KR100568931B1 - High performance lightweight artificial soil using sludge and its manufacturing method - Google Patents
High performance lightweight artificial soil using sludge and its manufacturing method Download PDFInfo
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- KR100568931B1 KR100568931B1 KR1020040066256A KR20040066256A KR100568931B1 KR 100568931 B1 KR100568931 B1 KR 100568931B1 KR 1020040066256 A KR1020040066256 A KR 1020040066256A KR 20040066256 A KR20040066256 A KR 20040066256A KR 100568931 B1 KR100568931 B1 KR 100568931B1
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- 239000010802 sludge Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000002689 soil Substances 0.000 title abstract description 16
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000010457 zeolite Substances 0.000 claims abstract description 35
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000010304 firing Methods 0.000 claims abstract description 9
- 238000005187 foaming Methods 0.000 claims abstract description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- 239000004927 clay Substances 0.000 claims abstract description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 7
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 13
- 230000008676 import Effects 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 239000003562 lightweight material Substances 0.000 abstract description 6
- 238000005341 cation exchange Methods 0.000 abstract description 5
- 229910001562 pearlite Inorganic materials 0.000 abstract description 5
- 238000006467 substitution reaction Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000010169 landfilling Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 4
- 229910052570 clay Inorganic materials 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000002441 X-ray diffraction Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000007088 Archimedes method Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001768 cations Chemical group 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
- C01B33/28—Base exchange silicates, e.g. zeolites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Geology (AREA)
- Treatment Of Sludge (AREA)
Abstract
본 발명은 슬러지를 이용한 고기능 경량 인공토 및 그 제조방법에 관한 것으로, 슬러지를 소정의 과정을 거쳐 생산한 제올라이트와 산화철, 황산나트륨, 탄산칼슘, 점토 및 슬러지 케익을 교반 혼합한 다음 고온에서 단시간 소성, 발포하여 제조하는 것이다.The present invention relates to a high-performance lightweight artificial earth using sludge, and a method for manufacturing the same, wherein the zeolite produced by the sludge is subjected to a predetermined process, and mixed with agitated iron oxide, sodium sulfate, calcium carbonate, clay, and sludge cake, and then calcined at a high temperature for a short time, It is prepared by foaming.
상기 본 발명은 폐기물로 버려진 슬러지(하수, 정수 등)를 활용한 경량 인공토양으로서, 슬러지로부터 제조된 제올라이트를 경량 인공토 내에 함침시켜 양이온 교환능 및 흡수능을 크게 향상시켜 부가가치가 높은 상품으로 개발함으로써, 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 sludge (sewage, water purification, etc.) discarded as waste, by impregnating the zeolite prepared from the sludge into a lightweight artificial soil to greatly improve the cation exchange capacity and absorption capacity, by developing into a high value-added product, In addition to the import substitution effect of roofing greening lightweight materials such as pearlite, which rely on the total amount of imports, it is possible to drastically solve the problems of landfilling, ocean dumping, landfill shortage, and environmental pollution caused by international agreements and efficient recycling of resources using waste. This is possible.
슬러지, 이용, 고기능, 경량, 인공토, 제조방법, 제올라이트, 소성, 발포Sludge, utilization, high performance, light weight, artificial earth, manufacturing method, zeolite, firing, foaming
Description
도1은 본 발명의 경량 인공토의 제조 과정 설명도1 is an explanatory view of the manufacturing process of the lightweight artificial earth of the present invention
도2는 슬러지 하소분과 슬러지로 제조한 제올라이트의 XRD 패턴을 나타낸 도면2 is a diagram showing an XRD pattern of a sludge calcined powder and a zeolite prepared from sludge
도3은 1,000℃ 소성 온도에서 열처리된 제올라이트의 XRD 패턴을 나타낸 도면3 is a diagram showing an XRD pattern of zeolite heat treated at 1,000 ° C. firing temperature.
도4는 본 발명의 고기능 경량 인공토의 주사전자현미경 사진4 is a scanning electron microscope photograph of a high-performance lightweight artificial earth of the present invention
본 발명은 슬러지를 이용한 고기능 경량 인공토 및 그 제조방법에 관한 것으로, 좀더 상세하게는, 슬러지를 소정의 과정을 거쳐 생산한 제올라이트와 산화철, 황산나트륨, 탄산칼슘, 점토 및 슬러지 케익을 교반 혼합한 다음 고온에서 단시간 소성, 발포하여 제조하는 것이다.The present invention relates to a high-performance lightweight artificial earth using sludge and a method for manufacturing the same, and more specifically, after mixing the zeolite produced through the sludge with a predetermined process, iron oxide, sodium sulfate, calcium carbonate, clay and sludge cake It is produced by baking and foaming for a short time at high temperature.
상기 본 발명은 폐기물로 버려진 슬러지(하수, 정수 등)를 활용한 경량 인공토양으로서, 슬러지로부터 제조된 제올라이트를 경량 인공토 내에 함침시켜 양이온 교환능 및 흡수능을 크게 향상시켜 부가가치가 높은 상품으로 개발함으로써, 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 sludge (sewage, water purification, etc.) discarded as waste, by impregnating the zeolite prepared from the sludge into a lightweight artificial soil to greatly improve the cation exchange capacity and absorption capacity, by developing into a high value-added product, In addition to the import substitution effect of roofing greening lightweight materials such as pearlite, which rely on the total amount of imports, it is possible to drastically solve the problems of landfilling, ocean dumping, landfill shortage, and environmental pollution caused by international agreements and efficient recycling of resources using waste. This is possible.
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.
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, 제조된 제올라이트의 경우 구조적으로 취약하고 과립화 시키더라도 강도가 약하여 경량 인공토 소재로서 직접 사용되기 힘든 상태이며, 일부 농업용 인공 토양으로 제조하는 기술도 공개되어 있으나, 비중이 1 내외로 비교적 경량이 아니며, 다공성 정도 및 강도가 부족하여 녹화용 경량 소재로서는 불충분하다.In addition, the manufactured zeolite is structurally fragile and has a low strength even when granulated, and thus is difficult to be used directly as a lightweight artificial soil material. The lack of porosity and strength is insufficient as a lightweight material for greening.
그리고, 상기 슬러지로 제조된 제올라이트를 소성 발포과정에서 내부에 물리화학적으로 결합, 함침시켜 제조된 경량 인공토는 전무한 실정이다.In addition, there is no light artificial earth manufactured by combining and impregnating the zeolite manufactured by the sludge with physical and chemical impregnation therein in the plastic foaming process.
따라서, 본 발명에서는 상기 종래의 기술을 감안하여 이루어진 것으로, 슬러지로부터 제조된 제올라이트를 경량 인공토 내에 함침시켜 양이온 교환능 및 흡수능을 크게 향상시켜 부가가치가 높은 상품으로 개발함으로써, 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 슬러지를 이용한 고기능 경량 인공토 및 그 제조방법을 제공하고자 한다.Therefore, the present invention has been made in view of the above-described conventional technology, and impregnated a zeolite prepared from sludge into a light artificial earth to greatly improve the cation exchange capacity and absorption capacity, thereby developing a product having a high value-added pearlite, etc. A new type of sludge that can drastically solve the problems of landfilling, ocean dumping, landfill shortages, environmental pollution, etc. due to international agreements, and import substitution of lightweight materials for roofing To provide a high-performance lightweight artificial earth and a manufacturing method using the same.
이하, 본 발명의 구성에 대해 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated.
본 발명은 폐기물로 버려진 슬러지를 소정의 과정을 거쳐 제올라이트를 생산하는 제올라이트 수열합성공정과, 상기 공정에서 얻어진 제올라이트와 산화철, 황산나트륨, 탄산칼슘, 점토 및 슬러지 케익을 교반 혼합한 다음 건조한 상태에서 단시간 소성, 발포하여 제조하는 경량 인공토 제조공정으로 구성된다.The present invention is a zeolite hydrothermal synthesis process for producing zeolite through a predetermined process of the sludge discarded as a waste, and the zeolite obtained in the process and mixed with iron oxide, sodium sulfate, calcium carbonate, clay and sludge cake, and then calcined in a dry state for a short time It consists of a lightweight artificial soil manufacturing process produced by foaming.
1. 제올라이트 수열합성공정1. Zeolite hydrothermal synthesis process
슬러지를 650℃에서 3-6시간 하소(air calcination)하여 수분과 유기물을 일정량 제거하는 동시에, 흡열탈수반응에 의한 무정형 메타카올린을 생성한다.Air calcination of the sludge at 650 ° C. for 3-6 hours removes a certain amount of water and organics, and produces amorphous metakaolin by endothermic dehydration.
이를 1-3N 농도의 수산화나트륨 용액과 반응시키되, 메타카올린 : 수산화나 트륨 용액 = 1Kg : 5L의 비율로 약 100℃에서 6-24시간 반응시켜 제올라이트를 제조한다.This is reacted with a sodium hydroxide solution of 1-3N concentration, but the reaction was prepared for about 6-24 hours at about 100 ℃ in the ratio of metakaolin: sodium hydroxide solution = 1Kg: 5L to prepare a zeolite.
2. 경량 인공토 제조공정2. Lightweight artificial soil manufacturing process
상기 제올라이트 수열합성공정에서 얻어진, 슬러지로 제조한 제올라이트 5-30중량%, 산화철 0.5-5중량%, 황산나트륨 0.4-5중량%, 탄산칼슘 1-10중량%, 점토 20-50중량% 및 슬러지 케익 40-60중량%를 교반 혼합한 다음 건조한 상태에서 900-1,200℃에서 5-20분간 단시간 소성, 발포하여 제조한다.5-30% by weight of zeolite prepared from sludge, 0.5-5% by weight of iron oxide, 0.4-5% by weight of sodium sulfate, 1-10% by weight of calcium carbonate, 20-50% by weight of clay and sludge cake obtained in the zeolite hydrothermal synthesis process 40-60 wt% of the mixture is stirred and mixed, and then calcined and foamed for 5-20 minutes at 900-1,200 ° C. in a dry state.
상기와 같이 본 발명의 슬러지를 이용한 고기능 경량 인공토 및 그 제조방법에 있어서는, 슬러지를 600℃ 이상 하소한 것을 알칼리 조성의 물질과 80~120℃ 온도에서 3~12시간 반응시켜 제올라이트를 제조하는 공정과, 이 제올라이트를 5~30%, 산화철 0.5~5%, 황산나트륨 0.4~5%, 탄산칼슘 1~10%, 점토 20~50%, 슬러지케익 40~60%를 혼합·성형한 후 900~1200℃에서 소성, 발포하여 고기능 경량 인공토를 제조하는 공정으로 이루어진다.As described above, in the high-performance lightweight artificial earth using the sludge of the present invention and a method for producing the same, the step of producing a zeolite by reacting the calcined sludge with 600 ℃ or more at a temperature of 80 ~ 120 ℃ 3 to 12 hours 5-30% of this zeolite, 0.5-5% of iron oxide, sodium sulfate It consists of 0.4 ~ 5%,
즉, 본 발명은 슬러지로부터 제조된 제올라이트를 경량 인공토내에 함침시켜 양이온 교환능(Cation exchange capacity) 및 흡수능을 크게 향상시킨 것을 특징으로 하며, 폐기물로 버려지는 슬러지(하수, 정수 등)를 부가가치가 높은 녹화용 경량 인공토로 재활용하는데 효과적인 방법이라 할 수 있다.That is, the present invention is characterized in that the zeolite prepared from the sludge is impregnated in a lightweight artificial soil to greatly improve the cation exchange capacity and the absorption capacity, and the added value of the sludge (sewage, water purification, etc.) to be disposed of as waste is high. It is an effective way to recycle it as a lightweight artificial earth for greening.
도1는 상기한 바의 본 발명의 경량 인공토의 제조 과정 설명도를 나타내고 있다.Figure 1 shows an explanatory view of the manufacturing process of the lightweight artificial earth 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
ⅰ) 제올라이트 수열합성Zeolite hydrothermal synthesis
슬러지 500Kg을 650℃에서 5시간 하소하여 수분과 유기물을 일정량 제거하는 동시에, 흡열탈수반응에 의하여 무정형 메타카올린을 얻었다. 이를 1~3 N 농도의 수산화나트륨용액과 반응시키되 메타카올린 : 수산화나트륨용액 = 1kg : 5L 의 비율로 약 100℃에서 20시간 반응시켜 제올라이트 50Kg을 제조하였다.500Kg of sludge was calcined at 650 ° C for 5 hours to remove a certain amount of water and organics, and to obtain amorphous metakaolin by endothermic dehydration reaction. This was reacted with sodium hydroxide solution at a concentration of 1 to 3 N, but reacted at about 100 ° C. for 20 hours at a ratio of metakaolin: sodium hydroxide solution = 1 kg: 5L to prepare 50 Kg of zeolite.
도2는 슬러지 하소분과 상기 슬러지로 제조한 제올라이트의 XRD 패턴을 나타낸 도면으로서, X선 회절분석결과 인공 제올라이트가 잘 형성되었음을 알 수 있다(도2a →도2b).Figure 2 is a diagram showing the sludge calcined powder and the XRD pattern of the zeolite prepared from the sludge, it can be seen that the artificial zeolite was well formed by the X-ray diffraction analysis (Fig. 2a → Fig. 2b).
또한, 도3은 1,000℃ 소성 온도에서 열처리된 제올라이트의 XRD 패턴을 나타낸 도면으로서, 고온의 소성 온도에서도 제올라이트 기능이 남아 있음을 보여주고 있다.In addition, Figure 3 is a view showing the XRD pattern of the zeolite heat-treated at 1000 ℃ firing temperature, showing that the zeolite function remains even at a high temperature firing temperature.
ⅱ) 경량 인공토 제조Ii) manufacture of lightweight artificial earth
상기 ⅰ)의 공정에서 얻어진 제올라이트 15중량%, 산화철 2중량%, 황산나트륨 2중량%, 탄산칼슘 4중량%, 점토 32중량% 및 슬러지 케익 45중량%를 혼합기에 넣고 교반 혼합하였다.15% by weight of zeolite, 2% by weight of iron oxide, 2% by weight of sodium sulfate, 4% by weight of calcium carbonate, 32% by weight of clay and 45% by weight of sludge cake were added to a mixer and stirred.
적당하게 표면이 건조된 상태에서, 1000℃의 온도에서 10분간 단시간 소성, 발포하여 본 발명의 경량 인공토를 제조하였다.In a state where the surface is properly dried, a short time firing and foaming for 10 minutes at a temperature of 1000 ℃ to prepare a lightweight artificial earth of the present invention.
도4는 본 발명의 고기능 경량 인공토의 주사전자현미경 사진으로서, 도4a는 슬러지로 제조한 인공제올라이트 상태, 도4b는 고온 발포한 소성체, 그리고 도4c는 제올라이트 첨가후 제조한 본 발명의 인공토양 소성체를 나타내 보이고 있다.Figure 4 is a scanning electron micrograph of the high-performance lightweight artificial earth of the present invention, Figure 4a is a state of artificial zeolite made of sludge, Figure 4b is a high-temperature foamed plastic body, and Figure 4c is the artificial soil of the present invention prepared after the addition of zeolite The fired body is shown.
상기 실시예에서 얻어진 본 발명의 고기능 경량 인공토의 물리적 성능을 하기 표1에 나타낸다.Table 1 shows the physical performance of the high-performance lightweight artificial earth of the present invention obtained in the above Examples.
이와 같이 제조된 본 발명의 슬러지를 이용한 고기능 경량 인공토는 다음과 같은 특징이 있다.High-performance lightweight artificial earth using the sludge of the present invention prepared as described above has the following characteristics.
1. 폐기물인 슬러지로 제올라이트를 제조하고, 그 제올라이트를 소성, 발포과정에서 내부에 물리화학적으로 결합, 함침시켜 고기능 경량 인공토를 제조한다.1. Prepare zeolite from waste sludge, and manufacture high performance lightweight artificial earth by combining and impregnating the zeolite with physicochemical inside.
2. 소성, 발포과정으로 제조되는 본 발명의 경량 인공토는 자체에 기공이 상당히 많은 구조(밀도 0.3~0.5)를 가지고 있어, 물리적 강도, 흡수능, 경량도가 우수하며, 동시에 내부에 제올라이트의 기능이 부가되어 양이온 치환능이 향상된 우수한 경량 인공토로 사용될 수 있다.2. The lightweight artificial earth of the present invention manufactured by the firing and foaming process has a structure (density 0.3 ~ 0.5) with many pores in itself, and has excellent physical strength, absorption capacity, and light weight, and at the same time, functions of zeolite inside This addition can be used as a good lightweight artificial earth 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·하수처리장에서 배출되는 슬러지를 1/5~1/10 정도로 크게 감량화가 가능하다.4. The sludge discharged from the water and sewage treatment plant can be greatly reduced to about 1/5 ~ 1/10.
5. 고온 열처리 단계에서 중금속 등이 고용체화 되어 환경적으로 상당히 안정해 진다.5. In the high temperature heat treatment step, heavy metals are solidified and become 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 입도조절이 용이하여, 용도에 따른 다양한 인공토양을 제조할 수 있는 기술이다.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 simple grinding process, and it is a technology that can manufacture various artificial soils according to usage.
이상 설명한 바와 같이, 본 발명에 따르면 슬러지를 소정의 과정을 거쳐 제조한 제올라이트를 경량 인공토 내에 함침시켜 양이온 교환능 및 흡수능을 크게 향상시켜 부가가치가 높은 상품으로 개발함으로써, 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 zeolite produced through a predetermined process is impregnated in a lightweight artificial earth to greatly improve cation exchange capacity and absorption capacity, thereby developing a high value-added product, such as pearlite, which relies on imports. In addition to the import substitution effect of rooftop light weight materials, it is possible to drastically solve the problems of landfilling, ocean dumping, landfill shortage, and environmental pollution by international agreement, and it is possible to efficiently recycle resources using waste. Use and application are expected.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR910001304B1 (en) * | 1982-02-04 | 1991-03-02 | 헨켈 코만디트 게젤샤프트 아우프 악틴 | Process for continuous conversion of meta-kaolin into very finely-divided zeolitic sodium aluminosilicate |
| JPH06239612A (en) * | 1992-12-21 | 1994-08-30 | Mitsubishi Heavy Ind Ltd | Production of zeolite-based mineral from sewage sludge-incinerated ash |
| JPH07113075A (en) * | 1993-10-18 | 1995-05-02 | Nippon Telegr & Teleph Corp <Ntt> | Soil conditioner and production thereof |
| KR19990014544A (en) * | 1998-11-21 | 1999-02-25 | 최성찬 | Manufacturing method of building materials using sludge from fluoric acid wastewater |
| KR20030070204A (en) * | 2002-02-21 | 2003-08-29 | 경기대학교 | Composition for light weight artificial aggregate made from waste material and method for manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR910001304B1 (en) * | 1982-02-04 | 1991-03-02 | 헨켈 코만디트 게젤샤프트 아우프 악틴 | Process for continuous conversion of meta-kaolin into very finely-divided zeolitic sodium aluminosilicate |
| JPH06239612A (en) * | 1992-12-21 | 1994-08-30 | Mitsubishi Heavy Ind Ltd | Production of zeolite-based mineral from sewage sludge-incinerated ash |
| JPH07113075A (en) * | 1993-10-18 | 1995-05-02 | Nippon Telegr & Teleph Corp <Ntt> | Soil conditioner and production thereof |
| KR19990014544A (en) * | 1998-11-21 | 1999-02-25 | 최성찬 | Manufacturing method of building materials using sludge from fluoric acid wastewater |
| KR20030070204A (en) * | 2002-02-21 | 2003-08-29 | 경기대학교 | Composition for light weight artificial aggregate made from waste material and method for manufacturing the same |
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