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WO2012134110A2 - Method for solidifying waste containing water, solidified material prepared thereby, industrial material using same and solid fuel - Google Patents

Method for solidifying waste containing water, solidified material prepared thereby, industrial material using same and solid fuel Download PDF

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Publication number
WO2012134110A2
WO2012134110A2 PCT/KR2012/002107 KR2012002107W WO2012134110A2 WO 2012134110 A2 WO2012134110 A2 WO 2012134110A2 KR 2012002107 W KR2012002107 W KR 2012002107W WO 2012134110 A2 WO2012134110 A2 WO 2012134110A2
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WO
WIPO (PCT)
Prior art keywords
water
waste
hydrous
containing waste
containing water
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Ceased
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PCT/KR2012/002107
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French (fr)
Korean (ko)
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WO2012134110A3 (en
Inventor
이진희
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APW Inc
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APW Inc
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Publication of WO2012134110A3 publication Critical patent/WO2012134110A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • B09B3/21—Agglomeration, binding or encapsulation of solid waste using organic binders or matrix
    • B09B3/24—Binders with plastic
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/008—Sludge treatment by fixation or solidification
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/40—Solid fuels essentially based on materials of non-mineral origin
    • C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
    • 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
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/20—Sludge processing
    • 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
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing

Definitions

  • the present invention relates to the treatment of hydrous wastes, and more particularly, to a solidification method of hydrous wastes, solid materials produced thereby, industrial materials and solid fuels using the same.
  • sewage sludge treatment methods commonly used in many countries include incineration of sewage sludge, incineration of the remainder, and dehydration of the remaining dehydrated cakes. After removing the dehydrated material, the sludge in dehydrated state is dumped at sea.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a dehydration process using an absorbent such as an airgel and a polymer made of PX300 (Soil Stabilizer) for water-containing waste such as sewage sludge. It is to provide a solidification method of the water-containing waste to solidify it through the application of the mixing process, the solid material produced thereby, industrial materials such as construction materials using the same, and solid fuel.
  • an absorbent such as an airgel and a polymer made of PX300 (Soil Stabilizer) for water-containing waste such as sewage sludge.
  • PX300 Soil Stabilizer
  • a solidifying method of water-containing waste comprising a solidifying step of solidifying the water-containing waste by mixing a polymer with water-containing waste.
  • the polymer agent is G.M. PX300, a soil hardener from Boston Company Intl.
  • the solidifying method of the water-containing waste may further include a water-containing waste dewatering step of dewatering the water-containing waste before the water-containing waste solidifying step.
  • the hydrous waste may be dehydrated using a moisture absorbent.
  • the moisture absorbent may be an airgel.
  • the airgel may be more preferably an organic airgel when the solid fuel is provided.
  • the solidification method of the water-containing waste may further include a heavy metal reduction treatment step of reducing the heavy metal component of the water-containing waste before the water-containing waste solidification step.
  • the solidification method of the water-containing waste further comprises providing a water-containing waste to provide the water-containing waste to be solidified, the water-containing waste provided through the water-containing waste providing the sewage or food sludge, and its dewatering cake, underground reservoir sludge and dredged soil It may be any one of.
  • a solid material produced by the solidification method of the water-containing waste an industrial material containing the solid material, and a solid fuel.
  • the present invention it is easy to dehydrate water waste such as sewage sludge using a hygroscopic agent such as aerogel and solidify such water waste by using a polymer such as PX300 (soil reinforcing agent). It can be applied to various uses such as industrial materials and solid fuels such as construction materials. As a result, it is not only possible to solve the problems such as the difficulty of reducing the water cost and the high cost for dehydration and environmental pollution, which have been generated in the conventional process of treating wastewater such as sewage sludge, but also through solidification of dehydrated wastewater. The high cost of treatment and environmental pollution can be solved.
  • the solid material produced thereby, industrial materials and solid fuel using the same (1) water content reduction, which is the most difficult problem in the treatment of water-containing waste such as sewage sludge in the global countries
  • Environmentally friendly wastewater can be solidified by applying eco-friendly and high-efficiency methods for (dehydration) (CO 2 generation, etc.), and (2) significant cost reduction compared to conventional sludge treatment methods.
  • CO 2 generation eco-friendly and high-efficiency methods for (dehydration)
  • CO 2 generation eco-friendly and high-efficiency methods for (dehydration)
  • significant cost reduction compared to conventional sludge treatment methods.
  • the use of fossil fuels is avoided, resulting in various advantages such as CO 2 reduction. This can provide effects such as contributing to the environment and the economy.
  • FIG. 1 is a flowchart illustrating a solidification method of the wastewater according to an embodiment of the present invention.
  • Embodiments in accordance with the concepts of the present invention can be variously modified and have a variety of forms specific embodiments will be described in detail in the present specification or application. However, this is not intended to limit the embodiments in accordance with the concept of the present invention to a specific disclosed form, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.
  • first and / or second may be used to describe various components, but the components are not limited to the terms. The terms are only for the purpose of distinguishing one component from other components, for example, without departing from the scope of the rights according to the inventive concept, the first component may be called a second component, and For example, the second component may also be referred to as a first component.
  • the present invention relates to a method for solidifying a water-containing waste, a solid material produced thereby, an industrial material using the same, and a solid fuel obtained through processing thereof, and more particularly, a water content reduction using an absorbent such as aerogel, which is a new superporous nanostructure material.
  • the solidifying method of the water-containing waste according to an embodiment of the present invention, the water-containing waste providing step (S10), heavy metal reduction processing step (S20), water-containing waste dehydration step (S30), solidification step (S40).
  • the hydrous wastes to be solidified include all types of sludge (including sewage and food sludge dewatering cakes, as well as sewage sludge and underground reservoir sludge having a higher water content in the previous stage) or dredged soil such as rivers and seas. It may include all kinds of onitos having a moisture content above a certain level.
  • the heavy metal component of the water-containing waste provided through the water-containing waste providing step (S10) is reduced. That is, in the case of hydrous waste such as sludge with high heavy metal pollution, it may be difficult to directly recycle solid materials generated through simple solidification to building materials.In this case, the use of chelate and The heavy metal content can be reduced by using the same conventional heavy metal removal method. Heavy metal reduction processing step (S20) may be omitted in some cases.
  • the hydrous waste having passed the heavy metal reduction treatment step (S20) is dehydrated by the absorbent.
  • the moisture absorbent used in the dehydration step is preferably an airgel (Aerogel: super porous nanostructure new material).
  • Water waste dewatering step (S20) may be omitted in some cases.
  • the airgel may be applicable to all conventional hydrophilic airgel products.
  • An airgel is a material made of silicon oxide, a structure in which the SiO 2 yarn, which is one thousandth the thickness of the hair, is extremely intertwined, and air molecules are contained between the yarn and the air occupies 98% of the volume.
  • Hydrophilic airgel has the ability to absorb more than 100 times its own weight. Such a water absorption function is excellent in reducing the water content (dehydration) of water waste. Therefore, this aerogel can serve as an excellent solution to water content reduction (dehydration), which is the most difficult point in solidifying water waste.
  • any type of hydrous waste including 'dehydrated cake-onitto', a sewage sludge treatment material, can be solidified through dehydration.
  • the hydrous waste dehydrated through the hydrous waste dehydration step (S30) is mixed with a polymer such as a soil reinforcing agent to solidify the hydrous waste.
  • a polymer such as a soil reinforcing agent
  • the polymer agent applied to the embodiment of the present invention is PX300 used for use as a soil reinforcing agent.
  • PX300 is G.M. It is a patented technology of Boston Company Intl., LLC (www.gmbostoncompany.com). It is a Soil Stabilizer product based on polymers and enzyme emulsions. It does not require any stirring additives for any kind of soil.
  • PX300 chemical is mixed with water to strengthen the on-site soil.
  • the PX300 combines only water to strengthen all types of soil (masato, loess, volcanic ash, sand, mud). Accordingly, since the main components of the dehydrated cake also have soil components such as SiO 2 and Al 2 O 3 , and contain 70 to 85% of moisture, the dehydrated cake itself may be formed using the above-mentioned aerogels (new super-porous nanostructure material).
  • the treated material of sewage sludge 'dehydrated cake-onito' may be solidified at a low cost and in a very efficient and easy way.
  • PX300 uses only mixed and agitated water to reinforce various types of soil. Therefore, when PX300 is treated, it can effectively and economically strengthen (solidify) it by utilizing moisture contained in 'dehydrated cake' itself. Will be.
  • the PX300 has been proven in experimental data such as temperature resistance up to 212 degrees Fahrenheit (about 100 degrees Celsius) in summer, and pressure resistance that can be sufficiently applied to road applications.
  • the present invention can provide an industrial material using a solid material produced by the solidification method of the above-mentioned water-containing waste.
  • a construction material containing such a solid material it is possible to provide a construction material containing such a solid material, thereby manufacturing economic and more environmentally friendly industrial materials. To do that.
  • the present invention can provide a solid fuel produced using a solid material formed by the solidification method of the above-mentioned water-containing waste.
  • the solid fuel using the solid material using the solidification method of the water-containing waste of the present invention is used by various entities such as industrial facilities such as power plants and cement kilns using large amounts of energy such as coal-fired power plants, facility farms and consumers of general energy. By making it possible, it can provide the benefits of contributing to the environment and economy, such as by reducing CO 2 .
  • a more preferable solid fuel may be manufactured.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Soil Sciences (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The present invention relates to the treatment of waste containing water, and more specifically, to a method for solidifying waste containing water, a solidified material prepared thereby, an industrial material using the same, and a solid fuel. According to the present invention, provided is a method for solidifying waste containing water, comprising a solidification step of mixing waste containing water with a polymer material to solidify the waste containing water. The polymer material may be PX300 which is a soil stabilizer of G.M. Boston Company Intl. The method for solidifying waste containing water can further comprise a dehydration step of dehydrating waste containing water before the solidification step.

Description

함수 폐기물의 고형화 방법, 이에 의해 제조된 고형재, 이를 이용한 산업재 및 고형연료Solidification method of water-containing waste, solid material produced thereby, industrial material and solid fuel using same

본 발명은 함수(含水) 폐기물의 처리에 관한 것으로서, 특히 함수 폐기물의 고형화 방법, 이에 의해 제조된 고형재, 이를 이용한 산업재 및 고형연료에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the treatment of hydrous wastes, and more particularly, to a solidification method of hydrous wastes, solid materials produced thereby, industrial materials and solid fuels using the same.

근래 들어 지구적 차원의 환경오염 문제가 크게 대두되면서, 하수 슬러지 등의 함수 폐기물 처리 문제 역시 관심의 대상이 되고 있다. 하수 슬러지를 처리하기 위한 방법으로 현재는 소각, 용융, 열분해, 고화(固化), 매립 및 해양투기 등의 방식이 이용되고 있다. In recent years, as the problem of environmental pollution at the global level has emerged, the problem of treating wastewater such as sewage sludge has also attracted attention. As a method for treating sewage sludge, incineration, melting, pyrolysis, solidification, landfilling and ocean dumping are currently used.

종래에 여러 나라에서 일반적으로 사용되는 하수 슬러지 처리 방식은, 하수 슬러지 중 탈 수 있는 물질을 가려 소각하고, 나머지에 대해 탈수 과정을 거친 다음, 탈수가 완료된 ‘탈수케이크'(수거한 슬러지 가운데 불에 탈 수 있는 물질을 제거한 후 이를 탈수한 상태의 슬러지) 상태의 슬러지를 해양 투기하는 것이다.Conventionally, sewage sludge treatment methods commonly used in many countries include incineration of sewage sludge, incineration of the remainder, and dehydration of the remaining dehydrated cakes. After removing the dehydrated material, the sludge in dehydrated state is dumped at sea.

우리나라의 경우에도, 현재 지자체가 슬러지를 수거한 다음 ‘탈수케이크’를 하수 슬러지 소각로로 보내 소각 처리한 후 나머지에 대해 해양투기 등의 방식을 통해 처리하고 있는데, 전국에 약 400여기의 소각로가 운영되고 있으며 이를 통해 보통 하루 2,500톤 이상의 하수 슬러지를 처리하고 있는 실정이다. In Korea, local governments collect sludge and send 'dewatered cakes' to sewage sludge incinerators for incineration and the rest are processed by ocean dumping. About 400 incinerators are operated nationwide. Through this process, more than 2,500 tons of sewage sludge are treated per day.

그런데 이와 같은 소각 방식의 경우, 소각로 건설이나 이의 운영에 막대한 자금이 소요될 뿐만 아니라, 이산화탄소 및 다이옥신 등의 발생으로 인한 주변 환경의 오염 가능성이 존재한다는 등의 문제점이 있다. By the way, such an incineration method, a huge amount of money is required for the construction or operation of the incinerator, there is a problem that there is a possibility of pollution of the surrounding environment due to the generation of carbon dioxide and dioxin.

아울러, 2012년부터 시행되는 런던협약에 의해 하수 슬러지의 해양투기가 전면 금지됨에 따라 이의 대체를 위한 새로운 방안 마련이 절실히 요구되고 있다. In addition, since the London Convention, which has been in force since 2012, has banned all dumping of sewage sludge, there is an urgent need for new measures to replace it.

본 발명은 전술한 바와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은, 하수 슬러지 등의 함수 폐기물에 대해 에어로젤 등의 흡습제를 이용한 탈수 과정 및 PX300(토양 강화제-Soil Stabilizer) 등의 폴리머제의 혼합 과정의 적용을 통해 이를 고형화 시키는 함수 폐기물의 고형화 방법과 이에 의해 제조된 고형재, 이를 이용한 건설자재 등의 산업재, 및 고형연료를 제공하는 것이다.The present invention has been made to solve the above problems, and an object of the present invention is to provide a dehydration process using an absorbent such as an airgel and a polymer made of PX300 (Soil Stabilizer) for water-containing waste such as sewage sludge. It is to provide a solidification method of the water-containing waste to solidify it through the application of the mixing process, the solid material produced thereby, industrial materials such as construction materials using the same, and solid fuel.

상기한 목적을 달성하기 위하여, 본 발명의 일측면에 따르면,In order to achieve the above object, according to an aspect of the present invention,

함수 폐기물에 폴리머제를 혼합하여 상기 함수 폐기물을 고형화시키는 고형화 단계를 포함하는 것을 특징으로 하는 함수 폐기물의 고형화 방법이 제공된다.There is provided a solidifying method of water-containing waste, comprising a solidifying step of solidifying the water-containing waste by mixing a polymer with water-containing waste.

상기 폴리머제는 G.M. Boston Company Intl.사의 토양강화제인 PX300일 수 있다.The polymer agent is G.M. PX300, a soil hardener from Boston Company Intl.

상기 함수 폐기물의 고형화 방법은 상기 함수 폐기물 고형화 단계 전의 함수 폐기물을 탈수시키는 함수 폐기물 탈수 단계를 더 포함할 수 있다.The solidifying method of the water-containing waste may further include a water-containing waste dewatering step of dewatering the water-containing waste before the water-containing waste solidifying step.

상기 함수 폐기물 탈수 단계에서는 상기 함수 폐기물을 흡습제를 이용하여 탈수시킬 수 있다.In the hydrous waste dewatering step, the hydrous waste may be dehydrated using a moisture absorbent.

상기 흡습제는 에어로젤일 수 있다.The moisture absorbent may be an airgel.

상기 에어로젤은 고형연료의 제공시에는 유기질 에어로젤이 더욱 바람직할 수 있다.The airgel may be more preferably an organic airgel when the solid fuel is provided.

상기 함수 폐기물의 고형화 방법은 상기 함수 폐기물 고형화 단계 전의 함수 폐기물의 중금속 성분을 저감시키는 중금속 저감 처리 단계를 더 포함할 수 있다.The solidification method of the water-containing waste may further include a heavy metal reduction treatment step of reducing the heavy metal component of the water-containing waste before the water-containing waste solidification step.

상기 함수 폐기물의 고형화 방법은 고형화 대상인 함수 폐기물을 제공하는 함수 폐기물 제공 단계를 더 포함하며, 상기 함수 폐기물 제공 단계를 통해 제공되는 함수 폐기물은 하수 또는 음식 슬러지, 및 이의 탈수 케이크, 지하 저수조 슬러지 및 준설토 중 어느 하나일 수 있다.The solidification method of the water-containing waste further comprises providing a water-containing waste to provide the water-containing waste to be solidified, the water-containing waste provided through the water-containing waste providing the sewage or food sludge, and its dewatering cake, underground reservoir sludge and dredged soil It may be any one of.

상기한 목적을 달성하기 위하여 본 발명의 다른 측면에 따르면,According to another aspect of the present invention to achieve the above object,

상기 함수 폐기물의 고형화 방법에 의해 제조된 고형재, 이 고형재를 포함하는 산업재 및 고형 연료가 제공된다.Provided are a solid material produced by the solidification method of the water-containing waste, an industrial material containing the solid material, and a solid fuel.

본 발명에 의하면, 에어로젤 등의 흡습제를 이용하여 하수슬러지 등과 같은 함수폐기물의 탈수를 용이하게 하고, PX300(토양 강화제) 등의 폴리머제를 이용하여 이러한 함수 폐기물을 고형화시킴으로써, 이에 의해 형성된 고형재를 활용하여 건설자재 등의 산업재 및 고형연료 등의 다양한 용도로 응용할 수 있게 되었다. 이에 따라, 종래 하수 슬러지 등의 함수 폐기물 처리 과정에서 발생되던 함수비 저감의 어려움 및 탈수를 위한 높은 비용과 환경오염 등의 문제를 해결할 수 있게 되었을 뿐만 아니라, 궁극적으로 탈수된 함수폐기물의 고형화를 통하여 이의 처리에 소요되던 높은 비용과 환경오염 등의 문제를 해결할 수 있게 되었다는 등의 효과를 얻을 수 있다.According to the present invention, it is easy to dehydrate water waste such as sewage sludge using a hygroscopic agent such as aerogel and solidify such water waste by using a polymer such as PX300 (soil reinforcing agent). It can be applied to various uses such as industrial materials and solid fuels such as construction materials. As a result, it is not only possible to solve the problems such as the difficulty of reducing the water cost and the high cost for dehydration and environmental pollution, which have been generated in the conventional process of treating wastewater such as sewage sludge, but also through solidification of dehydrated wastewater. The high cost of treatment and environmental pollution can be solved.

다시 말해, 본 발명의 함수 폐기물의 고형화 방법, 이에 의해 제조된 고형재, 이를 이용한 산업재 및 고형연료에 따르면, (1) 전 지구적인 각국의 하수 슬러지 등의 함수 폐기물 처리 문제에 가장 난점인 함수비 저감(탈수처리)에 대한 친환경, 고효율적 방법의 적용을 통한 함수폐기물의 고형화를 가능하도록 하여 환경보호에 일조할 수 있으며(CO2 발생 등 저감), (2) 통상의 슬러지 처리 방법 대비 막대한 비용 절감과 인체 및 환경 유해성을 방지할 수 있을 뿐만 아니라, (3) 고형화 제품의 각종 산업재 및 고형연료로의 응용을 통해 화석연료 사용을 피하게 되므로 CO2 저감 등의 다양한 장점을 얻을 수 있게 되어, 결과적으로 환경 및 경제에 일조할 수 있도록 한다는 등의 효과를 제공할 수 있게 된다.In other words, according to the solidification method of the water-containing waste of the present invention, the solid material produced thereby, industrial materials and solid fuel using the same, (1) water content reduction, which is the most difficult problem in the treatment of water-containing waste such as sewage sludge in the global countries Environmentally friendly wastewater can be solidified by applying eco-friendly and high-efficiency methods for (dehydration) (CO 2 generation, etc.), and (2) significant cost reduction compared to conventional sludge treatment methods. In addition to preventing human and environmental hazards, and (3) the use of solidified products for various industrial materials and solid fuels, the use of fossil fuels is avoided, resulting in various advantages such as CO 2 reduction. This can provide effects such as contributing to the environment and the economy.

도 1은 본 발명의 일 실시예에 따른 함수 폐기물의 고형화 방법을 도시한 순서도이다.1 is a flowchart illustrating a solidification method of the wastewater according to an embodiment of the present invention.

이하의 특정한 구조 내지 기능적 설명들은 단지 본 발명의 개념에 따른 실시예를 설명하기 위한 목적으로 예시된 것으로, 본 발명의 개념에 따른 실시예들은 다양한 형태로 실시될 수 있으며 본 명세서 또는 출원에 설명된 실시예들에 한정되는 것으로 해석되어서는 아니된다.The following specific structural to functional descriptions are merely illustrated for the purpose of describing embodiments in accordance with the concepts of the present invention, and embodiments in accordance with the concepts of the present invention may be embodied in various forms and may not be described in the specification or the application. It should not be construed as limited to the embodiments.

본 발명의 개념에 따른 실시예는 다양한 변경을 가할 수 있고 여러 가지 형태를 가질 수 있으므로 특정 실시예들은 본 명세서 또는 출원에 상세하게 설명하고자 한다. 그러나, 이는 본 발명의 개념에 따른 실시예들을 특정한 개시 형태에 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.Embodiments in accordance with the concepts of the present invention can be variously modified and have a variety of forms specific embodiments will be described in detail in the present specification or application. However, this is not intended to limit the embodiments in accordance with the concept of the present invention to a specific disclosed form, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

제1 및/또는 제2 등의 용어는 다양한 구성 요소들을 설명하는데 사용될 수 있지만, 상기 구성 요소들은 상기 용어들에 한정되지는 않는다. 상기 용어들은 하나의 구성 요소를 다른 구성 요소들로부터 구별하는 목적으로만, 예컨대 본 발명의 개념에 따른 권리 범위로부터 이탈되지 않은 채, 제1 구성 요소는 제2 구성 요소로 명명될 수 있고, 유사하게 제2 구성 요소는 제1 구성 요소로도 명명될 수 있다. Terms such as first and / or second may be used to describe various components, but the components are not limited to the terms. The terms are only for the purpose of distinguishing one component from other components, for example, without departing from the scope of the rights according to the inventive concept, the first component may be called a second component, and For example, the second component may also be referred to as a first component.

어떠한 구성 요소가 다른 구성 요소에 "연결되어" 있다거나 "접속되어" 있다고 언급된 때에는, 그 다른 구성 요소에 직접적으로 연결되어 있거나 또는 접속되어 있을 수도 있지만, 중간에 다른 구성 요소가 존재할 수도 있다고 이해되어야 할 것이다. 반면에, 어떠한 구성 요소가 다른 구성 요소에 "직접 연결되어" 있다거나 또는 "직접 접속되어" 있다고 언급된 때에는, 중간에 다른 구성 요소가 존재하지 않는 것으로 이해되어야 할 것이다. 구성 요소들 간의 관계를 설명하기 위한 다른 표현들, 즉 "~사이에"와 "바로 ~사이에" 또는 "~에 인접하는"과 "~에 직접 인접하는" 등의 표현도 마찬가지로 해석되어야 한다.When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in the middle. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle. Other expressions for describing relationships between components, such as "between" and "immediately between" or "adjacent to" and "directly adjacent to", should be interpreted as well.

본 명세서에서 사용하는 용어는 단지 특정한 실시예를 설명하기 위해 사용된 것으로서, 본 발명을 한정하려는 의도가 아니다. 단수의 표현은 문맥상 명백하게 다르게 뜻하지 않는 한, 복수의 표현을 포함한다. 본 명세서에서 "포함하다" 또는 "가지다" 등의 용어는 설시된 특징, 숫자, 단계, 동작, 구성 요소, 부분품 또는 이들을 조합한 것이 존재함을 지정하려는 것이지, 하나 또는 그 이상의 다른 특징들이나 숫자, 단계, 동작, 구성 요소, 부분품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다.The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. The terms "comprise" or "have" herein are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof that is described, and that one or more other features or numbers, It should be understood that it does not exclude in advance the possibility of the presence or addition of steps, actions, components, parts or combinations thereof.

다르게 정의되지 않는 한, 기술적이거나 과학적인 용어를 포함해서 여기서 사용되는 모든 용어들은 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에 의해 일반적으로 이해되는 것과 동일한 의미를 가지고 있다. 일반적으로 사용되는 사전에 정의되어 있는 것과 같은 용어들은 관련 기술의 문맥상 가지는 의미와 일치하는 의미를 갖는 것으로 해석되어야 하며, 본 명세서에서 명백하게 정의하지 않는 한, 이상적이거나 과도하게 형식적인 의미로 해석되지 않는다. Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined herein. Do not.

본 발명은 함수 폐기물의 고형화 방법, 이에 의해 제조된 고형재, 이를 이용한 산업재 및 이의 가공을 통하여 얻어진 고형연료 등에 관한 것으로, 보다 상세하게는, 초다공성 나노구조 신소재인 에어로젤 등의 흡습제를 이용한 함수비 저감(탈수) 과정 및 토양 강화제(Soil Stabilizer) 등의 폴리머제를 이용한 고형화 과정을 통해 하수 슬러지 등의 함수폐기물을 고형화시키는 방법과, 이에 의해 제조된 고형재, 이를 이용한 건설자재 등의 산업재 및 고형연료에 관한 것이다. The present invention relates to a method for solidifying a water-containing waste, a solid material produced thereby, an industrial material using the same, and a solid fuel obtained through processing thereof, and more particularly, a water content reduction using an absorbent such as aerogel, which is a new superporous nanostructure material. The method of solidifying water-containing waste such as sewage sludge through the (dehydration) process and the solidification process using polymer such as Soil Stabilizer, and the solid materials manufactured by this, industrial materials such as construction materials and solid fuels using the same It is about.

도 1을 참조하면, 본 발명의 일 실시예에 따른 함수 폐기물의 고형화 방법은, 함수 폐기물 제공 단계(S10)와, 중금속 저감 처리 단계(S20)와, 함수 폐기물 탈수 단계(S30)와, 고형화 단계(S40)를 포함한다. 1, the solidifying method of the water-containing waste according to an embodiment of the present invention, the water-containing waste providing step (S10), heavy metal reduction processing step (S20), water-containing waste dehydration step (S30), solidification step (S40).

함수 폐기물 제공 단계(S10)에서는 본 발명에 따른 고형화 대상인 함수 폐기물이 제공된다. 여기서, 고형화 대상인 함수 폐기물은, 모든 종류의 슬러지(하수 및 음식 슬러지 탈수케이크뿐만 아니라, 그 이전 단계의 함수율이 더 높은 하수 슬러지 및 지하 저수조 슬러지 등을 포함)나 또는 하천 및 바다 등의 준설토 등과 같은, 일정 수준 이상의 함수율을 갖는 다양한 종류의 오니토(汚泥土)를 모두 포함할 수 있다. In the water waste providing step (S10), water waste which is the object of solidification according to the present invention is provided. Here, the hydrous wastes to be solidified include all types of sludge (including sewage and food sludge dewatering cakes, as well as sewage sludge and underground reservoir sludge having a higher water content in the previous stage) or dredged soil such as rivers and seas. It may include all kinds of onitos having a moisture content above a certain level.

중금속 저감 처리 단계(S20)에서는 함수 폐기물 제공 단계(S10)를 통해 제공된 함수 폐기물의 중금속 성분이 저감된다. 즉, 중금속 오염도가 높은 슬러지 등의 함수 폐기물의 경우 단순 고형화를 통해 생성된 고형재를 직접적으로 건축 자재 등으로 재활용하기에는 문제가 발생될 수 있는 바, 이러한 경우에 한해 킬레이트(chelate)의 사용 방식과 같은 통상의 중금속 제거 방식을 이용하여 중금속 함유율을 저감시킬 수 있다. 중금속 저감 처리 단계(S20)는 경우에 따라서 생략될 수도 있다.In the heavy metal reduction treatment step (S20), the heavy metal component of the water-containing waste provided through the water-containing waste providing step (S10) is reduced. That is, in the case of hydrous waste such as sludge with high heavy metal pollution, it may be difficult to directly recycle solid materials generated through simple solidification to building materials.In this case, the use of chelate and The heavy metal content can be reduced by using the same conventional heavy metal removal method. Heavy metal reduction processing step (S20) may be omitted in some cases.

함수 폐기물 탈수 단계(S30)에서는 중금속 저감 처리 단계(S20)를 거친 함수 폐기물이 흡습제에 의해 탈수된다. 여기서, 상기 탈수 단계에 사용되는 흡습제는 에어로젤(Aerogel : 초다공성 나노구조 신소재)인 것이 바람직하다. 함수 폐기물 탈수 단계(S20)는 경우에 따라 생략될 수도 있다. 여기서 에어로젤로는 통상의 모든 친수성 에어로젤 제품의 적용이 가능할 수 있을 것이다.In the hydrous waste dewatering step (S30), the hydrous waste having passed the heavy metal reduction treatment step (S20) is dehydrated by the absorbent. Here, the moisture absorbent used in the dehydration step is preferably an airgel (Aerogel: super porous nanostructure new material). Water waste dewatering step (S20) may be omitted in some cases. Here, the airgel may be applicable to all conventional hydrophilic airgel products.

에어로젤이란, 규소산화물로 이뤄진 물질로, 머리카락 1만분의 1 굵기인 SiO2 실이 극히 성글게 얽혀 이루어진 구조이며, 실과 실 사이에 공기 분자들이 들어 있으며 부피의 98%를 공기가 차지한다. 지구상에서 가장 가벼운 고체로써(2002년 기네스북 등재), 특유의 기공구조로 인해 매우 우수한 물성을 지니고 있어 신소재로 주목받고 있다. 친수성 에어로젤의 경우 자기 무게의 100배 이상의 수분을 흡수할 수 있는 기능이 있다. 이와 같은 수분 흡수 기능은 함수폐기물의 함수비의 저감(탈수)에 탁월한 기능을 발휘한다. 그러므로 이 에어로젤은 함수폐기물의 고형화에 있어 가장 난점이었던 함수비 저감(탈수)에 있어 탁월한 해결책으로써 기능할 수 있게 되는 것이다. 에어로젤을 이용할 경우 하수 슬러지의 처리 물질인 '탈수케익-각종 오니토'를 비롯한 어떤 형태의 함수폐기물도 탈수 처리를 통해 고형화가 가능할 수 있다. An airgel is a material made of silicon oxide, a structure in which the SiO 2 yarn, which is one thousandth the thickness of the hair, is extremely intertwined, and air molecules are contained between the yarn and the air occupies 98% of the volume. As the lightest solid on the planet (registered in the Guinness Book of 2002), it is attracting attention as a new material because it has very excellent physical properties due to its unique pore structure. Hydrophilic airgel has the ability to absorb more than 100 times its own weight. Such a water absorption function is excellent in reducing the water content (dehydration) of water waste. Therefore, this aerogel can serve as an excellent solution to water content reduction (dehydration), which is the most difficult point in solidifying water waste. When airgel is used, any type of hydrous waste, including 'dehydrated cake-onitto', a sewage sludge treatment material, can be solidified through dehydration.

고형화 단계(S40)에서는 함수 폐기물 탈수 단계(S30)를 거쳐서 탈수 처리된 함수 폐기물에 토양 강화제 등의 폴리머제가 혼합되어 함수 폐기물이 고형화된다. 여기서 본 발명의 실시예에 적용되는 폴리머제는 토양 강화제 등의 용도로 사용되는 PX300인 것이 바람직할 수 있다. PX300은 미국의 G.M. Boston Company Intl., LLC(www.gmbostoncompany.com)의 특허 기술로써, 폴리머를 주성분으로 하여 효소 에멀전 등을 원료로 한 토양 강화제(Soil Stabilizer) 제품이며, 어떤 종류의 흙이라도 다른 교반 첨가제가 필요 없이 PX300 약액에 물과 혼합하여 현장토(on-site soil/현지토)를 강화 시키는 물질이다. 현재 각종 도로의 하부구조(보조 기반)의 토양강화제, 도로 사면(斜面) 토양의 침식방지제로 널리 사용되고 있고, 자전거 길, 산책로, 산길 등의 표토(表土) 강화(포장)처리 용도 등으로 사용되고 있으며, 흙벽돌 제조에도 이용되고 있다.In the solidification step (S40), the hydrous waste dehydrated through the hydrous waste dehydration step (S30) is mixed with a polymer such as a soil reinforcing agent to solidify the hydrous waste. Here, it may be preferable that the polymer agent applied to the embodiment of the present invention is PX300 used for use as a soil reinforcing agent. PX300 is G.M. It is a patented technology of Boston Company Intl., LLC (www.gmbostoncompany.com). It is a Soil Stabilizer product based on polymers and enzyme emulsions. It does not require any stirring additives for any kind of soil. PX300 chemical is mixed with water to strengthen the on-site soil. Currently, it is widely used as soil reinforcement of various substructures (subsidiary foundations) and erosion prevention of road slope soils, and is used for surface reinforcement (paving) treatment of bicycle paths, trails, and mountain roads. It is also used for the production of clay bricks.

이러한 PX300은 물만을 혼합하여 모든 종류의 토질(마사토, 황토, 화산재 토, 모래, 진흙)을 모두 강화시킬 수 있는 기능을 갖는다. 이에 따라, 탈수케이크의 주요 성분에도 SiO2, Al2O3 등의 흙 성분이 있고 또한 70~85%의 수분이 함유되어 있으므로, 전술한 에어로젤(초다공성 나노구조 신소재) 등으로 탈수케이크의 자체 함유 수분의 탈수 과정을 거친 후 PX300을 이용할 경우, 하수 슬러지의 처리 물질인 ‘탈수케이크-오니토’를 저렴한 비용과 매우 효율적이고 용이한 방법으로 고형화 가능할 수 있다. The PX300 combines only water to strengthen all types of soil (masato, loess, volcanic ash, sand, mud). Accordingly, since the main components of the dehydrated cake also have soil components such as SiO 2 and Al 2 O 3 , and contain 70 to 85% of moisture, the dehydrated cake itself may be formed using the above-mentioned aerogels (new super-porous nanostructure material). When PX300 is used after the dehydration of the water content, the treated material of sewage sludge 'dehydrated cake-onito' may be solidified at a low cost and in a very efficient and easy way.

다시 말해, PX300은 여러 종류의 흙을 강화시킬 때 오직 물만을 혼합 교반하여 사용하므로, PX300을 처리할 경우 '탈수케이크'의 자체 함유 수분을 활용하여 이를 효과적이고 경제적으로 강화(고형화)시킬 수 있게 되는 것이다. 아울러, PX300은 여름철 기준으로 화씨 212도(섭씨 약 100도)까지의 온도 저항성 및 도로 등의 용도에 충분히 적용 가능할 수 있을 정도의 압력 저항성이 실험 데이터 등을 통해 이미 입증되어 있다. In other words, PX300 uses only mixed and agitated water to reinforce various types of soil. Therefore, when PX300 is treated, it can effectively and economically strengthen (solidify) it by utilizing moisture contained in 'dehydrated cake' itself. Will be. In addition, the PX300 has been proven in experimental data such as temperature resistance up to 212 degrees Fahrenheit (about 100 degrees Celsius) in summer, and pressure resistance that can be sufficiently applied to road applications.

한편 본 발명은, 상기한 함수 폐기물의 고형화 방법에 의해 제조된 고형재를 이용한 산업자재를 제공할 수 있다. 다시 말해, 본 발명의 함수 폐기물의 고형화 방법에 의해 형성된 고형재를 직접적으로 이용하는 경우 이외에, 이러한 고형재가 일부 포함된 건설자재 등을 제공할 수 있도록 함으로써, 경제적이며 보다 친환경적인 산업자재의 제조를 가능하도록 하는 것이다.On the other hand, the present invention can provide an industrial material using a solid material produced by the solidification method of the above-mentioned water-containing waste. In other words, in addition to directly using the solid material formed by the solidification method of the water-containing waste of the present invention, it is possible to provide a construction material containing such a solid material, thereby manufacturing economic and more environmentally friendly industrial materials. To do that.

또한 본 발명은, 상기의 함수 폐기물의 고형화 방법에 의해 형성된 고형재를 이용하여 제조된 고형연료를 제공할 수 있다. 이러한 본 발명의 함수 폐기물의 고형화 방법을 이용한 고형재를 활용한 고형연료는, 석탄화력발전소 등 에너지를 대량으로 사용하는 발전소 및 시멘트 소성로 등 산업시설, 시설농가 및 일반 에너지 소비자 등의 다양한 주체가 사용 가능할 수 있도록 함으로써, CO2 저감 등을 통해 환경 및 경제에 일조할 수 있도록 한다는 등의 장점을 제공할 수 있다. 이때, 본 발명의 실시예에 따른 함수 폐기물의 고형화 방법에 의해 형성된 고형재를 이용하여 제조된 고형연료의 제조 과정에 사용되는 에어로젤로 유기질 에어로젤이 적용될 경우 더욱 바람직한 고형 연료를 제조할 수 있다.In addition, the present invention can provide a solid fuel produced using a solid material formed by the solidification method of the above-mentioned water-containing waste. The solid fuel using the solid material using the solidification method of the water-containing waste of the present invention is used by various entities such as industrial facilities such as power plants and cement kilns using large amounts of energy such as coal-fired power plants, facility farms and consumers of general energy. By making it possible, it can provide the benefits of contributing to the environment and economy, such as by reducing CO 2 . In this case, when the organic airgel is applied to the aerogel used in the manufacturing process of the solid fuel manufactured by using the solid material formed by the solidification method of the water-containing waste according to the embodiment of the present invention, a more preferable solid fuel may be manufactured.

이상 실시예를 들어 본 발명을 설명하였으나, 본 발명은 이에 제한되는 것은 아니다. 상기 실시예는 본 발명의 취지 및 범위를 벗어나지 않고 수정되거나 변경될 수 있으며, 당업자는 이러한 수정과 변경도 본 발명에 속하는 것임을 알 수 있을 것이다.Although the present invention has been described with reference to the above embodiments, the present invention is not limited thereto. The above embodiments may be modified or changed without departing from the spirit and scope of the present invention, and those skilled in the art will recognize that such modifications and changes also belong to the present invention.

Claims (11)

함수 폐기물에 폴리머제를 혼합하여 상기 함수 폐기물을 고형화시키는 고형화 단계를 포함하는 것을 특징으로 하는 함수 폐기물의 고형화 방법.And solidifying the water-containing waste by mixing a polymer with water-containing waste. 청구항 1에 있어서,The method according to claim 1, 상기 폴리머제는 G.M. Boston Company Intl.사의 토양강화제인 PX300인 것을 특징으로 하는 함수 폐기물의 고형화 방법.The polymer agent is G.M. Solidification method of water-containing waste, characterized in that the PX300, a soil hardener of Boston Company Intl. 청구항 1에 있어서,The method according to claim 1, 상기 함수 폐기물 고형화 단계 전의 함수 폐기물을 탈수시키는 함수 폐기물 탈수 단계를 더 포함하는 것을 특징으로 하는 함수 폐기물의 고형화 방법.And a hydrous waste dewatering step of dehydrating the hydrous waste before the hydrous waste solidification step. 청구항 3에 있어서,The method according to claim 3, 상기 함수 폐기물 탈수 단계에서는 상기 함수 폐기물을 흡습제를 이용하여 탈수시키는 것을 특징으로 하는 함수 폐기물의 고형화 방법.In the hydrous waste dewatering step, the hydrous waste is solidified by using a moisture absorbent. 청구항 4에 있어서,The method according to claim 4, 상기 흡습제는 친수성 에어로젤인 것을 특징으로 하는 함수 폐기물의 고형화 방법.And the hygroscopic agent is a hydrophilic airgel. 청구항 5에 있어서,The method according to claim 5, 상기 에어로젤은 친수성 유기질 에어로젤인 것을 특징으로 하는 함수 폐기물의 고형화 방법.Wherein said airgel is a hydrophilic organic airgel. 청구항 1에 있어서,The method according to claim 1, 상기 함수 폐기물 고형화 단계 전의 함수 폐기물의 중금속 성분을 저감시키는 중금속 저감 처리 단계를 더 포함하는 것을 특징으로 하는 함수 폐기물의 고형화 방법.And a heavy metal abatement treatment step of reducing the heavy metal component of the hydrous waste before the hydrous waste solidification step. 청구항 1에 있어서,The method according to claim 1, 고형화 대상인 함수 폐기물을 제공하는 함수 폐기물 제공 단계를 더 포함하며,Further comprising the step of providing a waste water to provide the waste water to be solidified, 상기 함수 폐기물 제공 단계를 통해 제공되는 함수 폐기물은 하수 또는 음식 슬러지 및 이의 탈수 케이크, 지하 저수조 슬러지 및 준설토 중 어느 하나인 것을 특징으로 하는 함수 폐기물의 고형화 방법.The water-containing waste provided through the water-containing waste providing step is any one of sewage or food sludge and its dewatered cake, underground reservoir sludge and dredged soil. 청구항 1 내지 청구항 7 중 어느 하나의 청구항에 따른 함수 폐기물의 고형화 방법에 의해 제조된 고형재.Solid material manufactured by the solidification method of the wastewater according to any one of claims 1 to 7. 청구항 9의 고형재를 포함하는 산업재.An industrial material comprising the solid material of claim 9. 청구항 9의 고형재를 포함하는 고형 연료.Solid fuel comprising the solid material of claim 9.
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