KR100292975B1 - Coagulant composition manufactured with fly ash from power plant using coal - Google Patents
Coagulant composition manufactured with fly ash from power plant using coal Download PDFInfo
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- KR100292975B1 KR100292975B1 KR1019980019926A KR19980019926A KR100292975B1 KR 100292975 B1 KR100292975 B1 KR 100292975B1 KR 1019980019926 A KR1019980019926 A KR 1019980019926A KR 19980019926 A KR19980019926 A KR 19980019926A KR 100292975 B1 KR100292975 B1 KR 100292975B1
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
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Abstract
Description
본 발명은 물을 정화 처리하기 위한 조성물에 관한 것으로서 좀더 상세하게는 열병합 발전소에서 폐기되는 석탄재를 이용하여 여기에 황산 마그네슘, 규산소다를 주성분으로 하고 그 외 첨가제로서 황산 알루미늄, 소석회, 산화 마그네슘을 첨가하여 물을 정화시키는 조성물에 관한 것이다.The present invention relates to a composition for purifying water, and more particularly, using coal ash discarded in a cogeneration plant, with magnesium sulfate and sodium silicate as main components, and adding aluminum sulfate, slaked lime and magnesium oxide as other additives. The present invention relates to a composition for purifying water.
현재 도시의 개발로 인한 축산폐수, 공장폐수, 농업 폐수의 유입으로 인하여 하천이나, 호수 등이 날로 오염되고 있으며 특히, 도시 생활하수의 오염은 해를 거듭할 수록 증가하고 있는 실정으로 하천이나, 호수의 오염으로부터 보호할 수 있는 각종 처리시설이 있기는 하나 기능부실로 효율적인 처리를 못하고 있는 것이 현실이다.Currently, rivers and lakes are contaminated due to the inflow of livestock waste, factory wastewater, and agricultural wastewater due to urban development.In particular, urban sewage pollution is increasing as the years go by. Although there are various treatment facilities that can protect against pollution, the reality is that they are not efficiently treated due to malfunction.
종래의 오. 폐수 처리시설은 대부분 미생물을 이용한 처리방식을 갖추고 있는데 호기성 오.폐수 처리시설은 오.폐수에 공기를 넣어서 호기성 미생물의 집합을 형성하는 것으로 겨울철 정화효율이 떨어지며 관리를 부주의하게 하면 정상적인 정화가 어려운 단점이 있고, 혐기성 오.폐수 처리시설은 처리시간이 많이 걸리고 악취와 해충의 발생이 심하며 처리면적을 과도하게 필요로 하는 문제점이 있었다. 이러한 문제점을 해소하기 위하여 선진국에서는 오.폐수 처리에 있어서 1차 화학처리 및 2차 생물학적처리를 하는 혼합방식을 채택하고 있는 실정이다.Conventional oh. Most wastewater treatment facilities have a treatment method using microorganisms, but aerobic wastewater treatment facilities form a collection of aerobic microorganisms by injecting air into the wastewater to reduce aerobic efficiency in winter. There is a problem that the anaerobic wastewater treatment facility takes a lot of treatment time, the generation of bad smell and pests, and excessively requires a treatment area. In order to solve this problem, developed countries are adopting the mixing method of primary chemical treatment and secondary biological treatment in wastewater treatment.
더욱이, 염색공장의 폐수는 색깔을 포함하고 있을 뿐만 아니라, 폐수량이 많은 것이 특징이며, 폐액성상도 각종염료 및 계면활성제 등의 성분을 포함하고 있고 시간이 지잠에 따라서 성상이 변할 수 있기 때문에 처리하는데 많은 어려움이 있었는바, 기존의 방법은 오존산화 염소흡기 등의 화학 처리와 염료처리 및 활성탄 규조토등으로 흡착처리를 하였으며 염료처리는 특수 고분자 응집제를 이용하였으나, 이러한 방법은 각 처리효과가 제한적이거나 비용 면에 있어서 고가의 처리비용을 요하는 문제점이 있었다.Furthermore, the wastewater of the dyeing plant is characterized by not only color, but also a large amount of wastewater, and the waste liquid phase also contains various dyes and surfactants, and because the properties may change over time. There were many difficulties. Conventional methods were treated with chemical treatment such as ozone chlorine intake, dye treatment, and activated carbon diatomaceous earth, and dye treatment used special polymer flocculant. In terms of cost, there is a problem that requires expensive processing costs.
이에, 본 발명은 이러한 문제점을 해결하고자 최근 열병합 발전소에서 유출되고 있고 그 처리 문제가 심각한 석탄재(플라이 애쉬)를 이용하여 물의 각종 오염 물질을 함유하는 수 처리용 조성물을 제공하고자 하는데 그 목적이 있다.Accordingly, an object of the present invention is to provide a composition for treating water containing various pollutants of water using coal ash (fly ash), which has recently been leaked from a cogeneration plant and has a serious problem in treating the cogeneration plant.
칼슘함량이 높은 C급의 석탄재는 연소과정에서 발생되는 SOX에 의한 대기오염을 막기 위하여 820℃-850℃의 낮은 연소온도에서 석회석을 주입하므로 용융상태에서 급냉시킬 때 형성되는 구형입자를 형성하지 아니하고 불균일한 입자를 형성하므로 물에 용이하게 용해되는 장점을 지니고 있다. 따라서, 본 발명자는 벤토나이트와 유사한 조성을 가지면서 동시에 CaO를 함유하고 있는 열병합발전소의 폐기물인 석탄재를 사용하여 물을 처리하는 조성물을 제공하기에 이른 것이다.Coal ash of high-grade calcium content of C, so the injection of limestone at a low combustion temperature of 820 ℃ -850 ℃ to prevent air pollution caused by SO X generated in the combustion process to form a spherical particle formed when quenched from a molten state In addition, since it forms non-uniform particles, it has the advantage of being easily dissolved in water. Accordingly, the present inventors have come to provide a composition for treating water using coal ash, which is a waste of a cogeneration plant having a composition similar to bentonite and containing CaO.
본 발명의 또 다른 목적은 열병합발전소의 폐기물인 석탄재를 이용함으로서 석탄재의 처리비용을 절감코자 하는 것이며, 동시에 석탄재의 폐기시 발생하는 분진으로 인한 공해방지에도 일익을 담당하고자 하는데 본 발명의 목적이 있다.Another object of the present invention is to reduce the processing cost of coal ash by using coal ash, which is a waste of a cogeneration plant, and at the same time, to play a role in preventing pollution caused by dust generated during the disposal of coal ash. .
본 발명의 또 하나의 목적은 기존의 생물학적 처리에 비하여 저렴하고 처리면적 또한 최소화될 뿐 만 아니라, 처리과정이 매우 간단하고 그 효과가 우수한 수처리용 조성물을 제공하고자하는데 있다.Another object of the present invention is to provide a composition for water treatment that is not only cheaper than conventional biological treatments and also minimizes the treatment area, but also has a very simple treatment and an excellent effect.
이러한 본 발명의 목적을 달성하기 위하여 열병합 발전소에서 쉽게 구할 수 있는 석탄재(플라이 애쉬)를 이용하여 여기에 규산소다 및 황산 마그네슘을 믹서에 넣어 충분히 혼합한 후 처리하고자 하는 폐수에 따라서 황산 알루미늄, 산화 마그네슘 및 소석회를 첨가함으로서 본 발명의 수처리 조성물이 제조된다.In order to achieve the object of the present invention, by using coal ash (fly ash), which is easily available in a cogeneration plant, sodium silicate and magnesium sulfate are put in a mixer, and then sufficiently mixed with aluminum sulfate and magnesium oxide depending on the wastewater to be treated. And by adding slaked lime, the water treatment composition of the present invention is prepared.
이때, 사용되는 석탄재는 석탄연소시 전기집진기에서 발생되며 주로 칼슘-알루미노-실리게이트를 형성하고 있으며, SiO2약 50%, Al2O3약 17.7%, Fe2O3약 7%. Mg0 약 3.4%, CaO 약 12%, Na2O 약 3.5%, K2O 약 1.2%등을 함유하고 있는 광물질이며, 다음과 같은 특징이 있는 바, 수처리용 성분을 적합함이 본 발명을 통하여 밝혀진 것이다.At this time, the coal ash used is generated in the electrostatic precipitator during coal combustion, and mainly forms calcium-alumino-silicon, about 50% SiO 2 , about 17.7% Al 2 O 3 , about 7% Fe 2 O 3 . Minerals containing about 3.4% Mg0, about 12% CaO, about 3.5% Na 2 O, about 1.2% K 2 O, etc., and have the following characteristics. It turns out.
즉, 석탄재는 그 비중이 2.2 내지 2.8 정도이므로 플록(FLOC)의 침강성을 높이고, 낮은 연소온도를 거치므로 실리케이트의 입자가 중공화되어 있고 불규칙한 입자로 표면이 거친 바, 흡착성이 매우 좋고, 연소시 연소온도, 원탄의 분쇄상태 및 특성, 연료와 공기의 비율에 따라서 미연탄이 탄소입자 형태로 석탄재의 입자중 최대 16%까지 함유되기도 하는데 이는 활성탄의 기능을 하게 되며, 연소시 발생하는 SOX를 제거하기 위하여 석회석을 주입하고 유동화 시키는 연소 시스템을 채택하기 때문에 CaO의 함량이 15-30%가 되어 플록형성시 필요한 알칼리도 제공이 되는 이점을 갖는 바, 수처리 조성물로서 유용함을 알 수 있는 것이다.In other words, coal ash has a specific gravity of 2.2 to 2.8, which increases the flocciability of floc and lower combustion temperature, so that the silicate particles are hollowed out and the surface is rough with irregular particles. combustion temperature, and thus the pulverization conditions and characteristics, the ratio of fuel and air in the raw coal in the US briquettes is also contained in the carbon particles form up to 16% of the particles of coal ash, which will be a function of the activated carbon, the SO X occurring in the combustion Since it adopts a combustion system to inject and fluidize limestone for removal, the content of CaO is 15-30%, which has the advantage of providing the alkalinity necessary for floc formation, which is useful as a water treatment composition.
본 발명의 조성물에 포함된 성분중 황산마그네슘은 석탄재내의 CaO와 반응하여 응집 흡착침강의 효율을 높이고 규산소다는 플록을 활성화 시켜 단단한 플록의 형성을 도우며 흡착능력을 높인다. 그외 성분중 소석회는 용액중 CO, CO2기체등과 반응하여 탈취 및 색깔을 감소시키며, 황산 알루미늄은 응집제로서 반응을 함은 물론 PH를 조절하고 탈색효과를 높이고 산화 마그네슘은 흡착 응집 침전을 촉진시키기 위하여 조성물에 첨가된다.Magnesium sulfate among the components included in the composition of the present invention reacts with CaO in coal ash to increase the efficiency of flocculation adsorption settling, and soda silicate activates the floc to assist in the formation of a hard floc and to increase the adsorption capacity. Among other components, slaked lime reacts with CO and CO 2 gas in solution to reduce deodorization and color.Aluminum sulfate reacts as a coagulant, adjusts pH, enhances decolorization effect, and magnesium oxide promotes adsorption flocculation precipitation. To the composition.
본 발명에 있어서 이러한 성분의 함유량은 석탄재 60-90중량%, 규산소다1-10중량%, 황산 마그네슘 1-10중량%이며, 그외 폐수의 종류에 따라서 황산 알미늄 10-40중량%, 산화 마그네슘 5-10%, 소석회 10-15%로 첨가될 수 있다. 이들 성분은 폐수의 종류에 따라서 다양하게 그 조성을 변화할 수 있다.In the present invention, the content of such components is 60-90 wt% of coal ash, 1-10 wt% of sodium silicate, 1-10 wt% of magnesium sulfate, and 10-40 wt% of aluminum sulfate and magnesium oxide 5 depending on the type of wastewater. -10%, slaked lime 10-15% can be added. These components can vary in composition depending on the kind of wastewater.
표 1은 각 폐수의 종류에 따른 조성물의 적당한 조성비를 나타낸다.Table 1 shows the appropriate composition ratio of the composition according to each kind of wastewater.
이하, 실시예를 통하여 본 발명을 좀더 상세히 설명하고자 한다. 그러나, 이러한 실시예에 본 발명의 권리 범위가 제한되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples. However, the scope of the present invention is not limited to these embodiments.
(실시예1)Example 1
염색공장 폐수 처리용 조성물, 황산 알루미늄분말을 100-200 메쉬(mesh)로 분쇄한 후 열병합 발전소에서 방출된 플라이 애쉬, 황산마그네슘, 규산소다를 표 2와 같은 비율로 믹서에 넣고 충분히 혼합한 후 건조하여 본 발명의 조성물을 제조한다.The composition for wastewater treatment of dyeing plant and aluminum sulfate powder are pulverized into 100-200 mesh, and fly ash, magnesium sulfate, and sodium silicate discharged from the cogeneration plant are put in a mixer in the ratio as shown in Table 2, mixed well, and dried. To prepare a composition of the present invention.
미처리 폐수를 500㎖ 채취하여 jar tester로 5분간 교반한 후 PH를 7정도로 맞춘 후 상기에서 제조된 본 발명의 조성물을 1g 가하여 약 20-30분간 교반한다. 약 5내지 10분이 경과하면 침전물과 상등액이 완전히 분리된다.500 ml of untreated wastewater was collected and stirred for 5 minutes with a jar tester, and the pH was adjusted to about 7, and then 1 g of the composition of the present invention prepared above was added and stirred for about 20-30 minutes. After about 5 to 10 minutes, the precipitate and the supernatant are completely separated.
처리된 폐수의 처리율은 표3과 같다.The treatment rates of the treated wastewater are shown in Table 3.
이러한 처리율을 볼 때 본 발명의 조성물은 오염물질제거에 탁월한 효과가 있음을 알 수 있다.In view of the treatment rate, it can be seen that the composition of the present invention has an excellent effect on removing contaminants.
본 발명의 수처리용 조성물은 열병합 발전소에서 폐기되는 석탄재를 이용하여 그외에 규산 소다, 황산마그네슘을 혼합하여 수처리용 조성물로 사용함으로서 기존의 생물학적 처리 방법에 비하여 훨씬 향상된 효과를 갖는다.The water treatment composition of the present invention has a much improved effect compared to the conventional biological treatment method by using the coal ash discarded in the cogeneration plant, and mixed with sodium silicate and magnesium sulfate as a water treatment composition.
즉, 본 발명의 조성물은 열병합 발전소에서 폐기되며 그 매립에 과다한 비용이 소요되는 석탄재를 이용함으로서 이러한 처리 비용을 줄일 수 있는 효과를 갖는 것이며, 그 분진으로 인하여 발생할 수 있는 공기오염의 문제를 오히려 수처리제로 사용하여 소진함으로서 경제적 및 환경적으로 유용한 효과를 갖는 것이다.In other words, the composition of the present invention has the effect of reducing such processing costs by using coal ash that is disposed of in a cogeneration plant and requires excessive costs for its landfill, and rather than a problem of air pollution that may occur due to dust. By using it, it is economically and environmentally useful.
또한, 본 발명의 조성물은 열병합 발전소에서 용이하게 구할 수 있는 석탄재 및 규산소다 및 황산마그네슘을 사용함으로서 수처리 비용을 절감할 수 있는 효과를 가지며, 그 효과면에 있어서도 다양한 오염물질 즉, S.S, 총 인 및 총 질산, 중금속 및 색깔을 함유한 폐수에 탁월한 효과를 나타내며, 특히, BOD, COD를 현저하게 낮출 수 있는 바, 기존의 처리시설에 비하여 월등한 효과를 낳는다. 더욱이, 잘 침강하지 아니하는 폐수, 즉 계면활성제, 콜로이드성의 물질이 포함된 폐수를 물과 고형물질로 쉽게 분리하여 정화시킬 수 있는 장점을 갖는다.In addition, the composition of the present invention has the effect of reducing the cost of water treatment by using coal ash and sodium silicate and magnesium sulfate which can be easily obtained in a cogeneration plant, and in terms of its effects, various contaminants, that is, SS, total phosphorus And it shows an excellent effect on the waste water containing total nitric acid, heavy metals and colors, in particular, can significantly lower the BOD, COD, resulting in a superior effect than the existing treatment facilities. Moreover, it has the advantage of easily separating and purifying wastewater which does not settle well, that is, wastewater containing a surfactant and a colloidal substance into water and a solid substance.
또한, 소량으로도 다량의 폐수를 정화할 수 있는 바, 그 효율면에서 뛰어나며, 그 정화 처리시간이 매우 짧은 효과를 가지며, 또한 생물학적인 처리방법에 있어서 문제점중의 하나인 그 처리 시설면적을 최소화하는 효과를 갖는다.In addition, it is possible to purify a large amount of wastewater in a small amount, and is excellent in terms of efficiency, the purification treatment time has a very short effect, and minimizes the area of the treatment facility, which is one of the problems in biological treatment methods. Has the effect.
따라서, 본 발명은 짧은 시간에 적은 면적에서 고 효율로 오.폐수를 저가로 처리할 수 있는 조성물인 것이다.Therefore, the present invention is a composition capable of treating wastewater at low cost with high efficiency in a small area in a short time.
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| KR1019980019926A KR100292975B1 (en) | 1998-05-29 | 1998-05-29 | Coagulant composition manufactured with fly ash from power plant using coal |
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| KR1019980019926A KR100292975B1 (en) | 1998-05-29 | 1998-05-29 | Coagulant composition manufactured with fly ash from power plant using coal |
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| KR19990086788A KR19990086788A (en) | 1999-12-15 |
| KR100292975B1 true KR100292975B1 (en) | 2001-10-26 |
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| KR102231686B1 (en) * | 2020-11-09 | 2021-03-24 | 주식회사 이비알 | Combustion additive composition for preventing fouling and corrosion of biomass and waste incineration boilers using coal ash and sulfuric acid |
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| KR20030071442A (en) * | 2002-02-28 | 2003-09-03 | 박상숙 | Solidification of coal fly ash by mixing sulfuric acid |
| KR100702065B1 (en) | 2006-03-28 | 2007-04-02 | 주식회사한국지씨엠 | Water treatment particle for simultaneously removal of suspend solid, nitrate and phosphate |
| KR102145031B1 (en) * | 2019-10-25 | 2020-08-18 | 고려대학교 산학협력단 | Adsorbent of organic and inorganic contaminants and manufaturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0824846A (en) * | 1994-05-12 | 1996-01-30 | Wakimura Mamoru | Purification of polluted water hard to treat |
| KR970006140A (en) * | 1995-07-07 | 1997-02-19 | Automatic loading device of sheet glass products |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0824846A (en) * | 1994-05-12 | 1996-01-30 | Wakimura Mamoru | Purification of polluted water hard to treat |
| KR970006140A (en) * | 1995-07-07 | 1997-02-19 | Automatic loading device of sheet glass products |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102231686B1 (en) * | 2020-11-09 | 2021-03-24 | 주식회사 이비알 | Combustion additive composition for preventing fouling and corrosion of biomass and waste incineration boilers using coal ash and sulfuric acid |
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