KR100798893B1 - Manufacturing method concrete products using sludge - Google Patents
Manufacturing method concrete products using sludge Download PDFInfo
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- KR100798893B1 KR100798893B1 KR20070057921A KR20070057921A KR100798893B1 KR 100798893 B1 KR100798893 B1 KR 100798893B1 KR 20070057921 A KR20070057921 A KR 20070057921A KR 20070057921 A KR20070057921 A KR 20070057921A KR 100798893 B1 KR100798893 B1 KR 100798893B1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use 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
- C04B18/04—Waste materials; Refuse
- C04B18/0418—Wet materials, e.g. slurries
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use 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
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/241—Paper, e.g. waste paper; Paper pulp
- C04B18/243—Waste from paper processing or recycling paper, e.g. de-inking sludge
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
- C04B22/062—Oxides, Hydroxides of the alkali or alkaline-earth metals
- C04B22/064—Oxides, Hydroxides of the alkali or alkaline-earth metals of the alkaline-earth metals
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sustainable Development (AREA)
- Dispersion Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
본 발명은 슬러지를 이용하여 맨홀, 인공어초, 블록 등의 콘크리트 제품을 제조하는 방법에 관한 것으로, 더욱 상세하게는 시멘트와, 하수슬러지 및/또는 제지슬러지와, 황토와, 생석회를 혼합하고 여기에 모래를 배합한 후 성형하여 원하는 형상의 콘크리트 제품을 제조하는 방법에 관한 것이다.The present invention relates to a method for manufacturing concrete products such as manholes, artificial reefs, blocks using sludge, and more specifically, cement, sewage sludge and / or paper sludge, ocher, and quicklime The present invention relates to a method for producing concrete products of a desired shape by combining sand and then molding.
하수슬러지('하수오니'라고도 함)는 수처리 과정에서 발생하는 최종 산물로서, 대부분 매립이나 소각되고 있어 하수슬러지의 처리에 많은 비용이 들고 있고 환경오염의 원인이 되고 있어, 하수슬러지의 처리비용의 절감과 자원의 재활용을 위한 기술이 절실히 필요하다.Sewage sludge (also called 'sewage sludge') is the final product generated during the water treatment process, and most of it is landfilled or incinerated, which is expensive to treat sewage sludge and causes environmental pollution. There is an urgent need for technology to reduce and recycle resources.
하수슬러지의 처리방법으로는 소각하는 방법, 퇴비화를 하여 토양에 살포하는 방법, 또는 고형화하는 방법 등이 있으나, 소각방법은 하수슬러지를 소각하기 위한 시설의 설치 및 관리 비용의 부담이 크다는 문제점이 있고, 퇴비화는 넓은 부지가 필요하고 퇴비숙성 과정의 기간 동안의 악취 및 위해물질로 인하여 안전성 등에 문제점이 있다.As a method of treating sewage sludge, there is a method of incineration, composting and spraying the soil, or a method of solidifying the sewage sludge. However, incineration has a problem in that a large burden of installation and management costs for incineration of sewage sludge is high. However, composting requires a large site and there are problems with safety due to odors and harmful substances during the compost maturation process.
이러한 점을 고려할 때 세균과 중금속이 혼합된 하수슬러지를 대량으로 신속하게 고형화하여 안전하게 처리하는 방안으로서, 열에너지를 필요로 하지 않으면서도 비용이 저렴하고 세균을 사멸시키며 산업폐기물을 안전하게 흡착 및 콘크리트 제품으로 제조하는 방법이 가장 효과적인 하수 슬러지의 처리방법이라 할 것이며, 콘크리트 제품으로 개발하여 재활용함으로써 환경오염을 방지하고 경제적 효과를 가져올 수 있다면 더욱 좋을 것이다.Considering this, it is a method to solidify and safely treat sewage sludge mixed with bacteria and heavy metals in large quantities quickly and inexpensively, without requiring heat energy, killing bacteria and safely adsorbing industrial wastes and concrete products. The manufacturing method is the most effective method of treating sewage sludge, and it would be better if it could be developed and recycled into concrete products to prevent environmental pollution and bring economic effects.
또한, 제지슬러지는 펄프 및 제지공장 등에서 많이 발생되고 있으며 퇴비나 골재 등 다양한 용도로 활용할 수 있는 방안이 연구되고 있다. 제지슬러지 또한 인체에 유해한 중금속 등 유해물질을 포함하고 있어, 이를 단순히 매립하거나 소각하거나 해양투기하여 처리하는 방법은 환경오염에 악영향을 끼치게 된다.In addition, the paper sludge is generated in a lot of pulp and paper mills, etc., and research is being made for various applications such as compost and aggregates. Paper sludge also contains harmful substances such as heavy metals, which are harmful to the human body. Thus, the method of disposal by simply landfilling, incineration or ocean dumping has an adverse effect on environmental pollution.
한편, 국민 생활수준의 급속한 향상과 경제성장으로 인하여 우리나라의 하수슬러지와 제지슬러지 등의 폐기물의 배출은 계속 증가하고 있으며, 근래에 들어 폐기물의 효과적인 처리방법으로 재활용과 소각에 대한 관심이 높아지고 있으나 아직은 거의 대부분을 매립 및 해양투기에 의존하고 있는 실정이다.On the other hand, due to the rapid improvement in the standard of living and economic growth, the discharge of wastewater such as sewage sludge and paper sludge in Korea continues to increase, and in recent years, interest in recycling and incineration has been increasing as an effective treatment method of waste. Most rely on landfilling and dumping at sea.
또한, 폐주물사는 산업폐기물 분류상 유해폐기물로 분류되어 위생매립 등의 처리를 하여야 하나, 최근의 매립처분비용의 상승과 매립지의 부족 등으로 주물업자에게는 생산원가의 상승요인으로 작용하고 있다. 또한, 폐주물사를 매립하기 위한 매립장이 부족할 뿐더러 활용 가능한 유용자원을 폐기하여 자원을 낭비한다는 문제점이 있다. 더욱이, 폐주물사는 콘크리트용 모래와 거의 같은 특성이 있기 때문에 콘크리트용 재료로서 다양하게 재활용될 가능성이 있다는 특징이 있다.In addition, the waste founding company is classified as hazardous waste in the industrial waste classification and should be treated as sanitary landfill. However, the recent increase in the landfill disposal cost and the lack of landfills have contributed to the increase in the production cost for the founder. In addition, there is a shortage of landfill for landfilling waste foundry sand and there is a problem that waste resources by discarding the available useful resources. Moreover, since the waste foundry sand has almost the same characteristics as the sand for concrete, there is a feature that it may be recycled as a concrete material.
또한, 석재공장에서 발생하고 있는 석분 또한 적당한 처리방법이 없어 그 처리에 많은 어려움이 있고 그대로 방치되어 있는 경우가 많다.In addition, the stone powder generated in the stone factory also does not have a proper treatment method, there are many difficulties in the treatment and are often left as it is.
따라서, 하수슬러지, 제지슬러지, 폐주물사, 석분 등의 폐기물을 환경오염을 일으키지 않도록 경제적으로 재활용할 수 있는 방안이 절실히 필요하다. Therefore, there is an urgent need for a method that can economically recycle waste such as sewage sludge, paper sludge, waste foundry sand, and stone dust so as not to cause environmental pollution.
본 발명은 하수슬러지와 제지슬러지 등 폐기되는 슬러지에 함유된 세균을 사멸시키고 중금속을 흡착하며 슬러지를 단시간에 안정된 콘크리트 제품으로 제조할 수 있는 방법을 제공하는 것을 목적으로 한다.An object of the present invention is to provide a method for killing bacteria contained in waste sludge such as sewage sludge and paper sludge, adsorbing heavy metals, and producing sludge as a stable concrete product in a short time.
또한, 본 발명은 슬러지 등 폐기물을 이용하여 맨홀이나 친환경적인 해양 구조물로 다양하게 이용할 수 있는 콘크리트 제품을 제공하는 것을 목적으로 한다.In addition, an object of the present invention to provide a concrete product that can be variously used as a manhole or environmentally friendly marine structure using waste such as sludge.
또한, 본 발명의 목적은 하수슬러지, 제지슬러지, 석분 및 폐주물사 등의 산업 폐기물을 효과적으로 처리하여 자원을 재활용하여 자원의 낭비를 막고 환경 오염을 방지하는 것을 목적으로 한다.In addition, an object of the present invention is to effectively treat industrial waste, such as sewage sludge, paper sludge, stone powder and waste foundry sand to recycle resources to prevent waste of resources and to prevent environmental pollution.
또한, 본 발명은 현재 슬러지, 폐주물사, 석분 등의 산업 폐기물을 흙과 혼합하여 매립함으로써 생기는 분진 발생 및 침출수로 인한 지하수오염 등의 환경적 문제점을 효율적으로 처리하는데 목적이 있다.In addition, the present invention has an object to efficiently handle environmental problems such as dust generation and groundwater contamination due to leachate generated by landfill by mixing industrial waste such as sludge, waste foundry sand, stone powder.
상기와 같은 목적을 달성하기 위하여, 본 발명에 따른 슬러지를 이용한 콘크리트 제품의 제조방법은 시멘트 15~20중량%, 하수슬러지 및 제지슬러지 중 하나 이상을 포함하는 슬러지 15~20중량%, 황토 15~20중량% 및 생석회 5~10중량%를 혼합하고 여기에 모래 30~50중량%를 배합한 후 소정의 형상을 갖는 형틀을 이용하여 성형 하는 것을 특징으로 한다. In order to achieve the above object, the manufacturing method of the concrete product using the sludge according to the present invention is 15 to 20% by weight, 20 to 20% by weight of the sludge including one or more of cement, sewage sludge and paper sludge. 20% by weight and 5 to 10% by weight of quicklime are mixed and 30 to 50% by weight of sand is blended therein, and the molding is performed using a mold having a predetermined shape.
또한, 본 발명에 따른 콘크리트 제품의 제조방법은 상기 시멘트, 슬러지, 황토, 생석회 및 모래의 혼합물에 석분, 운모, 맥반석 및 숯 중에서 어느 하나 이상을 선택하여 첨가하는 것을 특징으로 하며, 상기 모래로서는 규사 또는 폐주물사를 이용할 수 있다.In addition, the method for producing a concrete product according to the present invention is characterized in that any one or more selected from the mixture of cement, sludge, loess, quicklime and sand is selected by adding at least one of stone dust, mica, ganban stone and charcoal, as sand sand Alternatively, waste foundry sand may be used.
이하, 본 발명에 따른 슬러지를 이용한 콘크리트 제품의 제조방법을 그 실시예를 들어 상세히 설명한다.Hereinafter, a method for producing a concrete product using sludge according to the present invention will be described in detail with reference to the examples.
본 발명에 따른 슬러지를 이용한 콘크리트 제품은 시멘트 15~20중량%, 하수슬러지 및/또는 제지슬러지 15~20중량%, 황토 15~20중량%, 생석회 5~10중량%를 혼합한 혼합물에 모래 30~50중량%를 배합하여 이루어진다.Concrete products using sludge according to the present invention is a sand 30 to a mixture of 15 to 20% by weight of cement, 15 to 20% by weight of sewage sludge and / or paper sludge, 15 to 20% by weight of ocher, 5 to 10% by weight of quicklime It consists of mix | blending -50 weight%.
상기와 같은 비율로 시멘트와, 슬러지, 황토, 및 생석회와 모래를 각 개량빈을 거쳐 믹서기로 혼합한 후, 소정의 형상을 갖는 형틀 등을 이용하여 원하는 형태의 콘크리트 제품을 제조한다.Cement, sludge, ocher, and quicklime and sand are mixed in each of the above-described improved bins through a mixer, and then a concrete product having a desired shape is manufactured using a mold having a predetermined shape.
본 발명에 의해 만들어지는 제품으로서는 예를 들면, 맨홀, 전신주, 인공어초, 수중구조물, 경계석, 보도블록, 하수관, 건축 내외장재 등이 될 수 있고, 이외에도 얼마든지 변형이 가능하여 다양한 용도로서의 사용이 가능하다.Products made by the present invention may be, for example, manholes, telegraph poles, artificial reefs, underwater structures, boundary stones, sidewalk blocks, sewer pipes, interior and exterior materials of the building, and other modifications can be used for various purposes. Do.
본 발명에 따른 콘크리트 제품을 제조하기 위해, 시멘트와, 슬러지, 황토, 및 생석회를 혼합한다. 이때, 혼합물의 구성성분 및 함유량은 중량%를 기준으로 대략적으로 시멘트:슬러지:황토:생석회가 약 3:3:3:1로 혼합하고 상기 혼합물에 모래 를 1: 0.6~1의 비율로 혼합하는 것이 바람직하며, 본 발명의 바람직한 실시예에 따르면 시멘트 18중량%, 슬러지 18중량%, 황토 18중량%, 생석회 6중량%를 혼합한 후 여기에 모래를 40중량% 혼합한다.To produce the concrete product according to the invention, cement and sludge, loess, and quicklime are mixed. At this time, the composition and content of the mixture is about 3% by weight of cement: sludge: ocher: quicklime based on the weight percent, and the sand is mixed with the mixture in a ratio of 1: 0.6-1. Preferably, according to a preferred embodiment of the present invention, 18% by weight of cement, 18% by weight of sludge, 18% by weight of ocher, 6% by weight of quicklime are mixed with 40% by weight of sand.
본 발명에서 사용하는 슬러지로서는 하수슬러지 및/또는 제지슬러지를 사용하는 것이 바람직하다. 상기 하수슬러지는 수처리 과정에서 발생하는 슬러지이고 제지슬러지는 제지 과정에서 발생하는 슬러지로서, 하수슬러지와 제지슬러지는 소각하지 않은 상태의 생 슬러지를 탈수한 상태의 것을 사용하며 함수율이 약 60~80%인 것을 사용하는 것이 바람직하다. 또한, 상기 슬러지는 하수슬러지와 제지슬러지를 혼합하여 사용할 수 있으며, 예를 들면, 하수슬러지와 제지슬러지를 2:1의 비율로 혼합하여 사용하는 것이 바람직하다.It is preferable to use sewage sludge and / or papermaking sludge as the sludge used in the present invention. The sewage sludge is sludge produced in the water treatment process, and the paper sludge is sludge produced in the papermaking process, and the sewage sludge and paper sludge are dehydrated raw sludge, and the water content is about 60 to 80%. It is preferable to use what is. In addition, the sludge may be used by mixing sewage sludge and papermaking sludge, for example, it is preferable to use a mixture of sewage sludge and papermaking sludge in a ratio of 2: 1.
본 발명에 따른 슬러지를 이용한 콘크리트 제품은 콘크리트 제품으로서 적정 압축강도인 50kgf/cm2를 충족하기 위해서, 전체 혼합물의 100 중량%에 대하여 시멘트량이 15중량% 이상 포함되는 것이 바람직하며, 약 18중량% 정도를 포함하는 것이 충분한 압축강도를 나타낸다.Concrete products using sludge according to the present invention is a concrete product, in order to meet the appropriate compressive strength of 50kgf / cm 2 , it is preferable that the amount of cement is included at least 15% by weight relative to 100% by weight of the total mixture, about 18% by weight Including the degree indicates sufficient compressive strength.
또한, 본 발명은 황토를 포함하는데, 이것은 슬러지에 포함되어 있는 중금속을 흡착하고 시멘트독을 제거하기 위해서이다. 황토는 약 15~20중량% 정도를 혼합하는데, 이것은 시멘트독을 제거하고 중금속을 흡착시키는 효과를 충분히 갖고 콘크리트 제품의 적정 pH를 유지하도록 하기 위해서이다.The present invention also includes loess, in order to adsorb heavy metals contained in the sludge and remove cement poisoning. Ocher mixes about 15 to 20% by weight in order to maintain the proper pH of concrete products with sufficient effect to remove cement poisons and adsorb heavy metals.
황토는 하수슬러지 및 제지슬러지에 함유된 중금속을 흡착하는데 매우 효과 적인데, 이러한 황토의 효능은 '슬러지를 이용하여 생산한 인공토양의 흡착 및 용출특성(1997, 건국대생명과학연구원 중점지원연구과제)', '갯벌과 황토에 의한 중금속(Cu, Cd, Pb)의 흡착 kinetics(1999, 군산대 수산과학연구소 연구과제)' 등의 여러 연구에서 밝혀져 있다.Loess is very effective in adsorbing heavy metals in sewage sludge and paper sludge.The effect of loess is' Adsorption and elution characteristics of artificial soil produced using sludge (1997, key support research project of Konkuk University) ',' Adsorption kinetics of heavy metals (Cu, Cd, Pb) by tidal-flat and loess' (1999, Research Institute of Fisheries Science, Kunsan National University) has been revealed.
또한, 슬러지에 함유되어 있는 세균을 살균시키고, 흡착되지 않은 중금속 등 위해물질이 지하수 및 토양에 오염되지 않도록 빠른 고형화를 위해 생석회(CaO)를 혼합한다. 생석회는 물과 반응하면 발열과 함께 수산화칼슘(Ca(OH)2)이 되어 슬러지 내에 함유된 세균을 사멸하고, 주변의 황토(S)와 만나 석고(CaSO4)가 되거나 황토 중의 철(Fe), 알루미늄(Al), 산화규소(SiO2) 등과 복합적 반응인 포졸란 반응을 통하여 더욱 강하게 굳어진다. In addition, sterilization of bacteria contained in the sludge, and mixed with quicklime (CaO) for rapid solidification so that harmful substances such as heavy metals that are not adsorbed are not contaminated with groundwater and soil. Quicklime reacts with water to produce calcium hydroxide (Ca (OH) 2 ) with heat, killing the bacteria contained in the sludge, and meeting with the surrounding ocher (S) to become gypsum (CaSO 4 ) or iron (Fe), It hardens more strongly through the pozzolanic reaction, which is a complex reaction with aluminum (Al) and silicon oxide (SiO 2 ).
또한, 황토가 물과 반응하면 각 입자 간의 응집 현상으로 약 6%의 체적감소 현상이 일어나며 이것이 균열의 주된 원인이 되나, 석회를 첨가하면 수화반응을 일으키면서 체적이 팽창되어 양자 간의 수축, 팽창 작용으로 균열을 억제하는 특징이 있다. 이를 고려하여 시멘트, 황토, 생석회의 혼합비율을 빠른 고화를 위해서 시멘트 구성비와 흡사한 CaO:Al2O3를 3:1로 맞춰 고착되도록 하였다. In addition, when ocher reacts with water, agglomeration between particles causes about 6% of volume reduction, which is the main cause of cracking, but when lime is added, hydration reaction causes volume to expand and contract and expand between them. This has the characteristic of suppressing cracks. In consideration of this, CaO: Al 2 O 3, which is similar to the cement composition ratio, was fixed to 3: 1 in order to rapidly solidify the mixing ratio of cement, loess and quicklime.
또한, 생석회는 슬러지 속에 포함되어 있는 세균이 60℃ 이내에서 사균되는 점을 감안하여 혼합하였으며, 시멘트의 성분구성 CaO:Al2O3의 비율인 3:1로 맞추기 위한 필수적 요건을 충족시키면서 물과 혼합으로 인한 발열시 온도가 80℃ 이상인 점을 감안한 것이다.In addition, quicklime was mixed in consideration of the fact that bacteria contained in the sludge were killed within 60 ° C, and water and water were satisfied while satisfying the essential requirement of 3: 1, which is the ratio of CaO: Al 2 O 3 . Considering that the temperature during heating due to mixing is 80 ° C or higher.
즉, 본 발명에 따른 콘크리트 제품은 콘크리트 제품으로서의 적정 압축강도를 유지하고, 중금속 흡착 및 살균효과와 고화시간의 단축 및 적정 pH 등을 고려하여 시멘트, 생슬러지, 황토 및 생석회를 혼합하였으며, 그 혼합비율은 약 3:3:3:1 정도로 하는 것이 바람직하다.That is, the concrete product according to the present invention maintains the proper compressive strength as a concrete product, mixed with cement, fresh sludge, ocher and quicklime in consideration of heavy metal adsorption and sterilization effect, shortening the solidification time and proper pH, etc. The ratio is preferably about 3: 3: 3: 1.
본 발명의 바람직한 실시예에서는 콘크리트 제품으로서의 적정 압축 강도를 유지하기 위해서 본 발명에서는 시멘트를 18중량%를 생슬러지 18중량%에 혼합하고, 슬러지에 함유되어 있는 세균을 사멸하고 중금속을 흡착시키기 위하여 황토 18중량%를 혼합하였으며, 살균 및 압축강도를 유지하기 위해 생석회를 6중량% 혼합하였고, 여기에 규사를 40중량% 혼합하였다. In a preferred embodiment of the present invention, in order to maintain an appropriate compressive strength as a concrete product, in the present invention, 18% by weight of cement is mixed with 18% by weight of fresh sludge, and yellow soil is used to kill bacteria contained in the sludge and adsorb heavy metals. 18% by weight was mixed, 6% by weight of quicklime was mixed to maintain sterilization and compressive strength, and 40% by weight of silica sand was mixed thereto.
상기와 같이, 시멘트, 황토, 생슬러지, 및 생석회를 혼합한 혼합물에, 모래를 약 1 : 0.6~1의 비율로 혼합하여 성형틀 등에 넣고 원하는 형태의 콘크리트 제품을 제조한다.As described above, sand, in a mixture of cement, loess, fresh sludge, and quicklime, is mixed at a ratio of about 1: 0.6 to 1, and put into a molding mold to produce a concrete product of a desired shape.
한편, 폐주물사는 현재 흙과 1:1의 비율로 혼합하여 매립하고 있는데, 이는 분진이 발생하고 침출수로 인하여 한 지하수가 오염되는 등의 문제점이 있다. 이러한 환경오염 문제를 방지하도록 폐주물사를 효과적으로 처리하는 방안으로서, 본 발명에서는 시멘트, 황토, 슬러지, 및 생석회를 혼합한 혼합물에, 모래로서 폐주물사를 사용할 수 있다. 이것은 폐주물사가 콘크리트용 모래와 거의 같은 성분 및 특성이 있기 때문이며, 이로 인하여 폐기물인 폐주물사를 효과적으로 처리함과 동시에 이를 환경친화적으로 재생할 수 있다는 장점이 있다.On the other hand, the waste foundry sand is currently mixed with land in a ratio of 1: 1, which has problems such as dust is generated and one groundwater is contaminated by leachate. As a method of effectively treating the waste foundry sand to prevent such environmental pollution problem, in the present invention, the waste foundry sand may be used as a sand in a mixture of cement, loess, sludge, and quicklime. This is because the waste foundry sand has the same composition and characteristics as the concrete sand, thereby having the advantage that it can effectively treat the waste foundry sand, which can be recycled environmentally.
또한, 본 발명에 따르면 상기 콘크리트 제품에는 원적외선을 방사하고 항균 및 탈취 작용을 하는 운모, 맥반석, 숯 등 인체에 유효한 성분을 첨가함으로써 보다 기능성이 있는 제품을 제조할 수 있다. 즉, 본 발명에서는 콘크리트 제품 제조시에 석분, 운모, 맥반석 및 숯 중에서 어느 하나 이상을 선택하여 첨가할 수 있다. 이때 시멘트, 슬러지, 황토, 생석회, 모래를 포함하여 이루어지는 혼합물 100 중량부에 대하여 첨가되는 석분, 운모, 맥반석 및 숯 중에서 선택되는 물질은 전체 혼합물의 특성을 크게 변화시키지 않으면서도 첨가되는 재료의 기능이 충분히 나타나도록 하기 위하여 약 1~10 중량부를 첨가하는 것이 바람직하다.In addition, according to the present invention, by adding an effective component to the human body, such as mica, elvan, charcoal, which emits far infrared rays and has antibacterial and deodorizing effects, the concrete product can be manufactured with more functional products. That is, in the present invention, at least one of stone powder, mica, ganban stone and charcoal may be selected and added at the time of manufacturing concrete products. At this time, the material selected from stone powder, mica, elvan, and charcoal added to 100 parts by weight of the mixture including cement, sludge, loess, quicklime, and sand does not significantly change the properties of the mixture. It is preferable to add about 1 to 10 parts by weight in order to sufficiently appear.
특히, 석재공장에서 발생하는 석분에 의한 분진은 인근지역에 공해를 유발하고 많은 민원이 발생하는데 그 적당한 처리방법이 없어 골머리를 앓고 있으며, 본 발명에서는 이와 같은 석분을 첨가하여 석분을 친환경적으로 처리함과 동시에 재활용할 수 있다.In particular, dust caused by stone powder generated in stone factories causes pollution in nearby areas and causes many complaints. There is no proper treatment method and suffers from headaches. And can be recycled at the same time.
실시예Example
본 발명의 바람직한 실시예에 따른 슬러지를 이용한 콘크리트 제품의 구성 성분 및 함유량이 하기 표 1에 기재되어 있으며, 본 발명에 사용된 각 원료별 화학적 성분이 표 2에 기재되어 있다.The composition and content of the concrete product using the sludge according to the preferred embodiment of the present invention are described in Table 1 below, and the chemical composition of each raw material used in the present invention is described in Table 2.
한편, 하기 표 3에는 본 발명의 일실시예에 따른 콘크리트 제품의 압축강도를 실험한 예가 기재되어 있다.On the other hand, Table 3 below describes an example of testing the compressive strength of the concrete product according to an embodiment of the present invention.
상기 표에서 보는 바와 같이, 본 발명에 따른 콘크리트 제품은 콘크리트 제품으로서의 적정 압축강도인 0.5 kg/m2이상을 보이고 있어, 하수슬러지 및 폐주물사 등 폐기물의 효과적인 처리와, 살균 및 중금속의 흡착 등의 우수한 효과를 나타내면서 환경친화적인 재활용 제품으로서 활용이 가능하다.As shown in the above table, the concrete product according to the present invention exhibits an optimum compressive strength of 0.5 kg / m 2 or more as a concrete product, and is effective in treating waste such as sewage sludge and waste foundry sand, and excellent in sterilization and adsorption of heavy metals. It can be used as an environmentally friendly recycling product while showing an effect.
또한, 상기 실시예에 각각 석분, 운모, 맥반석, 및 숯을 첨가하여 콘크리트 제품을 제조하여 보았는바, 그 제품 강도 등의 특성에 큰 영향을 끼치지 아니하고 각 성분의 유효한 기능을 그대로 나타내며 또한 원적외선 방사 및 항균 탈취 등의 기능성을 갖춘 제품을 제조할 수 있었다.In addition, when the concrete product was prepared by adding stone powder, mica, ganban stone, and charcoal to the above examples, the effective function of each component was shown as it is without affecting the properties such as the strength of the product. And it was possible to manufacture a product having a functional such as antibacterial deodorization.
이상에서 설명한 바와 같이, 본 발명에 따른 하수슬러지 및/또는 제지슬러지를 이용한 콘크리트 제품을 제조함으로써 폐기물인 슬러지를 효과적으로 처리하여 해양투기와 매립비용을 줄이고 친환경적인 제품을 제조할 수 있다는 효과가 있다.As described above, by producing a concrete product using sewage sludge and / or paper sludge according to the present invention there is an effect that can effectively treat the sludge as waste to reduce marine dumping and landfill costs and produce environmentally friendly products.
또한, 본 발명은 황토를 혼합하여 슬러지에 포함된 중금속을 효과적으로 흡착시켜 지하수나 토양이 오염되는 것을 방지함으로써 환경을 보호할 수 있다는 효과가 있다.In addition, the present invention is effective by adsorbing heavy metals contained in the sludge by mixing ocher to effectively protect the environment by preventing contamination of groundwater or soil.
또한, 본 발명은 콘크리트독 등이 제거되고 충분한 강도를 나타내어 친환경적인 해양 구조물이나 어초 등으로도 충분히 이용할 수 있다는 효과가 있다. In addition, the present invention has the effect that the concrete dock is removed and exhibits sufficient strength, so that it can be sufficiently used as an environmentally friendly marine structure or fish pond.
상술한 바와 같이, 본 발명은 슬러지를 이용하여 여기에 시멘트, 황토 및 생석회를 혼합하고 다시 모래를 혼합하여 제조한 콘크리트 제품에 관한 것으로, 본 발명의 사상 및 범주를 벗어나지 않는 범위 내에서 다양한 변경 및 변형이 가능할 것이다.As described above, the present invention relates to a concrete product prepared by mixing cement, loess and quicklime with sludge and then sand again, and various modifications and changes within the spirit and scope of the present invention. Modifications may be possible.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2463310A (en) * | 2008-09-03 | 2010-03-17 | Cenin Ltd | A method of forming concrete containing waste paper sludge |
| KR101357829B1 (en) | 2013-04-16 | 2014-02-06 | (주)서해산업개발 | Recycling material of industrial sludge for use of fill material, cover material and subbase material and method for producing the same |
| KR101376546B1 (en) * | 2012-10-24 | 2014-03-20 | 한국건설생활환경시험연구원 | Manufacturing method for clay block and clay block thereby |
| CN104072029A (en) * | 2014-01-20 | 2014-10-01 | 山东大学（威海） | Efficient artificial algal reef using tidal flat mud as raw material and preparation method of efficient artificial algal reef |
| KR101558046B1 (en) * | 2013-09-09 | 2015-10-07 | 임채영 | Composition of flat material for soundproofing and dampproofing and Method for making paste of flat material |
| KR101650277B1 (en) * | 2015-09-18 | 2016-08-22 | 김성회 | Manufacturing method for aquatic animal/plant protection block having green algae prevention function and aquatic animal/plant protection block thereof |
| KR101967231B1 (en) | 2018-07-26 | 2019-04-09 | 주식회사 샌드네이처 | Manufacturing method for recycled aggregate using sludge and concrete products thereof |
| CN112110688A (en) * | 2020-09-18 | 2020-12-22 | 唐山中陶纪元工程设计有限公司 | Light telegraph pole and production process thereof |
| KR20220111502A (en) * | 2021-02-02 | 2022-08-09 | 주식회사 이노씨에스알 | mortar composition using granite sludge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20030017914A (en) * | 2001-08-25 | 2003-03-04 | 김준식 | Solidification treatment method for sludge of waste water and sewage |
| KR20060007720A (en) * | 2004-07-21 | 2006-01-26 | 조대연 | The composition of construction materials using waterworks sludge |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030017914A (en) * | 2001-08-25 | 2003-03-04 | 김준식 | Solidification treatment method for sludge of waste water and sewage |
| KR20060007720A (en) * | 2004-07-21 | 2006-01-26 | 조대연 | The composition of construction materials using waterworks sludge |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2463310A (en) * | 2008-09-03 | 2010-03-17 | Cenin Ltd | A method of forming concrete containing waste paper sludge |
| KR101376546B1 (en) * | 2012-10-24 | 2014-03-20 | 한국건설생활환경시험연구원 | Manufacturing method for clay block and clay block thereby |
| KR101357829B1 (en) | 2013-04-16 | 2014-02-06 | (주)서해산업개발 | Recycling material of industrial sludge for use of fill material, cover material and subbase material and method for producing the same |
| KR101558046B1 (en) * | 2013-09-09 | 2015-10-07 | 임채영 | Composition of flat material for soundproofing and dampproofing and Method for making paste of flat material |
| CN104072029A (en) * | 2014-01-20 | 2014-10-01 | 山东大学（威海） | Efficient artificial algal reef using tidal flat mud as raw material and preparation method of efficient artificial algal reef |
| CN104072029B (en) * | 2014-01-20 | 2015-09-09 | 山东大学（威海） | A kind of take mudflat sludge as high-efficiency artificial algal reef of raw material and preparation method thereof |
| KR101650277B1 (en) * | 2015-09-18 | 2016-08-22 | 김성회 | Manufacturing method for aquatic animal/plant protection block having green algae prevention function and aquatic animal/plant protection block thereof |
| KR101967231B1 (en) | 2018-07-26 | 2019-04-09 | 주식회사 샌드네이처 | Manufacturing method for recycled aggregate using sludge and concrete products thereof |
| CN112110688A (en) * | 2020-09-18 | 2020-12-22 | 唐山中陶纪元工程设计有限公司 | Light telegraph pole and production process thereof |
| KR20220111502A (en) * | 2021-02-02 | 2022-08-09 | 주식회사 이노씨에스알 | mortar composition using granite sludge |
| KR102473751B1 (en) * | 2021-02-02 | 2022-12-05 | 주식회사 이노씨에스알 | mortar composition using granite sludge |
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