KR100602441B1 - Manufacture methods and system of solidification manufactured goods with solid waste - Google Patents

Manufacture methods and system of solidification manufactured goods with solid waste Download PDF

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KR100602441B1
KR100602441B1 KR20040064859A KR20040064859A KR100602441B1 KR 100602441 B1 KR100602441 B1 KR 100602441B1 KR 20040064859 A KR20040064859 A KR 20040064859A KR 20040064859 A KR20040064859 A KR 20040064859A KR 100602441 B1 KR100602441 B1 KR 100602441B1
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cement
sludge
waste
mixed
waste gypsum
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KR20060016431A (en
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허관
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허관
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    • 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

Abstract

본 발명은 폐기물을 토목·건설재료로 활용함에 있어 유·무기성 슬러지, 석탄재 또는 폐석고, 및 시멘트를 넣어 배합한 다음 첨가제를 넣어 혼합 교반하고 성형압축 또는 압출하여 제조된 고강도 고형화물을 시멘트벽돌, 인공골재, 블록, 인터록킹블럭, 벽돌, 인공어초, 또는 지층재로 활용하는 고형화제품의 제조방법에 있어서, 상기 유기성 슬러지는 수분함량을 20중량% 이하로 건조·분해한 다음 분쇄장치로 이송시켜 분쇄하며, 분쇄된 슬러지를 배합비에 따라 이송되어온 석탄재, 폐석고, 또는 폐모래와 혼합기에서 혼합하고, 시멘트를 넣어 균일하게 혼합한 이후 물과 고화제를 포함하는 첨가제를 넣어 혼합 교반하여 압축기 또는 압출기에서 성형압축 또는 압출하는 고형화제품의 제조방법에 관한 것이다. 고형화제품은 압축강도를 기준으로 KS F 4004 시멘트벽돌과 KS L 5201 보통시멘트에 준한 인공골재, 블록, 인터록킹블럭, 벽돌, 인공어초, 지층재 등의 다양한 용도의 토목·건설재료로 활용될 수 있다. In the present invention, in the use of waste as a civil engineering and construction materials, the organic and inorganic sludge, coal ash or waste gypsum, and cement are added and then mixed with the additives, mixed and agitated and molded or compressed into high strength solids manufactured by cement brick, In the method of manufacturing a solidified product used as an artificial aggregate, a block, an interlocking block, a brick, an artificial reef, or a strata material, the organic sludge is dried and decomposed to 20% by weight or less, and then transferred to a pulverizer. Pulverize, mix the pulverized sludge with coal material, waste gypsum, or waste sand, which is transferred according to the mixing ratio in a mixer, add cement and mix it uniformly, and then add and mix additives including water and a hardening agent in a compressor or extruder The present invention relates to a method for producing a solidified product which is molded or compressed. Solidified products can be used as civil engineering and construction materials for various purposes such as artificial aggregates, blocks, interlocking blocks, bricks, artificial reefs, and strata according to KS F 4004 cement brick and KS L 5201 ordinary cement based on compressive strength. have.

유·무기성 슬러지, 고형화기술 개발, 토목·건설재료, 석탄재, 폐석고, 시멘트, 첨가제Development of organic and inorganic sludge, solidification technology, civil and construction materials, coal ash, waste gypsum, cement, additives

Description

폐기물을 이용한 고형화 제품 제조 방법과 제조 시스템 {MANUFACTURE METHODS AND SYSTEM OF SOLIDIFICATION MANUFACTURED GOODS WITH SOLID WASTE}MANUFACTURE METHODS AND SYSTEM OF SOLIDIFICATION MANUFACTURED GOODS WITH SOLID WASTE}

도 1은 본 발명에 따른 유·무기성 슬러지를 건조·분해하여 석탄재, 폐석고 등과 혼합하고 시멘트를 넣어 배합한 다음 고화제 등의 첨가제를 넣어 혼합 교반하고 성형압축 또는 압출하여 양생 등의 공정을 거쳐 토목·건설재료로 재활용하는 고형화제품 제조시스템의 개략도이다. 도 2에서 도 6은 폐기물과 시멘트 등의 배합비 변화에 따른 압축강도를 나타내는 그래프이다.1 is dried and decomposed organic and inorganic sludge according to the present invention, mixed with coal ash, waste gypsum, and the like, and then mixed with cement, and then mixed with an additive such as a hardener, mixed, stirred, molded, compressed or extruded to undergo curing and the like. Schematic diagram of a solidified product manufacturing system that is recycled as civil engineering and construction materials. 2 to 6 is a graph showing the compressive strength according to the change in the mixing ratio of waste and cement.

도 2는 시멘트 중량비 10% 및 폐석고/슬러지 배합비 변화에 따른 압축강도, 도 3은 시멘트 중량비 15% 및 폐석고/슬러지 배합비 변화에 따른 압축강도, 도 4는 시멘트 중량비 20% 및 폐석고/슬러지 배합비 변화에 따른 압축강도, 도 5는 시멘트 중량비 25% 및 폐석고/슬러지 배합비 변화에 따른 압축강도, 도 6은 시멘트 중량비 25% 및 석탄재/슬러지 배합비 변화에 따른 압축강도로 폐석고 또는 석탄재와 슬러지의 배합비 및 시멘트 중량비 변화에 따라 제조된 고화체의 압축강도가 다르게 나 타난다. 2 is the compressive strength according to the cement weight ratio of 10% and the waste gypsum / sludge mixture ratio, Figure 3 is the compressive strength according to the cement weight ratio of 15% and waste gypsum / sludge mixture ratio, Figure 4 is a change in 20% cement weight ratio and waste gypsum / sludge mixture ratio Compressive strength according to Figure 5, the compressive strength according to the 25% cement weight ratio and the change of waste gypsum / sludge mixture, Figure 6 is a compressive strength according to the change of 25% cement weight ratio and coal / sludge mixture ratio and the mixing ratio and cement weight ratio of waste ash and coal ash and sludge According to the change, the compressive strength of the produced solids is different.

본 발명은 유기성 슬러지는 소각로 폐열 등을 이용하여 건조·분해하여 감량화하는 슬러지 건조·분해 시스템과 각종 일반 폐기물을 혼합하여 고형화한 제품을 토목·건설재료로 자원화하는 고형화제품 제조 방법 및 고형화제품의 활용 용도별 제조조건에 관한 것이다. 산업체나 하수종말처리장에서 배출되는 유·무기성 슬러지는 그 종류에 따라 대부분이 매립, 해양투기 및 소각 처리되어 주변지역의 환경오염을 증가시키며, 극히 일부만이 퇴비화, 메탄발효, 지렁이 사육, 건축자재 등으로 재활용되고 있기 때문에 재활용 효과가 매우 낮다.The present invention is a sludge drying and decomposition system for reducing organic sludge by drying and decomposing by using waste heat of incinerator, and solidifying product manufacturing method and resource utilization of solidified products by solidifying products solidified by mixing various general wastes. It relates to manufacturing conditions for each use. Most of the organic and inorganic sludges discharged from industrial and sewage treatment plants are landfilled, dumped, and incinerated, increasing environmental pollution in the surrounding area, and only a few of them are composted, methane fermented, earthworm-raised, building materials. Because it is recycled to the back, the recycling effect is very low.

일반적으로 폐수 슬러지와 폐석고, 석탄재의 처리는 매립, 소각 및 해역배출이 대부분을 차지하고 있는데 정부에서는 재활용이 가능한 유기성 슬러지의 대부분이 매립이나 소각처리 됨에 따른 문제점을 개선하기 위해서 폐기물관리법 시행규칙 제 6조 1항 별표 4의 “지정페기물의 사업장폐기물의 기준 및 방법”에서 2003년 7월부터 폐수처리시설에서 발생되는 유기성오니의 직접 매립을 금지(폐수발생량이 1일 2,000㎥이상)하고, 소각이나 퇴비화 등의 방법으로 처리한 후 잔재물 만을 매립토록 규정하고 있다. 그러나 사업체에서 유기성슬러지의 적절한 처리대책을 마련하지 못하고 비교적 처리비용이 저렴한 폐기물 해역배출업체에 위탁하여 해양투기 하고 있는 실정으로 국제분쟁 야기의 문제를 안고 있다. In general, wastewater sludge, waste gypsum, and coal ash are mainly composed of landfill, incineration, and seawater discharge.In order to improve the problems caused by the recycling of most organic sludge, which is reclaimed or incinerated, Article 6 of the Enforcement Rule of the Waste Management Act Paragraph 1 Annex 4, “Standards and Methods of Business Waste from Designated Waste,” prohibits the direct reclamation of organic sludge from waste water treatment facilities since July 2003. Only the residues are required to be reclaimed after treatment by such methods. However, there is a problem of causing international disputes due to the fact that businesses do not prepare appropriate treatment measures for organic sludge and dump them at sea waste discharge companies with relatively low disposal costs.

폐기물 고형화 분야의 종래의 기술은 대부분 단순한 매립을 목적으로 소각재나 유해폐기물 중에 포함된 중금속 등의 유해물질을 시멘트 고형화하여 유해물질 용출을 억제한 다음 매립하고 있으며, 일부 사업장에서는 무기성 폐기물 만을 선별하여 건축자재로 재활용하기 위해서 건조·분쇄·선별·혼합한 후에 천연골재를 별도로 투입하고, 혼합된 재료를 성형·양생하여 벽돌과 보도블럭 등 제한적으로 재활용되고 있다. Conventional technologies in the field of waste solidification are mostly for the purpose of simple reclamation, solidifying the hazardous substances such as incinerators or heavy metals contained in hazardous wastes by cement solidification to suppress the leaching of harmful substances, and in some workplaces, only inorganic wastes are selected and selected. In order to recycle the building materials, natural aggregate is added separately after drying, crushing, screening, and mixing, and the mixed materials are molded and cured and recycled on a limited basis such as bricks and sidewalk blocks.

본 발명자들은 유·무기성 슬러지와 폐석고, 석탄재 등의 폐기물에 시멘트와 첨가제를 혼합하여 제조한 고강도의 고형화제품이 시멘트벽돌 또는 보통시멘트에 준한 인공골재, 블록, 인터록킹블럭, 벽돌, 인공어초, 지층재 등의 토목·건설재료로 활용함에 있어 압축강도 및 유해성 검사에서 품질기준을 충족함을 발견하였다. 또한, 본 발명자들은 고형화제품을 제조할 때 폐기물별 배합비와 시멘트량에 따라 활용용도가 서로 다른 고화체를 경제적으로 제조하는 고형화기술을 개발하는데 성공하였다.The inventors of the present invention provide a high-intensity solidified product prepared by mixing cement and additives with wastes such as organic / inorganic sludge, waste gypsum, and coal ash, and artificial aggregate, block, interlocking block, brick, artificial reef, It has been found that the compressive strength and hazard test satisfy the quality standards in the civil and construction materials such as strata. In addition, the present inventors have succeeded in developing a solidification technology for economically manufacturing solidified bodies having different applications depending on the mixing ratio and the amount of cement for each waste when producing a solidified product.

상기 문제점을 해결하기 위한 본 발명은 석유화학 공장폐수 처리공정에서 다량 배출되고 있는 슬러지의 직접매립 금지로 인한 폐기물처리 비용증가 부담을 줄이고, 매립이나 해양투기에 의존하고 있는 슬러지를 자원화하는 기술개발의 필요성이 증대됨에 따라서 지금까지 주로 유해 폐기물을 고형화하여 매립하는데 활용되어온 단순한 고형화기술을 극복하고, 폐기물을 토목·건설자재로 활용하는 고강도 고형화기술을 확보하였다. 즉, 일반 폐기물을 고강도의 토목·건설자재로의 활용하기 위해서 폐기물의 종류와 폐기물별 배합비 및 고화제와 시멘트의 사용량에 따른 고형화제품의 압축강도와 유해성 품질기준을 충족하고, 토목·건설자재의 수요량과 활용용도에 맞는 고형화제품을 경제적으로 쉽게 제조하는 특징이 있다. 따라서 고형화제품의 수요 창출과 제품 용도를 크게 넓혀 폐기물 재활용량을 극대화시킴으로써 폐기물의 처리로 인한 환경오염을 방지하고, 자갈 등의 토목·건설자재 부족으로 인한 석산개발 등으로 자연훼손 등의 고질적인 문제 개선 효과와 사업장의 폐기물 처리 비용증가 부담과 슬러지 처리로 인한 2차 환경오염 문제를 방지하는 환경친화적인 기술이다. 따라서 본 발명은 시멘트벽돌 또는 보통시멘트로서의 품질규격을 확보하여 폐기물을 다양한 토목·건설자재로 실용화하는 것을 목적으로 한다.The present invention for solving the above problems is to reduce the burden of waste disposal cost increase due to the prohibition of direct landfilling of sludge discharged in the petrochemical plant wastewater treatment process, and to develop the technology to resource the sludge depending on landfill or ocean dumping As the necessity increases, we have overcome the simple solidification technology that has been used mainly for solidifying hazardous waste to landfill, and secured a high-strength solidification technology that utilizes waste as civil engineering and construction materials. In other words, in order to utilize general wastes as high-strength civil and construction materials, it satisfies the compressive strength and hazardous quality standards of solidified products according to the types of wastes, mix ratios by waste, and the amount of solidifying agent and cement. It is characterized by economical and easy manufacturing of solidified products suitable for demand and utilization. Therefore, the demand for solidified products and the wider use of products are maximized to maximize the amount of waste recycled, thereby preventing environmental pollution due to waste disposal, and improving qualitative problems such as natural damage by developing quarries due to lack of civil engineering and construction materials such as gravel. It is an environmentally friendly technology that prevents the secondary environmental pollution problem caused by the effects and the increase of waste disposal cost at the workplace and sludge treatment. Therefore, an object of the present invention is to secure a quality standard as a cement brick or ordinary cement, and to utilize the waste into various civil and construction materials.

상기의 목적을 달성하기 위하여, 본 발명은
폐기물을 토목·건설재료로 활용함에 있어 유·무기성 슬러지, 석탄재 또는 폐석고, 및 시멘트를 넣어 배합한 다음 첨가제를 넣어 혼합 교반하고 성형압축 또는 압출하여 제조된 고강도 고형화물을 시멘트벽돌, 인공골재, 블록, 인터록킹블럭, 벽돌, 인공어초, 또는 지층재로 활용하는 고형화제품의 제조방법에 있어서,
상기 유기성 슬러지는 수분함량을 20중량% 이하로 건조·분해한 다음 분쇄장치로 이송시켜 분쇄하며, 분쇄된 슬러지를 배합비에 따라 이송되어온 석탄재, 폐석고, 또는 폐모래와 혼합기에서 혼합하고, 시멘트를 넣어 균일하게 혼합한 이후 물과 고화제를 포함하는 첨가제를 넣어 혼합 교반하여 압축기 또는 압출기에서 성형압축 또는 압출하는 고형화제품의 제조방법을 제공한다.
상기 시멘트 함량은 10중량% 내지 25중량%를 유지하고, 성형압력은 30㎏f/㎠ 내지 60㎏f/㎠로 압축하고, 폐석고/슬러지의 비를 0.07 내지 0.45로 유지하는 것이 바람직하다.
상기 시멘트 함량은 10중량% 내지 25중량%를 유지하고, 성형압력은 30㎏f/㎠ 내지 60㎏f/㎠로 압축하고, 석탄재/슬러지의 비를 0.14 내지 0.60으로 유지하는 것이 바람직하다.
이하 본 발명을 도면을 참조하여 상세히 설명한다.
도 1은 폐기물의 고형화제품 제조공정의 개략도이다. 유·무기성 슬러지, 폐석고, 석탄재를 등의 폐기물을 인공경량골재, 블록, 인터록킹블럭, 벽돌, 인공어초, 지층재 등과 같은 토목·건축자재의 재료로 재활용하는 방법에 있어서, 상기 유기성 슬러지(1)를 콘베이어 또는 이송스크류를 통하여 건조장치(3)로 이송시켜 약 20% 이하의 수분함량이 되도록 건조시키고, 이 건조 슬러지를 분쇄장치(5)로 이송시켜 일정한 크기의 소립자로 분쇄시킨 다음, 여기서 얻어진 분쇄물과 폐석고(6) 또는 석탄재(6)에 시멘트(4)를 일정 비율로 계근하여 투입한 다음 혼합기(8)로 혼합하고, 여기서 얻어진 혼합물에 물과 고화제(7)를 넣어 균일하게 혼합하여 압축성형기(9) 또는 압출기(9)로 이송시켜 소정의 형상으로 성형한 다음 최종적으로 양생실(10)에서 양생하는 것으로 고형화제품(11)이 완성된다.
상기 유기 슬러지는 수분함량을 약 20중량% 이하로 건조·분해한 다음 분쇄장치로 이송시켜 분쇄시킨다. 분쇄된 슬러지와 배합비에 따라 이송되어온 석탄재, 폐석고 등은 혼합기에서 1차 혼합하고 다음 시멘트를 넣어 균일하게 혼합한 이후 물과 고화제 등의 첨가제를 넣어 혼합 교반한 다음 성형기에서 성형압축 또는 압출하면 중간제품인 고형화물이 생성한다. 이때 고형화물의 활용 용도에 따라 슬러지와 석탄재, 폐석고 등의 배합비와 성형방법 등의 제조조건이 다르다. 제품의 재료는 일반폐기물이 대상이며, 제조 과정에서 시멘트와 고화제를 사용하기 때문에 유해물질의 용출이 없는 고형화물이 제조된다.
본 발명은 폐기물을 토목·건설자재로 활용하기 위한 고형화 기술로서 슬러지 및 폐석고, 석탄재의 조합은 시멘트량이 전체 폐기물의 10~25중량%로 변화시키면서 폐석고와 슬러지 배합비 0.07~0.50, 석탄재와 슬러지 배합비 0.14~0.33으로 조정하면서 실험하였다. 실험에 사용한 고화제량은 농축액을 400배 희석하여 100㎖ 주입하였고, 석탄재와 슬러지 배합비가 0.45~0.60의 경우는 농축액을 600배 희석하여 150㎖를 주입하였다. 혼합물의 성형압력은 30kgf/㎠과 60kgf/㎠으로 하였다. 상기 고형화 재료인 폐수 슬러지, 폐석고, 석탄재, 시멘트의 물리적 특성은 다음 표 1과 같다.
In order to achieve the above object, the present invention
In the use of waste as civil engineering and construction materials, organic and inorganic sludge, coal or waste gypsum, and cement are mixed, mixed with additives, mixed and stirred, and molded or compressed into cement brick, artificial aggregate, In the manufacturing method of a solidified product used as a block, interlocking block, brick, artificial reef, or strata material,
The organic sludge is dried and decomposed to 20% by weight or less of water, and then pulverized by transporting to a pulverization apparatus, and the pulverized sludge is mixed with coal material, waste gypsum, or waste sand and mixed in a mixer, and cement is added. After uniformly mixing, the additives including water and a solidifying agent are added to the mixture and stirred to provide a manufacturing method of a solidified product which is compressed or extruded in a compressor or an extruder.
The cement content is maintained at 10% to 25% by weight, the molding pressure is compressed to 30kgf / ㎠ to 60kgf / ㎠, it is preferable to maintain the ratio of waste gypsum / sludge to 0.07 to 0.45.
The cement content is maintained at 10% by weight to 25% by weight, the molding pressure is compressed to 30kgf / cm 2 to 60kgf / cm 2, it is preferable to maintain the ratio of coal ash / sludge to 0.14 to 0.60.
Hereinafter, the present invention will be described in detail with reference to the drawings.
1 is a schematic diagram of a solidified product manufacturing process of waste. In the method of recycling organic / inorganic sludge, waste gypsum, coal ash, etc. into materials of civil engineering and construction materials such as artificial lightweight aggregate, blocks, interlocking blocks, bricks, artificial reefs, strata, etc. 1) is transferred to the drying apparatus 3 through a conveyor or a transfer screw, dried to a water content of about 20% or less, and transferred to the pulverizing apparatus 5, and pulverized into small particles of a predetermined size. Cement (4) is added to the pulverized product and the waste gypsum (6) or coal ash (6) obtained at this rate, and then mixed with a mixer (8), and water and a solidifying agent (7) are added to the mixture obtained here. It is mixed in such a way as to be transferred to a compression molding machine (9) or an extruder (9) to be molded into a predetermined shape and finally cured in the curing chamber (10) to complete the solidified product (11).
The organic sludge is dried and decomposed to about 20% by weight or less of water, and then pulverized by transferring to a pulverizer. The pulverized sludge and coal ash and waste gypsum transferred according to the mixing ratio are mixed firstly in a mixer, then mixed with cement and mixed uniformly, then mixed and stirred with additives such as water and hardener, and then compressed or extruded in a molding machine. Product solids are produced. At this time, the mixing ratio of the sludge, coal ash, waste gypsum, etc. and the manufacturing conditions of the molding method are different depending on the application of the solid. The material of the product is general waste, and since the cement and solidifying agent are used in the manufacturing process, a solid product is produced without the elution of harmful substances.
The present invention is a solidification technology for utilizing waste as civil engineering and construction materials, the combination of sludge, waste gypsum and coal ash, while the cement content is changed from 10 to 25% by weight of the total waste, the mixing ratio of waste gypsum and sludge 0.07 to 0.50, coal and sludge mixing ratio 0.14 The experiment was adjusted to ˜0.33. The amount of hardener used in the experiment was diluted 400 times with 100 ml of concentrated liquid, and when the coal ash and sludge mixture ratio was 0.45-0.60, the concentrated liquid was diluted 600 times with 150 ml. The molding pressures of the mixture were 30 kgf / cm 2 and 60 kgf / cm 2. Physical properties of the wastewater sludge, waste gypsum, coal ash, and cement which are the solidification materials are shown in Table 1 below.

표1. 폐수 슬러지의 물리적 특성Table 1. Physical Properties of Wastewater Sludge

구 분division 수분함량 (%)Water content (%) 건량기준(%)Dry weight standard (%) 습량기준(%)Humidity standard (%) 회분함량Ash content 강열감량Ignition loss 회분함량Ash content 가연분함량Combustible content 폐수슬러지(H사)Wastewater Sludge (H Company) 3939 8181 1919 49.4149.41 11.5911.59 폐석고(N사)Waste Gypsum (N Company) 1212 8989 1111 78.3278.32 9.679.67 석탄재(H사)Coal ash (H company) 0.30.3 99.699.6 0.40.4 99.3099.30 0.400.40 시멘트cement 1One 9898 22 97.0297.02 1.981.98

폐기물을 고형화하여 토목·건축자재로 자원화하기 위해서 시멘트에 슬러지와 폐석고 및 슬러지와 석탄재의 배합비 변화에 따른 압축강도를 측정하였다. 연구결과 폐기물을 배합조건에 따라 변화된 고화체의 압축강도를 기준으로 시멘트벽돌 및 보통시멘트에 준해서 활용하기 위한 조건은 다음과 같다.In order to solidify the waste and turn it into a civil engineering and building material, the compressive strength of the sludge, waste gypsum and the mixture of sludge and coal ash was measured. As a result of the study, the following conditions are used to apply the waste based on the cement brick and ordinary cement based on the compressive strength of the solidified material which is changed according to the mixing conditions.

삭제delete

본 발명의 시멘트량 및 폐석고/슬러지 배합비 변화에 따른 압축강도Compressive strength according to the amount of cement and waste gypsum / sludge mixture ratio of the present invention

본 발명의 고형화 조건별 물성시험으로 슬러지와 폐석고량의 배합비에 따른 압축강도를 측정하고자 시멘트량을 전체 중량비 10%인 0.6㎏, 20%인 1.2㎏, 25%인 1.5㎏으로 변화시키면서 실험하였다. 고화제는 원액을 400배 희석하여 50㎖를 주입하고, 고화체 성형압력은 30과 60㎏/㎠에서 성형하였다. 이때 폐석고/슬러지의 배합비를 0.07~0.45로 변화시키면서 각 조건에서의 압축강도를 조사하였으며, 양생기간은 7일, 14일 및 28일로 하였다. In order to measure the compressive strength according to the blending ratio of the sludge and the waste-rock solids in the physical property test of the solidification conditions of the present invention was tested while changing the amount of cement to 0.6kg, 20% 1.2kg, 25% 1.5kg. The solidifying agent was diluted 400-fold dilutions of the stock solution and injected into 50 ml, and the solidified body forming pressure was formed at 30 and 60 kg / cm 2. At this time, the compressive strength under each condition was investigated while changing the mixing ratio of waste gypsum / sludge from 0.07 to 0.45. The curing period was set to 7 days, 14 days and 28 days.

시멘트벽돌 제조조건 (시멘트량을 20w% 사용한 경우) Cement brick manufacturing condition (when the cement amount is 20w%)

도 2와 도 3은 시멘트량을 중량비 20%인 1.2㎏을 유지하고 폐석고/슬러지의 배합비를 0.07, 0.14, 0.23, 0.33, 0.45로 변화시키면서 각 조건에서의 압축강도를 조사한 결과 성형압력 30㎏f/㎠의 경우 폐석고/슬러지 비가 0.07, 0.33 및 0.45에서는 KS F 4004 시멘트벽돌의 기준인 7일 압축강도 80㎏f/㎠ 및 28일 압축강도 110㎏f/㎠을 초과하였다. 또한 성형압력 60㎏f/㎠의 경우는 모든 조건의 배합비에서 KS F 4004 시멘트벽돌의 압축강도 기준을 초과하였다. 따라서 상기조건에서 형성된 고화체는 시멘트벽돌에 준한 토목·건축 재료로 활용이 가능하다.2 and 3 shows the compression strength under each condition while maintaining the cement content of 1.2 kg with a weight ratio of 20% and changing the mixing ratio of waste gypsum / sludge to 0.07, 0.14, 0.23, 0.33, 0.45. In the case of / cm2, the waste gypsum / sludge ratios exceeded the 7-day compressive strength of 80 kgf / cm2 and the 28-day compressive strength of 110 kgf / cm2 for the KS F 4004 cement bricks at 0.07, 0.33 and 0.45. In addition, the molding pressure of 60 kgf / ㎠ exceeded the compressive strength criterion of KS F 4004 cement brick at the mixing ratio of all conditions. Therefore, the solidified body formed under the above conditions can be utilized as a civil engineering and building material based on cement bricks.

시멘트벽돌 제조조건 (시멘트량을 25w% 사용한 경우) Cement brick manufacturing conditions (when the cement amount is used 25w%)

도 4와 도 5는 시멘트량을 전체 중량비의 25%인 1.5㎏으로 고정하고, 폐석고/슬러지의 배합비를 0.07, 0.15, 0.25, 0.36 및 0.50으로 변화를 주면서 각 조건에서의 압축강도를 조사한 결과 성형압력 30㎏f/㎠의 경우 폐석고/슬러지 비가 0.15, 0.25, 0.36 및 0.50에서는 KS F 4004 시멘트벽돌의 압축강도 기준을 초과하였다. 또한 성형압력 60㎏f/㎠의 경우는 모든 조건의 배합비에서 KS F 4004 시멘트벽돌의 압축강도 기준을 초과하였다. 따라서 상기조건에서 성형된 고화체는 시멘트벽돌에 준한 토목·건축 재료로 활용이 가능하다.4 and 5 fixed the cement amount to 1.5kg, which is 25% of the total weight ratio, and determined the compressive strength under each condition while changing the mixing ratio of waste gypsum / sludge to 0.07, 0.15, 0.25, 0.36 and 0.50. At pressures of 30 kgf / cm 2, the waste gypsum / sludge ratios exceeded the compressive strength criteria of KS F 4004 cement bricks at 0.15, 0.25, 0.36 and 0.50. In addition, the molding pressure of 60 kgf / ㎠ exceeded the compressive strength criterion of KS F 4004 cement brick at the mixing ratio of all conditions. Therefore, the solidified body formed under the above conditions can be utilized as a civil engineering and building material based on cement bricks.

시멘트량 및 석탄재/슬러지 배합비 변화에 따른 압축강도Compressive strength according to the amount of cement and coal / sludge mixture

시멘트량을 전체 중량비의 20%인 1.2㎏으로 고정한 상태에서 석탄재/슬러지의 배합비 변화에 따른 압축강도를 측정하였다. 고화제량은 혼합슬러지의 수분함량에 따라서 석탄재/슬러지 배합비가 0.14, 0.23 및 0.33의 경우는 400배 희석하여 100㎖를 주입하였고, 배합비가 0.45와 0.60의 경우는 600배 희석하여 150㎖를 주입하였으며 배합물의 성형압력은 60㎏/㎠로 하였다. 석탄재/슬러지의 배합비를 0.14, 0.23, 0.33, 0.45 및 0.60으로 변화시키면서 양생기간을 7일, 14일 및 28일로 변화시켰을 경우의 압축강도를 조사하였다. The compressive strength of the coal ash / sludge mixture ratio was measured while the cement content was fixed at 1.2 kg, which is 20% of the total weight ratio. The amount of solidified agent was injected 100ml by diluting 400 times in case of coal ash / sludge mixture ratio 0.14, 0.23 and 0.33 according to the water content of mixed sludge, and injecting 150ml by diluting 600 times in case of 0.45 and 0.60 mixture ratio. The molding pressure of the blend was 60 kg / cm 2. The compressive strength of the coal ash / sludge was varied to 0.14, 0.23, 0.33, 0.45, and 0.60 while the curing period was changed to 7 days, 14 days and 28 days.

시멘트벽돌 및 보통시멘트 제조조건Cement brick and normal cement manufacturing conditions

도 6은 석탄재/슬러지 배합비 변화에 따른 압축강도 실험결과 석탄재/슬러지의 배합비가 0.14, 0.23, 0.33, 0.45 및 0.60인 경우 KS F 4004 시멘트벽돌의 압축강도 기준치보다 높게 나타났다. 따라서 석탄재/슬러지 배합비가 0.14~0.60의 조건에서 성형된 고화체는 시멘트벽돌에 준한 토목·건축 재료로 활용이 가능하다. 또한, 석탄재/슬러지의 배합비가 0.45 및 0.6인 경우는 KS L 5201 보통시멘트의 압축강도 기준치보다 높게 나타났다. 따라서 석탄재/슬러지 배합비가 0.45 및 0.60인 조건에서 성형된 고화체는 시멘트벽돌뿐만 아니라 보통시멘트에 준한 토목·건축 재료로 활용이 가능하다.6 shows that the compressive strength test results according to the change of coal ash / sludge ratio were higher than the compressive strength of KS F 4004 cement brick when the coal ash / sludge blend ratio was 0.14, 0.23, 0.33, 0.45 and 0.60. Therefore, the solidified body formed under the condition of coal ash / sludge ratio of 0.14 ~ 0.60 can be used as civil engineering and building material based on cement brick. In addition, when the blending ratio of coal ash / sludge was 0.45 and 0.6, the compressive strength of KS L 5201 ordinary cement was higher than the standard value. Therefore, the solidified body formed under the coal ash / sludge ratio of 0.45 and 0.60 can be used not only for cement brick but also for civil and construction materials based on ordinary cement.

고형화 제품의 용출특성Dissolution Characteristics of Solidified Products

폐석고/슬러지 및 석탄재/슬러지를 배합하여 고화체를 제조하는 과정에서 고화제 미사용의 경우와 고화제를 A제 및 B제를 사용한 경우에 제조된 고형화 제품의 유해성 평가를 실시하였다. 제품의 유해성평가 항목은 Cr+6, Cu, Zn, Cd, Pb으로 하였다. 실험결과 모든 대상 시료의 중금속 용출농도는 폐기물관리법에서 제시하는 배출허용기준치 이내를 유지하여 고형화제품의 유해물질 용출은 없는 것으로 나타났다. 고화제 종류별 고형화제품의 유해물질 용출특성은 다음 표 2와 같다.In the process of producing solidified products by combining waste gypsum / sludge and coal ash / sludge, the hazard evaluation of the solidified product prepared when the solidifying agent was not used and when the solidifying agent used the A and B agents were carried out. The hazard assessment items of the product were Cr + 6 , Cu, Zn, Cd, and Pb. The results showed that the heavy metal elution concentrations of all the samples remained within the emission allowance standard suggested by the Waste Management Act, so that no hazardous substance elution of solidified products. The elution characteristics of hazardous substances of solidified products by type of solidifying agent are shown in Table 2 below.

표2. 고화제 종류별 고형화제품의 유해물질 용출특성Table 2. Elution Characteristics of Hazardous Substances in Solidified Products by Type of Solidifying Agent

구 분division Cu+6Cu + 6 CuCu ZnZn CdCD PbPb 배출허용기준(mg/l)Emission allowance standard (mg / l) 1.5 이상1.5 or more 3 이상More than 3 -- 0.3 이상0.3 or more 3 이상More than 3 미투입Not input 0.2580.258 0.8220.822 0.3150.315 0.2850.285 0.3140.314 A제A made 0.1830.183 1.0711.071 0.4320.432 0.2160.216 0.5100.510 B제B agent 0.7790.779 0.3420.342 0.2970.297 0.2810.281 0.5000.500

고형화제품 경제성 검토 (시멘트벽돌 및 보통시멘트 제조원가)
고화체를 시멘트벽돌로 활용할 경우의 제조원가를 조사하였다. 실험결과 KS F 4004 시멘트벽돌의 압축강도를 초과한 고화체 제조조건은 시멘트의 중량비가 전체 폐기물의 20%(1.2㎏), 성형압력이 30㎏/㎠인 경우 폐석고/슬러지 배합비가 0.07, 0.33 및 0.45이었고, 성형압력이 60㎏/㎠인 경우의 폐석고/슬러지 배합비는 0.07~0.45이었다. 자원화시설 설치의 경우 시멘트벽돌에 준한 고화체 제조능력을 연간 약 18,000톤을 기준으로 검토한 결과 시멘트벽돌의 제조총괄원가는 재료비, 노무비, 경비, 일반관리비 및 이윤을 포함해서 735,635천원이며, 톤당제조원가는 40,868원으로 조사되었다. 고화체를 보통시멘트로 활용할 경우의 제조원가를 조사하였다. 실험결과 KS L 5201 보통시멘트 압축강도 기준을 초과한 고화체 제조조건은 시멘트의 중량비가 전체 폐기물의 20%(1.2㎏), 성형압력이 60㎏/㎠, 고화제 원액을 600배 희석하여 150㎖를 주입한 상태에서 석탄재/슬러지 배합비는 0.45와 0.60이었다. 자원화시설 설치의 경우 보통시멘트에 준한 고화체의 제조원가는 슬러지와 석탄재 등의 폐기물은 재료비에서 제외되기 때문에 재료비에 포함하는 시멘트와 고화제 및 첨가제의 조건이 KS F 4004 시멘트벽돌 제조조건의 재료비와 일치한다.
따라서 압축강도와 유해물질 용출억제에 있어서 매우 우수한 특징을 가지는 폐기물 고형화기술 개발은 산업체의 폐기물처리 비용증가 부담을 줄이고, 폐기물 처리로 인한 2차 환경오염물질 배출과 천연골재 채취로 인한 자연환경 파괴 문제를 개선하는데 매우 유용하다.
이상에서는 본 발명의 바람직한 실시예를 참조하여 설명하였지만, 본 기술분야의 숙련된 당업자라면 하기의 특허청구범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.
Economic Evaluation of Solidified Products (Cement Brick and Normal Cement Manufacturing Cost)
The manufacturing cost of the solids as cement brick was investigated. The experimental results of solidified material exceeding the compressive strength of KS F 4004 cement brick showed that the waste gypsum / sludge mix ratio was 0.07, 0.33 and 0.45 when the weight ratio of cement was 20% (1.2㎏) of the total waste and the molding pressure was 30㎏ / ㎠. In the case where the molding pressure was 60 kg / cm 2, the waste gypsum / sludge mixture ratio was 0.07 to 0.45. In the case of the installation of recycling facilities, the production capacity of solidified materials based on cement bricks was reviewed based on about 18,000 tons per year. The total production cost of cement bricks is 735,635 thousand including material costs, labor costs, expenses, general management costs and profits. The survey was conducted at 40,868 won. The manufacturing cost of using solids as ordinary cement was investigated. As a result of the experiment, the solidified material manufacturing condition exceeding the KS L 5201 ordinary cement compressive strength standard, the cement weight ratio was 20% (1.2㎏) of total waste, the forming pressure was 60㎏ / ㎠ and the solidified solution was diluted 600 times to 150ml. In the injected state, the coal ash / sludge blend ratio was 0.45 and 0.60. In the case of the installation of recycling facilities, the cost of producing solidified materials in accordance with ordinary cement is not included in the cost of materials such as sludge and coal ash, so the conditions of cement, hardener and additives included in the material cost are the same as those of KS F 4004 cement brick manufacturing conditions. .
Therefore, the development of waste solidification technology, which has very good characteristics in terms of compressive strength and dissolution of harmful substances, reduces the burden of increasing the waste disposal cost of the industry, and the problem of destroying the natural environment by discharging secondary environmental pollutants and collecting natural aggregates from waste disposal. Very useful for improving
Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention described in the claims below. It will be appreciated.

삭제delete

이상에서 살펴본 바와 같이, 유·무기성 폐수 슬러지, 폐석고, 및 석탄재를 혼합하여 고형화하는 자원화하기 위해서 시멘트에 슬러지/폐석고 및 슬러지/석탄재의 배합비 변화에 따른 압축강도를 측정한 결과 폐기물을 이용하여 형성된 고화체를 시멘트벽돌 및 보통시멘트에 활용하기 위한 배합조건을 제시하였다. As described above, in order to solidify by mixing the organic and inorganic wastewater sludge, waste gypsum, and coal ash into solidification, the compressive strength of the sludge / waste gypsum and sludge / coal ash in cement was measured and the resultant was formed using the waste. The mixing conditions for applying solids to cement bricks and ordinary cements are presented.

Claims (3)

폐기물을 토목·건설재료로 활용함에 있어 유·무기성 슬러지, 석탄재 또는 폐석고, 및 시멘트를 넣어 배합한 다음 첨가제를 넣어 혼합 교반하고 성형압축 또는 압출하여 제조된 고강도 고형화물을 시멘트벽돌, 인공골재, 블록, 인터록킹블럭, 벽돌, 인공어초, 또는 지층재로 활용하는 고형화제품의 제조방법에 있어서,In the use of waste as civil engineering and construction materials, organic and inorganic sludge, coal or waste gypsum, and cement are mixed, mixed with additives, mixed and stirred, and molded or compressed into cement brick, artificial aggregate, In the manufacturing method of a solidified product used as a block, interlocking block, brick, artificial reef, or strata material, 상기 유기성 슬러지는 수분함량을 20중량% 이하로 건조·분해한 다음 분쇄장치로 이송시켜 분쇄하며, 분쇄된 슬러지를 배합비에 따라 이송되어온 석탄재, 폐석고, 또는 폐모래와 혼합기에서 혼합하고, 시멘트를 넣어 균일하게 혼합한 이후 물과 고화제를 포함하는 첨가제를 넣어 혼합 교반하여 압축기 또는 압출기에서 성형압축 또는 압출하는 고형화제품의 제조방법.The organic sludge is pulverized by drying and decomposing the water content to 20% by weight or less, and then transported to a pulverization apparatus, and mixed the pulverized sludge with coal material, waste gypsum, or waste sand, which is transferred according to the mixing ratio, and put cement. Method of producing a solidified product by compression or extrusion in a compressor or an extruder by mixing and stirring an additive containing water and a solidifying agent after mixing uniformly. 제1항에 있어서, 상기 시멘트 함량은 10중량% 내지 25중량%를 유지하고, 성형압력은 30㎏f/㎠ 내지 60㎏f/㎠로 압축하고, 폐석고/슬러지의 비를 0.07 내지 0.45로 유지하는 것을 특징으로 하는 고형화제품의 제조방법.The method of claim 1, wherein the cement content is maintained at 10% to 25% by weight, the molding pressure is compressed to 30kgf / ㎠ to 60kgf / ㎠, the ratio of waste gypsum / sludge is maintained at 0.07 to 0.45 Method for producing a solidified product, characterized in that. 제1항에 있어서, 상기 시멘트 함량은 10중량% 내지 25중량%를 유지하고, 성형압력은 30㎏f/㎠ 내지 60㎏f/㎠로 압축하고, 석탄재/슬러지의 비를 0.14 내지 0.60으로 유지하는 것을 특징으로 하는 고형화제품의 제조방법.The method of claim 1, wherein the cement content is maintained at 10% to 25% by weight, the molding pressure is compressed to 30kgf / ㎠ to 60kgf / ㎠, the coal ash / sludge ratio is maintained at 0.14 to 0.60 Method for producing a solidified product, characterized in that.
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KR101271369B1 (en) * 2011-10-12 2013-06-07 오원 Coal ash block and manufacturing method of Coal ash block
KR101747698B1 (en) 2017-04-17 2017-06-15 이석규 System and method for recycling pollutants

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KR100872357B1 (en) * 2007-05-30 2008-12-08 이영선 Manufacturing method of nutritious artificial reef using rice power and food waste
KR100900160B1 (en) * 2008-07-22 2009-06-02 주식회사 온누리 Waste materials solidified manufacturing system
KR101151313B1 (en) * 2011-07-28 2012-06-08 이창섭 Method for manufacturing precast pavers by using coal ash and closed shell
CN106082817B (en) * 2016-06-16 2018-09-04 阳新鹏富矿业有限公司 A kind of solid waste or the brickmaking technology of dangerous waste processing

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Publication number Priority date Publication date Assignee Title
KR101271369B1 (en) * 2011-10-12 2013-06-07 오원 Coal ash block and manufacturing method of Coal ash block
KR101747698B1 (en) 2017-04-17 2017-06-15 이석규 System and method for recycling pollutants

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