KR930012593A - How to use chitosan as heavy metal adsorbent and wastewater flocculant - Google Patents

How to use chitosan as heavy metal adsorbent and wastewater flocculant Download PDF

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Publication number
KR930012593A
KR930012593A KR1019910022644A KR910022644A KR930012593A KR 930012593 A KR930012593 A KR 930012593A KR 1019910022644 A KR1019910022644 A KR 1019910022644A KR 910022644 A KR910022644 A KR 910022644A KR 930012593 A KR930012593 A KR 930012593A
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South Korea
Prior art keywords
wastewater
chitosan
leather
plating
heavy metal
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KR1019910022644A
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Korean (ko)
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김용범
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김용범
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Priority to KR1019910022644A priority Critical patent/KR930012593A/en
Publication of KR930012593A publication Critical patent/KR930012593A/en

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Abstract

본 발명은 게나 새우껍질등에서 추출된 키틴으로부터 탈아세틸화하여 만들어진 키토산을 응집제 용액으로 조제하여 도금폐수내의 중금속흡착이나 식품폐수, 축산폐수, 피혁폐수내의 부유물들을 응집시켜 제거함으로써 폐수 처리제로 사용하는 방법에 관한 것으로, 그 폐수 정제효과가 탁월한 외에 키토산자체가 2차 공해가 없는 무독, 무해의 천연고분자이기 때문에 슬럿지중 유효자원 회수와 재활용이 가능할 뿐만 아니라 탈수 효율이 높아 슬럿지 처리에 경제적인 이점이 크다.In the present invention, chitosan prepared by deacetylation from chitin extracted from crab or shrimp shell is prepared as a coagulant solution, and the heavy metal adsorption in plated wastewater or flocculation and removal of suspended solids in food wastewater, livestock wastewater, and leather wastewater is used as a wastewater treatment agent. In addition, the wastewater refining effect is excellent, and chitosan itself is a non-toxic and harmless natural polymer without secondary pollution, so it is not only possible to recover and recycle active resources in the sludge, but also has high economical efficiency in sludge treatment due to its high dehydration efficiency. .

Description

키토산을 중금속 흡착제와 폐수 응집제로 사용하는 방법How to use chitosan as heavy metal adsorbent and wastewater flocculant

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제10도는 키토산 주입농도 110ppm에서 변화에 따른 피혁폐수의 투과율 변화도.10 is a change in the permeability of leather wastewater according to the change in the chitosan injection concentration of 110ppm.

제11도는 PH6.7에서 키토산 주입농도별 피혁폐수의COD제거율 변화도.11 is a change in the COD removal rate of leather wastewater by chitosan injection concentration at PH6.7.

제12도는 PH6.7에서 키토산 주입농도별 피혁폐수의 SS제거율 변화도.12 is a change in SS removal rate of leather wastewater by chitosan injection concentration at PH6.7.

제13도는 피혁폐수에서 키토산과 폴리아크릴아마이드 중금속 제거율 비교도.Figure 13 is a comparison of chitosan and polyacrylamide heavy metal removal rate in leather wastewater.

Claims (5)

교반 장치가 가설된 도금, 식품, 축산, 피혁 폐수 처리조에 흡착 또는 응집을 위한 최적 PH를 조절한 후 40%이상 탈아세틸화 된 키토산을 초산, 기타 유기산, 무기산 수용액에 용해한 키토산 0.001-1000ppm을 주입하고 0.1-2시간 교반, 0,1-5시간 정치함에 의하여 폐수내의 중금속을 흡착제거함을 특징으로 하는 폐수내 중금속 제거방법.After adjusting the optimum pH for adsorption or flocculation in the plating, food, livestock, and leather wastewater treatment tanks with a stirring device, inject 0.001-1000ppm of chitosan dissolved in an aqueous solution of acetic acid, other organic acids, and inorganic acids by deacetylating chitosan more than 40%. And adsorbing and removing heavy metals in the wastewater by stirring for 0.1-2 hours and standing for 0,1-5 hours. 제1항에 있어서, 폐수는 도금폐수나 피혁폐수 중에서 선택함을 특징으로 하는 폐수내 제거방법.The method of claim 1, wherein the wastewater is selected from plating wastewater or leather wastewater. 교반장치가 가설된 도금, 식품, 축산, 피혁 폐수 처리조에 흡착 또는 응집을 위한 최적 PH를 조절한 후 50%이상 탈아세틸화 된 키토산을 초산, 기타 유기산, 무기산 수용액에 용해한 키토산 0.0001-1000ppm을 주입하고 0.1-2시간 교반, 0.1-5시간 정치함에 의하여 폐수내의 중금속을 흡착제거함을 특징으로 하는 폐수내 부유물 제거방법.After adjusting the optimum pH for adsorption or flocculation in plating, food, livestock, and leather wastewater treatment tanks with a stirring device, inject 0.0001-1000ppm of chitosan dissolved 50% or more of deacetylated chitosan in acetic acid, other organic acid, and inorganic acid aqueous solution. And adsorbing and removing heavy metals in the wastewater by stirring for 0.1-2 hours and standing for 0.1-5 hours. 제3항에 있어서, 폐수는 도금폐수나 피혁폐수 중에서 선택됨을 특징으로 하는 폐수내 부유물 제거방법The method of claim 3, wherein the wastewater is selected from plating wastewater or leather wastewater. 제2항 또는 제4항에 있어서, 최적PH범위는 도금폐수는 PH6이상, 식품폐수는 PH6이하, 축산폐수는 PH3이나 6, 피혁폐수 PH6.5-7.0범위 임을 특징으로 하는 폐수내 오염물질 제거방법The method according to claim 2 or 4, wherein the optimum PH ranges from plating wastewater to PH6 or more, food waste to PH6 or less, livestock waste to PH3 or 6, and leather wastewater to PH6.5-7.0. Way ※ 참고 사항; 최초출원 내용에 의하여 공개하는 것임.※ Note; Disclosure based on original application.
KR1019910022644A 1991-12-11 1991-12-11 How to use chitosan as heavy metal adsorbent and wastewater flocculant KR930012593A (en)

Priority Applications (1)

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KR1019910022644A KR930012593A (en) 1991-12-11 1991-12-11 How to use chitosan as heavy metal adsorbent and wastewater flocculant

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KR1019910022644A KR930012593A (en) 1991-12-11 1991-12-11 How to use chitosan as heavy metal adsorbent and wastewater flocculant

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KR930012593A true KR930012593A (en) 1993-07-20

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100470610B1 (en) * 2002-02-28 2005-02-21 경상대학교산학협력단 A method for production of Chitosan from Fungal
KR100546484B1 (en) * 1999-01-28 2006-01-26 주식회사 효성 The Manufacturing Method for a High Molecular Coagulant of Chitosan Group
WO2023054826A1 (en) * 2021-09-30 2023-04-06 나재운 Coal-dust water flocculant using quinoasic acid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100546484B1 (en) * 1999-01-28 2006-01-26 주식회사 효성 The Manufacturing Method for a High Molecular Coagulant of Chitosan Group
KR100470610B1 (en) * 2002-02-28 2005-02-21 경상대학교산학협력단 A method for production of Chitosan from Fungal
WO2023054826A1 (en) * 2021-09-30 2023-04-06 나재운 Coal-dust water flocculant using quinoasic acid

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