KR100307431B1 - Aggregate composition for chitosan water treatment - Google Patents
Aggregate composition for chitosan water treatment Download PDFInfo
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- KR100307431B1 KR100307431B1 KR1019980064159A KR19980064159A KR100307431B1 KR 100307431 B1 KR100307431 B1 KR 100307431B1 KR 1019980064159 A KR1019980064159 A KR 1019980064159A KR 19980064159 A KR19980064159 A KR 19980064159A KR 100307431 B1 KR100307431 B1 KR 100307431B1
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- 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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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Abstract
본 발명은 양이온성 및 음이온성의 응집특성을 나타내는 갑오징어의 뼈나 게에 존재하는 키틴을 이용한 키토산계 공중합체의 응집제 이용으로 수질오염의 피해를 줄일 수 있는 키토산계 수처리용 응집제 조성물에 관한 것으로 키토산계 공중합체와 포리염화알루미늄이 혼합되어 형성된다.The present invention relates to a chitosan-based water treatment flocculant composition which can reduce the damage of water pollution by using a coagulant of chitosan-based copolymers using chitin present in bone or crab of cuttlefish exhibiting cationic and anionic flocculation characteristics. It is formed by mixing a copolymer and aluminum polychloride.
[색인어][Index]
수처리, 응집제, 키토산, 무기계 알루미늄 응집제Water treatment, flocculant, chitosan, inorganic aluminum flocculant
Description
본 발명은 키토산계 수처리용 응집제 조성물에 관한 것으로, 더욱 상세하게 는 양이온성 및 음이온성으 응집특성을 나타내는 갑오징어의 뼈나 게에 존재하는 키틴을 이용하여 수질 오염의 피해를 줄일 수 있는 키토산계 수처리용 응집제 조성물에 관한 것이다.The present invention relates to a flocculant composition for chitosan-based water treatment, and more particularly, to chitosan-based water treatment, which can reduce the damage of water pollution by using chitin present in bones or crabs of cuttlefish exhibiting cohesive properties of cationic and anionic. It relates to a flocculant composition.
일반적으로, 산업의 발전 과정과 더불어 인구의 증가에 따라 공장 등에서 발생되는 각종 오폐수에 의한 수질오염은 수자원에 피해를 주는 것으로, 최근에는 생활용수나 산업용수로도 사용할 수 없을 만큼 오염 정도가 심각한 상태에 이르고 있다.In general, water pollution caused by various wastewaters generated from factories, etc., along with the development of the industry, causes damage to water resources. Recently, the pollution level is serious enough that it cannot be used as domestic or industrial water. have.
상기와 같은 오폐수의오염을 방지하기 위하여 최근에는 일반적인 방법으로 오폐수의 용액 중에 오염도어 있는 분산 입자의 처리방법으로 입자의 종류와 크기에 따라 처리방법을 달리하여 처리하여 오고 있다.In order to prevent the contamination of the waste water as described above, the treatment method of the dispersed particles in the contaminated solution of the waste water in the general method has been treated differently depending on the type and size of the particles.
이는 오폐수에 분산되어 있는 입자의 직경이 1㎛ 이상인 침전 가능한 부유물질은 침전에 의하여 쉽게 제거할 수 있으나, 1㎛ 이하의 콜로이드 물질은 여과나 침전에 의해서도 분리되지 않는 것으로 나타났다.This suggests that sedimentable suspended solids having a diameter of 1 µm or more dispersed in waste water can be easily removed by precipitation, but colloidal substances of 1 µm or less are not separated by filtration or precipitation.
특히, 소수성 콜로이드는 표면 하전을 띠고 있기 때문에 염 등을 첨가하여 표면 하전을 저하시켜 응집시키며, 친수성 콜로이드 입자는 수하층을 형성하여 안정한 상태로 유지되고 있기 때문에 이와 같은 입자들은 입자 접착력을 부여하여 응집시켜 처리된다.Particularly, since hydrophobic colloids have surface charges, they are aggregated by lowering the surface charges by adding salts and the like, and since the hydrophilic colloidal particles form a drooping layer and remain in a stable state, such particles impart particle adhesion and aggregate. Is processed.
상기와 같이 오폐수 등의 분산입자를 처리하기 위하여 현재 사용되어 오고 잇는 응집제 중에는 산업에 이용하기에는 사용 단가가 너무 높아 경제성이 없을 뿐만 아니라, 응집제로서의 응집효과도 매우 좋지 않다.Among the coagulants currently used to treat dispersed particles such as waste water as described above, the unit cost is too high for industrial use, so there is no economical efficiency, and the coagulant effect as a coagulant is also very poor.
최근에는, 이와 같은 응집제를 개발하고자 많은 연구가 진행되어 오고 잇으며, 보다 많은 연구에 이용되는 재료로 특별한 용도가 없이 폐기처리되는 키틴을 이용한 키토산계를 변형하여 사용 가능한 고분자 재료를 만드는 학술적 연구가 진행되어 어고 있다.Recently, many researches have been conducted to develop such a flocculant, and an academic research to make a polymer material that can be used by modifying a chitosan system using chitin that is disposed of without special use as a material used for more research has been conducted. It is going freezing.
그러나, 아직가지는 응집제에 관한 연구로서는 키토산 단독으로 응용하는 것 또는 그 공중합체에 대해 연구된 실정으로 수처리를 행하는 데는 그다지 만족스럽지 못한 실정이다. 대한민국 특허공고공보 제92-2358호는 키토산에 아크릴산 또는 아크릴아미드를 고래프트 공중합시켜 얻어지는 키토산계 공중합체 응집제에 대해 개시하고 있다. 그러나, 이 키토산계 공중합체 응집제는 무기계 알루미늄 응집제에 비하여 응집효과가 높지 않다.However, the research on the coagulant has not yet been satisfactory for the application of chitosan alone or for the treatment of water with the conditions studied for the copolymer thereof. Korean Patent Publication No. 92-2358 discloses a chitosan-based copolymer flocculant obtained by high-raft copolymerization of acrylic acid or acrylamide to chitosan. However, this chitosan type copolymer flocculant does not have a high flocculation effect compared with an inorganic aluminum flocculant.
따라서, 본 발명은 상기와 같이 종래의 문제점을 감안하여 창출된 것으로서 그 목적은 갑오징어의 뼈나 게에 존재하는 키틴의 성질인 분자사슬이 평행하게 배열된 특징을 이용하여 수질 오염의 피해를 줄일 수 있는 키노산계 수처리용 응집제 조성물을 제공함에 있다.Therefore, the present invention was created in view of the conventional problems as described above, and its purpose is to reduce the damage of water pollution by using a feature in which the molecular chains, which are the properties of chitin, present in bone or crab of cuttlefish are arranged in parallel. It is to provide a flocculant composition for chianoic acid-based water treatment.
상기와 같은 목적을 달성하기 위하여 본 발명의 키노산계 수처리용 응집제 조성물은 키토산계 공중합체와 황산알루미늄(황산반토, 폴리염화알루미늄(APC), 폴리수산화 염화규산알루미늄 등의 무기계 알루미늄 응집제를 혼합하여 제조한다.In order to achieve the above object, the coagulant composition for chinosan-based water treatment of the present invention is prepared by mixing a chitosan-based copolymer with an inorganic aluminum coagulant such as aluminum sulfate (aluminum sulfate, polyaluminum chloride (APC), polyaluminum hydroxide aluminum chloride). do.
즉, 본 발명은 키토산을 아크릴아미드와 그라프트 공중합체시킨 키토산 공중합체 분말 0.2-0.5중량부를 40-50℃의 물 97.8-94.5중량부에 분산시킨 후, 초산 2-5중량부를 투입하여 2500-3500rpm으로 고속정밀 교반한 후, 무기계 알루미늄 응집제(Al2O3가 8-12% 함유된 상태의 것)를 상기 교반된 키토산 공중합체 용액과 동일 중량비로 혼합하여 조성된 키토산계 수처리용 응집제 조성물을 제공한다.That is, in the present invention, 0.2-0.5 parts by weight of chitosan copolymer powder obtained by graft copolymerization of chitosan with acrylamide was dispersed in 97.8-94.5 parts by weight of water at 40-50 ° C, and then 2-5 parts by weight of acetic acid was added to 2500-. After high-speed precision stirring at 3500 rpm, an inorganic aluminum flocculant (with 8-12% of Al 2 O 3 ) was mixed with the stirred chitosan copolymer solution in the same weight ratio to form a flocculation composition for chitosan-based water treatment. to provide.
이하, 본 발명을 실시예에 의거하여 아래와 같이 상세하게 설명한다. 그러나, 본 발명의 범위가 아래 실시예에 한정되는 것은 아니다.EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail as follows based on an Example. However, the scope of the present invention is not limited to the following examples.
[실시예 1]Example 1
키토산계 공중합체와 폴리염화알루미늄이 혼합되어 조성된 키토산계 수처리용 응집제 조성물의 제조Preparation of chitosan-based water treatment flocculant composition in which chitosan-based copolymer and polyaluminum chloride are mixed
1. 키토산계 공중합체의 제조1. Preparation of Chitosan Copolymer
4구 플라스크에 N2가스 유입관, 온도계, 교반기, 냉각기를 장치하고 키토산4중량부와 아크릴아미드 단량체 0.2중량부, 15% 초산용액 22중량부를 플라스크에 넣고, 30℃의 물로 중탕하면서 N2가스를 통하면서 한시간동안 교반하여 팽윤(selling)시킨다.The four-necked flask was equipped with an N 2 gas inlet tube, a thermometer, a stirrer, and a cooler, and 4 parts by weight of chitosan, 0.2 parts by weight of acrylamide monomer, and 22 parts by weight of 15% acetic acid solution were placed in the flask, and N 2 gas was heated with 30 ° C. water. Stir by stirring for 1 hour while passing through.
상기 용액에 개시제인 세륨 암모늄 니트레이트를 0.3중량부 첨가하고, N2가스 하에 40℃에서 세시간동안 반응시킨다.0.3 parts by weight of cerium ammonium nitrate, an initiator, is added to the solution, and reacted for three hours at 40 ° C. under N 2 gas.
상기와 같이 세시간동안 반응된 반응용액에 물 160중량부를 첨가하고, 아세톤 500중량부를 과량 첨가한 후, 석출된 물질을 여과한 다음 40℃로 진공 건조하여 키토산계 공중합체 분말을 수득한다.160 parts by weight of water is added to the reaction solution reacted for 3 hours as described above, and 500 parts by weight of acetone is added in an excess. The precipitated material is filtered and then dried under vacuum at 40 ° C. to obtain a chitosan copolymer powder.
2. 폴리염화 알루미늄의 제조2. Preparation of Aluminum Polychloride
원료인 수산화알루미늄 4중량부와 염산 8중량부를 계량하여, 수산화알루미늄과 염산을 혼합하여 슬러리화한다.4 weight part of aluminum hydroxide which is a raw material, and 8 weight part of hydrochloric acid are measured, and aluminum hydroxide and hydrochloric acid are mixed and slurryed.
상기와 같이 혼합된 슬러리화된원료를 밀폐용기인 가압반응기 내에서 스팀을 가하여 반응시키고, 반응이 완료되면 반응물 중의 유리 염산을 제거하기 위해 탄산소다 0.4중량부를 가하여 중화시킨다.The slurryed raw material mixed as described above is reacted by adding steam in a pressurized reactor, which is a closed container, and neutralized by adding 0.4 parts by weight of sodium carbonate to remove free hydrochloric acid in the reaction product.
상기 중화가 완료되면 반응물 중 불순물 및 미반응물을 제거하기 위하여 필터프레스로 여과시킨다.Upon completion of the neutralization, the filter is filtered through a filter press to remove impurities and unreacted reactants.
여과된 반응물에 황산소다 1.6중량부를 가하여 안정화시킨 후 물 50중량부로 제품의 농도를 조절한 후 농도조절이끝난 폴리염화알루미늄이 제조된다. 얻어진 폴리염화 알루미늄은 산화알루미늄 기준 10~12%가 함유된다.After stabilizing by adding 1.6 parts by weight of sodium sulfate to the filtered reaction product, after adjusting the concentration of the product to 50 parts by weight of water, the poly aluminum chloride is finished. The obtained polyaluminum chloride contains 10 to 12% of the aluminum oxide standard.
상기와 같이 제조된 키노산을아크릴아미드와 그라프트 공중합체시킨 공중합체분말 0.3중량부를 40-50℃의 물 97.8중량부에 부산시킨 후, 초산 3중량부를 투입하여 2500-3500rpm으로 고속정밀 교반한 후, 폴리염화알루미늄(Al2O3가 10-12% 함유된 상태의 것)을 상기 교반된 키토산 공중합체 용액과 동일 중량비로 혼합하여 키토산계 수처리용 응집제 조성물을 제조한다.0.3 parts by weight of the copolymer powder obtained by graft copolymerization of acrylamide as described above was added to 97.8 parts by weight of water at 40-50 ° C., and then 3 parts by weight of acetic acid was added thereto, followed by high-speed precision stirring at 2500-3500 rpm. Thereafter, polyaluminum chloride (which contains 10-12% of Al 2 O 3 ) is mixed with the stirred chitosan copolymer solution in the same weight ratio to prepare a coagulant composition for chitosan-based water treatment.
[실시예 2]Example 2
실시예 1과 같은 방법으로 키토산계 공중합체 및 폴리염화 알루미늄을 제조한다.A chitosan-based copolymer and polyaluminum chloride were prepared in the same manner as in Example 1.
상기와 같이 제조된 키토산을 아크릴아미드와 그라프트 공중합체시킨 공중합체분말 0.3중량%를 40-50℃의 물 97.8중량%에 분산시킨 후, 초산 3중량%를 투입하여 2500-3500rpm으로 고속정밀 교반한 후, 폴리염화알루미늄(Al2O3가 10-12% 함유된 상태의 것)을 상기 교반된 키토산 공중합체 용액과 중량비 1(키토산계 공중합체 용액):2(폴리염화알루미늄) 비율로 혼하바형 키노산계 수처리용 응집제 조성물으 ㄹ제조한다.0.3 wt% of the copolymer powder obtained by graft copolymerization of aceticamide and graft copolymer prepared as described above was dispersed in 97.8 wt% of water at 40-50 ° C., and then 3 wt% of acetic acid was added thereto, followed by high-speed stirring at 2500-3500 rpm. After that, polyaluminum chloride (containing 10-12% of Al 2 O 3 ) was mixed with the stirred chitosan copolymer solution at a weight ratio of 1 (chitosan copolymer solution): 2 (polyaluminum chloride). Prepare a flocculant composition for haba type chino acid-based water treatment.
[실시예 3]Example 3
실시예 1과 같은 방법으로 키토산계 공중합체 및 폴리염화 알루미늄을 제조한다.A chitosan-based copolymer and polyaluminum chloride were prepared in the same manner as in Example 1.
상기와 같이 제조된 키토산을 아크릴아미드와 그라프트 공중합체시킨 공중합체분말 0.3중량%를 40-50℃의 물 97.8중량%에 분산시킨 후, 초산 3중량%를 투입하여 2500-3500rpm으로 고속정밀 교반한 후, 폴리염화알루미늄(Al2O3가 10-12% 함유된 상태의 것)을 상기 교반된 키토산 공중합체 용액과 중량비 2(키토산계 공중합체 용액):1(폴리염화 알루미늄) 비율로 혼합하여 키토산계 수처리용 응집제 조성물을 제조한다.0.3 wt% of the copolymer powder obtained by graft copolymerization of aceticamide and graft copolymer prepared as described above was dispersed in 97.8 wt% of water at 40-50 ° C., and then 3 wt% of acetic acid was added thereto, followed by high-speed stirring at 2500-3500 rpm. After that, polyaluminum chloride (containing 10-12% of Al 2 O 3 ) was mixed with the stirred chitosan copolymer solution at a weight ratio of 2 (chitosan copolymer solution): 1 (polyaluminum chloride). To prepare a flocculant composition for chitosan-based water treatment.
상기와 같이 실시예 1~3에서 얻어진 조성물에 대하여 아래와 같이 실험하였다.As described above, the compositions obtained in Examples 1 to 3 were tested as follows.
[실험예 1]Experimental Example 1
실시예 1에 의하여By Example 1
비중(20℃): 1.10 이상Specific gravity (20 ℃): 1.10 or more
pH : 3.8-5.0pH: 3.8-5.0
Al2O3: 5% 이상인 키토산계 폴리염화 알루미늄을 얻었다.Al 2 O 3 : A chitosan-based polyaluminum chloride having 5% or more was obtained.
키노산계 공중합체와 폴리염화 알루미늄 1:1 비율로 혼합한 경우의 키ㅗㅌ산계 폴리염화 알루미늄은 안정성이 매우 높아 장시간 보관시에도 변질되지 않았으며, 정수장의 원수처리 시험결과 폴리염화 알루미늄(P.A.C))보다 청정도 및 잔류 알루미늄에 있어서, 하기 표 1과 같이 월등하게 우수한 결과를 나타내었다.The chioxane-based polychlorinated aluminum when mixed with the chianoic acid-based copolymer at 1: 1 ratio of polyaluminum chloride is very stable and does not deteriorate even when stored for a long time. In terms of cleanliness and residual aluminum than), as shown in Table 1, the results were much better.
[실험예 2]Experimental Example 2
실시예 2에 의해 키토산계 공중합체와 폴리염화 알루미늄을 1:2의 비율로 혼합한 경우에 키토산계 폴리염화 알루미늄은 안정성이 매우 떨어질 뿐만 아니라, 장시간 보관시에는 변질이 다소 심하게 나타났으며, 정수장의 원수처리 시험결과 폴리염화 알루미늄보다 청정도 및 잔류 알루미늄에 있어서 매우 좋지 않은 결과를 나타내었다.When the chitosan-based copolymer and polyaluminum chloride were mixed at a ratio of 1: 2 according to Example 2, the chitosan-based polychloride was not only very poor in stability, but also deteriorated slightly during long-term storage. The raw water treatment test of showed very poor results in cleanliness and residual aluminum than polyaluminum chloride.
[실험예 3]Experimental Example 3
실시예 3에 의해 키토산계 공중합체와 폴리염화 알루미늄을 2:1의 비율로 혼합한 경우에 키토산계 폴리염화 알루미늄은 안정성이 매우 떨어질 뿐만 아니라, 장시간 보관시에는 변질이 다소 심하게 나타났으며, 정수장의 원수처리 시험결과 폴리염화 알루미늄보다 청정도 및 잔류 알루미늄에 있어서 매우 좋지 않은 결과를 나타내었다.When the chitosan-based copolymer and polyaluminum chloride were mixed at a ratio of 2: 1 by Example 3, the chitosan-based polychloride was not only very poor in stability, but also deteriorated slightly during long-term storage. The raw water treatment test of showed very poor results in cleanliness and residual aluminum than polyaluminum chloride.
상기 표 1과 같은 결과는 시험조건을 120rpm으로 2분간 급속 교반하고, 50-60rpm으로 10분간 완속교반한 다음 10분간 침강시킨 후, 상충액에 실험약품을 처리하여 상층수 100㎖을 취하여 시험한 것이다.The results as shown in Table 1 were rapidly stirred at 120 rpm for 2 minutes, slow stirring at 50-60 rpm for 10 minutes, and then allowed to settle for 10 minutes. will be.
실험 결과를 살펴 보면, 종래 폴리염화 알루미늄(PAC)은 처리수의 청정도가 1.5ppm이고 처리수의 잔류 알루미늄이 0.25ppm으로 나타났으며, 폴리수산화염화규산 알루미늄(PACS)은 처리수의 청정도가 1.3ppm이고, 처리수의 잔류 알루미늄을 살펴 보면, 폴리염화알루미늄보다 많은 0.28ppm으로 나타났다.As a result of the experiment, the conventional polyaluminum chloride (PAC) showed 1.5 ppm of clean water and the residual aluminum of treated water was 0.25 ppm, and the polyaluminum hydrochloride silicate (PACS) had 1.3 clean water. ppm, and the residual aluminum in the treated water was 0.28 ppm more than polyaluminum chloride.
또한, 무기계 알루미늄 응집제 계열과 혼합하지 않은 키토산계 공중합체 응집제를 단독으로 처리한 경우에는 처리수의 청정도가 3.5ppm, 잔류 알루미늄이 0.5ppm으로 나타났다.In addition, when the chitosan-based copolymer flocculant not mixed with the inorganic aluminum flocculant series alone was treated, the cleanliness of the treated water was 3.5 ppm and the residual aluminum was 0.5 ppm.
따라서, 위와 같은 시험결과는 본 발명의 실시예 1과 같은 조성비율로 키노산계 공중합체와 무기계 알루미늄 응집제를 1:1중량비로 혼합하는 경우 처리수의 청정도 및 잔류 알루미늄 측정치가 가장 낮게 나타나 가장 효과적으로 응집 및 수처리를 수행할 수 있음을 알 수 있다.Therefore, the above test results are most effective when the chinosan-based copolymer and the inorganic aluminum coagulant are mixed in a 1: 1 weight ratio in the same composition ratio as in Example 1, resulting in the lowest cleanliness and residual aluminum measurement of the treated water. It can be seen that coagulation and water treatment can be performed.
반면, 실시예 2, 3과 같이 키토산계 공중합체와 무기계 알루미늄 응집제를 1:2 중량비 또는 2:1 중량비로 혼합하는 경우 처리수의 청정도 및 처리수의 알루미늄 농도가 놓게 나타나 좋지 않은 결과를 보여 준다.On the other hand, when the chitosan-based copolymer and the inorganic aluminum flocculant are mixed in a 1: 2 weight ratio or a 2: 1 weight ratio as in Examples 2 and 3, the cleanliness of the treated water and the aluminum concentration of the treated water are poor. give.
상기 실험예 1에 나타난 바와 같이 본 발명의 키노산계 폴리염화 알루미늄은 처리수의 청정도가 1.0ppm으로 낮게 나타났으며, 처리수의 잔류 알루미늄 또한 0.15ppm으로 상기 표 1의 여섯가지 응집제 조성물 중 가장 월등한 효과를 나타내었다.As shown in Experiment 1, the chinosan-based polyaluminum chloride of the present invention showed low cleanliness of 1.0 ppm of treated water, and the residual aluminum of the treated water was also 0.15 ppm, which is the highest among the six coagulant compositions of Table 1 above. One effect was shown.
본 발명의 또다른 실시예를 아래에 나타낸다.Another embodiment of the present invention is shown below.
[실시예 4]Example 4
키토산계 공중합체와 황산알루미늄(Al2O3로서 8-12%)을 혼합하여 조성된 키토산계 수처리용 응집제 조성물의 제조Preparation of chitosan-based water treatment flocculant composition prepared by mixing chitosan-based copolymer and aluminum sulfate (8-12% as Al 2 O 3 )
1. 키토산계 공중합체의 제조1. Preparation of Chitosan Copolymer
키토산 4중량부와 아크릴아미드 단량체 0.2중량부, 초산22중량부를 플라스크에 넣고 30℃에서 한시간동안 역류시키면서 팽창시키고, 이때 N2가스를 반응기에 통과시킨다.4 parts by weight of chitosan, 0.2 parts by weight of acrylamide monomer, and 22 parts by weight of acetic acid are placed in a flask and expanded while refluxing at 30 ° C. for one hour while passing N 2 gas through the reactor.
상기 용액에 반응 개시제인 세륨 암모늄 니트레이트를 0.3중량부 첨가하고 N2가스 하에 40℃에서 세시간동안 반응시킨다.0.3 parts by weight of cerium ammonium nitrate, a reaction initiator, is added to the solution and reacted for three hours at 40 ° C under N 2 gas.
상기와 같이 세시간동안 반응된 반응용개에 물 160중량부를 첨가하고, 아세톤을 500중량부 첨가한 후 석출된 물질을 여과한 다음 40℃로 진공 건조하여 키토산계 공중합체 분말을 수득한다.160 parts by weight of water was added to the reaction vessel reacted for 3 hours as described above, 500 parts by weight of acetone was added, and the precipitated material was filtered and then vacuum dried at 40 ° C. to obtain a chitosan copolymer powder.
2. 액체 황산 알루미늄의 제조2. Preparation of Liquid Aluminum Sulfate
원료인 수산화알루미늄과 황산을 게량하여 수산화아루미늄 4중량부와 황산 6.8중량부, 물 40중량부를 반응기에 투입하여 반응시킨 후, 반응이 완료된 반응물을 반응기에서 배출한 다음 물을 가하여 농도를 조절한다.After adding aluminum hydroxide and sulfuric acid as raw materials, 4 parts by weight of aluminum hydroxide, 6.8 parts by weight of sulfuric acid, and 40 parts by weight of water are added to the reactor for reaction, and then the reaction product is discharged from the reactor and water is added to adjust the concentration. .
상기 농도 조절이 완료된 용액에서 불순물 및 미반응물을 제거하기 위하여 필터 프레스로 여과시켜 액체 황산 알루미늄을 제조한다. 얻어진 액체 황산 알루미늄은 산화알루미늄 기준 8~12%가 함유된다.Liquid aluminum sulfate is prepared by filtration with a filter press to remove impurities and unreacted substances from the solution having completed concentration adjustment. The obtained liquid aluminum sulfate contains 8 to 12% based on aluminum oxide.
상기와 같이 제조된 키노산을 아크릴아미드와 그라프트 공중합체시킨 공중합체분말 0.3중량부를 40-50℃의 물 97.8중량부에 분산시킨 후, 초산 3중량부를 투입하여 2500-3500rpm으로 고속정밀 교반한 후, 액체 황산 알루미늄(Al2O3가 8-12% 함유된 상태의 것)을 상기 교반된 키토산 공중합체 용액과 동일 중량비로 혼합하여 키토산계 수처리용 응집제 조성물을 제조한다.After dispersing 0.3 parts by weight of the copolymer powder prepared as described above with acrylamide and graft copolymer into 97.8 parts by weight of water at 40-50 ° C., 3 parts by weight of acetic acid was added thereto, followed by high-speed precision stirring at 2500-3500 rpm. Thereafter, liquid aluminum sulfate (which contains 8-12% of Al 2 O 3 ) is mixed with the stirred chitosan copolymer solution in the same weight ratio to prepare a coagulant composition for chitosan-based water treatment.
[실시예 5]Example 5
실시예 4와 같은 방법으로 키토산계 공중합체 및 액체 황산 알루미늄을 제조한다.A chitosan-based copolymer and liquid aluminum sulfate were prepared in the same manner as in Example 4.
상기와 같이 제조된 키토산을 아크릴아미드와 그라프트 공중합체시킨 공중합체분말 0.3중량부를 40-50℃의 물 97.8중량부에 분산시킨 후, 초산 3중량부를 투입하여 2500-3500rpm으로 고속정밀 교반한 후, 액체 황산 알루미늄(Al2O3가 8-12% 함유된 상태의 것)을 상기 교반된 키토산 공중합체 용액과 1(키토산 공중합체):2(액체 황산 알루미늄) 중량비로 혼합하여 키토산계 수처리용 응집제 조성물을 제조한다.After dispersing 0.3 parts by weight of chitosan prepared as described above, acrylamide and graft copolymer copolymers into 97.8 parts by weight of water at 40-50 ° C., 3 parts by weight of acetic acid was added thereto, followed by high-speed precision stirring at 2500-3500 rpm. , Liquid aluminum sulfate (in the state containing 8-12% of Al 2 O 3 ) by mixing the stirred chitosan copolymer solution and 1 (chitosan copolymer): 2 (liquid aluminum sulfate) weight ratio for chitosan-based water treatment Prepare flocculant composition.
[실시예 6]Example 6
실시예 4와 같은 방법으로 키토산계 공중합체 및 액체 황산 알루미늄을 제조한다.A chitosan-based copolymer and liquid aluminum sulfate were prepared in the same manner as in Example 4.
상기와 같이 제조된 키토산을 아크릴아미드와 그라프트 공중합체시킨 공중합체분말 0.3중량부를 40-50℃의 물 97.8중량부에 분산시킨 후, 초산 3중량부를 투입하여 2500-3500rpm으로 고속정밀 교반한 후, 액체 황산 알루미늄(Al2O3가 8-12% 함유된 상태의 것)을 상기 교반된 키토산 공중합체 용액과 2(키토산 공중합체):1(액체 황산 알루미늄) 중량비로 혼합하여 키토산계 수처리용 응집제 조성물을 제조한다.After dispersing 0.3 parts by weight of chitosan prepared as described above, acrylamide and graft copolymer copolymers into 97.8 parts by weight of water at 40-50 ° C., 3 parts by weight of acetic acid was added thereto, followed by high-speed precision stirring at 2500-3500 rpm. , Liquid aluminum sulfate (in the state containing 8-12% of Al 2 O 3 ) by mixing the stirred chitosan copolymer solution and 2 (chitosan copolymer): 1 (liquid aluminum sulfate) by weight ratio for chitosan-based water treatment Prepare flocculant composition.
[실험예 4]Experimental Example 4
실시예 4에 의해By Example 4
비중(20℃): 1.15 이상Specific gravity (20 ℃): 1.15 or more
pH: 3 이상pH: 3 or more
Al2O3: 4% 이하인 키토산계 액체 황산 알루미늄을 얻었다.Al 2 O 3 : A chitosan-based liquid aluminum sulfate having 4% or less was obtained.
키토산계 공중합체와 액체 황산알루미늄을 1:1 비율로 혼합한 경우의 키토산계 액체 황산알루미늄은 안정성이 매우 높아 장시간 보관시에도 변질되지 않앗으며, 정수장의 원수처리 시험결과 액체 황산알루미늄(LAS)보다 처리수의 청정도 및 잔류 알루미늄에 있어서, 하기 표 2에서와 같이 월등하게 우수함을 알 수 있다.When the chitosan copolymer and liquid aluminum sulfate are mixed in a 1: 1 ratio, the chitosan-based liquid aluminum sulfate is highly stable and does not deteriorate even when stored for a long time. In the cleanliness of the treated water and the residual aluminum, it can be seen that excellent as shown in Table 2.
[실험예 5]Experimental Example 5
실시예 5에 의해 키토산계 공중합체와 액체 황산 알루미늄을 1:2의 비율로 혼합한 경우에 키토산계 액체 황산 알루미늄은 안정성이 매우 떨어질 뿐만 아니라, 장시간 보관시에는 변질이 다소 심하게 나타났으며, 정수장의 원수처리 시험결과 액체 황산 알루미늄보다 청정도 및 잔류 알루미늄에 있어서 좋지 않은 결과를 나타내었다.When the chitosan-based copolymer and the liquid aluminum sulfate were mixed in the ratio of 1: 2 according to Example 5, the chitosan-based liquid aluminum sulfate not only had a very low stability but also had a deterioration slightly during long-term storage. The raw water treatment test of showed better results in cleanliness and residual aluminum than liquid aluminum sulfate.
[실험예 6]Experimental Example 6
실시예 6에 의해 키토산계 공중합체와 액체 황산 알루미늄을 2:1의 비율로 혼합한 경우에 키토산계 액체 황산 알루미늄은 안정성이 매우 떨어질 뿐만 아니라, 장시간 보관시에는 변질이 다소 심하게 나타났으며, 정수장의 원수처리 시험결과 액체 황산 알루미늄보다 청정도 및 잔류 알루미늄에 있어서 매우 좋지 않은 결과를 나타내었다.When the chitosan-based copolymer and the liquid aluminum sulfate were mixed in a ratio of 2: 1 according to Example 6, the chitosan-based liquid aluminum sulfate was not only very poor in stability, but also deteriorated slightly during long-term storage. The raw water treatment test of showed very poor results in cleanliness and residual aluminum than liquid aluminum sulfate.
상기 표 2와 같은 결과는 시험조건을 120rpm으로 2분간 급속 교반하고, 50-60rpm으로 10분간 완속교반한 다음 10분간 침강시킨 후, 상층액에 실험약품 즉 응집제를 처리하여 상층수 100㎖을 취하여 시험한 것이다.The results as shown in Table 2 were rapidly stirred at 120 rpm for 2 minutes, slow stirring at 50-60 rpm for 10 minutes, and then allowed to settle for 10 minutes. It is a test.
실험 결과를 살펴 보면, 종래 액체 황산 알루미늄은 처리수의 청정도가 2.4ppm이고 처리수의 잔류 알루미늄은 0.27ppm으로 나타난 반면, 본 발명의 키토산계 액체 황산 알루미늄으로 처리한 처리수의 청정도는 1.5ppm으로 낮게 나타났으며, 처리수의 잔류 알루미늄 또한 0.18ppm으로 기존의 액체 황산 알루미늄 응집제 보다 본 발명의 키토산계 액체 황산 알루미늄의 응집효과가 월등히 우수함을 알 수 있다.The experimental results show that the conventional liquid aluminum sulfate has 2.4 ppm of clean water of treated water and 0.27 ppm of residual aluminum of treated water, whereas the cleanness of treated water treated with the liquid chitosan liquid aluminum sulfate of the present invention is 1.5 ppm. The residual aluminum of the treated water was also 0.18 ppm, which indicates that the chitosan-based liquid aluminum sulfate coagulation effect of the present invention is much better than that of the conventional liquid aluminum sulfate coagulant.
반면, 실험예 5,6은 처리수의 청정도, 잔류 알루미늄이 높게 나타나 응집, 처리효과가 좋지 않음을 알 수 있다.On the other hand, in Experimental Examples 5 and 6, the cleanliness of the treated water and the residual aluminum were high, indicating that the flocculation and treatment effects were not good.
따라서, 본 발명의 키토산계 수처리용 응집제 조성물으 ㄴ키토산 공중합체 단독으로 사용하는 것이나 종래 무기계 알루미늄 응집제에 비해 응집효과가 월등함을 알 수 있으며, 갑오징어의 뼈나 게 등에 존재하고 있는 키틴을 이용하여 키토산을 제조할 수 있어 폐자원 활용이라는 의미가 있다.Therefore, it can be seen that the chitosan-based water treatment flocculant composition of the present invention is superior to the use of the chitosan copolymer alone or the flocculation effect is superior to that of the conventional inorganic aluminum flocculant, and that chitin is present in bones and crabs of cuttlefish. Chitosan can be produced, which means the use of waste resources.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101169563B1 (en) | 2012-02-13 | 2012-07-27 | 박영구 | An inorganic coagulant comprising waste plaster, starfish powder, shell powder and clay mineral |
| CN105236499A (en) * | 2015-10-13 | 2016-01-13 | 桂林市春晓环保科技有限公司 | Domestic sewage purification agent |
| KR102025047B1 (en) * | 2019-05-23 | 2019-09-24 | 황준하 | Functional Air Cleaner Using Water Curtain Filter |
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| KR100456506B1 (en) * | 2002-01-16 | 2004-11-09 | 주식회사 자광 | Manufacturing method of Water soluble chitosan blendmer for heavy metal binding agent and itself produced using the same |
| KR101025780B1 (en) * | 2008-12-01 | 2011-04-04 | 한밭대학교 산학협력단 | The Coagulation composition which contains chitosan and sulfate compounds for water treatment and a method of preparing thereof |
| WO2014045409A1 (en) * | 2012-09-21 | 2014-03-27 | 三菱電機株式会社 | Analog feedback amplifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101169563B1 (en) | 2012-02-13 | 2012-07-27 | 박영구 | An inorganic coagulant comprising waste plaster, starfish powder, shell powder and clay mineral |
| CN105236499A (en) * | 2015-10-13 | 2016-01-13 | 桂林市春晓环保科技有限公司 | Domestic sewage purification agent |
| KR102025047B1 (en) * | 2019-05-23 | 2019-09-24 | 황준하 | Functional Air Cleaner Using Water Curtain Filter |
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