WO2013032086A1 - Durcisseur de boue organique, et procédé de production de sol artificiel utilisant ce durcisseur - Google Patents

Durcisseur de boue organique, et procédé de production de sol artificiel utilisant ce durcisseur Download PDF

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Publication number
WO2013032086A1
WO2013032086A1 PCT/KR2012/002033 KR2012002033W WO2013032086A1 WO 2013032086 A1 WO2013032086 A1 WO 2013032086A1 KR 2012002033 W KR2012002033 W KR 2012002033W WO 2013032086 A1 WO2013032086 A1 WO 2013032086A1
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WIPO (PCT)
Prior art keywords
sludge
weight
parts
organic sludge
artificial soil
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Ceased
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PCT/KR2012/002033
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English (en)
Korean (ko)
Inventor
문경주
박원춘
윤성진
윤형선
곽금옥
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CMD GROUP Co Ltd
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CMD GROUP Co Ltd
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Filing date
Publication date
Priority claimed from KR1020110089122A external-priority patent/KR101185428B1/ko
Priority claimed from KR1020110097233A external-priority patent/KR101289825B1/ko
Application filed by CMD GROUP Co Ltd filed Critical CMD GROUP Co Ltd
Publication of WO2013032086A1 publication Critical patent/WO2013032086A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D3/00—Calcareous fertilisers
    • C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
    • 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
    • C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
    • 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
    • C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
    • C02F11/145—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances using calcium compounds

Definitions

  • the present invention relates to a solidifying agent for effectively solidifying organic sludge, such as sewage sludge, and an artificial soil manufacturing method using the same. More specifically, absorption of CaO contained in a large amount of paper sludge incineration, high calcium fly ash, and high calcium slag dust
  • the artificial soil is produced by reducing the moisture content of high functional sludge such as sewage sludge by using heat generation and volume expansion, and by adding acidic substances to the manufactured artificial soil, it is possible to generate odor such as ammonia odor due to high alkali. It relates to an organic sludge solidifying agent to be blocked by the artificial soil manufacturing method using the same.
  • sewage sludge is an organic sludge composed of carcasses such as microorganisms remaining after purification of domestic sewage at a sewage treatment plant, and its water content reaches 80 to 90% even after dehydration by a dehydrator.
  • carcasses such as microorganisms remaining after purification of domestic sewage at a sewage treatment plant
  • water content reaches 80 to 90% even after dehydration by a dehydrator.
  • it has been conventionally treated by methods such as ocean dumping, landfilling and the like.
  • the present invention has been made to solve the above-described problems, the object of the present invention is to use organic paper sludge and the like by using the absorption of the CaO contained in a large amount of paper sludge incineration ash and high calcium fly ash and high calcium slag dust, exothermic and volume expansion Artificial soil is produced by reducing the moisture content of water-containing sludge, and organic sludge solidifying agent which fundamentally blocks the generation of odors such as ammonia odor due to high alkali by mixing acidic material with the manufactured artificial soil and artificial soil using the same In providing a method.
  • the solidifying agent for solidifying the organic sludge according to the present invention has a calcium oxide (CaO) content relative to 100 parts by weight of the paper sludge incineration ash having a calcium oxide (CaO) content of 35 to 70%. It contains 10 to 200 parts by weight of 40% to 80% high calcium slag dust.
  • the paper sludge incineration ash it is preferable to further include 10 to 50 parts by weight of high calcium fly ash generated in a furnace desulfurization type coal combustion boiler and having a calcium oxide content of 40 to 75%.
  • the paper sludge incineration material, high calcium slag dust and high calcium fly ash preferably has a specific surface area of 2,000 ⁇ 9,000 / g.
  • a heating agent is further included to increase the exothermic reaction with the organic sludge, and the heating agent is preferably any one or a mixture of two or more selected from the group consisting of quicklime powder, light dolomite powder, and petroleum coke ash powder.
  • the heat generating agent is preferably mixed 5 to 50 parts by weight based on 100 parts by weight of the papermaking sludge incinerator.
  • a pH reducing agent is further included in order to prevent odor generation and heavy metal elution of the solidified organic sludge
  • the pH reducing agent is an acid component powder suitable for sulfuric acid in powder, and SAS (a by-product generated during the polysilicon manufacturing process). It is preferably one or a mixture of two or more selected from the group consisting of Sodium Aluminum Sulfate (SAF) powder and Sodium Aluminum Fluorid (SAF) powder.
  • the pH reducing agent is preferably added to 10 to 100 parts by weight based on 100 parts by weight of the papermaking sludge incineration ash.
  • Artificial soil manufacturing method comprises the steps of 1) preparing a solidifying agent of any one of claims 1 to 5; 2) measuring 5 to 80 parts by weight of the solidifying agent based on 100 parts by weight of organic sludge; 3) mixing the metered organic sludge with a solidifying agent; And 4) curing the mixture of organic sludge and solidifying agent.
  • step 4 5) adding and mixing the pH reducing agent to the mixture is further added.
  • the pH reducing agent is preferably mixed 5 to 50 parts by weight based on 100 parts by weight of the papermaking sludge incineration ash.
  • the high-calcium slag dust contains a large amount of Free-CaO and FeO, which is very exothermic and has a high exothermic temperature.
  • FIG. 1 is a diagram illustrating a process of generating high calcium fly ash in a coal-fired boiler which does in-furnace desulfurization without providing a separate desulfurization facility.
  • Figure 2 illustrates a process for generating fly ash in a coal-fired power plant equipped with a separate desulfurization facility.
  • the organic sludge solidifying agent according to the present invention is a paper sludge incinerator having a calcium oxide (CaO) content of 35% to 70%, a high calcium fly ash having a calcium oxide (CaO) content of 40 to 75%, and a calcium oxide (CaO) content It contains 40 to 80% high calcium slag dust.
  • the high calcium fly ash is preferably used that is generated in the furnace desulfurization coal combustion boiler.
  • fly ash generated from a coal-fired boiler is recycled to concrete admixtures, fly ash containing a large amount of calcium oxide cannot be used as concrete admixtures due to its absorption, heat generation, and expansion characteristics.
  • KS the coal-fired fly ash standard with high calcium oxide content is not established.
  • the paper sludge incineration material uses limestone fine powder as a filler to reduce the amount of pulp used in the paper manufacturing process and to improve the quality of the paper.
  • the limestone fine powder discharged in the form of sludge is incinerated in a boiler. Incinerator having a high content of the decarbonated calcium oxide is generated.
  • blast furnace slag among the large amount of steel slag generated in the steelmaking process is recycled almost entirely as a substitute for cement raw materials or aggregates.
  • converter slag contains a large amount of Fe and is especially expandable due to free CaO (Free CaO). Therefore, not only can not be recycled as civil engineering building materials, but also in the case of electric furnace slag has a high Fe content and high specific gravity, which is not used as a building material and is almost discarded.
  • the slag dust which is the particulate dust collected in the dust collector during the crushing process, also contains the CaO component and Since it contains a large amount of FeO components, it has absorption, heat generation, and expansion characteristics, making it impossible to use as a concrete admixture.
  • the present invention is to use paper sludge incineration and high calcium fly ash and high calcium slag dust that can not be used as a concrete admixture.
  • the high calcium slag dust has a high exothermic temperature and absorption ability when contacted with moisture by a large amount of free-CaO and FeO components.
  • it contains a large amount of CaO component than the high calcium fly ash, which is used as a raw material of the hardening agent has a higher exothermic temperature and more excellent absorption capacity, thereby reducing the amount of quicklime and light dolomite used as a heating agent.
  • the specific surface area of the papermaking sludge ash, high calcium fly ash, and high calcium slag dust is preferably 2,000 to 9,000 / g. If the specific surface area is less than 2,000 / g, there is a lack of fine powder and the activity is lowered. Therefore, the water content reduction effect is lowered when the organic sludge is solidified. If the specific surface area is more than 9,000 / g, the apparent density is lowered during the transfer of the solidifying agent. It scatters and facility operability falls.
  • Fly ash is produced in a coal-fired power plant, and in particular, the fly ash produced in a power plant having a furnace desulfurization method has a high content of calcium oxide. In the furnace desulfurization method, because the mixed combustion of coal and limestone, the fly ash contains a large amount of free CaO.
  • Figure 1 is a schematic diagram showing a high calcium fly ash generating process of the furnace desulfurization coal fired boiler.
  • fly ash produced in power plants with separate desulfurization plants has less than 5% calcium oxide.
  • 2 is a schematic diagram showing a fly ash generating process of a coal-fired power plant equipped with a separate desulfurization facility.
  • Table 1 shows the difference between the power plant fly ash with separate wet desulfurization and the high calcium fly ash in the furnace.
  • fly ash produced by the furnace desulfurization method contains a large amount of calcium oxide, but the fly ash produced in a facility equipped with a separate desulfurization device contains a very small amount of calcium oxide. Therefore, as described above, fly ash generated in a facility having a separate desulfurization device contains a small amount of calcium oxide can be recycled as a concrete admixture.
  • the solidifying agent of the present invention uses high-calcium fly ash and high-calcium slag dust generated from paper sludge incinerator and non-reactor desulfurization coal-fired boilers as concrete admixtures as main raw materials.
  • the mixing ratio of the high calcium fly ash generated from the paper sludge incinerator and the furnace desulfurization coal combustion boiler is preferably 10 to 50 parts by weight of the high calcium fly ash generated from the furnace desulfurization coal combustion boiler, based on 100 parts by weight of the paper sludge incinerator. If the amount of high calcium fly ash generated in the desulfurization type coal-fired boiler is less than 10 parts by weight, the exothermic performance is lowered. If it is more than 50 parts by weight, the mixture of the organic sludge and the hardener is kneaded and the equipment mobility is reduced. .
  • the mixing ratio of the papermaking sludge incinerator and the high calcium slag dust is preferably 10 to 200 parts by weight of high calcium slag dust with respect to 100 parts by weight of the papermaking sludge incinerator.
  • curing agent becomes dough-tough, and facility mobility falls.
  • the solidifying agent according to the present invention further includes a heat generating agent when organic sludge has a high moisture content due to seasonal factors or requires more heat for other reasons.
  • the heat generating agent includes quicklime powder, light dolomite powder, and petroleum coke incineration powder. It is preferably any one selected from the group consisting of or a mixture of two or more.
  • the quicklime powder is a product obtained by calcining limestone at a high temperature, decarbonated, and then processed into a powder having a constant particle size, which is generally obtained on the market, and has a CaO content of 85% or more.
  • the light dolomite powder is a product obtained by calcining dolomite at high temperature and then decarbonated into a powder having a constant particle size, which is generally obtained on the market, and has a CaO + MgO content of 80% or more.
  • the petroleum coke ash is a raw material used in place of coal when high calorie and combustion efficiency is required. This also mixes limestone for desulfurization, and decarbonated calcium oxide particles occupy most of the ash. , Exothermic and volume expansion.
  • the heat generating agent is preferably mixed 5 to 50 parts by weight based on 100 parts by weight of the papermaking sludge incinerator. If the amount of the heat generating agent is less than 5 parts by weight, the heat generation when reacting with the sludge is insufficient, and the water content reduction effect is lowered. There is a risk of lowering the productivity.
  • the solidifying agent according to the present invention is an acid component suitable for powders such as silica sand, fly ash, metakaolin, and by-products generated during the production process of polysilicon in order to prevent odor from occurring in artificial soil which is a solid of organic sludge.
  • Phosphorus reducing agents such as phosphorus aluminum aluminum sulfide (SAS) powder and sodium aluminum fluoride (SAF) powder may be further incorporated.
  • SAS phosphorus aluminum aluminum sulfide
  • SAF sodium aluminum fluoride
  • the mixing amount of the pH reducing agent is mixed with 5 to 50 parts by weight based on 100 parts by weight of the papermaking sludge incinerator when prepared by pre-injection into a solidifying agent. If the amount of the pH reducing agent is less than 5 parts by weight based on 100 parts by weight of the papermaking sludge incinerator, there is no pH reduction effect. When the amount of the pH reducing agent is more than 50 parts by weight, the economical efficiency is reduced and the solids become tough.
  • the pH reducing agent when the pH reducing agent is post-added to the organic sludge solidified, 10 to 100 parts by weight with respect to 100 parts by weight of the paper sludge incineration ash is added and mixed. If the amount of the pH reducing agent is less than 10 parts by weight based on 100 parts by weight of the papermaking sludge incinerator, there is no pH reduction effect. If the amount of the pH reducing agent exceeds 100 parts by weight, the economical efficiency is lowered and the solidity of the solids is increased.
  • the above-mentioned solidifying agent is prepared, and then 5 to 80 parts by weight of the solidifying agent is uniformly mixed with respect to 100 parts by weight of sewage sludge. If the content of the solidifying agent is mixed at less than 5 parts by weight, the water content is not sufficiently reduced, so that it cannot be used as a cover material. If the content is more than 80 parts by weight, the water content is too low, the solids are scattered, the cover work is difficult, and the economic efficiency is reduced.
  • the mixture of the sewage sludge and the hardener is cured at room temperature or heated until the moisture content is 60% or less.
  • the mixture is post-added with a pH reducing agent.
  • the water content was measured by the KS F 2306 method and the compressive strength test was performed by the KS F 2343 method.
  • the moisture content of artificial soils prepared by Examples 1, 2, 3 and Comparative Example 1 according to time is shown in Table 2 below. As confirmed in Table 2, although the water content of the sewage sludge before the solidifying agent mixing was 81%, it can be seen that the water content rapidly decreases over time. The moisture content is greatly reduced because, as described above, the exothermic reaction occurs immediately after the solidifying agent is mixed with the sewage sludge and the hydration reaction proceeds simultaneously. In addition, the water content gradually decreases due to hydrate formation and natural drying over time. After 3 days of natural curing, it is expected to not only be easy to handle but also to increase the compressive strength.
  • Example 1 exhibited a water content reduction effect almost similar to that of Comparative Example 1, even though a heat generating agent was not added. This is due to the exothermic ability of CaO in high calcium slag dust and high calcium fly ash and the absorption of moisture.
  • Example 1 was 3.4kgf / cm 2
  • Comparative Example 1 was found to be 2.8kgf / cm 2 .
  • This coriander up the modification of the water saving and sewage sludge by the agent and mixed upon absorption exotherm obtained compacted promoting effect done danrip screen of the particles and the calcium silicate reaction induced by CaO and SiO 2 component to secure the compression strength This is because the solidification reaction can be increased to increase the strength.
  • the water content of sewage sludge is relatively lowered due to the absorbency of the solidifying agent, and the fine clay and colloidal components are separated by the absorbent of the solidifying agent and ion exchange, pozzolanication and carbonation reaction, and the particle size distribution is changed to improve the quality soil. It is judged that uniaxial compressive strength increases.
  • the Example further contains high calcium slag dust, which further increases the water saving and the sludge reforming effect due to the absorption exothermic reaction, and the slag component in the form of fine powder is subjected to alkali stimulation of calcium hydroxide, resulting in an acidic coating. As it breaks down, the latent hydroponic system is activated, increasing the solidification strength.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

La présente invention concerne un durcisseur permettant de durcir et traiter efficacement une boue organique telle qu'une boue résiduaire, ainsi qu'un procédé de production de sol artificiel utilisant ce durcisseur; elle concerne plus spécifiquement un durcisseur de boue organique et un procédé de production de sol artificiel utilisant ce durcisseur, faisant intervenir les effets de l'absorption, l'émission thermique et l'expansion volumétrique de l'oxyde de calcium (CaO) contenu en grandes quantités dans les cendres de boue de papier et dans la poussière de scories à forte teneur en calcium, pour réduire la quantité d'eau dans une boue présentant une forte teneur en eau, comme la boue hydratée, et pour produire un sol artificiel, ainsi que pour mélanger une substance acide dans le sol artificiel ainsi produits de manière à empêcher l'apparition d'une odeur d'ammoniac causée par la forte alcalinité et d'autres mauvaises odeurs à la source. Selon la présente invention, ce durcisseur de boue organique présente 10 à 200 parties en poids d'une poudre de scorie de calcium possédant une teneur en CaO de 40 à 80 %, par rapport à 100 parties en poids d'une cendre de boue de papier possédant une teneur en CaO de 35 à 70 %.
PCT/KR2012/002033 2011-09-02 2012-03-21 Durcisseur de boue organique, et procédé de production de sol artificiel utilisant ce durcisseur Ceased WO2013032086A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020110089122A KR101185428B1 (ko) 2011-09-02 2011-09-02 유기성 슬러지 고화제 및 이를 이용한 인공토양 제조방법
KR10-2011-0089122 2011-09-02
KR1020110097233A KR101289825B1 (ko) 2011-09-27 2011-09-27 유기성 슬러지 고화제 및 이를 이용한 인공토양 제조방법
KR10-2011-0097233 2011-09-27

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WO2013032086A1 true WO2013032086A1 (fr) 2013-03-07

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104496693A (zh) * 2014-12-30 2015-04-08 清华大学 一种适用于草坪草的混合栽培基质及其应用
CN105733734A (zh) * 2016-03-16 2016-07-06 中国科学院城市环境研究所 一种污水厂污泥与焦粉混合制备燃料的方法与装置
CN107245338A (zh) * 2016-08-22 2017-10-13 贾方平 一种修道改良土壤结构的复合制剂及其制备方法
CN115010425A (zh) * 2022-05-17 2022-09-06 中国地质大学（武汉） 工业矿渣联合废弃聚苯乙烯泡沫颗粒的淤泥固化剂

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JP2004323599A (ja) * 2003-04-22 2004-11-18 Jfe Material Co Ltd 土壌固化剤及び土壌固化方法
JP2005187620A (ja) * 2003-12-25 2005-07-14 Toa Harbor Works Co Ltd 固化材組成物
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KR101055317B1 (ko) * 2011-02-15 2011-08-09 주식회사 씨엠디기술단 유기성 슬러지 고화제 및 이를 이용한 인공토양 제조방법

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104496693A (zh) * 2014-12-30 2015-04-08 清华大学 一种适用于草坪草的混合栽培基质及其应用
CN104496693B (zh) * 2014-12-30 2017-04-19 清华大学 一种适用于草坪草的混合栽培基质及其应用
CN105733734A (zh) * 2016-03-16 2016-07-06 中国科学院城市环境研究所 一种污水厂污泥与焦粉混合制备燃料的方法与装置
CN107245338A (zh) * 2016-08-22 2017-10-13 贾方平 一种修道改良土壤结构的复合制剂及其制备方法
CN107245338B (zh) * 2016-08-22 2021-04-09 浙江中垚环保科技有限公司 一种修道改良土壤结构的复合制剂及其制备方法
CN115010425A (zh) * 2022-05-17 2022-09-06 中国地质大学（武汉） 工业矿渣联合废弃聚苯乙烯泡沫颗粒的淤泥固化剂

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