KR20200131628A - Composition for neutralizing acidic waste water or harmful gas - Google Patents

Composition for neutralizing acidic waste water or harmful gas Download PDF

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KR20200131628A
KR20200131628A KR1020190056465A KR20190056465A KR20200131628A KR 20200131628 A KR20200131628 A KR 20200131628A KR 1020190056465 A KR1020190056465 A KR 1020190056465A KR 20190056465 A KR20190056465 A KR 20190056465A KR 20200131628 A KR20200131628 A KR 20200131628A
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acidic
gas
composition
wastewater
neutralizing
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서정봉
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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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/38—Removing components of undefined structure
    • B01D53/40—Acidic components

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Abstract

The present invention relates to a composition for neutralizing acidic wastewater or acidic harmful gas. The composition of the present invention reduces the amount of sodium hydroxide treated as toxic substances and the amount of calcium hydroxide generating a lot of landfill waste, has a neutralizing effect similar to that of using each of the sodium hydroxide and a calcium compound used in the past as a mixed alkaline agent produced by relatively increasing the amount of sodium carbonate, reduces the amount of landfill waste generated while being easy to manage by being classified as a non-hazardous chemical substance, and has price competitiveness. Therefore, the neutralization composition of the present invention can be very usefully utilized in the industrial fields related to the treatment of acidic wastewater or acidic harmful gas.

Description

산성 폐수 또는 산성 유해가스 중화용 조성물{Composition for neutralizing acidic waste water or harmful gas}Composition for neutralizing acidic waste water or harmful gas}

본 발명은 산성 폐수 또는 산성 유해가스 중화용 조성물에 관한 것이다.The present invention relates to a composition for neutralizing acidic wastewater or acidic harmful gas.

산성폐수는 석유 정제공장, 유기 합성공장 등으로부터 배출되는 대량, 고농도의 무기폐산을 포함한 폐수를 일컫는 것으로, 하수관과 각종 하수처리의 금속성 기기류를 부식시키고 하수처리에서는 pH 7.0~7.4에서 활성화되는 미생물의 활동을 저해한다. 하수 속에 황화물이 많으면 황화수소가스를 발생시키고 시안이 함유되어 있으면 시안가스를 발생시킬 우려가 있어 모두 위험하다. 폐수가 황산인 경우는 알칼리제로 중화침전처리를 하고 유기산인 경우는 중화 후 생물학적 처리를 하여 방류해야 하며, 산성농도가 높을 때는 증발, 농축 등으로 산성성분을 회수해야 한다.Acid wastewater refers to wastewater containing large amounts of high-concentration inorganic wastewater discharged from petroleum refineries and organic synthesis plants. It corrodes sewage pipes and metallic equipment of various sewage treatment, and in sewage treatment, microorganisms that are activated at pH 7.0~7.4 Impedes activity. If there is a lot of sulfide in sewage, hydrogen sulfide gas is generated, and if cyanide is contained, there is a concern that cyanide gas is generated. If the wastewater is sulfuric acid, it must be neutralized and precipitated with an alkali agent, and if it is an organic acid, it must be neutralized and then discharged through biological treatment. When the acidic concentration is high, acidic components must be recovered by evaporation or concentration.

산성 폐수의 처리방법으로는 가성소다(NaOH), 황산알루미늄(Al2(SO4)3), 소석회(Ca(OH)2) 등의 알칼리 중화제를 첨가하는 방법이 있다. 알칼리 중화제를 첨가하는 방법은 산성 폐수에 함유된 중금속을 수산화물 형태로 바꾸어 침전 분리시키는 방법이다. 하지만 이 방법은 알칼리 중화제에 따라 pH 조절범위가 다르고, 중금속마다 제거되는 pH 범위가 다르기 때문에 중화제의 종류에 따라서 일부 중금속의 제거는 처리가 불가능하다. 그리고, 가능하더라도 경제적인 이유로 값이 저렴한 중화제를 사용함으로써 2차적인 환경오염을 유발하는 산업폐기물을 다량 발생시키고 있는 것이 현실이다. As a treatment method of acidic wastewater, there is a method of adding an alkali neutralizing agent such as caustic soda (NaOH), aluminum sulfate (Al 2 (SO 4 ) 3 ), and slaked lime (Ca(OH) 2 ). The method of adding an alkali neutralizing agent is a method of sedimentation by converting heavy metals contained in acidic wastewater into hydroxide forms. However, in this method, since the pH control range is different depending on the alkali neutralizing agent and the pH range removed for each heavy metal is different, it is impossible to remove some heavy metals depending on the kind of neutralizing agent. And, even if possible, it is a reality that a large amount of industrial waste that causes secondary environmental pollution is generated by using inexpensive neutralizing agents for economic reasons.

예를 들어, 폐수의 산성이 pH 3 이하로 강하고 대용량인 경우에 중화제로 pH 14까지 중화할 수 있는 가성소다를 사용하는 것이 중금속을 수산화물로 바꾸어 침 전 분리하는데 가장 바람직하다. 하지만 가성소다의 가격이 다른 알칼리 중화제에 비해 고가이고 가성소다 함량이 5%를 초과할 경우 화학물질 관리법상 유독물로 분류되어 관련업체의 부담 및 관리가 어려우므로 실제 산업현장에 적용하는데 어려움이 있다고 할 수 있다. 따라서 석회석이나 생석회 또는 소석회를 사용하여 산성 폐수를 중화하는 것이 일반적이다. 그러나, 이 경우 중화 후 발생되는 폐기물, 즉 슬러지가 다량 발생함으로 인하여 2차적인 환경오염을 유발하는 문제가 있다. For example, when the acidity of wastewater is strong below pH 3 and has a large volume, it is most preferable to use caustic soda that can neutralize up to pH 14 as a neutralizing agent for sedimentation by converting heavy metals into hydroxides. However, if the price of caustic soda is expensive compared to other alkali neutralizers and the caustic soda content exceeds 5%, it is classified as toxic under the Chemical Substances Management Act, making it difficult for related companies to manage and apply it to actual industrial sites. I can. Therefore, it is common to use limestone, quicklime or slaked lime to neutralize acidic wastewater. However, in this case, there is a problem of causing secondary environmental pollution due to the generation of a large amount of waste generated after neutralization, that is, sludge.

최근에 화학물질관리법 규제 강화로 유해 화학물질의 보관시설, 사용시설, 사용자 등 관련업체의 부담 및 관리가 어려워지고 있다. 특히 매립장 폐기물은 수용한계에 따른 매립비용이 급상승되고 있다. 따라서 종래에 사용되는 알칼리제의 성능 및 효과는 유지되면서 비 유해 화학물질로 분류되어 관리 감독이 용이한 중화제 제품을 개발할 필요가 있다.Recently, due to the strengthening of regulations on the Chemical Substances Control Act, the burden and management of related companies such as storage facilities, facilities for use, and users of hazardous chemicals has become difficult. In particular, landfill wastes are rapidly increasing in landfill costs due to acceptance limits. Accordingly, there is a need to develop a neutralizing agent product that is classified as a non-hazardous chemical substance while maintaining the performance and effect of the conventionally used alkali agent and is easy to manage and supervise.

한편, 한국등록특허 제0587667호에는 '유해가스 정화제'에 대해 개시하고 있으며, 한국등록특허 제0562048호에는 '산성 염화구리 폐액으로부터 염기성 탄산구리를 제조하는 방법'에 대해 개시하고 있다. 하지만, 본 발명의 '수산화나트륨, 탄산나트륨 및 칼슘 화합물의 혼합물을 유효성분으로 함유하는 산성 폐수 또는 산성 유해가스 중화용 조성물'에 대해서는 아직까지 개시된 바가 없다.Meanwhile, Korean Patent No. 0587667 discloses a'hazardous gas purifier', and Korean Patent No. 0562048 discloses a'method for producing basic copper carbonate from an acidic copper chloride waste solution'. However, there has not been disclosed a composition for neutralizing acidic wastewater or acidic harmful gas containing a mixture of sodium hydroxide, sodium carbonate and calcium compounds as an active ingredient of the present invention.

본 발명은 상기와 같은 요구에 의해 도출된 것으로서, 본 발명자들은 유독물로 취급되는 수산화나트륨의 양을 5% 이하로 줄이고, 매립폐기물을 많이 발생시키는 수산화칼슘의 양을 5% 이하로 줄이며, 상대적으로 탄산나트륨의 양을 증가시켜 제조한 혼합 알칼리제를 산성 폐수에 처리하였을 때, 기존의 수산화나트륨, 수산화칼슘 각각을 사용하는 것과 유사한 중화 처리 효과를 내면서 유독물이나 매립폐기물 문제를 해결할 수 있다는 것을 확인함으로써, 본 발명을 완성하였다.The present invention was derived from the above requirements, and the present inventors reduce the amount of sodium hydroxide treated as toxic substances to 5% or less, reduce the amount of calcium hydroxide that generates a lot of landfill waste to 5% or less, and relatively sodium carbonate When the mixed alkali agent prepared by increasing the amount of is treated in acidic wastewater, it is possible to solve the problem of toxic substances or landfill waste while producing a neutralization treatment effect similar to that of using each of the existing sodium hydroxide and calcium hydroxide. Completed.

상기 과제를 해결하기 위하여, 본 발명은 수산화나트륨, 탄산나트륨 및 칼슘 화합물의 혼합물을 유효성분으로 함유하는 산성 폐수 또는 산성 유해가스 중화용 조성물을 제공한다.In order to solve the above problems, the present invention provides a composition for neutralizing acidic wastewater or acidic harmful gases containing a mixture of sodium hydroxide, sodium carbonate and calcium compounds as an active ingredient.

또한, 본 발명은 상기 중화용 조성물을 산성 폐수 또는 산성 유해가스에 처리하는 단계를 포함하는 산성 폐수 또는 산성 유해가스의 중화 방법을 제공한다.In addition, the present invention provides a method for neutralizing acidic wastewater or acidic noxious gas comprising the step of treating the neutralization composition with acidic wastewater or acidic noxious gas.

본 발명은 유독물로 취급되는 수산화나트륨 및 매립폐기물을 많이 발생시키는 수산화칼슘의 양을 각각 5% 이하로 줄이고, 탄산나트륨의 양을 증가시켜 제조한 혼합 알칼리제가 기존에 사용되는 수산화나트륨, 칼슘 화합물 각각을 사용하는 것과 유사한 중화 처리 효과가 있다는 것을 확인하였으므로, 비 유해화학물질로 분류되어 관리가 용이할 뿐만 아니라 매립폐기물의 발생량을 감소시키고 가격 경쟁력이 있다. 따라서 산성 폐수 또는 산성 유해가스 처리 관련 산업 분야에 매우 유용하게 활용될 수 있다.In the present invention, a mixed alkali agent prepared by reducing the amount of sodium hydroxide and calcium hydroxide that generates a lot of landfill waste to be less than 5%, respectively, and increasing the amount of sodium carbonate, which are used as toxic substances, is used respectively. Since it has been confirmed that there is a neutralization treatment effect similar to that of the above, it is classified as a non-hazardous chemical substance, so it is easy to manage, and it reduces the amount of landfill waste generated and has price competitiveness. Therefore, it can be very useful in the industrial field related to the treatment of acidic wastewater or acidic harmful gas.

도 1은 10% 염산 중화시 본 발명의 수산화나트륨, 탄산나트륨 및 칼슘 화합물의 혼합물을 포함하는 혼합 알칼리제의 투입량과 수산화나트륨(가성소다) 농도별 투입량을 비교한 결과이다.FIG. 1 is a result of comparing the input amount of a mixed alkali agent including a mixture of sodium hydroxide, sodium carbonate, and calcium compound of the present invention and the input amount by concentration of sodium hydroxide (caustic soda) when neutralized with 10% hydrochloric acid.

본 발명의 목적을 달성하기 위하여, 본 발명은 수산화나트륨, 탄산나트륨 및 칼슘 화합물의 혼합물을 유효성분으로 함유하는 산성 폐수 또는 산성 유해가스 중화용 조성물을 제공한다.In order to achieve the object of the present invention, the present invention provides a composition for neutralizing acidic wastewater or acidic harmful gas containing a mixture of sodium hydroxide, sodium carbonate and calcium compounds as an active ingredient.

상기 산성 폐수는 예를들어 황산법 이산화티타늄 제조공장 폐수, 도금폐수, 전자공업 폐수, 배터리 제조공장 폐수, 제강공장 산세척 폐수, 산제조시 발생하는 산폐액, 금속 제련공장의 연폐산, 아연 폐산 등 pH 2 내지 3의 산도가 높은 폐수를 의미한다.The acidic wastewater is, for example, sulfuric acid method titanium dioxide manufacturing plant wastewater, plating wastewater, electronic industry wastewater, battery manufacturing plant wastewater, steel plant pickling wastewater, acid wastewater generated during acid manufacturing, lead acid from metal smelting plants, zinc wastewater, etc. It refers to wastewater with high acidity of pH 2 to 3.

본 발명의 중화용 조성물은 수산화나트륨, 탄산나트륨 및 칼슘 화합물의 혼합물로, 유독물로 취급되는 수산화나트륨의 양을 5% 이하로 줄이고, 매립폐기물을 많이 발생시키는 수산화칼슘의 양을 5% 이하로 줄이며, 상대적으로 탄산나트륨의 양을 증가시켜 혼합 제조한 것으로, 기존에 사용되는 수산화나트륨 또는 칼슘 화합물 각각을 중화제로 사용하는 것과 유사한 중화 처리 효과를 나타낸다. 따라서 본 발명의 중화용 조성물은 수산화나트륨 단독 사용으로 인해 가격 경쟁력이 떨어지고 화학물질 관리법상 유독물(수산화나트륨 5% 초과)로 분류되어 관련업체의 부담 및 관리가 어려운 문제를 해결할 수 있을 뿐만 아니라 수산화칼슘의 양을 줄여 매립폐기물 발생량을 감소시킬 수 있는 장점이 있다.The neutralizing composition of the present invention is a mixture of sodium hydroxide, sodium carbonate and calcium compounds, reducing the amount of sodium hydroxide treated as toxic substances to 5% or less, reducing the amount of calcium hydroxide that generates a lot of landfill waste to 5% or less, It is mixed and prepared by increasing the amount of sodium carbonate, and exhibits a neutralization treatment effect similar to that of using each of the sodium hydroxide or calcium compounds used as a neutralizing agent. Therefore, the neutralization composition of the present invention is less competitive in price due to the use of sodium hydroxide alone, and is classified as a toxic substance (more than 5% sodium hydroxide) under the Chemical Substance Management Act, so that the burden and management of the related companies can be solved, as well as calcium hydroxide. There is an advantage in that the amount of landfill waste can be reduced by reducing the amount.

본 발명의 산성 폐수 또는 산성 유해가스 중화용 조성물에서, 상기 혼합물은 조성물 전체 중량에 대하여 1~4.9 중량%의 수산화나트륨, 5~15 중량%의 탄산나트륨 및 1~5 중량%의 칼슘 화합물을 포함하는 것일 수 있으나, 이에 제한되지 않는다.In the composition for neutralizing acidic wastewater or acidic harmful gas of the present invention, the mixture comprises 1 to 4.9% by weight of sodium hydroxide, 5 to 15% by weight of sodium carbonate, and 1 to 5% by weight of a calcium compound based on the total weight of the composition. It may be, but is not limited thereto.

또한, 상기 칼슘 화합물은 소석회, 탄산칼슘 및 생석회로 이루어진 군으로부터 선택된 어느 하나일 수 있으며, 바람직하게는 소석회일 수 있으나, 이에 제한되지 않는다.In addition, the calcium compound may be any one selected from the group consisting of slaked lime, calcium carbonate, and quicklime, preferably slaked lime, but is not limited thereto.

또한, 상기 산성 유해가스는 아황산 가스, 염화수소 가스, 염소 가스, 불화수소 가스, 삼염화붕소 가스, 염화알루미늄 가스, 사염화티타늄 가스 및 이산화질소 가스로 이루어진 군으로부터 선택된 하나 이상일 수 있으나, 이에 제한되지 않는다.In addition, the acidic harmful gas may be at least one selected from the group consisting of sulfurous acid gas, hydrogen chloride gas, chlorine gas, hydrogen fluoride gas, boron trichloride gas, aluminum chloride gas, titanium tetrachloride gas, and nitrogen dioxide gas, but is not limited thereto.

또한, 상기 혼합물 이외에 본 발명의 중화용 조성물은 염화칼슘 또는 염화마그네슘을 추가로 포함할 수 있으나, 이에 제한되지 않는다. 상기 염화칼슘 또는 염화마그네슘은 배관 스캐일(scale)을 방지하기 위해 사용되는 것이며, 조성물 전체 중량에 대하여 각각 1 중량% 미만으로 포함되는 것이 바람직하다.In addition, in addition to the mixture, the neutralization composition of the present invention may further include calcium chloride or magnesium chloride, but is not limited thereto. The calcium chloride or magnesium chloride is used to prevent pipe scale, and is preferably contained in an amount of less than 1% by weight, respectively, based on the total weight of the composition.

또한, 본 발명은 상기 중화용 조성물을 산성 폐수 또는 산성 유해가스에 처리하는 단계를 포함하는 산성 폐수 또는 산성 유해가스의 중화 방법을 제공한다. In addition, the present invention provides a method for neutralizing acidic wastewater or acidic noxious gas comprising the step of treating the neutralization composition with acidic wastewater or acidic noxious gas.

이하, 본 발명의 실시예에 의해 상세히 설명한다. 단, 하기 실시예는 본 발명을 예시하는 것일 뿐, 본 발명의 내용이 하기 실시예에 한정되는 것은 아니다.Hereinafter, it will be described in detail by examples of the present invention. However, the following examples are only illustrative of the present invention, and the contents of the present invention are not limited to the following examples.

실시예 1. 본 발명의 혼합 알칼리제의 중화 효과Example 1. Neutralizing effect of the mixed alkali agent of the present invention

본 발명에서는 수산화나트륨(가성소다), 탄산나트륨 및 수산화칼슘(소석회)의 혼합물을 포함하는 혼합 알칼리(표 1)를 제조한 후, 10% 염산(100ml 기준)을 중화시키기 위해 사용되는 수산화나트륨 농도별 투입량과 본 발명의 수산화나트륨, 탄산나트륨 및 수산화칼슘의 혼합물 함유 혼합 알칼리제의 투입량을 비교하였다. 그 결과, 도 1에 개시한 바와 같이 17~18%의 가성소다 단독 처리 농도의 투입량(31.3g)과 본 발명의 혼합 알칼리제의 투입량(31.6g: 이 중 1.5g이 가성소다)에서 중화 효과가 유사한 것을 확인할 수 있었다. 이를 통해 유독물로 취급되는 수산화나트륨의 양을 줄이면서, 중화 효과는 유지되는 혼합 알칼리제로서 유용하게 활용될 수 있을 것으로 사료된다.In the present invention, after preparing a mixed alkali (Table 1) containing a mixture of sodium hydroxide (caustic soda), sodium carbonate and calcium hydroxide (slaked lime), the amount of sodium hydroxide used to neutralize 10% hydrochloric acid (based on 100 ml) by concentration And the amount of the mixed alkali agent containing a mixture of sodium hydroxide, sodium carbonate and calcium hydroxide of the present invention was compared. As a result, as disclosed in Fig. 1, the neutralizing effect was obtained in the amount of the concentration of the caustic soda treatment alone (31.3 g) of 17 to 18% and the amount of the mixed alkali agent of the present invention (31.6 g: 1.5 g of which is caustic soda). I could see something similar. Through this, it is thought that the amount of sodium hydroxide treated as a toxic substance can be reduced, and the neutralizing effect can be effectively utilized as a mixed alkali agent that is maintained.

본 발명의 혼합 알칼리제 조성Composition of mixed alkali agent of the present invention 성분ingredient 중량%weight% 수산화나트륨Sodium hydroxide 33 탄산나트륨Sodium carbonate 77 소석회Slaked lime 2.52.5 염화칼슘 또는 염화마그네슘Calcium chloride or magnesium chloride 0.70.7 물water 86.886.8 총gun 100100

또한, 산성 폐수 1,000ml을 대상으로 본 발명의 1~4.9 중량%의 수산화나트륨, 5~15 중량%의 탄산나트륨 및 1~5 중량%의 수산화칼슘의 혼합물을 포함하는 혼합 알칼리제와 수산화칼슘(소석회 20%) 단독 사용에 따른 중화 효과를 비교하였다. 그 결과, 하기 표 2에 개시한 바와 같이 산성 폐수 1,000ml을 중화시키기 위해 본 발명의 혼합 알칼리제를 사용하였을 때, 오니량은 약 80% 감소하였으며 불소(F) 잔량은 3.9% 증가하였고, 이러한 중화 효과는 수산화칼슘(소석회)을 단독으로 사용하였을 때의 중화 효과와 비슷한 수준임을 확인하였다. 이를 통해 본 발명의 혼합 알칼리제는 매립폐기물의 발생량을 증가시키는 수산화칼슘의 양(20%→1~5%)을 줄이면서, 중화 효과는 종래 중화제와 비슷하에 유지되어 산성 폐수 등의 처리 중화제로서 유용하게 활용될 수 있을 것으로 사료된다.In addition, a mixed alkali agent and calcium hydroxide containing a mixture of 1 to 4.9% by weight of sodium hydroxide, 5 to 15% by weight of sodium carbonate and 1 to 5% by weight of calcium hydroxide of the present invention for 1,000 ml of acidic wastewater (slaked lime 20%) The neutralization effect according to the use alone was compared. As a result, as disclosed in Table 2 below, when the mixed alkaline agent of the present invention was used to neutralize 1,000 ml of acidic wastewater, the amount of sludge was reduced by about 80% and the remaining amount of fluorine (F) was 3.9%. It was confirmed that the neutralization effect was similar to the neutralization effect when calcium hydroxide (slaked lime) was used alone. Through this, the mixed alkali agent of the present invention reduces the amount of calcium hydroxide (20%→1-5%) that increases the amount of landfill waste, while the neutralization effect is maintained similar to the conventional neutralizing agent, making it useful as a neutralizing agent for treatment of acid wastewater, etc. It is thought that it can be utilized.

산성 폐수 중화시 혼합 알칼리제의 중화 효과Neutralizing effect of mixed alkali agents when neutralizing acidic wastewater 　 Test 1Test 1 Test 2Test 2 Test 3Test 3 비고(기기, 비교)Remarks (equipment, comparison) 소석회(20%) Slaked lime (20%) 투입량input 10.6710.67 11.211.2 11.0311.03 　 오니량Sludge 13.7213.72 14.414.4 14.114.1 KETT-FD610KETT-FD610 F 잔량F balance 2525 2828 3030 HACH DR1900HACH DR1900 혼합 알칼리제Mixed alkali 투입량input 14.114.1 14.314.3 14.214.2 　 오니량Sludge 2.722.72 2.812.81 2.672.67 KETT-FD610KETT-FD610 F 잔량F balance 2727 2929 3030 HACH DR1900HACH DR1900 원수 산도(pH)Raw water acidity (pH) 2.562.56 2.562.56 2.552.55 Mettler Toledo S220Mettler Toledo S220 중화후 산도(pH)Acidity after neutralization (pH) 7.67.6 7.47.4 7.87.8 Mettler Toledo S220Mettler Toledo S220 교반시간(min)Stirring time (min) 3030 3030 3030 　 원수 F(불소)함유량(ppm)Raw water F (fluorine) content (ppm) 320320 310310 312312 HACH DR1900HACH DR1900 오니량 비교Comparison of sludge amount 19.8%19.8% 19.5%19.5% 18.9%18.9% 80.6% 감소80.6% reduction F 잔량 비교F balance comparison 108.0%108.0% 103.6%103.6% 100.0%100.0% 3.9% 증가3.9% increase

Claims (6)

수산화나트륨, 탄산나트륨 및 칼슘 화합물의 혼합물을 유효성분으로 함유하는 산성 폐수 또는 산성 유해가스 중화용 조성물.A composition for neutralizing acidic wastewater or acidic harmful gases containing a mixture of sodium hydroxide, sodium carbonate and calcium compounds as active ingredients. 제1항에 있어서, 상기 혼합물은 조성물 전체 중량에 대하여 1~4.9 중량%의 수산화나트륨, 5~15 중량%의 탄산나트륨 및 1~5 중량%의 칼슘 화합물을 포함하는 것을 특징으로 하는 산성 폐수 또는 산성 유해가스 중화용 조성물.The acidic wastewater or acidic wastewater of claim 1, wherein the mixture comprises 1 to 4.9% by weight of sodium hydroxide, 5 to 15% by weight of sodium carbonate, and 1 to 5% by weight of a calcium compound based on the total weight of the composition. Composition for neutralizing harmful gases. 제1항에 있어서, 상기 칼슘 화합물은 소석회, 탄산칼슘 및 생석회로 이루어진 군으로부터 선택된 어느 하나인 것을 특징으로 하는 산성 폐수 또는 산성 유해가스 중화용 조성물.The composition for neutralizing acidic wastewater or acid harmful gas according to claim 1, wherein the calcium compound is any one selected from the group consisting of slaked lime, calcium carbonate, and quicklime. 제1항에 있어서, 상기 산성 유해가스는 아황산 가스, 염화수소 가스, 염소 가스, 불화수소 가스, 삼염화붕소 가스, 염화알루미늄 가스, 사염화티타늄 가스 및 이산화질소 가스로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 산성 폐수 또는 산성 유해가스 중화용 조성물.The acidic harmful gas of claim 1, wherein the acidic harmful gas is at least one selected from the group consisting of sulfurous acid gas, hydrogen chloride gas, chlorine gas, hydrogen fluoride gas, boron trichloride gas, aluminum chloride gas, titanium tetrachloride gas, and nitrogen dioxide gas. Composition for neutralizing wastewater or acidic harmful gases 제1항에 있어서, 상기 혼합물 이외에 염화칼슘 또는 염화마그네슘을 추가로 포함하는 것을 특징으로 하는 산성 폐수 또는 산성 유해가스 중화용 조성물.The composition for neutralizing acidic wastewater or acidic harmful gases according to claim 1, further comprising calcium chloride or magnesium chloride in addition to the mixture. 제1항 내지 제5항 중 어느 한 항의 중화용 조성물을 산성 폐수 또는 산성 유해가스에 처리하는 단계를 포함하는 산성 폐수 또는 산성 유해가스의 중화 방법.A method for neutralizing acidic wastewater or acidic noxious gas comprising the step of treating the neutralization composition of claim 1 in acidic wastewater or acidic noxious gas.
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WO2002010075A1 (en) * 2000-07-31 2002-02-07 Euroiset Italia S.R.L. Composition for the neutralisation of inorganic and organic strong acids

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WO2002010075A1 (en) * 2000-07-31 2002-02-07 Euroiset Italia S.R.L. Composition for the neutralisation of inorganic and organic strong acids

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KR20220078138A (en) * 2020-12-03 2022-06-10 주식회사 범우 pH-ADJUSTING COMPOSITION FOR TREATING WASTE WATER AND METHOD FOR TREATING WASTE WATER USING THEREOF

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