JP2002361290A - Recycling system for construction sludge and method for manufacturing regenerated crushed stone - Google Patents

Recycling system for construction sludge and method for manufacturing regenerated crushed stone

Info

Publication number
JP2002361290A
JP2002361290A JP2001173429A JP2001173429A JP2002361290A JP 2002361290 A JP2002361290 A JP 2002361290A JP 2001173429 A JP2001173429 A JP 2001173429A JP 2001173429 A JP2001173429 A JP 2001173429A JP 2002361290 A JP2002361290 A JP 2002361290A
Authority
JP
Japan
Prior art keywords
sludge
crushed stone
sand
construction
recycled
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.)
Granted
Application number
JP2001173429A
Other languages
Japanese (ja)
Other versions
JP3670600B2 (en
Inventor
Haruji Okada
春治 岡田
Yukiaki Matsuno
幸昭 松野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MES KK
MURANO KENZAI KK
Original Assignee
MES KK
MURANO KENZAI KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MES KK, MURANO KENZAI KK filed Critical MES KK
Priority to JP2001173429A priority Critical patent/JP3670600B2/en
Publication of JP2002361290A publication Critical patent/JP2002361290A/en
Application granted granted Critical
Publication of JP3670600B2 publication Critical patent/JP3670600B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04Waste materials; Refuse
    • C04B18/16Waste materials; Refuse from building or ceramic industry
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02Agglomerated materials, e.g. artificial aggregates
    • C04B18/021Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Treatment Of Sludge (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

PROBLEM TO BE SOLVED: To permit 100% recycling of construction sludge as a recycled materials (regenerated crushed stones) in a recycling system for the construction sludge and to provide a method for manufacturing the regenerated crushed stones. SOLUTION: The construction sludge is kneaded together with aggregate consisting of the regenerated crushed stones and cement by a mixer 6 and the mixture is kneaded and solidified to a ready mixed concrete form and is solidified by sun drying. The solidified concrete is crushed by a crusher 8 by which the regenerated crushed stones (regenerated road bed material) are produced. The regenerated crushed stones are used as the aggregate of the concrete and 100% recycling is made possible without producing other wastes.

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】本発明は、建設汚泥から再生
砕石を生成するリサイクルシステムと再生砕石の製造方
法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recycling system for producing reclaimed crushed stone from construction sludge and a method for producing reclaimed crushed stone.

【0002】[0002]

【従来の技術】従来から、建設工事等で発生する「コン
クリート殻」や、道路補修工事で発生する「アスファル
ト殻」をクラッシャー等で細かく粉砕し、再生砕石(土
木用資材)とし、これを掘削工事等の埋め戻し材や道路
の路盤材として再利用することが知られている。また、
建設汚泥とは、建設工事に係る掘削工事に伴って排出さ
れるもののうち、含水率が高く粒子が微細な泥状のもの
は、無機性汚泥(建設汚泥)という。泥状とは、標準仕
様ダンプトラックに山積みが出来ず、また、その上を人
が歩けない状態を言い、「廃棄物処理法の対象物」とな
る。なお、地山の掘削により生じる掘削物は土砂であ
り、土砂は廃棄物処理法の対象外である。この土砂か汚
泥かの判断は、掘削工事に伴って排出される時点で行
い、概ね掘削する工法によって決められる。
2. Description of the Related Art Conventionally, "concrete shell" generated during construction work and "asphalt shell" generated during road repair work are finely crushed with a crusher or the like to produce crushed stone (material for civil engineering) and excavation. It is known to be reused as backfill material for construction and the like and roadbed material for roads. Also,
Construction sludge, which is discharged along with excavation work related to construction work, is a sludge having a high water content and fine particles is referred to as inorganic sludge (construction sludge). The muddy state refers to a state in which the standard specification dump truck cannot be piled up and a person cannot walk on it, and it is an "object of the waste treatment method". The excavated material generated by excavation of the ground is earth and sand, and the earth and sand are not subject to the waste disposal method. The judgment as to whether it is earth or sand or sludge is made at the time of discharge along with the excavation work, and is generally determined by the method of excavation.

【0003】既存の処理方法、乃至は既存の多くの施設
は、汚泥を脱水機により脱水処理し、砂と水・その他に
分離させ、取り出した「砂」はセメント工場や生コンの
骨材等で再利用されている。その砂の再利用率は建設汚
泥全体の6%程度である。残された残留物の殆どが、
「水分」であり、この水は処理された後、場内散水や下
水道へ放流されている。また、僅かながらへドロも残留
物として出るが、これらは埋め立て処分されている。前
記の脱水処理では、新たな廃棄物を作っている。
[0003] Existing treatment methods, or many existing facilities, dewater sludge by a dehydrator to separate it into sand, water, and others, and the "sand" taken out is used in a cement plant or aggregate of ready-mixed concrete. Has been reused. The sand recycling rate is about 6% of the total construction sludge. Most of the remaining residue is
This is "moisture," which is treated and then released to the site and to the sewer. In addition, a small amount of sludge also appears as residue, but these have been landfilled. In the dehydration process, new waste is produced.

【0004】ところで、建設汚泥は、建設発生土やコン
クリート・アスファルト殻のような建設副産物の指定副
産物としての指定はなされていないが、これらに準じて
発生の抑制及び再生利用の促進に努めるよう建設省から
の指導がなされている。平成8年の厚生省の調査による
と、全産業廃棄物における建設廃棄物は19%で電気・
ガス・熱供給業の19.8%に次ぐ高い割合となってい
る。これら建設廃棄物に占める建設汚泥の割合は約10
%で、その殆どが公共土木工事から排出されている。こ
の建設汚泥のリサイクル率は、その排出量の6%と大変
低く、アスファルト殻の81%、コンクリート殻の65
%に比べて極端に悪い状況にある。その理由としては、
建設汚泥が、上記のアスファルト殻やコンクリート殻・
建設発生土等のリサイクル法上の指定副産物及び再生資
源に指定されていないことが大きな原因とも言われてい
るが、最大の原因は有効な再利用の手段や処理方法がな
かったからである。
Incidentally, construction sludge is not designated as a designated by-product of construction by-products, such as construction soil and concrete / asphalt shells. Guidance from the ministry has been given. According to a survey conducted by the Ministry of Health and Welfare in 1996, 19% of all industrial waste
This is the second highest percentage in the gas and heat supply industry after 19.8%. The ratio of construction sludge to these construction wastes is about 10
%, Most of which comes from public works. The recycling rate of this construction sludge is very low at 6% of its discharge, 81% of asphalt shell and 65% of concrete shell.
The situation is extremely bad compared to the percentage. The reason is that
The construction sludge is used for asphalt shells and concrete shells
It is said that the major cause is that it is not specified as a designated by-product or recycled resource under the Recycling Law of construction waste soil, etc., but the biggest cause is that there was no effective reuse means or treatment method.

【0005】また、建設汚泥の再生資源化方法として、
建設汚泥を回収し、含まれる砂分を分離除去した後、セ
メントを混合して、脱水固形分を破砕し、粉体化して埋
戻し材を生成する方法が知られている(例えば、特開平
11−210019号公報参照)。
[0005] Further, as a method of recycling construction sludge,
There is known a method of collecting construction sludge, separating and removing sand contained therein, mixing cement, crushing dehydrated solids, and pulverizing to produce a backfill material (for example, Japanese Patent Application Laid-Open No. No. 11-210010).

【0006】[0006]

【発明が解決しようとする課題】しかしながら、上記の
ような従来の建設汚泥からの埋戻し材生成方法において
は、依然として廃棄物が生じて、100%リサイクルと
なるものではない。本発明は、この問題を解決するため
になされたものであり、建設汚泥を再生資源(再生砕
石)として100%のリサイクルを可能とする、建設汚
泥のリサイクルシステムと再生砕石の製造方法を提供す
ることを目的とする。
However, in the above-described conventional method for producing a backfill material from construction sludge, waste is still generated, and it is not 100% recyclable. The present invention has been made in order to solve this problem, and provides a construction sludge recycling system and a method for producing recycled crushed stone that enable 100% recycling of construction sludge as recycled resources (recycled crushed stone). The purpose is to:

【0007】[0007]

【課題を解決するための手段】上記目的を達成するため
に請求項1に記載の発明は、建設汚泥から再生砕石を生
成するリサイクルシステムにおいて、回収した建設汚泥
から比較的粒子の大きな砂・石・コンクリート殻等の固
まり及び粒子の細かい砂等を一旦分離除去する選別手段
と、前記除去後の汚泥と、固化助材として後記粉砕手段
により粉砕した再生砕石から成る骨材、及びセメントを
混練する混練手段と、前記混練した汚泥を固化するまで
天日乾燥する乾燥手段と、前記により乾燥固化してなる
コンクリート固化物、及び前記選別手段により選別され
た固まりを再生用建設廃棄物と共に、再生砕石(製品)
としてある程度の大きさの粒度になるように粉砕する粉
砕手段とを備えたものである。
Means for Solving the Problems To achieve the above object, the invention according to claim 1 is directed to a recycling system for producing reclaimed crushed stone from construction sludge.・ Kneading the sorting means for once separating and removing the clumps of the concrete shell and the like and fine sand of the particles, the sludge after the removal, the aggregate made of the reclaimed crushed stone crushed by the crushing means as a solidification aid, and the cement. Kneading means, drying means for drying the kneaded sludge in the sun until it is solidified, concrete solidified by drying and solidifying by the method, and regenerated crushed stone together with the regenerated construction waste, (Product)
And a pulverizing means for pulverizing the particles to a certain size.

【0008】上記構成においては、公共土木工事等で発
生する建設汚泥を、再生砕石から成る骨材、及びセメン
トと共に混練手段(ミキサー等)により混練して生コン
クリート状に練り固め、天日乾燥により固化させ、得ら
れたコンクリート固化物を粉砕手段(クラッシャー等)
で粉砕して再生砕石(製品:再生路盤材など)とする。
ここに、コンクリートの骨材として再生砕石を使用し、
また、選別手段により選別された固まりを再生用建設廃
棄物と共に粉砕して再生砕石とするので、建設汚泥から
再生砕石を生成する際に、他に廃棄物(水・ヘドロ)を
出すことなく、100%リサイクルが可能となる。
In the above construction, construction sludge generated in public works, etc. is kneaded together with aggregates made of recycled crushed stone and cement by a kneading means (mixer or the like), kneaded into a ready-mixed concrete form, and dried by sunlight. The concrete is solidified and the obtained concrete solidified is crushed (crusher, etc.)
To make recycled crushed stone (product: recycled roadbed material, etc.).
Here, using recycled crushed stone as concrete aggregate,
In addition, since the lump sorted by the sorting means is crushed together with the construction waste for regeneration into reclaimed crushed stone, when producing reclaimed crushed stone from construction sludge, no other waste (water / sludge) is generated. 100% recycling is possible.

【0009】また、請求項2に記載の発明は、建設汚泥
から再生砕石を生成するリサイクルシステムにおいて、
回収した汚泥から比較的粒子の大きな砂・石・コンクリ
ート殻等の固まりを分離除去する選別手段と、前記除去
後の汚泥にセメントを添加し撹拌する攪拌手段と、前記
撹拌した汚泥を脱水し、砂(脱水ケーキ)と水に分離す
る脱水手段と、前記により脱水した際に残留物として出
た水と、固化助材として後記粉砕手段により粉砕した再
生砕石から成る骨材、及びセメントを混練する混練手段
と、前記により混練されたものを天日乾燥し自然固化物
とする乾燥手段と、前記により乾燥した固化物、前記選
別手段により選別された固まり、及び前記脱水手段によ
り分離された砂(脱水ケーキ)を、再生用建設廃棄物と
共に、再生砕石(製品)としてある程度の大きさの粒度
に粉砕する粉砕手段とを備えたものである。
[0009] Further, according to the present invention, in a recycling system for producing recycled crushed stone from construction sludge,
Sorting means for separating and removing agglomerates of relatively large particles of sand, stone, concrete shells and the like from the recovered sludge, stirring means for adding and stirring cement to the sludge after the removal, and dewatering the stirred sludge; Kneading dewatering means for separating sand (dewatered cake) and water, water generated as a residue when dewatering as described above, aggregate made of recycled crushed stone crushed by crushing means described later as a solidification aid, and cement are kneaded. A kneading means, a drying means for drying the kneaded material in the sun to obtain a naturally solidified product, a solidified product dried by the above, a lump selected by the sorting device, and sand separated by the dewatering device ( And a crushing means for crushing the dewatered cake together with the construction waste for regeneration into a crushed stone (product) to a certain degree of particle size.

【0010】上記構成においては、請求項1に加えて、
撹拌した汚泥を脱水手段により脱水し、砂(脱水ケー
キ)と水に分離し、水を乾燥・固化して再生砕石を生成
し、また、砂(脱水ケーキ)を再生用建設廃棄物と共に
粉砕して再生砕石を生成するので、汚泥の処理能力が向
上する。
In the above configuration, in addition to the first aspect,
The stirred sludge is dewatered by a dewatering means, separated into sand (dewatered cake) and water, and the water is dried and solidified to generate reclaimed crushed stone, and the sand (dewatered cake) is crushed together with construction waste for regeneration. To produce reclaimed crushed stones, thereby improving sludge treatment capacity.

【0011】また、請求項3に記載の発明は、建設汚泥
から再生砕石を生成する製造方法において、回収した建
設汚泥から比較的粒子の大きな砂・石・コンクリート殻
等の固まり及び粒子の細かい砂等を一旦分離除去するス
テップと、前記除去後の汚泥と、固化助材として後記粉
砕手段により粉砕した再生砕石から成る骨材、及びセメ
ントを混練するステップと、前記混練した汚泥を固化す
るまで天日乾燥するステップと、前記により乾燥固化し
てなるコンクリート固化物、及び前記選別手段により選
別された固まりを再生用建設廃棄物と共に、再生砕石
(製品)としてある程度の大きさの粒度になるように粉
砕するステップとから成るものである。この方法におい
ては、請求項1と同等の作用が得られる。
[0011] The invention according to claim 3 is a method for producing reclaimed crushed stone from construction sludge, wherein a mass of sand, stone, concrete shell and the like having relatively large particles and a fine sand of particles are collected from the recovered construction sludge. Once separating and removing, and the step of kneading the sludge after the above-mentioned removal, aggregate made of reclaimed crushed stone crushed by a crushing means described later as a solidification aid, and cement, and stirring the kneaded sludge until solidified. The step of drying in the sun, the concrete solidified by the drying and solidification, and the mass sorted by the sorting means together with the reclaimed construction waste so as to have a certain degree of particle size as reclaimed crushed stone (product). Grinding step. In this method, an operation equivalent to that of the first aspect is obtained.

【0012】また、請求項4に記載の発明は、建設汚泥
から再生砕石を生成する製造方法において、回収した汚
泥から比較的粒子の大きな砂・石・コンクリート殻等の
固まりを分離除去する選別ステップと、前記除去後の汚
泥にセメントを添加し撹拌するステップと、前記撹拌し
た汚泥を脱水し、砂(脱水ケーキ)と水に分離するステ
ップと、前記により脱水した際に残留物として出た水
と、固化助材として後記粉砕手段により粉砕した再生砕
石から成る骨材、及びセメントを混練するステップと、
前記により混練されたものを天日乾燥し自然固化物とす
るステップと、前記により乾燥した固化物、前記選別手
段により選別された固まり、及び前記脱水手段により分
離された砂(脱水ケーキ)を、再生用建設廃棄物と共
に、再生砕石(製品)としてある程度の大きさの粒度に
粉砕するステップとから成るものである。この方法にお
いては、請求項2と同等の作用が得られる。
According to a fourth aspect of the present invention, in the method for producing reclaimed crushed stone from construction sludge, a separating step of separating and removing agglomerates of relatively large particles of sand, stone, concrete shell, etc. from the recovered sludge. Adding cement to the sludge after the removal and stirring; dewatering the stirred sludge to separate it into sand (dewatered cake) and water; and water discharged as a residue when dewatered by the above. And a step of kneading an aggregate made of recycled crushed stone crushed by crushing means as a solidification aid, and cement,
A step of drying the mixture kneaded by the sun to obtain a naturally solidified product, and a step of drying the solidified product, the mass sorted by the sorting device, and the sand (dehydrated cake) separated by the dewatering device. Pulverizing together with the reclaimed construction waste to a certain size as reclaimed crushed stone (product). In this method, an operation equivalent to that of the second aspect is obtained.

【0013】[0013]

【発明の実施の形態】以下、本発明の一実施形態に係る
建設汚泥のリサイクルシステムと再生砕石の製造方法に
ついて図面を参照して説明する。図1は建設汚泥のリサ
イクルシステムによる基本的な処理の流れを示す。建設
汚泥とは、建設・土木工事等の掘削工事に伴い発生する
含水率が高く粒子が微細な泥状の無機性汚泥、又は、コ
ンクリート構造物の取り壊し工事等で、水圧を利用した
切削及び研磨工事によって生じた微細なコンクリート粉
体が混合した排水物、又は、コンクリートプラントでプ
ラントを洗浄した際に排出されるコンクリート洗浄水
等、主に建設関連工事によって発生した無機性汚泥であ
る。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A construction sludge recycling system and a method for producing recycled crushed stone according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a basic process flow of the construction sludge recycling system. Construction sludge is cutting and polishing using water pressure, such as demolition of inorganic sludge with high water content and fine particles generated during excavation work such as construction and civil engineering work, or concrete structure. Inorganic sludge mainly generated by construction-related work, such as wastewater mixed with fine concrete powder generated by construction work, or concrete washing water discharged when the plant is washed in a concrete plant.

【0014】図1において、排出業者(#1)から収集
運搬業者(#2)を経て建設汚泥を回収し、受入れチェ
ックをして(#3)、受入れホッパー(#4)により砂
と瓦礫を選別し(#5)、汚泥水槽にて攪拌し(#
6)、ミキサーにて汚泥と骨材とセメントを混練し(#
7)、その後、天日乾燥し固化させる(#8)。固化し
たコンクリート固化物を粉砕することで(#9)、再生
砕石(製品:再生路盤材等)とし(#10)、これを一
般業者に販売する(#11)。
In FIG. 1, construction sludge is collected from a discharger (# 1) via a collector / carrier (# 2), checked for acceptance (# 3), and sand and rubble are removed by a receiving hopper (# 4). Sorted (# 5) and stirred in a sludge tank (#
6) Mix the sludge, aggregate and cement with a mixer (#
7) Then, it is dried in the sun and solidified (# 8). The solidified concrete is pulverized (# 9) to produce recycled crushed stone (product: recycled roadbed material, etc.) (# 10), which is sold to a general contractor (# 11).

【0015】図2は第1実施形態による建設汚泥のリサ
イクルシステムを示す。汚泥貯留槽1に投入された建築
汚泥は、ポンプによって砂礫選別機2(選別手段の一
つ)に送られ、石やコンクリート殻、アスファルト殻等
の固まりを選別除去する。選別除去された固まりは、再
生用建設廃棄物11として集められ、これらは破砕機8
(クラッシャー:粉砕手段)に送られる。破砕機8によ
り適度の大きさに破砕されたものは、最終的に得られる
再生骨材9(製品)となり、また、一部後述の固化助材
として使用される。砂礫選別機2により大きな固まりの
除去された建設汚泥は、サンドスクリーン3(選別手段
の一つ)に送られ、ここで建設汚泥中の比較的粒子の粗
い砂10を選別除去する。この砂10は再生用建設廃棄
物13として集められる。
FIG. 2 shows a construction sludge recycling system according to the first embodiment. The building sludge put into the sludge storage tank 1 is sent to a gravel sorter 2 (one of sorting means) by a pump, and sorts and removes clumps of stone, concrete shell, asphalt shell, and the like. The sorted-out mass is collected as construction waste for regeneration 11, and these are collected by a crusher 8.
(Crusher: crushing means). What has been crushed to an appropriate size by the crusher 8 becomes a finally obtained recycled aggregate 9 (product), and is partially used as a solidification aid described later. The construction sludge from which large lump has been removed by the gravel separator 2 is sent to a sand screen 3 (one of sorting means), where the relatively coarse sand 10 in the construction sludge is sorted and removed. This sand 10 is collected as construction waste 13 for regeneration.

【0016】上記により砂を除去された建設汚泥は、撹
拌漕4に送られ、ここで撹拌される。さらに、この建設
汚泥は、サイロ5からのセメントと、固化助材としての
再生骨材9と共にミキサー6(混練手段)に投入・混練
され、天日乾燥施設7(乾燥手段)で自然乾燥固化され
る。固化された建設汚泥固化物は、破砕機8(クラッシ
ャー:粉砕手段)により適度な大きさに粉砕され、再生
骨材9(製品:再生路盤材)となる。上記選別手段によ
り選別された固まりは、再生用建設廃棄物13(コンク
リート殻、アスファルト殻等)と共に、破砕機8により
粉砕され、再生骨材9を生成する。
The construction sludge from which sand has been removed as described above is sent to a stirring tank 4 where it is stirred. Further, this construction sludge is put into a mixer 6 (kneading means) and kneaded together with cement from the silo 5 and recycled aggregate 9 as a solidification aid, and is naturally dried and solidified in a solar drying facility 7 (drying means). You. The solidified construction sludge is pulverized to an appropriate size by a crusher 8 (crusher: crushing means), and becomes a recycled aggregate 9 (product: recycled roadbed material). The mass sorted by the sorting means is pulverized by the crusher 8 together with the construction waste for regeneration 13 (concrete shell, asphalt shell, etc.) to produce the recycled aggregate 9.

【0017】図3は第2実施形態による建設汚泥のリサ
イクルシステムを示す。この例は、脱水機を使用してい
る。汚泥貯留槽1に投入された建築汚泥は、砂礫選別機
2(選別手段の一つ)にポンプで送られ、石やコンクリ
ート殻等の固まりを選別する。上記の選別後、サンドス
クリーン3(選別手段の一つ)により建設汚泥中の比較
的粒子の粗い砂10を選別する。これらにより選別され
た石やコンクリート殻は、粉砕機8(クラッシャー:粉
砕手段)に送られ、ここで再生砕石(製品)としてある
程度の大きさの粒度に粉砕され、再生骨材(再生路盤
材)9とされる。砂を除去された建設汚泥は、サイロ5
からのセメントと共に撹拌漕4(攪拌手段)に投入さ
れ、撹拌される。その後、建設汚泥は、脱水機11(脱
水手段)にかけて脱水する。脱水された砂(脱水ケー
キ)は、再生用建設廃棄物13(コンクリート殻、アス
ファルト殻等)と共に、再生砕石(製品)としてある程
度の大きさの粒度に粉砕機8(クラッシャー:粉砕手
段)により粉砕する。これにより、再生骨材9(再生路
盤材)が生成される。
FIG. 3 shows a construction sludge recycling system according to a second embodiment. This example uses a dehydrator. The architectural sludge put into the sludge storage tank 1 is pumped to a gravel sorter 2 (one of sorting means), and sorts stones and concrete shells. After the above sorting, the sand screen 3 (one of the sorting means) sorts the relatively coarse sand 10 in the construction sludge. The stones and concrete shells selected by these are sent to a crusher 8 (crusher: crushing means), where they are crushed to a certain degree of particle size as recycled crushed stone (product), and recycled aggregate (recycled roadbed material) 9 is assumed. The construction sludge from which the sand has been removed is silo 5
Is put into the stirring tank 4 (stirring means) together with the cement from the above and stirred. Thereafter, the construction sludge is dewatered by the dewatering machine 11 (dewatering means). The dehydrated sand (dewatered cake) is crushed by a crusher 8 (crusher: crushing means) together with the reclaimed construction waste 13 (concrete shell, asphalt shell, etc.) to a certain size as reclaimed crushed stone (product). I do. As a result, recycled aggregate 9 (recycled roadbed material) is generated.

【0018】一方、脱水機11を経由する処理とは並列
的に、脱水機11で脱水されて出た余剰水分は、ポンプ
で分離水貯留槽12を経て、ミキサー6(混練手段)に
送られる。余剰水分は、このミキサー6において、サイ
ロ5からのセメントと、再生骨材9と共に混練され、天
日乾燥施設7で自然乾燥し固化される。固化された建設
汚泥固化物は、粉砕機8にて適度な大きさに粉砕され、
再生骨材9(再生路盤材)として再利用される。
On the other hand, in parallel with the processing through the dehydrator 11, the excess water dehydrated by the dehydrator 11 is sent to the mixer 6 (kneading means) via the separated water storage tank 12 by a pump. . Excess water is kneaded with the cement from the silo 5 and the recycled aggregate 9 in the mixer 6, and is naturally dried and solidified in the solar drying facility 7. The solidified construction sludge is pulverized to an appropriate size by the pulverizer 8,
It is reused as recycled aggregate 9 (recycled roadbed material).

【0019】上記のように、建設汚泥より選別された石
やコンクリート殻等の固まりが粉砕機8に送られて粉砕
され、再生骨材(再生路盤材)9とされ、また、固まり
を除去された建設汚泥を脱水機11により脱水し、砂
(脱水ケーキ)と水に分離し、それぞれから再生砕石9
を生成するので、汚泥の100%再生利用が可能とな
る。なお、本発明は上記実施の形態の構成に限られず種
々の変形が可能である。
As described above, a mass of stone, concrete shell, or the like selected from the construction sludge is sent to the crusher 8 where it is crushed into recycled aggregate (recycled roadbed material) 9, and the aggregate is removed. The dewatered construction sludge is dewatered by a dewatering machine 11 and separated into sand (dewatered cake) and water.
Is generated, so that the sludge can be recycled 100%. Note that the present invention is not limited to the configuration of the above embodiment, and various modifications are possible.

【0020】[0020]

【発明の効果】以上説明したように本発明の建設汚泥の
リサイクルシステムと再生砕石の製造方法によれば、建
設汚泥と、セメント及び骨材として再生砕石をコンクリ
ートを練る混練手段に投入して生コンクリート状に練り
固め、天日乾燥により固化させ、得られたコンクリート
固化物を粉砕して再生砕石(製品としての再生路盤材)
とするものであり、コンクリートの固化助材として再生
砕石から成る骨材を使用するようにしたので、建設汚泥
の全てを再生に使用して、他に廃棄物(水・ヘドロ)を
出さないものとなり、100%リサイクルが可能とな
る。
As described above, according to the recycling system for construction sludge and the method for producing recycled crushed stone according to the present invention, the construction sludge and the recycled crushed stone as cement and aggregate are put into a kneading means for kneading concrete to produce raw crushed stone. Kneaded into concrete, solidified by drying in the sun, pulverize the resulting solidified concrete and reclaim crushed stone (recycled roadbed material as a product)
Since aggregates made of recycled crushed stone are used as concrete solidification aids, all construction sludge is used for regeneration, and no other waste (water or sludge) is produced. And 100% recycling becomes possible.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明に係る建設汚泥のリサイクルシステム
による基本的な処理の流れを示す図。
FIG. 1 is a diagram showing a basic processing flow by a construction sludge recycling system according to the present invention.

【図2】 本発明に係る第1実施形態による建設汚泥の
リサイクルシステムの構成図。
FIG. 2 is a configuration diagram of a construction sludge recycling system according to the first embodiment of the present invention.

【図3】 本発明に係る第2実施形態による建設汚泥の
リサイクルシステムの構成図。
FIG. 3 is a configuration diagram of a construction sludge recycling system according to a second embodiment of the present invention.

【符号の説明】[Explanation of symbols]

2 砂礫選別機(選別手段) 3 サンドスクリーン(選別手段) 4 撹拌漕(攪拌手段) 6 ミキサー(混練手段) 7 天日乾燥施設(乾燥手段) 8 粉砕機(粉砕手段) 9 再生骨材(再生路盤材) 10 粒子の粗い砂 11 脱水機(脱水手段) 13 再生用建設廃棄物 2 Gravel separator (sorting means) 3 Sand screen (sorting means) 4 Stirrer tank (stirring means) 6 Mixer (kneading means) 7 Sun drying facility (drying means) 8 Crusher (crushing means) 9 Recycled aggregate (recycled) Roadbed material) 10 Coarse sand 11 Dehydrator (dehydration means) 13 Recycling construction waste

フロントページの続き Fターム(参考) 4D021 AA03 AB01 AB02 EA10 4D059 AA30 BD18 BK11 BK30 CC04 4D067 DD02 DD07 DD11 GA20 GB05Continued on the front page F term (reference) 4D021 AA03 AB01 AB02 EA10 4D059 AA30 BD18 BK11 BK30 CC04 4D067 DD02 DD07 DD11 GA20 GB05

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 建設汚泥から再生砕石を生成するリサイ
クルシステムにおいて、 回収した建設汚泥から比較的粒子の大きな砂・石・コン
クリート殻等の固まり及び粒子の細かい砂等を一旦分離
除去する選別手段と、 前記除去後の汚泥と、固化助材として後記粉砕手段によ
り粉砕した再生砕石から成る骨材、及びセメントを混練
する混練手段と、 前記混練した汚泥を固化するまで天日乾燥する乾燥手段
と、 前記により乾燥固化してなるコンクリート固化物、及び
前記選別手段により選別された固まりを再生用建設廃棄
物と共に、再生砕石(製品)としてある程度の大きさの
粒度になるように粉砕する粉砕手段とを備えたことを特
徴とする建設汚泥のリサイクルシステム。
Claims: 1. A recycling system for producing reclaimed crushed stone from construction sludge, comprising: a separation means for temporarily separating and removing agglomerates of relatively large particles of sand, stone, concrete shells and fine particles of sand from the recovered construction sludge; The sludge after the removal, an aggregate made of recycled crushed stones crushed by a crushing means as a solidifying aid, and a kneading means for kneading cement, and a drying means for drying the kneaded sludge in the sun until it is solidified, A concrete solidified product obtained by drying and solidifying as described above, and a crushing means for crushing the mass sorted by the sorting means together with the construction waste for regeneration to a certain size as recycled crushed stone (product). A recycling system for construction sludge, comprising:
【請求項2】 建設汚泥から再生砕石を生成するリサイ
クルシステムにおいて、 回収した汚泥から比較的粒子の大きな砂・石・コンクリ
ート殻等の固まりを分離除去する選別手段と、 前記除去後の汚泥にセメントを添加し撹拌する攪拌手段
と、 前記撹拌した汚泥を脱水し、砂(脱水ケーキ)と水に分
離する脱水手段と、 前記により脱水した際に残留物として出た水と、固化助
材として後記粉砕手段により粉砕した再生砕石から成る
骨材、及びセメントを混練する混練手段と、 前記により混練されたものを天日乾燥し自然固化物とす
る乾燥手段と、 前記により乾燥した固化物、前記選別手段により選別さ
れた固まり、及び前記脱水手段により分離された砂(脱
水ケーキ)を、再生用建設廃棄物と共に、再生砕石(製
品)としてある程度の大きさの粒度に粉砕する粉砕手段
とを備えたことを特徴とする建設汚泥のリサイクルシス
テム。
2. A recycling system for producing reclaimed crushed stone from construction sludge, comprising: sorting means for separating and removing agglomerates of relatively large particles of sand, stone, concrete hulls, etc. from the recovered sludge; A dewatering means for dewatering the agitated sludge and separating it into sand (dewatered cake) and water; and water as a residue when dewatered as described above; A kneading means for kneading an aggregate made of recycled crushed stone and a cement crushed by a crushing means; a drying means for drying the kneaded material in the sun to obtain a naturally solidified product; a solidified product dried by the above; The mass separated by the means and the sand (dewatered cake) separated by the dewatering means are recycled to a certain size as recycled crushed stone (product) together with the construction waste for regeneration. And a crushing means for crushing to a granular size.
【請求項3】 建設汚泥から再生砕石を生成する製造方
法において、 回収した建設汚泥から比較的粒子の大きな砂・石・コン
クリート殻等の固まり及び粒子の細かい砂等を一旦分離
除去するステップと、 前記除去後の汚泥と、固化助材として後記粉砕手段によ
り粉砕した再生砕石から成る骨材、及びセメントを混練
するステップと、 前記混練した汚泥を固化するまで天日乾燥するステップ
と、 前記により乾燥固化してなるコンクリート固化物、及び
前記選別手段により選別された固まりを再生用建設廃棄
物と共に、再生砕石(製品)としてある程度の大きさの
粒度になるように粉砕するステップとから成ることを特
徴とする再生砕石の製造方法。
3. A method for producing recycled crushed stone from construction sludge, comprising the steps of once separating and removing agglomerates of relatively large particles of sand, stone, concrete shell and the like and fine particles of sand, etc. from the recovered construction sludge; A step of kneading the sludge after the removal, an aggregate made of recycled crushed stone pulverized by a pulverizing means described later as a solidification aid, and a cement; and a step of drying the kneaded sludge in the sun until it is solidified. Pulverizing the solidified concrete, which has been solidified, and the mass sorted out by the sorting means together with the reclaimed construction waste to a certain size as reclaimed crushed stone (product). Method for producing recycled crushed stone.
【請求項4】 建設汚泥から再生砕石を生成する製造方
法において、 回収した汚泥から比較的粒子の大きな砂・石・コンクリ
ート殻等の固まりを分離除去する選別ステップと、 前記除去後の汚泥にセメントを添加し撹拌するステップ
と、 前記撹拌した汚泥を脱水し、砂(脱水ケーキ)と水に分
離するステップと、 前記により脱水した際に残留物として出た水と、固化助
材として後記粉砕手段により粉砕した再生砕石から成る
骨材、及びセメントを混練するステップと、 前記により混練されたものを天日乾燥し自然固化物とす
るステップと、 前記により乾燥した固化物、前記選別手段により選別さ
れた固まり、及び前記脱水手段により分離された砂(脱
水ケーキ)を、再生用建設廃棄物と共に、再生砕石(製
品)としてある程度の大きさの粒度に粉砕するステップ
とから成ることを特徴とする再生砕石の製造方法。
4. A method for producing reclaimed crushed stone from construction sludge, comprising: a step of separating and removing a mass of relatively large particles of sand, stone, concrete shell, etc. from the recovered sludge; Adding water and stirring, dewatering the stirred sludge and separating it into sand (dewatered cake) and water, and water that has come out as a residue when dewatering as described above, and a crushing means described later as a solidification aid. Kneading the aggregate made of recycled crushed stone and the cement, and the step of drying the kneaded material in the sun to obtain a naturally solidified material; and the solidified material dried by the above, and sorted by the sorting means. The agglomerates and the sand (dewatered cake) separated by the dewatering means are recycled together with the construction waste for regeneration into granules of a certain size as recycled crushed stone (product). Crushing each time.
JP2001173429A 2001-06-08 2001-06-08 Construction sludge recycling system and recycled crushed stone production method Expired - Fee Related JP3670600B2 (en)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114477901A (en) * 2022-02-07 2022-05-13 连云港美特佳新型建材有限公司 Compression-resistant carbonization-resistant recycled concrete and preparation method thereof
CN115613862A (en) * 2022-10-19 2023-01-17 武汉建工集团股份有限公司 Intelligent nomadic type quick recycled concrete production workshop and construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114477901A (en) * 2022-02-07 2022-05-13 连云港美特佳新型建材有限公司 Compression-resistant carbonization-resistant recycled concrete and preparation method thereof
CN115613862A (en) * 2022-10-19 2023-01-17 武汉建工集团股份有限公司 Intelligent nomadic type quick recycled concrete production workshop and construction method

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