KR101268376B1 - Composition for coagulant - Google Patents
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- KR101268376B1 KR101268376B1 KR1020120148428A KR20120148428A KR101268376B1 KR 101268376 B1 KR101268376 B1 KR 101268376B1 KR 1020120148428 A KR1020120148428 A KR 1020120148428A KR 20120148428 A KR20120148428 A KR 20120148428A KR 101268376 B1 KR101268376 B1 KR 101268376B1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- 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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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Abstract
Description
본 발명은 천연무기질 성분들을 주성분으로 하고 있어 사용상의 안전성을 확보함과 동시에 응집기능성이 강화되며, 또한 천연의 재료들을 사용하여 응집제를 구성하기 때문에 친환경적이어서 응집제에 의한 제2의 오염발생문제를 해소할 수 있는 환경친화형 응집제에 관한 것이다.
The present invention is made of natural inorganic components as a main component to ensure the safety of use and at the same time to enhance the cohesive function, and also because it is composed of a coagulant using natural materials to solve the problem of the second pollution caused by the coagulant The present invention relates to an environmentally friendly flocculant.
본 발명은 응집제에 관한 것으로서, 응집제와 관련하여 대한민국 등록특허 10-0737375(등록일자 2007년07월03일) '무기전해 응집제 및 이 무기전해 응집제를 사용한 이토개질방법'; 대한민국 등록특허 10-0035899(등록일자 1990년08월23일) '무기응집제 및 그의 제조법'; 대한민국 공개특허특1997-0010649(공개일자 1997년03월27일) '용수와 폐수 정수처리용 무기고분자 응집제 제조방법'; 대한민국 등록특허 10-0347652(등록일자 2002년07월24일) '복합무기응집제를 이용한 폐수처리 방법'; 대한민국 등록특허 10-0397606(등록일자 2003년08월28일) '무기응집제와 생물막 여과조를 이용한 수처리 방법 및 장치'; 대한민국 등록특허 10-1128864(등록일자 2012년03월14일) '수 처리용 무기응집제 및 이의 제조방법'에 대한 기술이 개시된 바 있다.
The present invention relates to a flocculant, and relates to a flocculant, the Republic of Korea Patent Registration 10-0737375 (Registration Date July 03, 2007) 'an inorganic electrolytic coagulant and a method for reforming soil using the inorganic electrolytic coagulant'; Republic of Korea Patent Registration 10-0035899 (Registration date August 23, 1990) 'Inorganic coagulant and its preparation method'; Republic of Korea Patent Publication No. 1997-0010649 (published March 27, 1997) 'Method for preparing inorganic polymer flocculant for water and wastewater purification treatment'; Republic of Korea Patent Registration 10-0347652 (Registration date July 24, 2002) 'Waste water treatment method using a complex inorganic coagulant'; Republic of Korea Patent Registration 10-0397606 (Date of Registration August 28, 2003) 'Water treatment method and apparatus using an inorganic coagulant and biofilm filtration tank'; Republic of Korea Patent Registration No. 10-1128864 (Registration date March 14, 2012) has been disclosed a technology for 'inorganic coagulant for water treatment and its manufacturing method'.
본 발명은 천연무기질계 성분들을 주성분으로 사용하여 제품의 안전성을 높여 취급이 용이하고 환경에 부담을 주지 않으면서 응집속도를 높일 수 있기 때문에 다양한 형태의 폐수에 적용할 수 있는 친환경 응집제를 제공하고자 하는 것을 발명의 목적으로 한다.
The present invention is to provide an eco-friendly coagulant that can be applied to various types of wastewater because it is easy to handle and increase the coagulation rate without burdening the environment by using the natural inorganic components as a main component to increase the safety of the product It is an object of the invention.
상기의 목적을 달성하기 위하여,In order to achieve the above object,
본 발명은 산화나트륨(Na2O) 10~20wt%와, 산화칼륨(K2O) 20~50wt%와, 산화알루미늄(Al2O3) 10~30wt%와, 이산화규소(SiO2) 20~50wt%와, 산화철(Fe2O3) 1~10wt%을 혼합하여 100wt%로 조성된 천연무기조성물(A)의 70~85wt%;와,The present invention is 10 to 20wt% of sodium oxide (Na 2 O), 20 to 50wt% of potassium oxide (K 2 O), 10 to 30wt% of aluminum oxide (Al 2 O 3 ), silicon dioxide (SiO 2 ) 20 70 to 85 wt% of the natural inorganic composition (A) composed of ~ 50 wt% and 1 to 10 wt% of iron oxide (Fe 2 O 3 ) by mixing;
폐굴껍질 분말(B) 5~20wt%;와,Waste oyster shell powder (B) 5 ~ 20wt%;
키토산(C) 5~20wt%;와,Chitosan (C) 5-20 wt%;
황토(D) 5~20wt%;를 혼합(A+B+C+D)하여 100wt%로 조성된 친환경 응집제를 주요 기술 구성으로 한다.
Ocher (D) 5 ~ 20wt%; mixed (A + B + C + D) is an environmentally friendly coagulant composed of 100wt% as the main technical configuration.
본 발명에 따른 친환경 응집제는 다음의 효과를 갖는다.
Eco-friendly coagulant according to the present invention has the following effects.
첫째. 천연무기질계로 구성되어 안전성이 높고 취급이 용이하므로 환경에 부담을 주지 않는다.first. It is composed of natural inorganic materials, so it is safe and easy to handle, so it does not burden the environment.
둘째. 응집반응이 빠르며 침강속도도 빠르기 때문에 처리설비의 소형화, 좁은 면적에서의 대응이 가능하다.second. Because of the fast flocculation reaction and the fast settling speed, it is possible to reduce the size of treatment equipment and cope with small area.
셋째. 처리된 슬러지는 점성이 낮고 탈수가 용이하므로 후처리 공정의 간소화가 가능하다.third. Treated sludge is low in viscosity and easy to dehydrate, thus simplifying the post-treatment process.
넷째. 주원료가 천연재료이므로 제품의 안정적인 공급과 안정된 품질 및 수질정화의 총비용(Total Cost)의 저감이 가능하다.fourth. Since the main raw material is a natural material, it is possible to reduce the total cost of stable supply of products, stable quality and water quality.
다섯째. 압도적인 응집능력과 속도를 갖는다.
fifth. Overwhelming cohesion and speed
도 1은 본 발명에 따른 친환경 응집제를 이용한 응집처리과정을 보인 사진.1 is a photograph showing a coagulation treatment process using an environmentally friendly coagulant according to the present invention.
이하, 상기의 기술 구성에 대한 구체적인 내용을 살펴보고자 한다.
Hereinafter, a detailed description of the above technical configuration will be made.
상기한 바와 같이,As described above,
본 발명에 따른 친환경 응집제는 산화나트륨(Na2O) 10~20wt%와, 산화칼륨(K2O) 20~50wt%와, 산화알루미늄(Al2O3) 10~30wt%와, 이산화규소(SiO2) 20~50wt%와, 산화철(Fe2O3) 1~10wt%의 혼합으로 조성된 천연무기조성물(A) 70~85wt%;와,Eco-friendly flocculant according to the present invention 10 to 20wt% sodium oxide (Na 2 O), 20 to 50wt% potassium oxide (K 2 O), 10 to 30wt% aluminum oxide (Al 2 O 3 ), and silicon dioxide ( 70 to 85 wt% of a natural inorganic composition (A) composed of a mixture of SiO 2 ) 20 to 50 wt% and iron oxide (Fe 2 O 3 ) 1 to 10 wt%;
폐굴껍질 분말(B) 5~20wt%;와,Waste oyster shell powder (B) 5 ~ 20wt%;
키토산(C) 5~20wt%;와,Chitosan (C) 5-20 wt%;
황토(D) 5~20wt%;의 혼합(A+B+C+D)으로 조성된다.
Ocher (D) 5 ~ 20wt%; It is composed of a mixture (A + B + C + D).
상기 산화나트륨(Na2O)은 나트륨의 산화물로서, 금속 나트륨을 180℃ 이하에서 산소와 접촉시켜 만든 흰색의 가루이다. 물과 반응하면 많은 열을 내면서 수산화나트륨이 되는 것으로서 탈수제 등으로 사용된다.The sodium oxide (Na 2 O) is an oxide of sodium, which is a white powder made by contacting metallic sodium with oxygen at 180 ° C. or lower. When reacted with water, it becomes sodium hydroxide while producing a lot of heat. It is used as a dehydrating agent.
상기 산화나트륨(Na2O)의 사용량이 10wt% 미만이거나 20wt%를 초과하는 경우에는 응집력이 불충분하여 신속한 경화처리가 곤란하다는 문제가 있기 때문에, 상기 산화나트륨(Na2O)의 사용량은 천연무기조성물의 전체 중량에 대해 10~20wt%의 범위 내로 한정하는 것이 바람직하다.
If the amount of the sodium oxide (Na 2 O) is less than 10wt% or more than 20wt%, there is a problem that the fast curing treatment is insufficient because of the cohesive force is insufficient, the amount of the sodium oxide (Na 2 O) is a natural inorganic It is preferable to limit the amount to 10 to 20wt% with respect to the total weight of the composition.
상기 산화칼륨(K2O)은 칼륨을 질산칼륨과 진공 속에서 가열하거나(2KNO3 + 10K → 6K2O + N2), 적은 양인 공기와 칼륨을 반응시켜 진공 속에서 가열한 후에 칼륨을 제거하고 얻어지는 무색 결정이다.The potassium oxide (K 2 O) is a potassium potassium nitrate and heated in a vacuum (2KNO 3 + 10K → 6K 2 O + N 2 ), or a small amount of air and potassium reacts to remove the potassium after heating in a vacuum It is a colorless crystal obtained.
역형석 구조이며, 격장상수 α=6.45Å, 결합길이 K-O는 2.79Å. 비중 2.32, 분자량 94.20으로 백색 분말이며 흡습성을 갖는다. 또한 물과는 심하게 반응하면 수산화칼륨으로 변하게 된다.Inverse fluorite structure, with a constant constant α = 6.45Å and bond length K-O of 2.79Å. It is a white powder with a specific gravity of 2.32 and a molecular weight of 94.20 and has hygroscopicity. In addition, when severely reacted with water, it turns into potassium hydroxide.
이와 같은 산화칼륨(K2O)은 본 발명의 친환경 응집제에 사용되어 응집력을 향상시키는 기능을 갖는 것으로서, 그 사용량이 20wt% 미만이거나 50wt%를 초과하는 경우에는 응집력이 불충분하여 신속한 경화처리가 곤란하다는 문제가 있기 때문에, 상기 산화칼륨(K2O)의 사용량은 천연무기조성물의 전체 중량에 대해 20~50wt%의 범위 내로 한정하는 것이 바람직하다.
Such potassium oxide (K 2 O) is used in the environment-friendly coagulant of the present invention has a function to improve the cohesive force, when the amount is less than 20wt% or more than 50wt%, cohesive force is insufficient, it is difficult to rapid curing treatment Since there is a problem, the amount of potassium oxide (K 2 O) is preferably limited to the range of 20 to 50wt% based on the total weight of the natural inorganic composition.
상기 산화알루미늄(Al2O3)은 알루미늄이 공기 중에 노출될 경우 산소와 반응하여 만들어지는 물질로서, 일반적으로 산화알루미늄을 알루미나(alumina)라고 부르기도 한다. 결정체 또는 분말의 물리적 상태를 유지하는 것으로서, 무취이며, 분자량: 101.96, 비중(물=1) 3.965(at 5℃)을 갖는다.The aluminum oxide (Al 2 O 3 ) is a material made by reacting with oxygen when aluminum is exposed to air, and is commonly referred to as aluminum oxide (alumina). It is odorless and has a molecular weight of 101.96 and a specific gravity (water = 1) of 3.965 (at 5 ° C.) as the physical state of crystals or powders is maintained.
이와 같은 산화알루미늄(Al2O3)은 본 발명의 친환경 응집제에 사용되어 응집력을 향상시키는 기능을 갖는 것으로서, 그 사용량이 10wt% 미만이거나 또는 30wt%를 초과하게 되는 경우에는 응집력이 불충분하여 신속한 경화처리가 곤란하다는 문제가 있기 때문에, 상기 산화알루미늄(Al2O3)의 사용량은 천연무기조성물의 전체 중량에 대해 10~30wt%의 범위 내로 한정하는 것이 바람직하다.
Such aluminum oxide (Al 2 O 3 ) is used in the environment-friendly coagulant of the present invention has a function to improve the cohesion, when the amount is less than 10wt% or more than 30wt% cohesive force is insufficient and rapid curing because there is a problem that processing becomes difficult, the amount of the aluminum oxide (Al 2 O 3) is preferably limited within the range of 10 ~ 30wt% to the total weight of natural inorganic composition.
상기 이산화규소는 주성분인 SiO2의 함량이 높은 석영사를 총칭하는 것으로서, KS에서는 SiO2 함량이 70wt% 이상이고, 점토분이 2wt% 미만인 것을 규사로 칭한다. 이산화규소의 일반적인 물리적 성질은 모아경도 7, 비중 2.65~2.66, 용융온도(℃) 1,713이다.The silicon dioxide is a generic term for quartz yarns having a high content of SiO 2 as a main component, and in KS, silica 2 content is 70 wt% or more and clay powder is less than 2 wt%. The general physical properties of silicon dioxide are assembling hardness 7, specific gravity 2.65 ~ 2.66, melting temperature (℃) 1,713.
이산화규소는 입도에 따라 그 용도를 달리하며, 5~8mesh의 경우, 주강사(back sand), 정수장 여과사; 8~12mesh의 경우, 미끄럼방지용 등 건자재용, 센딩사; 12~18mesh의 경우, 정수장 여과사, 칼라하드너 등 건자재용, 센딩사; 20~40mehs의 경우, 주강사, 골프장 벙커사, 농약사, 정수장 여과사 타일, 몰탈시멘트, 칼라하드너, 전통벽돌; 40~70mesh의 경우, 주강사, 타일, 몰탈시멘트 등 건자재용; 70~200mesh의 경우, 주강사, 타일, 몰탈시멘트, 방수용몰탈 건자재용; 100~200mesh의 경우, 주강사, 코티센드용; 200mesh 통과량이 75~90% 이상 통과하는 하는 경우에는 황토방, 황토몰탈, 고강도파일, 경량기포콘크리트, 단열보온제, 콘크리트, 모르타르에 적용하여 그 사용처를 달리한다.Silicon dioxide varies its use depending on the particle size, in the case of 5 ~ 8 mesh, main sand (back sand), water purification plant filter sand; In case of 8 ~ 12mesh, for construction materials such as non-slip, sending yarn; In the case of 12-18 mesh, for construction materials, such as water purification filtration yarn, color hardener, and sending yarn; For 20 ~ 40 mehs, main instructor, golf course bunker, pesticide, water purification filter tile, mortar cement, color hardner, traditional brick; 40 ~ 70mesh, for building materials such as cast steel, tile, mortar cement; 70 ~ 200mesh, for cast steel, tiles, mortar cement, waterproof mortar building materials; For 100 ~ 200mesh, for main instructor and cortisend; When passing through 200mesh more than 75 ~ 90%, apply it to ocher room, ocher mortar, high strength pile, lightweight foam concrete, insulation insulation, concrete, mortar, and use it differently.
상기 이산화규소는 본 발명의 친환경 응집제에 사용되어 응집력을 향상시키는 기능을 갖는 것으로서, 그 사용량이 20wt% 미만이거나 또는 50wt%를 초과하게 되는 경우에는 응집력이 불충분하여 신속한 경화처리가 곤란하다는 문제가 있기 때문에, 상기 이산화규소(SiO2)의 사용량은 천연무기조성물의 전체 중량에 대해 20~50wt%의 범위 내로 한정하는 것이 바람직하다.
The silicon dioxide is used in the environment-friendly coagulant of the present invention has a function to improve the cohesion, when the amount is less than 20wt% or more than 50wt% there is a problem that the fast curing treatment is difficult due to insufficient cohesion. Therefore, the amount of the silicon dioxide (SiO 2 ) is preferably limited to the range of 20 to 50wt% based on the total weight of the natural inorganic composition.
상기 산화철(Fe2O3)에는 천연적으로 철광석 형태로 존재하는 Fe2O3(Hematite)와, Fe3O4(Magnetite)가 있고 환원 과정에서 나타나는 FeO(Wustite)가 있다.The iron oxide (Fe 2 O 3 ) is Fe 2 O 3 (Hematite) and Fe 3 O 4 (Magnetite) that is naturally present in the form of iron ore and FeO (Wustite) appearing in the reduction process.
이중 상기 Fe2O3(Hematite)는 대략 70% 철과 30% 산소가 있으며, 색깔은 붉은색부터 검은색, 강회색 등 다양하다. 비중은 4.9~5.3이며 철의 가장 높은 산화상태이다. Hematite는 Corundum(강옥) 형태의 rhombohderal system으로 결정화되어 있고, unit cell은 Close-packed oxygen 격자에 배열된 18개의 산소와 octahedral자리의 2/3 지점에 차지하고 있는 12개의 ferrous이온을 함유하고 있다.The Fe 2 O 3 (Hematite) is approximately 70% iron and 30% oxygen, the color varies from red to black, strong gray and the like. Specific gravity is 4.9 ~ 5.3 and is the highest oxidation state of iron. Hematite is crystallized in a corundum rhombohderal system. The unit cell contains 18 oxygens arranged in a closed-packed oxygen lattice and 12 ferrous ions occupying 2/3 of the octahedral site.
이와 같은 산화철(Fe2O3)은 본 발명의 친환경 토양경화제에 사용되어 응집력을 향상시키는 기능을 갖는 것으로서, 그 사용량이 1wt% 미만이거나 또는 10wt%를 초과하게 되는 경우에는 응집력이 불충분하여 신속한 경화처리가 곤란하다는 문제가 있기 때문에, 상기 산화철(Fe2O3)의 사용량은 천연무기조성물의 전체 중량에 대해 1~10wt%의 범위 내로 한정하는 것이 바람직하다.
Such iron oxide (Fe 2 O 3 ) is used in the environment-friendly soil hardener of the present invention has a function to improve the cohesion, when the amount of use is less than 1wt% or more than 10wt% insufficient cohesive force is rapid curing because there is a problem that processing becomes difficult, the amount of the iron oxide (Fe 2 O 3) is preferably limited within the range of 1 ~ 10wt% for the total weight of natural inorganic composition.
이상의 산화나트륨(Na2O)과, 산화칼륨(K2O)과, 산화알루미늄(Al2O3)과, 이산화규소(SiO2)와, 산화철(Fe2O3)의 혼합으로 천연무기조성물을 조성하게 되며, 상기 천연무기조성물의 조성예는 다음의 실시예 1과 같다.
Natural inorganic composition by mixing sodium oxide (Na 2 O), potassium oxide (K 2 O), aluminum oxide (Al 2 O 3 ), silicon dioxide (SiO 2 ) and iron oxide (Fe 2 O 3 ). The composition of the natural inorganic composition is the same as in Example 1 below.
상기 천연무기조성물의 구체적인 조성예는 산화나트륨(Na2O) 15㎏와, 산화칼륨(K2O) 30㎏와, 산화알루미늄(Al2O3) 20㎏와, 이산화규소(SiO2) 25㎏와, 산화철(Fe2O3) 10㎏을 혼합하는 것이다.
Specific composition examples of the natural inorganic composition include 15 kg of sodium oxide (Na 2 O), 30 kg of potassium oxide (K 2 O), 20 kg of aluminum oxide (Al 2 O 3 ), and silicon dioxide (SiO 2 ) 25 Kg and 10 kg of iron oxide (Fe 2 O 3 ) are mixed.
다음으로 친환경 응집제를 구성하는 폐굴껍질 분말, 키토산, 황토에 대해 순차적으로 살펴보고자 한다.
Next, the oyster shell powder, chitosan, and loess that make up the eco-friendly flocculant are sequentially examined.
폐굴껍질은 수거된 폐굴껍질을 세척하여 염분 및 유기 이물질을 제거한 다음 24~40시간 동안 자연건조하고, 자연건조된 폐굴껍질을 볼밀(Ball Mill)로 분쇄한 후 200메쉬 체(sieve)로 선별하여 통과한 것을 드라이 오븐(dry oven)에서 105℃를 유지하면서 24시간 증발 건조한 다음 굴껍질이 흡습하지 않도록 데시케이터 속에 보관하면서 사용한다.The waste oyster shell is washed with the collected waste oyster shell to remove salts and organic foreign matters, and then dried for 24 to 40 hours. The dried oyster shell is crushed with a ball mill and then screened with a 200 mesh sieve. What passed is evaporated to dry for 24 hours while maintaining 105 ° C. in a dry oven, and then used while being kept in a desiccator so that the oyster shell is not hygroscopic.
굴 껍질은 비표면적이 크고 응집을 촉진시킬 수 있는 Ca2+을 비롯한 알칼리 금속이온을 다량 함유하고 있어 정수처리과정에서 응집을 촉진한다. 또한 굴껍질은 다공성이며 투과성이 뛰어나 슬러지의 압축에 의한 폐쇄현상을 방지하므로 폐굴껍질을 정수처리과정에서 응집보조제로 이용할 경우 재활용 측면뿐만 아니라 환경에 대한 위해성을 감소시킬 수 있다.Oyster shells have a large specific surface area and contain a large amount of alkali metal ions, including Ca 2+, which can promote aggregation. In addition, the oyster shell is porous and excellent in permeability to prevent closure due to the compression of sludge, so when used as a coagulant in the water purification process, waste oyster shell can reduce the environmental risk as well as the recycling aspect.
상기 폐굴껍질 분말의 사용량이 5wt% 미만이거나 또는 20wt%를 초과하게 되는 경우에는 본 발명에 따른 응집제의 응집효과의 상승을 기대하기 어렵기 때문에 상기 폐굴껍질 분말의 사용량은 본 발명에 따른 친환경 응집제의 전체 중량에 대해 5~20wt%의 범위 내로 한정하는 것이 바람직하다.
When the amount of the waste oyster shell powder is less than 5wt% or exceeds 20wt%, it is difficult to expect an increase in the flocculation effect of the flocculant according to the present invention. It is preferable to limit in the range of 5-20 wt% with respect to the total weight.
다음으로 상기 키토산은 단백질의 부패로 인한 심각한 환경공해를 일으키는 폐기물인 게, 새우, 가재 등의 갑각류의 껍질을 이용하여 제조된 것을 사용한다.Next, the chitosan is a waste that causes severe environmental pollution due to protein decay, and is prepared using shells of shellfish such as crabs, shrimps, and crayfish.
이와 같이 게, 새우, 가재 등의 껍질을 이용하여 응집제를 제조하게 되면 폐기물처리와 함께 제조원가의 절감효과를 누릴 수 있다.As such, when the flocculant is manufactured by using shells of crabs, shrimp, and crayfish, it is possible to reduce the manufacturing cost along with waste treatment.
본 발명에서 사용하는 키토산은 자연분해기능성과 응집기능성을 향상시킨 키토산으로서, 그 제조과정은 다음과 같다.Chitosan used in the present invention is a chitosan with improved natural decomposition and cohesive functionality, the production process is as follows.
키토산은 게, 새우, 가재의 갑각류 껍질을 세척한 후 5wt%-HCl 용액에서 침적반응시켜 탄산칼슘을 제거하되, 상기 5wt%-HCl 용액 중에 CO2 gas가 생성되지 않을 때까지 반응시키는 과정과, Chitosan is washed with shells of crab, shrimp and crayfish, and then immersed in 5wt% -HCl solution to remove calcium carbonate, but reacting until no CO 2 gas is generated in the 5wt% -HCl solution;
상기 탄산칼슘이 제거된 키틴물질을 10배 중량의 90wt% 농도의 포름산에 넣고 실온에서 15~20시간 동안 교반하는 과정과,Putting the chitin material from which the calcium carbonate was removed into a formic acid at a concentration of 90 wt% of 10 times the weight and stirring at room temperature for 15 to 20 hours;
상기 교반과정을 거친 물질을 증류수로 세척하여 중성상태로 한 후 10wt%-NaOH용액에 넣고 2~3시간 동안 중탕한 후 세척, 건조과정을 거쳐 키틴을 제조하고,The material after the stirring process was washed with distilled water to a neutral state, put in 10wt% -NaOH solution, and then heated for 2 to 3 hours to prepare chitin by washing and drying.
상기 키틴을 50wt%(W/V)-NaOH 용액을 사용하여 100±5℃에서 1시간 ~ 2시간 동안 알칼리처리를 하여 탈아세틸화 처리하여 탈아세틸화도 80~94%, 점도평균분자량이 4.2×105 ~ 8.6×105인 키토산이다.The chitin was deacetylated by an alkali treatment at 100 ± 5 ° C. for 1 hour to 2 hours using a 50 wt% (W / V) -NaOH solution to obtain a deacetylation degree of 80 to 94% and a viscosity average molecular weight of 4.2 ×. 10 5 ~ 8.6 × 10 5 is a chitosan.
상기 키토산의 사용량이 5wt% 미만인거나 20wt%를 초과하게 되는 경우에는 응집기능성의 향상을 기대하기 어렵기 때문에 상기 키토산의 사용량은 본 발명에 따른 친환경 응집제의 전체 중량에 대해 5~20wt%의 범위 내로 한정하는 것이 바람직하다.
When the amount of the chitosan is less than 5wt% or exceeds 20wt%, it is difficult to expect the improvement of the cohesiveness, so the amount of the chitosan is used in the range of 5 to 20wt% with respect to the total weight of the eco-friendly coagulant according to the present invention. It is preferable to limit.
상기 황토는 광물조성을 살펴보면 60~70%의 석영을 함유하며 그 함량은 최저 40%에서 최고 80%까지 변화한다. 장석과 운모는 10~20%, 탄산염광물은 5~35%를 차지하고 있다. 나머지 약 2~5%는 각섬석, 인회석, 흑운모, 녹니석, 남정석, 석류석, 해록석, 휘석, 금홍석, 규선석, 전기석, 지르콘 등과 같은 광물들로 구성되어 있으며 입자들은 전형적으로 미약하게 풍화되어 있다. 세립질(0.002mm 이하)의 입자크기에서는 몬모릴로나이트, 일라이트, 카올리나이트 등과 같은 점토광물들이 대부분을 차지한다.The loess contains 60-70% quartz in the mineral composition and its content varies from as low as 40% to as high as 80%. Feldspar and mica account for 10-20% and carbonate minerals 5-35%. About 2-5% of the remainder consists of minerals such as hornblende, apatite, biotite, chlorite, cyanite, garnet, halo, fluorite, rutile, quartzite, tourmaline and zircon, and the particles are typically mildly weathered. In the fine grain size (less than 0.002mm), clay minerals such as montmorillonite, illite, kaolinite, etc., account for the most part.
상기 황토는 천연의 황토를 그대로 사용할 수도 있으나, 소성과정을 거침으로써 카올린 광물이 가열, 탈수되어 메타-카올린 상태로 변화하는 동시에 강한 반응성을 나타내게 된다. 이때 황토는 500~950℃에서 1시간~1시간30분 동안 소성함으로써 하소황토가 제조되며, 상기 하소황토에 석회를 첨가하게 되면 최종수화물상인 afwilite(3CaO·SiO2·3H2O)를 생성하게 된다.The loess may use natural loess as it is, but the kaolin mineral is heated and dehydrated through the calcining process to change to meta-kaolin state and exhibit strong reactivity. The ocher is calcined ocher by calcining at 500 ~ 950 ℃ for 1 hour to 1 hour 30 minutes, when lime is added to the calcined ocher to produce afwilite (3CaO · SiO 2 · 3H 2 O) which is the final hydrate. do.
이때, 상기 황토의 소성온도가 950℃를 초과하게 되면 포졸란성이 상실되게 되므로, 상기 황토의 소성온도는 500~950℃의 범위 내로 한정하는 것이 바람직하다.At this time, if the firing temperature of the loess is more than 950 ℃ pozzolanicity is lost, the baking temperature of the loess is preferably limited to within the range of 500 ~ 950 ℃.
상기 포졸란은 그 자체로는 경화하는 성질을 지니지 않으나 H2O의 존재로 클링커 성분이 수화할 때 다량 생성하는 Ca(OH)2와 서서히 화합해서 불용성의 수경성을 지닌 화합물을 생성하는 물질로 실리카 성분을 주성분으로 하는 것이다. 이때 H2O의 존재로 Ca(OH)2와 화합해서 경화하여 강도를 증진하는 작용을 포졸란 반응(pozzolanic reaction)이라고 한다. The pozzolanic is not a hardening property by itself, but is a substance that forms a compound having insoluble hydraulic properties by slowly combining with Ca (OH) 2 , which is produced in large amounts when the clinker component is hydrated in the presence of H 2 O. It is based on the main component. In this case, the action of increasing strength by combining with Ca (OH) 2 and curing with the presence of H 2 O is called a pozzolanic reaction.
상기 황토의 사용량이 5wt% 미만이거나 20wt%를 초과하게 되는 경우에는 응집기능성의 향상을 기대하기 어렵기 때문에 상기 황토의 사용량은 본 발명에 따른 친환경 응집제의 전체 중량에 대해 5~20wt%의 범위 내로 한정하는 것이 바람직하다.
When the amount of the loess is less than 5wt% or exceeds 20wt%, it is difficult to expect the improvement of the cohesiveness, so the amount of the loess is used in the range of 5 to 20wt% with respect to the total weight of the eco-friendly coagulant according to the present invention. It is preferable to limit.
이하, 본 발명에 따른 친환경 응집제의 구체적인 조성예를 살펴보면 다음의 실시예 2와 같다.
Hereinafter, looking at the specific composition example of the environmentally friendly flocculant according to the present invention is as follows.
본 발명에 따른 친환경 응집제의 구체적인 조성예는 실시예 1의 천연무기조성물 80㎏;와, 폐굴껍질 분말 5㎏;와, 키토산 10㎏;와, 황토 5㎏의 혼합으로 조성된다.
Specific composition of the environmentally friendly coagulant according to the present invention is 80 kg of the natural inorganic composition of Example 1, 5 kg of waste oyster shell powder; and 10 kg chitosan; and 5 kg of ocher.
이상에서 살펴본 바와 같이, 본 발명에 따른 친환경 응집제는 친환경적이면서 응집기능이 뛰어나기 때문에 토목·건축 분야의 폐수/식품관련 분야의 폐수/공업 분야의 폐수 등 다양한 폐수에 적용이 가능하여 상용성이 뛰어나다는 장점을 갖고 있어 산업상 이용가능성이 크다.As described above, since the eco-friendly coagulant according to the present invention is environmentally friendly and has excellent coagulation function, it can be applied to various waste water such as waste water in civil engineering and construction fields, waste water in food-related fields, and industrial waste water, and has excellent compatibility. Has the advantage that it is industrially applicable.
Claims (4)
폐굴껍질 분말(B) 5~20wt%;와,
키토산(C) 5~20wt%;와,
황토(D) 5~20wt%;를 혼합(A+B+C+D)하여 100wt%로 조성된 것임을 특징으로 하는 친환경 응집제.
10 to 20 wt% sodium oxide (Na 2 O), 20 to 50 wt% potassium oxide (K 2 O), 10 to 30 wt% aluminum oxide (Al 2 O 3 ), and 20 to 50 wt% silicon dioxide (SiO 2 ) And 70 to 85 wt% of the natural inorganic composition (A) composed of 100 wt% by mixing iron oxide (Fe 2 O 3 ) 1 to 10 wt%;
Waste oyster shell powder (B) 5 ~ 20wt%;
Chitosan (C) 5-20 wt%;
Ocher (D) 5 ~ 20wt%; Eco-friendly flocculant, characterized in that the composition was composed of 100wt% by mixing (A + B + C + D).
폐굴껍질은 수거된 폐굴껍질을 세척하여 염분 및 유기 이물질을 제거한 다음 24~40시간 동안 자연건조하고, 자연건조된 폐굴껍질을 볼밀(Ball Mill)로 분쇄한 후 200메쉬 체(sieve)로 선별하여 통과한 것을 드라이 오븐(dry oven)에서 105℃를 유지하면서 24시간 증발 건조한 다음 굴껍질이 흡습하지 않도록 데시케이터 속에 보관하면서 사용하는 것임을 특징으로 하는 친환경 응집제.
The method according to claim 1,
The waste oyster shell is washed with the collected waste oyster shell to remove salts and organic foreign matters, and then dried for 24 to 40 hours. The dried oyster shell is crushed with a ball mill and then screened with a 200 mesh sieve. Eco-friendly flocculant, characterized in that the evaporation is dried for 24 hours while maintaining the 105 ℃ in a dry oven and stored in a desiccator to prevent moisture absorption.
키토산은 게, 새우, 가재의 갑각류 껍질을 세척한 후 5wt%-HCl 용액에서 침적반응시켜 탄산칼슘을 제거하되, 상기 5wt%-HCl 용액 중에 CO2 gas가 생성되지 않을 때까지 반응시키는 과정과,
상기 탄산칼슘이 제거된 키틴물질을 10배 중량의 90wt% 농도의 포름산에 넣고 실온에서 15~20시간 동안 교반하는 과정과,
상기 교반과정을 거친 물질을 증류수로 세척하여 중성상태로 한 후 10wt%-NaOH용액에 넣고 2~3시간 동안 중탕한 후 세척, 건조과정을 거쳐 키틴을 제조하고,
상기 키틴을 50wt%(W/V)-NaOH 용액을 사용하여 100±5℃에서 1시간 ~ 2시간 동안 알칼리처리를 하여 탈아세틸화 처리하여 탈아세틸화도 80~94%, 점도평균분자량이 4.2×105 ~ 8.6×105인 것임을 특징으로 하는 친환경 응집제.
The method according to claim 1,
Chitosan is washed with shells of crab, shrimp and crayfish, and then immersed in 5wt% -HCl solution to remove calcium carbonate, but reacting until no CO 2 gas is generated in the 5wt% -HCl solution;
Putting the chitin material from which the calcium carbonate was removed into a formic acid at a concentration of 90 wt% of 10 times the weight and stirring at room temperature for 15 to 20 hours;
The material after the stirring process was washed with distilled water to a neutral state, put in 10wt% -NaOH solution, and then heated for 2 to 3 hours to prepare chitin by washing and drying.
The chitin was deacetylated by an alkali treatment at 100 ± 5 ° C. for 1 hour to 2 hours using a 50 wt% (W / V) -NaOH solution to obtain a deacetylation degree of 80 to 94% and a viscosity average molecular weight of 4.2 ×. Eco-friendly coagulant, characterized in that 10 5 ~ 8.6 × 10 5 .
황토는 500~950℃에서 1시간~1시간30분 동안 소성한 하소황토임을 특징으로 하는 친환경 응집제.
The method according to claim 1,
Ocher is an eco-friendly coagulant, characterized in that calcined ocher fired for 1 hour to 1 hour 30 minutes at 500 ~ 950 ℃.
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| CN105879844A (en) * | 2016-05-26 | 2016-08-24 | 青岛科技大学 | Method for preparing composite shellfish toxin adsorbent by coating porous shell particles with chitosan |
| KR20180068814A (en) * | 2016-12-14 | 2018-06-22 | 한국해양대학교 산학협력단 | Drainage treatment system for membrane filtration and Drainage treatment method using the same |
| KR101864178B1 (en) * | 2017-12-11 | 2018-07-13 | 한국건설기술연구원 | Phosphorus and nitrogen recovery system applied dual air flotation stages for crystal recovering apparatus and method to recover phosphorus and nitrogen using the same |
| CN108355624A (en) * | 2018-04-28 | 2018-08-03 | 广东国宇环保科技有限公司 | Based on dolomitic limestone-iron oxide-Nano chitosan composite material of steamed bun group Minerals And Rocks and its preparation and application |
| CN112645419A (en) * | 2020-12-01 | 2021-04-13 | 安徽鸿昌糖业科技有限公司 | Flocculating agent for purification of stevia rebaudiana |
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| JP2007301458A (en) | 2006-05-10 | 2007-11-22 | Tetsuji Ogawa | Treatment method of sludge, and fertilizer obtained by the same |
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| CN105879844A (en) * | 2016-05-26 | 2016-08-24 | 青岛科技大学 | Method for preparing composite shellfish toxin adsorbent by coating porous shell particles with chitosan |
| KR20180068814A (en) * | 2016-12-14 | 2018-06-22 | 한국해양대학교 산학협력단 | Drainage treatment system for membrane filtration and Drainage treatment method using the same |
| KR101909277B1 (en) * | 2016-12-14 | 2018-10-18 | 한국해양대학교 산학협력단 | Drainage treatment system for membrane filtration and Drainage treatment method using the same |
| KR101864178B1 (en) * | 2017-12-11 | 2018-07-13 | 한국건설기술연구원 | Phosphorus and nitrogen recovery system applied dual air flotation stages for crystal recovering apparatus and method to recover phosphorus and nitrogen using the same |
| WO2019117589A1 (en) * | 2017-12-11 | 2019-06-20 | 한국건설기술연구원 | System for recovering phosphorus and nitrogen into which dual air flotation type crystal-forming vessel and crystal-recovering apparatus capable of grain-size separation are introduced, and method for recovering phosphorus and nitrogen using same |
| CN111051249A (en) * | 2017-12-11 | 2020-04-21 | 韩国建设技术研究院 | Phosphorus and nitrogen recovery system introduced with crystal forming tank of two-stage air floating system and crystal recovery device capable of performing particle size separation, and phosphorus and nitrogen recovery method using same |
| CN111051249B (en) * | 2017-12-11 | 2022-03-29 | 韩国建设技术研究院 | Phosphorus and nitrogen recovery system, phosphorus and nitrogen recovery method using same, and method for determining optimum injection concentration of magnesium oxide |
| CN108355624A (en) * | 2018-04-28 | 2018-08-03 | 广东国宇环保科技有限公司 | Based on dolomitic limestone-iron oxide-Nano chitosan composite material of steamed bun group Minerals And Rocks and its preparation and application |
| CN112645419A (en) * | 2020-12-01 | 2021-04-13 | 安徽鸿昌糖业科技有限公司 | Flocculating agent for purification of stevia rebaudiana |
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