KR20060017961A - Lightweight artificial soil and its manufacturing method by using waste - Google Patents
Lightweight artificial soil and its manufacturing method by using waste Download PDFInfo
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Abstract
본 발명은 폐기물을 이용한 녹화용 경량 인공토 및 그 제조방법에 관한 것으로, 정수 슬러지 케익, 고온에서 열처리된 슬러지, 소각 비산재, 점토, 수산화나트륨, 산화철 및 탄산나트륨의 조성물을 교반 혼합한 다음 건조한 상태에서 단시간 소성, 발포하여 제조하는 것이다.The present invention relates to a lightweight artificial earth for greening using waste and a method for manufacturing the same, wherein the composition of purified sludge cake, sludge heat-treated at high temperature, incineration fly ash, clay, sodium hydroxide, iron oxide and sodium carbonate are mixed under agitation and dried. It is produced by baking for a short time and foaming.
상기 본 발명은 폐기물을 활용한 경량 인공토양으로서, 흡수력이나 양이온 치환능력 등 녹화용 성능이 우수하여, 전량 수입에 의존하는 펄라이트 등의 옥상 녹화용 경량소재의 수입 대체효과와 함께, 국제협약 등에 의한 매립이나 해양 투기금지, 매립지 부족, 환경오염의 문제를 획기적으로 해결할 수 있고 폐기물을 이용한 자원의 효율적인 재활용이 가능하다.The present invention is a lightweight artificial soil utilizing waste, excellent in greening performance, such as absorption capacity and cation substitution ability, along with the import replacement effect of roofing greening lightweight materials, such as pearlite, depending on the total import, according to international agreements, etc. It can solve the problems of landfill, ocean dumping, landfill shortage, environmental pollution, and the efficient recycling of resources using waste.
폐기물, 이용, 녹화, 경량, 인공토, 제조방법, 정수, 슬러지, 케익, 재활용Waste, Use, Greening, Lightweight, Artificial Earth, Manufacturing Method, Water Purification, Sludge, Cake, Recycling
Description
도1은 본 발명의 녹화용 경량 인공토의 제조 과정 설명도1 is an explanatory view of the manufacturing process of the light-weight artificial earth for greening of the present invention
도2는 본 발명의 녹화용 경량 인공토의 XRD 패턴을 나타낸 도면Figure 2 is a view showing the XRD pattern of the lightweight artificial earth for greening of the present invention
도3은 본 발명의 녹화용 경량 인공토의 주사전자현미경 사진Figure 3 is a scanning electron micrograph of a light-weight artificial earth for greening of the present invention
본 발명은 폐기물을 이용한 녹화용 경량 인공토 및 그 제조방법에 관한 것으로, 좀더 상세하게는 정수 슬러지 케익, 고온에서 열처리된 슬러지, 소각 비산재, 점토, 수산화나트륨, 산화철 및 탄산나트륨의 조성물을 교반 혼합한 다음 건조한 상태에서 단시간 소성, 발포하여 제조하는 것이다.The present invention relates to a light-weight artificial earth for greening using waste and a method of manufacturing the same, and more specifically, a mixture of purified sludge cake, sludge heat-treated at high temperature, incineration fly ash, clay, sodium hydroxide, iron oxide, and sodium carbonate. Then it is prepared by firing and foaming for a short time in a dry state.
상기 본 발명은 폐기물을 활용한 경량 인공토양으로서, 흡수력이나 양이온 치환능력 등 녹화용 성능이 우수하여, 전량 수입에 의존하는 펄라이트 등의 옥상 녹화용 경량소재의 수입 대체효과와 함께, 국제협약 등에 의한 매립이나 해양 투기금지, 매립지 부족, 환경오염의 문제를 획기적으로 해결할 수 있고 폐기물을 이용한 자원의 효율적인 재활용이 가능하다.The present invention is a lightweight artificial soil utilizing waste, excellent in greening performance, such as absorption capacity and cation substitution ability, along with the import replacement effect of roofing greening lightweight materials, such as pearlite, depending on the total import, according to international agreements, etc. It can solve the problems of landfill, ocean dumping, landfill shortage, environmental pollution, and the efficient recycling of resources using waste.
산업이 발달하면서 이와 더불어 가정이나 산업현장 각 분야에서 폐기물이나 슬러지가 다량 배출되고 있다.As the industry develops, a large amount of waste and sludge are emitted from home and industrial fields.
이와 같이 불가피하게 배출되고 있는 폐기물이나 슬러지 들은 극히 일부만 처리, 재활용되고 있을 뿐 상당한 량이 그대로 방치 혹은 무단 폐기되거나 적절한 처리방법을 찾지 못하고 시간이 지나면서 계속 누적이 되어 심각한 사회적, 환경적 문제로 되고 있다.These wastes and sludges that are inevitably discharged are only partially treated and recycled, but a considerable amount is left unattended or illegally discarded or accumulated over time, causing serious social and environmental problems. .
예컨대, 하수슬러지의 경우 최근(2004년 7월) 전면 매립이 금지된 상태이고, 국제협약에 의한 해양투기도 머지 않아 금지될 상황이어서, 슬러지류를 처리하는 문제는 국가적 문제가 아닐 수 없다. For example, sewage sludge has recently been banned from being completely reclaimed (July 2004), and dumping of seawater under international agreements will soon be banned, so the treatment of sludge is a national issue.
또한, 소각장 비산재의 경우도 특정폐기물로서 고가에 처리, 매립되고 있어 최근에는 고온 소성, 용융 등의 방법이 검토되고 있는 실정이다.Incidentally, incinerator fly ash is also treated and buried as a specific waste at a high price. Recently, methods such as high temperature firing and melting have been studied.
국내에서 이러한 폐기물이나 슬러지 등을 이용하여 제올라이트를 제조하는 기술이 일부 공개되고 있으나, 화산석(펄라이트)과 같은 수입원료가 첨가되거나 혹은 본래의 개발품외에 다른 보완재의 의존도가 높은 경우가 다수이다.Some techniques for manufacturing zeolites using such wastes or sludges have been disclosed in Korea, but imported raw materials such as volcanic stone (pearlite) are added, or many of them depend on other supplements in addition to the original development products.
또한, 슬러지 하소분을 그대로 농업용 인공토로 혼합하는 방법들도 있으나, 무게가 경량이라 할 수 없고, 다공성 정도 및 강도가 부족하며, 중금속 등 장기안정성 면에서 좀더 검토가 필요하다.In addition, there is also a method of mixing the sludge calcined powder into artificial artificial soil as it is, but the weight is not lightweight, the degree of porosity and strength is lacking, and in terms of long-term stability, such as heavy metals need further review.
더욱이, 폐기물인 슬러지와 소각 비산재를 주원료로 하고, 소성 발포과정에서 내부에 제올라이트상과 미연탄소분을 인위적으로 생성시키되, 물리화학적으로 강하게 결속되어있어 이탈, 분리 등에 의한 성능저하가 없는 고성능의 녹화용 경량 인공토를 제조한 예는 전무한 실정이다.Moreover, the main raw materials are sludge and incineration fly ash, which are wastes, and artificially generate zeolite phase and unburned carbon powder in the process of plastic foaming, but are strongly bound physically and chemically so that there is no deterioration of performance due to separation or separation. There are no examples of manufacturing lightweight artificial earth.
따라서, 본 발명에서는 상기 종래의 기술을 감안하여 이루어진 것으로, 흡수력이나 양이온 치환능력 등 녹화용 성능이 우수하여, 전량 수입에 의존하는 펄라이트 등의 옥상 녹화용 경량소재의 수입 대체효과와 함께, 국제협약 등에 의한 매립이나 해양 투기금지, 매립지 부족, 환경오염의 문제를 획기적으로 해결할 수 있고 폐기물을 이용한 자원의 효율적인 재활용이 가능한 새로운 형태의 폐기물을 이용한 녹화용 경량 인공토 및 그 제조방법을 제공하고자 한다.Accordingly, the present invention has been made in view of the above-mentioned conventional technology, and has excellent importing performance such as absorption ability and cation substitution ability, and has an international replacement agreement with the import substitution effect of lightweight roofing material such as pearlite, which relies on the total import. To solve the problems of landfilling, ocean dumping, landfill shortage, environmental pollution, etc., and to recycle the resources using waste materials, we will provide a new type of light artificial earth for greening and its manufacturing method.
이하, 본 발명의 구성에 대해 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated.
본 발명은 정수 슬러지 케익, 고온에서 열처리된 슬러지, 소각 비산재, 점토, 수산화나트륨, 산화철 및 탄산나트륨의 조성물을 교반 혼합한 다음 건조한 상태에서 단시간 소성, 발포하여 제조하는 것이 특징이다.The present invention is characterized in that the composition of purified sludge cake, sludge heat-treated at high temperature, incineration fly ash, clay, sodium hydroxide, iron oxide and sodium carbonate are mixed by stirring and then fired and foamed in a dry state for a short time.
좀더 구체적으로는 정수 슬러지 케익 45-60중량%, 600-700℃에서 열처리된 슬러지 10-15중량%, 소각 비산재 10-25중량%, 점토 10-25중량%, 수산화나트륨 0.5-5중량%, 산화철 0.5-3중량% 및 탄산나트륨 0.5-3중량%의 조성물을 교반 혼합한 다음 건조한 상태에서 900-1,200℃에서 5-20분간 단시간 소성, 발포하여 제조하는 것이다.More specifically, 45-60% by weight of purified sludge cake, 10-15% by weight of sludge heat-treated at 600-700 ° C, 10-25% by weight of incineration fly ash, 10-25% by weight of clay, 0.5-5% by weight of sodium hydroxide, 0.5-3% by weight of iron oxide and 0.5-3% by weight of sodium carbonate are mixed by stirring, and then dried and fired for 5-20 minutes at 900-1,200 ° C. in a dry state.
상기와 같이 본 발명의 녹화용 경량 인공토 및 그 제조방법에 있어서는, 정수 슬러지, 쓰레기 소각재 등의 폐기물이 주성분이며, 첨가제로 점토, 수산화나트 륨, 탄산나트륨 등이 소량 첨가된다. As described above, in the light-weight artificial earth for greening of the present invention and its manufacturing method, wastes such as purified water sludge and waste incineration ash are main components, and a small amount of clay, sodium hydroxide, sodium carbonate and the like are added as additives.
이 혼합물을 혼합·성형·건조한 후 900~1200℃의 소성온도에서 발포과정을 거친다. 이 과정에서 소성체 내부에 제올라이트 및 미연 탄소분을 인위적으로 형성시켜 그 자체로도 흡수율, 양이온 치환능, 토압 강도 등의 특성이 우수한 고기능 경량 인공토의 제조가 가능하다. The mixture is mixed, molded and dried and then foamed at a firing temperature of 900-1200 ° C. In this process, zeolite and unburned carbon powder may be artificially formed inside the calcined body, thereby making it possible to manufacture a high-performance lightweight artificial earth having excellent properties such as absorption rate, cation substitution ability, earth pressure strength, and the like.
폐기물로 배출되어 문제가 되고 있는 슬러지류와 쓰레기 소각재 등을 부가가치가 높은 녹화용 경량 인공토로 재활용하는데 효과적인 방법인 것이다.It is an effective way to recycle sludges and waste incinerators, which are discharged as wastes, into high value-added lightweight artificial earth.
여기서, 쓰레기 소각시 배출되는 비산재는 CaO인 석회질 원료 기능을 하며, 수산화나트륨, 탄산나트륨 등과 함께 제올라이트를 형성하는데 도움을 준다.Here, the fly ash discharged during incineration of the garbage functions as a CaO lime raw material, and helps to form a zeolite together with sodium hydroxide, sodium carbonate and the like.
도1는 상기한 바의 본 발명의 녹화용 경량 인공토의 제조 과정을 설명하는 제조과정 설명도를 나타내고 있다.Figure 1 shows a manufacturing process explanatory diagram for explaining the manufacturing process of the light weight artificial earth for greening of the present invention as described above.
이하, 실시예를 통하여 본 발명의 구성을 좀더 상세히 설명한다.Hereinafter, the configuration of the present invention through the embodiment in more detail.
실시예Example
정수 슬러지 케익 50Kg, 650℃에서 열처리된 슬러지 10Kg, 소각 비산재 17Kg, 점토 16Kg, 수산화나트륨 3kg, 산화철 2Kg 및 탄산나트륨 2Kg를 혼합기에 넣고 교반 혼합하였다.Water purification sludge cake 50Kg, sludge heat treated at 650 ℃ 10Kg, incineration fly ash 17Kg, clay 16Kg, sodium hydroxide 3kg, iron oxide 2Kg and sodium carbonate 2Kg into the mixer and stirred and mixed.
적당하게 표면이 건조된 상태에서 1000℃의 온도에서 10분간 단시간 소성, 발포하였다.In the state where the surface was suitably dried, it baked and foamed for 10 minutes at the temperature of 1000 degreeC for a short time.
도2는 이렇게 하여 얻어진 본 발명의 녹화용 경량 인공토의 XRD 패턴을 나타 낸 도면으로서, X선 회절분석결과, 인공 제올라이트가 잔존하고 있음을 확인할 수 있었다.Fig. 2 shows the XRD pattern of the light weight artificial earth for greening of the present invention thus obtained. As a result of X-ray diffraction analysis, it was confirmed that artificial zeolite remained.
또한, 도3은 이렇게 하여 얻어진 본 발명의 녹화용 경량 인공토의 주사전자현미경 사진으로서, 제올라이트 및 미연 탄소가 혼재되어 있음을 알 수 있는데, 이는 양이온 치환능, 흡수율 등을 향상시키는 기능을 한다.3 is a scanning electron micrograph of the light-weight artificial earth for greening of the present invention thus obtained, which shows that zeolite and unburned carbon are mixed, which functions to improve cation substitution ability, water absorption, and the like.
상기 실시예에서 얻어진 본 발명의 녹화용 경량 인공토의 물리적 성능을 하기 표1에 나타낸다.The physical performance of the lightweight artificial earth for greening of the present invention obtained in the above embodiment is shown in Table 1 below.
상기 표에서 알 수 있는 바와 같이, 본 발명의 녹화용 경량 인공토는 모든 항목에서 중금속 용출에 대하여 안정하다는 결과를 나타낸다.As can be seen from the above table, the lightweight artificial earth for greening of the present invention shows that all items are stable against heavy metal dissolution.
또한, 상기 실시예에서 얻어진 본 발명의 녹화용 경량 인공토의 물리적 성능을 하기 표2에 나타낸다.In addition, the physical performance of the lightweight artificial earth for greening of the present invention obtained in the above embodiment is shown in Table 2 below.
이와 같이 제조된 본 발명의 폐기물을 이용한 녹화용 경량 인공토는 다음과 같은 특징이 있다.Lightweight artificial earth for greening using the waste of the present invention prepared as described above has the following characteristics.
1. 폐기물인 슬러지와 소각 비산재를 주원료로 하고, 소성 발포과정에서 내부에 제올라이트상과 미연 탄소분을 인위적으로 생성시키되, 물리화학적으로 강하게 결속되어 있어 이탈, 분리 등에 의한 성능저하가 없는 고성능의 녹화용 경량 인공토이다.1. High-performance greening for sludge and incineration fly ash, which are wastes and artificially generate zeolite and unburned carbon in the process of firing and foaming, but are strongly bound physically and chemically, without deterioration or separation. It is a lightweight artificial earth.
2. 소성 발포과정으로 제조되는 경량 인공토는 자체에 기공이 상당히 많은 구조(밀도 0.3~0.5)를 가지고 있어, 물리적 강도, 흡수능, 경량도가 우수하며, 동시에 내부에 제올라이트 및 미연 탄소분(활성탄 기능 부가)의 기능이 추가되어 양이온 치환능이 향상된 우수한 경량 인공토로 사용될 수 있다.2. Lightweight artificial soil manufactured by plastic foaming process has a structure (density 0.3 ~ 0.5) with many pores on its own, so it has excellent physical strength, absorption capacity and light weight, and at the same time zeolite and unburned carbon powder (active carbon function) It can be used as an excellent lightweight artificial earth with the addition of the function of addition) with improved cation substitution ability.
3. 전량 수입에 의존하는 녹화용 경량 소재의 수입을 대체하는 기술이다.3. It is a technology that replaces the import of light weight material for greening, which depends on the total import.
4. 정·하수 처리장에서 배출되는 슬러지를 1/5~1/10 정도로 크게 감량화가 가능하다.4. It is possible to reduce the sludge discharged from the water and sewage treatment plant to 1/5 ~ 1/10.
5. 고온 열처리 단계에서 중금속 등이 고용체화 되어 환경적으로 상당히 안 정해 진다.5. In the high temperature heat treatment step, heavy metals are solid solution and environmentally considerably stable.
6. 폐기물 처리비 지출을 생산원가 절감에 활용할 수 있는 폐자원을 이용하는 경제적인 기술이다.6. It is an economical technique that uses waste resources that can use waste disposal expenses to reduce production costs.
7. 첨가제 및 소성 조건에 따른 인공토 성능 조절이 가능하며, 간단한 분쇄공정에 의한 입도 조절이 용이하여, 용도에 따른 다양한 인공 토양을 제조할 수 있다.7. It is possible to control the performance of artificial soil according to additives and firing conditions, and it is easy to control the particle size by a simple grinding process, so that various artificial soils can be manufactured according to the use.
이상 설명한 바와 같이, 본 발명에 따르면 정수 슬러지 케익, 고온에서 열처리된 슬러지, 소각 비산재, 점토, 수산화나트륨, 산화철 및 탄산나트륨의 조성물을 교반 혼합한 다음 건조한 상태에서 단시간 소성, 발포하여 제조함으로써, 흡수력이나 양이온 치환능력 등 녹화용 성능이 우수하여, 전량 수입에 의존하는 펄라이트 등의 옥상 녹화용 경량소재의 수입 대체효과와 함께, 국제협약 등에 의한 매립이나 해양 투기금지, 매립지 부족, 환경오염의 문제를 획기적으로 해결할 수 있고 폐기물을 이용한 자원의 효율적인 재활용이 가능하여, 관련 분야에의 이용 및 응용이 기대된다 하겠다.As described above, according to the present invention, the composition of purified sludge cake, sludge heat-treated at high temperature, incineration fly ash, clay, sodium hydroxide, iron oxide and sodium carbonate is prepared by stirring and mixing in a dry state for short time firing and foaming, It has excellent performance for greening such as cation substitution ability and import substitution effect of roofing greening lightweight materials such as pearlite, which depend on the total amount of import, and breakthroughs such as landfill, marine dumping, lack of landfill, environmental pollution due to international agreement etc. It is possible to solve this problem, and it is possible to efficiently recycle resources using waste, and it is expected to be used and applied in related fields.
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| KR101491184B1 (en) | 2009-12-04 | 2015-02-06 | 현대자동차주식회사 | Sheet staining fabric sheet and method testing stain of fabric sheet using thereof |
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| KR19980074216A (en) * | 1997-03-22 | 1998-11-05 | 박석천 | Artificial soil |
| KR19990014544A (en) * | 1998-11-21 | 1999-02-25 | 최성찬 | Manufacturing method of building materials using sludge from fluoric acid wastewater |
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