treating construction residual soil includes a grizzly 11, a magnetic separator 12, a residual soil storage place 13, a wet grinding mill 14 for crushing the construction residual soil while supplying water to obtain a slurry having a constant moisture content, and And a high-pressure pump 15 for pressure-feeding the slurry of the remaining construction soil pulverized by the wet mill to the mud pipe 5 of the kneading equipment 1.
【００１３】成形設備２０は、機械的脱水処理を施すフ
ィルタープレス２１と、このフィルタープレス２１に脱
水アジテータ８に溜った混練原料６４を送る高圧ポンプ
２２と、ケーキ受け２３と、水分調整のために添加する
無機質微粒子を貯留するサイロ２４と、ケーキ２９と無
機質微粒子を混合するニーダー２５と、ニーダー２５で
混練されたケーキを所定の大きさの粒に成形する押出し
成形機・カッター２６と、成形粒を乾燥させるバンドド
ライヤー２７と、ふるい２８から成る。バンドドライヤ
等の乾燥装置２７は後工程の焼成用キルン３１の排ガス
の熱を利用することが好ましい。例えば、焼成用キルン
３１の排ガスをバンドドライヤ２７に直接導入したり、
バグフィルター３２とサイクロン３３を経て清浄にした
キルン排ガスを導入するようにしている。The molding equipment 20 includes a filter press 21 for performing a mechanical dehydration treatment, a high-pressure pump 22 for feeding the kneaded raw material 64 stored in the dehydration agitator 8 to the filter press 21, a cake receiver 23, and a A silo 24 for storing the inorganic fine particles to be added; a kneader 25 for mixing the cake 29 with the inorganic fine particles; an extruder / cutter 26 for forming the cake kneaded by the kneader 25 into particles of a predetermined size; And a sieve 28. It is preferable that the drying device 27 such as a band dryer uses the heat of the exhaust gas of the kiln 31 for firing in a later step. For example, kilns for firing
31 exhaust gas is directly introduced into the band dryer 27,
The kiln exhaust gas cleaned through the bag filter 32 and the cyclone 33 is introduced.
【００１４】焼成設備３０としては、例えば、泥水・泥
土類の粒子を積層し、下層に着火して自然通風によって
下から上へ焼成を進める立型キルンや、エンドレスのベ
ルト上にグリーンペレットを載置して、強制通風によっ
て焼成するシンターバンド等の使用が好ましい。この焼
成は１０００℃〜１２００℃で行なわれる。The baking equipment 30 includes, for example, a vertical kiln in which particles of muddy water and mud are stacked and ignited in the lower layer to perform baking from below to above by natural ventilation, or green pellets are placed on an endless belt. It is preferable to use a sinter band or the like which is placed and fired by forced ventilation. This firing is performed at 1000 ° C to 1200 ° C.
【００１５】貯留設備４０としては、振動ふるい４１と
区画された製品置場４２から成る。The storage facility 40 comprises a vibrating screen 41 and a partitioned product storage area 42.
【００１６】ここで、処理対象となる泥水・泥土類とし
ては、 地下下水道・地下鉄等シールド掘削工事、地下連壁、
アースオーガ杭工事等によって発生する泥水・泥土、上
水道無機質汚泥等のその他の汚泥、 都市建設工事によって発生する根伐土等の建設残土、 ダム堆積土、河川及び湖沼浚渫泥土等の浚渫土、 選炭ボタ、選炭スラッジ、ＣＯＭ残滓等の石炭廃棄
物、 選鉱テーリング、精錬スラグ廃棄物等の鉱業精錬廃棄
物、 濾過助剤廃棄物、 等が挙げられる。Here, the muddy water and muddy soil to be treated include underground sewerage and subway shield excavation work, underground connecting walls,
Muddy water and mud generated by earth auger pile construction, other sludge such as mineral water sludge from waterworks, construction residual soil such as root cuts generated by urban construction work, dredged soil such as dam sediment, river and lake dredged mud, coal preparation Coal waste such as waste water, coal preparation sludge, and COM residue; mineral processing tailing; mining refining waste such as refining slag waste; and filter aid waste.
【００１７】また、この泥水泥土類を原料として人工骨
材を製造する場合には、副原料として、水分調整材と
しての石炭灰（フライアッシュ、炉床アッシュ）や下水
道汚泥焼却灰等の焼却灰、都市ごみ焼却灰、燃料兼造
骨材料としての下水道汚泥等の汚泥、の使用が好まし
い。In the case where an artificial aggregate is produced using the muddy mud as a raw material, incinerated ash such as coal ash (fly ash, hearth ash) or sewage sludge incinerated ash as a moisture adjusting material is used as an auxiliary material. , municipal waste incineration ash, sludge sewage sludge as fuel and osteoblastic material, the use of preferred.
【００１８】この廃棄処理システムによると、泥水・泥
土類は次のようにして処理される。According to this waste treatment system, muddy water and mud are treated as follows.
【００１９】まず、混練設備１において泥土を含む泥水
６１は、シックナー２に貯留されるる。この泥水６１は
粒度によって異なるが、通常、泥水濃度は５％程度以下
である。そして、適当な凝集剤例えば、有機アクリルア
マイト系、シアニド系などの焼成時に分解して多量の毒
性ガスを発生することのない凝集剤６２を添加し、モー
タ駆動の回転翼２ａによって撹拌される。そこで泥水６
１は、ある程度脱水されて５０〜７０％の含水率にまで
水分調製され、余剰水６１ａはシックナー２の外へ溢出
して排除される一方、凝集した濃縮泥水６１ｂは中央凹
部２ｂに集積し、スラリーポンプ３により取出されてミ
キサー７へ圧送される。First, the muddy water 61 containing mud in the kneading equipment 1 is stored in the thickener 2. The muddy water 61 varies depending on the particle size, but the muddy water concentration is usually about 5% or less. Then, an appropriate coagulant, for example, an organic acryl amite-based or cyanide-based coagulant 62 that does not decompose during firing and generates a large amount of toxic gas is added, and is stirred by the motor-driven rotary blade 2a. . So muddy 6
1 is dewatered to some extent and adjusted to a water content of 50 to 70%, and the excess water 61a overflows to the outside of the thickener 2 and is eliminated, while the concentrated concentrated muddy water 61b accumulates in the central recess 2b, It is taken out by the slurry pump 3 and sent to the mixer 7 under pressure.
【００２０】圧送途中の濃縮泥水はバイパス管５ａに設
けられたボーメ比重計などの泥水濃度検知手段６におい
てその濃度、即ち固形量が測定される。The concentration of the condensed mud during the pressure feeding is measured by a mud concentration detecting means 6 such as a Baume hydrometer provided in the bypass pipe 5a, that is, the solid content is measured.
【００２１】そして、ミキサー７では、前記検知手段６
で測定された水分又は比重から判定される濃縮泥水の固
形量に応じて適量の自燃用燃料６３が混入され撹拌され
る。撹拌は適度な水分下に良好に行われる。In the mixer 7, the detecting means 6
An appropriate amount of the fuel for self-combustion 63 is mixed and stirred according to the solid content of the concentrated muddy water determined from the water content or the specific gravity measured in the above. Stirring is performed well under moderate moisture.
【００２２】ここで、自燃用燃料としては、微粉炭、コ
ークス粉末、オイルコークス粉末、もみがら、おがく
ず、ジュートくず、バカス、泥炭、草炭、亜炭（若年
炭）、アルコール発酵廃棄物、石油精製時に残留するス
ラッジ等が挙げられ、コークス粉末、オイルコークス粉
末の使用が脱水効果の上で好ましい。この自燃用燃料
は、濃縮泥水・泥土類に対し乾燥重量比で２〜６％、好
ましくは３〜５％混入させる。泥水・泥土類の中に含ま
れる有機物は燃料として利用される。したがって、自燃
用燃料の添加量はスラリー中の有機物の量を考慮して決
定される。燃料分が少な過ぎると、焼成が不安定とな
り、軽量骨材の生成が不良となる。また、燃料分が多過
ぎると焼成炉中で融着（ブリッジ）や目詰りを起こして
焼成が不完全となる。泥水・泥土と自燃用燃料は撹拌に
よって完全に均質に混合される。このとき、泥水・泥土
は４０〜６０％の水分を含んでおり、撹拌によって均質
に混練される。Here, the fuel for self-combustion includes pulverized coal, coke powder, oil coke powder, rice husk, sawdust, jute waste, bacas, peat, peat, lignite (young coal), alcoholic fermentation waste, and oil refinery waste. Residual sludge and the like are mentioned, and the use of coke powder and oil coke powder is preferred from the viewpoint of dehydration effect. This fuel for self-combustion is mixed in a dry weight ratio of 2 to 6%, preferably 3 to 5% with respect to the concentrated muddy water or mud. Organic matter contained in muddy water and mud is used as fuel. Therefore, the amount of the fuel for self-combustion is determined in consideration of the amount of organic matter in the slurry. If the fuel content is too small, firing becomes unstable, and the production of lightweight aggregates becomes poor. On the other hand, if the fuel content is too large, fusion (bridge) or clogging occurs in the firing furnace, resulting in incomplete firing. The muddy water and mud and the fuel for self-combustion are completely homogeneously mixed by stirring. At this time, the muddy water or mud contains 40 to 60% of water, and is uniformly kneaded by stirring.
【００２３】また、場合によっては自燃用燃料と共に濾
過プレス助剤が投入される。ここで濾過プレス助剤は、
後工程の機械的脱水を補助して効果的なものとするため
のもので、２〜４０ｍｍのケイ藻土微粉、焼成パーライ
ト微粉、ふっ石（ゼオライト）微粉、大谷石微粉、コー
クス微粉等の使用が好ましい。In some cases, a filter press aid is added together with the fuel for self-combustion. Here, the filter press aid is
It is used to assist the mechanical dehydration in the subsequent process to make it effective. Use of diatomaceous earth fine powder of 2 to 40 mm, fired pearlite fine powder, fluorite (zeolite) fine powder, Otani stone fine powder, coke fine powder, etc. Is preferred.
【００２４】ミキサー７で自燃用燃料６３を含む均質に
混練された混練原料６４は、引き続き脱水アジテータ８
に送り込まれる。ここでモータ駆動の撹拌翼８ａにより
流動性を維持するとともに、比重の関係で上澄となる余
剰水６５は、フィルタプレス２１の負担を軽くするため
脱水アジテータ８の上部から抜き取られ、いったん貯水
槽５０に貯められる。The kneaded raw material 64 containing the fuel 63 for self-combustion and homogeneously kneaded by the mixer 7 is continuously mixed with the dehydrated agitator 8.
Sent to. Here, while the fluidity is maintained by the motor-driven agitating blades 8a, the excess water 65, which becomes supernatant due to the specific gravity, is withdrawn from the upper part of the dewatering agitator 8 to reduce the load on the filter press 21. Stored in 50.
【００２５】脱水アジテータ８において更に水分が調整
された混練原料６４は高圧ポンプ２２によってフィルタ
ープレス２１に圧送され、含水率２０〜４０％、好まし
くは２５〜３０％に機械的に脱水され、ケーキ受け２３
に集められる。このフィルタープレス２１による脱水
は、プレス時間や濾過プレス助剤によって異なるが、３
０〜４０％の含水率に止めてもかまわない。後工程にお
いて無機質微粒子の添加等によって２５〜３０％に水分
調整すれば足りる。The kneaded raw material 64 whose water content is further adjusted in the dehydrating agitator 8 is pumped to the filter press 21 by the high-pressure pump 22 and mechanically dehydrated to a water content of 20 to 40%, preferably 25 to 30%, and receives a cake. 23
Collected in. Dehydration by the filter press 21 varies depending on the press time and the filtration press aid,
The water content may be limited to 0 to 40%. It is sufficient to adjust the water content to 25 to 30% by adding inorganic fine particles in a subsequent step.
【００２６】フィルタープレス２１において脱水された
泥水・泥土類のケーキ２９は、充分に水分が下げられて
いない場合等には、必要に応じてニーダー２５に送ら
れ、無機質の微粒子例えば石炭灰等と混練して次工程の
押出し成形が可能な限り少ない水分まで含有平均水分を
下げる。そして、カッターを備える押出し成形機２６に
送られて、所定の大きさの塊りに造塊される。ここで、
所定の大きさとは、後工程の焼成に適した大きさで、例
えば５〜２０ｍｍの径である。一定の大きさの塊りに成
形された泥土類は更に強度を増すため等の必要に応じて
バンドドライヤ２７等を利用して水分を１０％程度に下
げる。The muddy water / muddy cake 29 dehydrated in the filter press 21 is sent to the kneader 25 as necessary when the water content is not sufficiently reduced, and is removed with inorganic fine particles such as coal ash. After kneading, the average moisture content is reduced to a level as low as possible for extrusion in the next step. Then, it is sent to an extruder 26 having a cutter, and is formed into a lump having a predetermined size. here,
The predetermined size is a size suitable for baking in a subsequent step, for example, a diameter of 5 to 20 mm. The mud formed into lumps of a certain size is reduced in water content to about 10% by using a band dryer 27 or the like as necessary to further increase the strength.
【００２７】バンドドライヤ２７において含水率１０％
程度に下げられた泥水・泥土類の粒子はふるい２８にか
けられ、更に大きさが整えられて焼成用キルン３１に搬
入される。The water content in the band dryer 27 is 10%.
The muddy water and mud particles reduced to a certain extent are passed through a sieve 28, further adjusted in size, and carried into a kiln 31 for firing.
【００２８】キルン３１では泥水・泥土類の固形中の自
燃用燃料及び有機質を燃焼させて、残留するＳｉＯ2 ，
Ａｌ2 Ｏ3 等の無機質成分を焼結させる。この焼成品の
性状は、例えば建設汚泥におが屑を自燃用燃料として混
合した場合には、見掛け比重１．２５、吸水率１４．５
％で軽量骨材として好適なものである。In the kiln 31, the fuel for self-combustion and the organic matter in the solid muddy water and mud are burned, and the remaining SiO 2 ,
An inorganic component such as Al 2 O 3 is sintered. The properties of this calcined product are as follows: for example, when sawdust is mixed with construction sludge as a fuel for self-combustion, the apparent specific gravity is 1.25 and the water absorption is 14.5.
% Is suitable as a lightweight aggregate.
【００２９】そこで、振動ふるい４１にかけて製品の大
きさ別に選別して貯留する。Then, the product is sorted by the size of the product through the vibrating sieve 41 and stored.
【００３０】また、建設残土を廃棄処理する場合には、
含水率が泥水・泥土に比べて著しく低くかつ固形化して
いるので、一旦グリズリー１１で粉砕し、磁力選別機１
２等によって金属不純物を取除いてから残土置場１３に
貯留する。そして、湿式粉砕ミル１４において、適量の
水分を加えながら粉砕して６０％以上の水分を有するス
ラリーとする。そして、このスラリーを高圧ポンプ１５
でバッチ式ミキサー７に送り、上述の処理を施す。尚、
脱水アジテータ８の上澄の余剰水６５及びフィルタープ
レス２１の圧縮水は、貯水槽５０に集められ、固形分を
沈澱分離する一方、ｐＨ調整槽５１に移して中和調整し
た後排水する。貯水槽５０の固形分は湿式粉砕ミル１４
に循環させる。Further, when the construction surplus soil is disposed of,
Since the water content is remarkably low and solidified as compared with muddy water and mud, it is crushed once with a grizzly 11 and a magnetic separator 1
After removing metal impurities by 2 etc., it is stored in the residual soil storage place 13. Then, in the wet grinding mill 14, the slurry is pulverized while adding an appropriate amount of water to obtain a slurry having a water content of 60% or more. Then, the slurry is supplied to a high-pressure pump 15.
To the batch type mixer 7 to perform the above-described processing. still,
The surplus water 65 of the supernatant of the dehydrated agitator 8 and the compressed water of the filter press 21 are collected in a water storage tank 50 to precipitate and separate solids. The solid content of the water storage tank 50 is determined by the wet grinding mill 14.
Circulate.
【００３１】尚、上述の実施例は本発明の好適な実施の
一例ではあるがこれに限定されるものではなく本発明の
要旨を逸脱しない範囲において種々変形実施可能であ
る。例えば、図２に示すように、ミキサー７を用いずに
シックナー２からスラリーポンプ３で取出した濃縮泥水
を脱水アジテータ８に直接供給し、脱水アジテータ８に
自燃用燃料６３及び必要なプレス助剤を供給して燃料混
合と脱水及び撹拌を行なうこともある。The above embodiment is a preferred embodiment of the present invention, but the present invention is not limited to this embodiment, and various modifications can be made without departing from the gist of the present invention. For example, as shown in FIG. 2, concentrated muddy water taken out of the thickener 2 by the slurry pump 3 without using the mixer 7 is directly supplied to the dewatering agitator 8, and the fuel 63 for self-combustion and the necessary press assistant are supplied to the dewatering agitator 8. It may be supplied to perform fuel mixing, dehydration and stirring.
【００３２】[0032]
【発明の効果】以上の説明より明らかなように、本発明
の泥水・泥土類の廃棄処理装置は、シックナーにおいて
水分調整した濃縮泥水・泥土に自燃用燃料を混入して撹
拌し、均質に混練した後機械脱水し、適当な水分に調整
した後造塊し、含有する自燃用燃料及び有機質成分を燃
焼させて焼成し、無機質系の人工軽量骨材を製造するよ
うにしているので、乾燥した泥水・泥土類の塊りに均質
に混在する自燃用燃料の燃焼熱によって、固形物内の無
機質成分が焼結し、粒状物同士の融着や目詰りを起こす
ことなく無機質系の人工軽量骨材として焼成される。As is apparent from the above description, the muddy water / muddy waste disposal apparatus of the present invention mixes the fuel for self-combustion into the concentrated muddy water / mud whose water content has been adjusted in a thickener, stirs it, and uniformly kneads it. After that, it was mechanically dewatered, adjusted to an appropriate water content, then agglomerated, and the contained fuel for self-combustion and organic components were burned and fired to produce an inorganic artificial lightweight aggregate, so it was dried. by the combustion heat of the self燃用fuel homogeneously mixed in lumps of mud-mud acids, and inorganic components sintered in solid, inorganic-based artificial lightweight aggregate without causing clogging fusion and eye granules between Fired as a material.
【００３３】したがって、従来多額のコストをかけて安
定化・固化させてから投棄ないし埋設するしか処理の方
法がなかった泥水・泥土を人工骨材の原料として利用す
ることができ、廃棄物の有効利用と経済的価値の付加が
可能となる。Therefore, muddy water and mud which had conventionally been treated only by dumping or burying after stabilizing and solidifying at a large cost can be used as a raw material of artificial aggregate, and waste can be effectively used. Use and economic value can be added.
【００３４】また、シックナーによって水分調整をした
後に自燃用燃料を加えてから混練するようにしたので、
自燃用燃料と泥水の固形分とが均質に混練できると共に
ダム工事等において発生する泥水のような高含水率の泥
水・泥土でも良質の混練原料として人工軽量骨材を安価
に製造できる。In addition, since the fuel for self-combustion is added after the water content is adjusted by the thickener, the mixture is kneaded.
The fuel for self-combustion and the solid content of the muddy water can be homogeneously kneaded, and an artificial lightweight aggregate can be produced at low cost as a high-quality kneading raw material even for muddy water or muddy soil having a high water content such as muddy water generated in dam construction or the like.
【図１】本発明の泥水・泥土類の廃棄処理装置の一実施
例を示す原理図であるFIG. 1 is a principle view showing an embodiment of a muddy water / muddy waste disposal apparatus of the present invention.
【図２】本発明の泥水・泥土類の廃棄処理装置の他の実
施例を示す原理図である。FIG. 2 is a principle view showing another embodiment of the muddy water / muddy waste disposal apparatus of the present invention.
１ 混練設備 ２ シックナー ２０ 成形設備 ３０ 焼成設備 ６１ 泥水 ６２ 凝集剤 ６３ 自燃用燃料 ６４ 混練原料 ６５ 上澄の余剰水 DESCRIPTION OF SYMBOLS 1 Kneading equipment 2 Thickener 20 Molding equipment 30 Baking equipment 61 Muddy water 62 Coagulant 63 Fuel for self-combustion 64 Kneading raw material 65 Surplus water of supernatant
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ０９Ｃ 1/06 Ｂ０９Ｂ 3/00 ＺＡＢ Ｃ０４Ｂ 14/02 ３０３Ｐ Continued on the front page (51) Int.Cl. 7 Identification code FI B09C 1/06 B09B 3/00 ZAB C04B 14/02 303P
Claims (1)
で攪拌して水分調整し、その後前記シックナーから供給
される濃縮泥水の固形量に応じた適量の自燃用燃料を添
加して均質に混練する混練設備と、自燃用燃料を混練し
た原料を機械的に脱水して更に適当な水分に調整した後
造塊する成形設備と、その造塊原料を含有する自燃用燃
料の燃焼によって焼成し無機質系の人工軽量骨材とする
燃焼設備とから成り、ミキサーと前記成形設備との間に
混練原料の分離を防ぐと共に流動性を維持し、上澄みの
余剰水を所要に応じ排出する脱水アジテータを備えたこ
とを特徴とする泥水・泥土類の廃棄処理装置。1. Muddy water and mud are mixed with a coagulant with a thickener to adjust the water content, and then an appropriate amount of fuel for self-combustion according to the solid content of the concentrated mud supplied from the thickener is added and uniformly kneaded. Kneading equipment, forming equipment for mechanically dewatering the raw material obtained by kneading the fuel for self-combustion and further adjusting the water content to a suitable level, and then forming a lump. Ri from the combustion equipment for artificial lightweight aggregate formation, between the mixer and the molding equipment
Prevents separation of kneaded raw materials and maintains fluidity,
A dehydration agitator that discharges excess water as needed
Door waste processing apparatus of muddy water, mud compound according to claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11374291A JP3242674B2 (en) | 1991-04-19 | 1991-04-19 | Mud and mud waste treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11374291A JP3242674B2 (en) | 1991-04-19 | 1991-04-19 | Mud and mud waste treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH078997A JPH078997A (en) | 1995-01-13 |
| JP3242674B2 true JP3242674B2 (en) | 2001-12-25 |
Family
ID=14619978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11374291A Expired - Fee Related JP3242674B2 (en) | 1991-04-19 | 1991-04-19 | Mud and mud waste treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3242674B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5249504B2 (en) * | 2006-09-11 | 2013-07-31 | 忠夫 山藤 | Method for producing porous material |
| JP2015123402A (en) * | 2013-12-26 | 2015-07-06 | 山建プラント株式会社 | Waste treatment method, waste treatment apparatus for executing the method, fired pellets manufactured by the method or the apparatus, and bottom sediment improving method using the fired pellets |
| JP6578257B2 (en) * | 2016-07-15 | 2019-09-18 | Ｄｏｗａエコシステム株式会社 | Detoxification method for contaminated soil |
| CN110540353A (en) * | 2019-10-10 | 2019-12-06 | 中信国安建工集团有限公司 | Method for treating waste slurry resources in construction |
-
1991
- 1991-04-19 JP JP11374291A patent/JP3242674B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH078997A (en) | 1995-01-13 |
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